Facade Fan Coil Unit Type FVD/FVDplus

Transcription

1 Facade Fan Coil Unit Type FVD/FVDplus Floor Installation D Stuttgart, Grenzstraße (0711) , Fax +49 (0711) Internet: info@ltg -AG.de LTG Incorporated 105 Corporate Drive, Suite E Spartanburg S.C., USA +1 (864) , Fax +1 (864) Internet: info@ltg -INC.net LTG S.r.l. con socio unico Via G. Leopardi 10 I Melzo +39(02) ,Fax+39(02) Internet: ltg@ltgsrl.191.it FVD -E TP 01 (10/08)

2 Components for Room Air Technology Germany Central Office (Frankfurt) Sales area: PLZ 54, 55, 60, 63, 64, 66-69, 97 Sontraer Str. 27 D Frankfurt am Main (069) , Fax -10 E -mail: Bergmann@LTG -AG.de Central office (Herborn) Sales area: PLZ 30, 31, 34-38, 56, 57, 61, 65 Sperberweg 16 D Herborn Herr Hartmann (02772) , Fax -727 E -mail: Hartmann@LTG -AG.de Eastern office (Berlin) Sales area: PLZ 10-25, 29, 39 Eisenhutweg 51a D Berlin Herr Linke (030) , Fax -75 E -mail: Linke@LTG -AG.de Eastern office (Chemnitz) Sales area: PLZ 01-09, 98, 99 Johannes-Ebert-Straße 20 D Chemnitz Herr Schenfeld (0371) , Fax -02 E -mail: Schenfeld@LTG -AG.de Southern office Sales area: PLZ Grenzstraße 7 D Stuttgart Herr Gau (0711) , Fax -210 E -mail: Gau@LTG -AG.de Western office Sales area: PLZ 26-28, 32, 33, 40-53, Baststraße 30 D Oberhausen/Rheinl. Herr Perenz (0208) , Fax -56 E -mail: Perenz@LTG -AG.de Austria KTG Klimatechnische Gesellschaft mbh Schubertstraße 13, A Ladendorf (02575) 21089, Fax (02575) E -Mail: office@ktg -wien.com Great Britain MAP Motorised Air Products Ltd. Unit 5A, Sopwith Crescent Wickford Business Park Wickford GB -Essex SS11 8YU (01268) , Fax (01268) E -Mail: info@mapuk.com Netherlands Opticlima Systems Leeuwerikstraat 110, NL AG Ermelo (0341) , Fax (0341) E -Mail: info@opticlima.nl Poland HTK Went Sp.z.o.o. ul. Chopina 13/3, PL Krakow (012 ) , Fax (012) E -Mail: info@htk -went.pl Portugal ArGelo S. A. R. Luis Pastor de Macedo, Lote 28 B P Lisboa (21) , Fax (21) E -Mail: info@argelo.pt Slovenia Energo Plus Koprska 108 d, SLO Ljubljana (01) , Fax (01) E -Mail: info@energoplus.si Switzerland Laminair AG Kirchbergstrasse 105 Ch Burgdorf (034) , (034) E -Mail: info@laminair.ch Turkey Step Müh. Yapi Ltd. Yali Yolu Sokak, Turanli Apt. No: 24 D.1 TR Bostanci-Istanbul (0216) , Fax (0216) E -Mail: info@stepyapi.com.tr The Program for Room Air Technology Components Air diffusers for walls, floors and ceilings LTG System clean R linear diffusers Coandatrol R ceiling air diffusers Coandavent R displacement diffusers LTG chilling fans cool wave R induction units Klimavent R fan coil units Raumluft ceiling fan coil units Ventotel R facade fan coil units airflow control units labair R system Engineering services Technical services for investors, architects, engineers and plant builders during design, construction and operation of buildings. Reliable and precise data relating to the ventilation of air conditioning system are given already before realization of the project, determined by measurements, calculations, building simulations and experiments. Components for Process Air Technology Japan Toho Engineering Co. Ltd , Shimizu 3-Chome, Kita Ku Japan 462 Nagoya (052) , Fax (052) E -Mail: main@tohoeng.com The Program for Process Air Technology Components Axial -flow, centrifugal and tangential fans Collector system for: coarse and fine particle filtration, separating and compacting, compressing and humidifying. Engineering services Technical services for construction engineers and plant designers during development and operation of assembly groups, machines and plants. E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 Internet: info@ltg-ag.de Printed in Germany Ausgaben mit früherem Datum werden hiermit ungültig Technische Änderungen vorbehalten Former editions are invalid Subject to technical modifications.

