Viessmann Vitocal 350-G Installation And Service Instructions For Contractors
  1. Manuals
  2. Brands
  3. Viessmann Manuals
  4. Heat Pump
  5. Vitocal 350-G
  6. Installation and service instructions for contractors

Viessmann Vitocal 350-G Installation And Service Instructions For Contractors

Heat pumps with electric drive, 1 and 2-stage
Hide thumbs Also See for Vitocal 350-G:
Table of Contents

Advertisement

Quick Links

Download this manual
VIESMANN
Installation and service
instructions
for contractors
Vitocal 350-G
Type BW/BWS 351.A07
Heat pumps with electric drive, 1 and 2-stage
Type BWC 351.A07
Heat pumps with electric drive, 1-stage
For applicability, see the last page
VITOCAL 350-G
Please keep safe.
5546 273 GB
6/2014

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Vitocal 350-G and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Viessmann Vitocal 350-G

Summary of Contents for Viessmann Vitocal 350-G

  • Page 1 VIESMANN Installation and service instructions for contractors Vitocal 350-G Type BW/BWS 351.A07 Heat pumps with electric drive, 1 and 2-stage Type BWC 351.A07 Heat pumps with electric drive, 1-stage For applicability, see the last page VITOCAL 350-G Please keep safe.
  • Page 2 Safety instructions Safety instructions Please follow these safety instructions closely to prevent accidents and mate- rial losses. Safety instructions explained ■ Codes of practice of the 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 Repairing components that fulfil a safety function can compromise the safe operation of your sys- tem. Defective components must be replaced with genuine Viessmann spare parts. Auxiliary components, spare and wearing parts Please note Spare and wearing parts that have not been tested together with the system can compromise its function.

  • Page 4: Table Of Contents

    Steps - commissioning, inspection and maintenance.......... 70 Further details regarding the individual steps............71 Troubleshooting Repairs......................... 86 Parts lists, Vitocal 350-G, type BW 351.A07 Overview of assemblies, type BW................ 95 Parts not shown, type BW ................... 96 Casing, type BW ....................96 Electrical equipment, type BW................
  • Page 5 Index Index (cont.) Parts lists, Vitocal 350-G, type BWC 351.A07 Overview of assemblies, type BWC..............113 Parts not shown, type BWC................. 114 Casing, type BWC....................114 Electrical equipment, type BWC................116 Heat pump module, type BWC................118 Hydraulics, type BWC..................120 Commissioning/service reports Hydraulic parameters report.................

  • Page 6: Preparing For Installation

    Preparing for installation Intended use The appliance is only intended to be Commercial or industrial usage for a pur- installed and operated in sealed unven- pose other than central heating/cooling ted heating systems that comply with or DHW heating shall be deemed inap- EN 12828, with due attention paid to the propriate.
  • Page 7 Preparing for installation Product information (cont.) ■ The output of type BW can be supple- mented with a stage 2 heat pump (type BWS). ■ Using the conversion kit (accessory), the brine/water heat pump type BW/ BWC can be converted into a water/ water heat pump.

  • Page 8: 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--...

  • Page 9: Primary Circuit, Type Bw, Bwc

    Preparing for installation Primary circuit, type BW, BWC With a water/water heat pump conversion kit Hydraulic installation scheme --2/X3.8;3.9-- --2/X3.8;3.9-- ---------...
  • Page 10 Preparing for installation Primary circuit, type BW, BWC (cont.) Note In the case of type BW, no circulation Type BWC is illustrated. In this case, the pumps are factory-fitted. For the connec- circulation pumps are fitted and connec- tion, see "Electrical installation ted at the factory (primary pump qT, sec- scheme".
  • Page 11 Preparing for installation Primary circuit, type BW, BWC (cont.) With well pump connection 230 V~ 200 W sYYA X2.N X3.3 230 V; 0.15 A X3.4 X3.9 230 V; 0.15 A X3.8 230 V; 0.15 A Well pump on-site connection 400 V~ 200 W 211.1 X2.N...

  • Page 12: Primary Circuit, Type Bw + Bws (2-Stage)

