TopVent Design Handbook - PDF Free Download

TopVent Design Handbook Recirculation Units and Supply Air Units for Heating and Cooling High Spaces

TopVent Content TopVent DHV Recirculation unit for heating high spaces TopVent NHV Recirculation unit for heating high spaces with lower comfort requirements (e.g. high-bay warehouses) 13 TopVent DKV Recirculation unit for heating and cooling high spaces in the 2-pipe system 23 TopVent DHKV Recirculation unit for heating and cooling high spaces in the 4-pipe system 33 3 A B C D TopVent commercial CUM Roof unit for heating and cooling supermarkets TopVent MH Supply air unit for ventilating and heating high spaces TopVent MK Supply air unit for ventilating, heating and cooling high spaces TopVent commercial CAU Roof unit for ventilating, heating and cooling supermarkets TopVent HV Recirculation unit for heating spaces up to 6 m in height TopVent curtain Air curtain Options 43 53 63 75 87 95 E F G H I J K Transport and installation 103 L Control systems 115 M System design 123 N 137

TopVent DHV Content TopVent DHV Recirculation unit for heating high spaces A 1 Use 4 2 Construction and operation 4 3 Technical data 7 4 Specification texts 10 3

TopVent DHV Use 1 Use 2 Construction and operation 1.1 Intended use TopVent DHV units are recirculation units intended for heating high spaces. They have the following functions: Heating (with connection to a hot water supply) Recirculation operation Air distribution with adjustable Air-Injector Air filtration (optional) Also included under intended use are compliance with the installation, commissioning, operating and maintenance provisions (operating instructions). Any use beyond this is considered improper use. The manufacturer can accept no liability for damage resulting from improper use. 1.2 User group The units are only allowed to be installed, operated and maintained by authorised and instructed personnel who are well acquainted with the units and are informed about possible dangers. The operating instructions are for operating engineers and technicians as well as specialists in building, heating and ventilation technology. The TopVent DHV is used to heat in recirculation operation; it was developed specially for use in high halls. The unit is installed under the ceiling. It takes in room air, heats it in the heating coil and blows it back into the room through the Air-Injector. With its high performance and efficient air distribution, the TopVent DHV covers a large area. Therefore, compared to other systems, fewer units are needed to achieve the required conditions. 2 unit sizes, variable fans, different coil types and a whole string of accessories provide a tailored solution for any hall. 2.1 Unit construction The TopVent DHV consists of the following components: Heating section (with fan and heating coil) Automatically adjustable vortex air distributor Air-Injector Both components are bolted together, but can be dismantled separately again. 2.2 Air distribution with the Air-Injector The patented air distributor called the Air-Injector is the core element. The air discharge angle is set by means of the infinitely variable guide vanes. It depends on the air flow rate, the mounting height and the temperature difference between the supply air and room air. The air is therefore blown into the room vertically downward, conically or horizontally. This ensures that: with each TopVent unit, a large area of the hall can be reached, the occupied area is draught-free, the temperature stratification in the room is reduced, thus saving energy. 4

TopVent DHV Use Housing: Made of corrosion-resistant aluzinc sheet metal Fan: Quiet axial fan with high-efficiency EC motor Unit control box as part of the TopTronic C control system Heat exchanger: Heating coil consisting of copper tubes with aluminium fins Air-Injector: Patented, automatically adjustable vortex air distributor for draught-free air distribution over a large area (incl. actuator) A Fig. A1: TopVent DHV structure Heating section Air-Injector Fig. A2: TopVent DHV components 5

TopVent DHV Construction and operation 2.3 Operating modes The TopVent DHV operates in the following modes: Recirculation Recirculation speed 1 Standby The TopTronic C control system regulates these operating modes automatically for each control zone in accordance with the specifications in the calendar. The following points also apply: The operating mode of a control zone can be switched over manually. Each TopVent DHV unit can operate individually in a local operating mode: Off, Recirculation, Recirculation speed 1. You will find a detailed description of the TopTronic C control system in section M 'Control systems' of this handbook. Code Operating mode Description REC Recirculation On/Off recirculation operation with TempTronic algorithm: during heat demand, the unit draws in room air, heats it and blows it back into the room. The room temperature set value day is active. Fan... speed 1 / 2 1) Heating... on 1) for heat demand REC1 Recirculation speed 1 The same as REC, but the unit operates only at speed 1 (low air flow rate) ST Standby The unit is normally switched off. The following functions remain active: CPR Cooling protection: If the room temperature drops below the set value for cooling protection, the unit heats up the room in recirculation operation. Emergency operation Emergency operation is activated by connecting the unit to a power supply (only if there is no bus connection to the zone controller). For example, it is suitable for heating the hall before taking the control system into operation or if the controller fails during the heating period. L_OFF Off (local operating mode) The unit is switched off. Fan... speed 1 1) Heating... on 1) for heat demand Fan... speed 2 Heating... on Fan... speed 2 Heating... on Fan... off Heating... off Fig. A3: TopVent DHV operating modes 6

TopVent DHV Technical data 3 Technical data A 3.1 Unit type reference Unit type Recirculation unit with heating section Unit size 6 or 9 Heating section with coil type A, B or C Air outlet Air-Injector D1 or Air outlet box DK Further options See section K 'Options' TH - 6 A - / ST. D1 / Table A1: Unit type reference 3.2 Application limits Maximum operating pressure 800 kpa Maximum heating medium temperature 1) 90 C Maximum supply air temperature 60 C Maximum extract air temperature 50 C The units cannot be used in: Areas where there is danger of explosion Places with a corrosive or aggressive environment Damp locations Spaces with a large amount of dust 1) Design for higher temperatures on request Table A2: Application limits 3.3 Flow rate, product parameters Unit size DHV-6 DHV-9 Nominal air flow rate m³/h 6000 9000 Floor area reached m² 537 946 Static efficiency of the fans % 48.5 43.0 Coil type A B C A B C Effective electric power input kw 0.60 0.68 0.93 1.01 1.10 1.42 Table A3: TopVent DHV technical data 7

TopVent DHV Technical data 3.4 Heat output Notice The performance data listed here applies to the most frequent design conditions. Use the selection program 'HK-Select' to calculate the performance data for other design data. You can download 'HK-Select' free of charge on the Internet. Heating medium temperature 80/60 C 60/40 C Unit t room Q H max t S p W m W Q H max t S p W m W Size Type C kw m C kpa l/h kw m C kpa l/h A 16 32.8 13.4 34.2 7 1410 18.8 16.8 27.3 2 807 20 30.3 14.0 37.0 6 1301 16.2 17.9 30.0 2 697 16 47.0 11.6 41.3 13 2020 26.9 14.6 31.3 4 1157 DHV-6 B 20 43.4 12.0 43.5 11 1864 23.3 15.5 33.5 3 1001 C 16 76.0 9.4 55.6 18 3267 45.0 11.8 40.3 6 1935 20 70.3 9.8 56.8 16 3022 39.3 12.5 41.5 5 1690 A 16 55.5 13.6 36.3 8 2386 31.7 17.0 28.5 3 1364 20 51.2 14.1 38.9 7 2201 27.4 18.1 31.1 2 1179 16 71.2 12.2 41.5 12 3060 40.6 15.4 31.4 4 1746 DHV-9 B 20 65.7 12.7 43.7 10 2823 35.1 16.5 33.6 3 1509 C 16 117.9 9.8 56.9 18 5066 69.9 12.3 41.1 6 3003 20 109.1 10.2 58.0 15 4686 61.0 13.1 42.1 5 2622 Legend: Type = Type of coil t room = Room air temperature Q = Heat output H max = Maximum mounting height Reference: At room air temperature 16 C: extract air temperature 18 C At room air temperature 20 C: extract air temperature 22 C Table A4: TopVent DHV heat outputs t S = Supply air temperature p W = Water pressure drop m W = Water quantity 3.5 Sound data Unit size DHV-6 DHV-9 Coil type A B C A B C Sound pressure level (at a distance of 5 m) 1) db(a) 51 53 55 54 55 58 Total sound power level db(a) 73 75 77 76 77 80 Octave sound power level 63 Hz db 51 53 55 58 59 61 125 Hz db 56 58 60 61 62 65 250 Hz db 61 63 65 64 65 69 500 Hz db 66 68 70 68 69 73 1000 Hz db 70 72 74 71 72 75 2000 Hz db 66 68 70 71 72 75 4000 Hz db 60 62 64 66 67 70 8000 Hz db 52 54 56 58 59 63 1) with a hemispherical radiation pattern in a low-reflection room Table A5: Sound levels 8

TopVent DHV Technical data 3.6 Dimensions and weights A E 28 4 x M10 F J B G C R 40 30 H K D I A Unit size DHV-6 DHV-9 Return A mm 900 1100 B mm 905 1050 C mm 415 480 D mm 500 630 E mm 594 846 F mm 758 882 G mm 322 367 H mm 244 289 I mm 760 935 J " Rp 1¼ (internal) Rp 1½ (internal) K mm 1020 1220 R mm 977 1152 Water content of Type A B C A B C the coil l 3.1 3.1 6.2 4.7 4.7 9.4 Weight kg 100 100 103 153 153 157 Table A6: Dimensions and weights Flow 9

TopVent DHV Specification texts 4 Specification texts 4.1 TopVent DHV Recirculation unit for heating high spaces Housing made of non-corrosive aluzinc sheet metal, standard equipment with 4 riveting nuts size M10 with hexagon bolts and washers for ceiling installation. Heat exchanger made from copper tubes and aluminium fins, manifolds and distributor made from steel. Fan unit consisting of maintenance-free, direct-drive axial fan with high-efficiency EC motor and balanced rotating wheel with aerodynamically shaped blades and serrated trailing edge. Vortex air distributor with a concentric outlet nozzle, 12 adjustable guide vanes, sound attenuation cowl and supply air temperature sensor, incl. actuator for automatic adjustment of the air blow-out direction from vertical to horizontal. 4.2 Options Air outlet box made of aluzinc sheet metal, with 4 adjustable outlet grilles (replaces the Air-Injector) Suspension set for ceiling installation of the unit consisting of 4 pairs U-profiles made of aluzinc sheet steel, height-adjustable to 1300 mm. Paint according to unit. Filter box with 2 class G4 bag filters (according to DIN EN 779), with a differential pressure control device for monitoring the filter Flat filter box with 4 pleated class G4 cell filters (according to DIN EN 779) with a differential pressure control device for filter monitoring Standard paint finish in Hoval red (RAL 3000) Paint finish as desired in RAL colour No. Recirculation silencer as an attachment to the unit, made of aluzinc sheet metal, lined with sound insulation matting, insertion attenuation 3 db(a) Acoustic cowl consisting of an absorber hood of large volume, insertion attenuation 4 db(a) Hydraulic assembly diverting system Prefabricated assembly for hydraulic diverting system, consisting of mixing valve, regulating valve, ball valve, automatic air vent and screw connections for connection to the unit and to the distributor circuit. Mixing valves Mixing valve with modulating rotary actuator, sized for the coil(s) in the unit. Terminal box Terminal box integrated into the side of the housing to connect supply voltage and accessories. Electrical connection with TopTronic C design Control box fitted at the side of the housing as part of the TopTronic C control system. The following components are installed: Unit controller Main switch Fuse for the electronics Transformer Connection terminals The components of the unit are fully wired up. 4.3 TopTronic C control systems Freely configurable, zone-based control system ex-works for operation of decentralised Hoval indoor climate systems with optimised use of energy, suitable for demand-driven control of overall systems comprising up to 64 control zones each with up to 15 supply and extract air handling units or supply air units and 10 recirculation units. System structure Unit controller: installed in the particular indoor climate unit Zone bus (Modbus): as serial connection of all unit controllers in one control zone with the zone controller; with robust bus protocol via shielded and twisted-pair bus line (bus cables provided by the client) Zone control panel with: System operator terminal Fresh air temperature sensor Zone controllers and room air temperature sensors All components for the electrical power supply and protection System bus (Ethernet): for connecting all zone controllers to one another and to the system operator terminal as well as, if appropriate, the building management system (bus cables provided by the client) Operation TopTronic C-ST as system operator terminal: touch panel for visualisation and control by web browser via HTML interface 10

TopVent DHV Specification texts TopTronic C-ZT as zone operator terminal: for simple on-site operation of a control zone (optional) Manual operating selector switch (optional) Manual operating selector button (optional) Operating of the units via building management system via standardised interfaces (optional) Control functions Control of the supply air temperature using room supply air cascade control via sequential control of the energy recovery and the coils (depending on the unit type) Demand-driven control of the supply air and exhaust air volumetric flows with minimum and maximum limit depending on the room temperature or, optionally, the room air quality (for supply and extract air handling units) Control of the unit including the air distribution according to the specifications of the zone controller Alarms, protection Central alarm management with registration of all alarms (timestamp, priority, status) in an alarm list and alarm memory of the last 50 alarms; forwarding via e-mail can be set in the parameters. If there is a failure of communication, bus stations, sensor systems or supply media, each part of the system transitions to a protection mode which safeguards operation. Frost protection control of the units with constrained control of protection functions to prevent coil icing (for supply air units as well as supply and extract air handling units) A maintenance mode implemented in the control algorithm for testing all physical data points and alarms guarantees high reliability. Options for the control system Indoor climate unit Energy monitoring (for supply and extract air handling units) Door contact (for recirculation units in the 2-pipe system) Pump control for mixing or injection system Return temperature sensor Zone control panel Alarm lamp Socket Additional room air temperature sensor Combination sensor room air quality, temperature and humidity External sensor values External set values Load shedding input Operating selector switch on terminal Operating selector button on terminal Power supply and safety relay Control of distributor pump(s), incl. power supply 4.4 System control for TopVent plants System control for operation of decentralised Hoval indoor climate systems with optimised use of energy, suitable for demand-driven control of TopVent plants comprising 1 control zone with up to 6 supply air units and 10 recirculation units (power supply for the TopVent units provided by the client). System structure Unit controller: installed in the particular indoor climate unit Zone bus (Modbus): as serial connection of all unit controllers with the zone controller; with robust bus protocol via shielded and twisted-pair bus line (bus cables provided by the client) Zone control panel with: Zone controller with operating panel C-SCT, making it simple to operate and monitor the system Fresh air temperature sensor Room temperature sensor External connections: Enable heating Trouble input heating Enable cooling Trouble input cooling Collective trouble indicator Forced off Cooling lock switch Changeover valves heating/cooling Additional room temperature sensor (max. 1) Operating selector switch on terminal (analogue) Operating selector button on terminal (analogue) External setpoint fresh air ratio Control functions Control of the supply air temperature using room supply air cascade control Control of the unit including the air distribution according to the specifications of the zone controller Alarms, protection Central alarm management with registration of all alarms (timestamp, priority, status) in an alarm list and alarm memory of the last 50 alarms. If there is a failure of communication, bus stations, sensor systems or supply media, each part of the system transitions to a protection mode which safeguards operation. Frost protection control of the units with constrained control of protection functions to prevent coil icing (for supply air units) A maintenance mode implemented in the control algorithm for testing all physical data points and alarms guarantees high reliability. A 11

TopVent DHV Specification texts Options for the control system Indoor climate unit Door contact (for recirculation units in the 2-pipe system) Pump control for mixing or injection system Return temperature sensor Zone control panel Additional room temperature sensor Bus interface for operating of the units via building management system 4.5 EasyTronic EC Room temperature controller for TopVent recirculation unit heaters and air curtains with manual setting of the room temperature setpoint, fan speed and, where applicable, air distribution with the Air-Injector, in addition, unit operation subject to a door contact switch, protection rating IP 30. 12

TopVent NHV Content A TopVent NHV Recirculation unit for heating high spaces with lower comfort requirements (e.g. high-bay warehouses) B 1 Use 14 2 Construction and operation 14 3 Technical data 17 4 Specification texts 20 13

TopVent NHV Use 1 Use 2 Construction and operation 1.1 Intended use TopVent NHV units are recirculation units intended for heating high spaces. They have the following functions: Heating (with connection to a hot water supply) Recirculation operation Air distribution via outlet nozzle Air filtration (optional) Also included under intended use are compliance with the installation, commissioning, operating and maintenance provisions (operating instructions). Any use beyond this is considered improper use. The manufacturer can accept no liability for damage resulting from improper use. 1.2 User group The units are only allowed to be installed, operated and maintained by authorised and instructed personnel who are well acquainted with the units and are informed about possible dangers. The TopVent NHV unit is used for low-cost recirculation heating in high halls. The unit is installed under the ceiling. It takes in room air, heats it by means of the heating coil and injects it back into the room via the outlet nozzle. The air distribution cannot be adjusted with TopVent NHV. Therefore, the unit is especially suited to applications where comfort requirements are relatively low (e.g. high-bay warehouses). With its high performance, the TopVent NHV covers a large area. Therefore, compared to other systems, fewer units are needed to achieve the required conditions. 2 unit sizes, variable fans, different coil types and a whole string of accessories provide a tailored solution for any hall. 2.1 Unit construction The TopVent NHV consists of the following components: Heating section (with fan and heating coil) Outlet nozzle Both components are bolted together, but can be dismantled separately again. The operating instructions are for operating engineers and technicians as well as specialists in building, heating and ventilation technology. 14

TopVent NHV Use Housing: Made of corrosion-resistant aluzinc sheet metal Fan: Quiet axial fan with high-efficiency EC motor Unit control box as part of the TopTronic C control system Heat exchanger: Heating coil consisting of copper tubes with aluminium fins Outlet nozzle A B Fig. B1: TopVent NHV structure Heating section Outlet nozzle Fig. B2: TopVent NHV components 15

TopVent NHV Construction and operation 2.2 Operating modes The TopVent NHV operates in the following modes: Recirculation Recirculation speed 1 Standby The TopTronic C control system regulates these operating modes automatically for each control zone in accordance with the specifications in the calendar. The following points also apply: The operating mode of a control zone can be switched over manually. Each TopVent NHV unit can operate individually in a local operating mode: Off, Recirculation, Recirculation speed 1. You will find a detailed description of the TopTronic C control system in section M 'Control systems' of this handbook. Code Operating mode Description REC Recirculation On/Off recirculation operation with TempTronic algorithm: during heat demand, the unit draws in room air, heats it and blows it back into the room. The room temperature set value day is active. Fan... speed 1 / 2 1) Heating... on 1) for heat demand REC1 Recirculation speed 1 The same as REC, but the unit operates only at speed 1 (low air flow rate) ST Standby The unit is normally switched off. The following functions remain active: CPR Cooling protection: If the room temperature drops below the set value for cooling protection, the unit heats up the room in recirculation operation. Emergency operation Emergency operation is activated by connecting the unit to a power supply (only if there is no bus connection to the zone controller). For example, it is suitable for heating the hall before taking the control system into operation or if the controller fails during the heating period. L_OFF Off (local operating mode) The unit is switched off. Fan... speed 1 1) Heating... on 1) for heat demand Fan... speed 2 Heating... on Fan... speed 2 Heating... on Fan... off Heating... off Table B1: TopVent NHV operating modes 16

TopVent NHV Technical data 3 Technical data A 3.1 Unit type reference B Unit type Recirculation unit with heating section Unit size 6 or 9 Heating section with coil type A, B or C Air outlet Outlet nozzle Further options See section K 'Options' TH - 6 A - / ST. DN / Table B2: Unit type reference 3.2 Application limits Maximum operating pressure 800 kpa Maximum heating medium temperature 1) 90 C Maximum supply air temperature 60 C Maximum extract air temperature 50 C The units cannot be used in: Areas where there is danger of explosion Places with a corrosive or aggressive environment Damp locations Spaces with a large amount of dust 1) Design for higher temperatures on request Table B3: Application limits 3.3 Flow rate, product parameters Unit size NHV-6 NHV-9 Nominal air flow rate m³/h 6000 9000 Floor area reached m² 537 946 Static efficiency of the fans % 48.5 43.0 Coil type A B C A B C Effective electric power input kw 0.51 0.58 0.79 0.86 0.93 1.16 Table B4: TopVent NHV technical data 17

TopVent NHV Technical data 3.4 Heat output Notice The performance data listed here applies to the most frequent design conditions. Use the selection program 'HK-Select' to calculate the performance data for other design data. You can download 'HK-Select' free of charge on the Internet. Heating medium temperature 80/60 C 60/40 C Unit t room Q H max t S p W m W Q H max t S p W m W Size Type C kw m C kpa l/h kw m C kpa l/h A 16 32.8 13.4 34.2 7 1410 18.8 16.8 27.3 2 807 20 30.3 14.0 37.0 6 1301 16.2 17.9 30.0 2 697 16 47.0 11.6 41.3 13 2020 26.9 14.6 31.3 4 1157 NHV-6 B 20 43.4 12.0 43.5 11 1864 23.3 15.5 33.5 3 1001 C 16 76.0 9.4 55.6 18 3267 45.0 11.8 40.3 6 1935 20 70.3 9.8 56.8 16 3022 39.3 12.5 41.5 5 1690 A 16 55.5 13.6 36.3 8 2386 31.7 17.0 28.5 3 1364 20 51.2 14.1 38.9 7 2201 27.4 18.1 31.1 2 1179 16 71.2 12.2 41.5 12 3060 40.6 15.4 31.4 4 1746 NHV-9 B 20 65.7 12.7 43.7 10 2823 35.1 16.5 33.6 3 1509 C 16 117.9 9.8 56.9 18 5066 69.9 12.3 41.1 6 3003 20 109.1 10.2 58.0 15 4686 61.0 13.1 42.1 5 2622 Legend: Type = Type of coil t room = Room air temperature Q = Heat output H max = Maximum mounting height Reference: At room air temperature 16 C: extract air temperature 18 C At room air temperature 20 C: extract air temperature 22 C Table B5: TopVent NHV heat outputs t S = Supply air temperature p W = Water pressure drop m W = Water quantity 3.5 Sound data Unit size NHV-6 NHV-9 Coil type A B C A B C Sound pressure level (at a distance of 5 m) 1) db(a) 49 51 53 52 53 56 Total sound power level db(a) 71 73 75 74 75 78 Octave sound power level 63 Hz db 48 50 52 53 56 59 125 Hz db 53 55 57 58 60 63 250 Hz db 58 60 62 61 62 67 500 Hz db 64 66 68 65 67 70 1000 Hz db 68 70 72 70 70 73 2000 Hz db 64 66 68 69 70 73 4000 Hz db 57 59 61 63 65 68 8000 Hz db 50 52 54 56 57 61 1) with a hemispherical radiation pattern in a low-reflection room Table B6: Sound levels 18

TopVent NHV Technical data 3.6 Dimensions and weights A E 28 4 x M10 F B J B G C R 40 30 H K D I A Unit size NHV-6 NHV-9 Return A mm 900 1100 B mm 905 1050 C mm 415 480 D mm 500 630 E mm 594 846 F mm 758 882 G mm 322 367 H mm 244 289 I mm 760 935 J " Rp 1¼ (internal) Rp 1½ (internal) K mm 1020 1220 R mm 977 1152 Water content of Type A B C A B C the coil l 3.1 3.1 6.2 4.7 4.7 9.4 Weight kg 100 100 103 153 153 157 Table B7: Dimensions and weights Flow 19

