VIESMANN. VITOCAL Air/water heat pumps. Technical guide. VITOCAL 300-A Type AWC-I and AW-O. VITOCAL 350-A Type AWH-I and AWH-O

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1 VIESMANN VITOCAL Air/water heat pumps Technical guide VITOCAL 300-A Type AWC-I and AW-O Up to 60 C flow temperature Modulating output range 3 to 9 kw Reversible air source heat pump with electric drive for heating/cooling and for heating domestic hot water in mono-mode, mono-energetic or dual mode heating systems Active cooling mode in conjunction with fan convectors Type AWC-I for internal installation Type AW-O for external installation VITOCAL 350-A Type AWH-I and AWH-O Up to 65 C flow temperature Rated heating output 10.6 to 18.5 kw Air source heat pump with electric drive for heating and domestic hot water heating in mono-mode, mono-energetic or dual mode heating systems Type AWH-I for internal installation Type AWH-O for external installation 11/2009

2 Index Index 1. Principles 1.1 Heat yield... 5 Yielding heat from the ambient air... 5 Operating modes... 6 Drying buildings (higher heat demand)... 7 Coefficient of performance and seasonal performance factor Noise development... 8 Sound... 8 Sound power level and sound pressure level... 9 Sound reflection and sound pressure level (directivity Q) Propagation of sound in buildings Vitocal 300-A 2.1 Product description Delivered condition Specification Specification Sound transmission data Dimensions, type AWC-I Dimensions, type AW-O Output diagrams Vitocal 350-A 3.1 Product description Delivered condition Specification Specification Dimensions, type AWH-I Dimensions, type AWH-O Output diagrams DHW cylinder 4.1 Vitocell 100-V, type CVW Vitocell 300-B, type EVB for Vitocal 300-A Installation accessories 5.1 Heating circuit (secondary circuit) for external installation Secondary circuit circulation pump Hydraulic connection Hydraulic connection set Wall seal flange Wall seal ring Pipe liner Installation accessories for the Vitocal 300-A 6.1 Air circuit (primary circuit), type AWC-I Wall outlet set Air ducts, straight Air duct bend Wall outlet, straight Wall outlet intake side for appliance connection Wall outlet discharge side for appliance connection Weather grille Silencer hood Air circuit (primary circuit) type AW-O Sound insulation set Heating circuit (secondary circuit) type AWC-I Instantaneous heating water heater Heating circuit (secondary circuit) type AW-O Safety equipment block Three-way diverter valve (R 1") Instantaneous heating water heater DHW heating with Vitocell 100-V, type CVW Solar heat exchanger set Booster heater EHE Impressed current anode DHW heating with Vitocell 300-B, type EVB Immersion heater EHE Safety equipment to DIN Cooling Fan convectors Vitoclima 200-C VIESMANN VITOCAL

3 Index (cont.) 7. Installation accessories for the Vitocal 350-A 7.1 Air circuit (primary circuit), type AWH-I Wall outlet set Air ducts, straight Air duct bend Wall outlet, straight Weather grille Silencer hood Heating circuit (secondary circuit) general Safety equipment block Three-way diverter valve (R 1") way diverter valve (R 1¼") Heating circuit (secondary circuit) type AWH-I Instantaneous heating water heater (set 1) Instantaneous heating water heater (set 2) Circulation pump (secondary circuit) Heating circuit (secondary circuit) type AWH-O Instantaneous heating water heater Circulation pump (secondary circuit) DHW heating with Vitocell 100-V, type CVW, type AWH-I/AWH-O Solar heat exchanger set Booster heater EHE Impressed current anode DHW heating with primary store system type AWH-I 114, 120 and type AWH-O 114, way motorised ball valve (DN 32) Cylinder primary pump Plate heat exchanger Vitotrans Design information Vitocal 300-A 8.1 Internal installation of the Vitocal 300-A, type AWC-I Information regarding positioning Installation room requirements Air routing in the installation room Electrical connections Noise development Hydraulic conditions for designing the secondary circuit External installation Vitocal 300-A, type AW-O Frost protection Information regarding positioning Minimum clearances Foundations Wind loads Condensate drain of the heat exchanger Cables and hydraulic pipes Electrical connections Noise development Hydraulic conditions for designing the secondary circuit Design information Vitocal 350-A 9.1 Internal installation of the Vitocal 350-A, type AWH-I Information regarding positioning Installation room requirements Air routing in the installation room Electrical connections Hydraulic conditions for designing the secondary circuit External installation Vitocal 350-A, type AWH-O Frost protection Information regarding positioning Minimum clearances Foundations Wind loads Condensate drain of the heat exchanger Cables and hydraulic pipes Electrical connections Hydraulic conditions for designing the secondary circuit Design information 10.1 Power supply and tariffs Application procedure Installation location of the control unit VITOCAL VIESMANN 3

4 Index (cont.) 10.3 Sizing the heat pump Mono-mode operation Mono-energetic operation Supplement for DHW heating Supplement for setback mode Determining the dual mode point Heating circuit and heat distribution Sizing of the heating water buffer cylinder Vitocal 300-A Vitocal 350-A DHW connection Example with Vitocell 100-V, type CVW Safety valve DHW cylinder selection Primary store system System examples Cooling mode (only Vitocal 300-A) Operating modes Cooling with an underfloor heating system Cooling with fan convectors Vitoclima 200-C (accessory) Heat pump control units 11.1 Accessories for the WPR 300 heat pump control unit Connecting cables Contactor relay Contact temperature sensor as system flow temperature sensor Cylinder temperature sensor Thermostat for controlling the swimming pool temperature Contact temperature sensor Mixer motor Extension kit for one heating circuit with mixer with integral mixer motor Extension kit for one heating circuit with mixer for separate mixer motor Immersion thermostat Contact thermostat Information regarding the Vitotrol Vitotrol Room temperature sensor External extension H KM BUS distributor Vitocom 100, type GSM Vitocom 200, type GP Vitocom 300, type FA5, FI2, GP2 and LAN LON communication module LON connecting cable for data exchange between control units Extension of the connecting cable Terminator Appendix 12.1 Regulations and Directives Glossary Overview - engineering steps for a heat pump system Calculating the seasonal performance factor Keyword index VIESMANN VITOCAL

5 Principles 1.1 Heat yield Yielding heat from the ambient air Today, air source heat pumps can be operated all year round, just like ground and groundwater heat pumps. In buildings constructed according to the low energy house standard, mono-energetic operation is possible, i.e. operation in conjunction with an electric immersion heater, for example an instantaneous heating water heater. In air source heat pumps, the amount of heat that can be extracted from the ambient air is defined by the design and size of the device. An integral fan routes the required air volume via air ducts to the evaporator. The evaporator transfers the heating energy from the air to the heat pump circuit. Taking into consideration the required amount of energy and flow temperature, the heat pumps Vitocal 300-A/350-A can also be operated down to 20 ºC in mono-mode, i.e. as sole heat source in a heating system. Even at cold air temperatures in winter, the Vitocal 350-A achieves a maximum heating water flow temperature of 65 ºC. Versions of the air source heat pumps Vitocal 300-A/350-A are available for both internal and external installation. The different types of heat pumps are also suitable for installation in areas where the air has a high salt content. 1 Internal installation E C B F G K A KW A Heat pump installed internally B Extract air duct C Ventilation air duct E Low temperature central heating F DHW cylinder G Heating circuit distributor K Heat pump control unit Where heat pumps are installed internally, the ventilation and extract air apertures in the building must be arranged in such a way that no "air short circuit" can be generated. VITOCAL VIESMANN 5

6 Principles (cont.) External installation 1 A E H K L G D A Heat pump installed externally D Heating water buffer cylinder E Low temperature central heating G Hydraulic connection set A hydraulic connection set (accessories), which is available in different lengths, is required for connection to the heating system. Connecting cables (accessories) are required for the communication between the heat pump and the control unit that is installed inside the building. H Connecting cables K Heat pump control unit L Instantaneous heating water heater If an instantaneous heating water heater (accessories) is used, it must be installed inside the building. Operating modes The operating mode of heat pumps depends largely on the selected or existing heat distribution system. Subject to the individual model, Viessmann heat pumps reach a flow temperature of up to 65 ºC. At higher flow temperatures or at very low outside temperatures an additional heat source (mono-energetic or dual mode operation) may be required to cover the heat load. In a new build, any heat distribution system can usually be selected. However, high seasonal performance factors can only be achieved in heat pumps in conjunction with a heat distribution system with low flow temperatures (max. 35 C). In typical system configurations, the heating output of the heat pump is designed for approx. 70 to 85 % of the maximum required heat load of the building (in accordance with EN 12831). The heat pump covers approx. 92 to 98 % of the annual heat load. Mono-mode operation In mono-mode operation, the heat pump alone covers the entire heat load of a building to EN This operating mode requires that the heat distribution system is designed for a flow temperature below the max. flow temperature of the heat pump. When sizing the heat pump, allowances must be made to cover power- OFF periods and special tariffs provided by the power supply utility. Dual mode operation In dual mode operation, the heat pump system is supplemented during heating operation by an additional heat source, e.g. an oil/gas boiler. This heat source is controlled by the heat pump control unit. Mono-energetic operation Dual mode operation, where the additional heat source and the compressor are operated electrically. An additional heat source could be an instantaneous heating water heater in the secondary circuit. 6 VIESMANN VITOCAL

7 Principles (cont.) Cover ratio in mono-energetic operation Cover ratio of dual mode operation Proportion of coverage provided by the he as a % of the annual heating load Heat pump proportion of maximum output (DIN EN 12831) in % Cover ratio of the heat pump in % of the annual heat load (heating only) of a standardised domestic building, subject to the heat pump heating output in mono-energetic operation Due to the low investment costs for the heat pump, compared to monomode operation, operating a heat pump in mono-energetic mode offers economic advantages, particularly in new builds. Dual mode parallel operation Subject to the outside temperature and heat load, the heat pump control unit starts the second heat source in addition to the heat pump. In typical system configurations, the heating output of the heat pump is designed for approx. 50 to 70 % of the maximum required heat load of the building in accordance with DIN EN The heat pump covers approx. 85 to 92 % of the annual heat load. Dual mode alternative operation Above a certain outside temperature (dual mode temperature), the heat pump covers the entire heat supply of the building. Below the dual mode temperature, the heat pump switches off and the additional heat source (oil/gas boiler) takes over the sole heat provision for the building. The changeover between the heat pump and additional heat source is controlled by the heat pump control unit. The dual mode alternative operating mode is particularly suitable for existing buildings with conventional heat distribution and transfer systems (radiators). Coverage by the heat pump as a % of the annual heating load Heat pump proportion of the maximum output (DIN EN 12831) in % Cover ratio of the heat pump in % of the annual heat load (heating only) of a standardised domestic building, subject to the heat pump heating output and the selected operating mode. A Dual mode parallel operation B Dual mode alternative operation Due to the lower investment costs for the entire heat pump system, the dual mode operation is particularly suitable for existing boiler systems in renovated buildings. With dual mode parallel operation, the heat source (ground) must be sized, due to the longer running times (compared to dual mode alternative operation) so it can cover the entire output demand of the building. Power supply tariffs Most power supply utilities offer special tariffs to enable the cost-effective operation of heat pumps. Providing these special tariffs enables the power supply utility to temporarily interrupt the power supply to heat pumps during peak times. In mono mode operation, the power supply may be blocked for a maximum of 3 x 2 hours within a 24-hour period.in underfloor heating systems, the power-off periods have no noticeable effect on the room temperature due to system inertia. With other systems, power-off periods can be bridged by using heating water buffer cylinders. The power supply to dual mode heat pump systems can be blocked for a maximum of 1110 hours within the heating season. During such times, the additional heat source can meet the entire heat demand of the building. The ON periods between two power-off periods must not be shorter than the previous power-off period. 1 There are no special tariffs available for uninterrupted power supply. In this case, the heat pump power consumption is billed together with the domestic or commercial power consumption. Drying buildings (higher heat demand) Subject to construction (e.g. monolithic), new buildings contain large amounts of water held in tile or cement screeds, plaster finish etc. This bound moisture must be evaporated through heating to prevent damage to the building. This requires a higher heat demand compared to the conventional heating of a building. The heat pump with the primary source is not designed for the higher heat demand required in such cases. This demand must be covered by drying equipment provided on site or by an additional instantaneous heating water heater (accessory). VITOCAL VIESMANN 7

8 Principles (cont.) 1 Screed drying Top covers (such as tiles, parquet etc.) permit only minor residual moisture in the screed prior to their application. Screed drying also requires a higher heat demand. Air/water and brine/ water heat pumps cover this higher heat demand through a booster heater designed for screed drying, e.g. an instantaneous heating water heater. In water/water heat pumps, it is generally sufficient to increase the pump rate to cover the higher heat demand. Coefficient of performance and seasonal performance factor To assess the efficiency of the electrically operated compression heat pumps, the EN standard specifies the coefficient of performance and performance factor parameters. Coefficient of performance The coefficient of performance is the ratio of the current heating output to the effective power consumption of the appliance. = P H P E P H Heat (W) per unit of time transferred by the heat pump to the heating water P E Average power consumption of the appliance within a specific period, incl. power consumption for control unit, compressor, fuel supply equipment and defrosting (W) Modern heat pumps have a coefficient of performance between 3.5 and 5.5, i.e. a coefficient of performance 4 means that four times more heat is available than the electrical energy consumed. The vast majority of the heating energy originates from the heat source (air, ground, groundwater). Operating point The coefficient of performance is measured at fixed operating points. The operating point is specified by the inlet temperature of the heat source (air A, brine B, water W) in the heat pump and the heating water outlet temperature (secondary circuit flow temperature). Example: Air/water heat pumps A2/W35: Air intake temperature 2 C, heating water outlet temperature 35 C Brine/water heat pumps B0/W35: Brine inlet temperature 0 C, heating water outlet temperature 35 C Water/water heat pumps W10/W35: Water inlet temperature 10 C, heating water outlet temperature 35 C The lower the temperature differential between the inlet and the outlet temperature, the higher the coefficient of performance. To increase the coefficient of performance, it is best to opt for the lowest possible flow temperature, e.g. 35 ºC, with an underfloor heating system, as the inlet temperature is subject to the ambient conditions. Seasonal performance factor The seasonal performance factor β is the ratio of the annual volume of heat provided by the heat pump system to the overall electrical power drawn by the heat pump system over the same period. This includes the amounts of power used by pumps, control units etc. Q HP W EL β = Q HP W EL The amount of heat (kwh) delivered by the heat pump over the course of a year The total electrical power (kwh) supplied to the heat pump system during a year 1.2 Noise development Sound Human beings are capable of hearing sounds in the pressure range from Pa (hearing threshold) to 20 Pa (1 to 1 million). The pain threshold is at around 60 Pa. Changes in air pressure are perceived provided they take place at a rate of between 20 and 20,000 times per second (20 Hz to 20,000 Hz). 8 VIESMANN VITOCAL

9 Principles (cont.) Sound source Sound level in db(a) Sound pressure in μpa Perception Silence 0 to to 63 Inaudible Ticking of a watch, quiet bedroom Very quiet Very quiet garden, quiet air conditioning Very quiet House or flat in a quiet neighbourhood Quiet Gentle stream Quiet Normal speaking volume Loud Loud speaking volume, office noise Loud Intensive traffic noise Very loud Heavy-duty truck Very loud Car horn at a distance of 5 m Very loud 1 Structure-borne noise, liquid-borne noise Mechanical vibrations present in equipment, such as machine and building components as well as in liquids, are transmitted through them and radiated out by them at different points as airborne noise. Airborne noise Sound sources (equipment in which vibrations are present) create mechanical vibrations in the air that propagate in wave form and are audible to the human ear at different levels. A Structure-borne noise B Airborne noise Sound power level and sound pressure level A Source of sound (heat pump) Emission site Measured variable: Sound power level L W B Location of incoming sound emission Immission site Measured variable: Sound pressure level L P Sound power level L W This describes the entire sound emissions in all directions emanating from the heat pump. It does not depend on the surrounding conditions (reflections) and is a value that can be used for direct comparisons of sound sources (heat pumps). Sound pressure level L P The sound pressure level is a measure to assist orientation regarding the volume of noise perceived by the ear at a specific location. The sound pressure level is largely defined by the distance and the characteristics of the surroundings and is thus dependent upon the measuring location (often at a distance of 1 m). Standard measuring microphones measure the sound pressure directly. The sound pressure level is the variable that is used to assess imissions from individual systems. VITOCAL VIESMANN 9

10 Principles (cont.) Sound reflection and sound pressure level (directivity Q) 1 The sound pressure level increases exponentially with the number of vertical neighbouring surfaces (e.g. walls) in comparison to the value for floorstanding installation (Q = directivity). Q=8: Heat pump or air inlet/outlet (for indoor installation) on one of the external walls of the house, next to a projecting wall corner Q = 2 Q = 4 Q = 8 Q Directivity Q=8 Q=2: Freestanding external installation of the heat pump Q=2 The following table shows the extent to which the sound pressure level L P changes according to the directivity Q and the distance to the device (in relation to the sound power level L W measured directly at the device or at the air outlet). The values listed in the table were calculated according to the following formula: L = L W + 10 log Q 4 π r² Q=4: Heat pump or air inlet/outlet (for indoor installation) on one of the walls of the house L = Sound level at the receiver L W = Sound power level at the sound source Q = Directivity r = Distance between the receiver and the sound source Q=4 Directivity Q Distance from the sound source in m Sound pressure level L P in relation to the sound power level L W measured at the device/outlet in db(a) 2 * In practice, actual values may differ from those shown here due to sound reflection or sound absorption as a result of local conditions. For example, the situations described by Q=4 and Q=8 often only give an inaccurate picture of the actual conditions at the emission site. *1 For floorstanding external installation only. 10 VIESMANN VITOCAL

11 Principles (cont.) Propagation of sound in buildings In buildings, sound generally results from the transmission of structureborne noise via the floors and walls. The sound emissions from light wells frequently not only lead to disturbances around the building but also inside the owner's property. With poor boundary conditions, sound immissions can travel through the windows into the house. Inside the house, there is a risk of airborne noise being transmitted via the staircase or via the cellar ceiling. 1 Sound transmission paths A Heat pump B Structure-borne noise C Airborne noise D Light well Standard values for sound pressure level according to TA Lärm [Germany] (outside the building) Area/object Standard immission value (sound pressure level) in db(a) During the day At night Area with a mix of commercial installations and domestic properties where neither commercial installations nor domestic properties are dominant Areas with predominantly domestic properties Area with only domestic properties Domestic properties that are structurally connected to the heat pump system VITOCAL VIESMANN 11

12 Vitocal 300-A 2.1 Product description A Evaporator B Fan C Terminal box D Hermetically sealed, output regulated digital scroll compressor E Condenser 2 Output control in heating mode 3 to 9 kw, in cooling mode 3 to 9.4 kw. High COP (COP = Coefficient of Performance) to EN 14511: 3.8 ((air 2 ºC/water 35 ºC), 4.3 (air 7 ºC/water 35 ºC). Maximum flow temperature: up to 60 ºC at an outside temperature of 5 ºC. Low operating noise through quiet radial fan and reduced fan speed during night operation. Efficient defrosting through circuit reversal. Heat pump control unit with remote control and monitoring. Suitable for internal and external installation. Cooling in conjunction with fan convectors. Convenient for applying for subsidies: with integral energy statement. Delivered condition Vitocal 300-A, type AWC-I (for internal installation) Reversible air source heat pump with a heating output of 3 to 9 kw and a cooling capacity of 3 to 9.4 kw. Heat pump with compact dimensions, electronic starting current limiter and epoxy-coated casing (colour: Vitosilver). Low noise and vibration emissions through multiple vibration-mounted, digital, output regulated Compliant scroll compressor for a maximum flow temperature of up to 60 C at an air temperature of +5 C. With electronic expansion valve for highest possible COP. Height-adjustable feet. 12 VIESMANN VITOCAL

