Heat pump with electric drive, 1 and 2-stage, brine/water heat pump: 20.5 to 84.6 kw, with conversion kit to water/water heat pump: 25.4 to 104.6 kw (92 pages)
Compact heat pump with electric drive, type awc-i, awc-i-m, aw-o, aw-o-m (60 pages)
Summary of Contents for Viessmann Vitocal 350-G
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VIESMANN Installation and service instructions for contractors Vitocal 350-G Type BW/WW 351.A18 Type BWS 351.A18 Heat pumps with electric drive, 1 and 2-stage For applicability, see the last page VITOCAL 350-G Please keep safe. 5609 670 GB 4/2011...
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Safety instructions Safety instructions Please follow these safety instructions closely to prevent accidents and mate- rial losses. Safety instructions explained ■ The Code of Practice of relevant trade associations Danger ■ All current safety regulations as This symbol warns against the defined by DIN, EN, DVGW, VDE and risk of injury.
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Please note Repairing components that fulfil a safety function can compromise the safe operation of your sys- tem. Replace faulty components only with original Viessmann spare parts. Auxiliary components, spare and wearing parts Please note Spare and wearing parts that...
Index Index Installation instructions Preparing for installation Use........................Product information....................General information on the electrical connection..........Installation......................Overview of possible system schemes..............12 Designations in the system examples..............14 Primary circuit, type BW 351.A18 (brine/water)........... 15 Primary circuit, type WW 351.A18 (water/water)..........17 Primary circuit type BW 351.A18 + type BWS 351.A18 (2-stage)......
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Index Index (cont.) Assembly, base frame, type BW/WW 351.A18............ 133 Parts lists, type BWS 351.A18................135 Overview of assemblies, type BWS 351.A18............136 Parts not shown, type BWS 351.A18..............137 Assembly, casing, type BWS 351.A18..............137 Assembly, electrical equipment, type BWS 351.A18........... 139 Assembly, heat pump module, type BWS 351.A18..........
BWS 351.A18 can be used for the following purposes: Note ■ Central heating and cooling via a heat- The Vitocal 350-G is exclusively inten- ing system ded for domestic use, i.e. even individu- ■ DHW heating als that have not been instructed in its ■...
Preparing for installation Product information (cont.) Type BWS 351.A18 (heat pump stage 2) The heat pump stage 2 has a separate With the 2-stage version, either a sepa- refrigerant circuit with EEV controller, but rate primary pump can be used for both no separate heat pump control unit.
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Preparing for installation Installation (cont.) Never put weight on top of the Please note appliance. If the compressor inside the heat pump is at a steep angle, oil will enter the refrigerant circuit and damage the appliance. Max. tilting angle 45°. Installation room requirements Please note ■...
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Preparing for installation Installation (cont.) 2-stage (type BW 351.A18 + type BWS 351.A18) ≥ 400 ≥ 400 = 300 A Clearance subject to installation and site conditions...
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Preparing for installation Installation (cont.) Requirements for on-site connections Single stage (type BW 351.A18) 230 V < 42 V 400 V...
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Preparing for installation Installation (cont.) 2-stage (type BW 351.A18 + type BWS 351.A18) 230 V < 42 V 230 V < 42 V 400 V 400 V = 300 ■ Install hydraulic connections on site stress-free. ■ Establish hydraulic connections between the two heat pumps (type BW/BWS 351.A18) on site.
Preparing for installation Installation (cont.) Line lengths in the heat pump plus wall clearance: Type BW 351.A18 BWS 351.A18 Heat pump control unit 1.0 m A connecting cable is used power supply (230 V~) for the power supply Compressor power supply 1.0 m 1.0 m (400 V~)
Preparing for installation Designations in the system examples -2/145- --2/F14-- --2/F14-- --2/X3.8;3.9-- --2/211.2-- --2/212.3-- -2/211.4- --2/F8-- --A/137--...
Preparing for installation Primary circuit, type BW 351.A18 (brine/water) Hydraulic installation scheme --2/X3.8;3.9-- ----- Required equipment Pos. Description Heat pump Heat pump control unit Primary pump Brine accessory pack Pressure switch, primary circuit Brine distributor for geothermal probes/collectors Geothermal probes/collectors...
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Preparing for installation Primary circuit, type BW 351.A18 (brine/water) (cont.) Electrical installation scheme For an overview of the electrical connec- tions and more information on the PCBs, see from page 69 and the separate service instructions, Vitotronic 200 heat pump control unit. 200 W 211.1 X2.N...
Preparing for installation Primary circuit, type WW 351.A18 (water/water) Hydraulic installation scheme --2/X3.8;3.9-- ----- --2/X3.8;3.9-- ---------...
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Preparing for installation Primary circuit, type WW 351.A18 (water/water) (cont.) Equipment required Pos. Designation Heat pump Heat pump control unit Primary pump Frost stat, primary circuit Brine accessory pack Pressure switch, primary circuit Separating heat exchanger, primary circuit Flow limiter, well circuit (remove jumper when connecting) Dirt trap Well pump (suction pump for groundwater;...