3 Facade Fan Coil Unit Type FVD for floor installation with decentralized outside air supply via the facade, for heating and cooling Application The Facade Fan Coil Unit type FVD is a 4-pipe unit for the decentralized ventilation of occupied rooms (outer zones) via the facade using outside air, including cooling and heating. It is perfect for installation in false floors with an overall unit height of at least 203 mm when using floor panels (38 mm) with covering (8.5 mm) and a minimum height of 175 mm when placing the floor covering directly on the ventilation module. Since all components are below floor level, the FVD may be used in rooms with a full-surface facade glazing. Notes regarding the control: Since facade fan coil units are operated with both outside and room air some particularities will have to be considered when integrating the units in a control circuit (see installation instructions). Control strategies of standard fan coil unit controllers cannot be used without certain modifications. In any case, continuous control components will have to be used. Facade Room Air flow path FVD/direct induction Facade Fan Coil Unit, Type FVD R (picture without control valves, with water connection on the right, for demonstration purposes without ventilation module cover, inspection opening and foot traffic resistant grille) Functional Principle The centrifugal fan of the FVD sucks in outside air through a slot or opening in the facade element through the open shut-off damper of the FVD and a fine dust filter. The air is forced through a silencer and induction nozzles (to mix with room air) and passes through a 4-pipe heat exchanger with separate water circuits. The heated or cooled air is then expelled through the floor grille directly at the facade into the room (direct induction). This supply air flow mixes in summer with the warm room air, in winter with the falling cold air in front of the window (mixed air flow close to the facade). A displacement flow towards the core is created in the cooling mode by the mixed discharge flow. If the fan is isolated or in case of a power failure, the shutoff damper is closed safely through an actuator with spring return. The FVD will then serve as an underfloor convector e.g. for static heating of the room at night. Tolerances - For the data given in this brochure General Tolerances according to DIN 2768-vL apply. For the outlet grille the special tolerances given in the drawing apply. - Straightness and twist tolerances according to DIN EN Surface Finish - The surface finish was designed to meet requirements for the use in buildings - room air climate according to DIN 1946 Part 2. Other requirements on request. You will find the actual tender documentations at the end of this document. They are available in word format at your local dealership or at E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 3

4 Facade Fan Coil Unit Type FVDplus for floor installation with decentralized outside air supply via the facade, recirculating air mode, for heating and cooling Application The FVDplus has the same functions as the FVD but, additionally, includes a tangential fan used to recirculate room air and increase capacity in the fresh-air mode. Facade fan coil unit type FVDplus-4 -A R (picture without control valves, with water connection on the right, for demonstration purposes without ventilation module cover and without foot traffic resistant grille) Functional Principle The FVDplus allows for three different operating modes: 1. operation with fresh air intake only (the same as FVD) 2. operation as a recirculating air unit without outside air intake 3. operation with fresh air intake and recirculating air. 1. In the fresh air only mode the centrifugal fan of the FVDplus draws in outside air through a slot or opening in the facade element via the FVD s open shut-off damper and a fine filter. The air is passed through a silencer and is discharged via nozzles, to mix thoroughly, with room air before passing the 4 pipe heat exchanger with separate water circuits. 2. In the recirculating air only mode a noiseless fivespeed tangential fan draws room air through the ventilation grille. This air passes through the unit s heat exchanger and is reintroduced into the room over the fan s entire width. 3. In the combination mode the advantages of the above two modes are combined. The fresh air flow is supplemented by recirculated room air thereby increasing the heating cooling capacity of the unit. In any of the three modes the cooled or heated air is expelled vertically upwards through the floor grille close to the facade. This supply air flow mixes in summer with the hot room air, and in winter with the falling cold air in front of the window (creating a mixing zone close to the facade). In the cooling mode, the mixed air flow creates a displacement flow towards the room core. If the fan is isolated or in case of a power failure, the shutoff damper is closed safely through an actuator with spring return. The FVDplus will then serve as an underfloor convector e.g. for static heating of the room at night. Room Facade Air flow path FVDplus E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 4

5 Facade Fan Coil Unit Type FVD/FVDplus - Advantages Advantages Direct Induction The heat exchanger heats/cools room air and outside air which results in: increased heating and cooling output due to increased flow rate better protection against freezing better thermal comfort effective use of free cooling excellent room air flow with air diffusion close to the facade and mixed/displacement air flow. FVDplus: High performance due to mixed in room air and recirculating air fan Fast air conditioning due to increased output. Fast cooling/heating of completely cooled rooms. Ideal supplement to slow concrete core activation. Recirculating air flow rate independent of the outside air flow rate, to be selected by the user or cascade controlled. Cooling and heating also without outside air, air conditioning possible even with critical wind conditions. outside air T 32 _C room air T Raum 26 _C supply air outside air T 32 _C room air T Raum 26 _C supply air T WE 29 _C outside air through induction nozzles T KWVL 18 _C outside air through induction nozzles T WE 27,5 _C T KWVL 17 _C Direct induction principle Principle when mixing in room air Advantages Facade Fan Coil Unit Type FVD High output and frost protection - Designed for high capacity output - Easy frost protection possible through direct induction/mixing in room air Decentralized outside air supply - The outside air flow rate may be adjusted individually and according to requirement. - The occupants in the room may control the outside air flow through set values. - No plant room investment/space required for central supply air. Aesthetic design - Slim grille directly on the facade. - Continuous installation of the grille and the facade module. Low-noise operation - Low sound power level. - Good sound insulation to protect from outside noises such as traffic. Low energy consumption - Short air conveying distances, low pressure losses. - Use of a highly efficient EC motor in the centrifugal fan. - Low water-side pressure losses in the heat exchanger. Strict separation of the water circuits - 4-pipe heat exchanger with separate cooling and heating register. - Use of standard controllers possible. Flexible use thanks to modular design - Low installation height. - Dividing the system in two modules allows to meet any project requirement. - Length and width of the facade module may be changed to adapt the unit to other grid dimensions or the caloric output. - In case of a change of use, the units may easily be retrofitted. Quick and easy maintenance - Excellent accessibility of the filter, the shut-off damper, and the actuator by simply lifting the foot traffic resistant grille and one maintenance cover. - Easy cleaning of the facade module by lifting the grille and the heat exchanger. - Good accessibility of the fan and the silencer by lifting the floor panels and the ventilation module cover. The fan motor may be detached and removed from above. The silencer may be completely removed for cleaning the air paths. - For the FVDplus also excellent accessibility of the cross flow fan. Easy and clean installation - Separate installation of the air conditioner, the facade, and the false floor. The supporting feet may be adjusted from the outside without need to open the unit. Thus, contamination during installation is minimized. E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 5