13 Vitocal 300-A (cont.) Coated evaporator fins ensure corrosion resistance where air has a high salt content. CFC-free refrigerant (R407 C). Stainless steel plate heat exchanger (1,4401/1,4301) for heat transfer to the heating system. Circuit reversal defrost system with genuine on-demand defrosting. Integral circulation pump (VIRS 15/7-3) for the heating circuit, DHW/central heating 3-way diverter valve, expansion vessel (10 l) and safety assembly, as well as a slot to integrate an electric instantaneous heating water heater (accessory) and integral control panel with builtin phase monitoring. Weather-compensated, digital heat pump control unit WPR 300 for wall mounting (the required connecting cables are not part of the standard delivery of the heat pump (accessories)). Vitocal 300-A, type AW-O (for external installation) Reversible air source heat pump with a heating output of 3 to 9 kw and a cooling capacity of 3 to 8.5 kw. Heat pump with compact dimensions and electronic starting current limiter. Suitable for external installation through weatherproof casing with polyester powder coating (colour: Vitosilver). The required hydraulic connection lines are not part of the standard delivery of the heat pump (accessories). Low noise and vibration emissions through multiple vibration-mounted, regulated, digital Compliant scroll compressor with a maximum flow temperature of 60 C at an air temperature of +5 C. With electronic expansion valve for highest possible COP. Height-adjustable feet. Coated evaporator fins ensure corrosion resistance where air has a high salt content. CFC-free refrigerant (R407 C). Stainless steel plate heat exchanger (1,4401/1,4301) for heat transfer to the heating system. Circuit reversal defrost system with genuine on-demand defrosting. Integral safety assembly. With integral control panel. Secondary circuit flow temperature sensor inclusive copper pipe section, 28 x 1 mm with sensor mounting sleeve, for easy integration into the flow line. Weather-compensated, digital heat pump control unit WPR 300 for wall mounting (the required connecting cables are not part of the standard delivery of the heat pump (accessories)). Vitocal 300-A, type AW-O Silent (for external installation) As type AW-O, but with additional sound insulation set for a reduced sound power level. Weather-compensated heat pump control unit WPR 300 Digital heat pump control unit for wall mounting. With integral energy calculation in conjunction with the RCD system of the heat pump. For one heating circuit without mixer and two heating circuits with mixer. With cylinder temperature control for one DHW cylinder. For the control of an additional heat source in dual mode parallel operation (e.g. oil/ gas boiler) and an instantaneous heating water heater. Cascading and swimming pool water heating possible (accessories required). Easy operation with user prompts and fault display in plain text. With diagnostic system and central fault message output. Remote monitoring/transfer with Vitocom 100/200/300. An outside temperature sensor, flow and return temperature sensors plus sensors for the primary inlet and outlet are part of the standard delivery. Order the necessary cables for the heat pump separately (accessories). Accessories required (order separately) Cables for connecting the heat pump and the control unit (5, 15 and 30 m long), see page 98. Vitocal 300-A type overview Subject to the rated voltage of the heat pump, the Vitocal 300-A is available in two different versions, which can be identified by their type description as follows: Rated voltage Installation Type description Heat pump Heat pump control unit 400 V 230 V internal AWC-I external AW-O 230 V 230 V internal AWC-I-M external AW-O-M The 230 V versions are only available in some countries. Unless stated otherwise, all details specified in this technical guide for the 400 V appliances (type AWC-I/AW-O) also apply to the 230 V appliances (type AWC-I-M/AW-O-M). 2 VITOCAL VIESMANN 13

14 Vitocal 300-A (cont.) 2.2 Specification Specification 2 Vitocal 300-A, 400 V appliances Type AWC-I AW-O AW-O (Silent) Heating output data at 100 % to EN (A2/W35 C, spread 5 K) Rated heating output kw 9.0 Power consumption kw 2.37 Coefficient of performance (COP) 3.8 Output control kw 3 to 9.0 Heating output data at 100 % to EN 255 (A2/W35 C, spread 10 K) Rated heating output kw 9.4 Power consumption kw 2.33 Coefficient of performance (COP) 4.0 Output control kw 3 to 9.4 Cooling capacity data at 100 % to EN (A27/W7 C, spread 5 K) Rated cooling capacity kw 8.6 Power consumption kw 2.76 Performance factor EER 3.12 Output control kw 3 to 8.6 Cooling capacity data at 100 % to EN (A35/W18 C, spread 5 K) Rated cooling capacity kw 9.4 Power consumption kw 3.43 Performance factor EER 2.74 Output control kw 3 to 9.4 Primary circuit (air) Fan rating W 30 to 180 Air volume m 3 /h 3300 Max. permiss. pressure drop (on ventilation air and extract air side) Pa 32 Min. air temperature C -20 Max. air temperature C 35 Proportion defrost time/runtime % 3 to 5 Secondary circuit (heating water) Capacity litres 3.5 Minimum flow rate (always maintain) l/h 1550 Pressure drop (with connection pipes, standard delivery) mbar 50 Max. flow temperature (at 5 K spread) at -20 C intake temperature C 35 at -5 C intake temperature C 50 Electrical values heat pump Rated voltage 3/N/PE 400 V/50 Hz Max. rated current A 6.9 Starting current (with electronic starting current limiter) A 14.0 Start-up current (with stalled armature) A 46.0 Fuse protection A 3 x Z 16 Fan protection 6.3 A H slow IP rating IP 21 IP 24 IP 24 Control circuit rated voltage 230 V / 50 Hz Control circuit protection 6.3 A H (slow) Refrigerant circuit Refrigerant R 407 C Fill volume kg 5.2 Compressor Type Hermetically sealed digital scroll with bypass Dimensions Total length mm Total width mm Total height mm Permiss. operating pressure bar 3 Connections Heating flow and return R 1½" 1¼" 1¼" Condensate hose (Ø internal/external) mm 25/32 Weight Total weight kg Vitocal 300-A, 230 V appliances Type AWC-I-M AW-O-M AW-O-M (Silent) Heating output data at 100 % to EN (A2/W35 C, spread 5 K) Rated heating output kw 8.6 Power consumption kw 2.54 Coefficient of performance (COP) 3.4 Output control kw 3 to VIESMANN VITOCAL

15 Vitocal 300-A (cont.) Vitocal 300-A, 230 V appliances Type AWC-I-M AW-O-M AW-O-M (Silent) Heating output data at 100 % to EN 255 (A2/W35 C, spread 10 K) Rated heating output kw 9.2 Power consumption kw 2.4 Coefficient of performance (COP) 3.8 Output control kw 3 to 9.2 Cooling capacity data at 100 % to EN (A27/W7 C, spread 5 K) Rated cooling capacity kw 8.6 Power consumption kw 2.76 Performance factor EER 3.12 Output control kw 3 to 8.6 Cooling capacity data at 100 % to EN (A35/W18 C, spread 5 K) Rated cooling capacity kw 9.4 Power consumption kw 3.43 Performance factor EER 2.74 Output control kw 3 to 9.4 Primary circuit (air) Fan rating W 30 to 180 Air volume m 3 /h 3300 Max. permiss. pressure drop (on ventilation air and extract air side) Pa 32 Min. air temperature C -20 Max. air temperature C 35 Proportion defrost time/runtime % 3 to 5 Secondary circuit (heating water) Capacity litres 3.5 Minimum flow rate (always maintain) l/h 1550 Pressure drop (with connection pipes, standard delivery) mbar 50 Max. flow temperature (at 5 K spread) at -20 C intake temperature C 35 at -5 C intake temperature C 50 Electrical values heat pump Rated voltage 1/N/PE 230 V/50 Hz Max. rated current A 29 Starting current (with electronic starting current limiter) A < 34 Start-up current (with stalled armature) A 97 Fuse protection A Z 25 Fan protection 6.3 A H slow IP rating IP 21 IP 24 IP 24 Control circuit rated voltage 230 V / 50 Hz Control circuit protection 6.3 A H (slow) Refrigerant circuit Refrigerant R 407 C Fill volume kg 5.2 Compressor Type Hermetically sealed digital scroll with bypass Dimensions Total length mm Total width mm Total height mm Permiss. operating pressure bar 3 Connections Heating flow and return R 1½" 1¼" 1¼" Condensate hose (Ø internal/external) mm 25/32 Weight Total weight kg Sound transmission data Vitocal 300-A Type AWC-I (for corner installation, see page 59) in the installation external room without sound insulation set AW-O with sound insulation set (Silent version) Sound power level Weighted total sound power level at A 12 C (±3 K)/W 55 C (±5 K) at 80 to 100 % heating output db(a) at 50 to 79 % heating output db(a) at 30 to 49 % heating output db(a) VITOCAL VIESMANN 15

16 Vitocal 300-A (cont.) Test of the total sound power level with reference to DIN EN ISO / DIN EN ISO , accuracy class 2 Dimensions, type AWC-I TV KO HV A HR TV KO HV HR B C 770 KO D D A B C D Cable entry Hydraulic connections Air intake Air discharge (optionally on the l.h. or r.h. side) HR Heating water return HV Heating water flow KO Condensate drain TV Heating water flow for DHW heating The hydraulic lines and condensate drain can be routed out of the heat pump to the left or right. 16 VIESMANN VITOCAL

17 Vitocal 300-A (cont.) Dimensions, type AW-O A A The diagram shows Vitocal 300-A, type AW-O Silent. Silencer hoods are available as accessories for Vitocal 300-A, type AW-O standard. A Silencer hoods VITOCAL VIESMANN 17

18 Vitocal 300-A (cont.) Output diagrams The COP data in the tables and diagrams were calculated with reference to DIN EN Vitocal 300-A, 400 V C C 60 C C 6 35 C C Heating output in kw A 4 B Air intake temperature in C C 45 C 35 C C Coefficient of performance ε (COP) Air intake temperature in C A Heating output B Power consumption C Heating water flow temperatures T HV C C Heating output data Operating point W C A C Heating output kw Power consumption kw Coefficient of performance (COP) Cooling capacity data Operating point W C 18 7 A C Cooling capacity kw Power consumption kw Performance factor EER VIESMANN VITOCAL

19 Vitocal 300-A (cont.) Vitocal 300-A, 230 V C C 60 C C 6 35 C C Heating output in kw A 4 B Air intake temperature in C 35 C C C 45 C Coefficient of performance ε (COP) Air intake temperature in C A Heating output B Power consumption C Heating water flow temperatures T HV 60 C C 35 2 Heating output data Operating point W C A C Heating output kw Power consumption kw Coefficient of performance (COP) Cooling capacity data Operating point W C 18 7 A C Cooling capacity kw Power consumption kw Performance factor EER VITOCAL VIESMANN 19

20 Vitocal 350-A 3.1 Product description A Silencer hood, intake side B Evaporator C Fan D Silencer hood, discharge side on the right E Condenser F Hermetically sealed EVI Compliant scroll compressor G EVI vapour injection, heat exchanger H Electronic expansion valve K Silencer hood, discharge side on the left 3 Particularly suitable for modernisation (also for existing radiator systems) through 65 C flow temperature, even at cold outside temperatures in winter. DHW temperature up to 55 C. Low operating costs through high COP (COP = Coefficient of Performance) of up to 3.5 according to EN (air 2 ºC/water 35 ºC). High efficiency all the year round at any operating point through the innovative RCD system (Refrigerant Cycle Diagnostic System) in conjunction with the electronic bi-flow expansion valve (EEV). Low operating noise through radial fan, sound-optimised appliance design and night mode with reduced fan speed. New heat pump control unit with telecontrol and remote monitoring enables connection to the Vitocom. External or internal installation with matching accessories. More output through integral cascade function for up to four appliances. Convenient for applying for subsidies: with integral energy statement. Delivered condition Vitocal 350-A, type AWH-I (for internal installation) Compact high temperature air source heat pump in three different output stages up to 18.5 kw. With electronic starting current limiter. Low noise and low vibrations through multiple vibration-mounted refrigerant circuit based on the 3D principle. The regulated EVI (Enhanced Vapour Injection) enables heating circuit flow temperatures of up to 65 C. With electronic expansion valve and RCD system (Refrigerant Cycle Diagnostic System) for highest possible Coefficient of Performance (COP) at all operating points. Connection piece for installation of secondary pump and instantaneous heating water heater (accessories). Weather-compensated, digital heat pump control unit WPR 300 for wall mounting (the required connecting cables are not part of the standard delivery of the heat pump (accessories)). Epoxy-coated casing, colour Vitosilver. Vitocal 350-A, type AWH-O (for external installation) Compact high temperature air source heat pump in three different output stages up to 18.5 kw. Suitable for external installation through weatherproof casing with polyester powder coating (the required hydraulic connection lines are not part of the standard delivery of the heat pump (accessories)). With electronic starting current limiter. Low noise and low vibrations through multiple vibration-mounted refrigerant circuit based on the 3D principle. The regulated EVI (Enhanced Vapour Injection) enables heating circuit flow temperatures of up to 65 C. With electronic expansion valve and RCD system (Refrigerant Cycle Diagnostic System) for highest possible Coefficient of Performance (COP) at all operating points. With anchor plate (pack) for high wind loads. Weather-compensated, digital heat pump control unit WPR 300 for wall mounting (the required connecting cables are not part of the standard delivery of the heat pump (accessories)). Colour: Vitosilver. 20 VIESMANN VITOCAL

21 Vitocal 350-A (cont.) Weather-compensated heat pump control unit WPR 300 Digital heat pump control unit for wall mounting. With integral energy calculation in conjunction with the RCD system of the heat pump. For one heating circuit without mixer and two heating circuits with mixer. With cylinder temperature control for one DHW cylinder. For the control of an additional heat source in dual mode parallel operation (e.g. oil/ gas boiler) and an instantaneous heating water heater. Cascading and swimming pool water heating possible (accessories required). Easy operation with user prompts and fault display in plain text. With diagnostic system and central fault message output. Remote monitoring/transfer with Vitocom 100/200/300. An outside temperature sensor, flow and return temperature sensors plus sensors for the primary inlet and outlet are part of the standard delivery. Order the necessary cables for the heat pump separately (accessories). Accessories required (order separately) Cables for connecting the heat pump and the control unit (5, 15 and 30 m long), see page 98. Vitocal 350-A type overview Subject to the rated voltage of the heat pump, the Vitocal 350-A with 11 kw output is available in two different versions, which can be identified by their type description as follows: Output stage Rated voltage Installation Type description Heat pump Heat pump control unit 11 kw 400 V 230 V internal AWH-I 110 external AWH-O V 230 V internal AWH-I-M 110 external AWH-O-M kw 400 V 230 V internal AWH-I 114 external AWH-O kw 400 V 230 V internal AWH-I-M 120 external AWH-O-M The 230 V appliances are only available in some countries. Unless stated otherwise, all details specified in this technical guide for the 400 V appliances (type AWH-I 110/AWH-O 110) also apply to the 230 V appliances (type AWH-I-M 110/ AWH-O-M 110). VITOCAL VIESMANN 21

22 Vitocal 350-A (cont.) 3.2 Specification Specification 3 Vitocal 350-A, 400 V appliances Type AWH-I AWH-O Heating output data at 100 % to EN (A2/W35 C, spread 5 K) Rated heating output kw Power consumption kw Coefficient of performance (COP) Heating output data at 100 % to EN (A7/W35 C, spread 5 K) Rated heating output kw Power consumption kw Coefficient of performance (COP) Primary circuit (air) Fan rating W Air volume m 3 /h Max. permiss. pressure drop (on ventilation air and extract air side) Pa Min. air temperature C -20 Max. air temperature C 35 Proportion defrost time/runtime % 2 to 5 Secondary circuit (heating water) Capacity litres Minimum flow rate (always maintain) l/h Pressure drop (with connection pipes, standard delivery) mbar Max. flow temperature (at 5 K spread) at -20 C intake temperature C 55 at -10 C intake temperature C 65 Electrical values heat pump Rated voltage 3/N/PE 400 V/50 Hz Max. rated current A Starting current (with electronic starting current limiter) A 30.0 Start-up current (with stalled armature) A 70.0 Fuse protection A 3 x Z 16 3 x Z 20 3 x Z 16 3 x Z 20 Fan protection 6.3 A H slow IP rating IP 20 IP 24 Control circuit rated voltage 1/N/PE 230 V/50 Hz Control circuit protection 6.3 A H (slow) Refrigerant circuit Refrigerant R 407 C Fill volume kg Compressor Type Hermetically sealed scroll compressor with injection Dimensions Total length mm Total width mm Total height mm Permiss. operating pressure bar 3 Connections Heating flow and return G 1½" 1¼" Condensate hose (Ø internal/external) mm 25/32 25/32 Weight Total weight kg Vitocal 350-A, 230 V appliances Type AWH-I-M 110 AWH-O-M 110 Heating output data at 100 % to EN (A2/W35 C, spread 5 K) Rated heating output kw 10.8 Power consumption kw 3.3 Coefficient of performance (COP) 3.3 Heating output data at 100 % to EN (A7/W35 C, spread 5 K) Rated heating output kw 13.0 Power consumption kw 3.4 Coefficient of performance (COP) 3.8 Primary circuit (air) Fan rating W 110 Air volume m 3 /h 3500 Max. permiss. pressure drop (on ventilation air and extract air side) Pa 37 Min. air temperature C -20 Max. air temperature C 35 Proportion defrost time/runtime % 2 to 5 Secondary circuit (heating water) 22 VIESMANN VITOCAL

23 Vitocal 350-A (cont.) Vitocal 350-A, 230 V appliances Type AWH-I-M 110 AWH-O-M 110 Capacity litres 5.0 Minimum flow rate (always maintain) l/h 920 Pressure drop (with connection pipes, standard delivery) mbar 20 Max. flow temperature (at 5 K spread) at -20 C intake temperature C 55 at -10 C intake temperature C 65 Electrical values heat pump Rated voltage 1/N/PE 230 V/50 Hz Max. rated current A 30 Starting current (with electronic starting current limiter) A 45 Start-up current (with stalled armature) A 160 Fuse protection A 1 x Z 32 A Fan protection 6.3 A H slow IP rating IP 20 IP 24 Control circuit rated voltage 1/N/PE 230 V/50 Hz Control circuit protection 6.3 A H (slow) Refrigerant circuit Refrigerant R 407 C Fill volume kg 4.2 Compressor Type Hermetically sealed scroll compressor with injection Dimensions Total length mm Total width mm Total height mm Permiss. operating pressure bar 3 Connections Heating flow and return G 1½" 1¼" Condensate hose (Ø internal/external) mm 25/32 Weight Total weight kg Sound transmission data Vitocal 350-A, 400 V appliances Type AWH-I (for corner installation, see page 76) AWH-O Sound power level Weighted total sound power level in the installation db(a) at A 3 C (±3 K)/W 60 C (±5 K) room external db(a) Vitocal 350-A, 230 V appliances Type AWH-I-M (for corner AWH-O-M installation, see page 76) Sound power level Weighted total sound power level in the installation db(a) 56 at A 3 C (±3 K)/W 60 C (±5 K) room external db(a) Test of the total sound power level with reference to DIN EN ISO / DIN EN ISO , accuracy class 2 VITOCAL VIESMANN 23

24 Vitocal 350-A (cont.) Dimensions, type AWH-I 95 a b c A Cable entries B Heating water return/dhw cylinder return Hydraulic pipes, cables and condensate drain can be routed out of the heat pump to the left or right. Dimensions Type AWH-I a b c C Condensate drain D Heating water flow/dhw cylinder flow The connecting hoses for the heating water flow, heating water return and the condensate drain can be trimmed. The stated dimensions a and b result from the hose lengths in the delivered condition. 24 VIESMANN VITOCAL

25 Vitocal 350-A (cont.) Dimensions, type AWH-O f g e h A Condensate drain B Heating water flow/dhw cylinder flow C Heating water return/dhw cylinder return D Silencer hoods Dimensions Type AWH-O e f g h VITOCAL VIESMANN 25

26 Vitocal 350-A (cont.) Output diagrams The COP data in the tables and diagrams were calculated with reference to DIN EN Type AWH-I/AWH-O 110, 400 V Heating output in kw Air temperature in C Coefficient of Performance ε (COP) Air temperature in C A Heating output B Power consumption C T HV = 35 C D T HV = 55 C E T HV = 65 C T HV Heating water flow temperature Heating output data Operating point W C A C Heating output kw Power consumption kw Coefficient of performance (COP) VIESMANN VITOCAL

27 Vitocal 350-A (cont.) Type AWH-I/AWH-O 114, 400 V Heating output in kw Air temperature in C Coefficient of Performance ε (COP) Air temperature in C A Heating output B Power consumption C T HV = 35 C D T HV = 55 C E T HV = 65 C T HV Heating water flow temperature 3 Heating output data Operating point W C A C Heating output kw Power consumption kw Coefficient of performance (COP) VITOCAL VIESMANN 27

28 Vitocal 350-A (cont.) Type AWH-I/AWH-O 120, 400 V Heating output in kw Air temperature in C Coefficient of Performance ε (COP) Air temperature in C A Heating output B Power consumption C T HV = 35 C D T HV = 55 C E T HV = 65 C T HV Heating water flow temperature Heating output data Operating point W C A C Heating output kw Power consumption kw Coefficient of performance (COP) VIESMANN VITOCAL

29 Vitocal 350-A (cont.) Type AWH-I-M/AWH-O-M 110, 230 V Heating output in kw Air temperature in C Coefficient of Performance ε (COP) Air temperature in C A Heating output B Power consumption C T HV = 35 C D T HV = 55 C E T HV = 65 C T HV Heating water flow temperature 3 Heating output data Operating point W C A C Heating output kw Power consumption kw Coefficient of performance (COP) VITOCAL VIESMANN 29