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Preparing for installation Primary circuit, type WW 351.A18 (water/water) (cont.) With well pump connection 230 V~ 200 W 211.1 X2.N X3.3 230 V; 2 mA X3.4 X3.9 230 V; 0.15 A X3.8 230 v; 0.15 A On-site well pump connection 400 V~ 200 W 211.1 X2.N...
Preparing for installation Primary circuit type BW 351.A18 + type BWS 351.A18 (2-stage) With two primary pumps Hydraulic installation scheme --F2-- --2/X3.8;3.9-- --2/224.2-- --2/211.1-- --F3--...
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Preparing for installation Primary circuit type BW 351.A18 + type BWS 351.A18 (2-stage) (cont.) Equipment required Pos. Description Heat pump stage 1 Heat pump control unit Heat pump stage 2 Primary pump, heat pump stage 1 Flow temperature sensor, primary circuit Return temperature sensor, primary circuit Brine accessory pack Pressure switch, primary circuit...
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Preparing for installation Primary circuit type BW 351.A18 + type BWS 351.A18 (2-stage) (cont.) 200 W 211.1 X2.N 200 W 224.2 X2.N X3.9 230 V; 0.15 A X3.8 PT500 PT500 With a common primary pump Note If heat pumps stage 1 and 2 (types BW 351.A18 + BWS) are installed with dif- ferent rated heating outputs, the different flow rates mean that two primary pumps...
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Preparing for installation Primary circuit type BW 351.A18 + type BWS 351.A18 (2-stage) (cont.) Hydraulic installation scheme --F2-- --2/X3.8;3.9-- --F3--...
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Preparing for installation Primary circuit type BW 351.A18 + type BWS 351.A18 (2-stage) (cont.) Equipment required Pos. Designation Heat pump stage 1 Heat pump control unit Heat pump stage 2 Common primary pump Primary circuit flow temperature sensor (for installation, see page 87) Primary circuit return temperature sensor (for installation, see page 87) Brine accessory pack...
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Preparing for installation Primary circuit type BW 351.A18 + type BWS 351.A18 (2-stage) (cont.) 211.1 200 W 224.2 X2.N X3.9 230 V; 0.15 A X3.8 PT500 PT500...
Preparing for installation Primary circuit type WW 351.A18 + type BWS 351.A18 (2-stage) With two primary pumps Hydraulic installation scheme --F2-- --2/X3.8;3.9-- --2/224.2-- --2/211.1-- --F3-- --2/X3.8;3.9-- ---------...
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Preparing for installation Primary circuit type WW 351.A18 + type BWS 351.A18 (2-stage) (cont.) Equipment required Pos. Designation Heat pump stage 1 Heat pump control unit Heat pump stage 2 Primary pump, heat pump stage 1 Primary circuit flow temperature sensor (for installation, see page 87) Primary circuit return temperature sensor (for installation, see page 87) Frost stat, primary circuit...
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Preparing for installation Primary circuit type WW 351.A18 + type BWS 351.A18 (2-stage) (cont.) On-site well pump connection 230 V~ 200 W 211.1 X2.N 200 W 224.2 X2.N X3.1 X2.N...
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Preparing for installation Primary circuit type WW 351.A18 + type BWS 351.A18 (2-stage) (cont.) On-site well pump connection 400 V~ 200 W 211.1 X2.N 200 W 224.2 X2.N X3.1 X2.N Connecting the sensors and limiters X3.3 230 V; 2 mA X3.4 X3.8 230 V;...
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Preparing for installation Primary circuit type WW 351.A18 + type BWS 351.A18 (2-stage) (cont.) With a common primary pump Note If heat pumps stage 1 and 2 (types WW 351.A18 + BWS) are installed with dif- ferent rated heating outputs, the different flow rates mean that two primary pumps must be used (see page 26).
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Preparing for installation Primary circuit type WW 351.A18 + type BWS 351.A18 (2-stage) (cont.) Hydraulic installation scheme --F2-- --F3-- --2/X3.8;3.9-- ---------...
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Preparing for installation Primary circuit type WW 351.A18 + type BWS 351.A18 (2-stage) (cont.) Equipment required Pos. Designation Heat pump stage 1 Heat pump control unit Heat pump stage 2 Common primary pump Primary circuit flow temperature sensor (for installation, see page 87) Primary circuit return temperature sensor (for installation, see page 87) Frost stat, primary circuit...
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Preparing for installation Primary circuit type WW 351.A18 + type BWS 351.A18 (2-stage) (cont.) On-site well pump connection 400 V~ 211.1 224.2 200 W X2.N X2.N Connecting the sensors and limiters X3.3 230 V; 2 mA X3.4 X3.8 230 V; 0.15 A X3.9 230 v;...
Preparing for installation DHW heating Hydraulic installation scheme --2/212.3-- --2/F6-- --2/211.4-- Solar interface WW Domestic hot water KW Cold water Required equipment Pos. Designation Heat pump Heat pump control unit Secondary pump Circulation pump for cylinder heating...