TopVent NHV Specification texts 4 Specification texts 4.1 TopVent NHV recirculation unit for heating high spaces with lower comfort requirements Housing made of non-corrosive aluzinc sheet metal, standard equipment with 4 riveting nuts size M10 with hexagon bolts and washers for ceiling installation. Heat exchanger made from copper tubes and aluminium fins, manifolds and distributor made from steel. Fan unit consisting of maintenance-free, direct-drive axial fan with high-efficiency EC motor and balanced rotating wheel with aerodynamically shaped blades and serrated trailing edge. Concentric outlet nozzle with a supply air sensor. 4.2 Options Suspension set for ceiling installation of the unit consisting of 4 pairs U-profiles made of aluzinc sheet steel, height-adjustable to 1300 mm. Paint according to unit. Filter box with 2 class G4 bag filters (according to DIN EN 779), with a differential pressure control device for monitoring the filter Flat filter box with 4 pleated class G4 cell filters (according to DIN EN 779) with a differential pressure control device for filter monitoring Standard paint finish in Hoval red (RAL 3000) Paint finish as desired in RAL colour No. Recirculation silencer as an attachment to the unit, made of aluzinc sheet metal, lined with sound insulation matting, insertion attenuation 3 db(a) Hydraulic assembly diverting system Prefabricated assembly for hydraulic diverting system, consisting of mixing valve, regulating valve, ball valve, automatic air vent and screw connections for connection to the unit and to the distributor circuit. Mixing valves Mixing valve with modulating rotary actuator, sized for the coil(s) in the unit. Terminal box Terminal box integrated into the side of the housing to connect supply voltage and accessories. Electrical connection with TopTronic C design Control box fitted at the side of the housing as part of the TopTronic C control system. The following components are installed: Unit controller Main switch Fuse for the electronics Transformer Connection terminals The components of the unit are fully wired up. 4.3 TopTronic C control systems Freely configurable, zone-based control system ex-works for operation of decentralised Hoval indoor climate systems with optimised use of energy, suitable for demand-driven control of overall systems comprising up to 64 control zones each with up to 15 supply and extract air handling units or supply air units and 10 recirculation units. System structure Unit controller: installed in the particular indoor climate unit Zone bus (Modbus): as serial connection of all unit controllers in one control zone with the zone controller; with robust bus protocol via shielded and twisted-pair bus line (bus cables provided by the client) Zone control panel with: System operator terminal Fresh air temperature sensor Zone controllers and room air temperature sensors All components for the electrical power supply and protection System bus (Ethernet): for connecting all zone controllers to one another and to the system operator terminal as well as, if appropriate, the building management system (bus cables provided by the client) Operation TopTronic C-ST as system operator terminal: touch panel for visualisation and control by web browser via HTML interface TopTronic C-ZT as zone operator terminal: for simple on-site operation of a control zone (optional) Manual operating selector switch (optional) Manual operating selector button (optional) Operating of the units via building management system via standardised interfaces (optional) Control functions Control of the supply air temperature using room supply air cascade control via sequential control of the energy recovery and the coils (depending on the unit type) Demand-driven control of the supply air and exhaust air volumetric flows with minimum and maximum limit depending on the room temperature or, optionally, the room air quality (for supply and extract air handling units) 20

TopVent NHV Specification texts Control of the unit including the air distribution according to the specifications of the zone controller Alarms, protection Central alarm management with registration of all alarms (timestamp, priority, status) in an alarm list and alarm memory of the last 50 alarms; forwarding via e-mail can be set in the parameters. If there is a failure of communication, bus stations, sensor systems or supply media, each part of the system transitions to a protection mode which safeguards operation. Frost protection control of the units with constrained control of protection functions to prevent coil icing (for supply air units as well as supply and extract air handling units) A maintenance mode implemented in the control algorithm for testing all physical data points and alarms guarantees high reliability. Options for the control system Indoor climate unit Energy monitoring (for supply and extract air handling units) Door contact (for recirculation units in the 2-pipe system) Pump control for mixing or injection system Return temperature sensor Zone control panel Alarm lamp Socket Additional room air temperature sensor Combination sensor room air quality, temperature and humidity External sensor values External set values Load shedding input Operating selector switch on terminal Operating selector button on terminal Power supply and safety relay Control of distributor pump(s), incl. power supply 4.4 System control for TopVent plants System control for operation of decentralised Hoval indoor climate systems with optimised use of energy, suitable for demand-driven control of TopVent plants comprising 1 control zone with up to 6 supply air units and 10 recirculation units (power supply for the TopVent units provided by the client). System structure Unit controller: installed in the particular indoor climate unit Zone bus (Modbus): as serial connection of all unit controllers with the zone controller; with robust bus protocol via shielded and twisted-pair bus line (bus cables provided by the client) Zone control panel with: Zone controller with operating panel C-SCT, making it simple to operate and monitor the system Fresh air temperature sensor Room temperature sensor External connections: Enable heating Trouble input heating Enable cooling Trouble input cooling Collective trouble indicator Forced off Cooling lock switch Changeover valves heating/cooling Additional room temperature sensor (max. 1) Operating selector switch on terminal (analogue) Operating selector button on terminal (analogue) External setpoint fresh air ratio Control functions Control of the supply air temperature using room supply air cascade control Control of the unit including the air distribution according to the specifications of the zone controller Alarms, protection Central alarm management with registration of all alarms (timestamp, priority, status) in an alarm list and alarm memory of the last 50 alarms. If there is a failure of communication, bus stations, sensor systems or supply media, each part of the system transitions to a protection mode which safeguards operation. Frost protection control of the units with constrained control of protection functions to prevent coil icing (for supply air units) A maintenance mode implemented in the control algorithm for testing all physical data points and alarms guarantees high reliability. Options for the control system Indoor climate unit Door contact (for recirculation units in the 2-pipe system) Pump control for mixing or injection system Return temperature sensor Zone control panel Additional room temperature sensor Bus interface for operating of the units via building management system 4.5 EasyTronic EC Room temperature controller for TopVent recirculation unit heaters and air curtains with manual setting of the room temperature setpoint, fan speed and, where applicable, air distribution with the Air-Injector, in addition, unit operation subject to a door contact switch, protection rating IP 30. A B 21

TopVent DKV Content TopVent DKV Recirculation unit for heating and cooling high spaces in the 2-pipe system C 1 Use 24 2 Construction and operation 24 3 Technical data 27 4 Specification texts 31 23

TopVent DKV Use 1 Use 2 Construction and operation 1.1 Intended use TopVent DKV units are recirculation units intended for heating and cooling high spaces. They have the following functions: Heating (with connection to a hot water supply) Cooling (with connection to a water chiller) Recirculation operation Air distribution with adjustable Air-Injector Air filtration (optional) Also included under intended use are compliance with the installation, commissioning, operating and maintenance provisions (operating instructions). Any use beyond this is considered improper use. The manufacturer can accept no liability for damage resulting from improper use. 1.2 User group The units are only allowed to be installed, operated and maintained by authorised and instructed personnel who are well acquainted with the units and are informed about possible dangers. The operating instructions are for operating engineers and technicians as well as specialists in building, heating and ventilation technology. The TopVent DKV is used to heat and cool in recirculation operation; it was developed specially for use in high halls. The unit is installed under the ceiling. It takes in room air, heats or cools it and blows it back into the room through the Air-Injector. With its high performance and efficient air distribution, the TopVent DKV covers a large area. Therefore, compared to other systems, fewer units are needed to achieve the required conditions. 2 unit sizes, variable fans, different coil types and a whole string of accessories provide a tailored solution for any hall. 2.1 Unit construction The TopVent DKV consists of the following components: Heating /cooling section (with fan, heating/cooling coil and integrated condensate separator for the condensate generated) Automatically adjustable vortex air distributor Air-Injector The unit is insulated to avoid condensation on the external surfaces. Both components are bolted together, but can be dismantled separately again. 2.2 Air distribution with the Air-Injector The patented air distributor called the Air-Injector is the core element. The air discharge angle is set by means of the infinitely variable guide vanes. It depends on the air flow rate, the mounting height and the temperature difference between the supply air and room air. The air is therefore blown into the room vertically downward, conically or horizontally. This ensures that: with each TopVent unit, a large area of the hall can be reached, the occupied area is draught-free, the temperature stratification in the room is reduced, thus saving energy. 24

TopVent DKV Use Housing: Made of corrosion-resistant Aluzinc sheet metal; insulated on the inside Fan: Quiet radial fan with high-efficiency EC motor Heat exchanger: Heating/cooling coil consisting of copper tubes with aluminium fins Condensate separator with condensate connection Unit control box as part of the TopTronic C control system Air-Injector: Patented, automatically adjustable vortex air distributor for draught-free air distribution over a large area (incl. actuator) C Fig. C1: TopVent DKV structure Heating/cooling section Air-Injector Fig. C2: TopVent DKV components 25

TopVent DKV Construction and operation 2.3 Operating modes The TopVent DKV operates in the following modes: Recirculation Recirculation speed 1 Standby The TopTronic C control system regulates these operating modes automatically for each control zone in accordance with the specifications in the calendar. The following points also apply: The operating mode of a control zone can be switched over manually. Each TopVent DKV unit can operate individually in a local operating mode: Off, Recirculation, Recirculation speed 1. You will find a detailed description of the TopTronic C control system in section M 'Control systems' of this handbook. Code Operating mode Description REC Recirculation On/Off operation: during heat or cool demand, the unit draws in room air, heats or cools it and blows it back into the room. The room temperature set value day is active. Fan... speed 1 / 2 1) Heating/cooling... on 1) during heat or cool demand REC1 Recirculation speed 1 The same as REC, but the unit operates only at speed 1 (low air flow rate) ST Standby The unit is normally switched off. The following functions remain active: CPR Cooling protection: If the room temperature drops below the set value for cooling protection, the unit heats up the room in recirculation operation. OPR Overheating protection: If the room temperature rises above the set value for overheating protection, the unit cools down the room in recirculation operation. Emergency operation Emergency operation is activated by connecting the unit to a power supply (only if there is no bus connection to the zone controller). For example, it is suitable for heating the hall before taking the control system into operation or if the controller fails during the heating period. L_OFF Off (local operating mode) The unit is switched off. Fan... speed 1 1) Heating/cooling... on 1) during heat or cool demand Fan... speed 2 Heating... on Fan... speed 2 Cooling... on Fan... speed 2 Heating... on Fan... off Heating... off Table C1: TopVent DKV operating modes 26

TopVent DKV Technical data 3 Technical data 3.1 Unit type reference Unit type Recirculation unit with heating/cooling section TC - 6 - C / ST. D1 / C Unit size 6 or 9 Heating/cooling section with coil type C or D Air outlet Air-Injector D1 or Air outlet box DK Further options See section K 'Options' Table C2: Unit type reference 3.2 Application limits Maximum operating pressure 800 kpa Maximum heating medium temperature 1) 90 C Maximum supply air temperature 60 C Maximum extract air temperature 50 C Maximum amount of condensate DKV-6 90 kg/h DKV-9 150 kg/h Minimum air flow rate DKV-6 3100 m³/h DKV-9 5000 m³/h The units cannot be used in: Areas where there is danger of explosion Places with a corrosive or aggressive environment Damp locations Spaces with a large amount of dust 1) Design for higher temperatures on request Table C3: Application limits 27

TopVent DKV Technical data 3.3 Flow rate, product parameters Unit size DKV-6 DKV-9 Nominal air flow rate m³/h 6000 9000 Floor area reached m² 537 946 Static efficiency of the fans % 63.6 63.6 Coil type C C D Effective electric power input kw 0.50 1.29 1.41 Table C4: TopVent DKV technical data 3.4 Heat output Notice The performance data listed here applies to the most frequent design conditions. Use the selection program 'HK-Select' to calculate the performance data for other design data. You can download 'HK-Select' free of charge on the Internet. Heating medium temperature 80/60 C 60/40 C Unit t room Q H max t S p W m W Q H max t S p W m W Size Type C kw m C kpa l/h kw m C kpa l/h 16 76.0 9.4 55.6 18 3267 45.0 11.8 40.3 6 1935 DKV-6 C 20 70.3 9.8 56.8 16 3022 39.3 12.5 41.5 5 1690 16 117.9 9.8 56.9 18 5066 69.9 12.3 41.1 6 3003 C 20 109.1 10.2 58.0 15 4686 61.0 13.1 42.1 5 2622 DKV-9 16 140.7 9.1 64.4 15 6045 85.4 11.3 46.2 5 3670 D 20 130.4 9.5 65.0 13 5600 75.1 12.0 46.8 4 3225 Legend: Type = Type of coil t room = Room air temperature Q = Heat output H max = Maximum mounting height Reference: At room air temperature 16 C: extract air temperature 18 C At room air temperature 20 C: extract air temperature 22 C Table C5: TopVent DKV heat outputs t S = Supply air temperature p W = Water pressure drop m W = Water quantity 28

TopVent DKV Technical data 3.5 Cooling capacities Cooling medium temperature 6/12 C 8/14 C Unit t room RH room Q sen Q tot t S p W m W m C Q sen Q tot t S p W m W m C Size Type C % kw kw C kpa l/h kg/h kw kw C kpa l/h kg/h DKV-6 DKV-9 C C D 22 26 22 26 22 26 Legend: Type = Type of coil t room = Room air temperature RH room = Relative humidity of the room air Q sen = Sensible cooling capacity Q tot = Total cooling capacity 50 20.4 20.4 13.9 15 2925 0.0 18.0 18.0 15.1 12 2573 0.0 70 18.5 27.7 14.9 28 3960 13.5 16.0 21.4 16.1 17 3064 7.9 50 25.2 31.1 15.5 36 4448 8.6 22.7 24.8 16.7 23 3552 3.0 70 23.2 43.7 16.5 71 6263 30.2 20.8 37.5 17.7 52 5367 24.6 50 31.4 31.4 13.6 15 4496 0.0 27.6 27.6 14.9 12 3947 0.0 70 28.4 44.7 14.6 31 6401 23.9 24.6 28.2 15.9 12 4031 5.2 50 38.8 49.9 15.2 38 7149 16.3 35.0 35.0 16.4 19 5013 0.0 70 35.9 69.8 16.2 75 9989 49.8 32.0 53.2 17.4 44 7619 31.1 50 37.1 37.1 11.8 13 5307 0.0 32.2 32.2 13.4 10 4613 0.0 70 34.6 56.7 12.6 30 8118 32.5 29.7 45.1 14.2 19 6459 22.6 50 46.4 62.4 12.7 36 8941 23.5 41.6 50.9 14.3 24 7282 13.6 70 43.9 87.4 13.5 70 12513 63.9 39.1 75.8 15.1 53 10854 54.0 t S = Supply air temperature p W = Water pressure drop m W = Water quantity m C = Condensate quantity C Reference: At room air temperature 22 C: extract air temperature 24 C At room air temperature 26 C: extract air temperature 28 C Table C6: TopVent DKV cooling capacities 3.6 Sound levels Unit size DKV-6 DKV-9 Sound pressure level (at a distance of 5 m) 1) db(a) 51 59 Total sound power level db(a) 73 81 Octave sound power level 63 Hz db 41 49 125 Hz db 59 67 250 Hz db 62 70 500 Hz db 65 73 1000 Hz db 67 75 2000 Hz db 67 75 4000 Hz db 66 74 8000 Hz db 61 68 1) with a hemispherical radiation pattern in a low-reflection room Table C7: Sound levels 29

TopVent DKV Technical data 3.7 Dimensions and weights 29 N F 40 E 4 x M10 27 J C 80 M L R B K G H D I A Unit size DKV-6/C DKV-9/C DKV-9/D Return A mm 900 1100 1100 B mm 1344 1430 1430 C mm 579 615 615 D mm 500 630 630 E mm 594 846 846 F mm 758 882 882 G mm 77 93 85 H mm 155 171 180 I mm 760 935 935 J " Rp 1 ¼ (internal) Rp 1½ (internal) Rp 2 (internal) K mm 521 558 558 L mm 275 245 245 M " R 1 (external) R 1 (external) R 1 (external) N mm 1020 1220 1220 R mm 1373 1459 1459 Water content of the coil l 6.2 9.4 14.2 Weight kg 202 264 289 Table C8: Dimensions and weights Flow Condensate connection Access panel 30

TopVent DKV Specification texts 4 Specification texts 4.1 TopVent DKV Recirculation unit for heating and cooling high spaces in the 2-pipe system Housing made of non-corrosive Aluzinc sheet metal, insulated on the inside, standard equipment with 4 riveting nuts size M10 with hexagon bolts and washers for ceiling installation. Heat exchanger made from copper tubes and aluminium fins, manifolds and distributor made from steel, integrated condensate separator with condensate connection. Fan unit consisting of maintenance-free, direct-drive radial fan with high-efficiency EC motor and free-running rotating wheel made of a high-performance composite material with backwards-curved, 3D contoured blades. Vortex air distributor with a concentric outlet nozzle, 12 adjustable guide vanes, sound attenuation cowl and supply air temperature sensor, incl. actuator for automatic adjustment of the air blow-out direction from vertical to horizontal. 4.2 Options Air outlet box made of aluzinc sheet metal, with 4 adjustable outlet grilles (replaces the Air-Injector) Suspension set for ceiling installation of the unit consisting of 4 pairs U-profiles made of aluzinc sheet steel, height-adjustable to 1300 mm. Paint according to unit. Filter box with 2 class G4 bag filters (according to DIN EN 779), with a differential pressure control device for monitoring the filter Flat filter box with 4 pleated class G4 cell filters (according to DIN EN 779) with a differential pressure control device for filter monitoring Standard paint finish in Hoval red (RAL 3000) Paint finish as desired in RAL colour No. Recirculation silencer as an attachment to the unit, made of aluzinc sheet metal, lined with sound insulation matting, insertion attenuation 3 db(a) Hydraulic assembly diverting system Prefabricated assembly for hydraulic diverting system, consisting of mixing valve, regulating valve, ball valve, automatic air vent and screw connections for connection to the unit and to the distributor circuit. Mixing valves Mixing valve with modulating rotary actuator, sized for the coil(s) in the unit. Condensate pump Consisting of a centrifugal pump, a drip tray, max. delivery rate of 150 l/h with a delivery head of 3 m Electrical connection with TopTronic C design Control box fitted at the side of the housing as part of the TopTronic C control system. The following components are installed: Unit controller Main switch Fuse for the electronics Transformer Connection terminals The components of the unit are fully wired up. 4.3 TopTronic C control systems Freely configurable, zone-based control system ex-works for operation of decentralised Hoval indoor climate systems with optimised use of energy, suitable for demand-driven control of overall systems comprising up to 64 control zones each with up to 15 supply and extract air handling units or supply air units and 10 recirculation units. System structure Unit controller: installed in the particular indoor climate unit Zone bus (Modbus): as serial connection of all unit controllers in one control zone with the zone controller; with robust bus protocol via shielded and twisted-pair bus line (bus cables provided by the client) Zone control panel with: System operator terminal Fresh air temperature sensor Zone controllers and room air temperature sensors All components for the electrical power supply and protection System bus (Ethernet): for connecting all zone controllers to one another and to the system operator terminal as well as, if appropriate, the building management system (bus cables provided by the client) Operation TopTronic C-ST as system operator terminal: touch panel for visualisation and control by web browser via HTML interface TopTronic C-ZT as zone operator terminal: for simple on-site operation of a control zone (optional) Manual operating selector switch (optional) Manual operating selector button (optional) Operating of the units via building management system via standardised interfaces (optional) C 31

TopVent DKV Specification texts Control functions Control of the supply air temperature using room supply air cascade control via sequential control of the energy recovery and the coils (depending on the unit type) Demand-driven control of the supply air and exhaust air volumetric flows with minimum and maximum limit depending on the room temperature or, optionally, the room air quality (for supply and extract air handling units) Control of the unit including the air distribution according to the specifications of the zone controller Alarms, protection Central alarm management with registration of all alarms (timestamp, priority, status) in an alarm list and alarm memory of the last 50 alarms; forwarding via e-mail can be set in the parameters. If there is a failure of communication, bus stations, sensor systems or supply media, each part of the system transitions to a protection mode which safeguards operation. Frost protection control of the units with constrained control of protection functions to prevent coil icing (for supply air units as well as supply and extract air handling units) A maintenance mode implemented in the control algorithm for testing all physical data points and alarms guarantees high reliability. Options for the control system Indoor climate unit Energy monitoring (for supply and extract air handling units) Door contact (for recirculation units in the 2-pipe system) Pump control for mixing or injection system Return temperature sensor Zone control panel Alarm lamp Socket Additional room air temperature sensor Combination sensor room air quality, temperature and humidity External sensor values External set values Load shedding input Operating selector switch on terminal Operating selector button on terminal Power supply and safety relay Control of distributor pump(s), incl. power supply 4.4 System control for TopVent plants System control for operation of decentralised Hoval indoor climate systems with optimised use of energy, suitable for demand-driven control of TopVent plants comprising 1 control zone with up to 6 supply air units and 10 recirculation units (power supply for the TopVent units provided by the client). System structure Unit controller: installed in the particular indoor climate unit Zone bus (Modbus): as serial connection of all unit controllers with the zone controller; with robust bus protocol via shielded and twisted-pair bus line (bus cables provided by the client) Zone control panel with: Zone controller with operating panel C-SCT, making it simple to operate and monitor the system Fresh air temperature sensor Room temperature sensor External connections: Enable heating Trouble input heating Enable cooling Trouble input cooling Collective trouble indicator Forced off Cooling lock switch Changeover valves heating/cooling Additional room temperature sensor (max. 1) Operating selector switch on terminal (analogue) Operating selector button on terminal (analogue) External setpoint fresh air ratio Control functions Control of the supply air temperature using room supply air cascade control Control of the unit including the air distribution according to the specifications of the zone controller Alarms, protection Central alarm management with registration of all alarms (timestamp, priority, status) in an alarm list and alarm memory of the last 50 alarms. If there is a failure of communication, bus stations, sensor systems or supply media, each part of the system transitions to a protection mode which safeguards operation. Frost protection control of the units with constrained control of protection functions to prevent coil icing (for supply air units) A maintenance mode implemented in the control algorithm for testing all physical data points and alarms guarantees high reliability. Options for the control system Indoor climate unit Door contact (for recirculation units in the 2-pipe system) Pump control for mixing or injection system Return temperature sensor Zone control panel Additional room temperature sensor Bus interface for operating of the units via building management system 32

TopVent DHKV Content TopVent DHKV Recirculation unit for heating and cooling high spaces in the 4-pipe system D 1 Use 34 2 Construction and operation 34 3 Technical data 37 4 Specification texts 41 33

TopVent DHKV Use 1 Use 2 Construction and operation 1.1 Intended use TopVent DHKV units are recirculation units intended for heating and cooling high spaces. They have the following functions: Heating (with connection to a hot water supply) Cooling (with connection to a water chiller) Recirculation operation Air distribution with adjustable Air-Injector Air filtration (optional) Also included under intended use are compliance with the installation, commissioning, operating and maintenance provisions (operating instructions). Any use beyond this is considered improper use. The manufacturer can accept no liability for damage resulting from improper use. 1.2 User group The units are only allowed to be installed, operated and maintained by authorised and instructed personnel who are well acquainted with the units and are informed about possible dangers. The operating instructions are for operating engineers and technicians as well as specialists in building, heating and ventilation technology. The TopVent DHKV is used to heat and cool in recirculation operation; it was developed specially for use in high halls. The unit is installed under the ceiling. It takes in room air, heats or cools it and blows it back into the room through the Air-Injector. With its high performance and efficient air distribution, the TopVent DHKV covers a large area. Therefore, compared to other systems, fewer units are needed to achieve the required conditions. 2 unit sizes, variable fans, different coil types and a whole string of accessories provide a tailored solution for any hall. 2.1 Unit construction The TopVent DHKV consists of the following components: Heating section (with heating coil) Cooling section (with fan, cooling coil and integrated condensate separator for the condensate generated) Automatically adjustable vortex air distributor Air-Injector The unit is insulated to avoid condensation on the external surfaces. Both components are bolted together, but can be dismantled separately again. 2.2 Air distribution with the Air-Injector The patented air distributor called the Air-Injector is the core element. The air discharge angle is set by means of the infinitely variable guide vanes. It depends on the air flow rate, the mounting height and the temperature difference between the supply air and room air. The air is therefore blown into the room vertically downward, conically or horizontally. This ensures that: with each TopVent unit, a large area of the hall can be reached, the occupied area is draught-free, the temperature stratification in the room is reduced, thus saving energy. 34