6 Facade Fan Coil Unit Type FVD/FVDplus - Installation Example The Innovation Company Room Facade FVD Installation example: Continuous grille along the facade, facade fan coil unit FVD and aluminum roller grille Facade fan coil unit FVD after installation with cutout floor boards If the look of a continuous grille along the facade is required units are screw connected using matching black coated distance sheets. In case of end pieces and if the spacing is more than 400 mm supports will have to be used for stabilization. The LTG aluminum roller grille also allows for production of cutouts for columns and mitre edges. To meet any esthetic requirement we offer 3 grille types: 1. Stainless steel grille Facade fan coil unit FVD after installation with stainless steel grille 2. LTG aluminum roller grille 3. LTG aluminum grille E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 6

7 Facade Fan Coil Unit Type FVD - Dimensions Lateral view 18 A B 48 Front view Feet may be completely retracted Water connections to match the specific project 611 Dimensions A B FVD FVD Unit dimensions are set to match the specific project. Therefore, this dimensional sketch serves as an example only. Top view Isometric view E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 7

8 Facade Fan Coil Unit Type FVD - Technical Data Technical data type FVD (various flow rates) V [m#/h] L A18 [db(a)] L wa [db(a)] Q k 1 Q ksens 1 w ok / p w [kg/h]/[kpa] Q 2 h 1615 w oh / p w [kg/h]/[kpa] Q hst / / P el Technical data type FVD (various flow rates) V [m#/h] L A18 [db(a)] L wa [db(a)] Q k 1 Q ksens 1 w ok / p w [kg/h]/[kpa] Q 2 h 1670 w oh / p w [kg/h]/[kpa] Q hst / / The given data refer to the unit including fine filter F7, free-suction operation without external pressure loss. 1 Water supply temperature: 17 C, intake air temperature: 32 C, non-condensing operation (about 40% relative humidity), room air temperature: 26 C. 2 Water supply temperature: 75 C, intake air temperature: -12 C, room air temperature: 22 C. P el V - L A18 - L wa - Q k - flow rate ( 10%) sound pressure level with 18 m 2 Sabine room absorption sound power level ( 3dB) (without intake grille) cooling capacity Q ksens - w ok - p w - Q h - w oh - Q hst - P el - sensible cooling capacity standard water flow rate at cooling capacity* water-side pressure loss heating capacity standard water flow rate at heating capacity* static heating capacity electric power consumption ( 20%) * correction for other flow rates see page 9/10 E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 8

9 Facade Fan Coil Unit Type FVD - Selection Due to the many parameters decisive for a decentralized unit s output we will state one example only. Further selections are possible using a special LTG program available through Example for: Type FVD Grille width 300 Outside air flow rate 120 m 3 /h Room air temperature 26 _C Water supply temperature 17 _C Nominal water volume 200 kg/h Cooling capacity with different flow rates Cooling capacity Qk Overall cooling capacity Room-effective output 50_C Intake air temperature 0 40_C Intake air temperature 32_C Intake air temperature Flow rate in % of the nominal flow rate Water-side pressure loss of the cooling register with different flow rates Water-side pressure loss pw [kpa] Flow rate w [kg/h] E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 9

10 Facade Fan Coil Unit Type FVD - Selection Due to the many parameters decisive for a decentralized unit s output we will state one example only. Further selections are possible using a special LTG program available through. Example for: Type FVD Grille width 300 Outside air flow rate 120 m 3 /h Room air temperature 22 _C Water supply temperature 75 _C Nominal water volume 100 kg/h Heating capacity with different flow rates 4500 Heating capacity Qh Overall heating capacity Room-effective output _C Intake air temperature _C Intake air temperature - 20_C Intake air temperature Flow rate in % of the nominal flow rate 200 Water-side pressure loss of the heating register with different flow rates Water -side pressure loss pw [kpa] Flow rate w [kg/h] E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 10

11 Facade Fan Coil Unit Type FVD - Electrical Connection Electrical Connection The unit is provided with connecting cables equipped with connector sleeves. Electrical connection is made, on site, via a terminal box mounted to the unit (protection IP66). Available are 3 outside air flow rates which may be triggered directly via a control line. This control line has an outside air flow-dependent voltage of up to mains potential. Activation in groups of up to 3 units is possible (using the same phase). An error message may be applied to the terminal box. The message will be displayed in case one of the following conditions occurs: - the fan does not run, irrespective of load applied - antifreeze is active (heat exchanger temperature < 10 _C) - set flow rate is not achieved within 120 seconds. Connection of a diffused air temperature sensor is optional. Facade fan coil unit terminal box On -site wiring temp - 1 PWM Tacho X7-2 Party Day Night Antifreeze 5 Belimo X6 Temp U5 Y μ PE N N L X5 F2 F1 220/24 V, 6,0 VA F1 = 32 ma, tr F2 = 1,0 A, tr L PE N Sign Error Mains Speeds Error Power supply conn. 230 V Line:3x0,75mm 2 Outside air flow rates I - III Line:4x0,75mm 2 Electrical isolation required Connection via floating contacts Fan error message Line:2x0,5mm 2 E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 11