30 DHW cylinder 4.1 Vitocell 100-V, type CVW For DHW heating in conjunction with heat pumps up to 16 kw and solar collectors; also suitable for boilers and district heating systems. Suitable for the following systems: DHW temperature up to 95 C Heating water flow temperature up to 110 C Solar flow temperature up to 140 C Operating pressure on the heating water side up to 10 bar Operating pressure on the solar side up to 10 bar Operating pressure on the DHW side up to 10 bar 4 Cylinder capacity l 390 DIN register no. 0260/05-13 MC/E Continuous output 90 C kw 109 for DHW heating from 10 to 45 C and a heating l/h 2678 water flow temperature of... at the heating water 80 C kw 87 throughput stated below l/h C kw 77 l/h C kw 48 l/h C kw 26 l/h 639 Continuous output for DHW heating from 10 to 60 C and a heating water flow temperature of... at the heating water throughput stated below 90 C kw 98 l/h C kw 78 l/h C kw 54 l/h 929 Heating water throughput for the stated continuous outputs m 3 /h 3.0 Draw-off rate l/min 15 Available water volume without booster Cylinder volume heated to 45 C, l 280 water at t = 45 C (constant) Cylinder volume heated to 55 C, l 280 water at t = 55 C (constant) Heat-up time for connection of a heat pump with 16 kw rated heating output and a heating water flow temperature of 55 or 65 C for heating DHW from 10 to 45 C min 60 for heating DHW from 10 to 55 C min 77 Max. connectable heat pump output kw 16 at 65 C heating water flow temperature and 55 C DHW temperature and the stated heating water throughput Max. aperture surface that can be connected to the solar indirect coil set (accessory) Vitosol-F m Vitosol-T m 2 6 Performance factor N L in conjunction with a heat pump Cylinder storage temperature 45 C C 3.0 Standby heat loss q BS kwh/24 h 2.78 (standard parameter to DIN V 18599) Dimensions Length (7) incl. thermal insulation mm 850 excl. thermal insulation mm 650 Total width incl. thermal insulation mm 918 excl. thermal insulation mm 881 Height incl. thermal insulation mm 1629 excl. thermal insulation mm 1522 Height when tilted excl. thermal insulation mm 1550 Weight incl. thermal insulation kg 190 Total weight in operation kg 582 Incl. immersion heater Heating water content l 27 Heating surface m VIESMANN VITOCAL

31 DHW cylinder (cont.) Cylinder capacity l 390 Connections Heating water flow and return R 1¼ Cold water, hot water R 1¼ Solar internal indirect coil set [indirect coils] R ¾ DHW circulation R 1 Immersion heater Rp 1½ Information regarding continuous output When designing the system for the continuous output as stated or calculated, allow for the corresponding circulation pump. The stated continuous output is only achieved when the rated boiler output continuous output. WW ELH1 ELH2/R 422 Z HV SPR1 WW2 SPR2 HR KW/E SPR E ELH1 ELH2 HR HV KW Drain Connections for immersion heater Flanged aperture for immersion heater Heating water return Heating water flow Cold water R Inspection/clean-out aperture with flange cover SPR1 Cylinder temperature control sensor SPR2 Temperature sensor of the solar internal indirect coil set WW1 DHW WW2 Hot water from the solar internal indirect coil set Z DHW circulation Performance factor N L According to DIN 4708, without return temperature limit. Cylinder storage temperature T cyl = cold water inlet temperature +50 K +5 K/ 0 K Performance factor N L at heating water flow temperature 90 C C C 12.0 Peak output (over 10 minutes) Relative to the performance factor N L. DHW heating from 10 to 45 C without return temperature limit. Max. draw-off rate (over 10 minutes) Relative to the performance factor N L. With booster. DHW heating from 10 to 45 C. Performance factor N L The performance factor N L varies according to the cylinder storage temperature T cyl. Standard values T cyl = 60 C 1.0 N L T cyl = 55 C 0.75 N L T cyl = 50 C 0.55 N L T cyl = 45 C 0.3 N L Peak output (l/10 min) at a heating water flow temperature of 90 C C C 455 Max. draw-off rate (l/min) at a heating water flow temperature of 90 C C C 46 VITOCAL VIESMANN 31

32 DHW cylinder (cont.) Pressure drop Pressure drop in mbar Heating water throughput in litres/h Pressure drop in mbar DHW throughput in l/h Pressure drop on the DHW side Pressure drop on the heating water side 32 VIESMANN VITOCAL

33 DHW cylinder (cont.) 4.2 Vitocell 300-B, type EVB for Vitocal 300-A For DHW heating in conjunction with boilers and solar collectors for dual-mode operation. Suitable for the following systems: DHW temperature up to 95 C Heating water flow temperature up to 200 C Solar flow temperature up to 200 C Operating pressure on the heating water side up to 25 bar Operating pressure on the solar side up to 25 bar Operating pressure on the DHW side up to 10 bar Cylinder capacity l Indirect coil upper lower upper lower DIN registration number 0100/08-10MC Continuous output kw C for DHW heating from 10 to 45 C and a heating water l/h flow temperature of... at the heating water throughput stated below l/h kw C 70 C kw l/h C kw l/h C kw l/h Continuous output kw C for DHW heating from 10 to 60 C and a heating water l/h flow temperature of... at the heating water throughput stated below l/h kw C 70 C kw l/h Heating water throughput for the stated continuous outputs m 3 /h Max. connectable aperture area Vitosol m Max. connectable heat pump output kw at 55 C heating water flow temperature and 45 C DHW temperature for the given heating water throughput (both indirect coils connected in series) Thermal insulation Rigid PUR foam Flexible PUR foam Standby heat loss q BS kwh/24 h (standard parameter) Standby capacity V aux l Solar capacity V sol l Dimensions Length a (Ø) incl. thermal insulation mm excl. thermal insulation mm 715 Width b incl. thermal insulation mm excl. thermal insulation mm 914 Height c incl. thermal insulation mm excl. thermal insulation mm 1667 Height when incl. thermal insulation mm 1821 tilted excl. thermal insulation mm 1690 Weight incl. thermal insulation kg Heating water content l Heating surface m Connections Indirect coils R 1 1¼ Cold water, hot water R 1 1¼ DHW circulation R 1 1¼ 4 Information regarding the upper indirect coil The upper indirect coil is intended to be connected to a heat source. Information regarding the lower indirect coil The lower indirect coil is intended to be connected to solar collectors. To install the cylinder temperature sensor, use the threaded elbow with sensor well provided in the standard delivery. VITOCAL VIESMANN 33

34 DHW cylinder (cont.) Information regarding continuous output When designing the system for the continuous output as stated or calculated, allow for the corresponding circulation pump. The stated continuous output is only achieved when the rated boiler output continuous output. 300 litre capacity BÖ WW HV/SPR1 Z HR 4 Ø HVs/SPR2 HRs c SPR1/SPR2 a 87 KW/E b BÖ E HR HR s HV HV s Inspection and cleaning aperture Drain Heating water return Heating water return, solar thermal system Heating water flow Heating water flow, solar thermal system KW Cold water SPR1 Cylinder temperature control sensor SPR2 Temperature sensors/thermometer WW DHW Z DHW circulation 34 VIESMANN VITOCAL

35 DHW cylinder (cont.) 500 litre capacity BÖ WW HV 508 Ø 100 SPR1 Z HR HVs/SPR2 HRs c SPR a KW/E b 4 BÖ E HR HR s HV HV s Inspection and cleaning aperture Drain Heating water return Heating water return, solar thermal system Heating water flow Heating water flow, solar thermal system KW Cold water SPR1 Cylinder temperature control sensor SPR2 Temperature sensors/thermometer WW DHW Z DHW circulation Cylinder temperature sensor for solar operation Cylinder capacity 300 l, arrangement of cylinder temperature sensor in the heating water return HR s A Cylinder temperature sensor (standard delivery of solar control unit) B Threaded elbow fitting with sensor well (standard delivery) Cylinder capacity 500 l, arrangement of cylinder temperature sensor in the heating water return HR s A Cylinder temperature sensor (standard delivery of solar control unit) B Threaded elbow fitting with sensor well (standard delivery) Performance factor N L To DIN Upper indirect coil. Cylinder storage temperature T cyl = cold water inlet temperature + 50 K +5 K/ 0 K VITOCAL VIESMANN 35

36 DHW cylinder (cont.) Cylinder capacity l Performance factor N L at heating water flow temperature 90 C C C Performance factor N L The performance factor N L varies according to the cylinder storage temperature T cyl. Standard values T cyl = 60 C 1.0 N L T cyl = 55 C 0.75 N L T cyl = 50 C 0.55 N L T cyl = 45 C 0.3 N L Peak output (during a 10 minute period) Relative to the performance factor N L. DHW heating from 10 to 45 C. Cylinder capacity l Peak output (l/min) at heating water flow temperature 90 C C C Max. draw-off rate (over 10 minutes) Relative to the performance factor N L. With booster heating. DHW heating from 10 to 45 C. Cylinder capacity l Max. draw-off rate (l/min) at heating water flow temperature 90 C C C VIESMANN VITOCAL

37 DHW cylinder (cont.) Pressure drop A B C Pressure drop in mbar Heating water throughput in l/h Pressure drop in mbar DHW throughput in l/h Pressure drop on the DHW side Pressure drop on the heating water side A Cylinder capacity 500 l (lower indirect coil) B Cylinder capacity 300 l (lower indirect coil) C Cylinder capacity 300 and 500 l (upper indirect coil) VITOCAL VIESMANN 37

38 Installation accessories 5.1 Heating circuit (secondary circuit) for external installation For Vitocal 300-A, type AW-O and Vitocal 350-A, type AWH-O. Secondary circuit circulation pump As heating circuit pump or as circulation pump for cylinder heating Also as secondary pump for DHW/central heating (when changing over via additional three-way diverter valve) Circulation pump Wilo standard circulation pump, type RS 25-70R, 230 V~ Grundfos standard circulation pump, type UPS 25-60, 230 V~ Curves 6 Energy Efficiency Cate- Part no. gory B B Head in m Flow rate in m³/h Grundfos UPS UPS max. (1) 3 (2) 2 (3) 5 Head in m 1 min. (4) Pump rate in m³/h max. Output in W min Pump rate in m³/h Wilo RS 25-70R 38 VIESMANN VITOCAL

39 Installation accessories (cont.) Hydraulic connection 32 2, , Ø210 Ø Ø210 Ø220 Ø200 ca. 80 A Hydraulic connection set B Wall seal flange (2 pce) C Wall seal ring D Pipe liner E Hole diameter F Insulation material G External wall H Expanding mortar VITOCAL VIESMANN 39

40 Installation accessories (cont.) Hydraulic connection set Position A in drawing on page 39 For flexible routing underground, comprising: Flow and return 2 x PE 32 x 2.9 in one pipe (7 111 mm), thermally insulated 4 adaptors DN 32 to R 1" (male) Vertical pipe 1.2 m long, lower heat pump connection Horizontal pipe, heat pump house Available lengths: The flow and return lines are made of high pressure linked polyethylene to DIN 16892/93 with the pressure stage 6 bar at 95 C and encased in an oxygen barrier to DIN To differentiate between the two pipes, one is marked with a stripe. The thermal insulation is made from polyurethane foam that is linearly water-proof. The protective sleeve is applied to the polyurethane foam in a coextrusion process. Length [m] Part no Wall seal flange Part no , position B in drawing on page 39 As inlet into a building with pressurised water through concrete walls and in a pipe liner through brickwork. The required core diameter for the drilled hole is 200 mm (including pipe liner D (accessories) 260 mm). If no pipe liner is used then the entire wall of the drilled hole should be sealed to prevent the risk of hairline cracks. Wall seal ring Part no , position C in drawing on page 39 As inlet into a building through brickwork. The wall seal ring can be inserted into a drilled hole (for concrete, required diameter is 220 mm) or a wall breakthrough (for brickwork, required diameter is 300 x 300 mm). The distance between the wall seal ring and the external wall must be at least 80 mm; seal with commercially available expanding mortar. 5 Pipe liner Part no , position D in drawing on page 39 For routing through brickwork with wall seal flange B, internal7 200 mm, external7 210 mm 40 VIESMANN VITOCAL

41 Installation accessories for the Vitocal 300-A 6.1 Air circuit (primary circuit), type AWC-I Wall outlet set Part no EPP air connection set for corner installation, comprising 4 components: 1 wall outlet intake side A for appliance connection 1 wall outlet discharge side B for appliance connection 2 straight wall outlets C, 0.35 m long, can be trimmed 810 A If a weather grille is required, it must be ordered separately. 181 B C Air ducts, straight Wall outlets part no are used as air ducts. VITOCAL VIESMANN 41

42 Installation accessories for the Vitocal 300-A (cont.) Air duct bend 90 Part no Material: EPP (expanded polypropylene) With click closure 30 mm vapour-proof insulation Pressure drop per 90 bend Vitocal 350-A 300-A Type AWH-I 120 AWH-I 114 AWH-I 110 AWC-I Air flow m³/h rate Pressure drop Pa Wall outlet, straight Part no Material: EPP (expanded polypropylene) With click closure 30 mm vapour-proof insulation The wall outlet can be trimmed to the required size Pressure drop per metre air duct Vitocal 350-A 300-A Type AWH-I 120 AWH-I 114 AWH-I 110 AWC-I Air flow m³/h rate Pressure drop Pa Wall outlet intake side for appliance connection Part no Material: EPP (expanded polypropylene) The wall outlet has an all-round, flexible sealing profile for airtight connection to the appliance A B A All-round flexible sealing profile B Wall outlet 42 VIESMANN VITOCAL

43 Installation accessories for the Vitocal 300-A (cont.) Wall outlet discharge side for appliance connection Part no Material: EPP (expanded polypropylene) The wall outlet has an all-round, flexible sealing profile for airtight connection to the appliance A B A All-round flexible sealing profile B Wall outlet Weather grille Part no Material: Aluminium For plugging into the wall outlet/air duct Pressure drop Vitocal 350-A 300-A Type AWH-I 120 AWH-I 114 AWH-I 110 AWC-I Air flow rate m³/h Pressure drop intake Pa side discharge side Pa VITOCAL VIESMANN 43

44 Installation accessories for the Vitocal 300-A (cont.) Silencer hood Part no AB C B A C D C Made from zinc-plated steel with insulation For sound sensitive systems (in external areas) For mounting on external walls The silencer hood can be painted with acrylic paints. Pressure drop Vitocal 350-A 300-A Type AWH-I 120 AWH-I 114 AWH-I 110 AWC-I Air flow m³/h rate Pressure drop Pa A Wall outlet B Weather grilles C Silencer hood D Insulation material 6.2 Air circuit (primary circuit) type AW-O Sound insulation set Part no. Z For retrofitting in Vitocal 300-A, type AW-O (standard) The appliance then achieves the sound power level of the Silent version. Comprising 3 silencer hoods (2 pce for discharge aperture, 1 pce for intake aperture) Colour: Vitosilver 6 44 VIESMANN VITOCAL

45 Installation accessories for the Vitocal 300-A (cont.) 6.3 Heating circuit (secondary circuit) type AWC-I Instantaneous heating water heater Part no. Z Electric instantaneous heating water heater (3/6/9 kw) for installation in the Vitocal 300-A, type AWC-I, can be plugged in electrically and hydraulically, with High limit safety cut-out Control module Thermal insulation 6.4 Heating circuit (secondary circuit) type AW-O Safety equipment block Part no Components: Safety valve R ½" or R ¾" (blow-off pressure 3 bar) Pressure gauge Automatic air vent valve with automatic shut-off facility Thermal insulation Three-way diverter valve (R 1") Part no In conjunction with DHW cylinders Only required if common circulation pump (secondary circuit pump) is used for DHW/central heating. Instantaneous heating water heater 6 Part no. Z Electric instantaneous heating water heater (3/6/9 kw) for installation in the heating flow inside the building, with High limit safety cut-out Control module Thermal insulation Solder fittings Ø 28 mm copper pipe Wall mounting bracket 6.5 DHW heating with Vitocell 100-V, type CVW Solar heat exchanger set Part no For connecting solar collectors to the Vitocell 100-V, type CVW VITOCAL VIESMANN 45

46 Installation accessories for the Vitocal 300-A (cont.) Booster heater EHE For installation in the flanged aperture in the lower section of the Vitocell 100-V, type CVW. Part no. Z For installation in the flanged aperture in the upper section of the Vitocell 100-V, type CVW. Part no Only use the booster heater with soft to medium hard water up to 14 dh (hardness level 2, up to 2.5 mol/m 3 ). The output can be selected: 2, 4 or 6 kw Components: High limit safety cut-out Control thermostat A contactor relay, part no , is required for switching the booster heater via the heat pump. Specification Heating output kw Rated voltage 3/N/PE 400 V/50 Hz IP rating IP 54 Rated current A Heat-up time from 10 to 60 C Immersion heater, bottom h Immersion heater, top h The immersion heaters part no. Z and must not be used for operation at 230 V~. In this case, commercially available immersion heaters must be used for operation with Vitocell 100-V, type CVW. Impressed current anode Part no. Z Maintenance free In place of the supplied magnesium anode 6.6 DHW heating with Vitocell 300-B, type EVB 6 Immersion heater EHE Part no.: Z For installation into the flanged aperture of the Vitocell 300-B, type EVB, 300 litre capacity. Part no.: Z For installation into the flanged aperture of the Vitocell 300-B, type EVB, 500 litre capacity. Only use the immersion heater with soft to medium hard water up to 14 dh (hardness level 2, up to 2.51 mmol/l). The output is optional: 2, 4 or 6 kw Components: Gaskets High limit safety cut-out Control thermostat The immersion heaters part no. Z and Z must not be used for operation at 230 V~. In this case, commercially available immersion heaters must be used for operation with Vitocell 300-B, type EVB. If the immersion heater is controlled via the heat pump, a contactor relay is required. Specification Heating output kw Rated voltage 3/N/PE 400 V/50 Hz IP rating IP 54 Rated current A Heat-up time from 10 to 60 C 300 litres h litres h Safety equipment to DIN bar Part no a 6 bar Part no Components: Shut-off valve Non-return valve and test connector Pressure gauge connector Diaphragm safety valve 46 VIESMANN VITOCAL

47 Installation accessories for the Vitocal 300-A (cont.) 6.7 Cooling Fan convectors Vitoclima 200-C With three-way control valve With 4-pipe heat exchanger for heating and cooling For wall mounting Plinth for floor mounting Part no V202H Part no. Z V203H Part no. Z V206H Part no. Z V209H Part no. Z Fan convector specification Fan convectors Vitoclima 200-C Type V202H V203H V206H V209H Cooling capacity kw Heating output kw Power supply [terminals] 1/N/PE 230 V/50 Hz Fan power consumption at speed V1 W at speed V2 W at speed V3 W at speed V4 W at speed V5 W Cooling valve k v value m 3 /h Connection R 1/2" R 1/2" R 1/2" R 3/4" Heating valve k v value m 3 /h Connection R 1/2" R 1/2" R 1/2" R 1/2" Condensate connection Ø mm Thermostatically activated servomotor Max. permiss. ambient temperature C Max. permiss. media temperature C Power consumption W Rated current ma Weight kg Factory-set fan speed Dimensions a b c Front and side view A Plinth (accessory) VITOCAL VIESMANN 47

48 Installation accessories for the Vitocal 300-A (cont.) Type Dimensions in mm a b c V202H V203H V206H V209H a Type Dimensions in mm a b c d V202H V203H V206H V209H d c b Wall mounting (front view) A Air outlet B Top C 4 fixing holes 7 8 mm D Bottom E Floor F Air inlet a b a b Type Dimensions in mm a b c d e f g h k V202H V203H V206H V209H f e d c c d e f 100 g h g h 100 Position of the hydraulic connections (side view, both sides) A R.H. B L.H. C Heating return connection D Cooling return connection E Heating flow connection F Cooling flow connection 48 VIESMANN VITOCAL

49 Installation accessories for the Vitocal 350-A 7.1 Air circuit (primary circuit), type AWH-I Wall outlet set 810 EPP air connection set for corner installation, comprising 4 components: 1 wall outlet intake side A for appliance connection 1 wall outlet discharge side B for appliance connection 2 straight wall outlets C, 0.35 m long, can be trimmed 966 If a weather grille is required, it must be ordered separately. a 810 Vitocal 350-A Type AWH-I 110 AWH-I 114 AWH-I 120 Dimension a in mm Part no Air ducts, straight Wall outlets part no are used as air ducts. Air duct bend 90 Part no Material: EPP (expanded polypropylene) With click closure 30 mm vapour-proof insulation Pressure drop per 90 bend Vitocal 350-A 300-A Type AWH-I 120 AWH-I 114 AWH-I 110 AWC-I Air flow m³/h rate Pressure drop Pa VITOCAL VIESMANN 49

50 Installation accessories for the Vitocal 350-A (cont.) Wall outlet, straight Part no Material: EPP (expanded polypropylene) With click closure 30 mm vapour-proof insulation The wall outlet can be trimmed to the required size Pressure drop per metre air duct Vitocal 350-A 300-A Type AWH-I 120 AWH-I 114 AWH-I 110 AWC-I Air flow m³/h rate Pressure drop Pa Weather grille Part no Material: Aluminium For plugging into the wall outlet/air duct Pressure drop Vitocal 350-A 300-A Type AWH-I 120 AWH-I 114 AWH-I 110 AWC-I Air flow rate m³/h Pressure drop intake Pa side discharge side Pa Silencer hood Part no AB C B A C D C Made from zinc-plated steel with insulation For sound sensitive systems (in external areas) For mounting on external walls The silencer hood can be painted with acrylic paints. Pressure drop Vitocal 350-A 300-A Type AWH-I 120 AWH-I 114 AWH-I 110 AWC-I Air flow m³/h rate Pressure drop Pa A Wall outlet B Weather grilles C Silencer hood D Insulation material 50 VIESMANN VITOCAL