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Preparing for installation DHW heating (cont.) Pos. Designation DHW cylinder Cylinder temperature sensor Cylinder primary pump (DHW side) Plate heat exchanger Flow limiter Motorised 2-way valve, normally closed DHW circulation pump Electrical installation scheme For an overview of the electrical connec- tions and more information on the PCBs, see from page 69 and the separate service instructions for the...
Preparing for installation DHW heating (cont.) Parameter Setting "System definition" ■ "System scheme 7000" "0" / "2" / "4" / "6" / "8" / "10" DHW heating: "Time program DHW" Set time program (see oper- ating instructions) "Time prog. DHW circ." Set time program (see oper- ating instructions) "DHW"...
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Preparing for installation Integrating the 2-stage version in the system… (cont.) Hydraulic installation scheme --2/224.3-- --2/211.2-- ------ ------ --2/F2-- --2/F3-- --2/F0--...
Preparing for installation Integrating the 2-stage version in the system… (cont.) C Interface to the separate cooling cir- P Interface to the primary circuit cuit or heating/cooling circuit W Interface to the DHW cylinder H Interface to the heating circuits or the heating water buffer cylinder Equipment required Pos.
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Preparing for installation Integrating a heat pump cascade into the system… (cont.) The following communication modules (accessories) must be fitted in the heat pump control units: – LON communication module for the cascade in the lead appliance – LON communication module in lag heat pumps ■...
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Preparing for installation Integrating a heat pump cascade into the system… (cont.) Hydraulic installation scheme example: Heat pump cascade with 2-stage heat pumps...
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Preparing for installation Integrating a heat pump cascade into the system… (cont.) Interface to the separate cooling Interface to the DHW cylinder circuit or heating/cooling circuit Lead appliance (2-stage) of the Interface to the heating circuits heat pump cascade or the heating water buffer cylin- II to IV Lag heat pumps 1 to 3, each 2- stage Interface to the primary circuit...
Preparing for installation Integrating a heat pump cascade into the system… (cont.) 130 W 224.5 X2.N 130 W 211.4 X2.N 130 W 211.2 X2.N 200 W 211.1 X2.N 200 W 224.2 X2.N 130 W 224.3 X2.N Pt500 Pt500 Ni500 System example 1, ID: 4605307_1006_01 Selecting system scheme 8 ■...
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Preparing for installation System example 1, ID: 4605307_1006_01 (cont.) Pos. Designation Heat generator Heat pump Heat pump control unit Vitotronic 200, type WO1B Outside temperature sensor ATS Circulation pump for cylinder heating UPSB (on the heating water side) Secondary pump KM BUS distributor Safety equipment block with safety assembly Expansion vessel...
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Preparing for installation System example 1, ID: 4605307_1006_01 (cont.) Pos. Designation Heating water buffer cylinder Heating water buffer cylinder Buffer temperature sensor PTS System flow temperature sensor VTS Solar buffer temperature sensor (connection S4 to Vitosolic) Solar circuit pump R4 for charging the heating water buffer cylinder High limit safety cut-out for heating water buffer cylinder to shut down the solar circuit pump R4 zZ Heating circuit with mixer M2/HC2...
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Preparing for installation System example 1, ID: 4605307_1006_01 (cont.) 200 W 211.1 X2.N 130 W 211.4 X2.N 50 W 212.3 X2.N 130 W 211.2 X2.N 130 W 224.6 X2.N 225.3 OPEN X2.N CLOSED 225.2 100 W 225.1 UP M2 X2.N X3.9 230V;...
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Preparing for installation System example 1, ID: 4605307_1006_01 (cont.) H1;2 230 V/ 50 Hz 1 / N / PE UP M3 230 V/ 50 Hz...
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Preparing for installation System example 1, ID: 4605307_1006_01 (cont.) PT500 PT500 PT500 Ni500 PT500 VTS M2 Control unit power supply Compressor power supply 3 / PE X3.18 400 V, 50 Hz 1 / N / PE X2.1 230 V, 50 Hz X1.1 A Mains terminals on the cross con- nect PCB...
Preparing for installation System example 1, ID: 4605307_1006_01 (cont.) Parameters Setting "System definition" ■ "System scheme 7000" "6" ■ "Common flow temperature sensor system "1" 701B" "Solar" ■ "Type solar control unit 7A00" "2" Note Vitosolic parameters must be set (see Vitosolic instal- lation and service instructions) DHW heating: "Time program DHW"...
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Preparing for installation System example 2, ID: 4605308_1006_01 (cont.) Pos. Designation Heat generator Heat pump stage 1 Heat pump control unit Vitotronic 200, type WO1B Outside temperature sensor ATS Circulation pump for cylinder heating UPSP (on the heating water side) for heat pump stage 1 Secondary pump for heat pump stage 1 KM BUS distributor...