12 Facade Fan Coil Unit Type FVDplus - Dimensions 305 Lateral view Front view 155 Feet may be completely retracted Water connections to match the specific project Top view Unit dimensions are set to match the specific project. Therefore, this dimensional sketch serves as an example only. Isometric view E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 12

13 Facade Fan Coil Unit Type FVDplus - Technical Data Model size pipe system - Cooling and heating with recirculating air only n [-] V [m#/h] L wa [db(a)] Q k 1/ t [W/K] Q k 1 w ok / p w [kg/h]/[kpa] Q h 1/ t [W/K] Q h 2 w oh / p w [kg/h]/[kpa] I II III / / IV V Model size pipe system - Cooling and heating with outside air only V [m#/h] L A18 [db(a)] L wa [db(a)] Q k 1 w ok / p w [kg/h]/[kpa] Q 2 h 820 w oh / p w [kg/h]/[kpa] / / P el 16 P el 5 Model size pipe system - Cooling and heating Example of a combination of 120 m 3 /h outside air and recirculating air n [-] L A18 [db(a)] L wa [db(a)] Q k 1 w ok / p w [kg/h]/[kpa] Q 2 h 1740 I II III / IV V w oh / p w [kg/h]/[kpa] 100 / 3.4 Acoustic data including outside air filter F7 and free-suction operation without external pressure loss. Data apply to the unit with intake and outlet grille, including simulated facade. Data based on VDMA Standard Sheet (draft). 1 Water supply temperature: 17 C, room air temperature: 26 C, intake air temperature: 32 C. 2 Water supply temperature: 50 C, room air temperature: 22 C, intake air temperature: -12 C. n - V - L A18 - L wa - Q k - t - speed flow rate ( 10%) pressure level with 18 m 2 Sabine room absorption sound power level ( 3dB) (without intake grille) cooling capacity temperature difference between induction air temperature before entering the heat exchanger and water supply w ok - p w - Q h - w oh - P el - standard water flow rate at cooling capacity* water-side pressure loss heating capacity standard water flow rate at heating capacity* electric power consumption ( 20%) * correction for other flow rates see page 14/15 E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 13

14 Facade Fan Coil Unit Type FVDplus - Selection Due to the many parameters decisive for a decentralized unit s output we will state one example only. Further selections are possible on request. Example for type FVDplus Grille width 300 Outside air flow rate 120 m 3 /h Room air temperature 26 _C Water supply temperature 17 _C Nominal water volume 200 kg/h Speed level II Cooling capacity with different flow rates Cooling capacity Qk Overall cooling capacity Room-effective output 50_C Intake air temp. 0 40_C Intake air temp. 32_C Intake air temp Water volume in % of the nominal water volume Water-side pressure loss of the cooling register with different flow rates 25 Water-side pressure loss pw [kpa] Water volume w [kg/h] E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 14

15 Facade Fan Coil Unit Type FVDplus - Selection Due to the many parameters decisive for a decentralized unit s output we will state one example only. Further selections are possible on request. Example for type FVDplus Grille width 300 Outside air flow rate 120 m 3 /h Room air temperature 22 _C Water supply temperature 75 _C Nominal water volume 100 kg/h Speed level II Heating capacity with different flow rates Heating capacity Qh Overall heating capacity Room-effective output _C Intake air temperature _C Intake air temperature - 20_C Intake air temperature Flow rate in % of the nominal flow rate 150 Water-side pressure loss of the heating register with different flow rates 15 Water-side pressure loss pw [kpa] Flow rate w [kg/h] E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 15