51 Installation accessories for the Vitocal 350-A (cont.) 7.2 Heating circuit (secondary circuit) general Safety equipment block Part no Components: Safety valve R ½" or R ¾" (blow-off pressure 3 bar) Pressure gauge Automatic air vent valve with automatic shut-off facility Thermal insulation Three-way diverter valve (R 1") Part no In conjunction with DHW cylinders Only required if common circulation pump (secondary circuit pump) is used for DHW/central heating. 3-way diverter valve (R 1¼") Part no In conjunction with DHW cylinders Only required if common circulation pump (secondary circuit pump) is used for DHW/central heating. 7 VITOCAL VIESMANN 51

52 Installation accessories for the Vitocal 350-A (cont.) 7.3 Heating circuit (secondary circuit) type AWH-I Instantaneous heating water heater (set 1) Part no. Z Set for installation in the Vitocal 350-A, type AWH-I comprising: Instantaneous heating water heater A (3/6/9 kw), can be plugged in electrically and hydraulically, with High limit safety cut-out Control module Thermal insulation Hydraulic connection set Instantaneous heating water heater (set 2) Part no. Z : Set with Wilo high efficiency DC pump, type Stratos Para 25/1-7, 230 V~, corresponding to energy efficiency label A Part no. Z : Set with Wilo standard circulation pump, type RS 25/6, 230 V~, corresponding to energy efficiency label B Set for installation in the Vitocal 350-A, type AWH-I comprising: Instantaneous heating water heater C (3/6/9 kw), can be plugged in electrically and hydraulically, with High limit safety cut-out Control module Thermal insulation Hydraulic connection accessories Circulation pump (secondary circuit) A High efficiency DC pump B Standard circulation pump 7 52 VIESMANN VITOCAL

53 Installation accessories for the Vitocal 350-A (cont.) Circulation pump (secondary circuit) Part no : Set with Wilo high efficiency DC pump, type Stratos Para 25/1-7, 230 V~, corresponding to energy efficiency label A Part no : Set with Wilo standard circulation pump, type RS 25/6, 230 V~, corresponding to energy efficiency label B Set for installation in the Vitocal 350-A, type AWH-I comprising: Circulation pump A High efficiency DC pump B Standard circulation pump Hydraulic connection accessories 7 VITOCAL VIESMANN 53

54 Installation accessories for the Vitocal 350-A (cont.) Curves High efficiency DC pump Standard circulation pump Head in m Pump rate in m³/h 60 Head in m min. (3) (2) max. (1) Pump rate in m³/h Output in W Pump rate in m³/h Wilo, type RS 25/6 Wilo, type Stratos Para 25/ VIESMANN VITOCAL

55 Installation accessories for the Vitocal 350-A (cont.) 7.4 Heating circuit (secondary circuit) type AWH-O Instantaneous heating water heater Part no. Z Electric instantaneous heating water heater for installation in the heating flow (G 1") inside the building, comprising: Instantaneous heating water heater (3/6/9 kw) with High limit safety cut-out Control module Thermal insulation Hydraulic connection set Circulation pump (secondary circuit) Part no Curves Head in m Pump rate in m³/h 60 Set for installation in the secondary circuit flow inside the building, comprising: Set with Wilo high efficiency DC pump, type Stratos Para 25/1-7, 230 V~, corresponding to energy efficiency label A Hydraulic connection accessories Output in W Pump rate in m³/h Wilo, type Stratos Para 25/ DHW heating with Vitocell 100-V, type CVW, type AWH-I/AWH-O 110 Solar heat exchanger set Part no For connecting solar collectors to the Vitocell 100-V, type CVW 7 Booster heater EHE For installation in the flanged aperture in the lower section of the Vitocell 100-V, type CVW. Part no. Z For installation in the flanged aperture in the upper section of the Vitocell 100-V, type CVW. Part no Only use the booster heater with soft to medium hard water up to 14 dh (hardness level 2, up to 2.5 mol/m 3 ). The output can be selected: 2, 4 or 6 kw Components: High limit safety cut-out Control thermostat A contactor relay, part no , is required for switching the booster heater via the heat pump. VITOCAL VIESMANN 55

56 Installation accessories for the Vitocal 350-A (cont.) Specification Heating output kw Rated voltage 3/N/PE 400 V/50 Hz IP rating IP 54 Rated current A Heat-up time from 10 to 60 C Immersion heater, bottom h Immersion heater, top h The immersion heaters part no. Z and must not be used for operation at 230 V~. In this case, commercially available immersion heaters must be used for operation with Vitocell 100-V, type CVW. Impressed current anode Part no. Z Maintenance free In place of the supplied magnesium anode 7.6 DHW heating with primary store system type AWH-I 114, 120 and type AWH-O 114, way motorised ball valve (DN 32) Part no With electric drive (230 V~) Connection R 1¼" Cylinder primary pump For DHW heating via a plate heat exchanger (on-site). Grundfos UPS B Part no Grundfos UPS B Part no UPS B 7 Curves Head in m UPS 25-60B Pump rate in m³/h Type UPS B, 230 V~ Head in m Pump rate in m³/h Type UPS B, 230 V~ Plate heat exchanger Vitotrans 100 For DHW heating with a primary store system in conjunction with Vitocal 350-A, type AWH-I/AWH-O. Vitocal 350-A Part no. Type AWH-I/AWH-O Type AWH-I/AWH-O VIESMANN VITOCAL

57 Design information Vitocal 300-A 8.1 Internal installation of the Vitocal 300-A, type AWC-I Information regarding positioning Maintain a minimum clearance of 1.5 m between the air outlet and downpipes. Otherwise there is a risk of foul water freezing in winter. 8 A 1.5 m B 0.5 m A Downpipe B Air outlet 0.5 m 3 m Maintain a minimum clearance of 3 m between the air outlet and footpaths or patios. If the clearance is any less than this, there is a risk of black ice forming on the footpath at outside temperatures as high as 10 C. A Footpath or patio Reflective surfaces (e.g. walls of light wells) must be positioned at least 450 mm away from the air outlet. Use perforated deflectors to optimise the airflow around right angled deviations from the bottom of the shaft to the wall of the shaft. A Light well B Deflector VITOCAL VIESMANN 57

58 Design information Vitocal 300-A (cont.) Never install the heat pump immediately next to or directly below bedrooms/quiet rooms. 8 A Bedroom/quiet room Installation room requirements Minimum room height 2000 mm The heat pump is designed for corner installation in a separate room for heating, ventilation, air conditioning and refrigeration appliances, the location of which should enable the shortest possible routing of ducts to the intake and discharge apertures. This room must be dry and free of frost. Drain the condensate that accumulates from the air (subject to the temperature and relative humidity, this can be as much as 20 l/h) via a siphon (with a hydraulic seal of at least 60 mm) into an on-site drain connection DN 50 or via a lifting system. The drain pipe must be routed in a way which keeps it free from the risk of frost. Install the wall outlets plumb and at right angles to each other. Observe the minimum room volume. Min. space requirement According to DIN EN 378 the minimum volume for the installation room depends on the amount and the consistency of the refrigerant. V min Minimum room volume in m 3 m max max. amount of refrigerant in kg G Practical limit in accordance with DIN EN 378, subject to the refrigerant constituency Refrigerant Practical limit in kg/m 3 R 407 C 0.31 R 410 A 0.44 R 134 A 0.25 If several heat pumps are to be installed in one room, add the minimum room volumes of the individual appliances together. Taking into account the refrigerant used and the fill volume, a minimum room volume of 16.8 l results for the Vitocal 300-A, type AWC-I. V min = m max G Air routing in the installation room The total additional pressure drop on the inlet and outlet side must not exceed 32 Pa at an air volume of 3300 m 3 /h. If the length of the duct exceeds 6 m and more than one 90 bend is incorporated, the pressure drop will need to be calculated. This also applies when using other duct cross-sections and materials. For the pressure drop of the components available as accessories, see page 41. Position the ventilation air and extract air apertures in such a way as to prevent the formation of an "air short circuit". Secure wall outlets and weather grilles for the ventilation and extract air apertures to prevent break-ins. When using other materials to manufacture the air duct please note the following requirements: The ventilation and extract air ducts must be equipped with internal thermal insulation that is at least 19 mm thick. The thermal insulation must be made from a diffusion proof material and must provide insulation against the cold and against sound. The ducts must be sealed. Provide the intake and discharge apertures with protective grilles (to afford protection against small animals). Measures to reduce sound emissions: We recommend installing the heat pump on the floor plate of the building or on a separate, sound-insulated plinth. Structure-borne noise may become a critical issue if the heat pump is installed in a room on a higher floor and/or on a wooden floor. If the heat pump is installed in a room that offers little or no sound attenuation then it should be placed on an additional sound absorbing base (if necessary place the heat pump on a foundation slab and a rubber mat). If the room offers no sound absorption at all, apply additional sound absorbing materials to the surrounding wall and ceiling surfaces to reduce the transmission of structure-borne noise to other rooms. All wall outlets of air ducts and pipes (both on internal and external walls) must be insulated against the transmission of structure-borne noise. We recommend applying flexible material (not foam insulation) around the air duct or wall outlet to isolate structure-borne noise between the air duct or wall outlet and the surrounding building structure. Never install the heat pump below or next to living rooms or bedrooms. 58 VIESMANN VITOCAL

59 Design information Vitocal 300-A (cont.) To minimise flow noise, the maximum flow velocity at the air intake and discharge should not exceed 2.5 m/s (in relation to the free cross-section of the weather grille or ground level grating). If the air is to be expelled via a light well, then the light well should be designed as shown in the "Light well" illustration (see page 62). To prevent the ingress of rain and condensate into the air ducts, size the water drain adequately and maintain a clearance of at least 300 mm between the lower edge of the wall outlet and the floor of the light well. Minimum clearance for corner installation (please note: finished dimensions) Wall outlet dimensions for corner installation (please note: shell dimensions) Before making the wall outlets, check the structural calculation of the building and the wall. If necessary, a support may need to be fitted. For corner installation (l.h. or r.h. discharge), the wall outlets are the same size. 8 Observe the minimum room height of 2000 mm. A x x A 80 A B B Minimum clearances l.h. discharge Example: Discharge on the left 80 A A x x A B B Minimum clearances r.h. discharge Wall outlet dimensions A Electrical connection B Hydraulic and condensate connections A Wall outlet B OKFFB VITOCAL VIESMANN 59

60 Design information Vitocal 300-A (cont.) In unfinished buildings, the relevant thickness of render and plasterboard must be taken into account: 8 Plaster/end coating thickness in mm Dimensions x in mm (= end coating/plaster thickness) Wall outlet dimensions for corner installation A B C D E F 810 C E 80 D Example: Corner installation, l.h. discharge (delivered condition) A External rendering B Wall C Wall outlet (can be trimmed to the correct size from the outside with a saw. Observe plaster thickness) D Compression sealing strip and acrylic airtight seam (all-round) E PU foam (all-round) F Plaster finish/wall coating Level the wall outlet with a spirit level before securing and reinforce from the inside. 60 VIESMANN VITOCAL

61 1000 Design information Vitocal 300-A (cont.) Min. clearances and dimensions for installation against the wall H G x x 350 A X B C 810 D A Wall outlet on the discharge side (made of EPP) B Weather grilles C Partition, for dimensions see the following diagram D Connection on the intake side with wall outlet (made of EPP) E Heat pump F Connection on the discharge side (made of EPP) G Straight wall outlets as air ducts (made of EPP) H 90 bend (made of EPP) X Clearance for wall outlets EPP Expanded polypropylene Number of duct parts Total length of Clearance X for wall outlets duct parts F E Partition for air intake/discharge via weather grille Partition for air intake/discharge via light well A B D B h 1000 C h 1000 h +500 K C A to D See previous diagram h Height to the top edge of the weather grille A K D A, C, D See previous diagram K Top edge of the light well VITOCAL VIESMANN 61

62 Design information Vitocal 300-A (cont.) Air routing with light well 8 B A C D E F 430 A Light well B Vibration-absorbing lining (at least 50 mm) C Ground level grating (suitable for walking on) D Protection against burglary E Brickwork F All-round PU foam G Wall outlet for appliance connection (for corner installation) H Compression sealing strip and all-round acrylic airtight seam K Wall outlet L Protective grille (to protect against small animals) M Condensate drain N Perforated deflector (only required for light wells with a sharp deviation from the floor to the wall) N M L H K HG Light well Electrical connections E B C L K H A D Wiring diagram for standard system example F G M A Heat pump B LV cable, pre-manufactured C Control cable, pre-manufactured D For power cable (special tariff/load current), see the following table E Outside temperature sensor, sensor lead (2 x 0.75 mm 2 ) F Control unit, power cable (5 x 1.5 mm 2 ) with power-off contact, zero volt G Electricity meter/mains H DHW cylinder K Outside temperature sensor, sensor lead (2 x 0.75 mm 2 ) L DHW circulation pump, power cable (3 x 1.5 mm 2 ) M Power cable for instantaneous heating water heater (accessories): 400 V 5 x 2.5 mm V 7 x 2.5 mm 2 When installing additional buffer cylinders, mixed heating circuits, external heat sources (gas/oil/wood), remote control etc., the additionally required supply and control cables and sensor leads must be factored in. Requirements regarding the electrical installation Observe the technical connection requirements specified by your local power supply utility. Your local power supply utility will provide you with details regarding the required metering and switching equipment. A separate electricity meter should be provided for the heat pump. Viessmann heat pumps operate with 400 V~ (in some countries 230 V models are also available). The control circuit requires a power supply of 230 V~. The control circuit fuse (6.3 A) is located in the heat pump control unit. The fan fuse (6.3 A) is located in the heat pump control panel. 62 VIESMANN VITOCAL

63 Design information Vitocal 300-A (cont.) Vitocal 300-A, type AWC-I Required cable cross-section of the power cable at a cable length of 25 m and Line fuse Vitocal 300-A, type AWC-I-M Required cable cross-section of the power cable at a cable length of 25 m and Line fuse Load category A *2 5 x 4 mm 2 Load category B *3 5 x 2.5 mm 2 Z 20 A Load category A *2 3 x 6 mm 2 Load category B *3 3 x 6 mm 2 Z 25 A 8 Noise development Sound pressure level for Vitocal 300-A, type AWC-I Intake and discharge via external weather grille Measured at different distances from the weather grille Excl. silencer hoods on weather grille Output range Sound source Fan 80 to 100 % 50 to 79 % 0 to 49 % Intake Discharge Intake Discharge Intake Discharge Incl. silencer hoods on weather grille Output range Sound source Fan 80 to 100 % 50 to 79 % 0 to 49 % Intake Discharge Intake Discharge Intake Discharge Directivity Q Distance from the weather grille in m Sound pressure level L P in db(a) * Directivity Q Distance from the weather grille in m Sound pressure level L P in db(a) * *2 Routing through thermally insulated walls, poor heat transfer. *3 Routing on or in walls with good heat transfer or underground. *4 Value measured at a distance of 1 m in a semi-free field. Additional values (2 to 15 m) calculated according to the formula in chapter "Sound reflection and sound pressure level". VITOCAL VIESMANN 63

64 Design information Vitocal 300-A (cont.) Hydraulic conditions for designing the secondary circuit 8 Pressure drop diagram, instantaneous heating water heater (accessory) A B C min. DN 25 Pressure drop in mbar Flow rate in m³/h A Secondary circuit flow, DHW cylinder B Secondary circuit flow, central heating C Secondary circuit return Route hydraulic lines with at least DN 25 in the secondary circuit. Subject to the heating system version, safeguard the minimum flow rate by implementing the following measures: Install the overflow valve at the place in the heating circuit, which is the furthest removed from the heat pump. Install a heating water buffer cylinder to separate the heating circuits. Install a low loss header. Install direct heating circuits without thermostatic valves (system user permission required). Residual head of the integral circulation pump Head in m 7.0 RS 15/ Pump rate in m³/h Without instantaneous heating water heater 64 VIESMANN VITOCAL

65 Design information Vitocal 300-A (cont.) 8.2 External installation Vitocal 300-A, type AW-O Frost protection The frost protection function provided by the control unit operates as soon as the control unit and the heating circuit pump are operational. Drain the system via a fill & drain valve (on-site) if the heat pump is shut down or there is a prolonged power failure. Information regarding positioning In heat pump systems, where a power failure cannot be recognised (holiday home), the heating circuits can, as an alternative, be operated with antifreeze. 8 3 m 3 m The air discharge of the unit must not be positioned within 3 m of footpaths or patios, as the air in the discharge area of the heat pump is cool enough to cause black ice at outside temperatures as high as 10 C. A Footpath or patio Do not allow the cold discharge air to flow onto buildings at short range. Do not position the discharge side of the appliance towards the building. A Side of building with window 5 m To prevent the noise disturbing neighbours, we recommend that the appliance should not be positioned within 5 m of the boundary of your property, or suitable noise attenuating measures should be taken. Always observe the important information about noise development. A Property boundary VITOCAL VIESMANN 65

66 Design information Vitocal 300-A (cont.) 1.2 m To leave sufficient access for servicing work, the front of the unit must not be closer than 1.2 m to the building. 8 A Building Do not set up the unit in areas surrounded by walls or buildings. The higher the number of reflective surfaces, the louder the noise generated by the appliance (see also chapter "Sound reflection and sound pressure level"). Furthermore, an air short circuit can result. Minimum clearances Vitocal 300-A without silencer hoods Vitocal 300-A with silencer hoods Foundations Set up the heat pump level on a durable and solid base. We recommend laying concrete foundations as shown in the following diagrams. The thickness of cover represents an average value and should be matched to local conditions. This must be done in accordance with the standard rules of building engineering. Appropriately sized cutouts or recesses C must be provided in the foundations for the cables and pipes coming into the heat pump from below (heating flow and return with shared thermal insulation D, cables E and condensate drain F). Construct the foundations, the mounting surface and the ducts so that rodents cannot enter the heat pump and the ducts. 66 VIESMANN VITOCAL

67 Design information Vitocal 300-A (cont.) D 880 A B D 1000 A B C C Plan view of the foundations for Vitocal 300-A A Concrete foundations according to local requirements and in accordance with the standard rules of building engineering. (Observe spot loads of adjustable feet) B Recess in the foundations to route the heating flow and return lines, condensate drain and electric cables (LV and control cables, power cable) C Front of the heat pump D For the Vitocal 300-A with silencer hoods: Soft ground, gravel or crushed stone Sectional view of the foundations for Vitocal 300-A, type AW-O (shown with silencer hoods) A Concrete foundations according to local requirements and in accordance with the standard rules of building engineering B Frost protection (compacted crushed stone, e.g. 0 to 32/56 mm); the thickness of the layer will depend on the local conditions and the standard rules of building engineering C Heating flow and return of the hydraulic connection set, electric cables (sensor leads, control cables, power supply), condensate drain Wind loads On solid foundations capable of bearing weight, the Vitocal 300-A is stable up to wind force 7 Bft. For wind force 8 Bft and above, additional anchors are required for each adjustable foot. Each anchor comprises a commercially available tie bolt, e.g. FAZ II 12/10 from Fischer, and an anchor plate that must be fitted on site. If the wind flow is obstructed very near the installation location, the stability must be assessed separately. Such obstructions may be caused by: Barriers created by buildings, walls, hedges etc. "Wind tunnels" between parts of the building Ø C B A Anchor plate (on site) 300 D A Tie bolts (on site, e.g. FAZ II 12/10 from Fischer) B Anchor plate (on site) C Adjustable foot, Vitocal 300-A, type AW-O D Concrete foundations VITOCAL VIESMANN 67

68 Design information Vitocal 300-A (cont.) Condensate drain of the heat exchanger 8 Draining condensate via a soakaway 900 A Foundations B Frost protection (compacted crushed stone) C Ground D Condensate hose, Ø 25 mm internal, Ø 32 mm external E Drain pipe (at least DN 50) F Gravel bed as condensate soakaway If the condensate is to soak away then DN 50 drain pipe E must terminate at a depth that is free from the risk of frost (at least 900 mm deep). The ground needs to offer good drainage properties, as the heat pump can generate up to 20 l/h condensate (subject to temperature and relative humidity). We recommend the installation of a soakaway made from gravel or crushed stone in accordance with the diagram shown. The female connection of drain pipe (at least DN 50) E must be flush with the top edge of the foundation. If necessary, insert the hose via a siphon insert. Draining condensate via a connection to a drainage system A Foundations B Frost protection (compacted crushed stone) C Ground D Condensate hose, Ø 25 mm internal, Ø 32 mm external E Drain pipe (at least DN 50) F Stench trap (siphon) in an area free from the risk of frost G Drain Draining the condensate via a sewer or drainage system requires the installation of a siphon with a hydraulic seal of at least 60 mm in an area free from the risk of frost (min. depth 900 mm). The siphon prevents the escape of drainage gases. A maintenance shaft should be provided for the siphon The female connection of drain pipe (at least DN 50) E must be flush with the top edge of the foundation. If necessary, insert the hose via a siphon insert. Information about frost protection The condensate drain pipe may freeze if subjected to very low temperatures for prolonged periods. For this reason, thermally insulate the condensate drain pipe sufficiently or install an outside temperature dependent auxiliary heater on site. 68 VIESMANN VITOCAL