    Preparing for installation Primary circuit, type BW + BWS (2-stage) With water/water heat pump conversion kit, incl. 2 primary pumps Hydraulic installation scheme --F2-- --2/X3.8;3.9-- --2/224.2-- --2/211.1-- --F3-- --2/X3.8;3.9-- ---------...
  • Page 13 Preparing for installation Primary circuit, type BW + BWS (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 54) Primary circuit return temperature sensor (for installation, see page 54) Frost stat, primary circuit...
  • Page 14 Preparing for installation Primary circuit, type BW + BWS (2-stage) (cont.) Well pump on-site connection 230 V~ 200 W 211.1 200 W 224.2...
  • Page 15 Preparing for installation Primary circuit, type BW + BWS (2-stage) (cont.) Well pump on-site 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; 0.15 A X3.4 X3.8 230 V; 0.15 A X3.9 230 V;...
  • Page 16 Preparing for installation Primary circuit, type BW + BWS (2-stage) (cont.) With water/water heat pump conversion kit, incl. one common primary pump Note If the first and second stage heat pumps (type BW and type BWS) are installed with different rated heating outputs, 2 pri- mary pumps are required due to the dif- ferent flow rates.
  • Page 17 Preparing for installation Primary circuit, type BW + BWS (2-stage) (cont.) Hydraulic installation scheme --F2-- --F3-- --2/X3.8;3.9-- ---------...
  • Page 18 Preparing for installation Primary circuit, type BW + BWS (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 54) Primary circuit return temperature sensor (for installation, see page 54) Frost stat, primary circuit...
  • Page 19 Preparing for installation Primary circuit, type BW + BWS (2-stage) (cont.) Well pump on-site connection 400 V~ 211.1 224.2 200 W X2.N X2.N Connecting the sensors and limiters X3.3 230 V; 0.15 A X3.4 X3.8 230 V; 0.15 A X3.9 230 V;...

  • Page 20: Requirements Regarding On-Site Connections

    Preparing for installation Requirements regarding on-site connections Single stage (type BW/BWC 351.A07) 230 V < 42 V...
  • Page 21 Preparing for installation Requirements regarding on-site connections (cont.) Two-stage (type BW 351.A07 + BWS 351.A07) 230 V 230V 230 V < 42 V < 42 V < 42 V Heating flow Flow, DHW cylinder Return, secondary circuit (heating return and DHW cylinder re- turn) Return, primary circuit (heat pump brine outlet) Flow, primary circuit (heat pump brine inlet)

  • Page 22: Siting Requirements

    Preparing for installation Requirements regarding on-site connections (cont.) Install hydraulic connections on site stress-free. Cable lengths in the heat pump plus wall clearance: Type BW and BWC Heat pump control unit pow- 1.0 m The power is supplied via er supply (230 V~) connecting cable.
  • Page 23 Preparing for installation Siting requirements (cont.) Please note Minimum clearances Observe the permissible floor load. Single stage (type BW/BWC) ■ Align the appliance horizon- tally. If the adjustable feet are used to compensate for an uneven floor (max. 10 mm), the pres- sure load on the feet must be ≥...
  • Page 24 Preparing for installation Siting requirements (cont.) Two-stage (type BW and BWS) ≥ 400 = 100 A ■ With hydraulic module (acces- B ■ With AC-Box (accessory, for sory, for installation above the installation to the left of the heat heat pump): pump): 340 mm ≥...
  • Page 25 Preparing for installation Siting requirements (cont.) Information on the use of accessories for a heating/cooling circuit or sepa- rate cooling circuit AC-Box for active cooling function ■ The AC-Box can only be used up to a rated heating output of ≤ 17.6 kW. For higher rated heating outputs, install all the components required on site (with correspondingly sized plate heat...

  • Page 26: Installation Sequence

    Installation sequence Siting the heat pump Removing the transport brackets and levelling the heat pump...
  • Page 27 Installation sequence Siting the heat pump (cont.) Please note 2. Position and level the heat pump hor- Operating the appliance with- izontally as described on page 22. out first removing the trans- port brackets may cause vibrations and excessive noise. Remove the transport brack- ets.
  • Page 28 Installation sequence Siting the heat pump (cont.) Removing the top panel...

  • Page 29: Making The Hydraulic Connections

    Note Ensure frost protection down to –19 °C. Viessmann heat transfer medium is a ready-mixed ethylene glycol-based medium. It contains inhibitors for cor- rosion protection. The heat transfer medium can be used at temperatures down to –19 °C.
  • Page 30 Installation sequence Making the hydraulic connections (cont.) Note For diaphragm grommets, see page 69. Connecting the secondary circuit 1. Equip the secondary circuit on site 3. Fill and vent secondary circuit. with an expansion vessel and safety assembly (to DIN 4757). 4.