16 Facade Fan Coil Unit Type FVD/ FVDplus - Control Specifications The Innovation Company When integrating the facade fan coil unit type FVD/ FVDplus into a closed-loop control circuit the following particuliarities will have to be considered: In the decentralized facade fan coil unit type FVD/ FVDplus, both outside air and room air are routed through the heat exchanger. As outside air temperature variations can be significantly higher than intake temperatures in standard recirculating air units, standard fan coil unit control strategies cannot be used without making certain modifications. Room Temperature Control Room temperature control must be cascade controlled in a way to ensure that the required room temperature in the occupied zone is achieved. In any case, this will require the use of continuous control valve actuators or alternatively, three-position actuators. Wind Pressure Control / Supply Air Flow Rate Maintaining the required outside air flow rate as a function of applied wind pressures at the suction inlet will be ensured by a controller integrated in the fan coil unit s power electronics. No external access to this controller is provided. Three connectable flow rates represent the customer specified set flow rates (e.g. 90 m 3 /h m 3 /h m 3 /h). If no flow rate is chosen, the unit will shut the outside air damper and stop the fan. The required outside air flow rate may be selected/switched by an external controller chosing among three different set flow rates. With no voltage supplied, the outside air damper will be shut in the spring return mode. Frost Protection Since the heat exchanger in decentralized A/C units can handle outside air there is risk that the heat exchanger might freeze in the case of LPHW/LTHW failure or fan motor failure. Such failure may be detected before causing any damage to the heat exchanger by monitoring the diffused air temperature. An optional digital anti-freeze sensor monitoring the diffused air temperature will shut off the fan if the temperature drops below the limit of 10 _C and close the outside air damper. This function is not invoked, in both heating & cooling mode, if the unit is working correctly. The digital anti-freeze sensor will not protect from simultaneous controller failure. Therefore, maximum security is achieved if an additional automatic frost protection controller with capillary tube sensor is used in terms of a redundant system. If the temperature at the sensor rises above 15 _C, the unit will be put back into operation. An external controller may have additional access via an optional additional diffused air temperature sensor, so that further error messages may be displayed and the outside air dampers be closed (fan - set flow rate 0). Diffused Air Temperature Limiting In order to optimize comfort in the occupied zone the diffused air temperature will have to be monitored and its lower limit be restricted through suitable valve settings. This limit should not be more than 8 K below room temperature. However, this will also limit the available cooling capacity. Starting In case of low outside air temperatures, pre-heated water must flow though the heat exchanger when starting the unit and opening the outside air damper. Nocturnal Cooling Using a suitable control strategy, the facade fan coil unit might also be used to cool the building structure if nocturnal temperatures are low (but not falling below 10 _C). Minimum Air Volume To minimize building energy expense, the outside air volume should be reduced to the minimum flow necessary for occupancy. E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 16

17 Facade Fan Coil Unit Type FVD/FVDplus - System Components The Innovation Company Description Usually one unit every other grid is sufficient to satisfy the requirements of a 2 module room with 2 people or a 3 module room with 3 people Many architects, however, require the grille to be installed in a a continuous format. Module FVD-W has been specifically designed for this purpose. This module not only takes the grille but may be converted in various steps whenever required. Advantages Flexibility and comfort - Typical reasons for changing modules: An existing/new tenant might require more cooling capacity, removing office partition walls to convert several small offices into one large office room or a complete office refit. The additional modules may serve to either provide an increased cooling capacity or to retrofit meeting rooms with more outside air without the need to replace the empty tray or the outside air unit. The required supplement modules are simply added and installed. Easy control - Use of the operating unit can be continued even when modules have been supplemented. The second module can be switched synchronously to the first. No new wiring or additional control functions are required. Base Level A unit in every second module with 120 m 3 /h (fresh air for 3 persons) and empty tray. Solution for standard offices. Valves for the FVD-A may be integrated in the FVD-W and are, thus, more easily accessible than in the false floor. FVD-A/FVDplus-A FVD-W Facade Heat exchanger FVD -A standard unit - tra y - grille - 4 -pipe heat exchanger - fan, sound absorber - outside air connection, damper, filter Empty tray module - for building module without FVD -A unit - tra y - grille suitable for retrofitting with module FVD -L. Conversion stage 1 Retrofitting static heating Solution e.g. for corner rooms in buildings. FVD -A/FVDplus -A FVD-H Heat exchanger Heat exchanger Module FVD -H - activation of the adjacent module - extension of an empty tray with a heat exchanger to double the static heating capacity. Facade for dimensions and technical data see next pages Conversion stage 2 Increase the cooling capacity. A unit in every second module with 120 m 3 /h (fresh air for 3 persons). Solution e.g. for corner rooms in buildings. FVD-AL/FVDplus-AL FVD-L Facade Heat exchanger Heat exchanger Module FVD -L - enlargement of a tray module FVD -W + a standard unit FVD -A to obtain a unit with increased cooling capacity - module FVD -L will be supplied with air via the FVD -A unit - heat exchanger is inserted in the tray Conversion stage 3 Double fresh air + cooling capacity. per module if there are two facade openings (fresh air for 6 persons). Solution e.g. for meeting rooms. FVD -A/FVDplus -A Heat exchanger FVD-A/FVDplusA Heat exchanger Facade Conversion of the empty tray to obtain a second FVD-A standard unit - 4 -pipe heat exchanger - fan, sound absorber - outside air connection, damper, filter E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 17

18 Heating Convector Type FVD-H Application The heating convector type FVD-H is a 2-pipe underfloor convector for static heating. The heating convector has been designed for installation in false floors. Required minimum false floor height is 180 mm. Functional Principle Cooled room air enters the grille positioned on top of the unit. Natural convection ensures draught -free flow of heated air into the room. The heat exchanger has been optimized specifically for low water volumes and high caloric outputs. Control Control is realized via standard radiator valves. The heat exchanger is provided with a smooth tube connection for direct connection of flexible hoses via quick release coupling. Dimensions Technical data Type FVD-H 1000 (different water inlet temperatures) t VL [_C] Q h w oh / p w [kg/h]/[kpa] 100 / 4 At 20 _C room temperature (intake temperature) Water flow rate 100 kg/h Front view ,5 Lateral wiew ,5 (158) Feet may be completely retracted 36 Top view 305 Water connections to match the specific project Unit dimensions are set to match the specific project. Therefore, this dimensional sketch serves as an example only. Isometric view E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 18

19 Heating Convector Type FVD-H Capacity with different flow rates Capacity in % of the nominal capacity Q Flow rate w [kg/h] Water-side pressure loss with different flow rates 50 Water -side pressure loss pw [kpa] Flow rate w [kg/h] E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 19