69 Design information Vitocal 300-A (cont.) Cables and hydraulic pipes 8 max , min max.! min Connections on the building side in the basement A Control cable, control unit/heat pump (accessory) B Sensor lead, control unit/heat pump (accessory) C Weather-compensated heat pump control unit D Power cable (on site) for power supply to the heat pump E Hydraulic connection line (accessory) F Condensate drain (on-site) Provide the heating water connection using the hydraulic connection set (accessory) that is available pre-manufactured to different lengths. The set comprises one flexible flow line and one flexible return line (both PE 32 x 2.9) in a shared thermal insulation and two screw-type unions for the transition from DN 32 to R 1" (male). Route the pipes into the building via a suitable pipe liner with sealing flanges H (both accessories). Provide a fill & drain facility L inside the building shortly downstream of the entry point of the heating water connections (at a depth of 0.8 m below ground level in all cases) for the heating water flow and return. In buildings at ground level, provide a suitable insulated duct or enable drainage with compressed air. The frost-protection of the control unit operates provided the control unit and the heating circuit pump are ready for operation. If the heat pump is taken out of operation or there is a prolonged power cut, drain the system via the fill & drain valve L. Where heat pump systems cannot necessarily indicate a power failure (e.g. in a holiday home), the heating circuits can alternatively also be operated with a suitable antifreeze. G KG conduit DN 100 for external connections, control unit/heat pump (on site) H Pipe liner with wall seal flange for hydraulic connection line (accessory) K Moisture-proof and waterproof wall ducts (on site) L Shut-off and drain valves Use an underground cable (NYY) as power cable D outside the building; alternatively route an NYM cable inside a KG conduit G. Observe the regulations imposed by your local power supply utility. Ensure on-site wall duct K is moisture and water-proof. Allow a cable length of 2.5 m for routing inside the heat pump casing. VITOCAL VIESMANN 69

70 Design information Vitocal 300-A (cont.) 8 Route the pre-assembled connecting cables (control cables and sensor leads A and B) of different lengths inside a KG conduit DN 100 G. When routing KG conduit G, insert a wire pull for the control cables and sensor leads at the same time. To prevent excessive resistance when pulling the electrical cables/leads through the conduit, avoid installing 90º bends (it would be better to install 3 x 30º bends, or at least 2 x 45º bends). When pulling the cables/leads through the conduit towards the heat pump, protect the round plugs with bubble wrap or similar against contamination and damage. The plugs on the control unit side should also be protected against damage (e.g. due to being stepped on) until they are connected. Ensure on-site wall duct K is moisture and water-proof. KG conduit G should be routed with a slope towards the heat pump and may need a condensate drain. Observe the permissible bending radius of the KG conduit; never kink the conduit. Seal the apertures of KG conduit G around the cables/leads so that animals cannot enter the building. If the connections on the building side are positioned at ground level (see the diagram below) then we recommend that the required connection lines and inlets should be positioned before the ground slab is constructed. Any retrofitted installation will be very expensive. 900 Connections on the building side at ground level E Hydraulic connection pipe (accessory) K Moisture and water-proof wall duct (on-site) L Fill & drain valves (for draining with compressed air) M Expansion vessel with safety assembly (accessory) N Floor plate of the building O KG conduit DN 100 for external connections, control unit/heat pump (on site, with state-of-the-art building seal) Electrical connections A E F B C O G D P N L K H M Wiring diagram for standard system example A Heat pump B LV cable, pre-manufactured C Control cable, pre-manufactured D For power cable (special tariff/load current), see the following table E Outside temperature sensor, sensor lead (2 x 0.75 mm 2 ) F Control unit, power cable (5 x 1.5 mm 2 ) with power-off contact power cable, zero volt G Electricity meter/mains H DHW cylinder K Outside temperature sensor, sensor lead (2 x 0.75 mm 2 ) L Circulation pump for cylinder heating or 3-way diverter valve, power cable (3 x 1.5 mm 2 ) 70 VIESMANN VITOCAL

71 Design information Vitocal 300-A (cont.) M DHW circulation pump, power cable (3 x 1.5 mm 2 ) N Heating circuit pump, power cable (3 x 1.5 mm 2 ) O Power cable for instantaneous heating water heater control module 400 V 5 x 2.5 mm V 7 x 2.5 mm 2 P Instantaneous heating water heater (accessory) 8 When installing additional buffer cylinders, mixed heating circuits, external heat sources (gas/oil/wood), remote control etc., the additionally required supply and control cables and sensor leads must be factored in. Requirements regarding the electrical installation Observe the technical connection requirements specified by your local power supply utility. Your local power supply utility will provide you with details regarding the required metering and switching equipment. A separate electricity meter should be provided for the heat pump. Viessmann heat pumps operate with 400 V~ (in some countries 230 V models are also available). Vitocal 300-A, type AW-O Required cable cross-section of the power cable at a cable length of 25 m and Line fuse Vitocal 300-A, type AW-O-M Required cable cross-section of the power cable at a cable length of 25 m and Line fuse The control circuit requires a power supply of 230 V~. The control circuit fuse (6.3 A) is located in the heat pump control unit. The fan fuse (6.3 A) is located in the heat pump control panel. Load category A *2 5 x 4 mm 2 Load category B *3 5 x 2.5 mm 2 Z 20 A Load category A *2 3 x 6 mm 2 Load category B *3 3 x 6 mm 2 Z 25 A Noise development Vitocal 300-A, type AW-O Silent (with sound insulation set) 31 db(a) 37 db(a) Sound pressure levels measured at different distances (semi-floorstanding measurement, Q=2) at a fan rating of 80 to 100 % A A residential building occupied by a third party may only be located in this area under certain conditions. 51 db(a) 1 m 5 m 10 m A *2 Routing through thermally insulated walls, poor heat transfer. *3 Routing on or in walls with good heat transfer or underground. VITOCAL VIESMANN 71

72 Design information Vitocal 300-A (cont.) Sound pressure level measured at different distances to the appliance (with sound insulation set) 8 Output range Fan 80 to 100 % to 79 % 56 0 to 49 % 51 Sound power level L W in db(a) *5 Directivity Q Distance from the heat pump in m Sound pressure level L P in db(a) * In practice, actual values may differ from those shown here due to sound reflection or absorption as a result of local conditions. For example, the situations described by Q=4 and Q=8 often only give an inaccurate picture of the actual conditions at the emission site. Vitocal 300-A, type AW-O standard (without sound insulation set) 36 db(a) 42 db(a) Sound pressure levels measured at different distances (semi-floorstanding measurement, Q=2) at a fan rating of 80 to 100 % A No residential building occupied by a third party should be in this area. 56 db(a) 1 m 5 m 10 m A Sound pressure level measured at different distances to the appliance (with sound insulation set) Output range Fan 80 to 100 % to 79 % 59 0 to 49 % 55 Sound power level L W in db(a) *5 Directivity Q Distance from the heat pump in m Sound pressure level L P in db(a) * In practice, actual values may differ from those shown here due to sound reflection or absorption as a result of local conditions. For example, the situations described by Q=4 and Q=8 often only give an inaccurate picture of the actual conditions at the emission site. *5 Weighted total sound power level with reference to ISO These measurements were taken in a semi-free field under the following conditions: A 23 C ± 3 C, W 53 C ± 2 C *6 Determined by calculation (in accordance with the formula in chapter "Sound reflection and sound pressure level") on the basis of the actual effective total sound power level. 72 VIESMANN VITOCAL

73 Design information Vitocal 300-A (cont.) Measures to reduce noise emissions Never position the heat pump directly next to living rooms, bedrooms or their windows. On pipe inlets in ceilings and walls use suitable insulating materials to prevent the transmission of structure-borne noise (see also the information regarding internal installation on page 58). Never install the heat pump in the immediate vicinity of neighbouring buildings or properties (see also "Information regarding positioning"). The sound pressure level can be raised by installing the heat pump in unfavourable physical positions. In this connection, please observe the following: Avoid surroundings with hard reflecting floors, such as concrete or plaster, as the sound pressure level can be increased through reflections. Surroundings that are covered with vegetation, e.g. lawn, can noticeably reduce the perceived sound pressure level. The heat pump should preferably be positioned as floorstanding (see also the section on "Sound reflection and sound pressure level"). If the locally applicable legislation governing the maximum permitted sound emissions [in Germany this is the "TA Lärm" technical directive] (see table below) is not satisfied, then suitable building measures must be employed to reduce the sound pressure level to acceptable levels (e.g. through additional planting). 8 Hydraulic conditions for designing the secondary circuit Route hydraulic lines with at least DN 25 in the secondary circuit. Subject to the heating system version, safeguard the minimum flow rate by implementing the following measures: Install the overflow valve at the place in the heating circuit, which is the furthest removed from the heat pump. Install a heating water buffer cylinder to separate the heating circuits. Install a low loss header. Install direct heating circuits without thermostatic valves (system user permission required). Pressure drop diagram, instantaneous heating water heater (accessory) See page 64. B A min. DN 25 A Secondary circuit flow B Secondary circuit return VITOCAL VIESMANN 73

74 Design information Vitocal 350-A 9.1 Internal installation of the Vitocal 350-A, type AWH-I Information regarding positioning Maintain a minimum clearance of 1.5 m between the air outlet and downpipes. Otherwise there is a risk of foul water freezing in winter. 9 A 1.5 m B 0.5 m A Downpipe B Air outlet 0.5 m 3 m Maintain a minimum clearance of 3 m between the air outlet and footpaths or patios. If the clearance is any less than this, there is a risk of black ice forming on the footpath at outside temperatures as high as 10 C. A Footpath or patio Reflective surfaces (e.g. walls of light wells) must be positioned at least 450 mm away from the air outlet. Use perforated deflectors to optimise the airflow around right angled deviations from the bottom of the shaft to the wall of the shaft. A Light well B Deflector 74 VIESMANN VITOCAL

75 Design information Vitocal 350-A (cont.) Never install the heat pump immediately next to or directly below bedrooms/quiet rooms. 9 A Bedroom/quiet room Installation room requirements Minimum room height 2.1 m The heat pump is designed for corner installation in a separate room for heating, ventilation, air conditioning and refrigeration appliances, the location of which should enable the shortest possible routing of ducts to the intake and discharge apertures. This room must be dry and free of frost. Drain the condensate that accumulates from the air (subject to the temperature and relative humidity, this can be as much as 20 l/h) via a siphon (with a hydraulic seal of at least 60 mm) into an on-site drain connection DN 50 or via a lifting system. The drain pipe must be routed in a way which keeps it free from the risk of frost. Install the wall outlets plumb and at right angles to each other. Observe the minimum room volume. If several heat pumps are to be installed in one room, add the minimum room volumes of the individual appliances together. Taking into account the refrigerant used and the fill volume, the following minimum room volumes result: Vitocal 350-A, type AWH-I 110 AWH-I 114 AWH-I 120 Min. space requirement m Min. space requirement According to DIN EN 378 the minimum volume for the installation room depends on the amount and the consistency of the refrigerant. V min = m max G V min Minimum room volume in m 3 m max max. amount of refrigerant in kg G Practical limit in accordance with DIN EN 378, subject to the refrigerant constituency Refrigerant Practical limit in kg/m 3 R 407 C 0.31 R 410 A 0.44 R 134 A 0.25 VITOCAL VIESMANN 75

76 Design information Vitocal 350-A (cont.) Air routing in the installation room The total additional pressure drop on the inlet and outlet side must not exceed the following values: Minimum clearances and dimensions for corner installation (please note: finished dimensions) Vitocal 350-A, type AWH-I 110 AWH-I 114 AWH-I 120 Air volume m 3 /h Total pressure drop Pa b a c If the length of the duct exceeds 6 m and more than one 90 bend is incorporated, the pressure drop will need to be calculated. This also applies when using other duct cross-sections and materials. For the pressure drop of the components available as accessories, see page h Position the ventilation air and extract air apertures in such a way as to prevent the formation of an "air short circuit". Secure wall outlets and weather grilles for the ventilation and extract air apertures to prevent break-ins. When using other materials to manufacture the air duct please note the following requirements: The ventilation and extract air ducts must be equipped with internal thermal insulation that is at least 19 mm thick. The thermal insulation must be made from a diffusion proof material and must provide insulation against the cold and against sound. The ducts must be sealed. Provide the intake and discharge apertures with protective grilles (to afford protection against small animals). Measures to reduce sound emissions: We recommend installing the heat pump on the floor plate of the building or on a separate, sound-insulated plinth. Structure-borne noise may become a critical issue if the heat pump is installed in a room on a higher floor and/or on a wooden floor. Always use the adjustable anti-vibration feet supplied with the Vitocal 350-A. If the heat pump is installed in a room that offers little or no sound attenuation then it should be placed on an additional sound absorbing base (if necessary place the heat pump on a foundation slab and a rubber mat). If the room offers no sound absorption at all, apply additional sound absorbing materials to the surrounding wall and ceiling surfaces to reduce the transmission of structure-borne noise to other rooms. All wall outlets of air ducts and pipes (both on internal and external walls) must be insulated against the transmission of structure-borne noise. We recommend applying flexible material (not foam insulation) around the air duct or wall outlet to isolate structure-borne noise between the air duct or wall outlet and the surrounding building structure. Never install the heat pump below or next to living rooms or bedrooms. To minimise flow noise, the maximum flow velocity at the air intake and discharge should not exceed 2.5 m/s (in relation to the free cross-section of the weather grille or ground level grating). If the air is to be expelled via a light well, then the light well should be designed as shown in the "Light well" illustration (see page 79). To prevent the ingress of rain and condensate into the air ducts, size the water drain adequately and maintain a clearance of at least 300 mm between the lower edge of the wall outlet and the floor of the light well. Discharge on the left e Discharge on the right c b 810 a h d A External rendering B Wall C Wall outlet (can be trimmed to the correct size from the outside with a saw. Observe plaster thickness) D Compression sealing strip and acrylic airtight seam (all-round) E PU foam (all-round) F Plaster finish/wall coating G Hydraulic and condensate connections 76 VIESMANN VITOCAL

77 Design information Vitocal 350-A (cont.) Dimensions Vitocal 350-A, type AWH-I 110 AWH-I 114 AWH-I 120 a mm b mm c mm d mm e mm g mm h mm Observe the minimum room height of 2.1 m. Wall outlet dimensions for corner installation (please note: shell dimensions) Before making the wall outlets, check the structural calculation of the building and the wall. If necessary, a support may need to be fitted. For corner installation (l.h. or r.h. discharge), the wall outlets are the same size c A Wall outlet, discharge side B Wall outlet, intake side In unfinished buildings, the relevant thickness of render and plasterboard must be taken into account: Plaster/end coating thickness in mm Dimension c in mm for Vitocal 350-A, type AWH-I 110 AWH-I 114 AWH-I g OKFFB VITOCAL VIESMANN 77

78 1000 Design information Vitocal 350-A (cont.) Min. clearances and dimensions for installation against the wall X g A Wall outlet on the discharge side (made of EPP) B Weather grilles C Partition, for dimensions see the following diagram D Wall outlet on the intake side (made of EPP) E Connection on the intake side (made of EPP) F Heat pump G Connection on the discharge side (made of EPP) H Straight wall outlets as air ducts (made of EPP) K 90 bend (made of EPP) X Clearance for wall outlets EPP Expanded polypropylene = 1 x 350 = 8 x h Number of duct parts Total length of Clearance X for wall outlets duct parts Partition for air intake/discharge via weather grille Partition for air intake/discharge via light well A B D B h 1000 C h 1000 h +500 K C A to D See previous diagram h Height to the top edge of the weather grille A K D A, C, D See previous diagram K Top edge of the light well 78 VIESMANN VITOCAL

79 Design information Vitocal 350-A (cont.) Air routing with light well C D E F B 430 A C Ground level grating (suitable for walking on) D Protection against burglary E Brickwork F All-round PU foam G Wall outlet for appliance connection (for corner installation) H Compression sealing strip and all-round acrylic airtight seam K Wall outlet L Protective grille (to protect against small animals) M Condensate drain N Perforated deflector (only required for light wells with a sharp deviation from the floor to the wall) The wall outlets have a conical shape. As a result, more quilting (PU foam insulation) is required. 9 N M L H K HG Light well A Light well B Vibration-absorbing lining (at least 50 mm) Electrical connections Wiring diagram for standard system example with heating water buffer cylinder A Heat pump B LV cable, pre-manufactured C Control cable, pre-manufactured D For power cable (special tariff/load current), see the following table E Outside temperature sensor, sensor lead (2 x 0.75 mm 2 ) F Control unit, power cable (5 x 1.5 mm 2 ) with power-off contact, zero volt G Electricity meter/mains H DHW cylinder K Outside temperature sensor, sensor lead (2 x 0.75 mm 2 ) L DHW circulation pump, power cable (3 x 1.5 mm 2 ) M Power cable for instantaneous heating water heater (accessories): 400 V 5 x 2.5 mm V 7 x 2.5 mm 2 N Heating water buffer cylinder P Secondary pump, power cable (3 x 1.5 mm 2 ) Q Heating circuit pump When installing additional buffer cylinders, mixed heating circuits, external heat sources (gas/oil/wood), remote control etc., the additionally required supply and control cables and sensor leads must be factored in. VITOCAL VIESMANN 79

80 Design information Vitocal 350-A (cont.) Requirements regarding the electrical installation Observe the technical connection requirements specified by your local power supply utility. Your local power supply utility will provide you with details regarding the required metering and switching equipment. A separate electricity meter should be provided for the heat pump. Viessmann heat pumps operate with 400 V~ (in some countries 230 V models are also available). The control circuit requires a power supply of 230 V~. The control circuit fuse (6.3 A) is located in the heat pump control unit. The fan fuse (6.3 A) is located in the heat pump control panel. 9 Vitocal 350-A Required cable cross-section of the power cable at a cable length of 25 m and Type AWH-I 110 AWH-I 114 AWH-I 120 Load category A *2 5 x 4 mm 2 5 x 6 mm 2 5 x 6 mm 2 Load category B *3 5 x 2.5 mm 2 5 x 4 mm 2 5 x 4 mm 2 Line fuse Z 16 A Z 16 A Z 20 A Vitocal 350-A, type AWH-I-M Required cable cross-section of the power cable at a cable length of 25 m and Line fuse Load category A *2 3 x 6 mm 2 Load category B *3 3 x 6 mm 2 Z 32 A Hydraulic conditions for designing the secondary circuit Pressure drop diagram, instantaneous heating water heater (accessory) min. DN 25 Pressure drop in mbar Flow rate in m³/h A Secondary circuit flow B Secondary circuit return Route hydraulic lines with at least DN 25 in the secondary circuit. Subject to the heating system version, safeguard the minimum flow rate by implementing the following measures: Install the overflow valve at the place in the heating circuit, which is the furthest removed from the heat pump. Install a heating water buffer cylinder to separate the heating circuits. Install a low loss header. Install direct heating circuits without thermostatic valves (system user permission required). *2 Routing through thermally insulated walls, poor heat transfer. *3 Routing on or in walls with good heat transfer or underground. 80 VIESMANN VITOCAL

81 Design information Vitocal 350-A (cont.) 9.2 External installation Vitocal 350-A, type AWH-O Frost protection The frost protection function provided by the control unit operates as soon as the control unit and the heating circuit pump are operational. Drain the system via a fill & drain valve (on-site) if the heat pump is shut down or there is a prolonged power failure. In heat pump systems, where a power failure cannot be recognised (holiday home), the heating circuits can, as an alternative, be operated with antifreeze. Information regarding positioning 3 m 3 m The air discharge of the unit must not be positioned within 3 m of footpaths or patios, as the air in the discharge area of the heat pump is cool enough to cause black ice at outside temperatures as high as 10 C. 9 A Footpath or patio Do not allow the cold discharge air to flow onto buildings at short range. Do not position the discharge side of the appliance towards the building. A Side of building with window 5 m To prevent the noise disturbing neighbours, we recommend that the appliance should not be positioned within 5 m of the boundary of your property, or suitable noise attenuating measures should be taken. Always observe the important information about noise development. A Property boundary VITOCAL VIESMANN 81

82 Design information Vitocal 350-A (cont.) 1.2 m To leave sufficient access for servicing work, the front of the unit must not be closer than 1.2 m to the building. 9 A Building Do not set up the unit in areas surrounded by walls or buildings. The higher the number of reflective surfaces, the louder the noise generated by the appliance (see also chapter "Sound reflection and sound pressure level"). Furthermore, an air short circuit can result. Minimum clearances Foundations Set up the heat pump level on a durable and solid base. We recommend laying concrete foundations as shown in the following diagrams. The thickness of cover represents an average value and should be matched to local conditions. This must be done in accordance with the standard rules of building engineering. Appropriately sized cutouts or recesses D must be provided in the foundations for the cables and pipes coming into the heat pump from below (heating flow and return with shared thermal insulation E, cables G and condensate drain F). Construct the foundations, the mounting surface and the ducts so that rodents cannot enter the heat pump and the ducts. 82 VIESMANN VITOCAL

83 Design information Vitocal 350-A (cont.) AWH-O 110: 1080 AWH-O 114: 1230 AWH-O 120: Plan view of the foundations A Installation area of the heat pump on concrete foundations B Concrete foundations, consisting of: Concrete plate C25/30, BSt 500 S and M Reinforcement with all-round wire mesh made of Q 257 A Observe local requirements and the standard rules of building engineering, as well as the spot loads through adjustable feet. C Front of the heat pump D Soft ground, gravel or crushed stone E Recess in the foundations to route the heating water flow and return, condensate drain, connecting cables (LV and control cables) and power cable to the control panel F Cable entry for heating water flow and return G KG conduit DN 100 for connecting cables (LV and control cables) and power cable to the control panel H Condensate drain DN 50 Trim the hydraulic connection pipes and install the connection fittings before laying the concrete foundations. Provide on-site pipe protection against frost. VITOCAL VIESMANN 83