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Preparing for installation System example 2, ID: 4605308_1006_01 (cont.) Pos. Designation External heat generator High limit safety cut-out (STB) for switching off secondary pumps 6 and External heat generator, e.g. oil boiler External heat generator demand (connection to external heat generator) Circulation pump for cylinder reheating Boiler water temperature sensor (connection to heat pump control unit) Directly switched mixer motor...
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Preparing for installation System example 2, ID: 4605308_1006_01 (cont.) Pos. Designation Heating circuit without mixer A1/HC1 Radiator circuit Remote control Vitotrol 200A (accessory) Heating circuit pump Heating circuit with mixer M2/HC2 Underfloor heating circuit with directly switched mixer motor Remote control Vitotrol 200A (accessory) Flow temperature sensor Temperature limiter to restrict the maximum temperature of underfloor heating systems...
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Preparing for installation System example 2, ID: 4605308_1006_01 (cont.) 200 W 211.1 X2.N 100 W 212.2 UP A1 X2.N 130 W 211.4 X2.N 50 W 212.3 X2.N 130 W 211.2 X2.N 224.7 X2.N 130 W 224.6 X2.N 225.3 OPEN X2.N CLOSED 225.2 100 W...
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Preparing for installation System example 2, ID: 4605308_1006_01 (cont.) H1;2 230 V/ 50 Hz 1 / N / PE 230 V/ 50 Hz 1 / N / PE 230 V/ 50 Hz 1 / N / PE 400 V, 50 Hz...
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Preparing for installation System example 2, ID: 4605308_1006_01 (cont.) PT500 PT500 PT500 PT500 Ni500 PT500 VTS M2 PT500 PT500 Control unit power supply Compressor power supply 3 / PE X3.18 400 V, 50 Hz 1 / N / PE X2.1 230 V, 50 Hz X1.1 A Mains terminals on the cross con-...
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Preparing for installation System example 2, ID: 4605308_1006_01 (cont.) Parameters Setting "System definition" ■ "System scheme 7000" "6" ■ "Swimming pool 7008" "1" ■ "External extension 7010" "1" ■ "Common flow temperature sensor system "1" 701B" "Compressor 2" ■ "Enable compressor 5100" "1"...
Installation sequence Siting the heat pump Levelling the heat pump Position and level the heat pump hori- zontally as described on page 7.
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Installation sequence Siting the heat pump (cont.) Removing the transport brackets Please note Remove transport brackets and If transport brackets are not secure with lower screws onto removed, they cause vibrations the base carrier (see step 4). and excessive noise.
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Installation sequence Siting the heat pump (cont.) Removing the top panel...
Installation sequence Hydraulic connections Overview of connections < 4 Connecting the primary circuit Please note 1. Equip the primary circuit with an The components used must be expansion vessel and safety valve (in resistant to the heat transfer accordance with DIN 4757). medium.
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5. Fill the primary circuit with the heat transfer medium. Viessmann heat transfer medium ■ Discharge and drain pipes must and vent. terminate in a container that can hold the maximum possible expan- sion volume of the heat transfer medium.
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Installation sequence Hydraulic connections (cont.) Connecting the secondary circuit 1. Equip the secondary circuit on site 3. Fill and vent secondary circuit. with an expansion vessel and safety assembly (in accordance with 4. Thermally insulate pipes inside the DIN 4757). building.
Installation sequence Electrical connections in the heat pump control unit Installing the programming unit [XÖ...
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Installation sequence Electrical connections in the heat pump control… (cont.) Routing cables to the wiring chamber Danger When routing the on-site power cables, Damaged cable insulation can observe the location of the cable entries cause injury and damage to the into the appliance through its back panel appliance.
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Installation sequence Electrical connections in the heat pump control… (cont.) <42 V 230 V 400 V 1. Route LV leads through "< 42 V" 3. Route power cable for compressor opening to heat pump control unit ter- through "400 V" opening to terminal minal area.
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Installation sequence Electrical connections in the heat pump control… (cont.) Carry out electrical connection of heat pump stage 1 (type BW/WW 351.A18) and stage 2 (type BWS 351.A18) aJ B < 42 V 230 V~ < 42 V 230 V~ [C-Ö...
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Installation sequence Electrical connections in the heat pump control… (cont.) A Wiring chamber, heat pump stage 2 ■ With plugs aJB and aVG for the (type BWS 351.A18) wiring chamber, heat pump stage B < 42 V LV connecting cables: 2 (type BWS 351.A18).
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Installation sequence Electrical connections in the heat pump control… (cont.) Terminal area, heat pump control unit fÖ sYD sYS F3/F4 F8/F9 F13/F14 F0/F2 F18/F20 F6/F7 F21/F23 F11/F12 F16/F17 sXD sXS sXA sYÖ sXÖ A Cross connect PCB E Controller and sensor PCB B F1 Fuse 6.3 A (slow) C Expansion PCB on the main PCB D Main PCB...
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Installation sequence Electrical connections in the heat pump control… (cont.) Main PCB Information regarding the connection Set the required parameters during com- values missioning; see from page 106. ■ The output given is the recommended connected load. ■ The total output of all components con- nected directly to the heat pump con- trol unit (e.g.
