Viessmann Vitocal 350-G Installation And Service Instructions Manual
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Viessmann Vitocal 350-G Installation And Service Instructions Manual

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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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Summary of Contents for Viessmann Vitocal 350-G

  • Page 1 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...
  • Page 2 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.
  • Page 3 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...

  • Page 4: Table Of Contents

    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)......
  • Page 5 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..........

  • Page 6: Preparing For Installation

    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 ■...

  • Page 7: General Information On The Electrical Connection

    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.
  • Page 8 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 ■...
  • Page 9 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...
  • Page 10 Preparing for installation Installation (cont.) Requirements for on-site connections Single stage (type BW 351.A18) 230 V < 42 V 400 V...
  • Page 11 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.

  • Page 12: Overview Of Possible System Schemes

    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~)
  • Page 13 Preparing for installation Overview of possible system schemes (cont.) Component "System scheme 7000" Heating circuit A1/HC1 – – – – – – M2/HC2 – – – – M3/HC3 – – – – – – – – DHW cylinder – – –...

  • Page 14: Designations In The System Examples

    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--...

  • Page 15: Primary Circuit, Type Bw 351.A18 (Brine/Water)

    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...
  • Page 16 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...

  • Page 17: Primary Circuit, Type Ww 351.A18 (Water/Water)

    Preparing for installation Primary circuit, type WW 351.A18 (water/water) Hydraulic installation scheme --2/X3.8;3.9-- ----- --2/X3.8;3.9-- ---------...
  • Page 18 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;...
  • Page 19 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...

  • Page 20: Primary Circuit Type Bw 351.A18 + Type Bws 351.A18 (2-Stage)

    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--...
  • Page 21 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...
  • Page 22 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...
  • Page 23 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--...
  • Page 24 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...
  • Page 25 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...

  • Page 26: Primary Circuit Type Ww 351.A18 + Type Bws 351.A18 (2-Stage)

    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-- ---------...
  • Page 27 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...
  • Page 28 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...
  • Page 29 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;...
  • Page 30 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).
  • Page 31 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-- ---------...
  • Page 32 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...
  • Page 33 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;...

  • Page 34: Dhw Heating

    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...
  • Page 35 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...

  • Page 36: Integrating The 2-Stage Version In The System Examples

    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"...
  • Page 37 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--...

  • Page 38: Integrating A Heat Pump Cascade Into The System Examples

    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.
  • Page 39 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 ■...
  • Page 40 Preparing for installation Integrating a heat pump cascade into the system… (cont.) Hydraulic installation scheme example: Heat pump cascade with 2-stage heat pumps...
  • Page 41 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...

  • Page 42: System Example 1, Id: 4605307_1006_01

    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 ■...
  • Page 43 Preparing for installation System example 1, ID: 4605307_1006_01 (cont.) Hydraulic installation scheme --8/145-- --8/145-- --2/F12-- --2/225.1-- --105/2-- --74/20-- --105/20-- --2/225.2;3-- --105/52-- --2/F13-- ---47/R1--41- --2/211.2-- --2/212.3-- -47/R4--66- -2/F4- --47/S4-- --2/224.6--...
  • Page 44 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...
  • Page 45 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...
  • Page 46 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;...
  • Page 47 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...
  • Page 48 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...

  • Page 49: System Example 2, Id: 4605308_1006_01

    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"...
  • Page 50 Preparing for installation System example 2, ID: 4605308_1006_01 (cont.) Hydraulic installation scheme --8/145-- --8/145-- -8/145- --2/F14-- --105/2-- -2/225.1--76- --87/X4.1;2-- --105/20-- -87/52- --105/52-- --74-- --2/225.2;3-- --2/F13-- ----114/50-- -2/224.3--14- -2/211.2--14- --2/224.5-- --2/211.4-- -2/212.3- -2/224.7- --6;10-- -2/222.4--51- 33 --2/224.6--...
  • Page 51 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...
  • Page 52 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...
  • Page 53 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...
  • Page 54 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...
  • Page 55 Preparing for installation System example 2, ID: 4605308_1006_01 (cont.) X2.4 211.5 X2.N X2.3 X2.2 230 V/50 Hz X2.1 52 1. 52 2. 20 1. 20 2. X3.1 230V / 1A X3.2 X3.3 230V / 1A X3.4 X4.1 24V / 10mA X4.2 X4.3 24V / 10mA...
  • Page 56 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...
  • Page 57 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-...
  • Page 58 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"...

  • Page 59: Installation Sequence

    Installation sequence Siting the heat pump Levelling the heat pump Position and level the heat pump hori- zontally as described on page 7.
  • Page 60 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.
  • Page 61 Installation sequence Siting the heat pump (cont.) Removing the top panel...

  • Page 62: Hydraulic Connections

    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.
  • Page 63 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.
  • Page 64 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.