84 Design information Vitocal 350-A (cont.) 8 37 A Concrete foundations as previously described and according to local requirements and in accordance with the standard rules of building engineering B Frost protection (compacted crushed stone, e.g. 0 to 32/56 mm); the thickness of the layer will depend on the local conditions and the standard rules of building engineering C Hydraulic connection set (heating water flow and return) D Soft ground, gravel or crushed stone E Connecting cables (LV and control cables) and power cable to the control panel F Condensate drain / Wind loads Fixing the heat pump with the enclosed anchors (anchor plates) and on-site tie bolts (e.g. FAZ II 12/10 from Fischer) ensures stability in wind zones 1 and 2 in accordance with DIN up to 900 m above sea level. An exception is a 5 km wide strip along the coast inland in wind zone 2. Installation locations outside the specified wind zones require a separate fixing/anchoring verification. C Adjustable foot, Vitocal 350-A, type AWH-O D Concrete foundations If the wind flow is obstructed very near the installation location, the stability must be assessed separately. Such obstructions may be caused by: Barriers created by buildings, walls, hedges etc. "Wind tunnels" between parts of the building 12 C B A D A Tie bolts (on site, e.g. FAZ II 12/10 from Fischer) B Anchor plate (standard delivery) 84 VIESMANN VITOCAL

85 Design information Vitocal 350-A (cont.) Condensate drain of the heat exchanger Draining condensate via a soakaway 900 A Foundations B Frost protection (compacted crushed stone) C Ground D Condensate hose, Ø 25 mm internal, Ø 32 mm external E Drain pipe (at least DN 50) F Gravel bed as condensate soakaway If the condensate is to soak away then DN 50 drain pipe E must terminate at a depth that is free from the risk of frost (at least 900 mm deep). The ground needs to offer good drainage properties, as the heat pump can generate up to 20 l/h condensate (subject to temperature and relative humidity). We recommend the installation of a soakaway made from gravel or crushed stone in accordance with the diagram shown. The female connection of drain pipe (at least DN 50) E must be flush with the top edge of the foundation. If necessary, insert the hose via a siphon insert. 9 Draining condensate via a connection to a drainage system A Foundations B Frost protection (compacted crushed stone) C Ground D Condensate hose, Ø 25 mm internal, Ø 32 mm external E Drain pipe (at least DN 50) F Stench trap (siphon) in an area free from the risk of frost G Drain Draining the condensate via a sewer or drainage system requires the installation of a siphon with a hydraulic seal of at least 60 mm in an area free from the risk of frost (min. depth 900 mm). The siphon prevents the escape of drainage gases. A maintenance shaft should be provided for the siphon The female connection of drain pipe (at least DN 50) E must be flush with the top edge of the foundation. If necessary, insert the hose via a siphon insert. Information about frost protection The condensate drain pipe may freeze if subjected to very low temperatures for prolonged periods. For this reason, thermally insulate the condensate drain pipe sufficiently or install an outside temperature dependent auxiliary heater on site. VITOCAL VIESMANN 85

86 Design information Vitocal 350-A (cont.) Cables and hydraulic pipes 9 max , min max.! min Connections on the building side in the basement A Control cable, control unit/heat pump (accessory) B Sensor lead, control unit/heat pump (accessory) C Weather-compensated heat pump control unit D Power cable (on site) for power supply to the heat pump E Hydraulic connection line (accessory) F Condensate drain (on-site) Provide the heating water connection using the hydraulic connection set (accessory) that is available pre-manufactured to different lengths. The set comprises one flexible flow line and one flexible return line (both PE 32 x 2.9) in a shared thermal insulation and two screw-type unions for the transition from DN 32 to R 1" (male). Route the pipes into the building via a suitable pipe liner with sealing flanges H (both accessories). Provide a fill & drain facility L inside the building shortly downstream of the entry point of the heating water connections (at a depth of 0.8 m below ground level in all cases) for the heating water flow and return. In buildings at ground level, provide a suitable insulated duct or enable drainage with compressed air. The frost-protection of the control unit operates provided the control unit and the heating circuit pump are ready for operation. If the heat pump is taken out of operation or there is a prolonged power cut, drain the system via the fill & drain valve L. Where heat pump systems cannot necessarily indicate a power failure (e.g. in a holiday home), the heating circuits can alternatively also be operated with a suitable antifreeze. G KG conduit DN 100 for external connections, control unit/heat pump (on site) H Pipe liner with wall seal flange for hydraulic connection line (accessory) K Moisture-proof and waterproof wall ducts (on site) L Shut-off and drain valves Use an underground cable (NYY) as power cable D outside the building; alternatively route an NYM cable inside a KG conduit G. Observe the regulations imposed by your local power supply utility. Ensure on-site wall duct K is moisture and water-proof. Allow a cable length of 2.5 m for routing inside the heat pump casing. 86 VIESMANN VITOCAL

87 Design information Vitocal 350-A (cont.) Route the pre-assembled connecting cables (control cables and sensor leads A and B) of different lengths inside a KG conduit DN 100 G. When routing KG conduit G, insert a wire pull for the control cables and sensor leads at the same time. To prevent excessive resistance when pulling the electrical cables/leads through the conduit, avoid installing 90º bends (it would be better to install 3 x 30º bends, or at least 2 x 45º bends). When pulling the cables/leads through the conduit towards the heat pump, protect the round plugs with bubble wrap or similar against contamination and damage. The plugs on the control unit side should also be protected against damage (e.g. due to being stepped on) until they are connected. Ensure on-site wall duct K is moisture and water-proof. KG conduit G should be routed with a slope towards the heat pump and may need a condensate drain. Observe the permissible bending radius of the KG conduit; never kink the conduit. Seal the apertures of KG conduit G around the cables/leads so that animals cannot enter the building. If the connections on the building side are positioned at ground level (see the diagram below) then we recommend that the required connection lines and inlets should be positioned before the ground slab is constructed. Any retrofitted installation will be very expensive. 900 Connections on the building side at ground level E Hydraulic connection pipe (accessory) K Moisture and water-proof wall duct (on-site) L Fill & drain valves (for draining with compressed air) M Expansion vessel with safety assembly (accessory) N Floor plate of the building O KG conduit DN 100 for external connections, control unit/heat pump (on site, with state-of-the-art building seal) 9 Electrical connections Wiring diagram for standard system example A Heat pump B LV cable, pre-manufactured C Control cable, pre-manufactured D For power cable with special tariff/load current, see table E Outside temperature sensor, sensor lead (2 x 0.75 mm 2 ) F Control unit, power cable (5 x 1.5 mm 2 ) with power-off contact power cable, zero volt G Electricity meter/mains H DHW cylinder K Outside temperature sensor, sensor lead (2 x 0.75 mm 2 ) L Circulation pump for cylinder heating or 3-way diverter valve, power cable (3 x 1.5 mm 2 ) M DHW circulation pump, power cable (3 x 1.5 mm 2 ) N Secondary pump, power cable (3 x 1.5 mm 2 ) VITOCAL VIESMANN 87

88 Design information Vitocal 350-A (cont.) O Power cable for instantaneous heating water heater control module 400 V 5 x 2.5 mm V 7 x 2.5 mm 2 P Instantaneous heating water heater (accessory) R Secondary pump, power cable (3 x 1.5 mm 2 ) S Heating water buffer cylinder When installing additional heating circuits with mixer, external heat sources (gas/oil/wood), remote control etc., plus the additionally required supply and control cables and sensor leads must be factored in. Requirements regarding the electrical installation 9 Observe the technical connection requirements specified by your local power supply utility. Your local power supply utility will provide you with details regarding the required metering and switching equipment. A separate electricity meter should be provided for the heat pump. Viessmann heat pumps operate with 400 V~ (in some countries 230 V models are also available). The control circuit requires a power supply of 230 V~. The control circuit fuse (6.3 A) is located in the heat pump control unit. The fan fuse (6.3 A) is located in the heat pump control panel. Vitocal 350-A Type AWH-O 110 AWH-O 114 AWH-O 120 Required cable cross-section of the power Load category A *2 5 x 4 mm 2 5 x 6 mm 2 5 x 6 mm 2 cable at a cable length of 25 m and Load category B *3 5 x 2.5 mm 2 5 x 4 mm 2 5 x 4 mm 2 Line fuse Z 16 A Z 16 A Z 20 A Vitocal, type AWH-O-M Required cable cross-section of the power cable at a cable length of 25 m and Line fuse Load category A *2 3 x 6 mm 2 Load category B *3 3 x 6 mm 2 Z 32 A Hydraulic conditions for designing the secondary circuit Route hydraulic lines with at least DN 25 in the secondary circuit. Subject to the heating system version, safeguard the minimum flow rate by implementing the following measures: Install the overflow valve at the place in the heating circuit, which is the furthest removed from the heat pump. Install a heating water buffer cylinder to separate the heating circuits. Install a low loss header. Install direct heating circuits without thermostatic valves (system user permission required). Pressure drop diagram, instantaneous heating water heater (accessory) See page 80. min. DN 25 A Secondary circuit flow B Secondary circuit return *2 Routing through thermally insulated walls, poor heat transfer. *3 Routing on or in walls with good heat transfer or underground. 88 VIESMANN VITOCAL

89 Design information For Vitocal 300-A and Vitocal 350-A 10.1 Power supply and tariffs According to current Federal tariffs [Germany], the electrical demand for heat pumps is considered domestic usage. Where heat pumps are used to heat buildings, the local power supply company must first give permission [check with your local power supply company]. Check the connection conditions specified by your local power supply utility for the stated equipment details. It is crucial to establish whether a mono-mode and/or mono-energetic heat pump operation is feasible in the supply area. Application procedure The following details are required to assess the effect of the heat pump operation on the grid of your local power supply utility: User address Location where the heat pump is to be used Type of demand in accordance with general tariffs (domestic, agricultural, commercial, professional and other use) It is also important to obtain information about standing charges and energy tariffs, about the options for utilising off-peak electricity during the night and about any power-off periods. Address any questions relating to these issues to your customer's local power supply utility. Intended heat pump operating mode Heat pump manufacturer Type of heat pump Connected load in kw (from rated voltage and rated current) Max. starting current in A Max. heat load of the building in kw Installation location of the control unit Regardless of internal or external installation of the heat pump, the control unit must always be installed internally in a dry room (with ambient temperatures ranging from +2 to +35 C). In addition, the installation room should offer the following properties: level, smooth wall well lit and easily accessible near the heating circuit distribution (for short connections of pumps, sensors, mixers, etc.) protected against water drips and splashes Always make the heat pump connection via the connecting cables available as accessories (in 5, 15 or 30 m lengths) Sizing the heat pump Sizing is of particular relevance to heat pump systems that are to be operated in mono-mode, since oversized equipment will incur disproportionate system costs. Therefore avoid oversizing! First establish the standard heat load of the building Φ HL. For discussions with customers and for the preparation of a quotation, in most cases estimating the heat load is adequate. As with all heating systems, determine the standard heat load of the building in accordance with DIN EN before selecting the appropriate heat pump. Mono-mode operation According to DIN EN 12831, the heat pump system in mono-mode must, as sole heat source, be able to cover the entire heating demand of the building. When sizing the heat pump, observe the following: Take supplements to the heat load of the building to cover power- OFF periods into account. [In Germany] the power supply utility may cut off the power supply to heat pumps for up to 3 2 hours within a 24 hour period. Observe additional individual arrangements for customers with special tariffs. The building inertia means that 2 hours of power-off periods are not taken into consideration. However, the "enable time" between power-off periods must be at least as long as the preceding power-off period. Estimate of the heat load based on the heated area The heated surface area (in m 2 ) is multiplied by the following specific heat demand: Passive house 10 W/m 2 Low energy house 40 W/m 2 New build (according to WSchVO 95 or EnEV [Germany]) 50 W/m 2 House (built prior to 1995 with standard thermal insulation) 80 W/m 2 Older house (without thermal insulation) 120 W/m 2 Theoretical sizing with the power supply blocked for 3 2 hour periods Example: For an existing building with standard thermal insulation (80 W/m 2 ) and a heated area of 180 m 2 Estimated heat load: 14.4 kw Maximum blocking time of 3 2 hours at a minimum outside temperature in accordance with DIN EN h, therefore, result in a daily heat volume of: 14.4 kw 24 h = 346 kwh To cover the maximum daily heat volume, only 18h/day are available on account of the periods during which the power supply is blocked. VITOCAL VIESMANN 89

90 Design information (cont.) The building inertia means that 2 hours of the period during which power is blocked are not taken into consideration. 346 kwh / (18 + 2) h = 17.3 kw Frequently, power-off periods are only invoked if there is a need to do so. Please contact the customer's power supply utility to enquire about power-off periods. In other words, the heat pump heating output would need to be increased by 17 % if the power supply were blocked for a maximum of 3 2 hours per day. 10 Mono-energetic operation In heating operation, the heat pump system is supported by an instantaneous heating water heater, which is either integrated or available as an accessory. The control unit switches the instantaneous heating water heater on, subject to the outside temperature (dual mode temperature) and heat load. That part of the electric power drawn by the instantaneous heating water heater will generally not be charged at special tariffs. Supplement for DHW heating For general house building, a max. DHW consumption of approx. 50 litre per person per day at approx. 45 ºC is assumed. This represents an additional heat load of approx kw per person given a heat-up time of 8 h. This supplement will only be taken into consideration if the sum total of the additional heat load is greater than 20 % of the heat load calculated in accordance with DIN EN Sizing of typical system configurations: The heat pump heating output must be designed for approx. 70 to 85 % of the maximum required heat load of the building in accordance with DIN EN The heat pump covers approx. 95 % of the annual heat load. Blocking periods must not to be taken into consideration. Compared to mono-mode operation, the heat pump will run for longer due to its smaller size. DHW demand at a DHW temperature of 45 C Specific available heat Recommended heat load supplement for DHW heating *7 in l/d per person in Wh/d per person in kw/person Low demand 15 to to to 0.15 Standard demand *8 30 to to to 0.30 or Apartment (billing according to demand) Apartment (flat rate billing) Detached house *8 (average demand) Reference temperature of 45 C Specific available heat Recommended heat load supplement for DHW heating *7 in l/d per person in Wh/d per person in kw/person 30 approx approx approx approx approx approx Supplement for setback mode A supplement for setback mode in accordance with DIN EN is not required as the heat pump control unit is equipped with a temperature limiter for setback mode. In addition, the control unit is equipped with start optimisation, which means that there is also no need for a supplement for heating up from setback mode. Determining the dual mode point Air source heat pumps are predominantly operated in mono-energetic mode. At ultra low outside temperatures, the heat pump heating output drops, whilst at the same time the heat demand rises. For operation in mono-mode, very large systems would be required, and the heat pump would be oversized for the majority of the runtime. Both functions must be enabled in the control unit. If any of the supplements are omitted because of the activated control unit functions then this must be documented when the system is handed over to the operator. If these supplements are to be taken into account in spite of the control options, calculate them in accordance with DIN EN Above the dual mode point (e.g. -5 C), the heat pump covers the entire heat load. Below the dual mode point, the heat pump increases the return temperature of the heating system and an instantaneous heating water heater provides additional heating. The system is sized in accordance with the output diagrams. *7 With a DHW cylinder heat-up time of 8 h. *8 Select a higher supplement if the actual DHW demand exceeds the stated values. 90 VIESMANN VITOCAL

91 Design information (cont.) Example D E 65 C 50 C 35 C C A Heating output B Power consumption C Heating water flow temperatures T HV D Heat load E Dual mode point for a radiator system F Heating limit temperature Heat load to DIN EN 12831: 16 kw Minimum outside temperature: 15 C Heating limit temperature: 18 C Maximum flow temperature: 65 C Selected: Air source heat pump Vitocal 350-A, type AWH-I 114/ AWH-O 114 A C As can be seen in the output diagram, the dual mode point is at 8 C at an output of approx kw. 10 Heating output in kw B Air temperature in C F C 35 C C Heating circuit and heat distribution Different heating water flow temperatures are required depending on the heating system design. When using radiators or when modernising or replacing boilers, a Vitocal 350-A heat pump can be used, subject to the max. flow temperature of 65 C being observed. 90 Flow temperature in C E Outside temperature A in t C A B C D F G Allocation of the heating water flow temperatures to the outside temperature A Max. heating water flow temperature = 75 C B Max. heating water flow temperature = 60 C C Max. heating water flow temperature = 55 ºC, requirement for mono-mode operation of the heat pump D Max. heating water flow temperature = 35 ºC, ideal for monomode operation of the heat pump E Heating systems that are conditionally suitable for dual mode operation of the heat pump F Max heating water flow temperature Vitocal 350-A = 65 ºC G Max heating water flow temperature Vitocal 300-A = 60 ºC VITOCAL VIESMANN 91

92 Design information (cont.) The lower the selected maximum heating water flow temperature, the higher the seasonal performance factor of the heat pump Sizing of the heating water buffer cylinder Vitocal 300-A Underfloor heating (100 %) At a heat load of > 5 kw (according to DIN EN 12831), the heating water buffer cylinder can be omitted if one of the following applies: An overflow valve is installed in the last heating circuit with a minimum flow rate. The heating circuits for a bath are permanently open (user permit required). Design of the heating water buffer cylinder as a parallel cylinder (not in the return). Radiators (100 %) See Vitocal 350-A. 10 Underfloor heating on the ground floor and radiators in the attic To prevent the heating circuit cooling down completely, a heating water buffer cylinder of at least 200 litres is required. Vitocal 350-A Heating water buffer cylinder for optimised runtimes V HP Q WP V HP = Q WP (20 to 25 litres) Rated output of the heat pump Heating water buffer cylinder volume in litres 100 % sizing (subject to the existing heating surfaces) V HP = Φ HL c Δ P t SZ Example: Type AWH-I/AWH-O 120 V HP W 2 h = Wh =1720 kg kg k 10 k Q WP V HP = 18.5 kw = litres = 370 litres cylinder capacity 1720 kg water represent a cylinder capacity of approx l. Selection: 2 Vitocell 100-E each with 1000 l capacity. Selection: Vitocell 100-E with 400 litre cylinder capacity Heating water buffer cylinder for bridging periods when the supply is blocked This version is offered for heat distribution systems without additional cylinder mass (e.g. radiators, hydraulic fan convectors). Storing 100 % of heating energy for the duration of the power-off periods is feasible, but not recommended, otherwise cylinders would become too large. Example: Φ HL = 10 kw = W t Sz = 2 h (max. 3 x per day) Δϑ =10 K = Wh/(kg K) for water c P Rough sizing (subject to the utilisation of the delayed building heat loss) V HP = Φ HL (60 to 80 l) V HP V HP = l = 600 litre cylinder capacity Selection: 1 Vitocell 100-E with 750 litre cylinder capacity. c P Spec. thermal capacity in kwh/(kg K) Φ HL Heat load of the building in kw t Sz Period in h during which the supply is blocked V HP Heating water buffer cylinder volume in litres Δϑ System cool-down in K 92 VIESMANN VITOCAL

93 Design information (cont.) 10.6 DHW connection Example with Vitocell 100-V, type CVW Connection to DIN A DHW B DHW circulation line C Visible blow-off line outlet D Safety valve E Shut-off valve F Flow regulating valve (installation recommended) G Pressure gauge connection H Non-return valve K Drain L Cold water M Drinking water filter N Pressure reducer to DIN issue Dec.1988 O Non-return valve/pipe separator P Spring-loaded check valve R DHW circulation pump S Expansion vessel, suitable for drinking water Information on potable water filter According to DIN , a drinking water filter should be installed in systems with metal pipework. We also recommend the installation of a potable water filter when using plastic pipes, as per DIN 1988, to prevent contaminants entering the DHW system. Safety valve Protect the DHW cylinder by means of a safety valve against undue excess pressure. Recommendation: Install the safety valve higher than the top edge of the cylinder. This protects the valve against contamination, scaling and high temperatures. The DHW cylinder does not then need to be drained when working on the safety valve DHW cylinder selection DHW heating presents a completely different set of requirements to the provision of warmth for heating, as it is run all year round with more or less constant requirements in terms of heat volume and temperature level. The max cylinder storage temperature is limited subject to the heat pump used and the individual system configuration. Storage temperatures above this limit can be achieved by installing an additional immersion heater or an instantaneous heating water heater in the secondary circuit flow. Only use the immersion heater with soft to medium hard water up to 14 dh (hardness level 2 (medium), up to 2.51 mol/m 3 ). When selecting the DHW cylinder ensure that its indirect coil surface area is large enough for the purpose. DHW heating should preferably take place during the night after 22:00 h. This has the following advantages: The heat pump heating output is available for central heating during the daytime. Night tariffs can be utilised to the full. DHW cylinder heating and simultaneous drawing can be avoided. When using an external heat exchanger, the system may not always achieve the required draw-off temperatures because of the system design. VITOCAL VIESMANN 93