TopVent DHKV Use Housing: Made of corrosion-resistant Aluzinc sheet metal; insulated on the inside Fan: Quiet radial fan with high-efficiency EC motor Condensate separator with condensate connection Heat exchanger: Cooling coil consisting of copper tubes with aluminium fins Heat exchanger: Heating coil consisting of copper tubes with aluminium fins Unit control box as part of the TopTronic C control system Air-Injector: Patented, automatically adjustable vortex air distributor for draught-free air distribution over a large area (incl. actuator) D Fig. D1: TopVent DHKV structure Heating section Cooling section Air-Injector Fig. D2: TopVent DHKV components 35

TopVent DHKV Construction and operation 2.3 Operating modes The TopVent DHKV operates in the following modes: Recirculation Recirculation speed 1 Standby The TopTronic C control system regulates these operating modes automatically for each control zone in accordance with the specifications in the calendar. The following points also apply: The operating mode of a control zone can be switched over manually. Each TopVent DHKV unit can operate individually in a local operating mode: Off, Recirculation, Recirculation speed 1. You will find a detailed description of the TopTronic C control system in section M 'Control systems' of this handbook. Code Operating mode Description REC Recirculation On/Off operation: during heat or cool demand, the unit draws in room air, heats or cools it and blows it back into the room. The room temperature set value day is active. Fan... speed 1 / 2 1) Heating/cooling... on 1) during heat or cool demand REC1 Recirculation speed 1 The same as REC, but the unit operates only at speed 1 (low air flow rate) ST Standby The unit is normally switched off. The following functions remain active: CPR Cooling protection: If the room temperature drops below the set value for cooling protection, the unit heats up the room in recirculation operation. OPR Overheating protection: If the room temperature rises above the set value for overheating protection, the unit cools down the room in recirculation operation. Emergency operation Emergency operation is activated by connecting the unit to a power supply (only if there is no bus connection to the zone controller). For example, it is suitable for heating the hall before taking the control system into operation or if the controller fails during the heating period. L_OFF Off (local operating mode) The unit is switched off. Fan... speed 1 1) Heating/cooling... on 1) during heat or cool demand Fan... speed 2 Heating... on Fan... speed 2 Cooling... on Fan... speed 2 Heating... on Fan... off Heating... off Table D1: TopVent DHKV operating modes 36

TopVent DHKV Technical data 3 Technical data 3.1 Unit type reference THC - 6 B C / ST. D1 / Unit type Recirculation unit with heating and cooling section Unit size 6 or 9 D Heating section with coil type A, B or C Cooling section with coil type C or D Air outlet Air-Injector D1 or Air outlet box DK Further options See section K 'Options' Table D2: Unit type reference 3.2 Application limits Maximum operating pressure 800 kpa Maximum heating medium temperature 1) 90 C Maximum supply air temperature 60 C Maximum extract air temperature 50 C Maximum amount of condensate DHKV-6 90 kg/h DHKV-9 150 kg/h Minimum air flow rate DHKV-6 3100 m³/h DHKV-9 5000 m³/h The units cannot be used in: Areas where there is danger of explosion Places with a corrosive or aggressive environment Damp locations Spaces with a large amount of dust 1) Design for higher temperatures on request Table D3: Application limits 37

TopVent DHKV Technical data 3.3 Flow rate, product parameters Unit size DHKV-6 DHKV-9 Nominal air flow rate m³/h 6000 9000 Floor area reached m² 537 946 Static efficiency of the fans % 63.6 63.6 Coil type AC BC CC AC AD BC BD CC CD Effective electric power input kw 0.72 0.76 0.87 1.37 1.49 1.42 1.54 1.56 1.68 Table D4: TopVent DHKV technical data 3.4 Heat output Notice The performance data listed here applies to the most frequent design conditions. Use the selection program 'HK-Select' to calculate the performance data for other design data. You can download 'HK-Select' free of charge on the Internet. Heating medium temperature 80/60 C 60/40 C Unit t room Q H max t S p W m W Q H max t S p W m W Size Type C kw m C kpa l/h kw m C kpa l/h A 16 32.8 13.4 34.2 7 1410 18.8 16.8 27.3 2 807 20 30.3 14.0 37.0 6 1301 16.2 17.9 30.0 2 697 16 47.0 11.6 41.3 13 2020 26.9 14.6 31.3 4 1157 DHKV-6 B 20 43.4 12.0 43.5 11 1864 23.3 15.5 33.5 3 1001 C 16 76.0 9.4 55.6 18 3267 45.0 11.8 40.3 6 1935 20 70.3 9.8 56.8 16 3022 39.3 12.5 41.5 5 1690 A 16 55.5 13.6 36.3 8 2386 31.7 17.0 28.5 3 1364 20 51.2 14.1 38.9 7 2201 27.4 18.1 31.1 2 1179 16 71.2 12.2 41.5 12 3060 40.6 15.4 31.4 4 1746 DHKV-9 B 20 65.7 12.7 43.7 10 2823 35.1 16.5 33.6 3 1509 C 16 117.9 9.8 56.9 18 5066 69.9 12.3 41.1 6 3003 20 109.1 10.2 58.0 15 4686 61.0 13.1 42.1 5 2622 Legend: Type = Type of coil t room = Room air temperature Q = Heat output H max = Maximum mounting height Reference: At room air temperature 16 C: extract air temperature 18 C At room air temperature 20 C: extract air temperature 22 C Table D5: TopVent DHKV heat outputs t S = Supply air temperature p W = Water pressure drop m W = Water quantity 38

TopVent DHKV Technical data 3.5 Cooling capacities Cooling medium temperature 6/12 C 8/14 C Unit t room RH room Q sen Q tot t S p W m W m C Q sen Q tot t S p W m W m C Size Type C % kw kw C kpa l/h kg/h kw kw C kpa l/h kg/h DHKV-6 DHKV-9 C C D 22 26 22 26 22 26 Legend: Type = Type of coil t room = Room air temperature RH room = Relative humidity of the room air Q sen = Sensible cooling capacity Q tot = Total cooling capacity 50 20.4 20.4 13.9 15 2925 0.0 18.0 18.0 15.1 12 2573 0.0 70 18.5 27.7 14.9 28 3960 13.5 16.0 21.4 16.1 17 3064 7.9 50 25.2 31.1 15.5 36 4448 8.6 22.7 24.8 16.7 23 3552 3.0 70 23.2 43.7 16.5 71 6263 30.2 20.8 37.5 17.7 52 5367 24.6 50 31.4 31.4 13.6 15 4496 0.0 27.6 27.6 14.9 12 3947 0.0 70 28.4 44.7 14.6 31 6401 23.9 24.6 28.2 15.9 12 4031 5.2 50 38.8 49.9 15.2 38 7149 16.3 35.0 35.0 16.4 19 5013 0.0 70 35.9 69.8 16.2 75 9989 49.8 32.0 53.2 17.4 44 7619 31.1 50 37.1 37.1 11.8 13 5307 0.0 32.2 32.2 13.4 10 4613 0.0 70 34.6 56.7 12.6 30 8118 32.5 29.7 45.1 14.2 19 6459 22.6 50 46.4 62.4 12.7 36 8941 23.5 41.6 50.9 14.3 24 7282 13.6 70 43.9 87.4 13.5 70 12513 63.9 39.1 75.8 15.1 53 10854 54.0 t S = Supply air temperature p W = Water pressure drop m W = Water quantity m C = Condensate quantity D Reference: At room air temperature 22 C: extract air temperature 24 C At room air temperature 26 C: extract air temperature 28 C Table D6: TopVent DHKV cooling capacities 3.6 Sound levels Unit size DHKV-6 DHKV-9 Sound pressure level (at a distance of 5 m) 1) db(a) 53 60 Total sound power level db(a) 75 82 Octave sound power level 63 Hz db 39 47 125 Hz db 58 66 250 Hz db 61 68 500 Hz db 67 74 1000 Hz db 70 77 2000 Hz db 69 76 4000 Hz db 66 74 8000 Hz db 56 67 1) with a hemispherical radiation pattern in a low-reflection room Table D7: Sound levels 39

3.7 Dimensions and weights 29 F N E Q R S B C L M H G I TopVent DHKV Technical data 27 P O J 4 x M10 80 D K A Unit size DHKV-6 DHKV-9 DHKV-9 Heating circuit return Coil type AC BC CC AC BC CC AD BD CD Heating circuit flow A mm 900 1100 1100 Cooling circuit return B mm 1647 1765 1765 C mm 270 300 300 Cooling circuit flow D mm 500 630 630 Condensate connection E mm 594 846 846 Access panel F mm 758 882 882 G mm 101 111 111 H mm 179 189 189 I mm 349 395 386 J mm 427 473 481 K mm 760 935 935 L mm 579 615 615 M mm 275 245 245 N mm 1020 1220 1220 O mm 792 860 860 P mm 312 342 342 Q " Rp 1¼ (internal) Rp 1½ (internal) Rp 1½ (internal) R " Rp 1¼ (internal) Rp 1½ (internal) Rp 2 (internal) S " R 1 (external) R 1 (external) R 1 (external) Water content of heating coil l 3.1 3.1 6.2 4.7 4.7 9.4 4.7 4.7 9.4 Water content of cooling coil l 6.2 6.2 6.2 9.4 9.4 9.4 14.2 14.2 14.2 Weight kg 261 261 269 335 336 346 346 347 357 Table D8: Dimensions and weights 40

TopVent DHKV Specification texts 4 Specification texts 4.1 TopVent DHKV Recirculation unit for heating and cooling high spaces in the 4-pipe system Housing made of non-corrosive Aluzinc sheet metal, insulated on the inside, standard equipment with 4 riveting nuts size M10 with hexagon bolts and washers for ceiling installation. The heat exchangers for heating and cooling are made from copper tubes and aluminium fins, manifolds and distributor made from steel, 1 integrated condensate separator with condensate connection. Fan unit consisting of maintenance-free, direct-drive radial fan with high-efficiency EC motor and free-running rotating wheel made of a high-performance composite material with backwards-curved, 3D contoured blades. Vortex air distributor with a concentric outlet nozzle, 12 adjustable guide vanes, sound attenuation cowl and supply air temperature sensor, incl. actuator for automatic adjustment of the air blow-out direction from vertical to horizontal. 4.2 Options Air outlet box made of aluzinc sheet metal, with 4 adjustable outlet grilles (replaces the Air-Injector) Suspension set for ceiling installation of the unit consisting of 4 pairs U-profiles made of aluzinc sheet steel, height-adjustable to 1300 mm. Paint according to unit. Filter box with 2 class G4 bag filters (according to DIN EN 779), with a differential pressure control device for monitoring the filter Flat filter box with 4 pleated class G4 cell filters (according to DIN EN 779) with a differential pressure control device for filter monitoring Standard paint finish in Hoval red (RAL 3000) Paint finish as desired in RAL colour No. Recirculation silencer as an attachment to the unit, made of aluzinc sheet metal, lined with sound insulation matting, insertion attenuation 3 db(a) Hydraulic assembly diverting system Prefabricated assembly for hydraulic diverting system, consisting of mixing valve, regulating valve, ball valve, automatic air vent and screw connections for connection to the unit and to the distributor circuit. Mixing valves Mixing valve with modulating rotary actuator, sized for the coil(s) in the unit. Condensate pump Consisting of a centrifugal pump, a drip tray, max. delivery rate of 150 l/h with a delivery head of 3 m Electrical connection with TopTronic C design Control box fitted at the side of the housing as part of the TopTronic C control system. The following components are installed: Unit controller Main switch Fuse for the electronics Transformer Connection terminals The components of the unit are fully wired up. 4.3 TopTronic C control systems Freely configurable, zone-based control system ex-works for operation of decentralised Hoval indoor climate systems with optimised use of energy, suitable for demand-driven control of overall systems comprising up to 64 control zones each with up to 15 supply and extract air handling units or supply air units and 10 recirculation units. System structure Unit controller: installed in the particular indoor climate unit Zone bus (Modbus): as serial connection of all unit controllers in one control zone with the zone controller; with robust bus protocol via shielded and twisted-pair bus line (bus cables provided by the client) Zone control panel with: System operator terminal Fresh air temperature sensor Zone controllers and room air temperature sensors All components for the electrical power supply and protection System bus (Ethernet): for connecting all zone controllers to one another and to the system operator terminal as well as, if appropriate, the building management system (bus cables provided by the client) Operation TopTronic C-ST as system operator terminal: touch panel for visualisation and control by web browser via HTML interface TopTronic C-ZT as zone operator terminal: for simple on-site operation of a control zone (optional) Manual operating selector switch (optional) Manual operating selector button (optional) Operating of the units via building management system via standardised interfaces (optional) D 41

TopVent DHKV Specification texts Control functions Control of the supply air temperature using room supply air cascade control via sequential control of the energy recovery and the coils (depending on the unit type) Demand-driven control of the supply air and exhaust air volumetric flows with minimum and maximum limit depending on the room temperature or, optionally, the room air quality (for supply and extract air handling units) Control of the unit including the air distribution according to the specifications of the zone controller Alarms, protection Central alarm management with registration of all alarms (timestamp, priority, status) in an alarm list and alarm memory of the last 50 alarms; forwarding via e-mail can be set in the parameters. If there is a failure of communication, bus stations, sensor systems or supply media, each part of the system transitions to a protection mode which safeguards operation. Frost protection control of the units with constrained control of protection functions to prevent coil icing (for supply air units as well as supply and extract air handling units) A maintenance mode implemented in the control algorithm for testing all physical data points and alarms guarantees high reliability. Options for the control system Indoor climate unit Energy monitoring (for supply and extract air handling units) Door contact (for recirculation units in the 2-pipe system) Pump control for mixing or injection system Return temperature sensor Zone control panel Alarm lamp Socket Additional room air temperature sensor Combination sensor room air quality, temperature and humidity External sensor values External set values Load shedding input Operating selector switch on terminal Operating selector button on terminal Power supply and safety relay Control of distributor pump(s), incl. power supply 4.4 System control for TopVent plants System control for operation of decentralised Hoval indoor climate systems with optimised use of energy, suitable for demand-driven control of TopVent plants comprising 1 control zone with up to 6 supply air units and 10 recirculation units (power supply for the TopVent units provided by the client). System structure Unit controller: installed in the particular indoor climate unit Zone bus (Modbus): as serial connection of all unit controllers with the zone controller; with robust bus protocol via shielded and twisted-pair bus line (bus cables provided by the client) Zone control panel with: Zone controller with operating panel C-SCT, making it simple to operate and monitor the system Fresh air temperature sensor Room temperature sensor External connections: Enable heating Trouble input heating Enable cooling Trouble input cooling Collective trouble indicator Forced off Cooling lock switch Changeover valves heating/cooling Additional room temperature sensor (max. 1) Operating selector switch on terminal (analogue) Operating selector button on terminal (analogue) External setpoint fresh air ratio Control functions Control of the supply air temperature using room supply air cascade control Control of the unit including the air distribution according to the specifications of the zone controller Alarms, protection Central alarm management with registration of all alarms (timestamp, priority, status) in an alarm list and alarm memory of the last 50 alarms. If there is a failure of communication, bus stations, sensor systems or supply media, each part of the system transitions to a protection mode which safeguards operation. Frost protection control of the units with constrained control of protection functions to prevent coil icing (for supply air units) A maintenance mode implemented in the control algorithm for testing all physical data points and alarms guarantees high reliability. Options for the control system Indoor climate unit Door contact (for recirculation units in the 2-pipe system) Pump control for mixing or injection system Return temperature sensor Zone control panel Additional room temperature sensor Bus interface for operating of the units via building management system 42

TopVent commercial CUM Content TopVent commercial CUM Roof unit for heating and cooling supermarkets E 1 Use 44 2 Construction and operation 44 3 Technical data 47 4 Specification texts 50 43

TopVent commercial CUM Use 1 Use 2 Construction and operation 1.1 Intended use TopVent commercial CUM units are recirculation units intended for heating and cooling large spaces. They have the following functions: Heating (with connection to a hot water supply) Cooling (with connection to a water chiller) Recirculation operation Air distribution with Air-Injector Air filtration (optional) Also included under intended use are compliance with the installation, commissioning, operating and maintenance provisions (operating instructions). Any use beyond this is considered improper use. The manufacturer can accept no liability for damage resulting from improper use. 1.2 User group The units are only allowed to be installed, operated and maintained by authorised and instructed personnel who are well acquainted with the units and are informed about possible dangers. The operating instructions are for operating engineers and technicians as well as specialists in building, heating and ventilation technology. The TopVent commercial CUM unit is used for heating and cooling in recirculation operation; it was developed specially for use in hypermarkets and supermarkets. The unit is installed in the roof with the corresponding roof frame. It takes in indoor air, heats or cools it and blows it back into the room through the Air-Injector. With its high performance and efficient air distribution the TopVent commercial CUM covers a large area. Therefore, compared to other systems, fewer units are needed to achieve the required conditions. As they are installed in the roof, the units do not protrude so far into the room and maintenance work can be performed from the roof without disturbing operations. 2.1 Unit construction TopVent commercial CUM consists of the following components: Kit for roof installation consisting of: Recirculation roof hood (with access door) Roof frame Heating /cooling section (with fan, heating/cooling coil and integrated condensate separator for the condensate generated) Automatically adjustable vortex air distributor Air-Injector The unit is insulated to avoid condensation on the external surfaces. The components are bolted together, but can be dismantled separately again. 2.2 Air distribution with the Air-Injector The patented air distributor called the Air-Injector is the core element. The air discharge angle is set by means of the infinitely variable guide vanes. It depends on the air flow rate, the mounting height and the temperature difference between the supply air and room air. The air is therefore blown into the room vertically downward, conically or horizontally. This ensures that: with each TopVent unit, a large area of the hall can be reached, the occupied area is draught-free, the temperature stratification in the room is reduced, thus saving energy. 44

TopVent commercial CUM Use Housing: Made of corrosion-resistant Aluzinc sheet metal; insulated on the inside Heat exchanger: Heating/cooling coil consisting of copper tubes with aluminium fins Roof frame: Made of sheet steel (insulation on site) Roof hood: Insulated, easy to remove with 4 handles Unit control box as part of the TopTronic C control system, easily accessible behind the access door Condensate separator: With condensate connection Fan: Quiet radial fan with high-efficiency EC motor Air-Injector: Patented, automatically adjustable vortex air distributor for draught-free air distribution over a large area (incl. actuator) E Fig. E1: TopVent commercial CUM structure Recirculation roof hood Roof frame Heating/cooling section Air-Injector Fig. E2: TopVent commercial CUM components 45

TopVent commercial CUM Construction and operation 2.3 Operating modes The TopVent commercial CUM operates in the following modes: Recirculation Recirculation speed 1 Standby The TopTronic C control system regulates these operating modes automatically for each control zone in accordance with the specifications in the calendar. The following points also apply: The operating mode of a control zone can be switched over manually. Each TopVent commercial CUM unit can operate individually in a local operating mode: Off, Recirculation, Recirculation speed 1. You will find a detailed description of the TopTronic C control system in section M 'Control systems' of this handbook. Code Operating mode Description REC Recirculation On/Off operation: during heat or cool demand, the unit draws in room air, heats or cools it and blows it back into the room. The room temperature set value day is active. Fan... speed 1 / 2 1) Heating/cooling... on 1) 1) during heat or cool demand REC1 Recirculation speed 1 The same as REC, but the unit operates only at speed 1 (low air flow rate) ST Standby The unit is normally switched off. The following functions remain active: CPR Cooling protection: If the room temperature drops below the set value for cooling protection, the unit heats up the room in recirculation operation. OPR Overheating protection: If the room temperature rises above the set value for overheating protection, the unit cools down the room in recirculation operation. Emergency operation Emergency operation is activated by connecting the unit to a power supply (only if there is no bus connection to the zone controller). For example, it is suitable for heating the hall before taking the control system into operation or if the controller fails during the heating period. L_OFF Off (local operating mode) The unit is switched off. Table E1: TopVent commercial CUM operating modes Fan... speed 1 1) Heating/cooling... on 1) 1) during heat or cool demand Fan... speed 2 Heating... on Fan... speed 2 Cooling... on Fan... speed 2 Heating... on Fan... off Heating/cooling... off 46

TopVent commercial CUM Technical data 3 Technical data 3.1 Unit type reference Unit type Recirculation unit with heating/cooling section Unit size 9 TC - 9 - D / ST. D1 / R. Heating/cooling section with coil type D Air outlet Air-Injector E Installation Kit for roof installation Further options See section K 'Options' Table E2: Unit type reference 3.2 Application limits Maximum operating pressure 800 kpa Maximum heating medium temperature 1) 90 C Maximum supply air temperature 60 C Maximum extract air temperature 50 C Maximum amount of condensate 150 kg/h Minimum air flow rate 5000 m³/h The units cannot be used in: Areas where there is danger of explosion Places with a corrosive or aggressive environment Damp locations Spaces with a large amount of dust 1) Design for higher temperatures on request Table E3: Application limits 3.3 Sound levels Unit size CUM-9 Sound pressure level (at a distance of 5 m) 1) db(a) 59 Total sound power level db(a) 81 Octave sound power level 63 Hz db 49 125 Hz db 67 250 Hz db 70 500 Hz db 73 1000 Hz db 75 2000 Hz db 75 4000 Hz db 74 8000 Hz db 68 1) with a hemispherical radiation pattern in a low-reflection room Table E4: Sound levels 47

TopVent commercial CUM Technical data 3.4 Flow rate, product parameters Unit size CUM-9 Nominal air flow rate m³/h 9000 Floor area reached m² 946 Static efficiency of the fans % 63.6 Coil type D Effective electric power input kw 1.41 Table E5: TopVent commercial CUM technical data 3.5 Heat output Notice The performance data listed here applies to the most frequent design conditions. Use the selection program 'HK-Select' to calculate the performance data for other design data. You can download 'HK-Select' free of charge on the Internet. Heating medium temperature 80/60 C 60/40 C Unit t room Q H max t S p W m W Q H max t S p W m W Size Type C kw m C kpa l/h kw m C kpa l/h 16 140.7 9.1 64.4 15 6045 85.4 11.3 46.2 5 3670 CUM-9 D 20 130.4 9.5 65.0 13 5600 75.1 12.0 46.8 4 3225 Legend: Type = Type of coil t room = Room air temperature Q = Heat output H max = Maximum mounting height Reference: At room air temperature 16 C: extract air temperature 18 C At room air temperature 20 C: extract air temperature 22 C Table E6: TopVent commercial CUM heat outputs t S = Supply air temperature p W = Water pressure drop m W = Water quantity 3.6 Cooling capacities Cooling medium temperature 6/12 C 8/14 C Unit t room RH room Q sen Q tot t S p W m W m C Q sen Q tot t S p W m W m C Size Type C % kw kw C kpa l/h kg/h kw kw C kpa l/h kg/h CUM-9 D 22 50 37.1 37.1 11.8 13 5307 0.0 32.2 32.2 13.4 10 4613 0.0 70 34.6 56.7 12.6 30 8118 32.5 29.7 45.1 14.2 19 6459 22.6 26 50 46.4 62.4 12.7 36 8941 23.5 41.6 50.9 14.3 24 7282 13.6 70 43.9 87.4 13.5 70 12513 63.9 39.1 75.8 15.1 53 10854 54.0 Legend: Type = Type of coil t room = Room air temperature RH room = Relative humidity of the room air Q sen = Sensible cooling capacity Q tot = Total cooling capacity Reference: At room air temperature 22 C: extract air temperature 24 C At room air temperature 26 C: extract air temperature 28 C Table E7: TopVent commercial CUM cooling capacities t S = Supply air temperature p W = Water pressure drop m W = Water quantity m C = Condensate quantity 48