20 Facade Fan Coil Unit Type FVD/FVDplus Installation The compact design with a unit depth of 511 mm and a grille width of 200 mm or 611 mm with a grille with of 300 mm (FVDplus grill width 300 mm only), respectively, allows for installation of the unit between floor supports. Precise alignment of the unit is achieved through height adjustable feet. The valve chamber for connection of the control valves is located on the side opposite the intake opening side. Feed-throughs for the water connection tubes are also on the side opposite the intake opening, in the facade module s back panel. The upper edge of the unit and thus of the traffic resistant ventilation grille is to be installed flush to the prefabricated floor. In the ventilation module area, floor panels may be placed on the ventilation module cover using insulating washers. Fassade Special versions / Accessories - Control valves with either continuous or 3 point actuators. - Flexible insulated hoses with quick and safe release plug-in connections to the heat exchanger and integrated air-release valves. - Solid ventilation grille, foot traffic resistant without the use of any additional cross members, with fins parallel to the facade. According to requirement, either steel with an abrasionproof coating or stainless steel, inserted in the facade module from above. The grille is available in a variable length, independent of the unit, e.g. matching the grid dimension. The use of grilles of other brands requires s express approval in order to ensure a troubleless operation of the entire system. - Suitable filter cartridges, fine filter F7. - Antifreeze controller to monitor outside temperatures. It may be set to a selectable air temperature, e.g. 5_Cin winter, at which the fan is cut off and the outside air damper is closed in case of a hot water supply failure to avoid freezing of the heat exchanger. - Actuators with spring return to safely close the outside air shut-off damper in case of a power failure Facade Fan Coil Unit Type FVD - Installation on the facade with floor panels and floor covering. Facade Fan Coil Unit Type FVD - Replacement of filter E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 20

21 Facade Fan Coil Unit Type FVD/FVDplus - Nomenclature FVD A R / D / 1R / E / S outside air outside air + recirc. air FVD FVDplus 2-pipe unit 2 4-pipe unit 4 standard unit standard unit for use of L module tray module retrofitting static heating retrofitting output increase A AL W H L construction length 1200 grille width 200 (FVDplus 300 only) 300 water connection side right R left L straightway 3-point valve D 3-way 3-point valve 3 without edge profile for distance sheet OR 1 edge profile 1R 2 edge profiles 2R grille stainless steel aluminium roller grille 20 mm steel, coated aluminum, anodised E AR SB AE housing, coated black housing, coated in special color S SO E Grenzstraße 7 D Stuttgart +49 (0711) Fax -720 FVD -E-TP (10/08) Former editions are invalid Subject to technical modifications. 21

22 Specification and Schedule of Prices Facade Fan Coil Unit (according to design patent DE ) Base Unit FVD-A Edition / page 1 Qty. Description Unit price Total price General Description Facade fan coil unit for installation in false floors for a decentralized ventilation of occupied rooms via the facade, as well as for heating and cooling outside air with added room air for: - increased caloric output. - high thermal comfort due to a temperature increase of the diffused air. - lower risk of freezing and condensation. Data and Classification according to VDMA Standard Sheet (draft) Nominal heating capacity of the unit Nominal room heating capacity Grille width [mm] Nominal outside air flow rate (+/- 8 %) [m 3 /h] Outside air temperature [ C] (temperature of the outside air sucked in by the unit) Room air temperature [ C] Hot water supply temperature [ C] Hot water return temperature [ C] Nominal heating capacity of the unit (- 5 %) Nominal room heating capacity Nominal water flow rate [kg/h] Nominal pressure loss [kpa] Recommended use with a water supply temperature of 50 C (e.g. for use of a heat pump in central return air) Hot water supply temperature [ C] Hot water return temperature [ C] Nominal heating capacity of the unit (- 5 %) Nominal room heating capacity Nominal water flow rate [kg/h] Nominal pressure loss [kpa] 6 2 Nominal cooling capacity of the unit Nominal room cooling capacity Nominal outside air flow rate (+/- 8 %) [m 3 /h] Outside air temperature [ C] (temperature of the outside air sucked in by the unit) Room air temperature [ C] Cold water supply temperature [ C] Cold water return temperature [ C] Nominal cooling capacity of the unit (- 5 %) Nominal room cooling capacity Nominal water flow rate [kg/h] Nominal pressure loss [kpa] Free intake, free diffusion Technical data apply for free suction on the intake opening and grille on the outlet. -2-, Grenzstraße 7, D Stuttgart, Tel.: +49 / 711 / , Fax.: +49 / 711 / Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.