94 Design information (cont.) Max. cylinder storage temperature *9 Vitocal 300-A: 50 C Vitocal 350-A: 55 C The cylinder sizes shown in the table below are only intended as standard values that are based on a DHW requirement of 50 litres per person per day at a DHW temperature of 45 C. 10 Vitocal 3 to 5 occupants 3 to 5 occupants plus solar DHW heating 300-A Vitocell 300-B, type EVB, Vitocell 100-V, type CVW, 300 litre capacity 390 litre capacity Vitocell 100-V, type CVW, + solar heat exchanger set [indirect 390 litre capacity coils] Vitocell 100-B, type CVB, + Vitosolic litre capacity 350-A, type AWH-I/AWH-O 110 Vitocell 100-V, type CVW, 390 litre capacity 350-A, type AWH-I/AWH-O A, type AWH-I/AWH-O 120 Vitocell 100-V, type CVA 300 litre capacity + primary store system Vitocell 100-V, type CVA 300 litre capacity + primary store system Vitocell 100-V, type CVA 500 litre capacity + primary store system + Vitosolic 100 Vitocell 100-V, type CVA 500 litre capacity + primary store system + Vitosolic to 8 occupants Vitocell 100-V, type CVA, 500 litre capacity Vitocell 100-L, type CVL 500 litre capacity + primary store system Vitocell 100-L, type CVL 500 litre capacity + primary store system Vitocell 100-L, type CVL 500 litre capacity + primary store system To ensure the DVGW Code of Practice is fulfilled, an instantaneous heating water heater or second heat source should be installed, so that DHW temperatures reach > 60 C. Equipping the Vitocal 300-A with an instantaneous heating water heater fulfils this requirement. DHW cylinder specification See technical guides for DHW cylinders. Primary store system Due to the modulation ability of the Vitocal 300-A, use of a primary store system is not absolutely essential. With the Vitocal 350-A, we recommend the use of a primary store system at a heating output of 14 kw and above. Sizing the plate heat exchanger 55 C 60 C A DHW cylinder (domestic hot water) B Heat pump (heating water) 45 C 50 C Vitotrans 100 plate heat exchanger Flow rate and pressure drop at A35/W45 C Vitocal 350-A Output Flow rate Pressure drop Vitotrans 100 A B A B Type kw m 3 /h m 3 /h kpa kpa Part no. AWH-I/AWH-O AWH-I/AWH-O AWH-I/AWH-O Cylinder primary pump curves See page 56. *9 Cannot be achieved at low outside temperatures. 94 VIESMANN VITOCAL

95 Design information (cont.) System examples DHW cylinder with internal indirect coils WW WW WW rz rw er A rr KW Hydraulic scheme when using Vitocell 100-V, type CVW KW Hydraulic scheme when using Vitocell 100-B, type CVB, 300 litres or Vitocell 300-B, type EVB, 300 litre capacity 10 A Vitocal connection B Alternative installation of the immersion heater EHE at top or bottom KW Cold water WW DHW A Vitocal connection KW Cold water WW DHW Equipment required Pos. Description Quantity Part no. er Cylinder temperature sensor rw Spring-loaded check valve 1 on-site rr Immersion heater EHE 1 see Viessmann pricelist rz DHW circulation pump 1 see Vitoset pricelist ri DHW cylinder Vitocell 100-V, type CVW, 390 litre capacity 1 Z DHW cylinder with primary store system Recommended for Vitocal 350-A, type AWH-I/AWH-O 114/120. WW A Vitocal connection KW Cold water WW DHW KW Hydraulic scheme when using Vitocell 100-L, type CVL500 litre capacity VITOCAL VIESMANN 95

96 Design information (cont.) Equipment required Pos. Description Quantity Part no. ee Vitocell 100-L, 500 litre capacity 1 Z er Cylinder temperature sensor, top et Two-way motorised ball valve (N/C) ez Flow limiter (Taco Setter) 1 on-site eu Plate heat exchanger Vitotrans rw Spring-loaded check valve 2 on-site re Circulation pump for cylinder heating or rr Immersion heater EHE 1 see Viessmann pricelist rt Cylinder temperature sensor, bottom rz DHW circulation pump 1 see Vitoset pricelist DHW cylinder with primary store system and solar backup or external heat exchanger Recommended for Vitocal 350-A, type AWH-I/AWH-O 114/ WW WW A Vitocal connection B Use the DHW circulation connection C To the collector (see Vitosol technical guides) or external heat source KW Cold water WW DHW M HV HR KW KW Hydraulic scheme when using Vitocell 100-V, type CVA, 300/500 litre capacity Equipment required Pos. Description Quantity Part no. er Cylinder temperature sensor, top et Two-way motorised ball valve (N/C) ez Flow limiter (Taco Setter) 1 on-site eu Vitotrans 100 plate heat exchanger rw Spring-loaded check valve 2 on-site re Circulation pump for cylinder heating or rt Vitosolic 100 cylinder temperature sensor (part of the standard delivery of the Vitosolic) 1 Z rz DHW circulation pump 1 see Vitoset pricelist ro Vitocell 100-V DHW cylinder, type CVA, 300/500 litre capacity 1 Z /Z tp Threaded elbow for the Vitocell 100-V, type CVA, 300/500 litre capacity for fitting the cylinder temperature sensor / Cooling mode (only Vitocal 300-A) In cooling operation, the Vitocal 300-A operates in reverse mode, i.e. the processes of the heat pump circuit run in reverse order. Cooling is possible either through an underfloor heating circuit or via a separate cooling circuit, e.g. a fan convector. In cooling mode, heating water buffer cylinders must be bypassed via the three-way diverter valve. To prevent the formation of condensate, all visible components e.g. pipes, pumps, etc. must be thermally insulated with vapour diffusionproof material. For cooling mode in the following cases, a room temperature sensor must be installed and enabled: Weather-compensated cooling mode with room influence or room temperature-dependent cooling mode via an underfloor heating circuit (see "Operating modes") Cooling mode via a separate cooling circuit e.g. fan convector 96 VIESMANN VITOCAL

97 Design information (cont.) Operating modes Weather-compensated cooling mode In weather-compensated cooling mode, the set flow temperature is calculated from the relevant set room temperature and the current outside temperature (long-term average) according to the cooling curve. Its level and slope are adjustable. Room temperature-dependent cooling mode The set flow temperature is calculated from the differential of the set and actual room temperature. "Standard" operation The cooling output for the heating circuits is subject to either weathercompensated control according to the cooling curve, or room temperature-dependent control. "Fixed value" operation In "Fixed value" mode, the room is cooled with the minimum flow temperature. Cooling with an underfloor heating system The underfloor heating system can be used for heating and for cooling buildings and rooms. In a similar way to the heating curve, the cooling capacity can be regulated with a cooling curve. Surface temperature limits must be maintained to observe comfort criteria and to prevent condensation. The surface temperature of the underfloor heating system in cooling operation must not fall below 20 C. A contact humidistat (for capturing the dew point) must be integrated into the underfloor heating system flow to prevent condensation forming on the floor surface. This safely prevents the formation of condensate, even if weather conditions change quite rapidly (e.g.during a thunderstorm). The underfloor heating systems should be sized in accordance with a flow/return temperature pair of approx. 14/18 C. The following table can assist in estimating the possible cooling capacity of an underfloor heating system. In principle, the following applies: The minimum flow temperature for cooling with an underfloor heating system and the minimum surface temperature are subject to the prevailing climatic conditions in the room (air temperature and relative humidity). These must therefore also be taken into consideration during the design phase. 10 Estimating the cooling capacity of an underfloor heating system subject to floor covering and spacing between pipes (assumed flow temperature approx. 14 C, return temperature approx. 18 C; Source: Velta) Floor covering Tiles Carpet Spacing mm Cooling capacity with pipe diameter 10 mm W/m mm W/m mm W/m Details accurate for: Room temperature 25 C Relative humidity: 60 % Dew point temperature 16 C Cooling with fan convectors Vitoclima 200-C (accessory) Cooling operation possible either via separate cooling circuit or via a heating/cooling circuit. For max. cooling capacity, select operating mode "Fixed value". Select an installation location where the heat pump can be easily connected. Consider the connection of the condensate drain to the domestic drainage system or routing the condensate to the outside of the building. Power supply (1/N/PE,230 V/50 Hz) required. When creating wall outlets, consider supports, lintels and sealing elements (e.g. vapour barriers). Only fit appliances to solid level walls. Never install appliances near heat sources or places subject to direct solar irradiation. Install appliances only in locations with good air circulation. Ensure easy accessibility for service. Output matching The output of fan convectors can be modified. By changing the terminal connections, 3 of the available 5 speeds can be assigned to the three-stage speed selector of the fan convectors. The heating and cooling capacities available with the respective speeds are shown in the following table. VITOCAL VIESMANN 97

98 Design information (cont.) Test conditions Cooling capacity: At 27 C room temperature, 48% relative humidity, cooling the cooling water from 12 to 7 C. Rated output: At 20 C room temperature, flow temperature 50 C. Sound pressure level Measured at a distance of 2.5 m with a room volume of 200 m 3 and a reverberation time of 0.5 s. 11 Speed-dependent heating and cooling capacities Type Fan speed Air flow Cooling mode Heating mode Sound rate Total cooling capacity Sensible cooling Flow rate Pressure drop Heating output Flow rate Pressure drop pressure level capacity m 3 /h W W l/h kpa W l/h kpa db(a) V V V202H V V V V V V203H V V V V V V206H V V V V V V209H V V V Factory-set fan speed Heat pump control units 11.1 Accessories for the WPR 300 heat pump control unit Connecting cables (order separately) Plug-in electrical cables for connecting the heat pump to the control unit (in the building), comprising a 230 V~ control cable and LV cable. Cable lengths Vitocal 300-A 350-A 5 m Part no. Z Z m Part no. Z Z m Part no. Z Z Contactor relay Part no Contactor in small casing. With 4 N/C and 4 N/O contacts. With terminal strip for earth conductors VIESMANN VITOCAL

99 Heat pump control units (cont.) Specification Coil voltage Rated current (I th ) 230 V~/50 Hz AC1 16 A AC3 9 A Contact temperature sensor as system flow temperature sensor Part no For capturing the system flow temperature. Ø Specification Lead length IP rating 2.0 m IP 32 to EN 60529; ensure through appropriate design and installation Permissible ambient temperature during operation 0 to +120 C during storage and transport -20 to +70 C Cylinder temperature sensor Part no For DHW cylinders and heating water buffer cylinders. On-site extension of the connecting lead: 2-core lead, length max. 60 m with a cross-section of 1.5 mm 2 (copper) Never route this lead immediately next to 230/400 V cables Specification Lead length IP rating 3.75 m IP 32 to EN 60529; ensure through design/installation Viessmann Pt500 Sensor type Permissible ambient temperature during operation 0 to +90 C during storage and transport -20 to +70 C 11 Thermostat for controlling the swimming pool temperature Part no Specification Connection 3-core cable with a crosssection of 1.5 mm 2 Setting range 0 to 35 C Switching differential 0.3 K Breaking capacity 10(2) A 250 V~ Switching function with rising temperature from 2 to 3 R Stainless steel sensor well R½" x 200 mm Contact temperature sensor Part no For capturing the flow and return temperature. VITOCAL VIESMANN 99

100 Heat pump control units (cont.) Specification Lead length Protection 5.8 m, fully wired IP 32 to EN 60529; safeguard through appropriate design and installation Permissible ambient temperature during operation 0 to +120 C during storage and transport -20 to +70 C 11 Mixer motor Part no The mixer motor is mounted directly onto the Viessmann mixer DN 20 to 50 and R ½" to 1¼". With system plug. For wiring on site Specification Rated voltage 230 V~ Rated frequency 50 Hz Power consumption 4 W Protection class II Protection IP 42 to EN 60529; safeguard through appropriate design and installation Permissible ambient temperature during operation 0 to +40 C during storage and transport -20 to +65 C Torque 3 Nm Runtime for s Extension kit for one heating circuit with mixer with integral mixer motor Part no KM BUS user Components: Mixer electronics with mixer motor for Viessmann mixer DN 20 to 50 and R½" to 1¼" Flow temperature sensor (contact temperature sensor), lead length 2.2 m, fully wired, for specification, see below Connecting plug for the heating circuit pump Power supply cable (3.0 m long) BUS connecting cable (3.0 m long) The mixer motor is mounted directly onto the Viessmann mixer DN 20 to 50 and R ½" to 1¼". Mixer electronics with mixer motor Specification Rated voltage 230 V~ Rated frequency 50 Hz Power consumption 6.5 W Protection IP 32D to EN safeguard through appropriate design and installation Protection class I Permissible ambient temperature during operation 0 to +40 C during storage and transport -20 to +65 C Rated breaking capacity of the relay output for heating circuit pump sö 4(2) A 230 V~ Torque 3 Nm Runtime for min Flow temperature sensor (contact sensor) Secured with a tie. 100 VIESMANN VITOCAL

101 Heat pump control units (cont.) Specification Protection IP 32 to EN safeguard through appropriate design and installation Permissible ambient temperature during operation 0 to +120 C during storage and transport -20 to +70 C Extension kit for one heating circuit with mixer for separate mixer motor Part no KM BUS user For the connection of a separate mixer motor Components: Mixer electronics for the connection of a separate mixer motor Flow temperature sensor (contact temperature sensor), lead length 5.8 m, fully wired Connecting plug for the heating circuit pump Mixer motor terminals Power supply cable (3.0 m long) BUS connecting cable (3.0 m long) Mixer electronics Protection class I Permissible ambient temperature during operation 0 to +40 C during storage and transport -20 to +65 C Rated capacity of the relay outputs Heating circuit pump sö 4(2) A 230 V~ Mixer motor 0.2(0.1) A 230 V~ Required runtime of the mixer motor for 90 approx. 120 s Flow temperature sensor (contact sensor) Secured with a tie. Specification Rated voltage 230 V~ Rated frequency 50 Hz Power consumption 2.5 W Protection IP 32D to EN safeguard through appropriate design and installation Specification Protection IP 32 to EN safeguard through appropriate design and installation Permissible ambient temperature during operation 0 to +120 C during storage and transport -20 to +70 C Immersion thermostat Part no May be used as a maximum temperature limiter for underfloor heating systems. The temperature limiter is installed into the heating flow and switches the heating circuit pump OFF if the flow temperature is too high Specification Lead length 4.2 m, fully wired Setting range 30 to 80 C Switching differential max. 11 K Breaking capacity 6(1.5) A 250 V~ Setting scale inside the casing Stainless steel sensor well R ½" x 200 mm DIN reg. no. DIN TR or DIN TR VITOCAL VIESMANN 101

102 Heat pump control units (cont.) Contact thermostat Part no May be used as a maximum temperature limiter for underfloor heating systems (only in conjunction with metallic pipes). The temperature limiter is installed into the heating flow and switches the heating circuit pump OFF if the flow temperature is too high Specification Lead length 4.2 m, fully wired Setting range 30 to 80 C Switching differential max. 14 K Breaking capacity 6(1.5) A 250V~ Setting scale inside the casing DIN reg. no. DIN TR or DIN TR Information regarding the Vitotrol 200 A Vitotrol 200 can be used for each heating circuit. 11 Vitotrol 200 Part no KM BUS subscriber The Vitotrol 200 remote control regulates the heating program for one heating circuit and the required set room temperature in standard mode, from any room in the house. The Vitotrol 200 is equipped with backlit heating program selection keys as well as a party and economy key. The fault display shows faults on the control unit. WS function: Installation anywhere in the building. RS function: Installation in the main living room on an internal wall opposite radiators. Never install inside shelf units, recesses, immediately by a door or heat source (e.g. direct sunlight, fireplace, TV set, etc.). The integral room temperature sensor captures the actual room temperature and effects any necessary correction of the flow temperature as well as a rapid heat-up at the start of the heating operation (if appropriately programmed). Connection: 2-core lead, length max. 50 m (even if connecting several remote control units) Never route this lead immediately next to 230/400 V cables LV plug part of the standard delivery Specification Power supply via KM BUS Power consumption 0.2 W Protection class III Protection level IP 30 to EN 60529; safeguard through appropriate design and installation Permissible ambient temperature during operation 0 to +40 C during storage and transport 20 to +65 C Set room temperature range 10 to 30 C adjustable from 3 to 23 C or 17 to 37 C The set room temperature for reduced mode is adjusted at the control unit VIESMANN VITOCAL

103 Heat pump control units (cont.) Room temperature sensor Part no Separate room temperature sensor as supplement to the Vitotrol 200; to be used if the Vitotrol 200 cannot be installed inside the main living room or in a suitable position where the unit could capture and adjust the temperature. Installation in the main living room on an internal wall opposite radiators. Never install inside shelving units, in niches, or immediately by a door or heat source (e.g. direct sunlight, fireplace, TV set, etc.). Connect the room temperature sensor to the Vitotrol Connection: 2-core lead with a cross-section of 1.5 mm 2 (copper) Lead length from the remote control up to 30 m Never route this lead immediately next to 230/400 V cables 20 Specification Protection class III IP rating IP 30 to EN 60529; ensure through appropriate design/installation Permissible ambient temperature during operation 0 to +40 C during storage and transport -20 to +65 C External extension H1 Part no Function extension inside a casing for wall mounting. Using the extension enables the following functions to be achieved: Cascade control for up to 4 Vitocal appliances Swimming pool water heating function Minimum boiler water temperature demand External blocking Set boiler water temperature specified via a 0-10 V input External heating program changeover Specification Rated voltage 230 V~ Rated frequency 50 Hz Rated current 4 A Power consumption 4 W Protection class I IP rating IP 32 Permissible ambient temperature during operation 0 to +40 C Installation in living spaces or boiler rooms (standard ambient conditions) during storage and transport 20 to +65 C KM BUS distributor Part no For the connection of 2 to 9 devices to the KM BUS Specification Cable length 3.0 m, fully wired Protection IP 32 to EN 60529; safeguard through appropriate design and installation Permissible ambient temperature during operation 0 to +40 C during storage and transport -20 to +65 C Vitocom 100, type GSM Without SIM card Part no. Z With contract SIM card for the operation of the Vitocom 100 via mobile phone Part no. Z For further information regarding the conditions of contract, see the Viessmann pricelist. VITOCAL VIESMANN 103

104 Heat pump control units (cont.) Functions: Remote switching via GSM mobile phone networks Remote scanning via GSM mobile phone networks Remote monitoring via SMS to 1 or 2 mobile phones Remote monitoring of additional systems via digital input (230 V) Configuration: Mobile phones via SMS Standard delivery: Vitocom 100 (subject to order with or without SIM card) Power supply cable with Euro plug (2.0 m long) GSM aerial (3.0 m long), magnetic foot and adhesive pad KM BUS cable (3.0 m long) On-site requirements: Good reception for GSM communication of the selected mobile phone operator. Total length of all KM BUS subscriber cables up to 50 m. Specification Rated voltage 230 V ~ Rated frequency 50 Hz Rated current 15 ma Power consumption 4 W Protection class II Protection IP 41 to EN 60529; safeguard through appropriate design and installation Function Type 1B to EN Permissible ambient temperature during operation 0 to +55 C Installation in living spaces or boiler rooms (standard ambient conditions) during storage and transport -20 to +85 C On-site connection Fault input DE V~ Vitocom 200, type GP1 Part no: see current pricelist With integral GPRS modem. With D2 SIM card. For one heating system with one or more heat sources, with or without heating circuits downstream. For remote monitoring and remote setting of heating systems via mobile phone. SIM card LON connecting cable RJ45 RJ45, 7 m long, for data exchange between the Vitotronic and Vitocom 200 For standard delivery of packs with Vitocom, see pricelist. In conjunction with Vitodata 100 For remote reporting, remote monitoring and scanning of faults and/ or data points via the internet Remote switching and remote setting of parameters for heating systems via the internet Configuration The Vitocom 200 is configured via Vitodata 100. The pages for the Vitodata 100 user interface are created automatically during commissioning. Fault messages Fault messages are transmitted via the following communication services to the configured recipients: Text messages (SMS) to mobile phones to PC/laptop On-site requirements: Adequate GPRS radio signal for the D2 [Vodafone] mobile network at the location where the Vitocom 200 is installed LON communication module must be installed in the Vitotronic appliance For further information regarding the terms of contract, see the Viessmann pricelist. Standard delivery: Power cable (2 m long) with plug Aerial with 3 m connecting cable, magnetic foot and adhesive pad Specification Rated voltage 230 V ~ Rated frequency 50 Hz Rated current 22 ma Power consumption 5 VA Protection class II to DIN EN IP rating IP 20 to EN 60529; ensure through design/installation Function Type 1B to EN Permissible ambient temperature during operation 0 to +50 C Installation in living spaces or boiler rooms (standard ambient conditions) during storage and transport 20 to +85 C On-site connections: 104 VIESMANN VITOCAL