  • Page 31: Electrical Connection

    Installation sequence Electrical connection Installing the programming unit (type BW 351.A07 and BWC 351.A01)
  • Page 32 Installation sequence Electrical connection (cont.) [XÖ Routing cables to the wiring chamber Danger Danger Damaged cable insulation can Incorrect wiring can lead to seri- cause injury and damage to the ous injury from electrical current appliance. and result in appliance damage. Route cables so that they cannot Observe the following points touch very hot, vibrating or sharp-...
  • Page 33 Installation sequence Electrical connection (cont.) ■ Route LV cables < 42 V separately This ensures that, in the event of a fault from cables > 42 V/230 V~/400 V~. (e.g. when detaching a wire), the wires ■ Strip the insulation from the cables as cannot drift into the adjacent voltage close to the terminals as possible, and area.
  • Page 34 Installation sequence Electrical connection (cont.) Note Route LV leads and 230 V~ cables as far apart as possible.
  • Page 35 Installation sequence Electrical connection (cont.) Making the electrical connection for stage 1 heat pump (type BW) and stage 2 heat pump (type BWS) < 42 V 230 V~ < 42 V 230 V~...
  • Page 36 Installation sequence Electrical connection (cont.) A Wiring chamber, heat pump stage 2 C 230 V~ connecting cables: (type BWS) ■ With plugs without ID for the wir- B Connecting cables, LV < 42 V: ing chamber, heat pump stage 2 ■...
  • Page 37 Installation sequence Electrical connection (cont.) Main PCB Information regarding the connection Set the required parameters during com- values missioning; see from page 74. ■ The specified output is the recommen- ded connected load. ■ The total output of all components con- nected directly to the heat pump con- trol unit (e.g.
  • Page 38 Installation sequence Electrical connection (cont.) Terminals Function Explanation 211.2 Secondary pump (heat ■ In systems without a heating water buf- pump stage 1) fer cylinder, no other heating circuit pump is required (see terminal 212.2). ■ Connect a temperature limiter to restrict the maximum temperature for under- floor heating circuits (if installed) in ser- ies.
  • Page 39 Installation sequence Electrical connection (cont.) Plug sYS Terminals Function Explanation 212.1 Switching the active cooling AC-Box or on-site components for AC function cooling Connection values ■ Output: 10 W ■ Voltage: 230 V~ ■ Max. switching current: 4(2) A 212.2 Heating circuit pump for ■...
  • Page 40 Installation sequence Electrical connection (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 Connection A to Circulation pump C control unit Heating circuit without mixer A1/HC1...
  • Page 41 Installation sequence Electrical connection (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 42 Installation sequence Electrical connection (cont.) Expansion PCB on main PCB Information regarding the connection Set the required parameters during com- values missioning; see from page 74. ■ The specified output is the recommen- ded connected load. ■ The total output of all components con- nected directly to the heat pump con- trol unit (e.g.
  • Page 43 Installation sequence Electrical connection (cont.) Terminals Function Explanation 222.3 222.4 Control of external heat Floating contact generators and 1 high limit safety cut-out each (on site, Connection values (contact breaking ca- max. 70 °C), to switch off or pacity) switch between the follow- ■...
  • Page 44 Installation sequence Electrical connection (cont.) High limit safety cut-out for heat C Connection on the external 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 45 Installation sequence Electrical connection (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 Connection values pump stage 2 ■ Output: 200 W ■ Voltage: 230 V~ ■...
  • Page 46 Installation sequence Electrical connection (cont.) Terminals Function Explanation 224.7 Circulation pump for DHW Connection values reheating ■ Output: 100 W ■ Voltage: 230 V~ Control of immersion heater ■ Max. switching current: 4(2) A (in DHW cylinder) Immersion heater (400 V~) 224.7 X2.N A Immersion heater, power supply...
  • Page 47 Installation sequence Electrical connection (cont.) Immersion heater (230 V~, on site) 224.7 X2.N A Immersion heater, power supply B Terminals of the heat pump control 1/N/PE 230 V/50 Hz unit...
  • Page 48 Installation sequence Electrical connection (cont.) Plug sXG Terminals Function Explanation 225.1 Heating circuit pump of the Connect a temperature limiter to restrict heating circuit with mixer the maximum temperature for underfloor M2/HC2 heating circuits (if installed) in series. Connection values: ■...
  • Page 49 Installation sequence Electrical connection (cont.) Signal and safety connections Terminals Function Explanation Fuse 6.3 A (slow) Earth conductor X1.? Terminals for earth conductor of all asso- ciated system components Neutral conductor X2.N Terminals for neutral conductor of all as- sociated system components ■...
  • Page 50 Installation sequence Electrical connection (cont.) Terminals Function Explanation X3.3 X3.4 Flow switch Requires floating N/O contact (activa- ted): ■ Closed: Heat pump in operation ■ Open: Heat pump shut down ■ Breaking capacity 230 V~, 0.15 A ■ Jumper is used in some devices. ■...
  • Page 51 Installation sequence Electrical connection (cont.) Terminals Function Explanation X3.8 X3.9 Pressure switch, primary Requires zero volt N/C contact: circuit ■ Closed: Safety chain has continuity and/or ■ Open: Safety chain interrupted; heat pump shut down ■ Breaking capacity 230 V~, 0.15 A Frost stat ■...
  • Page 52 Installation sequence Electrical connection (cont.) Terminals Function Explanation X3.17 Fuse F1 6.3 A (slow) X3.18 X3.18 Heat pump control unit Power supply 230 V~ power supply: Phase L1 X1.1 Earth conductor con- nection X2.1 Neutral conductor connection Controller and sensor PCB Set the required parameters during com- Note missioning;...
  • Page 53 Heat pump control unit is slave Heat pump control unit is master (delivered condi- tion) Modbus 1 Viessmann devices If other Viessmann devices are to be connected, plug in the Modbus distributor (accessory). Connection, LON communication module (accessory) Coding card slot a:DA...
  • Page 54 Installation sequence Electrical connection (cont.) Connection of primary circuit flow/return temperature sensor, 2-stage heat pump < 42 V aS Flow temperature sensor, primary aD Return temperature sensor, primary circuit circuit...
  • Page 55 Installation sequence Electrical connection (cont.) Please note Identify sensor leads. Fasten sensor leads and discon- nected leads (with plug aS/aD) together with the other low volt- age leads using the cable ties provided. Swimming pool heating Note ■ Swimming pool heating is controlled via extension EA1 with KM BUS.
  • Page 56 Installation sequence Electrical connection (cont.) L1 N A Extension EA1 G Circulation pump for swimming pool B Power supply 1/N/PE 230 V/50 Hz heating (accessory) H Thermostat for swimming pool tem- C Junction box (on site) perature control (floating contact: D Fuses and contactor for circulation 230 V~, 0.1 A, accessories) pump for swimming pool heating...