23 Specification and Schedule of Prices Facade Fan Coil Unit (according to design patent DE ) Base Unit FVD-A Edition / page 2 Qty. Description Unit price Total price Nominal outside air flow Nominal outside air flow (+/- 8 %) [m 3 /h] Sound power level Sound power level (+/-3 db) including F7 filter (free suction and diffusion): 120 m 3 /h (nominal outside air flow) [db(a)] m 3 /h [db(a)] m 3 /h [db(a)] 32 Sound reduction index Weighted sound reduction index of the unit with open outside air damper related to the suction area A. A [m 2 ] 0,018 Rw, [C tr ] [db] 28, [-7] Wind impact Meets the highest requirements of Unit Category III for external static pressure differences +/-200 Pa. Compensation of the filter pressure loss through integrated flow rate control. Maximum external pressure to be compensated with nominal outside air flow rate: Nominal outside air flow rate (+/- 20 %) [m 3 /h] 120 Positive wind pressure [Pa] Negative wind pressure [Pa] -300 Power consumption Low noise centrifugal fan with energy saving, highly efficient, infinitely variable EC motor for outside air flow rates of m 3 /h. 120 m 3 /h (nominal outside air flow) m 3 /h m 3 /h 9 El. power consumption max 100 Required back-up fuse [A] 10 Fan connection [V] , Grenzstraße 7, D Stuttgart, Tel.: +49 / 711 / , Fax.: +49 / 711 / Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.

24 Specification and Schedule of Prices Facade Fan Coil Unit (according to design patent DE ) Base Unit FVD-A Edition / page 3 Qty. Description Unit price Total price Air filter for outside air and exhaust air The supply air unit is equipped with an outside air filter F7 (including a warning sign for the direction of air, filter type, inspection interval and date of last filter change) - without exhaust air filter. Filters made entirely from synthetic composite materials Supply air diffusers Facade fan coil unit with mixed-in room air for high thermal comfort thanks to an increased temperature of the diffused air, and supply air diffuser with mixed displacement air flow. DIN 1946 Part 2 requirements are met for the nominal outside air flow. Outside air damper / Exit air damper Internal air tightness of the unit In case of a power failure the outside air damper is shut automatically by an actuator with spring return. Leakage air flow Meets: Referencerelated to: permeabilitx for 100 Pa: damper dimension Class 4 Q100 = 0,13 m 3 /hm Leakage air flow of the outside air damper when shut: wind pressure Pa [m 3 /h] < 1 wind pressure Pa [m 3 /h] < 1 Internal leakage air flow [%] < 5 Condensate tray The unit is provided with a condensate tray without drainage and slope for temporary condensate formation. Continuous condensate formation is not provided for and covered. Sanitation The upper material of the lining e.g. on the sound absorber and the 13 mm thick heat insulation is made of abrasion resistant glass fleece. Cut edges are protected against fibre release. The sound absorber sliding block inside the ventilation module may easily be removed to clean air conveying components. The ventilation module cover is easy to remove for inspection using a siphon. Filter, actuator, outside air damper, heat exchanger, and condensate tray are easily accessible inside the facade module underneath the supply air grille. -4-, Grenzstraße 7, D Stuttgart, Tel.: +49 / 711 / , Fax.: +49 / 711 / Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.

25 Specification and Schedule of Prices Facade Fan Coil Unit (according to design patent DE ) Base Unit FVD-A Edition / page 4 Qty. Description Unit price Total price Material Unit with adjustable feet. The self supporting housing is made of galvanized steel, visible parts powder coated in black (other colors on request), a 4 pipe heat exchanger with copper tubes and aluminum fins for cooling and heating. Heat exchanger connection with DN = 12 mm smooth copper tube for connection of flexible hoses with use of a quick release coupling. Water connection side always opposite the outside air intake opening side. Facade module with integrated condensate tray with inserted traffic resistant 300 mm / 200 mm wide and LLLL mm long ventilation grille of stainless steel or, alternatively, aluminum. The ventilation module is suitable for taking floor panels. It meets Load Class 2 requirements (standard office areas nominal load 3000 N) according to DIN EN False Floors or Load Class 3 according to the application guideline for false floors. Dimensions and Dimensional Limits FVD-A-LLLL-BBB-X A = module; L = length or size in mm B = grille width facade module in mm X = L for left, R for right version. Suitable for installation in false floors. Modular construction of the unit, splitted in facade module and ventilation module to meet any facade geometry requirements. Unit feet height adjustable from the outside with a possibility for complete retraction without need to open the unit. Unit height [mm] 155 When placing a floor panel (38-40 mm thick) with floor covering (8-10 mm thick) on top: Min. overall height [mm] 203 (to upper edge ventilation grille) When placing a floor covering (8-10 mm thick) directly onto the ventilation module: Min. overall height [mm] 175 (to upper edge ventilation grille) -5-, Grenzstraße 7, D Stuttgart, Tel.: +49 / 711 / , Fax.: +49 / 711 / Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.

26 Specification and Schedule of Prices Facade Fan Coil Unit (according to design patent DE ) Base Unit FVD-A Edition / page 5 Qty. Description Unit price Total price Operating Overpressures Admissible water side operating pressure 12 bar. Heat exchanger approved for a maximum water pressure of 15 bar. Corrosion Protection The unit housing is made of galvanized steel, visible parts powder coated. Ventilation grille of stainless steel or, alternatively, aluminum. Manufacturer: Series: Facade Fan Coil Unit Type: FVD-A Accessories/special version (optional, at extra charge): o o o o o o o o Stainless steel grille Aluminum - Roller grille Prepared for installation in line Differently formed side panel to take a connecting sheet and give the grille a continuous look Special version FVD-AL prepared for adding an FVD-L module Control With optional diffused air temperature sensor for thermal comfort and easy control of the diffused air temperature, e.g. PT 1000 with 1 m cord and plug (e.g. white) for connection to the room controller. Antifreeze The unit may be equipped internally (optional) with a frost protection and a digital diffused air temperature sensor. By mixing in room air the sensor may detect a frost hazard with diffused air temperatures as high as 10 C. The unit shuts off if the diffused air temperature drops below 10 C and restarts if it rises above 15 C. Alternatively, an independent automatic frost controller may be integrated. Straight-way valve with continuous actuator (0 10 V) cooling Straight-way valve with continuous actuator (0 10 V) heating, Grenzstraße 7, D Stuttgart, Tel.: +49 / 711 / , Fax.: +49 / 711 / Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.