TopVent commercial CUM Technical data 3.7 Dimensions and weights 1442 1860 1345 80 Rp 2" R 1" 882 Rp 2" 1250 1262 1262 410 550 E 872 1126 1220 1100 1706 1800 Unit size CUM-9/D Return Water content of the coil l 14.2 Weight kg 498 Flow Condensate connection Access panel Table E8: Dimensions and weights 49

TopVent commercial CUM Specification texts 4 Specification texts 4.1 TopVent commercial CUM roof unit for ventilating, heating and cooling supermarkets Housing made of non-corrosive Aluzinc sheet metal, insulated on the inside. Heat exchanger made from copper tubes and aluminium fins, manifolds and distributor made from steel, integrated condensate separator with condensate connection. Fan unit consisting of maintenance-free, direct-drive radial fan with high-efficiency EC motor and free-running rotating wheel made of a high-performance composite material with backwards-curved, 3D contoured blades. Vortex air distributor with a concentric outlet nozzle, 12 adjustable guide vanes, sound attenuation cowl and supply air temperature sensor, incl. actuator for automatic adjustment of the air blow-out direction from vertical to horizontal. Mounted on roof frame of galvanized sheet steel, painted black, with 4 transportation straps. Aluzinc sheet metal roof hood insulated on inside, with an access door. 4.2 Options Flat filter box with 4 pleated class G4 cell filters (according to DIN EN 779) with a differential pressure control device for filter monitoring Standard paint finish in Hoval red (RAL 3000) Paint finish as desired in RAL colour No. Hydraulic assembly diverting system Prefabricated assembly for hydraulic diverting system, consisting of mixing valve, regulating valve, ball valve, automatic air vent and screw connections for connection to the unit and to the distributor circuit. Mixing valves Mixing valve with modulating rotary actuator, sized for the coil(s) in the unit. Condensate pump Consisting of a centrifugal pump, a drip tray, max. delivery rate of 150 l/h with a delivery head of 3 m Electrical connection with TopTronic C design Control box fitted at the side of the housing as part of the TopTronic C control system. The following components are installed: Unit controller Main switch Fuse for the electronics Transformer Connection terminals The components of the unit are fully wired up. 4.3 TopTronic C control systems Freely configurable, zone-based control system ex-works for operation of decentralised Hoval indoor climate systems with optimised use of energy, suitable for demand-driven control of overall systems comprising up to 64 control zones each with up to 15 supply and extract air handling units or supply air units and 10 recirculation units. System structure Unit controller: installed in the particular indoor climate unit Zone bus (Modbus): as serial connection of all unit controllers in one control zone with the zone controller; with robust bus protocol via shielded and twisted-pair bus line (bus cables provided by the client) Zone control panel with: System operator terminal Fresh air temperature sensor Zone controllers and room air temperature sensors All components for the electrical power supply and protection System bus (Ethernet): for connecting all zone controllers to one another and to the system operator terminal as well as, if appropriate, the building management system (bus cables provided by the client) Operation TopTronic C-ST as system operator terminal: touch panel for visualisation and control by web browser via HTML interface TopTronic C-ZT as zone operator terminal: for simple on-site operation of a control zone (optional) Manual operating selector switch (optional) Manual operating selector button (optional) Operating of the units via building management system via standardised interfaces (optional) Control functions Control of the supply air temperature using room supply air cascade control via sequential control of the energy recovery and the coils (depending on the unit type) Demand-driven control of the supply air and exhaust air volumetric flows with minimum and maximum limit depending on the room temperature or, optionally, the room air quality (for supply and extract air handling units) Control of the unit including the air distribution according to the specifications of the zone controller 50

TopVent commercial CUM Specification texts Alarms, protection Central alarm management with registration of all alarms (timestamp, priority, status) in an alarm list and alarm memory of the last 50 alarms; forwarding via e-mail can be set in the parameters. If there is a failure of communication, bus stations, sensor systems or supply media, each part of the system transitions to a protection mode which safeguards operation. Frost protection control of the units with constrained control of protection functions to prevent coil icing (for supply air units as well as supply and extract air handling units) A maintenance mode implemented in the control algorithm for testing all physical data points and alarms guarantees high reliability. Options for the control system Indoor climate unit Energy monitoring (for supply and extract air handling units) Door contact (for recirculation units in the 2-pipe system) Pump control for mixing or injection system Return temperature sensor Zone control panel Alarm lamp Socket Additional room air temperature sensor Combination sensor room air quality, temperature and humidity External sensor values External set values Load shedding input Operating selector switch on terminal Operating selector button on terminal Power supply and safety relay Control of distributor pump(s), incl. power supply 4.4 System control for TopVent plants System control for operation of decentralised Hoval indoor climate systems with optimised use of energy, suitable for demand-driven control of TopVent plants comprising 1 control zone with up to 6 supply air units and 10 recirculation units (power supply for the TopVent units provided by the client). System structure Unit controller: installed in the particular indoor climate unit Zone bus (Modbus): as serial connection of all unit controllers with the zone controller; with robust bus protocol via shielded and twisted-pair bus line (bus cables provided by the client) Zone control panel with: Zone controller with operating panel C-SCT, making it simple to operate and monitor the system Fresh air temperature sensor Room temperature sensor External connections: Enable heating Trouble input heating Enable cooling Trouble input cooling Collective trouble indicator Forced off Cooling lock switch Changeover valves heating/cooling Additional room temperature sensor (max. 1) Operating selector switch on terminal (analogue) Operating selector button on terminal (analogue) External setpoint fresh air ratio Control functions Control of the supply air temperature using room supply air cascade control Control of the unit including the air distribution according to the specifications of the zone controller Alarms, protection Central alarm management with registration of all alarms (timestamp, priority, status) in an alarm list and alarm memory of the last 50 alarms. If there is a failure of communication, bus stations, sensor systems or supply media, each part of the system transitions to a protection mode which safeguards operation. Frost protection control of the units with constrained control of protection functions to prevent coil icing (for supply air units) A maintenance mode implemented in the control algorithm for testing all physical data points and alarms guarantees high reliability. Options for the control system Indoor climate unit Door contact (for recirculation units in the 2-pipe system) Pump control for mixing or injection system Return temperature sensor Zone control panel Additional room temperature sensor Bus interface for operating of the units via building management system E 51

TopVent MH Content TopVent MH Supply air unit for ventilating and heating high spaces F 1 Use 54 2 Construction and operation 54 3 Technical data 58 4 Specification texts 61 53

TopVent MH Use 1 Use 2 Construction and operation 1.1 Intended use TopVent MH units are supply air units intended for ventilating and heating high spaces with a variable fresh air supply. They have the following functions: Heating (with connection to a hot water supply) Fresh air supply Mixed air operation Recirculation operation Air distribution with Air-Injector Air filtration Also included under intended use are compliance with the installation, commissioning, operating and maintenance provisions (operating instructions). Any use beyond this is considered improper use. The manufacturer can accept no liability for damage resulting from improper use. 1.2 User group The units are only allowed to be installed, operated and maintained by authorised and instructed personnel who are well acquainted with the units and are informed about possible dangers. The operating instructions are for operating engineers and technicians as well as specialists in building, heating and ventilation technology. The TopVent MH is used for ventilating and heating in fresh air, mixed air or recirculation operation; it was developed specially for use in high halls. The unit is installed under the ceiling and connected to a fresh air duct. Depending on the damper position, it takes in fresh air and/or room air, filters it, heats it by means of the heating coil and injects it back into the room via the Air-Injector. With its high performance and efficient air distribution, the TopVent MH covers a large area. Therefore, compared to other systems, fewer units are needed to achieve the required conditions. 2 unit sizes, variable fans, different coil types and a whole string of accessories provide a tailored solution for any hall. 2.1 Unit construction The TopVent MH consists of the following components: Mixed air box (with fresh air and recirculation air dampers linked to move in opposite directions) Filter box (with two class G4 bag filters) Heating section (with fan and heating coil) Automatically adjustable vortex air distributor Air-Injector The components are bolted together, but can be dismantled separately again. 2.2 Air distribution with the Air-Injector The patented air distributor called the Air-Injector is the core element. The air discharge angle is set by means of the infinitely variable guide vanes. It depends on the air flow rate, the mounting height and the temperature difference between the supply air and room air. The air is therefore blown into the room vertically downward, conically or horizontally. This ensures that: with each TopVent unit, a large area of the hall can be reached, the occupied area is draught-free, the temperature stratification in the room is reduced, thus saving energy. 54

TopVent MH Use Housing: Made of corrosion-resistant Aluzinc sheet metal; insulated on the inside Frost controller Filter box: Easily accessible behind the sliding door, with 2 class G4 bag filters and a differential pressure control device for filter monitoring Fresh air duct with canvas connection (not included in Hoval delivery specifications) Mixed air box: With fresh air and recirculation dampers and actuator with spring return linked to move in opposite directions Fan: Quiet axial fan with high-efficiency EC motor Unit control box as part of the TopTronic C control system Heat exchanger: Heating coil consisting of copper tubes with aluminium fins Air-Injector: Patented, automatically adjustable vortex air distributor for draught-free air distribution over a large area (incl. actuator) F Fig. F1: TopVent MH structure Mixed air box Filter box Heating section Air-Injector Fig. F2: TopVent MH components 55

TopVent MH Construction and operation 2.3 Operating modes The TopVent MH operates in the following modes: Recirculation Recirculation speed 1 Supply air speed 2 Supply air speed 1 Standby The TopTronic C control system regulates these operating modes automatically for each control zone in accordance with the specifications in the calendar. The following points also apply: The operating mode of a control zone can be switched over manually. Each TopVent MH unit can operate individually in a local operating mode: Off, Recirculation, Recirculation speed 2, Recirculation speed 1, Supply air speed 2, Supply air speed 1. You will find a detailed description of the TopTronic C control system in section M 'Control systems' of this handbook. Code Operating mode Description SA2 Supply air speed 2 The unit blows fresh air into the room. The fresh air ratio is adjustable. The heating is regulated according to the heat demand. The room temperature set value day is active. The unit operates at speed 2 (high air flow rate). Fan... speed 2 Fresh air damper... 10 % open 1) Heating... on 2) 1) percentage is adjustable 2) for heat demand SA1 Supply air speed 1 The same as SA2, but the unit operates only at speed 1 (low air flow rate) Fan... speed 1 Fresh air damper... 10 % open 1) Heating... on 2) REC Recirculation On/off-operation: if heating is required, the unit draws in room air, heats it and returns the warm air back into the room. The room temperature set value day is active. 1) percentage is adjustable 2) for heat demand Fan... speed 1 / 2 1) Fresh air damper... closed Heating... on 1) 1) for heat demand REC1 Recirculation speed 1 The same as REC, but the unit operates only at speed 1 (low air flow rate) Fan... speed 1 1) Fresh air damper... closed Heating... on 1) ST CPR OPR Standby The unit is normally switched off. The following functions remain active: Cooling protection: If the room temperature drops below the set value for cooling protection, the unit heats up the room in recirculation operation. Night cooling: If the room temperature exceeds the set value for night cooling and the current fresh air temperature permits it, the unit blows cool fresh air into the room and extracts warmer room air. 1) for heat demand Fan... speed 2 Fresh air damper... closed Heating... on Fan... speed 2 Fresh air damper... open Heating... off 56

TopVent MH Construction and operation Code Operating mode Description Emergency operation Emergency operation can be activated and set as required by the Hoval service technician. For example, it is suitable for heating the hall before taking the control system into operation or if the controller fails during the heating period. L_OFF Off (local operating mode) The unit is switched off. Frost protection for the unit remains active. Table F1: TopVent MH operating modes Fan... speed 2 1) Fresh air damper... closed 1) Heating... on 1) 1) adjustable by the Hoval service technician Fan... off Fresh air damper... closed Heating... off F 57

TopVent MH Technical data 3 Technical data 3.1 Unit type reference MH - 6 A - / ST. D1 / Unit type Supply air unit with heating section Unit size 6 or 9 Heating section with coil type A, B or C Air outlet Air-Injector Further options See section K 'Options' Table F2: Unit type reference 3.2 Application limits Maximum operating pressure 800 kpa Maximum heating medium temperature 1) 90 C Maximum supply air temperature 60 C Maximum extract air temperature 50 C The units cannot be used in: Areas where there is danger of explosion Places with a corrosive or aggressive environment Damp locations Spaces with a large amount of dust 1) Design for higher temperatures on request Table F3: Application limits 3.3 Flow rate, product parameters Unit size MH-6 MH-9 Nominal air flow rate m³/h 6000 9000 Floor area reached m² 537 946 Static efficiency of the fans % 48.5 43.0 Coil type A B C A B C Effective electric power input kw 0.67 0.75 1.02 1.12 1.23 1.55 Table F4: TopVent MH technical data 58

TopVent MH Technical data 3.4 Sound levels Unit size MH-6 MH-9 Coil type A B C A B C Sound pressure level (at a distance of 5 m) 1) db(a) 53 55 58 55 56 60 Total sound power level db(a) 75 77 80 77 78 82 Octave sound power level 63 Hz db 53 55 57 59 59 62 125 Hz db 57 59 61 62 63 66 250 Hz db 62 64 67 66 67 71 500 Hz db 68 69 72 69 71 74 1000 Hz db 72 73 76 73 74 77 2000 Hz db 68 70 73 72 73 76 4000 Hz db 62 63 67 67 68 71 8000 Hz db 54 56 59 60 61 64 1) with a hemispherical radiation pattern in a low-reflection room Table F5: Sound levels 3.5 Heat output F Notice The performance data listed here applies to the most frequent design conditions. Use the selection program 'HK-Select' to calculate the performance data for other design data. You can download 'HK-Select' free of charge on the Internet. Heating medium temperature 80/60 C 60/40 C Unit t F Q H max t S p W m W Q H max t S p W m W Size Type C kw m C kpa l/h kw m C kpa l/h A -5 33.1 14.4 33.9 7 1424 19.1 18.8 27.0 2 820-15 33.8 14.7 33.2 8 1451 19.7 19.5 26.3 3 848-5 47.5 12.1 41.0 13 2040 27.4 15.7 31.1 4 1177 MH-6 B -15 48.4 1.2 40.5 14 2079 28.3 16.1 30.5 5 1216 C -5 76.8 9.7 55.5 18 3297 45.7 12.3 40.1 7 1965-15 78.2 9.7 55.2 19 3358 47.2 12.4 39.9 7 2026 A -5 56.1 14.4 36.0 8 2409 32.3 18.8 28.2 3 1387-15 57.1 14.6 35.4 8 2455 33.4 19.4 27.5 3 1433-5 71.9 12.8 41.2 12 3090 41.3 16.7 31.1 4 1775 MH-9 B -15 73.3 12.9 40.7 13 3149 42.7 17.0 30.6 4 1834 C -5 119.0 10.1 56.8 18 5113 71.0 12.9 40.9 7 3050-15 121.2 10.1 56.5 19 5208 73.2 12.9 40.7 7 3145 Legend: Type = Type of coil t F = Fresh air temperature Q = Heat output H max = Maximum mounting height t S = Supply air temperature p W = Water pressure drop m W = Water quantity Reference: Room air 18 C, extract air 20 C / 20 % rel. humidity Fresh air ratio 10% Table F6: TopVent MH heat outputs 59

TopVent MH Technical data 3.6 Dimensions and weights 2 5 O x P 2 5 100 E C G H T B F L 4 x M10 R J D I A K Unit size MH-6 MH-9 Return A mm 900 1100 B mm 355 360 C mm 400 400 D mm 500 630 E mm 415 480 F mm 758 882 G mm 1077 1127 H mm 999 1049 I mm 760 935 J " Rp 1¼ (internal) Rp 1½ (internal) K mm 1089 1289 L mm 594 846 O x P mm 420 x 850 500 x 1050 R mm 1660 1810 T mm 795 800 Water content of Type A B C A B C the coil l 3.1 3.1 6.2 4.7 4.7 9.4 Weight kg 150 150 153 213 213 217 Flow Table F7: Dimensions and weights 60

TopVent MH Specification texts 4 Specification texts 4.1 TopVent MH supply air unit for ventilating and heating high spaces Housing made of non-corrosive Aluzinc sheet metal, insulated on the inside, standard equipment with 4 riveting nuts size M10 with hexagon bolts and washers for ceiling installation. Heat exchanger made from copper tubes and aluminium fins, manifolds and distributor made of steel, incl. pre-assembled frost controller. Fan unit consisting of maintenance-free, direct-drive axial fan with high-efficiency EC motor and balanced rotating wheel with aerodynamically shaped blades and serrated trailing edge. Filter box with 2 bag filters class G4, including filter monitoring with a differential pressure control device. Non-corrosive Aluzinc sheet metal mixed air box with fresh air damper and recirculation damper linked to move in opposite directions; includes actuator with spring return. Vortex air distributor with a concentric outlet nozzle, 12 adjustable guide vanes, sound attenuation cowl and supply air temperature sensor, incl. actuator for automatic adjustment of the air blow-out direction from vertical to horizontal. 4.2 Options Suspension set for ceiling installation of the unit consisting of 4 pairs U-profiles made of aluzinc sheet steel, height-adjustable to 1300 mm. Paint according to unit. Standard paint finish in Hoval red (RAL 3000) Paint finish as desired in RAL colour No. Acoustic cowl consisting of an absorber hood of large volume, insertion attenuation 4 db(a) Hydraulic assembly diverting system Prefabricated assembly for hydraulic diverting system, consisting of mixing valve, regulating valve, ball valve, automatic air vent and screw connections for connection to the unit and to the distributor circuit. Mixing valves Mixing valve with modulating rotary actuator, sized for the coil(s) in the unit. Electrical connection with TopTronic C design Control box fitted at the side of the housing as part of the TopTronic C control system. The following components are installed: Unit controller Main switch Fuse for the electronics Transformer Connection terminals The components of the unit are fully wired up. 4.3 TopTronic C control systems Freely configurable, zone-based control system ex-works for operation of decentralised Hoval indoor climate systems with optimised use of energy, suitable for demand-driven control of overall systems comprising up to 64 control zones each with up to 15 supply and extract air handling units or supply air units and 10 recirculation units. System structure Unit controller: installed in the particular indoor climate unit Zone bus (Modbus): as serial connection of all unit controllers in one control zone with the zone controller; with robust bus protocol via shielded and twisted-pair bus line (bus cables provided by the client) Zone control panel with: System operator terminal Fresh air temperature sensor Zone controllers and room air temperature sensors All components for the electrical power supply and protection System bus (Ethernet): for connecting all zone controllers to one another and to the system operator terminal as well as, if appropriate, the building management system (bus cables provided by the client) Operation TopTronic C-ST as system operator terminal: touch panel for visualisation and control by web browser via HTML interface TopTronic C-ZT as zone operator terminal: for simple on-site operation of a control zone (optional) Manual operating selector switch (optional) Manual operating selector button (optional) Operating of the units via building management system via standardised interfaces (optional) Control functions Control of the supply air temperature using room supply air cascade control via sequential control of the energy recovery and the coils (depending on the unit type) Demand-driven control of the supply air and exhaust air volumetric flows with minimum and maximum limit F 61

TopVent MH Specification texts depending on the room temperature or, optionally, the room air quality (for supply and extract air handling units) Control of the unit including the air distribution according to the specifications of the zone controller Alarms, protection Central alarm management with registration of all alarms (timestamp, priority, status) in an alarm list and alarm memory of the last 50 alarms; forwarding via e-mail can be set in the parameters. If there is a failure of communication, bus stations, sensor systems or supply media, each part of the system transitions to a protection mode which safeguards operation. Frost protection control of the units with constrained control of protection functions to prevent coil icing (for supply air units as well as supply and extract air handling units) A maintenance mode implemented in the control algorithm for testing all physical data points and alarms guarantees high reliability. Options for the control system Indoor climate unit Energy monitoring (for supply and extract air handling units) Door contact (for recirculation units in the 2-pipe system) Pump control for mixing or injection system Return temperature sensor Zone control panel Alarm lamp Socket Additional room air temperature sensor Combination sensor room air quality, temperature and humidity External sensor values External set values Load shedding input Operating selector switch on terminal Operating selector button on terminal Power supply and safety relay Control of distributor pump(s), incl. power supply 4.4 System control for TopVent plants System control for operation of decentralised Hoval indoor climate systems with optimised use of energy, suitable for demand-driven control of TopVent plants comprising 1 control zone with up to 6 supply air units and 10 recirculation units (power supply for the TopVent units provided by the client). System structure Unit controller: installed in the particular indoor climate unit Zone bus (Modbus): as serial connection of all unit controllers with the zone controller; with robust bus protocol via shielded and twisted-pair bus line (bus cables provided by the client) Zone control panel with: Zone controller with operating panel C-SCT, making it simple to operate and monitor the system Fresh air temperature sensor Room temperature sensor External connections: Enable heating Trouble input heating Enable cooling Trouble input cooling Collective trouble indicator Forced off Cooling lock switch Changeover valves heating/cooling Additional room temperature sensor (max. 1) Operating selector switch on terminal (analogue) Operating selector button on terminal (analogue) External setpoint fresh air ratio Control functions Control of the supply air temperature using room supply air cascade control Control of the unit including the air distribution according to the specifications of the zone controller Alarms, protection Central alarm management with registration of all alarms (timestamp, priority, status) in an alarm list and alarm memory of the last 50 alarms. If there is a failure of communication, bus stations, sensor systems or supply media, each part of the system transitions to a protection mode which safeguards operation. Frost protection control of the units with constrained control of protection functions to prevent coil icing (for supply air units) A maintenance mode implemented in the control algorithm for testing all physical data points and alarms guarantees high reliability. Options for the control system Indoor climate unit Door contact (for recirculation units in the 2-pipe system) Pump control for mixing or injection system Return temperature sensor Zone control panel Additional room temperature sensor Bus interface for operating of the units via building management system 62

TopVent MK Content TopVent MK Supply air unit for ventilating, heating and cooling high spaces G H 1 Use 64 2 Construction and operation 64 I 3 Technical data 68 4 Specification texts 72 J K L M N 63

TopVent MK Use 1 Use 2 Construction and operation 1.1 Intended use TopVent MK units are supply air units intended for ventilating, heating and cooling high spaces with a variable fresh air supply. They have the following functions: Heating (with connection to a hot water supply) Cooling (with connection to a water chiller) Fresh air supply Mixed air operation Recirculation operation Air distribution with Air-Injector Air filtration Also included under intended use are compliance with the installation, commissioning, operating and maintenance provisions (operating instructions). Any use beyond this is considered improper use. The manufacturer can accept no liability for damage resulting from improper use. 1.2 User group The units are only allowed to be installed, operated and maintained by authorised and instructed personnel who are well acquainted with the units and are informed about possible dangers. The operating instructions are for operating engineers and technicians as well as specialists in building, heating and ventilation technology. The TopVent MK is used for ventilating, heating and cooling in fresh air, mixed air or recirculation operation; it was developed specially for use in high halls. The unit is installed under the ceiling and connected to a fresh air duct. Depending on the damper position, it takes in fresh air and/or room air, filters it, heats or cools it and injects it back into the room via the Air-Injector. With its high performance and efficient air distribution, the TopVent MH covers a large area. Therefore, compared to other systems, fewer units are needed to achieve the required conditions. 2 unit sizes, variable fans, different coil types and a whole string of accessories provide a tailored solution for any hall. 2.1 Unit construction The TopVent MK consists of the following components: Mixed air box (with fresh air and recirculation air dampers linked to move in opposite directions) Filter box (with 2 class G4 bag filters) Heating /cooling section (with fan, heating/cooling coil and integrated condensate separator for the condensate generated) Automatically adjustable vortex air distributor Air-Injector The unit is insulated to avoid condensation on the external surfaces. The components are bolted together, but can be dismantled separately again. 2.2 Air distribution with the Air-Injector The patented air distributor called the Air-Injector is the core element. The air discharge angle is set by means of the infinitely variable guide vanes. It depends on the air flow rate, the mounting height and the temperature difference between the supply air and room air. The air is therefore blown into the room vertically downward, conically or horizontally. This ensures that: with each TopVent unit, a large area of the hall can be reached, the occupied area is draught-free, the temperature stratification in the room is reduced, thus saving energy. 64