  • Page 65: Electrical Connections In The Heat Pump Control Unit

    Installation sequence Electrical connections in the heat pump control unit Installing the programming unit [XÖ...
  • Page 66 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.
  • Page 67 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.
  • Page 68 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...
  • Page 69 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).
  • Page 70 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...
  • Page 71 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.
  • Page 72 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~ ■...
  • Page 73 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...
  • Page 74 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...
  • Page 75 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...
  • Page 76 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. ■...
  • Page 77 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 ■...
  • Page 78 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;...
  • Page 79 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) ■...
  • Page 80 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 ■...
  • Page 81 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: ■...
  • Page 82 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.
  • Page 83 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.
  • Page 84 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.
  • Page 85 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).
  • Page 86 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). ■...
  • Page 87 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...
  • Page 88 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.
  • Page 89 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...
  • Page 90 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 "...

  • Page 91: Power Supply

    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.
  • Page 92 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.
  • Page 93 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 ■...
  • Page 94 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...
  • Page 95 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...
  • Page 96 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.
  • Page 97 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...
  • Page 98 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.

  • Page 99: Connecting To Terminals X3.8/X3.9

    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.

  • Page 100: Closing The Heat Pump

    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.

  • Page 101: Checking Diaphragm Grommets

    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.
  • Page 102 Installation sequence Checking diaphragm grommets (cont.)

  • Page 103: Commissioning, Inspection, Maintenance

    Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance For further information regarding the individual steps, see the page indicated Commissioning steps Inspection steps Maintenance steps Page • • • 1. Opening the heat pump............ 104 • 2. Writing reports..............104 •...

  • Page 104: Further Details Regarding The Individual Steps

    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;...

  • Page 105: Checking The Refrigerant Circuit For Leaks

    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.

  • Page 106: Checking Expansion Vessels And The Primary Circuit/ Heating Circuit Pressure

    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.
  • Page 107 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...
  • Page 108 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...
  • Page 109 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...
  • Page 110 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"...
  • Page 111 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"...
  • Page 112 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...
  • Page 113 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"...
  • Page 114 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"...
  • Page 115 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"...

  • Page 116: Instructing The System User

    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"...

  • Page 117: Troubleshooting

    Troubleshooting Repairs Overview of electrical components Type BW 351.A18...
  • Page 118 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~...
  • Page 119 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...
  • Page 120 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 ■...
  • Page 121 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.
  • Page 122 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).
  • Page 123 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...
  • Page 124 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.

  • Page 125: Parts Lists

    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)

  • Page 126: Overview Of Assemblies, Type Bw/Ww 351.A18

    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...

  • Page 127: Parts Not Shown, Type Bw/Ww 351.A18

    Parts lists Parts not shown, type BW/WW 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 BW/WW 351.A18 0001 Front panel 0006 Lower panel 0002 Side panel, left...
  • Page 128 Parts lists Assembly, casing, type BW/WW 351.A18 (cont.) 0005 0007 0002 0004 0008 0009 0001 0006 0003...

  • Page 129: Assembly, Electrical Equipment, Type Bw/Ww 351.A18

    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)
  • Page 130 Parts lists Assembly, electrical equipment, type BW/WW… (cont.) 0004 0002 0031 0003 0006 0016 0001 0007 0010 0011 0035 0034 0017 0013 0015 0014 0012 0008 0033 0009...

  • Page 131: Assembly, Heat Pump Module, Type Bw/Ww 351.A18

    Parts lists Assembly, heat pump module, type BW/WW 351.A18 0001 Compressor 0022 Connection line, filter dryer - sight 0002 Heat exchanger (evaporator) glass 0003 Heat exchanger (condenser) 0023 Connection line, evaporator - 0004 Pressure sensor (PT5-30T) compressor 0005 Pressure sensor (PT5-7T) 0024 Connection line, compressor - 0006 Spacers (set) condenser...
  • Page 132 Parts lists Assembly, heat pump module, type BW/WW 351.A18 (cont.) 0025 0034 0026 0012 0033 0014 0034 0013 0033 0005 0017 0036 0032 0023 0024 0012 0002 0014 0015 0013 0009 0020 0004 0008 0029 0039 0022 0021 0001 0006 0010 0027 0019...

  • Page 133: Assembly, Base Frame, Type Bw/Ww 351.A18

    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...
  • Page 134 Parts lists Assembly, base frame, type BW/WW 351.A18 (cont.) 0005 0006 0007 0006 0005 0012 0004 0014 0013 0011 0004 0013 0004 0004 0009 0003 0010 0002 0009 0008 0001 0010 0001 0002...

  • Page 135: Parts Lists, Type Bws 351.A18

    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)

  • Page 136: Overview Of Assemblies, Type Bws 351.A18

    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...

  • Page 137: Parts Not Shown, Type Bws 351.A18

    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...
  • Page 138 Parts lists Assembly, casing, type BWS 351.A18 (cont.) 0002 0005 0007 0004 0006 0003 0001...