  • Page 57: Power Supply

    Installation sequence Power supply Isolators for non-earthed conductors Danger ■ The mains isolator (if installed) must Incorrect core allocation can simultaneously isolate from the mains result in serious injury and dam- all non-earthed conductors with a min- age to the appliance. imum contact separation of 3 mm.
  • Page 58 Installation sequence Power supply (cont.) ■ The heat pump control unit/PCB Information regarding the compres- must be supplied with power without sor power supply being interrupted by the power supply ■ utility. Tariffs subject to possible shut- Please note down must not be used here. Incorrect phase sequence can The power supply for the heat pump cause damage to the appli-...
  • Page 59 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 3/N/PE down during the power-OFF time. 400 V/50 Hz ■ Recommended power cable: 5 x 2.5 mm Max.
  • Page 60 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 61 Installation sequence Power supply (cont.) Two-stage (type BW + 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 62 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 63 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 64 Installation sequence Power supply (cont.) H Economy tariff meter L Heat pump compressor stage 2 (type BWS) K Feed: TNC system Mains power supply in conjunction with on-site power consump- tion Without power-OFF E1E2 D /D L1 L1 L2 L2 L3 L3 A Heat pump C Electricity meter B Additional consumers (of power...
  • Page 65 Installation sequence Power supply (cont.) G Double-tariff meter (for special tariff K Meter with reverse block: for heat pump) For energy generated by PV sys- Not permissible in conjunction with PV systems for on-site power con- L Isolator for the domestic power sup- sumption ply connection (distribution panel) H Bi-directional meter (for PV systems...
  • Page 66 Installation sequence Power supply (cont.) Version 1 A Over/undervoltage in % B Phase asymmetry in % <>U <>U C Switching delay in s D Contact used in safety chain (N/O) E ON/OFF indicator ("Rel") F Fault display phase failure/phase sequence ("Ph") G Fault display asymmetry ("Asy") H Fault display over/undervoltage ("<>U")

  • Page 67: Make Connections At 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 68: Closing The Heat Pump

    Installation sequence Closing the heat pump Please note Danger Leaking hydraulic connections If system components are not lead to appliance damage. earthed, serious injury from elec- ■ Check internal hydraulic con- tric current can result if an elec- nections for leaks. trical fault occurs.

  • Page 69: Checking The Diaphragm Grommets

    Installation sequence Checking the diaphragm grommets Please note Seal diaphragm grommets A Seal the appliance so it is sound- with adhesive tape if necessary. proof and diffusion-proof. With the hose outlets, ensure dia- phragm grommets A are seated correctly.

  • Page 70: 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............ 71 • 2. Writing reports..............71 •...

  • Page 71: Further Details Regarding The Individual Steps

    Commissioning, inspection, maintenance Further details regarding the individual steps Opening the heat pump Danger Please note Contact with 'live' components Wait at least 30 min between the can lead to serious injury from installation and commissioning of electric current. the appliance to prevent equip- ■...

  • Page 72: Checking The Refrigerant Circuit For Leaks

    Viessmann heat transfer medium and vent. Note Ensure frost protection down to –19 °C. Viessmann heat transfer medium is a ready-mixed ethylene glycol-based medium. It contains inhibitors for cor- rosion protection. The heat transfer medium can be used at temperatures down to –19 °C.