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Installation sequence Electrical connections in the heat pump control… (cont.) 230 V~ components Plug sYA Terminals Function Explanation 211.1 Primary pump (heat pump Connection values stage 1 or common primary ■ Output: 200 W pump), well pump switching ■ Voltage: 230 V~ ■...
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Installation sequence Electrical connections in the heat pump control… (cont.) Plug sYA Terminals Function Explanation 211.5 Cooling switching Circuit on site NC function (natural cool- Connection values ing) ■ Output: 10 W NC/AC ■ Voltage: 230 V~ ■ Max. switching current: 4(2) A Plug sYS Terminals Function...
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Installation sequence Electrical connections in the heat pump control… (cont.) Connecting a temperature limiter as a maximum temperature limiter for under- floor heating Connecting a general temperature Connecting the temperature limiter, limiter B part no. 7151 728, 7151 729 B X2.N X2.N sÖ...
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Installation sequence Electrical connections in the heat pump control… (cont.) Connecting the temperature limiter, part no. 7151 728, 7151 729 B to the mixer extension kit sÖ sÖ A Connect plug sÖ to the extension kit. B Temperature limiter C Heating circuit pump M3/HC3...
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Installation sequence Electrical connections in the heat pump control… (cont.) Expansion PCB on main PCB Information regarding the connection Set the required parameters during com- values missioning; see from page 106. ■ The output given is the recommended connected load. ■...
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Installation sequence Electrical connections in the heat pump control… (cont.) Plug sXS Terminals Function Explanation 222.3 Switching external heat Zero volt contact 222.4 source with two high limit safety cut-outs (max. 70 °C) Note to protect the heat pump and ■...
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Installation sequence Electrical connections in the heat pump control… (cont.) C Connection on the external heat High limit safety cut-out for heat pump in conjunction with an external source at terminals for external heat source demand D High limit safety cut-out (max. 70 °C) as heat pump protection X3.1 K1 Relay;...
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Installation sequence Electrical connections in the heat pump control… (cont.) Central fault message 223.1 230 V~, 0.5 A 223.2 A Terminals on extension PCB Plug sXF Terminals Function Explanation 224.2 Primary pump for heat pump Connection values stage 2 (if installed) ■...
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Installation sequence Electrical connections in the heat pump control… (cont.) Plug sXF Terminals Function Explanation 224.6 ■ Cylinder primary pump Switch cylinder primary pump and two- (DHW side) way shut-off valve in parallel ■ 2-way shut-off valve Connection values ■ Output: 130 W ■...
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Installation sequence Electrical connections in the heat pump control… (cont.) Plug sXG Terminals Function Explanation 225.1 Heating circuit pump of the Connect the temperature limiter in series heating circuit with mixer as a maximum temperature limiter for M2/HC2 underfloor heating circuit (if installed). Connection values: ■...
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Installation sequence Electrical connections in the heat pump control… (cont.) Terminals Function Explanation ■ Power supply terminals Terminals for message and safety connec- of the control unit "L1" tions and auxiliary compo- nents Note ■ Switched phase L1: Switched phase can be used for on-site X3.1, X3.2, X3.3, X3.7, system components.
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Installation sequence Electrical connections in the heat pump control… (cont.) Terminals Function Explanation X3.6 Power-OFF Requires floating N/C contact: X3.7 ■ Closed: No blocking (safety chain has continuity) ■ Open: Blocking enabled ■ Breaking capacity 230 V~, 0.15 A With a connected power-OFF contact, no jumpers should be installed.
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Installation sequence Electrical connections in the heat pump control… (cont.) Terminals Function Explanation X3.10 Fault message, lag heat Floating contact required: X3.11 pump in a cascade ■ Closed: No faults ■ Open: Fault Jumper ■ Breaking capacity 230 V~, 0.15 A With a connected message contact, no jumpers should be installed.
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Installation sequence Electrical connections in the heat pump control… (cont.) Note ■ Plug F11: Nothing should be connec- ted to plug F11 on site. ■ Flow temperature sensor for heat- ing circuit with mixer (M3): The flow temperature sensor for one heating circuit with mixer (M3/HC3) is connec- ted to the mixer extension kit (acces- sory).
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Installation sequence Electrical connections in the heat pump control… (cont.) Plug Sensor Type KM BUS Connection of components on site (cores interchangea- ble). If more than one of the following devices are to be connected, use a KM BUS distributor (accessory). ■...
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Installation sequence Electrical connections in the heat pump control… (cont.) Connection of primary circuit flow/return temperature sensor, two-stage heat pump < 42 V aS Flow temperature sensor, primary aD Return temperature sensor, primary circuit circuit Please note Identify sensor leads. Fasten sensor leads and disman- tled leads (with plug aS/aD) together with the other LV leads...
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Installation sequence Electrical connections in the heat pump control… (cont.) Swimming pool water heating Note ■ At plug gÖ connect only the circulation ■ Swimming pool water heating is pump for swimming pool water heating switched via external extension H1 F in accordance with the following with KM BUS.