27 Specification and Schedule of Prices Facade Fan Coil Unit (according to design patent DE ) Base Unit FVDplus-A Edition / page 1 Qty. Description General Description Facade fan coil unit with integrated recirculating air fan for installation in false floors for a decentralized ventilation of occupied rooms via the facade, and for heating and cooling outside air with added room air. room air is added in the outside air only mode through induction, with the recirculating air fan operating the added room air volume is significantly increased. The adding of room air results in: - increased caloric output. - high thermal comfort due to a temperat. increase of the diffused air. - lower risk of freezing and condensation. Data and Classification according to VDMA Standard Sheet (draft) Nominal heating capacity of the unit 300 Nominal room heating capacity Grille width [mm] 300 Nominal recirculating air level [-] II Nominal outside air flow (+/- 8 %) [m 3 /h] 120 Outside air temperature [ C] -12 (temperature of the outside air sucked in by the unit) Room air temperature [ C] 22 Hot water supply temperature [ C] 75 Hot water return temperature [ C] 51,5 Nominal heating capacity of the unit (- 5 %) 2744 Nominal room heating capacity 1800 Nominal water flow rate [kg/h] 100 Nominal pressure loss [kpa] 3,4 Nominal cooling capacity of the unit 300 Nominal room cooling capacity Nominal outside air flow rate (+/- 8 %) [m 3 /h] 120 Outside air temperature [ C] 32 (temperature of the outside air sucked in by the unit) Room air temperature [ C] 26 Cold water supply temperature [ C] 17 Cold water return temperature [ C] 20,3 Nominal cooling capacity of the unit (- 5 %) 770 Nominal room cooling capacity 530 Nominal water mass flow rate [kg/h] 200 Nominal pressure loss [kpa] 6,2 Free intake, free diffusion Technical data apply for free suction on the intake opening and grille on the outlet. -2- Unit price Total price, Grenzstraße 7, D Stuttgart, Tel.: +49 / 711 / , Fax.: +49 / 711 / Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.

28 Specification and Schedule of Prices Facade Fan Coil Unit (according to design patent DE ) Base Unit FVDplus-A Edition / page 2 Qty. Description Nominal outside air flow 300 Nominal outside air flow (+/- 8 %) [m 3 /h] 120 Sound power level Outside air fan Sound power level (+/- 3dB) including F7 filter (free suction and diffusion): 120 m 3 /h (nominal outside air flow) [db(a)] m 3 /h [db(a)] m 3 /h [db(a)] 32 Recirculating air fan Sound power level (+/- 3 db): Speed level I [db(a)] 29 Speed level II [db(a)] 33 Speed level III [db(a)] 40 Speed level IV [db(a)] 45 Speed level V [db(a)] 51 Sound reduction index Weighted sound reduction index of the unit with open outside air damper related to the suction area A. A [m 2 ] 0,018 Rw, [C tr ] [db] 28, [-7] Wind impact Meets the highest requirements of Unit Category III for external static pressure differences of +/- 200 Pa. Compensation of the filter pressure loss through integrated flow rate control. Maximum external pressure to be compensated with nominal outside air flow rate: Nominal outside air flow rate (+/- 20 %) [m 3 /h] 120 Positive wind pressure [Pa] Negative wind pressure [Pa] -300 Unit price Total price -3-, Grenzstraße 7, D Stuttgart, Tel.: +49 / 711 / , Fax.: +49 / 711 / Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.

29 Specification and Schedule of Prices Facade Fan Coil Unit (according to design patent DE ) Base Unit FVDplus-A Edition / page 3 Qty. Power consumption Description Outside air fan Low noise centrifugal fan with energy saving, highly efficient, infinitely variable EC motor for outside air flow rates of m 3 /h. 120 m 3 /h (nominal outside air flow) 9 90 m 3 /h 7 60 m 3 /h 5 El. power consumption max. 100 Required back up fuse [A] 10 Fan connection [V] 230 Recirculating air fan Low noise cross flow fan with energy saving, highly efficient 5-speed motor. Speed I 16 Speed II 17,5 Speed III 19,5 Speed IV 22 Speed V 27 El. power consumption max. 40 Required back up fuse [A] 0,2 Fan connection [V] 230 Air filter for outside air and exhaust air The supply air unit is equipped with an outside air filter F7 (including a warning sign for the direction of air, filter type, inspection interval and date of last filter change) - without exhaust air filter. Filters made entirely from synthetic composite materials Supply air diffusers Facade fan coil unit with mixed-in room air for high thermal comfort thanks to an increased temperature of the diffused air, and supply air diffuser with mixed displacement air flow. DIN 1946 Part 2 requirements are met for the nominal outside air flow. Unit price Total price -4-, Grenzstraße 7, D Stuttgart, Tel.: +49 / 711 / , Fax.: +49 / 711 / Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.