  • Page 73: Checking Expansion Vessels And The Primary Circuit/ Heating Circuit Pressure

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) ■ Flush the heating system thoroughly Please note before filling. Avoid appliance damage. ■ Only fill with water of potable quality. ■ Check the secondary circuit ■ Soften fill water with a water hardness flow and return connections to the heat pump for tight- above 16.8 °dH (3.0 mol/m...

  • Page 74: Commissioning The System

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Commissioning the system Commissioning (configuration, parame- Note ter settings and function check) can be The type and extent of the parameters carried out with or without the commis- depend on the appliance type, on the sioning wizard (see following chapter selected system scheme and the acces- and service instructions for the heat...
  • Page 75 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Language Date Time Date/time Start commissioning? Parameter group Parameter Coding 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 Function check...
  • Page 76 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Commissioning without the commissioning assistant Enabling the service menu Service menu: 1. Press OK + å simultaneously for The service menu can be enabled from approx. 4 s any menu. 2.
  • Page 77 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) System scheme Overview of all available system schemes Compo- System scheme nent Heating circuit A1/HC1 — — — — — — M2/HC2 — — — — M3/HC3 — — — —...
  • Page 78 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Pumps and other components Pump/component Parameter Setting Heating circuit pump "System definition" Ó ■ With heating circuit A1/ HC1 (for heating circuit "System scheme 7000" without mixer) ■ With heating circuit M2/ HC2 (for heating circuit with mixer) ■...
  • Page 79 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Pump/component Parameter Setting For a separate cooling cir- "1" cuit: "Cooling" Ó "Remote control, cooling circuit 7116" "Cooling" Ó "0" F16 "Ranking room temp. "1" A1/HC1 sensor separate cooling "2" M2/HC2 circuit 7106"...
  • Page 80 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) External functions External functions Parameter Setting External demand "Internal hydraulics", if ap- Set flow temperature plicable Ó for external demand "Flow temperature for ex- ternal demand 730C" External starting of the com- "System definition"...
  • Page 81 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 82 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Solar Parameters for solar thermal system in con- Setting junction with solar control module, type SM1 "Solar" Ó "3" "Type solar control unit 7A00" "Solar" Ó See installation and service in- structions for "solar control mod- Parameter C0xx ule, type SM1".
  • Page 83 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Energy meter Electricity meter parameters Setting "Photovoltaics" Ó "1" "Enable own energy consumption PV 7E00" "Photovoltaics" Ó "0" to "300" "Threshold for electrical power 7E04" (≙ 0 to 30 kW) Extended menu: "PV ctrl strategy"...
  • Page 84 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Ventilation unit parameters Setting If applicable, adjust values (subject to sizing): "Ventilation" Ó ■ "Set extract air temperature 7D08" "100" to "300" (≙ 10 to 30 °C) ■ "Flow rate reduced ventilation 7D0A" "95"...

  • Page 85: Instructing The System User

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) The additional parameters for the heat pump cascade are set during commis- sioning by the certified heat pump con- tractor. Instructing the system user The system installer should hand the operating instructions to the system user and instruct the user in operating the system.

  • Page 86: Troubleshooting

    Troubleshooting Repairs Overview of wiring chamber Type BW 351.A07 and BWC 351.A07...
  • Page 87 Troubleshooting Repairs (cont.) Type BWS 351.A07 A Transformer EEV PCB L Main PCB B EEV PCB (refrigerant circuit control- M Expansion PCB on the main PCB ler) N Compressor power supply C Phase monitor O Cross connect PCB D Compressor contactor Q Plug for <...
  • Page 88 Troubleshooting Repairs (cont.) Opening the casing door...
  • Page 89 Troubleshooting Repairs (cont.) Internal components overview Type BWC 351.A07...
  • Page 90 Troubleshooting Repairs (cont.) Type BWC 351.A07...
  • Page 91 Troubleshooting Repairs (cont.) Heating flow L Secondary circuit return tempera- ture sensor M Drain valve on the secondary side Flow, DHW cylinder N Circulation pump for cylinder heat- ing (accessory for Return, secondary circuit (heat- type BW 351.A07, installation out- ing return and DHW cylinder re- side the heat pump) with check turn)
  • Page 92 2 (F18) ■ Flow temperature sensor, secondary circuit for heat pump stage 2 (F27) ■ Sensors in the refrigerant circuit Viessmann NTC 10 kΩ (marked blue) Other sensors Outside temperature sensor 10 30 50 70 90 110 -20 -10 10 20 30 Temperature in °C...
  • Page 93 Troubleshooting Repairs (cont.) Viessmann Pt500A (marked green) 140 180 Temperature in °C Checking MCB/fuses Fuse arrangement (see page 36): Danger ■ Fuse F1 is located on the cross con- Contact with 'live' components nect PCB. can lead to serious injury from ■...
  • Page 94 Troubleshooting Repairs (cont.) Condensation and humidity in the heat pump module Possible causes: ■ Hose outlets in diaphragm grommets not watertight: See page 69. ■ Casing door not tightly sealed: See page 88. ■ Outer panels are not diffusion-proof...