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Installation sequence Electrical connections in the heat pump control… (cont.) Cascade control via KM BUS Make connections at external extension H1 only in accordance with the following diagram. X3.10 X3.11 230V 223.1 fÖ 223.2 230V 223.1 223.2 230V sÖ 223.1 223.2 A Heat pump 1 (lead appliance) B KM BUS...
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Installation sequence Electrical connections in the heat pump control… (cont.) C External extension H1 H Zero volt contact "External demand " D Zero volt contact "External demand " K Lag heat pump 3 E Lag heat pump 1 L Central fault message input, lag Connection at contact for "External heat pump demand "...
Installation sequence Power supply Isolators for non-earthed conductors Danger ■ The main isolator (if installed) must The absence of component simultaneously isolate all non-earthed earthing in the system can lead to conductors from the mains with a min- serious injury from electrical cur- imum contact separation of 3 mm.
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Installation sequence Power supply (cont.) ■ The heat pump control unit/PCB Information regarding the compres- must be supplied without blocking by sor power supply the power supply utility; tariffs that are ■ subject to possible shutdown must not Please note be used here.
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Installation sequence Power supply (cont.) Compressor power supply (400 V~) ■ No parameters need to be set when applying economy tariffs with power- OFF facility. The compressor is shut down during the power-OFF period. ■ Recommended power cable: 5 x 4.0 mm ■...
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Installation sequence Power supply (cont.) Single stage X3.7 X3.6 ≈ Diagram excluding fuses and RCD A Heat pump control unit (connection E Ripple control receiver (contact on cross connect PCB) open: power-OFF enabled) B Instantaneous heating water heater F Backup fuse ripple control receiver (if installed) G Feed: TNC system C Compressor...
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Installation sequence Power supply (cont.) Two-stage (type BW/WW + BWS) X3.7 X3.6 ≈ Shown excluding fuses and RCD. A Heat pump control unit (connection E Ripple control receiver (contact on cross connect PCB) open: power-OFF enabled) B Instantaneous heating water heater F Backup fuse ripple control receiver (if installed) G Feed: TNC system...
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Installation sequence Power supply (cont.) Power-OFF with on-site load disconnection The power-OFF signal is connected to Note the on-site contactor of the economy tar- Observe the technical connection condi- iff power supply and to the heat pump tions of the relevant power supply util- control unit.
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Installation sequence Power supply (cont.) A Heat pump control unit (connection F Standard tariff meter on cross connect PCB) G Ripple control receiver (contact B Instantaneous heating water heater open: power-OFF enabled) with (if installed) backup fuse C Compressor H Economy tariff meter D Control unit power supply K Feed: TNC system E Mains isolator...
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Installation sequence Power supply (cont.) H Economy tariff meter L Heat pump compressor stage 2 (type BWS) K Feed: TNC system Phase monitor (if installed) The phase monitor is used to monitor the Remove the cause if the relay has mains power supply to the compressor.
Installation sequence Power supply (cont.) Version 2 N 11 21 LEDs explained A Voltage "U": Illuminates green if voltage is L1 L2 L3 applied. B Relay "R": Illuminates yellow if the phase sequence is correct. Does not illuminate if the phase sequence is incorrect.
Installation sequence Closing the heat pump Please note Danger Seal the appliance so it is sound- An absence of component earth- proof and diffusion-proof. ing in the system can lead to seri- Check tightness of internal ous injury from electrical current hydraulic connections.
Installation sequence Closing the heat pump (cont.) 4. 10x Checking diaphragm grommets Please note Seal the appliance so it is sound- proof and diffusion-proof. With the hose outlets, ensure dia- phragm grommets A are seated correctly. Seal diaphragm grommets A with adhesive tape if necessary.
Commissioning, inspection, maintenance Further details regarding the individual steps Opening the heat pump Danger 1. Remove front panel in reverse order; Contact with 'live' components see page 100. can lead to serious injury from electric current. 2. When the work is complete, close the Never touch terminal areas heat pump;...
1. Check the pre-charge pressure of the expansion vessel (see page 106). 2. Fill the primary circuit with Viessmann heat transfer medium and vent. Note The system must be protected against frost down to –15 °C.
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Please note 5. Check the system pressure and top To prevent equipment dam- up with water if required. age, check the flow and return Minimum system pressure: 0.8 bar connections of the heat pump Permiss.
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Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Switch on the ON/OFF switch on the heat pump control unit. ■ The enquiry "Commissioning Start?" appears automatically on first commissioning. Note The commissioning assistant can also be started manually: For this, hold down the when switching on the heat pump control...
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Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Language Date Date / time Time Start commissioning? Programming Parameter group Parameter level 1 select Sensor values Temperature sensors display Signal inputs Signal inputs display Actuator test Actuator test carry out Subscriber check Subscriber check LON carry out...
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Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Commissioning without the commissioning assistant Enabling the service menu 3. Select parameter group: "System definition" The service menu can be enabled from 4. Select parameter: "System scheme any menu. 7000" Press OK + å...