105 Heat pump control units (cont.) 2 digital inputs DE 1 and DE 2 Zero volt contacts, two-pole, 24 V, 7 ma 1 digital output DA1 Zero volt relay contact, 3-pole, changeover, 230 V~/30 V, max. 2 A For further technical details and accessories, see the data communication technical guide. For extended functions, operation with the Vitodata 300 user interface is also possible; see the data communication technical guide. Vitocom 300, type FA5, FI2, GP2 and LAN Part no: see current pricelist Type FA5 with integral analogue modem Type FI2 with integral ISDN modem Type GP2 with integral GPRS modem Type LAN2 with interface Ethernet 100 Base T For up to 5 heating systems with one or more heat sources, with or without heating circuits downstream. In conjunction with Vitodata 300 For remote reporting, remote monitoring and scanning of faults and/ or data points via the internet For remote switching, remote setting of parameters and codes for heating systems via the internet Configuration The Vitocom 300 is configured via the Vitodata 300. Fault messages Fault messages are reported to the Vitodata 300 server. These messages are transmitted via the following communication services from the Vitodata 300 server to the configured recipients: Fax Text messages (SMS) to mobile phones to PC/laptop On-site requirements: Telephone connection Type FA5: TAE socket, coding "6N" Type FI2: RJ45 socket (ISDN) Type GP2: Adequate GPRS radio signal for the D2 [Vodafone] mobile network at the location where the Vitocom 300 is installed Type LAN: Connection for IP network with VPN connection to the Vitodata 300 LON communication module must be installed in the Vitotronic appliance For further information regarding the terms of contract, see the Viessmann pricelist. Standard delivery: Standard module *10 (with 8 digital inputs, 1 digital output and 2 analogue sensor inputs) Type FA5: with integral analogue modem, Connecting cable for telephone socket TAE 6N, 2 m long Type FI2: with integral ISDN modem, Connecting cable with RJ45 plug for ISDN socket, 3 m long Type GP2: with integral GPRS modem, Aerial with connecting cable, 3 m long SIM card Type LAN: LAN connecting cable, 2 m long LON connecting cable RJ45 RJ45, 7 m long, for data exchange between the Vitotronic and Vitocom 300 Power supply unit *10 Power cable from the power supply unit to the standard module For standard delivery of packs with Vitocom, see pricelist. Accessories: Accessories Part no. Wall mounting enclosure for the installation of the Vitocom 300 module, if no control panel or electrical distribution panel is available 2 rows rows Extension module *10 10 digital inputs (8 zero volt, two 230 V~) analogue inputs (2 can be configured as pulsed inputs) 2 digital outputs see the standard module for dimensions or 10 digital inputs (8 zero volt, two 230 V~) analogue inputs (2 can be configured as pulsed inputs) 2 digital outputs 1 M BUS interface with connection of up to, for example, 16 M BUS capable heat meters with M BUS slave interface to EN see the standard module for dimensions Uninterruptible power supply unit *10 (UPS) Additional rechargeable battery pack *10 for UPS Recommended with 1 basic module, 1 extension module and all inputs allocated Required with: 1 standard module and 2 extension modules *10 Mounting rail installation TS35 to DIN EN , 35 x 15 and 35 x 7.5. VITOCAL VIESMANN 105

106 Heat pump control units (cont.) 11 Accessories Extension of the connecting cable Installation spacing 7 to 14 m 1 connecting cable (7 m long) and 1 LON coupling RJ45 Installation spacing 14 to 900 m with plug-in connector 2 LON plug-in connectors RJ45 and 2-core cable, CAT5, screened, solid cable, AWG 26-22, 0.13 to 0.32 mm 2, external diameter, 4.5 to 8 mm or 2-core cable, CAT5, screened, wire, AWG 26-22, 0.14 to 0.36 mm 2, external diameter, 4.5 to 8 mm Installation spacing 14 to 900 m with socket 2 connecting cables (7 m long) and 2 LON sockets RJ45, CAT6 2-core cable, CAT 5, screened or JY(St) Y 2 x 2 x 0.8 Standard module (standard delivery): Part no and and on-site or on-site and on-site or on-site Specification Rated voltage 24 V Rated current Type FA5 600 ma Type FI2 500 ma Type GP2 500 ma Protection class II to DIN EN IP rating IP 20 to EN 60529; ensure through appropriate design/installation Function Type 1B to EN Permissible ambient temperature during operation 0 to +50 C Installation in living spaces or boiler rooms (standard ambient conditions) during storage and transport -20 to +85 C On-site connections: 8 digital inputs DE 1 to DE 8 Zero volt contact, 2-pole, 24 V, max. 7 ma 1 digital output DA1 Zero volt relay contact, 3- pole, changeover, 230 V~/ 30 V, max. 2 A 2 analogue inputs AE 1 and AE 2 For Viessmann Ni500 temperature sensors, 10 to 127 ºC ±0.5 K Power supply unit (standard delivery): Specification Rated voltage 85 to 264 V ~ Rated frequency 50/60 Hz Rated current 0.55 A Output voltage 24 V Output current 1.5 A Protection class II to DIN EN IP rating IP 20 to EN 60529; ensure through appropriate design/installation Potential separation primary/secondary SELV to EN Electrical safety EN Permissible ambient temperature for operation with supply voltage U E -20 to +55 C 187 to 264 V Installation in living spaces or boiler rooms (standard ambient conditions) for operation with supply voltage U E 100 to 264 V -5 to +55 C Installation in living spaces or boiler rooms (standard ambient conditions) during storage and transport -25 to +85 C For further technical details and accessories, see the data communication technical guide. LON communication module Part no PCB for data exchange. For connecting a Vitocom 200 or 300 to the heat pump control unit. 106 VIESMANN VITOCAL

107 Heat pump control units (cont.) LON connecting cable for data exchange between control units Part no Cable length 7 m, fully wired (RJ 45). Extension of the connecting cable Installation spacing 7 to 14 m: 1 connecting cable (7 m long) Part no and 1 LON coupling RJ45 Part no Installation spacing 14 to 900 m with plug-in connector: 2 LON plug-in connector RJ45 Part no and 2-core cable, CAT5, screened, solid cable, AWG 26-22, 0.13 to 0.32 mm 2, external diameter, 4.5 to 8 mm on-site or 2-core cable, CAT5, screened, wire, AWG 26-22, 0.14 to 0.36 mm 2, external diameter, 4.5 to 8 mm on-site Installation spacing 14 to 900 m with sockets: 2 connecting cables (7 m long) Part no and 2 LON sockets RJ45, CAT6 Part no core cable, CAT 5, screened on-site or JY(St) Y 2 x 2 x 0.8 on-site and 12 Terminator Part no pce To terminate the LON BUS at the first and last LON user. Appendix 12.1 Regulations and Directives When designing, installing and operating the system, observe the following standards and directives in particular: VITOCAL VIESMANN 107

108 Appendix (cont.) General regulations and directives BImSchG Legislation on the restriction of sound emissions (Germany: TA Lärm) DIN 4108 DIN 4109 VDI 2067 VDI 2081 VDI 2715 VDI 4640 EN DIN EN Federal Immission Act [Germany] heat pumps are "Systems" according to the Federal Immission Act. The BImSchG [Germany] draws a distinction between systems that require approval and those that do not (paras. 44, 22). The systems that are subject to approval are listed in the 4th Federal Immission Protection Order (Bundesimmissionsschutzverordnung, 4. BImSchV). Heat pumps of any kind are not subject to this order. This means that heat pumps are subject to paras. 22 to 25 BImSchG [in Germany], i.e. they must be set up and operated in a way that ensures that avoidable disturbances are restricted to a minimum. For noise emissions emanating from heat pump systems, observe all applicable noise protection requirements. Thermal protection in building structures Noise protection in building structures Efficiency calculation for energy consumers, operational and economic principles Noise reduction in air-handling units Noise reduction in hot water and heating systems Technical utilisation of the ground; ground-coupled heat pump systems Sheet 1 and Sheet 2 (for brine/water and water/water heat pumps) Heating systems in buildings process for calculating the standard heat load Heating systems upstream of buildings Designing heating systems with heat pumps Regulations concerning the water side DIN 1988 DIN 4807 DVGW Code of Practice W101 DVGW Code of Practice W551 EN 806 EN Technical rules for drinking water installations Expansion vessels part 5: Sealed expansion vessels with diaphragm for DHW heating systems Guidelines for protected drinking water areas Part 1: Areas where groundwater is protected (for water/water heat pumps) DHW heating and pipework systems; Technical measures for the reduction of the development of legionella bacteria Technical rules for drinking water installations Heating systems in buildings; Designing/engineering hot water heating systems 12 Regulations concerning the electrical side Make the electrical connection and installation compliant with VDE regulations (DIN VDE 0100) [or local regulations] and the technical connection requirements laid down by your local power supply utility. VDE 0100 VDE 0105 EN and -40 (VDE and -40) DIN VDE 0730part 1/3.72 Installation of HV systems with rated voltages up to 1000 V Operation of HV systems Safety of electrical equipment for domestic use and similar purposes Regulations regarding equipment with electric motor drive for domestic use Regulations concerning the refrigerant side DIN 8901 DIN 8960 DIN EN 378 Refrigerating systems and heat pumps; protection of the ground, ground and surface water Technical safety and environmental requirements and tests Refrigerant, requirements Refrigerating systems and heat pumps Technical safety and environmental requirements Additional standards and regulations for dual mode heat pump systems VDI 2050 DIN EN Heating centres, technical principles for design and implementation Design of heating systems with heat pumps 12.2 Glossary Defrosting Removing hoarfrost and ice from an evaporator of air/water heat pumps by supplying heat (for Viessmann heat pumps, defrosting is implemented according to demand by the refrigerant circuit). Alternative operation Covering the heat demand with the heat pump exclusively on days with a low heat load (e.g. at Q N buil < 50 %). A different heat source covers the heat demand on all other heating days. Refrigerant Term for refrigerants in heat pump systems. Performance factor Quotient of heating energy and compressor drive load over a fixed period, e.g. one year. Symbol: β 108 VIESMANN VITOCAL

109 Appendix (cont.) Dual mode heating Heating system that covers the central heating demand of a building by means of two different heat sources (e.g. through the heat pump, the energy output of which is supplemented by a second, combustion heat source). Expansion valve Heat pump component between the condenser and the evaporator for reducing the condenser pressure to the evaporation pressure corresponding to the evaporation temperature. In addition, the expansion device regulates the injection volume of the process medium, subject to the evaporator load. Heating output The heating output is the available heat delivered by the heat pump. Refrigerating capacity Heat flow extracted from a heat source by the evaporator. Refrigerant Material with a low boiling point that is evaporated by heat absorption and re-liquefied through heat transfer in a circular process. Circular process Constantly recurring changes in the condition of a refrigerant by adding and extracting energy in a sealed system. Cooling capacity The cooling capacity is the available heat extracted by the heat pump from the cooling circuit. Coefficient of performance (COP) Quotient derived from the heating output and the compressor drive load. The coefficient of performance can only be given as a temporary value under specific operating conditions. Symbol: Performance factor EER (Energy Efficiency Rating) Ratio of cooling capacity and compressor drive output. The performance factor can only be given as a temporary value at specific operating conditions. Symbol: Mono-energetic Dual mode heat pump system, where the second heat source is operated with the same type of energy (electric power). Mono-mode The heat pump is the sole heat source. This operating mode is suitable for all low temperature heating systems up to 55 ºC flow temperature. natural cooling Energy-saving cooling method utilising the ground as a heat sink. Rated power consumption The maximum power consumption of the heat pump in constant operation under defined conditions. This value is only relevant for the electrical connection to the power supply system and is stated by the manufacturer on the type plate. Efficiency Factor derived from the utilised and related expended work or heat. Parallel operation Operating mode of the dual mode heating system with heat pumps; the heat demand is largely covered on all heating days by the heat pump. Alternative heat sources cover the peak demand in "parallel" to the heat pump on only a few heating days of the year. Reversible operation In the reversible operation, the process steps in the refrigerant circuit are reversed, i.e. the evaporator functions as condenser and viceversa, in other words, the heat pump extracts heat from the heating circuit. The refrigerant circuit is reversed to defrost the evaporator. Evaporator Heat exchanger of a heat pump, where heat is extracted from the heat source by evaporating a refrigerant. Compressor Machine for the mechanical transportation and compression of vapours and gases. Differentiation according to the type of construction. Condenser Heat exchanger of a heat pump, where heat is transferred to a heat transfer medium by liquefying a refrigerant. Heat pump Technical equipment that absorbs a thermal flow at a low temperature (cold side) and transfers it through energy supplied at a higher temperature (hot side). Appliances using the "cold side" are known as refrigerators; appliances using the "hot side" are referred to as heat pumps. Heat pump system The complete system, comprising a heat source system and a heat pump. Heat source Medium (ground, air, water) from where the heat pump extracts energy. Heat source system (HSS) Equipment for the extraction of energy from a heat source and the transportation of the heat transfer medium between the heat source and the "cold side" of the heat pump, incl. all auxiliary equipment. Heat transfer medium Liquid or gaseous medium (e.g. water or air) for transporting heat Overview - engineering steps for a heat pump system At a "checklist for generating a quotation for a heat pump" is available for downloading. For this, click on the following links in sequence: Ú "Login" Ú "Start Login" VITOCAL VIESMANN 109

110 Appendix (cont.) Ú "Technical Documentation" Ú "Checklists" Recommended procedure: 1. Determining the building details Calculating the precise building heat load to DIN 4701/ EN Determine the hot water requirements. Define the mode of heat delivery (radiators or underfloor heating). Specify the system temperatures of the heating system (target: low temperatures). 2. Sizing the heat pump (see sizing) Define the heat pump operating mode (mono-mode, mono-energetic). Consider possible power-off periods imposed by the power supply utility. Determining and sizing the heat source. Sizing the DHW cylinder. 3. Determine the legal and financial framework conditions Approval procedure for the heat source (only for geothermal probes or wells) Clarify the options for aid from central or regional government bodies. Förderdatenbank at includes up-to-date details of almost all subsidy programmes in the Federal Republic of Germany. Power tariffs and subsidies from the local power supply company. Possible noise disturbance of neighbours (particularly in the case of air source heat pumps). 4. Determine the responsibilities and interfaces Heat source for heat pump (for brine/water or water/water heat pumps) Heat source(s) for the heating system. Electrical installation (heat source). Clarify the structural conditions (see also point 5). 5. Engage drilling contractor (only brine/water or water/water heat pumps) Sizing the geothermal probe (drilling contractor). Concluding a service contract. Implementing the drilling work. 6. Structural conditions (only air/water heat pumps) For indoor installation: Check the structural calculations for the wall outlet; then make the wall outlet. For outdoor installation: Design and construct the foundations in accordance with local conditions and the standard rules of building engineering. 7. Electrical work Apply for a meter. Install the power and control cables. Create meter locations Calculating the seasonal performance factor See online forms at or 12 To open the online forms at click on the following links in sequence: Ú "Login" Ú "Start Login" Ú "Software service" Ú "Online tools" Ú "HP seasonal performance factor" Ú "Calculating the seasonal performance factor SPF of the heat pump" 110 VIESMANN VITOCAL

111 Keyword index 3 3-way diverter valve...51 A Airborne noise...9, 11 Air connection set...41, 49 Air duct, 58, 76 Bend , 49 Air duct, straight...42, 50 Air ducts...41, 49 Air routing...58, 76 Alternative operation Annual heat load...6 Antifreeze...65, 81 Application procedure (details)...89 B Blocking time...90 Booster heater...46, 55 C Cables...69, 86 Circular process Circulation pump for cylinder heating...38 Coefficient of performance...8 Coefficient of performance (COP) Coefficient of Performance (COP) Coil surface area...93 Compressor Compressor drive load Condensate...97 Condensate drain...58, 66, 68, 69, 75, 82, 85, 86 Frost protection...68, 85 Condenser Connecting cables, 98 electrical...6, 98 Connection pipe hydraulic...70, 87 Connection set...40 Contact thermostat Control unit...69, 70, 86, 87, 89 Cooling capacity...97, 109 Cooling capacity of an underfloor heating system...97 Cooling mode...96 Operating modes...97 room temperature-dependent...97 weather-compensated...97 Cooling with an underfloor heating system...97 Cooling with fan convectors...97 D Defrosting DHW cylinder...93 DHW cylinder selection...93 DHW demand...90 DHW heating...93 Directives Directivity...10 Diverter valve...45, 51 Draining condensate via a drainage system...68, 85 via a soakaway...68, 85 Drain valves...69, 86 Drying buildings...7 Dual mode alternative operation...7 Dual mode heating operation Dual mode operation...6 Dual mode parallel operation...7 Dual mode point...90 E Efficiency Electrical connecting cables...6 Electrical connections electrical...69, 86 hydraulic...69, 86 Electrical demand...89 Electrical power...8 Electricity meter...62, 71, 80, 88 Energy Efficiency Rating (EER) Entire output demand...7 Evaporator Expansion valve External extension H External heat source...6, 108, 109 External installation Frost protection...65, 81 Positioning information...65, 81 Extract air duct...5 F Fan convectors...47, 97 Federal tariffs [Germany]...89 Fill & drain facility...69, 86 Flow noise...59, 76 Frost protection...65, 69, 81, 86 G Glossary H Heat distribution system...6 Heat exchanger...56 Heating circuit pump...38 Heating output...89, 109 Heating water buffer cylinder...92 Heat load...89, 108 Heat pump sizing...89 Heat pump system Heat source Heat source system (HSS) Heat transfer medium Hydraulic connection set...6, 40, 92 Hydraulic pipes...69, 86 I Immersion heater...46, 93 Immersion thermostat Impressed current anode...46, 56 Information regarding external installation...65, 81 Information regarding internal installation...57, 74 Instantaneous heating water heater...90, 93 Internal installation Positioning information...57, 74 Vitocal 300-A...57 Vitocal 350-A...74 K KM BUS distributor L Light well...59, 62, 76, 79 Liquid-borne noise...9 VITOCAL VIESMANN 111

112 Keyword index M Mixer extension Integral mixer motor Separate mixer motor Mixer extension kit Integral mixer motor Separate mixer motor Mono-energetic Mono-energetic operating mode...6 Mono-energetic operation...5, 90 Mono-mode Mono-mode operation...5, 6 Motorised ball valve...56 N natural cooling O Operating mode dual mode...6 dual mode alternative...7 dual mode parallel...7 mono-energetic...5, 6, 90 mono-mode...5, 6 Operating modes, cooling...97 Operating point...8 Output matching, cooling...97 Output matching, fan convectors...97 Oversizing...89 Overview - engineering steps for a heat pump system P Parallel operation Performance factor...8, 108, 110 Performance factor EER Pipe liner...40, 69, 86 Planning a heat pump system Plate heat exchanger...56 Positioning information...57, 65, 74, 81 Power cable...63, 69, 71, 80, 86, 88 Power-OFF...7, 89, 92 Power-OFF period...7, 89, 90, 92 Power-OFF time...89 Power supply...63, 69, 71, 80, 86, 88, 89 Power supply utility...69, 86 Power tariffs...89 Primary circuit accessories Vitocal 300-A...41 Vitocal 350-A...49 Product information Accessories...38 Cylinder...30 Vitocal 300-A, type AWC-I and AW-O...12 Vitocal 300-A, type AWC-I-M and AW-O-M...12 Vitocal 350-A, type AWH-I and AWH-O...20 Vitocal 350-A, type AWH-I-M and AWH-O-M...20 Propagation of sound...11 R Rated power consumption Refrigerant...108, 109 Refrigerating capacity Regulations dual mode systems on the electrical side on the refrigerant side on the water side Regulations concerning the electrical side Regulations concerning the refrigerant side Regulations concerning the water side Reversible operation Room temperature-dependent cooling mode...97 Room temperature sensor S Safety equipment...46 Safety equipment block...45, 51 Screed drying...8 Seasonal performance factor...6, 8, 92 Secondary circuit circulation pump...38 Secondary circuit pump...38 Sensor lead...69, 86 Shutting down the system...65, 81 Silencer hood...44, 50 Sizing the heat pump...89 Solar heat exchanger set...45, 55 Sound...8, 58, 73, 76 Sound/noise...58, 76 Sound absorption...10 Sound emission...9, 11 Sound immission...11 Sound power level...9, 10 Sound pressure level...9, 10, 11 Sound reflection...10 Sound source...9 Sound transmission...11 Spacing for underfloor heating systems...97 Standard heat load of the building...89 Structure-borne noise...9, 11, 58, 73, 76 Supplement for DHW heating...90 Supplement for setback mode...90 T Technical connection requirements...62, 71, 80, 88 Temperature sensor Room temperature Thermostat Contact temperature Immersion temperature Three-way diverter valve...45, 51 U Underfloor heating system...97 V Ventilation air duct...5 Vitocom 100, type GSM , type GP , type FA5, FI2, GP2 and LAN Vitotrol VIESMANN VITOCAL

113 Keyword index W Wall duct...69, 86 Wall outlet...58, 62, 76, 79 Wall outlet, straight...42, 50 Wall outlet set...41, 49 Wall seal flange...40 Wall seal ring...40 Weather-compensated cooling mode...97 Weather grille...43, 50, 58, 59, 76 Wind loads...67 Y Yielding heat...5 VITOCAL VIESMANN 113

114 114 VIESMANN VITOCAL

115 VITOCAL VIESMANN 115

116 Printed on environmentally friendly, chlorine-free bleached paper Subject to technical modifications. Viessmann Werke GmbH&Co KG D Allendorf Telephone: Fax: Viessmann Limited Hortonwood 30, Telford Shropshire, TF1 7YP, GB Telephone: Fax: VIESMANN VITOCAL

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