  • Page 95: Parts Lists, Vitocal 350-G, Type Bw 351.A07

    Parts lists, Vitocal 350-G, type BW 351.A07 Overview of assemblies, type BW A Type plate D Heat pump module assembly B Casing assembly E Hydraulics assembly C Electrical equipment assembly...

  • Page 96: Parts Not Shown, Type Bw

    Parts lists, Vitocal 350-G, type BW 351.A07 Parts not shown, type BW Pos. Component Part no. 0005 Screws (set) 7835116 0006 Touch-up paint stick, Vitosilver 7819546 0007 Touch-up spray paint, Vitosilver, 150 ml can 7819545 0008 Heat pump installation and service instructions...
  • Page 97 Parts lists, Vitocal 350-G, type BW 351.A07 Casing, type BW (cont.) 0005 0007 0020 0016 0015 0009 0014 0008 0002 0015 0018 0003 0014 0022 0002 0010 0003 0001 0001 0001 0001 0015 0006 0013 0019 0017 0012 0011 0004...

  • Page 98: Electrical Equipment, Type Bw

    Parts lists, Vitocal 350-G, type BW 351.A07 Electrical equipment, type BW Pos. Component Part no. 0001 Programming unit, Vitotronic 200 WO1C heat pump control unit 7841889 0002 Controller and sensor PCB with cover (CU401) 7840551 0003 Base support, controller and sensor PCB (CU 401)
  • Page 99 Parts lists, Vitocal 350-G, type BW 351.A07 Electrical equipment, type BW (cont.) 0007 0040 0038 0042 0030 0041 0006 0002 0039 0004 0001 0023 0003 0022 0036 0005 0012 0009 0024 0025 0027 0028 0027 0025 0028 0043 0008 0050...

  • Page 100: Heat Pump Module, Type Bw

    Parts lists, Vitocal 350-G, type BW 351.A07 Heat pump module, type BW Pos. Component Part no. 0001 Compressor 7828839 0002 Heat exchanger (evaporator) 7835512 0003 Heat exchanger (condenser) 7835054 0004 Electronic expansion valve 7835024 0005 Filter dryer 7835018 0006 Pressure sensor (PT5-7T)
  • Page 101 Parts lists, Vitocal 350-G, type BW 351.A07 Heat pump module, type BW (cont.) 0002 0022 0009 0013 0026 0025 0006 0015 0020 0021 0025 0026 0023 0008 0022 0025 0026 0009 0007 0003 0013 0019 0014 0015 0005 0001 0026...

  • Page 102: Hydraulics, Type Bw

    Parts lists, Vitocal 350-G, type BW 351.A07 Hydraulics, type BW Pos. Component Part no. 0001 Spring clip, sensor 7836480 0002 Air vent valve G ⅜ 7822353 0003 Gasket A 30 x 44 x 2 7828859 0004 Drain & fill valve G⅜...
  • Page 103 Parts lists, Vitocal 350-G, type BW 351.A07 Hydraulics, type BW (cont.) 0010 0003 0011 0012 0017 0005 0013 0016 0001 0014 0017 0016 0005 0005 0001 0002 0017 0006 0005 0017 0009 0001 0016 0017 0005 0004 0003 0007 0017...

  • Page 104: Parts Lists, Vitocal 350-G, Type Bws 351.A07

    Parts lists, Vitocal 350-G, type BWS 351.A07 Overview of assemblies, type BWS A Type plate D Assembly, heat pump module B Assembly, casing E Assembly, hydraulics C Assembly, electrical equipment...

  • Page 105: Parts Not Shown, Type Bws

    Parts lists, Vitocal 350-G, type BWS 351.A07 Parts not shown, type BWS Pos. Component Part no. 0005 Screws (set) 7835116 0006 Touch-up paint stick, Vitosilver 7819546 0007 Touch-up spray paint, Vitosilver, 150 ml can 7819545 0008 Heat pump installation and service instructions...
  • Page 106 Parts lists, Vitocal 350-G, type BWS 351.A07 Casing, type BWS (cont.) 0007 0020 0005 0016 0009 0015 0014 0002 0014 0010 0003 0022 0015 0006 0002 0003 0022 0015 0001 0013 0017 0011 0012 0004...