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Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Pumps and other components Pump/component Parameters Setting Secondary pump (for "System definition" Ó "1" to "11" heating circuit A1/HC1 "System scheme 7000" without heating water buffer cylinder; no addi- tional heating circuit pump required) Heating circuit pump A1/ "System definition"...
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Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Pump/component Parameters Setting Circulation pump for "External heat source" Ó "1" DHW reheating "Enable external heat source 7B00" "External heat source" Ó "1" "Enable external heat source for DHW heating 7B0D"...
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Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Two-stage heat pump Parameter Setting Compressor 2: ■ "Enable compressor 5100" "1" ■ "Output compressor stage 2 5130" Value corresponding to the rated heating output of heat pump stage 2, see type plate External functions External functions...
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Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) External functions Parameter Setting External blocking of the com- "System definition" Ó "0" to "8" pressor; mixer in control "Effect of ext. blocking on mode or CLOSED heat pump/heating circuits 7015"...
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Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Instantaneous heating water heater Parameters for Setting instantaneous heating water heater "Electr booster heater" Ó "1" "Enable instantaneous heating water heater 7900" "Electr booster heater", if applicable Ó "1" "Enable instant. heating water heater for cen- tral heating 7902"...
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Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Heat pump cascade Cascade via external extension H1 Parameter Setting Lead appliance Lag heat pump "System definition" Ó "0" to "10" "11" "System scheme 7000" "System definition" Ó "1" "0" "External extension 7010"...
Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Parameter Setting Lead appliance Lag heat pump "System definition" Ó – "0" to "700" (≙ 0 to "Flow temperature for external 70 °C) demand 730C" "Communication" Ó – "1" to "4" (unique) "Heat pump number in cas- cade (LON) 5707"...
Troubleshooting Repairs Overview of electrical components Type BW 351.A18...
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Troubleshooting Repairs (cont.) Type BWS 351.A18 A Transformer, EEV PCB G Main PCB B EEV PCB (electronic expansion H Expansion PCB on the main PCB valve) K Controller and sensor PCB C Compressor contactors, starter con- L Programming unit trol, three-phase monitor M Plug for connecting cable stage 1/2 D Cable channel 230 V~...
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Troubleshooting Repairs (cont.) Overview of internal components A BC D A Primary circuit flow temperature L Electronic expansion valve EEV sensor (heat pump brine inlet) M Drain valve, primary side B Suction gas temperature sensor N High pressure sensor EEV C Condenser O Filter dryer D Secondary circuit flow temperature...
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Troubleshooting Repairs (cont.) Draining the heat pump on the primary/secondary side 1. Close the on-site BDF valve. 2. Drain heat pump at drain valve on pri- mary/secondary side (see page 119). Checking sensors Sensor Captur- Installed Connection to ing ele- location ment ■...
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Troubleshooting Repairs (cont.) Temperature sensors type Ni 500 Temperature sensors, type Pt 500 140 180 Temperature in °C -40 -20 Temperature in °C Checking fuses Position of the fuses: Danger ■ Fuse F1 is located on the cross con- Contact with 'live' components nect PCB.
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Troubleshooting Repairs (cont.) Removing the heat pump module Please note Never put weight on the top, front Avoid device damage. or side panels of the appliance. [{{] U/V/W 5. Drain the primary and secondary sides (for drain valves, see page 119).
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Troubleshooting Repairs (cont.) Note on step 7 Note on step 9 Identify the plug-in and threaded con- To stabilise the heat pump module on its nections that belong together. support, the transport bracket can be Disconnect all electrical connections. secured with screws (see page 60). Please note Tilting the compressor at a steep angle inside the heat pump can...
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Troubleshooting Repairs (cont.) Installing the heat pump module Install in reverse order to removal. Please note To prevent the formation of con- densate and the excessive devel- opment of noise, tightly seal the casing door. Please note Seal the appliance so it is sound- proof and diffusion-proof.
Parts lists Parts lists, type BW/WW 351.A18 Ordering individual parts The following information is required: Standard parts are available from your ■ Serial no. (see type plate A) local dealer. ■ Assembly (from this parts list) ■ Position number of the individual part within the assembly (from this parts list)
Parts lists Overview of assemblies, type BW/WW 351.A18 A Type plate D Assembly, heat pump module B Assembly, casing E Assembly, base frame C Assembly, electrical equipment...
Parts lists Assembly, electrical equipment, type BW/WW 351.A18 0001 Programming unit, heat pump 0031 Mains terminals control unit Vitotronic 200 0033 Relay, start delay 0002 Controller and sensor PCB with 0034 Body-bound rivet cover (CU401) 0035 Cable trunking 0003 Main PCB with cover (MB761) 0004 Expansion PCB with cover Parts not shown (SA135)
Parts lists Assembly, base frame, type BW/WW 351.A18 0001 Cover strip, front/back 0009 Upper hinge section for casing 0002 Cover strip, left/right door 0003 Bottom panel 0010 Lower hinge section for casing 0004 Casing bracket, vertical (set) door 0005 Casing bracket, horizontal front/ 0011 Casing door back 0012 Cover panel for heat pump control...