TopVent MK Use Housing: Made of corrosion-resistant Aluzinc sheet metal; insulated on the inside Frost controller Filter box: Easily accessible behind the sliding door, with 2 class G4 bag filters and a differential pressure control device for filter monitoring Fresh air duct with canvas connection (not included in Hoval delivery specifications) Mixed air box: With fresh air and recirculation dampers and actuator with spring return linked to move in opposite directions Heat exchanger: Heating/cooling coil consisting of copper tubes with aluminium fins Unit control box as part of the TopTronic C control system Condensate separator: With condensate connection Fan: Quiet radial fan with high-efficiency EC motor Air-Injector: Patented, automatically adjustable vortex air distributor for draught-free air distribution over a large area (incl. actuator) G H I Fig. G1: TopVent MK structure J Mixed air box Filter box Heating/cooling section Air-Injector K L M N Fig. G2: TopVent MK components 65

TopVent MK Construction and operation 2.3 Operating modes The TopVent MK operates in the following modes: Recirculation Recirculation speed 1 Supply air speed 2 Supply air speed 1 Standby The TopTronic C control system regulates these operating modes automatically for each control zone in accordance with the specifications in the calendar. The following points also apply: The operating mode of a control zone can be switched over manually. Each TopVent MK unit can operate individually in a local operating mode: Off, Recirculation, Recirculation speed 2, Recirculation speed 1, Supply air speed 2, Supply air speed 1. You will find a detailed description of the TopTronic C control system in section M 'Control systems' of this handbook. Code Operating mode Description SA2 Supply air speed 2 The unit blows fresh air into the room. The fresh air ratio is adjustable. Heating/cooling is controlled according to the heat/cool demand. The room temperature set value day is active. The unit operates at speed 2 (high air flow rate). Fan... speed 2 Fresh air damper... 10 % open 1) Heating/cooling... on 2) 1) percentage is adjustable 2) during heat or cool demand SA1 Supply air speed 1 The same as SA2, but the unit operates only at speed 1 (low air flow rate) Fan... speed 1 Fresh air damper... 10 % open 1) Heating/cooling... on 2) REC Recirculation On/Off operation: during heat or cool demand, the unit draws in room air, heats or cools it and blows it back into the room. The room temperature set value day is active. 1) percentage is adjustable 2) during heat or cool demand Fan... speed 1 / 2 1) Fresh air damper... closed Heating/cooling... on 1) 1) during heat or cool demand REC1 Recirculation speed 1 The same as REC, but the unit operates only at speed 1 (low air flow rate) Fan... speed 1 1) Fresh air damper... closed Heating/cooling... on 1) ST CPR OPR NCS Standby The unit is normally switched off. The following functions remain active: Cooling protection: If the room temperature drops below the set value for cooling protection, the unit heats up the room in recirculation operation. Overheating protection: If the room temperature rises above the set value for overheating protection, the unit cools down the room in recirculation operation. Night cooling: If the room temperature exceeds the set value for night cooling and the current fresh air temperature permits it, the unit blows cool fresh air into the room and extracts warmer room air. 1) during heat or cool demand Fan... speed 2 Fresh air damper... closed Heating... on Fan... speed 2 Fresh air damper... closed Cooling... on Fan... speed 2 Fresh air damper... open Heating/cooling... off 66

TopVent MK Construction and operation Emergency operation Emergency operation can be activated and set as required by the Hoval service technician. For example, it is suitable for heating the hall before taking the control system into operation or if the controller fails during the heating period. L_OFF Off (local operating mode) The unit is switched off. Frost protection for the unit remains active. Fan... speed 2 1) Fresh air damper... closed 1) Heating... on 1) 1) adjustable by the Hoval service technician Fan... off Fresh air damper... closed Heating/cooling... off Table G1: TopVent MK operating modes G H I J K L M N 67

TopVent MK Technical data 3 Technical data 3.1 Unit type reference MC - 6 - C / ST. D1 / Unit type Supply air unit with heating/cooling section Unit size 6 or 9 Heating/cooling section with coil type C or D Air outlet Air-Injector Further options See section K 'Options' Table G2: Unit type reference 3.2 Application limits Maximum operating pressure 800 kpa Maximum heating medium temperature 1) 90 C Maximum supply air temperature 60 C Maximum extract air temperature 50 C Maximum amount of condensate MK-6 90 kg/h MK-9 150 kg/h Minimum air flow rate MK-6 3100 m³/h MK-9 5000 m³/h The units cannot be used in: Areas where there is danger of explosion Places with a corrosive or aggressive environment Damp locations Spaces with a large amount of dust 1) Design for higher temperatures on request 3.3 Sound levels Unit size MK-6 MK-9 Sound pressure level (at a distance of 5 m) 1) db(a) 52 59 Total sound power level db(a) 74 81 Octave sound power level 63 Hz db 42 49 125 Hz db 60 67 250 Hz db 63 70 500 Hz db 66 73 1000 Hz db 68 75 2000 Hz db 68 75 4000 Hz db 67 74 8000 Hz db 62 68 1) with a hemispherical radiation pattern in a low-reflection room Table G3: Application limits Table G4: Sound levels 68

TopVent MK Technical data 3.4 Flow rate, product parameters Unit size MK-6 MK-9 Nominal air flow rate m³/h 6000 9000 Floor area reached m² 537 946 Static efficiency of the fans % 63.6 63.6 Coil type C C D Effective electric power input kw 0.69 1.34 1.46 Table G5: TopVent MK technical data 3.5 Heat output Notice The performance data listed here applies to the most frequent design conditions. Use the selection program 'HK-Select' to calculate the performance data for other design data. You can download 'HK-Select' free of charge on the Internet. Heating medium temperature 80/60 C 60/40 C Unit t F Q H max t S p W m W Q H max t S p W m W Size Type C kw m C kpa l/h kw m C kpa l/h -5 76.8 9.7 55.5 18 3297 45.7 12.3 40.1 7 1965 MK-6 C -15 78.2 9.7 55.2 19 3358 47.2 12.4 39.9 7 2026-5 119.0 10.1 56.8 18 5113 71.0 12.9 40.9 7 3050 C -15 121.2 10.1 56.5 19 5208 73.2 12.9 40.7 7 3145 MK-9-5 142.0 9.3 64.4 15 6101 86.7 11.7 46.1 6 3725 D -15 144.6 9.4 64.2 15 6212 89.3 11.7 46.0 6 3837 Legend: Type = Type of coil t F = Fresh air temperature Q = Heat output H max = Maximum mounting height Reference: Table G6: TopVent MH heat outputs Room air 18 C, extract air 20 C / 20 % rel. humidity Fresh air ratio 10% t S = Supply air temperature p W = Water pressure drop m W = Water quantity G H I J K L M N 69

TopVent MK Technical data 3.6 Cooling capacities Cooling medium temperature 6/12 C 8/14 C Unit t F RH F Q sen Q tot t S p W m W m C Q sen Q tot t S p W m W m C Size Type C % kw kw C kpa l/h kg/h kw kw C kpa l/h kg/h MK-6 MK-9 C C D 28 32 28 32 28 32 Legend: Type = Type of coil t F = Fresh air temperature RH F = Relative humidity of the fresh air Q sen = Sensible cooling capacity Q tot = Total cooling capacity 40 21.0 21.0 14.0 16 3000 0.0 18.5 18.5 15.2 13 2649 0.0 60 20.7 20.7 14.2 16 2961 0.0 18.2 18.2 15.4 12 2609 0.0 40 25.7 32.3 15.7 39 4630 9.7 23.3 27.8 16.9 25 3734 4.1 60 25.4 34.1 15.8 43 4884 12.7 23.0 26.1 17.0 29 3988 7.1 40 32.2 32.2 13.8 16 4614 0.0 28.4 28.4 15.0 12 4064 0.0 60 31.8 31.8 13.9 16 4554 0.0 28.0 28.0 15.2 12 4004 0.0 40 39.7 51.9 15.3 41 7432 18.0 35.8 35.8 16.6 20 5131 0.0 60 39.3 54.7 15.4 46 7829 22.7 35.4 35.8 16.7 22 5459 4.0 40 38.1 38.1 11.8 13 5451 0.0 33.2 33.2 13.4 10 4756 0.0 60 37.7 37.8 12.0 13 5409 0.1 32.9 32.9 13.6 10 4706 0.0 40 47.4 64.8 12.7 39 9285 25.6 42.6 56.7 14.3 26 7626 15.7 60 47.1 68.3 12.9 43 9785 31.2 42.2 53.3 14.5 30 8126 21.3 t S = Supply air temperature p W = Water pressure drop m W = Water quantity m C = Condensate quantity Reference: At fresh air temperature 28 C: room air 22 C / 50% RH, extract air 24 C At fresh air temperature 32 C: room air 26 C / 50% RH, extract air 28 C Fresh air ratio 10% Table G7: TopVent commercial CAU cooling capacities 70

TopVent MK Technical data 3.7 Dimensions and weights 2 5 O x P 2 5 100 C K B J F E 8 0 M S T 4 x M10 L R G H 4 6 D U I A G Unit size MK-6/C MK-9/C MK-9/D Return A mm 900 1100 1100 B mm 355 360 360 C mm 400 400 400 D mm 500 630 630 E mm 579 615 615 F mm 758 882 882 G mm 910 931 940 H mm 832 853 845 I mm 760 935 935 J " Rp 1¼ (internal) Rp 1½ (internal) Rp 2 (internal) K 1276 1318 1318 L mm 594 846 846 M " R 1 (external) R 1 (external) R 1 (external) O x P mm 420 x 850 500 x 1050 500 x 1050 R mm 2099 2190 2190 S mm 275 245 245 T mm 795 800 800 U mm 1020 1220 1220 Water content of l 6.2 9.4 14.2 the coil Weight kg 251 323 348 Flow Condensate connection Access panel H I J K L M N Table G8: Dimensions and weights 71

TopVent MK Specification texts 4 Specification texts 4.1 TopVent MK supply air unit for ventilating, heating and cooling high spaces Housing made of non-corrosive Aluzinc sheet metal, insulated on the inside, standard equipment with 4 riveting nuts size M10 with hexagon bolts and washers for ceiling installation. Heat exchanger made from copper tubes and aluminium fins, manifolds and distributor made of steel, incl. pre-assembled frost controller and an integrated condensate separator with a condensate connection. Fan unit consisting of maintenance-free, direct-drive radial fan with high-efficiency EC motor and free-running rotating wheel made of a high-performance composite material with backwards-curved, 3D contoured blades. Filter box with 2 bag filters class G4, including filter monitoring with a differential pressure control device. Non-corrosive Aluzinc sheet metal mixed air box with fresh air damper and recirculation damper linked to move in opposite directions; includes actuator with spring return. Vortex air distributor with a concentric outlet nozzle, 12 adjustable guide vanes, sound attenuation cowl and supply air temperature sensor, incl. actuator for automatic adjustment of the air blow-out direction from vertical to horizontal. 4.2 Options Suspension set for ceiling installation of the unit consisting of 4 pairs U-profiles made of aluzinc sheet steel, height-adjustable to 1300 mm. Paint according to unit. Standard paint finish in Hoval red (RAL 3000) Paint finish as desired in RAL colour No. Hydraulic assembly diverting system Prefabricated assembly for hydraulic diverting system, consisting of mixing valve, regulating valve, ball valve, automatic air vent and screw connections for connection to the unit and to the distributor circuit. Mixing valves Mixing valve with modulating rotary actuator, sized for the coil(s) in the unit. Condensate pump Consisting of a centrifugal pump, a drip tray, max. delivery rate of 150 l/h with a delivery head of 3 m Electrical connection with TopTronic C design Control box fitted at the side of the housing as part of the TopTronic C control system. The following components are installed: Unit controller Main switch Fuse for the electronics Transformer Connection terminals The components of the unit are fully wired up. 4.3 TopTronic C control systems Freely configurable, zone-based control system ex-works for operation of decentralised Hoval indoor climate systems with optimised use of energy, suitable for demand-driven control of overall systems comprising up to 64 control zones each with up to 15 supply and extract air handling units or supply air units and 10 recirculation units. System structure Unit controller: installed in the particular indoor climate unit Zone bus (Modbus): as serial connection of all unit controllers in one control zone with the zone controller; with robust bus protocol via shielded and twisted-pair bus line (bus cables provided by the client) Zone control panel with: System operator terminal Fresh air temperature sensor Zone controllers and room air temperature sensors All components for the electrical power supply and protection System bus (Ethernet): for connecting all zone controllers to one another and to the system operator terminal as well as, if appropriate, the building management system (bus cables provided by the client) Operation TopTronic C-ST as system operator terminal: touch panel for visualisation and control by web browser via HTML interface TopTronic C-ZT as zone operator terminal: for simple on-site operation of a control zone (optional) Manual operating selector switch (optional) Manual operating selector button (optional) Operating of the units via building management system via standardised interfaces (optional) Control functions Control of the supply air temperature using room supply air cascade control via sequential control of the energy recovery and the coils (depending on the unit type) Demand-driven control of the supply air and exhaust air volumetric flows with minimum and maximum limit 72

TopVent MK Specification texts depending on the room temperature or, optionally, the room air quality (for supply and extract air handling units) Control of the unit including the air distribution according to the specifications of the zone controller Alarms, protection Central alarm management with registration of all alarms (timestamp, priority, status) in an alarm list and alarm memory of the last 50 alarms; forwarding via e-mail can be set in the parameters. If there is a failure of communication, bus stations, sensor systems or supply media, each part of the system transitions to a protection mode which safeguards operation. Frost protection control of the units with constrained control of protection functions to prevent coil icing (for supply air units as well as supply and extract air handling units) A maintenance mode implemented in the control algorithm for testing all physical data points and alarms guarantees high reliability. Options for the control system Indoor climate unit Energy monitoring (for supply and extract air handling units) Door contact (for recirculation units in the 2-pipe system) Pump control for mixing or injection system Return temperature sensor Zone control panel Alarm lamp Socket Additional room air temperature sensor Combination sensor room air quality, temperature and humidity External sensor values External set values Load shedding input Operating selector switch on terminal Operating selector button on terminal Power supply and safety relay Control of distributor pump(s), incl. power supply 4.4 System control for TopVent plants System control for operation of decentralised Hoval indoor climate systems with optimised use of energy, suitable for demand-driven control of TopVent plants comprising 1 control zone with up to 6 supply air units and 10 recirculation units (power supply for the TopVent units provided by the client). System structure Unit controller: installed in the particular indoor climate unit Zone bus (Modbus): as serial connection of all unit controllers with the zone controller; with robust bus protocol via shielded and twisted-pair bus line (bus cables provided by the client) Zone control panel with: Zone controller with operating panel C-SCT, making it simple to operate and monitor the system Fresh air temperature sensor Room temperature sensor External connections: Enable heating Trouble input heating Enable cooling Trouble input cooling Collective trouble indicator Forced off Cooling lock switch Changeover valves heating/cooling Additional room temperature sensor (max. 1) Operating selector switch on terminal (analogue) Operating selector button on terminal (analogue) External setpoint fresh air ratio Control functions Control of the supply air temperature using room supply air cascade control Control of the unit including the air distribution according to the specifications of the zone controller Alarms, protection Central alarm management with registration of all alarms (timestamp, priority, status) in an alarm list and alarm memory of the last 50 alarms. If there is a failure of communication, bus stations, sensor systems or supply media, each part of the system transitions to a protection mode which safeguards operation. Frost protection control of the units with constrained control of protection functions to prevent coil icing (for supply air units) A maintenance mode implemented in the control algorithm for testing all physical data points and alarms guarantees high reliability. Options for the control system Indoor climate unit Door contact (for recirculation units in the 2-pipe system) Pump control for mixing or injection system Return temperature sensor Zone control panel Additional room temperature sensor Bus interface for operating of the units via building management system G H I J K L M N 73

TopVent commercial CAU Content TopVent commercial CAU Roof unit for ventilating, heating and cooling supermarkets H 1 Use 76 2 Construction and operation 76 3 Technical data 80 4 Specification texts 84 75

TopVent commercial CAU Use 1 Use 2 Construction and operation 1.1 Intended use TopVent commercial CAU units are supply air units intended for ventilating, heating and cooling large spaces in fresh air, mixed air or recirculation operation. They have the following functions: Heating (with connection to a hot water supply) Cooling (with connection to a water chiller) Fresh air supply Mixed air operation Recirculation operation Air distribution with Air-Injector Air filtration Also included under intended use are compliance with the installation, commissioning, operating and maintenance provisions (operating instructions). Any use beyond this is considered improper use. The manufacturer can accept no liability for damage resulting from improper use. 1.2 User group The units are only allowed to be installed, operated and maintained by authorised and instructed personnel who are well acquainted with the units and are informed about possible dangers. The operating instructions are for operating engineers and technicians as well as specialists in building, heating and ventilation technology. The TopVent commercial CAU unit is used for ventilating, heating and cooling in fresh air, mixed air or recirculation operation; it was developed specially for use in hypermarkets and supermarkets. The unit is installed in the roof with the corresponding roof frame. Depending on the damper position, it takes in fresh air and/or room air, filters it, heats or cools it and injects it back into the room via the Air-Injector. With its high performance and efficient air distribution the TopVent commercial CAU covers a large area. Therefore, compared to other systems, fewer units are needed to achieve the required conditions. As they are installed in the roof, the units do not protrude so far into the room and maintenance work can be performed from the roof without disturbing operations. 2.1 Unit construction TopVent commercial CAU consists of the following components: Kit for roof installation consisting of: Fresh air roof hood (with 2 weather grilles, access door, 2 class G4 filters and a differential pressure control device for filter monitoring) Roof frame Mixed air box (with fresh air and recirculation dampers and actuator linked to move in opposite directions) Heating /cooling section (with fan, heating/cooling coil and integrated condensate separator for the condensate generated) Automatically adjustable vortex air distributor Air-Injector The unit is insulated to avoid condensation on the external surfaces. The components are bolted together, but can be dismantled separately again. 2.2 Air distribution with the Air-Injector The patented air distributor called the Air-Injector is the core element. The air discharge angle is set by means of the infinitely variable guide vanes. It depends on the air flow rate, the mounting height and the temperature difference between the supply air and room air. The air is therefore blown into the room vertically downward, conically or horizontally. This ensures that: with each TopVent unit, a large area of the hall can be reached, the occupied area is draught-free, the temperature stratification in the room is reduced, thus saving energy. 76

TopVent commercial CAU Use Housing: Made of corrosion-resistant Aluzinc sheet metal; insulated on the inside Frost controller Heat exchanger: Heating/cooling coil consisting of copper tubes with aluminium fins Roof frame: Made of sheet steel (insulation on site) Roof hood: Insulated, easy to remove with 4 handles, with 2 weather grilles, 2 G4 filters and a pressure control device for filter monitoring Unit control box as part of the TopTronic C control system, easily accessible behind the access door Mixed air box: With fresh air and recirculation dampers and actuator with spring return linked to move in opposite directions Condensate separator: With condensate connection Fan: Quiet radial fan with high-efficiency EC motor Air-Injector: Patented, automatically adjustable vortex air distributor for draught-free air distribution over a large area (incl. actuator) H Fig. H1: TopVent commercial CAU structure Fresh air roof hood Mixed air box Roof frame Heating/cooling section Air-Injector Fig. H2: TopVent commercial CAU components 77

TopVent commercial CAU Construction and operation 2.3 Operating modes The TopVent commercial CAU operates in the following modes: Recirculation Recirculation speed 1 Supply air speed 2 Supply air speed 1 Standby The TopTronic C control system regulates these operating modes automatically for each control zone in accordance with the specifications in the calendar. The following points also apply: The operating mode of a control zone can be switched over manually. Each TopVent commercial CAU unit can operate individually in a local operating mode: Off, Recirculation, Recirculation speed 2, Recirculation speed 1, Supply air speed 2, Supply air speed 1. You will find a detailed description of the TopTronic C control system in section M 'Control systems' of this handbook. Code Operating mode Description SA2 Supply air speed 2 The unit blows fresh air into the room. The fresh air ratio is adjustable. Heating/cooling is controlled according to the heat/cool demand. The room temperature set value day is active. The unit operates at speed 2 (high air flow rate). Fan... speed 2 Fresh air damper... 10 % open 1) Heating/cooling... on 2) 1) percentage is adjustable 2) during heat or cool demand SA1 Supply air speed 1 The same as SA2, but the unit operates only at speed 1 (low air flow rate) Fan... speed 1 Fresh air damper... 10 % open 1) Heating/cooling... on 2) REC Recirculation On/Off operation: during heat or cool demand, the unit draws in room air, heats or cools it and blows it back into the room. The room temperature set value day is active. 1) percentage is adjustable 2) during heat or cool demand Fan... speed 1 / 2 1) Fresh air damper... closed Heating/cooling... on 1) 1) during heat or cool demand REC1 Recirculation speed 1 The same as REC, but the unit operates only at speed 1 (low air flow rate) Fan... speed 1 1) Fresh air damper... closed Heating/cooling... on 1) ST CPR OPR NCS Standby The unit is normally switched off. The following functions remain active: Cooling protection: If the room temperature drops below the set value for cooling protection, the unit heats up the room in recirculation operation. Overheating protection: If the room temperature rises above the set value for overheating protection, the unit cools down the room in recirculation operation. Night cooling: If the room temperature exceeds the set value for night cooling and the current fresh air temperature permits it, the unit blows cool fresh air into the room and extracts warmer room air. 1) during heat or cool demand Fan... speed 2 Fresh air damper... closed Heating... on Fan... speed 2 Fresh air damper... closed Cooling... on Fan... speed 2 Fresh air damper... open Heating/cooling... off 78

TopVent commercial CAU Construction and operation Emergency operation Emergency operation can be activated and set as required by the Hoval service technician. For example, it is suitable for heating the hall before taking the control system into operation or if the controller fails during the heating period. L_OFF Off (local operating mode) The unit is switched off. Frost protection for the unit remains active. Fan... speed 2 1) Fresh air damper... closed 1) Heating... on 1) 1) adjustable by the Hoval service technician Fan... off Fresh air damper... closed Heating/cooling... off Table H1: TopVent commercial CAU operating modes H 79

TopVent commercial CAU Technical data 3 Technical data 3.1 Unit type reference MC - 9 - D / ST. D1 / R. Unit type Supply air unit with heating/cooling section Unit size 9 Heating/cooling section Coil type D Air outlet Air-Injector Installation Kit for roof installation Further options See section K 'Options' Table H2: Unit type reference 3.2 Application limits Maximum operating pressure 800 kpa Maximum heating medium temperature 1) 90 C Maximum supply air temperature 60 C Maximum extract air temperature 50 C Maximum amount of condensate 150 kg/h Minimum air flow rate 5000 m³/h The units cannot be used in: Areas where there is danger of explosion Places with a corrosive or aggressive environment Damp locations Spaces with a large amount of dust 1) Design for higher temperatures on request Table H3: Application limits 80