  • Page 107: Electrical Equipment, Type Bws

    Parts lists, Vitocal 350-G, type BWS 351.A07 Electrical equipment, type BWS Pos. Component Part no. 0008 Refrigerant circ controller 7840535 0009 Full wave soft starter 7837405 0024 Switching module, compressor 350-G 7843350 0025 Contactor, 3-pole 7817643 0027 Thermal relay 7816452...
  • Page 108 Parts lists, Vitocal 350-G, type BWS 351.A07 Electrical equipment, type BWS (cont.) 0030 0024 0025 0027 0009 0027 0025 0043 0050 0008 0057 0049 0055...

  • Page 109: Heat Pump Module, Type Bws

    Parts lists, Vitocal 350-G, type BWS 351.A07 Heat pump module, type BWS Pos. Component Part no. 0001 Compressor 7828839 0002 Heat exchanger (evaporator) 7835512 0003 Heat exchanger (condenser) 7835054 0004 Electronic expansion valve 7835024 0005 Filter dryer 7835018 0006 Pressure sensor (PT5-7T)
  • Page 110 Parts lists, Vitocal 350-G, type BWS 351.A07 Heat pump module, type BWS (cont.) 0002 0022 0009 0013 0026 0025 0006 0015 0020 0021 0025 0026 0023 0008 0022 0025 0026 0009 0003 0007 0013 0019 0014 0015 0005 0001 0026...

  • Page 111: Hydraulics, Type Bws

    Parts lists, Vitocal 350-G, type BWS 351.A07 Hydraulics, type BWS Pos. Component Part no. 0001 Spring clip, sensor 7836480 0002 Air vent valve G ⅜ 7822353 0003 Gasket A 30 x 44 x 2 7828859 0004 Drain & fill valve G⅜...
  • Page 112 Parts lists, Vitocal 350-G, type BWS 351.A07 Hydraulics, type BWS (cont.) 0010 0003 0011 0012 0017 0005 0013 0016 0001 0014 0017 0016 0005 0005 0001 0002 0017 0006 0005 0017 0009 0001 0016 0017 0005 0004 0003 0007 0017...

  • Page 113: Parts Lists, Vitocal 350-G, Type Bwc 351.A07

    Parts lists, Vitocal 350-G, type BWC 351.A07 Overview of assemblies, type BWC A Type plate C Assembly, electrical equipment B Assembly, casing...

  • Page 114: Parts Not Shown, Type Bwc

    Parts lists, Vitocal 350-G, type BWC 351.A07 Overview of assemblies, type BWC (cont.) D Assembly, heat pump module E Assembly, hydraulics Parts not shown, type BWC Pos. Component Part no. 0005 Screws (set) 7835116 0006 Touch-up paint stick, Vitosilver 7819546...
  • Page 115 Parts lists, Vitocal 350-G, type BWC 351.A07 Casing, type BWC (cont.) 0005 0007 0020 0016 0015 0009 0014 0008 0002 0015 0018 0003 0014 0022 0002 0010 0003 0001 0001 0001 0001 0015 0006 0013 0019 0017 0012 0011 0004...

  • Page 116: Electrical Equipment, Type Bwc

    Parts lists, Vitocal 350-G, type BWC 351.A07 Electrical equipment, type BWC Pos. Component Part no. 0001 Programming unit, Vitotronic 200 WO1C heat pump control unit 7841889 0002 Controller and sensor PCB with cover (CU401) 7840551 0003 Base support, controller and sensor PCB (CU401)
  • Page 117 Parts lists, Vitocal 350-G, type BWC 351.A07 Electrical equipment, type BWC (cont.) 0007 0040 0030 0042 0038 0041 0006 0002 0039 0023 0004 0001 0022 0003 0036 0012 0005 0009 0024 0025 0027 0027 0028 0025 0028 0045 0047 0046...

  • Page 118: Heat Pump Module, Type Bwc

    Parts lists, Vitocal 350-G, type BWC 351.A07 Heat pump module, type BWC Pos. Component Part no. 0001 Compressor 7828839 0002 Heat exchanger (evaporator) 7835512 0003 Heat exchanger (condenser) 7835054 0004 Electronic expansion valve 7835024 0005 Filter dryer 7835018 0006 Pressure sensor (PT5-7T)
  • Page 119 Parts lists, Vitocal 350-G, type BWC 351.A07 Heat pump module, type BWC (cont.) 0002 0022 0009 0013 0026 0025 0006 0015 0020 0021 0025 0026 0023 0008 0022 0025 0026 0009 0007 0003 0013 0019 0014 0015 0005 0001 0026...

  • Page 120: Hydraulics, Type Bwc

    Parts lists, Vitocal 350-G, type BWC 351.A07 Hydraulics, type BWC Pos. Component Part no. 0001 Gasket 7814728 0002 Spring clip, sensor 7836480 0003 Air vent valve G ⅜ 7822353 0004 Temperature sensor Pt500A 7836461 0005 Gasket A 30 x 44 x 2...
  • Page 121 Parts lists, Vitocal 350-G, type BWC 351.A07 Hydraulics, type BWC (cont.) 0012 0005 0023 0004 0005 0002 0009 0005 0001 0014 0001 0005 0001 0015 0007 0001 0013 0003 0001 0013 0018 0001 0001 0001 0021 0005 0017 0011 0016...