Parts lists Parts lists, type BWS 351.A18 Ordering individual parts The following information is required: Standard parts are available from your ■ Serial no. (see type plate A) local dealer. ■ Assembly (from this parts list) ■ Position number of the individual part within the assembly (from this parts list)
Parts lists Overview of assemblies, type BWS 351.A18 A Type plate D Assembly, heat pump module B Assembly, casing E Assembly, base frame C Assembly, electrical equipment...
Parts lists Parts not shown, type BWS 351.A18 0005 Touch-up spray paint, Vitosilver 0008 Service instructions 0006 Touch-up paint stick, Vitosilver Vitotronic 200 0007 Heat pump installation and serv- 0009 Operating instructions ice instructions Vitotronic 200, type WO1B Assembly, casing, type BWS 351.A18 0001 Front panel 0005 Top panel, back 0002 Side panel, left...
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Parts lists Assembly, casing, type BWS 351.A18 (cont.) 0002 0005 0007 0004 0006 0003 0001...
Commissioning/service reports Commissioning/service reports Hydraulic parameters report Setting and test values Set value Commission- Frost protection (brine medium) °C – 15 Testing the external heating circuit pumps Circulation pump type Circulation pump stage Overflow valve setting Primary circuit commissioning Primary circuit flow temperature °C Primary circuit return temperature °C...
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Commissioning/service reports Commissioning/service reports (cont.) Parameters Code Delivered condi- Initial tion commis- sioning System definition System scheme (see chapter "Overview 7000 of possible system schemes") Temperature differential for calculating 7003 40 (≙ 4 K) the heating limit Temperature differential for calculating 7004 40 (≙...
Specification Specification Type BW/BWS 351.A18 Output data to DIN EN 14511 (B0/W35 °C, 5 K spread) Rated heating output 18.65 Cooling capacity 14.80 Power consumption 4.14 Coefficient of performance ε (COP) 4.51 Output data to DIN EN 14511 (B0/W35 °C, 10 K spread) Rated heating output 18.97 Cooling capacity...
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Specification Specification (cont.) Type BW/BWS 351.A18 Refrigerant circuit Refrigerant R134a Refrigerant charge 5.95 Permiss. operating pressure, low pressure side Permiss. operating pressure, high pressure side Compressor Type Hermetic scroll Permiss. operating pressure Primary circuit Secondary circuit Dimensions Total length 1085 Total width Total height without programming unit 1074...
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Specification Specification (cont.) Type WW/BWS in conjunction with "conversion kit for 351.A18 water/water heat pump" Electrical values, heat pump Rated voltage, compressor 3/N/PE 400 V/50 Hz Rated current, compressor 21.0 Compressor starting current (with starting current lim- 28.0 iter) Starting current, compressor with stalled armature 127.0 Compressor fuse 1 x B25A 3-pole...
All windows and external doors sealed Geothermal probes/well and connection lines fully installed Components for cooling mode fully installed (option) Preferred appointment: Date Time Date Time All work ordered from Viessmann will be charged to me/us in accordance with the current Viessmann pricelist. Place/date Signature...
We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, confirm as sole respon- sible body that the product Vitocal 350-G, type BW 351.A18, type WW 351.A18 and type BWS 351.A18, incl. the heat pump control unit Vitotronic 200, type WO1B...
Keyword index Keyword index Checking sensors......120 Appliance fuses........121 Checking the refrigerant circuit for Appliance too noisy......121 leaks..........105 Appropriate use........6 Checking the system pressure..106 Assembly.........125, 135 Circulation pump for cylinder heat- Assembly, base frame ing........44, 51, 110 ■ Type BW/WW 351.A18..126, 133 Circulation pump for cylinder reheat- ■...
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Keyword index Keyword index (cont.) Minimum clearances......8 Minimum flow rate......64 Parameters Minimum room volume......8 ■ Cascade via H1......115 Minimum system pressure....106 ■ Cascade via LON......115 Mixer extension kit...45, 52, 53, 75 ■ Cooling function......113 ■ External heat source.....114 ■ On-site components.....109 Natural cooling......49, 52 ■...
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Keyword index Keyword index (cont.) Primary store system......34 Programming unit......118 Safety equipment block with safety Pt 500..........120 assembly........44, 51 Pumps..........119 Safety high pressure switch.....119 Secondary pump......51, 110 Selecting the parameter group..109 Radiator circuit Sensor resistance curves....120 ■ With mixer.........42, 49 Sensors..........119 ■...
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Keyword index Keyword index (cont.) Temperature sensors ■ Connection.......29, 33 Venting Temperature sensor type Ni 500 ■ Primary side........105 ■ Curve..........121 ■ Secondary side......105 Terminating service......109 Vitocom 100........111 Thermostat ■ For swimming pool temperature con- trol...........53 Wall clearances........8 Three phase monitor......98 Warranty..........106 Three-phase monitor......118 Water/water heat pump......6...
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