TopVent commercial CAU Technical data 3.3 Flow rate, product parameters Unit size CAU-9 Nominal air flow rate m³/h 9000 Floor area reached m² 946 Static efficiency of the fans % 63.6 Coil type D Effective electric power input kw 1.46 Table H4: TopVent commercial CAU technical data 3.4 Sound levels Unit size in the open air in the room Sound pressure level (at a distance of 5 m) 1) db(a) 53 59 Total sound power level db(a) 75 81 Octave sound power level 63 Hz db 43 49 125 Hz db 61 67 250 Hz db 64 70 500 Hz db 67 73 1000 Hz db 69 75 2000 Hz db 69 75 4000 Hz db 68 74 8000 Hz db 62 68 1) with a hemispherical radiation pattern in a low-reflection room H Table H5: Sound levels 81

TopVent commercial CAU Technical data 3.5 Heat output Notice The performance data listed here applies to the most frequent design conditions. Use the selection program 'HK-Select' to calculate the performance data for other design data. You can download 'HK-Select' free of charge on the Internet. Heating medium temperature 80/60 C 60/40 C Unit t F Q H max t S p W m W Q H max t S p W m W Size Type C kw m C kpa l/h kw m C kpa l/h -5 142.0 9.3 64.4 15 6101 86.7 11.7 46.1 6 3725 CAU-9 D -15 144.6 9.4 64.2 15 6212 89.3 11.7 46.0 6 3837 Legend: Type = Type of coil t F = Fresh air temperature Q = Heat output H max = Maximum mounting height t S = Supply air temperature p W = Water pressure drop m W = Water quantity Reference: Room air 18 C, extract air 20 C / 20 % rel. humidity Fresh air ratio 10% Table H6: TopVent commercial CAU heat outputs 3.6 Cooling capacities Cooling medium temperature 6/12 C 8/14 C Unit t F RH F Q sen Q tot t S p W m W m C Q sen Q tot t S p W m W m C Size Type C % kw kw C kpa l/h kg/h kw kw C kpa l/h kg/h CAU-9 D 28 40 38.1 38.1 11.8 13 5451 0.0 33.2 33.2 13.4 10 4756 0.0 60 37.7 37.8 12.0 13 5409 0.1 32.9 32.9 13.6 10 4706 0.0 32 40 47.4 64.8 12.7 39 9285 25.6 42.6 56.7 14.3 26 7626 15.7 60 47.1 68.3 12.9 43 9785 31.2 42.2 53.3 14.5 30 8126 21.3 Legend: Type = Type of coil t F = Fresh air temperature RH F = Relative humidity of the fresh air Q sen = Sensible cooling capacity Q tot = Total cooling capacity t S = Supply air temperature p W = Water pressure drop m W = Water quantity m C = Condensate quantity Reference: At fresh air temperature 28 C: room air 22 C / 50% RH, extract air 24 C At fresh air temperature 32 C: room air 26 C / 50% RH, extract air 28 C Fresh air ratio 10% Table H7: TopVent commercial CAU cooling capacities 82

TopVent commercial CAU Technical data 3.7 Dimensions and weights 1740 1860 1442 1345 80 Rp 2" R 1" 882 Rp 2" 1250 1262 872 1262 410 820 1126 1220 1100 1706 1800 H Unit size CAU-9/D Return Water content of the coil l 14.2 Weight kg 578 Flow Condensate connection Access panel Table H8: Dimensions and weights 83

TopVent commercial CAU Specification texts 4 Specification texts 4.1 TopVent commercial CAU roof unit for ventilating, heating and cooling supermarkets Housing made of non-corrosive Aluzinc sheet metal, insulated on the inside. Heat exchanger made from copper tubes and aluminium fins, manifolds and distributor made of steel, incl. pre-assembled frost controller and an integrated condensate separator with a condensate connection. Fan unit consisting of maintenance-free, direct-drive radial fan with high-efficiency EC motor and free-running rotating wheel made of a high-performance composite material with backwards-curved, 3D contoured blades. Vortex air distributor with a concentric outlet nozzle, 12 adjustable guide vanes, sound attenuation cowl and supply air temperature sensor, incl. actuator for automatic adjustment of the air blow-out direction from vertical to horizontal. Mounted on roof frame of galvanized sheet steel, painted black, with 4 transportation straps. Aluzinc sheet metal roof hood insulated on inside, with 2 weather grilles and an access door. 2 fresh air filters, class G4, with differential pressure control device for filter monitoring. Aluzinc sheet metal mixed air box with fresh air damper and recirculation damper linked to move in opposite directions; includes actuator with spring return. 4.2 Options Standard paint finish in Hoval red (RAL 3000) Paint finish as desired in RAL colour No. Hydraulic assembly diverting system Prefabricated assembly for hydraulic diverting system, consisting of mixing valve, regulating valve, ball valve, automatic air vent and screw connections for connection to the unit and to the distributor circuit. Mixing valves Mixing valve with modulating rotary actuator, sized for the coil(s) in the unit. Condensate pump Consisting of a centrifugal pump, a drip tray, max. delivery rate of 150 l/h with a delivery head of 3 m Electrical connection with TopTronic C design Control box fitted at the side of the housing as part of the TopTronic C control system. The following components are installed: Unit controller Main switch Fuse for the electronics Transformer Connection terminals The components of the unit are fully wired up. 4.3 TopTronic C control systems Freely configurable, zone-based control system ex-works for operation of decentralised Hoval indoor climate systems with optimised use of energy, suitable for demand-driven control of overall systems comprising up to 64 control zones each with up to 15 supply and extract air handling units or supply air units and 10 recirculation units. System structure Unit controller: installed in the particular indoor climate unit Zone bus (Modbus): as serial connection of all unit controllers in one control zone with the zone controller; with robust bus protocol via shielded and twisted-pair bus line (bus cables provided by the client) Zone control panel with: System operator terminal Fresh air temperature sensor Zone controllers and room air temperature sensors All components for the electrical power supply and protection System bus (Ethernet): for connecting all zone controllers to one another and to the system operator terminal as well as, if appropriate, the building management system (bus cables provided by the client) Operation TopTronic C-ST as system operator terminal: touch panel for visualisation and control by web browser via HTML interface TopTronic C-ZT as zone operator terminal: for simple on-site operation of a control zone (optional) Manual operating selector switch (optional) Manual operating selector button (optional) Operating of the units via building management system via standardised interfaces (optional) Control functions Control of the supply air temperature using room supply air cascade control via sequential control of the energy recovery and the coils (depending on the unit type) Demand-driven control of the supply air and exhaust air volumetric flows with minimum and maximum limit depending on the room temperature or, optionally, the room air quality (for supply and extract air handling units) Control of the unit including the air distribution according to the specifications of the zone controller 84

TopVent commercial CAU Specification texts Alarms, protection Central alarm management with registration of all alarms (timestamp, priority, status) in an alarm list and alarm memory of the last 50 alarms; forwarding via e-mail can be set in the parameters. If there is a failure of communication, bus stations, sensor systems or supply media, each part of the system transitions to a protection mode which safeguards operation. Frost protection control of the units with constrained control of protection functions to prevent coil icing (for supply air units as well as supply and extract air handling units) A maintenance mode implemented in the control algorithm for testing all physical data points and alarms guarantees high reliability. Options for the control system Indoor climate unit Energy monitoring (for supply and extract air handling units) Door contact (for recirculation units in the 2-pipe system) Pump control for mixing or injection system Return temperature sensor Zone control panel Alarm lamp Socket Additional room air temperature sensor Combination sensor room air quality, temperature and humidity External sensor values External set values Load shedding input Operating selector switch on terminal Operating selector button on terminal Power supply and safety relay Control of distributor pump(s), incl. power supply 4.4 System control for TopVent plants System control for operation of decentralised Hoval indoor climate systems with optimised use of energy, suitable for demand-driven control of TopVent plants comprising 1 control zone with up to 6 supply air units and 10 recirculation units (power supply for the TopVent units provided by the client). System structure Unit controller: installed in the particular indoor climate unit Zone bus (Modbus): as serial connection of all unit controllers with the zone controller; with robust bus protocol via shielded and twisted-pair bus line (bus cables provided by the client) Zone control panel with: Zone controller with operating panel C-SCT, making it simple to operate and monitor the system Fresh air temperature sensor Room temperature sensor External connections: Enable heating Trouble input heating Enable cooling Trouble input cooling Collective trouble indicator Forced off Cooling lock switch Changeover valves heating/cooling Additional room temperature sensor (max. 1) Operating selector switch on terminal (analogue) Operating selector button on terminal (analogue) External setpoint fresh air ratio Control functions Control of the supply air temperature using room supply air cascade control Control of the unit including the air distribution according to the specifications of the zone controller Alarms, protection Central alarm management with registration of all alarms (timestamp, priority, status) in an alarm list and alarm memory of the last 50 alarms. If there is a failure of communication, bus stations, sensor systems or supply media, each part of the system transitions to a protection mode which safeguards operation. Frost protection control of the units with constrained control of protection functions to prevent coil icing (for supply air units) A maintenance mode implemented in the control algorithm for testing all physical data points and alarms guarantees high reliability. Options for the control system Indoor climate unit Door contact (for recirculation units in the 2-pipe system) Pump control for mixing or injection system Return temperature sensor Zone control panel Additional room temperature sensor Bus interface for operating of the units via building management system H 85

TopVent HV Content TopVent HV Recirculation unit for heating spaces up to 6 m in height I 1 Use 88 2 Construction and operation 88 3 Technical data 90 4 Specification texts 93 87

TopVent HV Use 1 Use 2 Construction and operation 1.1 Intended use The TopVent HV unit is used to heat spaces with a height of up to 6 m in recirculation operation. Also included under intended use are compliance with the installation, commissioning, operating and maintenance provisions (operating instructions). Any use beyond this is considered improper use. The manufacturer can accept no liability for damage resulting from improper use. 1.2 User group The TopVent HV has been developed for cost-efficient heating of spaces with a height of up to 6 m. The unit is installed under the ceiling or on the wall. It takes in room air, heats it in the heating coil and blows it back into the room through the outlet louvre. The unit is available in 3 sizes, each with a 2-speed fan as standard so that altogether 6 different heat outputs can be selected. The TopVent HV consists of the fan and the heating coil, which are built into a housing made of galvanised sheet steel. A outlet louvre with individually adjustable air guide vanes is installed on the underside. TopVent units may only be installed, operated and maintained by authorised and trained skilled personnel. The operating instructions are for operating engineers and technicians as well as specialists in building, heating and ventilation technology. Outlet louvre: Vanes for manual adjustment of the air distribution Terminal box Housing: Made of galvanised sheet steel Fan: maintenance-free and low-noise Heat exchanger: Heating coil consisting of copper tubes with aluminium fins Fig. I1: TopVent HV structure 88

TopVent HV Construction and operation 2.1 Operating modes The TopVent HV operates in the following modes: Recirculation speed 2 Recirculation speed 1 Off Code Operating mode Description REC Recirculation On/off-operation: if heating is required, the unit draws in room air, heats it and returns the warm air back into the room. The room temperature set value day is active. REC1 Recirculation speed 1 the same as REC, but the unit operates only at fan speed 1 (low air flow rate) Fan... speed 2 1) Heating... on 1) for heat demand Fan... speed 1 1) Heating... on 1) for heat demand OFF Off The unit is switched off. Fan... off Heating... off Table I1: TopVent HV operating modes I 89

TopVent HV Technical data 3 Technical data 3.1 Unit type reference 3.2 Application limits Unit type TopVent HV Unit size 2, 3 or 5 Table I2: Unit type reference HV - 2 Maximum operating pressure 800 kpa Maximum heating medium temperature 1) 120 C Maximum supply air temperature 60 C Maximum extract air temperature 40 C The units cannot be used in: Areas where there is danger of explosion Places with a corrosive or aggressive environment Damp locations Spaces with a large amount of dust Table I3: Application limits 3.3 Air flow rate, electrical connection Unit size HV-2 HV-3 HV-5 Fan speed 1 2 1 2 1 2 Speed of rotation (nominal) min -1 1000 1350 1050 1375 600 900 Nominal air flow rate m³/h 1500 2000 2600 3400 3300 5300 Max. floor area reached 1) m² 36 49 49 81 49 121 Power consumption (at 400 V / 50 Hz) kw 0.08 0.11 0.21 0.29 0.25 0.35 Current consumption (at 400 V / 50 Hz) A 0.1 0.18 0.28 0.47 0.39 0.72 1) Mounting height H max = 5 m for a temperature difference between supply air and room air of up to 30 K Table I4: Technical data 90

TopVent HV Technical data 3.4 Heat output Heating medium temperature 80/60 C 60/40 C Unit t AI Q H max t S p W m W Q H max t S p W m W Size Speed C kw m C kpa l/h kw m C kpa l/h HV-2 HV-3 HV-5 1 2 1 2 1 2 15 10 3.5 35 0.3 442 6 4.4 26 0.1 237 20 9 3.6 38 0.3 395 4 4.8 29 0.1 191 15 12 4.5 32 0.4 521 6 5.8 24 0.1 278 20 11 4.7 36 0.4 466 5 6.4 27 0.1 223 15 18 3.9 35 3 757 10 4.8 26 1 435 20 16 4.1 38 2 682 8 5.3 29 1 359 15 21 5 32 4 881 12 6.3 25 1 505 20 19 5.3 36 3 794 10 6.9 28 1 417 15 26 3.3 38 3 1127 15 4.1 28 1 643 20 24 3.5 41 3 1015 12 4.4 31 1 530 15 35 5.1 34 5 1480 20 6.5 26 2 840 20 31 5.4 37 4 1332 16 7.1 29 1 691 Legend: Speed = Fan speed t AI = Air entry temperature Q = Heat output H max = Maximum mounting height t S = Supply air temperature p W = Water pressure drop m W = Water quantity Table I5: TopVent HV heat outputs 3.5 Reach for horizontal air flow 0 30 45 60 TopVent HV 2 3 5 Distance from wall W min. m 0.54 0.54 0.54 Reach Y 1) min. m 14 17 20 1) The vanes of the outlet louvre are directed parallel to the air flow (horizontal = 0 ). When the vanes are adjusted, the range is reduced as a function of the mounting height. I W Y Table I6: Reach for horizontal air flow 91

TopVent HV Technical data 3.6 Sound data Unit size HV-2 HV-3 HV-5 Fan speed 1 2 1 2 1 2 Sound pressure level (at a distance of 5 m) 1) db(a) 47 54 51 59 49 59 Total sound power level db(a) 69 76 73 81 71 81 Octave sound power level 63 Hz db 62 71 75 125 Hz db 65 76 75 250 Hz db 73 82 80 500 Hz db 71 77 77 1000 Hz db 68 72 72 2000 Hz db 65 67 68 4000 Hz db 64 66 66 8000 Hz db 56 61 59 1) with a hemispherical radiation pattern in a low-reflection room Table I7: Sound levels 3.7 Dimensions and weights D 300 Rp 1" M8 Rp 1" 108 158 200 C B A Unit size HV-2 HV-3 HV-5 Flow A mm 450 580 730 B mm 380 510 660 C mm 240 370 420 D mm 342 348 354 Water content of the coil l 1.2 1.8 2.3 Weight kg 18 28 42 Return Table I8: Dimensions and weights 92

TopVent HV Specification texts 4 Specification texts 4.1 TopVent HV Recirculation unit for heating spaces up to 6 m in height Housing made of galvanized sheet steel, standard equipment with 4 threaded bolts M8 with nuts and washers for ceiling installation. Heat exchanger made from copper tubes and aluminium fins, manifolds and distributor made from steel. Fan unit consisting of a 2-speed, three-phase external rotor motor with pressure-resistant aluminium die-cast blades, maintenance-free and quiet, with a high degree of efficiency rating. Motor protection through built-in thermal contacts. Protection class IP 54. Terminal box integrated into the side of the housing to connect supply voltage. Outlet louvre with individually adjustable air guide vanes. 4.2 Options Suspension set AW For wall or ceiling installation of the units, consisting of 2 sheet metal brackets Suspension set AD For ceiling installation of the units, consisting of 4 steel flats and brackets 4.3 Control system I Room temperature control with the EasyTronic ET Basic switching device with 2-point control and manual changeover between fan speed levels 1 and 2 EasyTronic ET, switching device for heating mode, as a wall unit in a plastic housing, including room thermostat 93

TopVent curtain Content TopVent curtain Air curtain J 1 Use 96 2 Construction and operation 96 3 Technical data 98 4 Specification texts 101 95

TopVent curtain Use 1 Use 2 Construction and operation 1.1 Intended use The TopVent curtain is a recirculating air heating unit with an outlet nozzle for use as an air curtain for doors of up to 6 m in height. Also included under intended use are compliance with the installation, commissioning, operating and maintenance provisions (operating instructions). Any use beyond this is considered improper use. The manufacturer can accept no liability for damage resulting from improper use. 1.2 User group The TopVent curtain is a recirculating air heating unit with an outlet nozzle for use as an air curtain for doors of up to 6 m in height. Several TopVent curtain units are mounted over the hall door. They take in the room air, heat it in the heating coil and blow it downwards through the outlet nozzle. The resulting air curtain minimises any external influences on the room climate. It prevents the incidence of cold air and increases the usable area in the hall. The unit is available in 3 sizes, each with a 2-speed fan as standard so that altogether 6 different heat outputs can be selected. The TopVent curtain consists of the heating section (with fan and heating coil) and the outlet nozzle. TopVent units may only be installed, operated and maintained by authorised and trained skilled personnel. The operating instructions are for operating engineers and technicians as well as specialists in building, heating and ventilation technology. Outlet nozzle Terminal box Fan: maintenance-free and low-noise Heat exchanger: Heating coil consisting of copper tubes with aluminium fins Housing: Made of galvanised sheet steel Fig. J1: TopVent curtain structure 96

TopVent curtain Construction and operation 2.1 Operating modes The TopVent curtain operates in the following modes: Recirculation speed 2 Recirculation speed 1 Off Code Operating mode Description REC2 Recirculation On/off-operation: if heating is required, the unit draws in room air, heats it and returns the warm air back into the room. The room temperature set value day is active. REC1 Recirculation speed 1 the same as REC, but the unit operates only at fan speed 1 (low air flow rate) Fan... speed 2 1) Heating... on 1) for heat demand Fan... speed 1 1) Heating... on 1) for heat demand OFF Off The unit is switched off. Fan... off Heating... off Table J1: TopVent curtain operating modes J 97

TopVent curtain Technical data 3 Technical data 3.1 Unit type reference 3.2 Application limits Unit type TopVent curtain Unit size 2, 3 or 5 Table J2: Unit type reference CUR - 2 Maximum operating pressure 800 kpa Maximum heating medium temperature 1) 120 C Maximum supply air temperature 60 C Maximum extract air temperature 40 C The units cannot be used in: Areas where there is danger of explosion Places with a corrosive or aggressive environment Damp locations Spaces with a large amount of dust Table J3: Application limits 3.3 Air flow rate, electrical connection Unit size CUR-2 CUR-3 CUR-5 Fan speed 1 2 1 2 1 2 Speed of rotation (nominal) min -1 1000 1350 1050 1375 600 900 Nominal air flow rate m³/h 1500 2000 2600 3400 3300 5300 Max. floor area reached 1) m² 36 49 49 81 49 121 Power consumption (at 400 V / 50 Hz) kw 0.08 0.11 0.21 0.29 0.25 0.35 Current consumption (at 400 V / 50 Hz) A 0.1 0.18 0.28 0.47 0.39 0.72 1) Mounting height H max = 5 m for a temperature difference between supply air and room air of up to 30 K Table J4: Technical data 98

TopVent curtain Technical data 3.4 Heat output Heating medium temperature 80/60 C 60/40 C Unit t AI Q t S p W m W Q t S p W m W Size Speed C kw C kpa l/h kw C kpa l/h CUR-2 CUR-3 CUR-5 1 2 1 2 1 2 15 10 35 0.3 442 6 26 0.1 237 20 9 38 0.3 395 4 29 0.1 191 15 12 32 0.4 521 6 24 0.1 278 20 11 36 0.4 466 5 27 0.1 223 15 18 35 3 757 10 26 1 435 20 16 38 2 682 8 29 1 359 15 21 32 4 881 12 25 1 505 20 19 36 3 794 10 28 1 417 15 26 38 3 1127 15 28 1 643 20 24 41 3 1015 12 31 1 530 15 35 34 5 1480 20 26 2 840 20 31 37 4 1332 16 29 1 691 Legend: Speed = Fan speed t AI = Air entry temperature Q = Heat output H max = Maximum mounting height t S = Supply air temperature p W = Water pressure drop m W = Water quantity Table J5: TopVent curtain heat outputs J 99

TopVent curtain Technical data 3.5 Sound data Unit size CUR-2 CUR-3 CUR-5 Fan speed 1 2 1 2 1 2 Sound pressure level (at a distance of 5 m) 1) db(a) 47 54 51 59 49 59 Total sound power level db(a) 69 76 73 81 71 81 Octave sound power level 63 Hz db 62 71 75 125 Hz db 65 76 75 250 Hz db 73 82 80 500 Hz db 71 77 77 1000 Hz db 68 72 72 2000 Hz db 65 67 68 4000 Hz db 64 66 66 8000 Hz db 56 61 59 1) with a hemispherical radiation pattern in a low-reflection room Table J6: Sound levels 3.6 Dimensions and weights A B C M8 D 300 Rp 1" Rp 1" 108 158 200 ExF Unit size CUR-2 CUR-3 CUR-5 Flow A mm 450 580 730 B mm 380 510 660 C mm 240 370 420 D mm 647 703 774 E x F mm 391 x 160 521 x 240 651 x 285 Water content of the coil l 1.2 1.8 2.3 Weight kg 22 36 53 Return Table J7: Dimensions and weights 100

TopVent curtain Specification texts 4 Specification texts 4.1 TopVent curtain air curtain Housing made of galvanised sheet steel, standard equipment with 4 threaded bolts M8 with nuts and washers for fastening and suspension. Heat exchanger made from copper tubes and aluminium fins, manifolds and distributor made from steel. Fan unit consisting of a 2-speed, three-phase external rotor motor with pressure-resistant aluminium die-cast blades, maintenance-free and quiet, with a high degree of efficiency rating. Motor protection through built-in thermal contacts. Protection class IP 54. Terminal box integrated into the side of the housing to connect supply voltage. Outlet nozzle made of galvanized sheet steel. 4.2 Control system Room temperature control with the EasyTronic ET Basic switching device with 2-point control and manual changeover between fan speed levels 1 and 2 EasyTronic ET, switching device for heating mode, as a wall unit in a plastic housing, including room thermostat J 101

102

Options Content 1 Unit type reference 104 2 Availability 107 3 Air outlet box 108 4 Suspension set 108 5 Filter box 109 6 Flat filter box 109 7 Paint finish 109 8 Recirculation silencer 110 9 Acoustic cowl 110 10 Hydraulic assembly diverting system 111 11 Mixing valve 113 12 Condensate pump 113 Options K 103

Options Unit type reference 1 Unit type reference 1.1 Unit type reference for recirculation units (DHV, NHV, DKV, DHKV, CUM) Unit type TH Recirculation unit with heating section TC Recirculation unit with heating/cooling section THC Recirculation unit with heating and cooling section Unit size 6 or 9 Heating section - without heating section A with coil type A B with coil type B C with coil type C Heating/cooling section - without heating/cooling section C with coil type C D with coil type D Design ST Standard Air outlet D1 Design with 1 Air-Injector DK Air outlet box DN Air outlet nozzle Installation - without S Suspension set R Kit for roof installation Filter box - without FK Filter box FF Flat filter box Paint finish - without LH Standard paint finish LU Paint finish as desired THC - 9 B C / ST. D1 / S. FK. LH. UA / Y. KP / TC. D. PP. RF 104