  • Page 139: Assembly, Electrical Equipment, Type Bws 351.A18

    Parts lists Assembly, electrical equipment, type BWS 351.A18 0008 PCB (IU210-A10 H_1 S_14) 0034 Body-bound rivet 0009 Transformer 0035 Cable trunking 0011 Full wave soft starter 0013 Contactor, 3-pole (K3-40A00 Parts not shown 230 V~) 0025 Connecting cable, compressor 0014 Contactor, 3-pole (K2-30A10 (MVS) 230 V~) 0026 Cable kit, EEV...
  • Page 140 Parts lists Assembly, electrical equipment, type BWS 351.A18 (cont.) 0031 0011 0035 0034 0017 0013 0015 0014 0033 0008 0009...

  • Page 141: Assembly, Heat Pump Module, Type Bws 351.A18

    Parts lists Assembly, heat pump module, type BWS 351.A18 0001 Compressor 0022 Connection line, filter dryer - sight 0002 Heat exchanger (evaporator) glass 0003 Heat exchanger (condenser) 0023 Connection line, evaporator - 0004 Pressure sensor (PT5-30T) compressor 0005 Pressure sensor (PT5-7T) 0024 Connection line, compressor - 0006 Spacers (set) condenser...
  • Page 142 Parts lists Assembly, heat pump module, type BWS 351.A18 (cont.) 0025 0034 0026 0012 0033 0014 0034 0013 0033 0005 0017 0036 0032 0023 0024 0012 0002 0014 0015 0013 0009 0020 0004 0008 0029 0039 0022 0021 0001 0006 0010 0027 0019...

  • Page 143: Assembly, Base Frame, Type Bws 351.A18

    Parts lists Assembly, base frame, type BWS 351.A18 0001 Cover strip, front/back 0008 Adjustable feet (4 pce) 0002 Cover strip, left/right 0009 Upper hinge section for casing 0003 Bottom panel door 0004 Casing bracket, vertical (set) 0010 Lower hinge section for casing 0005 Casing bracket, horizontal front/ door back...
  • Page 144 Parts lists Assembly, base frame, type BWS 351.A18 (cont.) 0006 0005 0005 0007 0006 0004 0004 0013 0012 0011 0004 0012 0009 0010 0003 0004 0002 0001 0009 0010 0008 0001 0002...

  • Page 145: Commissioning/Service Reports

    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...
  • Page 146 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 (≙...
  • Page 147 Commissioning/service reports Commissioning/service reports (cont.) Parameters Code Delivered condi- Initial tion commis- sioning External heat source Enable external heat source 7B00 Priority ext. heat source/instant. heating 7B01 water heater Dual mode temperature external heat 7B02 100 (≙ 10 °C) source Enable external heat source for DHW 7B0D heating...
  • Page 148 Commissioning/service reports Commissioning/service reports (cont.) Parameters Code Delivered condi- Initial tion commis- sioning Electric booster heater Enable instantaneous heating water 7900 heater Enable instant. heating water heater for 7902 central heating Max. output instantaneous heating water 7907 heater Output for instant. heating water heater at 790A power-OFF Dual mode temp.
  • Page 149 Commissioning/service reports Commissioning/service reports (cont.) Parameters Code Delivered condi- Initial tion commis- sioning Heating circuit 2 Standard room temperature 3000 200 (≙ 20 °C) Reduced room temperature 3001 200 (≙ 20 °C) Remote control 3003 Heating curve level 3006 0 (≙ 0 K) Heating curve slope 3007 6 (≙...
  • Page 150 Commissioning/service reports Commissioning/service reports (cont.) Parameters Code Delivered condi- Initial tion commis- sioning Time Automatic changeover summertime - 7C00 wintertime Start summertime - month 7C01 Start summertime - week 7C02 Start summertime - day 7C03 Start wintertime - month 7C04 Start wintertime - week 7C05 Start wintertime - day...

  • Page 151: Specification

    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...
  • Page 152 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...
  • Page 153 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...

  • Page 154: Appendix

    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...

  • Page 155: Certificates

    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...

  • Page 156: Keyword Index

    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- ■...
  • Page 157 Keyword index Keyword index (cont.) Cooling circuit flow temperature sensor Electrical installation scheme ■ Curve..........120 ■ DHW heating........35 Cooling circuit pump......52 ■ Heat pump cascade......41 Cooling function......49, 52 ■ Primary circuit, brine/water. 16, 21, 24 Cross connect PCB....70, 81, 118 ■...
  • Page 158 Keyword index Keyword index (cont.) Floor load..........8 Hydraulic installation scheme Flow limiter 44, 51 ■ 2-stage heat pump....37, 40 ■ Connection.......29, 33 ■ DHW heating........34 Flow temperature ■ Primary circuit, brine/water. 15, 20, 23 ■ With external demand...115, 116 ■ Primary circuit, water/water 17, 26, 31 Flow temperature sensor ■...
  • Page 159 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 ■...
  • Page 160 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 ■...
  • Page 161 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...
  • Page 164 Applicability Serial No.: 7452607 7452608 Viessmann Werke GmbH&Co KG Viessmann Limited D-35107 Allendorf Hortonwood 30, Telford Telephone: +49 6452 70-0 Shropshire, TF1 7YP, GB Fax: +49 6452 70-2780 Telephone: +44 1952 675000 www.viessmann.com Fax: +44 1952 675040 E-mail: info-uk@viessmann.com...

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