Options Unit type reference THC - 9 B C / ST. D1 / S. FK. LH. UA / Y. KP / TC. D. PP. RF Silencer - without U- Recirculation silencer -A Acoustic cowl UA Recirculation silencer and acoustic cowl Hydraulics - without Y Hydraulic assembly diverting system M Mixing valve Condensate pump - without KP Condensate pump Control system TC TopTronic C KK Terminal box design Door contact - without D Door contact Pump control - without PH Heating pump PK Heating or cooling pump PP Heating pump and cooling pump Return temperature sensor - without RF Return temperature sensor K 105

Options Unit type reference 1.2 Unit type reference for supply air units (MH, MK, CAU) Unit type MH Supply air unit with heating section MC Supply air unit with heating/cooling section Unit size 6 or 9 Heating section - without heating section A with coil type A B with coil type B C with coil type C Heating/cooling section - without heating/cooling section C with coil type C D with coil type D Design ST Standard Air outlet D1 Design with 1 Air-Injector Installation - without S Suspension set R Kit for roof installation Reserve Paint finish - without LH Standard paint finish LU Paint finish as desired Silencer - without A Acoustic cowl Hydraulics - without Y Hydraulic assembly diverting system M Mixing valve Condensate pump - without KP Condensate pump MH - 9 B - / ST. D1 / S. FK. LH. A / Y. KP / TC. PH. RF 106

Options Availability MH - 9 B - / ST. D1 / S. FK. LH. A / Y. KP / TC. PH. RF Control system TC TopTronic C Pump control - without PH Heating pump PK Heating or cooling pump Return temperature sensor - without RF Return temperature sensor 2 Availability The following optional components are available for the various unit types: DHV NHV DKV DHKV CUM MH MK CAU HV CUR Air outlet box Suspension set Kit for roof installation 1) Filter box 2) Flat filter box Paint finish Recirculation silencer Acoustic cowl Hydraulic assembly Mixing valve Condensate pump Door contact 3) Pump control 3) Return temperature sensor 3) 1) See section E 'TopVent commercial CUM' and section H 'TopVent commercial CAU'. 2) Fresh air filters class G4 are an integral part of the roof hood. 3) These options are not available for units in terminal box design. K Legend: = not available = optional = standard equipment Table K1: Availability of options 107

Options Air outlet box 3 Air outlet box To adapt TopVent units to use in low-ceiling spaces, an outlet box instead of the Air-Injector can be mounted. This reduces the minimum mounting height by 1 m compared to the standard design. The air outlet box has horizontal exhaust air grilles on all sides. The vanes can be manually adjusted without tools to adapt the air discharge angle to the local conditions. Notice The air outlet box replaces the Air-Injector. The total height of the unit is somewhat smaller; the weight is approximately the same. Type DK-6 DK-9 A mm 900 1100 H mm 350 400 Weight kg 36 53 Table K2: Dimensions and weights of the air outlet box 4 Suspension set For ease of installation of the units on ceiling or wall, there are suspension sets available. There are 3 variants: Type Layout Use Design S Ceiling installation TopVent DHV, NHV, DKV, DHKV, MH, MK of aluzinc sheet steel height adjustable to a maximum of 1300 mm AW Wall or ceiling installation TopVent HV 2 sheet metal brackets 540 AD Ceiling installation TopVent HV 4 steel flats and brackets 475 Table K3: Suspension sets 108

Options Filter box 5 Filter box 6 Flat filter box A filter box with 2 class G4 bag filters can be installed for the purpose of filtering the recirculation air. The modular construction made of aluzinc sheet metal with 2 sliding doors makes it easy to replace the filters. Notice In the planning phase make sure there is enough space in front of the sliding doors so that the filters can be replaced with ease. A flat filter box can be installed for the purpose of filtering the recirculation air. 4 class G4 pleated cell-type filters can be installed in it. A pressure difference control device is installed for automatic monitoring of the filter. It shows when the filters have to be cleaned or changed. A pressure difference control device is installed for automatic monitoring of the filter. It shows when the filters have to be cleaned or changed. B A Type FK-6 FK-9 A mm 900 1100 Q mm 400 400 Weight kg 24 28 Table K4: Dimensions and weights of the filter box Type FF-6 FF-9 A mm 900 1100 B mm 140 165 Weight kg 9 11 Table K5: Dimensions and weights of the flat filter box 7 Paint finish K If the customer wishes, the units can be provided with an exterior paint finish. There are 2 possibilities: Standard paint finish The units are painted in the standard Hoval red (RAL 3000) at no extra cost (exception: roof hood). Paint finish as desired In order for them to harmonise with the room colour, the units can be delivered with a paint finish in any colour required (at an additional cost, when ordering, quote RAL number). 109

Options Recirculation silencer 8 Recirculation silencer 9 Acoustic cowl The use of a recirculation silencer for noise reduction is recommended mainly if the TopVent units are installed under flat, hard ceilings (e.g. made of concrete or sheet steel). The recirculation silencer is mounted on the appliance and thus reduces the sound reflection from the ceiling. Insertion attenuation is 3 db (A) compared with the total sound power level of each TopVent unit. Mount the recirculation units as usual via the 4 fastening points in the heating or heating /cooling section (for example, using the optional suspension set). The acoustic cowl reduces the noise level in the room; it is installed in the Air-Injector. This does not change the outside dimensions of the Air-Injector. Insertion attenuation is 4 db compared with the total sound power level of each TopVent unit. Caution Risk of injury from falling parts. The silencer cannot bear the weight of the appliance! Do not locate any suspension points on the silencer! A H Type U-6 U-9 A mm 900 1100 H mm 380 485 Weight kg 15 20 Table K6: Dimensions and weights of the recirculation silencer 110

Options Hydraulic assembly diverting system 10 Hydraulic assembly diverting system Pressure drop in kpa 240 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 Assemblies for hydraulic diverting, which are optimally matched to the units, are available for easy installation of TopVent units. Please note the following: Thermally insulate the assembly on site. To ensure correct operation, install the assembly horizontally. Mount the assembly so that its weight does not need to be absorbed by the coil. 220 200 180 160 140 120 100 80 60 3.0 4.0 Default settings for the hydraulic alignment Read off the default settings from Diagram K1. The curves 1.0 to 4.0 correspond to the revolutions of the valve spindles of the balancing valve; they are shown on the turning knob: 0.0 Valve closed 4.0 Valve fully open The coil and the hydraulic assembly are already included in the specified pressure drops. Thus, only consider the pressure drops of the distributor circuit up to the screw connections. 40 20 0 1000 240 220 200 180 160 140 120 2000 9AB 3000 4000 5000 6000 7000 8000 9000 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 3.0 4.0 100 80 60 Pressure drop in kpa 40 20 9C 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 240 220 200 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 3.0 4.0 240 220 200 1.0 1.2 1.4 1.6 1.8 2.0 180 160 140 180 160 140 2.2 2.4 2.6 3.0 120 120 4.0 100 100 80 80 60 60 40 20 0 1000 1500 2000 2500 3000 3500 4000 6AB 4500 5000 40 20 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 9D 11000 12000 240 220 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 Water flow rate in l/h Diagram K1: Default values for the balancing valves K 200 3.0 180 160 4.0 140 120 100 80 60 40 20 0 6C 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 Water flow rate in l/h 111

Options Hydraulic assembly diverting system D A D A B E B 466 466 260 827 C 106 767 Automatic air vent Coil screw joint Control valve Distributor circuit screw joint Flow Mixing valve Ball valve Return Table K7: Dimensional drawing of the hydraulic assembly for TopVent DHV, NHV, DKV, DHKV, MH, MK Automatic air vent Drain valve Adapter with screw union for coil connection Control valve Distributor circuit screw joint Flow Mixing valve Ball valve Return Table K8: Dimensional drawing of the hydraulic assembly for TopVent commercial CAU, CUM Type A B C D E Mixing valve Control valve Screw joint Y-6AB 758 78 726 853 300 20-6.3HV STAD DN32 1¼ " Y-6C 758 78 745 853 300 25-10HV STAD DN32 1¼ " Y-9AB 882 78 770 977 320 25-10HV STAD DN40 1½ " Y-9C 882 78 791 977 320 32-10HV STAD DN40 1½ " Y-9D 882 95 840 977 340 40-16HV STAD DN50 2 " Y-9D/R 882 95 977 40-16HV STAD DN50 2 " Table K9: Dimensions (in mm) and valves of the hydraulic assembly 112

Options Mixing valve 11 Mixing valve 12 Condensate pump Mixing valves, which are optimally matched to the units, are available for easy installation of TopVent units. They have the following specifications: 3-way mixing valve with modulating rotary actuator (run time 9 s) Flow characteristic: Equal percentage control path Linear bypass Integrated position control and response TopVent cooling units must be connected to a condensate drainage system. For applications in which connection to the waste water system is too expensive or not possible for structural reasons, a condensate pump can be provided. This is installed directly under the condensate drain connection; the supplied container is prepared for installation on the Air-Injector. It pumps the condensate through a flexible hose to a delivery head of 3 m, thus enabling discharge of the condensate through waste water pipes directly below the ceiling, onto the roof. 65 140 93 Flow rate (at 3 m delivery head) l/h max. 150 Tank capacity l max. 1.9 Dimensions (L x W x H) mm 288 x 127 x 178 Weight kg 2.4 H 98 X DA Table K12: Technical data of the condensate pump DI L Y M Type DN kvs DA DI L H M X Y m³/h " " mm mm mm mm mm M-6AB 20 6.3 G 1¼ Rp ¾ 86 46 42 220 90 M-6C 25 10 G 1½ Rp 1 85 46 45 220 90 M-9AB 25 10 G 1½ Rp 1 85 46 45 220 90 M-9C 32 10 G 2 Rp 1¼ 104 46 56 220 90 M-9D 40 16 G 2¼ Rp 1½ 115 51 56 230 90 Fig. K1: Condensate pump Table K10: Dimensions of the mixing valves Type Weight kg M-6AB 2.6 M-6C 3.1 M-9AB 3.1 M-9C 4.0 M-9D 4.7 Table K11: Weights of the mixing valves Notice You will find a description of the options for the control system in section M 'Control systems' of this handbook. K 113

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Transport and installation Content 1 Installation 116 2 Hydraulic installation 118 3 Electrical installation 122 Transport and installation L 115

Transport and installation Installation 1 Installation 1.2 Unit installation TopVent units are supplied as complete units on pallets. A lifting gear is required to transport and install the units. 1.1 Positioning When positioning the units consider the following: Comply with the minimum and maximum distances. All air inlet and air outlet openings must be freely accessible. The supply air jet must be free to spread out unhindered. The units must be freely accessible for service and maintenance. The connecting lines must be able to be dismantled for service and maintenance. TopVent DHV, NHV, DKV, DHKV, MH, MK Define the desired orientation of the units (position of the coil connections). Only attach the unit to ceilings with sufficient load-bearing capacity. For the purposes of installation the units are provided with 4 M10 rivet nuts with hexagon bolts and washers. Attach the units using a suspension set (option) or by means of a steel flat, slotted steel flat, angles, steel cables, etc. Do not use eyebolts. Do not attach any additional loads. Install the devices horizontally. Non-vertical suspensions are permissible up to a maximum angle of 45. Connect the TopVent MH and MK units to a fresh air duct via a canvas connection and connect both flanges with an earth wire. X/2 X Y Z 45 45 45 45 Unit size 6 9 Distance X min. m 12 14 max. m 23 31 Mounting height Y min. m 4 5 Distance from ceiling Z 1) min. m 0.3 0.4 TopVent HV HV-2 HV-3 HV-5 Fan speed 1 2 1 2 1 2 Distance X min. m 4 5 5 6 6 8 max. m 6 7 7 9 7 11 Mounting height Y min. m 3 3 3 3 3 3 Distance from ceiling Z min. m 0.3 0.3 0.3 0.3 0.3 0.3 Distance from wall W 2) min. m 0.54 0.54 0.54 0.54 0.54 0.54 Fig. L1: TopVent DHV, NHV, DKV, DHKV Fig. L2: TopVent MH, MK W 1) for TopVent DHV, DKV, NHV 2) for wall installation Table L1: Minimum and maximum distances 116

Transport and installation Installation TopVent commercial CAU, CUM The units are supplied as complete units with roof frame and roof hoods and are installed from the roof using a crane or a helicopter. Ensure that the roof support is flat and level. Apply sealing compound (silicone that is free from acetic acid, polyurethane, or similar) to the roof opening. Hook lifting gear into the 4 lugs on the sides of the roof frame. Lift the unit onto the roof and turn it to the correct position (coil connections). Insert the units into the roof opening and fix them in place. Insulate and seal the roof frame from outside. Do not attach any additional loads. TopVent HV Define the desired orientation of the units (position of the coil connections). Only attach the unit to ceilings or walls with sufficient loadbearing capacity. For the purposes of installation, the units are provided with 4 threaded bolts M8 with nuts and washers. Attach the units using a suspension set (option) or by means of a steel flat, slotted steel flat, angles, steel cables, etc. Do not use eyebolts. Do not attach any additional loads. Non-vertical suspensions are permissible up to a maximum angle of 45. Notice Alternatively, installation is also possible in 2 steps: first of all, install the roof frame with the roof hood, then remove the roof hood and insert the ventilation unit from above. 45 45 min. 300 mm Fig. L4: TopVent HV ceiling installation Fig. L5: TopVent HV wall installation Fig. L3: TopVent commercial CAU, CUM TopVent curtain Check whether the coil connections and the outlet nozzle are in the correct position relative to one another. If necessary, undo the screw connection between the outlet nozzle and the heating section and screw the components into the required position. Only attach the unit to walls with sufficient load-bearing capacity. For the purposes of installation, the units are provided with 4 threaded bolts M8 with nuts and washers. Attach the units using a steel flat, slotted steel flat, angles, steel cables, etc. Do not use eyebolts. Do not attach any additional loads. min. 300 mm L 100...300 mm Fig. L6: TopVent curtain 117

Transport and installation Hydraulic installation 2 Hydraulic installation 2.1 Heating/cooling coil The TopTronic C control system is designed for a distributor circuit with separate hydraulic connection of the units; i.e. a mixing valve is installed in front of each unit. The diverting system is used as standard. Requirements on the boiler system and the distributor circuit Hydraulically coordinate the pipework for the individual units within a control zone to ensure even distribution. The heating medium must be available at the mixing valve without delay in the required amount and temperature. The condensate separator in cooling units only functions while the fan is running. No coolant must be allowed to circulate in the coil when the unit is switched off. The heating/cooling changeover valves must be designed with a digital position response. Depending on local conditions, check whether compensators for linear expansion are required for the supply and return lines and/or articulated connections are required for the units. Do not fasten any loads to the coil, e.g. by means of the flow or return lines. Insulate the hydraulic lines. The TopTronic C control system switches on the heating/ cooling pumps and 'Enable heating/cooling' every day. This prevents the pumps from blocking in case of a long shutdown. 2.2 Condensate connection Condensate arising in cooling units must be removed via a condensate-proof line. Install and insulate the supplied trap on the condensate connection of the unit. Dimension the slope and cross-section of the condensate line so that no condensate backflow takes place. Route the condensate line from the pump directly upwards. Ensure that the condensate produced is drained in compliance with local regulations. Notice Use the 'Condensate pump' option for quick and easy hydraulic installation. Pipework requirements Use 3-way mixing valves with the following flow characteristics: Equal percentage control path Linear bypass The valve authority must be 0.5. The valve actuator must have a short run time (< 10 s). The valve actuator must be continuous, i.e. the stroke changes in proportion to the control voltage (DC 2 10 V). The valve actuator must be designed with a position response (0...10 V DC or 2 10 V DC). The maximum power consumption is 20 VA. Install the valve close to the unit (max. distance 2 m). Notice Use the 'Hydraulic assembly' or 'Mixing valve' options for quick and easy hydraulic installation. 118

Transport and installation Hydraulic installation < 2 m L Unit control box Zone bus Power supply Mixing valve Collective trouble indicator Fresh air temperature sensor Room temperature sensor Trouble input heating Distributor pump System operator terminal Zone control panel Enable heating Heating control panel Table L2: Conceptual drawing for hydraulic diverting system heating 119

Transport and installation Hydraulic installation < 2 m Unit control box Zone bus Power supply Mixing valve Collective trouble indicator Fresh air temperature sensor Room temperature sensor Trouble input heating Trouble input cooling Distributor pump System operator terminal Zone control panel Cooling lock switch Enable heating Enable cooling Heating control panel Changeover valves heating/ cooling Heating circuit Cooling circuit Table L3: Conceptual drawing for hydraulic diverting system heating and cooling in the 2-pipe system 120

Transport and installation Hydraulic installation Unit control box Room temperature sensor Cooling lock switch L Zone bus Trouble input heating Enable heating Power supply Trouble input cooling Enable cooling Mixing valve cooling Distributor pump heating Heating control panel Mixing valve heating Distributor pump cooling Heating circuit Collective trouble indicator System operator terminal Cooling circuit Fresh air temperature sensor Zone control panel Table L4: Conceptual drawing for hydraulic diverting system heating and cooling in the 4-pipe system 121

Transport and installation Electrical installation 3 Electrical installation Unit size DHV-6 NHV-6 MH-6 DHV-9 NHV-9 MH-9 DKV DHKV CUM MK CAU Supply voltage V AC 3 x 400 3 x 400 3 x 400 Voltage tolerance % ± 5 ± 5 ± 5 Frequency Hz 50 50 50 Connected load kw 1.25 1.85 3.1 Current consumption max. A 2.1 3.2 5.1 3.2 Units with terminal box design The electrical installation is to be carried out only by a qualified electrician. Observe all applicable regulations (e.g. EN 60204-1). For long supply lines, select cable cross-sections in accordance with the technical regulations. Carry out the electrical installation in line with the terminal diagram (main switch, circuit breaker, fuses on site). Route signal and bus lines separately from mains cables. Table L5: Electrical connection Notice The connected load is the determining factor for calculating cable cross section. The effective electric power input is indicated in the 'Technical data' chapter of the individual unit types. 3.1 Units with TopTronic C design The electrical installation is to be carried out only by a qualified electrician. Observe all applicable regulations (e.g. EN 60204-1). For long supply lines, select cable cross-sections in accordance with the technical regulations. Electrical installation to be carried out according to wiring diagram. Route signal and bus lines separately from mains cables. Connect the mixing valves and door contact (optional) to the unit control box. Make sure the lightning protection system for the units or for the entire building is planned and carried out by professionals. Provide overload protection equipment on site in the mains connection line of the zone control panel. Caution Use an all-pole sensitive residual current circuit breaker for a leakage current protective circuit. 122

Control system Content 1 TopTronic C control system 124 2 System control for TopVent 134 3 Room temperature control with the EasyTronic EC 135 4 Room temperature control with the EasyTronic ET 136 Control systems M 123

Control system TopTronic C control system 1 TopTronic C control system 1.1 System structure Hoval TopTronic C, the integrated control system for decentralised indoor climate systems, works fully automatically to ensure that all components operate with energy efficiency and according to requirements. BMS There is one zone controller for each control zone in the zone control panel. It switches the operating modes according to the calendar, sends the outdoor and room temperatures to the individual units, manages set values and functions as an interface to external systems. A system comprises up to 64 control zones with the following types of indoor climate units: Supply and extract air handling units (VENU) Supply air units (REMU) Recirculation units (RECU) The following variants of control zones are available: Type of units max. Supply and extract air handling units 15 Supply air units 15 Recirculation units 15 Supply and extract air handling units + Recirculation units 1) 15 + 10 Supply air units + Recirculation units 1) 15 + 10 1) The recirculation units are switched on depending on heat or cool demand. Table M1: Variants of control zones System bus The system bus combines all zone controllers with the system operation. Cable type: Ethernet cable CAT5 Table M2: Specification of system bus Building management system System bus System operator terminal Zone controller Zone bus Unit controller Connection for zone operator terminal Zone operator terminal Fig. M1: System structure TopTronic C Basic principles Indoor climate units that operate under the same conditions are grouped into control zones. The criteria concerning how the zones are created can be, for example, operating times, room temperature set values and so on. The individual units are individually regulated and controlled zone-by-zone: A unit controller is integrated in each indoor climate unit and controls it according to the local conditions. Zone bus The zone bus functions as serial connection and connects all unit controllers in one control zone with the corresponding zone controller. Cable type: Communication: Length: Bus termination Topology: Table M3: Specification of zone bus J-Y(ST)Y 2 x 2 x 0.8 mm Modbus max. 1000 m Plan repeaters and on-site power supply for longer lengths. Terminate the zone bus at both ends with a 120 Ω, ¼ W resistor. Line 124

Control system TopTronic C control system 1.2 Operating options System operator terminal The system operator terminal is a touch panel with a colour display, making it simple and clear to operate the system. It gives trained users access to all information and settings that are necessary for normal operation: Display and setting of operating modes Display of temperatures and setting of the room temperature set values Display and programming of the weekly and annual calendar Display and handling of alarms and maintaining an alarm log Display and setting of control parameters Differentiated password protection The system operator terminal is installed in the door of the zone control panel, or supplied loose. At least 1 system operator terminal is required for each system. A maximum of 3 system operator terminals can be used per system or 1 per zone control panel. Electrical supply: 24 V AC (-15 +10%) 50 60 Hz, max. 1.3 A (27 VA) 12 30 V DC ± 5% max. 1.0 A at 12 V DC Power consumption: max. 12 W Communication: via system bus (Ethernet interface) Zone operator terminal The zone operator terminal is used for simple on-site operation of a control zone. It offers the following functions: Display of the current room temperature actual value Increase or decrease the set value by up to 5 C Manual changeover of the operating mode Display of the collective fault signal The zone operator terminal is installed in the door of the zone control panel, or supplied loose for surface or flush mounting in any location. Electrical supply: Cable type: Length: Table M5: Technical data of the zone operator terminal 86 24 V AC J-Y(ST)Y 4 x 2 x 0.8 mm max. 250 m 143 8 28 Fig. M3: Dimensional drawing for the zone operator terminal for surface mounting (dimensions in mm) Table M4: Technical data of the system operator terminal 176 86 48 147 136 86 8 22 28 187 45 4 Fig. M4: Dimensional drawing for the zone operator terminal for flush mounting (dimensions in mm) Fig. M2: Dimensional drawing and borehole diagram for the system operator terminal (dimensions in mm) M 125

Control system TopTronic C control system Operating selector switch An operating selector switch makes it possible to specify an operating mode manually for a control zone. Automatic mode according to the calendar is overridden. The units work in the selected operating mode until the switch is moved back to 'Auto'. The switches are installed in the door of the zone control panel. There is only 1 operating selector switch for each control zone. The operating modes available depend on the unit types present in the zone in question. Notice Operating selector switches installed in the panel door cannot be combined with operating selector switches connected to a terminal (see Page 128). Operating selector button The operating selector button makes it possible to specify a particular operating mode temporarily for a control zone. After an adjustable time period, the units switch back to the operating mode that was being carried out previously. Notice The mode of function of the operating selector button can be set. The selected operating mode can also remain active until it is switched off again by pressing the button once more. The buttons are configured as illuminated pushbuttons. They are installed in the door of the zone control panel. There are a maximum of 3 operating selector buttons for each control zone: Standby (ST) Ventilation (VE) Recirculation (REC) There is also the option of connecting external operating selector buttons to a terminal (see Page 129). Integration into the building management system The TopTronic C can be easily integrated into the building management system via a BACnet interface. A full parameter list is available on request. 1.3 Zone control panel The zone control panel is made of painted steel sheet (colour: light grey RAL 7035). In includes the following components: Operating elements in the panel door Power and control section 1 safety relay (external) 1 fresh air sensor per system (included) 1 zone controller per control zone 1 room air sensor per control zone (included) Caution Danger of electric shocks. Ensure that overcurrent protection equipment is installed on site for the power supply cable. Short circuit resistance I CW 10 ka eff Use Indoors Protection SDZ3, SDZ5 IP 66 class SZD7, SDZ8, SDZ9 IP 55 Ambient temperature 5 40 C Table M6: Technical data for the zone control panel Size Type Dimensions (W x H x D) Base height Doors 3 SDZ3 600 x 760 x 210 1 5 SDZ5 800 x 1000 x 300 1 7 SDZ7 800 x 1800 x 400 200 1 8 SDZ8 1000 x 1800 x 400 200 2 9 SDZ9 1200 x 1800 x 400 200 2 Table M7: Available sizes for the zone control panel (dimensions in mm) Location of the temperature sensors Install the fresh air sensor at least 3 m above the ground on a north-facing wall, so that it is protected from direct sunlight. Insulate the sensor from the building. Install the room air sensor at a representative position in the occupied area at a height of about 1.5 m. Its measured values must not be distorted by the presence of sources of heat or cold (machines, windows, etc.). Several averaging sensors can also be used. 126

Control system TopTronic C control system External connections Enable heating Volt-free signal that reports the heating requirement to the heat production on site Heating demand Analogue signal that reports the setpoint for the flow temperature to the heat production on site (2-10 V 0-100 C) max. 230 V AC, 6 A max. 24 V DC, 6 A AO Design of the control panels Control panels sizes 3 and 5 are configured as compact cabinets for wall installation. The cables are introduced from below through flange plates and screwed cable glands. Control panels of sizes 7 to 9 are configured for individual setup in a self-supporting design. The cables are introduced through clamping profiles in the floor panel (cable introduction into the base is possible from the left or right side or from behind). Wall mounting (SDZ3 and SDZ5) Individual setup (SDZ7 to SDZ9) GND AI Trouble input heating Alarm input signal that informs the system that the heat supply is not working 0...10 V DC Collective trouble indicator Volt-free signal for the external display of a collective alarm 24 V AC, max. 1 A Cable run Cable duct Base Fig. M5: Design of control panels Forced off (zone controller) Input signal for emergency switch-off via software control (all units in a zone): Fans off (without post operation) Dampers closed (by spring return) Recommended for emergency shut-off of the units with high priority (e.g. in the event of a fire) max. 230 V AC, 3 A max. 24 V DC, 3 A 24 V AC, max. 1 A Design for cooling For systems with indoor climate units which also have a cooling function, the components required to control the cooling circuit are also installed in the zone control panel. The system switches between heating and cooling automatically. Enable cooling Volt-free signal that reports the cooling requirement to the cold production on site Forced off (ventilation unit) Input signal for emergency switch-off via hardware control (one unit): Fans off (without post operation) Dampers closed (by spring return) Recommended for emergency shut-off of the units with highest priority (e.g. in the event of a fire) 24 V AC, max. 1 A Trouble input cooling Alarm input signal that informs the system that the cold supply is not working Table M9: Signals cold supply max. 230 V AC, 6 A max. 24 V DC, 6 A 24 V AC, max. 1 A M Table M8: External connections 127

Control system TopTronic C control system Cooling lock switch The cooling lock switch also makes it possible to block the cooling function temporarily (e.g. in the transition period). It can be installed in the door of the zone control panel or connected to a terminal. Options for the zone control panel Alarm lamp A lamp for displaying alarms is installed in the door of the zone control panel. The lamp flashes when new alarms have occurred, and it lights up if already acknowledged alarms are still present. Notice There is only 1 collective alarm lamp for each control zone. It shows the alarms of the whole system. Socket A 1-phase socket with a 2-pin circuit breaker is installed in the zone control panel. This socket serves for connecting maintenance tools. Its circuit is not cut out by the safety relay. Additional room air temperature sensor Instead of only 1 room air sensor, additional sensors are provided to determine the average value; the corresponding terminals are integrated. A maximum of 3 additional sensors are possible per control zone. Combination sensor room air quality, temperature and humidity A combination sensor is supplied instead of the room temperature sensor. It measures the relative humidity and quality (VOC content) of the room air in addition to its temperature. The sensor is installed on the wall in the occupied area, at a height of about 1.5 m. Notice Measurement of the room air humidity is a prerequisite for icing protection in applications with high extract air humidity. The use of the combination sensor enables the system to be operated without ice formation in the plate heat exchanger. External sensor values It is possible to connect external sensors to the zone controller via additional inputs (input signal: 0 10 V DC or 4 20 ma): Room temperature Room air quality Room air humidity External set values It is possible to connect set value specifications from an external system to the zone controller via additional inputs (input signal: 0 10 V DC or 4 20 ma): Room temperature Room air quality Supply and exhaust air volume flow Fresh air ratio Load shedding input The zone controller includes a digital input for load shedding by an external system. Operating selector switch on terminal (analogue) An operating mode can be specified for a control zone from an external system using an analogue operating mode signal connected to a terminal. Automatic mode according to the calendar is overridden. The operating modes are switched using different voltage levels. If there is no voltage applied, an alarm is triggered and the units switch to standby (ST). Voltage Supply and extract air handling units Supply air units Recirculation units 1.2 V DC ST ST ST 2.4 V DC REC REC REC 3.7 V DC SA REC1 REC1 5.0 V DC EA SA1 6.2 V DC VE SA2 7.5 V DC VEL 8.8 V DC AQ 10.0 V DC AUTO AUTO AUTO Table M10: Voltage levels for external switching of operating modes Notice Measurement of the room air quality is a prerequisite for demand-based ventilation. The use of the combination sensor therefore enables the system to be operated in a particularly energy-saving manner. Operating selector switch on terminal (analogue) GND AI AO 0...10 V DC Table M11: Connection of the external operating selector switch 128

Control system TopTronic C control system Operating selector switch on terminal (digital) An operating mode can be specified for a control zone from an external system using digital operating mode signals connected to a terminal. Automatic mode according to the calendar is overridden. The operating modes are switched using digital inputs. If there is no signal applied, an alarm is triggered and the units switch to standby (ST). Input Supply and extract air handling units Supply air units Recirculation units 1 ST ST ST 2 REC REC REC 3 SA REC1 REC1 4 EA SA1 5 VE SA2 6 VEL 7 AQ 8 AUTO AUTO AUTO Table M12: Digital inputs for external switching of the operating modes Operating selector switch on terminal (digital) 1 2 3 4 5 6 7 8 0...10 V DC Table M13: Connection of the external operating selector switch Operating selector button on terminal The operating selector button connected to a terminal makes it possible to specify a particular operating mode for a control zone using external illuminated pushbuttons (ST, VE or REC). Operating selector button on terminal 24 V AC Power supply and safety relay The power supply for indoor climate units is integrated in the zone control panel. The following components are installed in the panel: the necessary circuit breakers and output terminals for each unit the safety relay (external) The size of the safety relay depends on the rated current. Rated current 1) Type Design < 1 A 2) NT-2 2-pin 1 32 A NT-4/32 4-pin 33 63 A NT-4/63 4-pin 64 100 A NT-4/100 4-pin 101 125 A NT-4/125 4-pin 126 160 A NT-4/160 4-pin 161 250 A NT-4/250 4-pin 1) Rated current = nominal current consumption of all indoor climate units 2) Safety relay for zone controller (without power supply for indoor climate units) Table M15: Sizes of the safety relay Control of distributor pump(s), incl. power supply The components required for controlling and supplying power to the distributor pump(s) are installed in the zone control panel. The pumps can either be controlled via a release signal or switched directly. Type Pump Phases Output 1PSW Heat supply 1-phase max. 2 kw 1PSK Heat/cold supply (2-pipe system) 1-phase max. 2 kw 1PSB Pump heat supply and pump cold 1-phase max. 2 kw supply (4-pipe system) 3PSW Heat supply 3-phase max. 4 kw 3PSK Heat/cold supply (2-pipe system) 3-phase max. 4 kw 3PSB Pump heat supply and pump cold supply (4-pipe system) 3-phase max. 4 kw Table M16: Technical data for the pump control Table M14: Connection of the external operating selector button M 129

Control system TopTronic C control system 1.4 Control components in the units A control box is fitted at the side of the housing on each TopVent unit. The following components are installed: Unit controller In supply air units, the unit controller controls the individual unit, including the air distribution, according to the specifications of the control zone and regulates the supply air temperature using cascade control. In recirculation units, the unit controller receives all signals from the zone controller. Connection terminals for the power supply, the zone bus, actuators, sensors and peripherals Main switch (external, switches everything off except for the unit controller, the heating/cooling valve and sensors) Transformer for the unit controller and the field units Wire jumper for forced off (only for supply air units) Options Notice If the power supply for the unit controller is interrupted, frost protection and monitoring are not guaranteed. Door contact A volt-free contact can be installed on the control box for unit operation subject to a door contact switch. The TopVent unit heats in recirculation operation (Fan speed 2, Heating on) when the following conditions apply: The signal for the opened door is active. The fresh air temperature is max. 10 C (this threshold is adjustable). Door contact: Cable: 24 V AC, max. 1 A NYM 2 x 1.0 mm² max. 100 m long Pump control for mixing or injection system Instead of the diverting system, an injection or mixing circuit can also be installed in the load circuit. Please note the following: Not only the mixing valves but also the pumps in the load circuit are controlled directly by the control block. Terminals for wiring the mixing valves and the pumps in the load circuit are located in the connection box. Make sure that valves and pumps which meet the following requirements are provided on site. Requirements for mixing valves: Use 3-way mixing valves with the following flow characteristics: Equal percentage control path Linear bypass The valve authority must be 0.5. The maximum run time of the valve actuator is 45 s. The valve actuator must be continuous, i.e. the stroke changes in proportion to the control voltage (DC 2 10 V). The valve actuator must be designed with a position response (0...10 V DC or 2 10 V DC). The maximum power consumption is 20 VA. Install the valve close to the unit (max. distance 2 m). Requirements for pumps Voltage 230 V AC Current up to 4.0 A 1.5 Alarms and monitoring The TopTronic C control system monitors itself. Central alarm management records each alarm situation in the alarm list with a timestamp, priority and status. The alarms are displayed on the operator terminals and via the collective trouble indicator. Forwarding via e-mail is also possible. If there is a failure of communication, bus stations, sensor systems or supply media, each part of the system transitions to a protection mode which safeguards operation. Return temperature sensor The return temperature sensor monitors the return temperature of the heating medium. If necessary, it triggers frost pre-control at the heating valve to prevent the system possibly being shut down due to frost. 130

Control system TopTronic C control system Unit control box Zone bus Collective trouble indicator Fresh air temperature sensor System operator terminal Zone control panel M Power supply Room temperature sensor Enable heating Heating pump Trouble input heating Heating control panel Mixing valve Distributor pump Table M17: Schematic diagram for injection system Heating 131

Control system TopTronic C control system Unit control box Zone bus Power supply Heating/cooling pump Mixing valve Collective trouble indicator Fresh air temperature sensor Room temperature sensor Trouble input heating Trouble input cooling Distributor pump System operator terminal Zone control panel Cooling lock switch Enable heating Enable cooling Heating control panel Changeover valves heating/cooling Heating circuit Cooling circuit Table M18: Schematic diagram for injection system Heating and cooling in the 2-pipe system 132

Control system TopTronic C control system Unit control box Fresh air temperature sensor Cooling lock switch Zone bus Room temperature sensor Enable heating Power supply Trouble input heating Enable cooling Cooling pump Heating pump Trouble input cooling Distributor pump heating Heating control panel Heating circuit M Mixing valve cooling Distributor pump cooling Cooling circuit Mixing valve heating System operator terminal Collective trouble indicator Zone control panel Table M19: Schematic diagram for injection system Heating and cooling in the 4-pipe system 133

Control system System control for TopVent 2 System control for TopVent 2.1 System structure The system control for TopVent is a TopTronic C package solution for controlling plants comprising 1 control zone with up to 6 supply air units and 10 recirculation units. BMS 2.3 Zone control panel The zone control panel of the system control for TopVent includes the following components: 1 zone controller with operating panel 1 safety relay (external) Power and control section 1 fresh air sensor (included) 1 room air sensor (included) Caution Danger of electric shocks. Ensure that overcurrent protection equipment is installed on site for the power supply cable. Building management system (option) Zone controller with operating panel Zone bus (provided by the client) REMU unit controllers (max. 6 supply air units) RECU unit controllers (max. 10 recirculation units) Fig. M6: System structure of system control for TopVent Technical data Dimensions (W x H x D) 380 x 380 x 210 mm Design as compact cabinet for wall installation (cable introduction from below) Material Coated sheet steel (light grey RAL 7035) Use Indoors Protection class IP 66 Ambient temperature 5 40 C Power supply 1) 230 VAC Short circuit resistance I CW 10 ka eff 1) Power supply for the TopVent units provided by the client Table M20: Technical data for the zone control panel 2.2 Operation Zone controller with operating panel The zone controller with operating panel allows simple operation and monitoring of the system. It gives trained users access to all information and settings that are necessary for normal operation: Display and setting of operating modes Display of temperatures and setting of the room temperature set values Display and programming of the weekly calendar Display and handling of alarms and maintaining an alarm log Password protection External connections Enable heating Heating demand Trouble input heating Enable cooling Trouble input cooling Collective trouble indicator Forced off Cooling lock switch Changeover valves heating/cooling Operating selector switch on terminal (analogue) Operating selector button on terminal (analogue) External setpoint fresh air ratio Options Additional room temperature sensor BACnet interface for operating of the units via building management system Notice For details of external connections and options please refer to section 1 'TopTronic C control system'. 134

Control system Room temperature control with the EasyTronic EC 3 Room temperature control with the EasyTronic EC The EasyTronic EC is a room temperature controller without a timer for TopVent DHV and NHV units in terminal box design. A maximum of 10 TopVent units can be connected to 1 controller. Functions Recording the room temperature with the integrated temperature sensor Room temperature control in on/off mode: If the room temperature falls below the setpoint value, the connected TopVent units switch on. Upon reaching the setpoint value, the units switch off again. Controlling the TopVent units using a door contact switch: The connected units are switched on via door contact if the door is open (digital input). Controlling the fan speed: The required speed can be infinitely controlled. Controlling the air distribution: The blow-out direction of the air can be adjusted infinitely variably from vertical to horizontal. (This function is only for TopVent DHV units.) Pump or valve control: The EasyTronic EC provides a signal for switching a pump or a valve (digital output). Technical data Electrical supply 110 230 VAC, ±10%, 50/60 Hz Power consumption max. 1.3 W Temperature range 0...50 C Protection rating IP 30, class 2 Dimensions (W x H x D) 128 x 80 x 56 mm Installation In a 3-gang flush-mounted box or on the supplied base Table M21: Technical data EasyTronic EC Designation Voltage Cable Power supply for units 3 x 400 V AC NYM 4 x 1.5 mm² Power supply for EasyTronic EC 1 x 230 V AC NYM 2 x 1.5 mm² Fan control 0-10 / 24 V DC NYM 5 x 1.0 mm² Door contact 24 V DC NYM 2 x 1.0 mm² Control of the air distribution 0-10 V DC NYM 3 x 1.5 mm² Pump / Valve control Volt-free max. 230 V AC max. 24 V DC NYM 2 x 1.5 mm² Table M22: Cable list for on-site connections 400 VAC 400 VAC 400 VAC 400 VAC Fig. M12: EasyTronic EC room temperature controller 230 VAC 230 VAC EasyTronic EC Pump/valve Door contact TopVent DHV / NHV (max. 10) Fig. M10: Conceptual diagram EasyTronic EC Pump / Valve control Door contact Fan control Control of air distribution (DHV) TopVent DHV / NHV Fig. M11: Connection diagram M 135

Control system Room temperature control with the EasyTronic ET 4 Room temperature control with the EasyTronic ET The EasyTronic ET is a room temperature controller without a timer for TopVent HV and curtain units. The room setpoint temperature is set manually and the required fan speed is selected using a switch. The EasyTronic ET consists of the following components: Room thermostat: The required temperature is set on the room thermostat using the control knob. If the room temperature drops below the setpoint value, the TopVent units switch on. Upon reaching the setpoint value, the units switch off again. Switching device: The required fan speed can be set using the switching device (1 = low speed / 2 = high speed / 0 = off). A maximum of 10 TopVent units can be controlled with 1 EasyTronic ET. The EasyTronic does not have a signal for switching a distributor pump or heat generator. Technical data Dimensions (W x H x D) 166 x 230 x 129 mm Feed voltage 3 x 400 ±10% Frequency 50 60 Hz Series fuse 10 A Switching capacity max. 4 kw Protection rating IP 54 Ambient temperature 5 40 C Table M24: Technical data for the switching device EasyTronic ET 3 x 400 VAC TopVent HV / curtain (max. 10 units) Switching device Room thermostat Fig. M9: Conceptual drawing for EasyTronic ET Fig. M7: Room thermostat Fig. M8: Switching device Technical data Dimensions (W x H x D) 74 x 74 x 23 mm Measuring range 5 30 C Protection rating IP 30 Table M23: Technical data for the room thermostat 136

System design Content 1 Design example 138 2 Maintenance schedule 140 System design N 137

System design Design example 1 Design example Notice Use the 'HK-Select' program to design Hoval Indoor Climate Systems. You can download it free of charge on the Internet. 1.1 Heating mode Design data Geometry of the room (plan) Mounting height (= distance between floor and lower edge of the unit) Heating load Unit type in accordance with the project-specific requirements (fresh air ratio, installation location, air distribution) Design conditions heating: Temperature of the heating medium Room temperature Extract air temperature: With TopVent units, the temperature stratification in the hall is reduced to just 0.15 K/m. Calculate the extract air temperature accordingly subject to the mounting height. For units with fresh air ratio: Fresh air temperature Fresh air ratio: The fresh air ratio can be adjusted from 0% to 100%. Where Regulation 1253/2014 applies, it must be restricted to 10% in the design conditions for energy-efficiency reasons. Mounting height Check the minimum mounting height (see Table L1). Check the maximum mounting height (calculate with 'Hoval HK-Select'). Strike units which are not adequate. Minimum number a) Minimum number based on the area Calculate the minimum number using the floor space of the room and the area reached for each unit. b) Minimum number based on length x width Depending on the shape of the hall and in relation to its length and width, a certain number of units will be required. Calculate the minimum number using the maximum distances between the units themselves and also between the units and the wall (see Table L1). c) Minimum number based on the heating load Calculate the output for coverage of transmission sensible gains under the given design conditions. Use this to calculate the minimum number for the given heating load. Example 50 x 70 m 12 m 350 kw Unit type MH 60/40 C 20 C 20 + 12 x 0.15 = 21.8 C -10 C 10 % Unit size 6 Unit size 9 OK OK Calculate the minimum number according to a), b) and c) and enter it in a table. Take the highest value as the minimum quantity. Type a) b) c) MH-6/A 7 12 29 29 MH-6/B 7 12 18 18 MH-6/C 7 12 10 12 MH-9/A 4 6 16 17 MH-9/B 4 6 12 12 MH-9/C 4 6 6 6 Definitive number of units Choose the final solution from the remaining possibilities, depending on the geometry of the hall and the costs. Fresh air flow rate Calculate the installed fresh air flow rate from the air flow rate of the selected units. 6 units of MH-9/C 6 x 9000 m³/h Total fresh air flow rate: Min. fresh air flow rate: 54000 m³/h 5400 m³/h 138

System design Design example 1.2 Cooling mode Design data Geometry of the room (plan) Mounting height (= distance between floor and lower edge of the unit) Cooling load Unit type in accordance with the project-specific requirements (fresh air ratio, installation location, air distribution) Design conditions cooling: Temperature of the cooling medium Room air conditions Extract air temperature: With TopVent units, the temperature stratification in the hall is reduced to just 0.15 K/m. Calculate the extract air temperature accordingly subject to the mounting height. For units with fresh air ratio: Fresh air conditions Fresh air ratio: The fresh air ratio can be adjusted from 0% to 100%. Where Regulation 1253/2014 applies, it must be restricted to 10% in the design conditions for energy-efficiency reasons. Mounting height Check the minimum mounting height (see Table L1). Strike units which are not adequate. Minimum number a) Minimum number based on the area Calculate the minimum number using the floor space of the room and the area reached for each unit. b) Minimum number based on length x width Depending on the shape of the hall and in relation to its length and width, a certain number of units will be required. Calculate the minimum number using the maximum distances between the units themselves and also between the units and the wall (see Table L1). c) Minimum number based on the cooling load Calculate the output for coverage of transmission sensible gains under the given design conditions. Use this to calculate the minimum number for the given cooling load. Definitive number of units Choose the final solution from the remaining possibilities, depending on the geometry of the hall and the costs. Fresh air flow rate Calculate the installed fresh air flow rate from the air flow rate of the selected units. Example 40 x 60 m 6.5 m 140 kw Unit type MK 8/14 C 24 C / 50 % rh 24 + 12 x 0.15 = 25.8 C 32 C / 50% 10 % Unit size 6 OK Unit size 9 OK Calculate the minimum number according to a), b) and c) and enter it in a table. Take the highest value as the minimum quantity. Type a) b) c) MK-6/C 5 6 8 8 MK-9/C 3 4 5 5 MK-9/D 3 4 5 5 5 units of MK-9/D 5 x 9000 m³/h Total fresh air flow rate: Min. fresh air flow rate: 45000 m³/h 4500 m³/h N 139

System design Maintenance schedule 2 Maintenance schedule Activity Changing the filter Comprehensively checking function; cleaning and possibly repairing the unit Interval When the filter alarm is displayed, at least annually Annually by Hoval customer service Table N1: Maintenance schedule 140

TopVent Design Handbook Subject to technical changes. Part No. 4 216 561 Edition 06 / 2017 Hoval Aktiengesellschaft, Liechtenstein, 2011 Responsibility for energy and environment The Hoval brand is internationally known as one of the leading suppliers of indoor climate control solutions. More than 70 years of experience have given us the necessary capabilities and motivation to continuously develop exceptional solutions and technically advanced equipment. Maximising energy effi ciency and thus protecting the environment are both our commitment and our incentive. Hoval has established itself as an expert provider of intelligent heating and ventilation systems that are exported to over 50 countries worldwide. Hoval heating technology As a full range supplier Hoval helps its customers to select innovative system solutions for a wide range of energy sources, such as heat pumps, biomass, solar energy, gas, oil and district heating. Services range from small commercial to large-scale industrial projects. International Hoval Aktiengesellschaft Austrasse 70 9490 Vaduz, Liechtenstein Tel. +423 399 24 00 info.klimatechnik@hoval.com www.hoval.com United Kingdom Hoval Ltd. Northgate, Newark Nottinghamshire NG24 1JN Tel. 01636 672711 heatrecovery@hoval.co.uk www.hoval.co.uk Hoval comfort ventilation Increased comfort and more effi cient use of energy from private housing to business premises: our comfort ventilation products provide fresh, clean air for living and working space. Our innovative system for a healthy room climate uses heat and moisture recovery, while at the same time protecting energy resources and providing a healthier environment. Hoval indoor climate systems Indoor climate systems ensure top air quality and economical usability. Hoval has been installing decentralised systems for many years. The key is to use combinations of multiple air-conditioning units, even those of different types, that can be controlled separately or together as a single system. This enables Hoval to respond fl exibly to a wide range of requirements for heating, cooling and ventilation. 1