  • Page 122: Commissioning/Service Reports

    Commissioning/service reports Hydraulic parameters report Setting and test values Setpoint Commis- Mainte- sioning nance/Serv- Frost protection (brine medi- °C –19 Testing the external heating circuit pumps Circulation pump type Circulation pump stage Overflow valve setting Commissioning, primary circuit Primary circuit flow tempera- °C ture ("Diagnosis"...

  • Page 123: Control Parameters Report

    Commissioning/service reports Control parameters report Parameter description "Vitotronic 200" service instruc- tions System definition Parameter Code Delivered Commis- Mainte- condition sioning nance/ Service "System scheme" (see chapter 7000 "Overview of possible system schemes") "Temperature differential for 7003 40 (≙ 4 K) calculating the heating limit"...
  • Page 124 Commissioning/service reports Control parameters report (cont.) Parameter Code Delivered Commis- Mainte- condition sioning nance/ Service "Min. pause time summer 7035 60 min mode" "Last calendar week for sum- 7036 mer mode" "Absorber circuit monitoring" 7037 "Temperature sensor for dual 7038 mode operation"...
  • Page 125 Commissioning/service reports Control parameters report (cont.) External heat generator Parameter Code Delivered Commis- Mainte- condition sioning nance/ Service "Enable external heat source" 7B00 "Priority ext. heat source/in- 7B01 stant. heating water heater" "Dual mode temperature ex- 7B02 100 (≙ 10 °C) ternal heat source"...
  • Page 126 Commissioning/service reports Control parameters report (cont.) Parameter Code Delivered Commis- Mainte- condition sioning nance/ Service "Set DHW temperature" 6000 500 (≙ 50 °C) "Min. DHW temperature" 6005 100 (≙ 10 °C) "Max. DHW temperature" 6006 600 (≙ 60 °C) "Hysteresis DHW temperature 6007 50 (≙...
  • Page 127 Commissioning/service reports Control parameters report (cont.) Solar Parameter Code Delivered Commis- Mainte- condition sioning nance/ Service "Type solar control unit" 7A00 Parameters for solar control C0xx These parameters will only be displayed module, type SM1 if the solar control module, type SM1, is connected to the heat pump and "Type solar control unit"...
  • Page 128 Commissioning/service reports Control parameters report (cont.) Internal hydraulics Parameter Code Delivered Commis- Mainte- condition sioning nance/ Service "Heat pump for drying a build- 7300 ing" "Time program for screed dry- 7303 ing" "Set flow temperature for ex- 730C 500 (≙ 50 °C) ternal demand"...
  • Page 129 Commissioning/service reports Control parameters report (cont.) Heating circuit 1 Parameter Code Delivered Commis- Mainte- condition sioning nance/ Service "Standard room temperature" 2000 200 (≙ 20 °C) "Reduced room temperature" 2001 160 (≙ 16 °C) "Remote control" 2003 "Heating curve level" 2006 0 (≙...
  • Page 130 Commissioning/service reports Control parameters report (cont.) Heating circuit 3 Parameter Code Delivered Commis- Mainte- condition sioning nance/ Service "Standard room temperature" 4000 200 (≙ 20 °C) "Reduced room temperature" 4001 200 (≙ 20 °C) "Remote control" 4003 "Heating curve level" 4006 0 (≙...
  • Page 131 Commissioning/service reports Control parameters report (cont.) Ventilation Parameter Code Delivered Commis- Mainte- condition sioning nance/ Service "Vitovent enable" 7D00 "Enable preheater bank elec- 7D01 tric" "Enable reheater bank hy- 7D02 draulic" "Enable humidity sensor" 7D05 "Enable CO2 sensor" 7D06 "Set extract air temperature" 7D08 200 (≙...
  • Page 132 Commissioning/service reports Control parameters report (cont.) Photovoltaics Parameter Code Delivered Commis- Mainte- condition sioning nance/ Service "Enable own energy con- 7E00 sumption PV" "Prop. of external current" 7E02 10 (≙ 10 %) "Threshold for electrical pow- 7E04 0 (≙ 0 W) er"...
  • Page 133 Commissioning/service reports Control parameters report (cont.) Communication Parameter Code Delivered Commis- Mainte- condition sioning nance/ Service "Number of heat pump in cas- 7707 cade" "Enable LON communication 7710 module" "LON subscriber number" 7777 "LON fault manager" 7779 "LON system number" 7798 "Interval for data transfer via 779C...

  • Page 134: Specification

    Specification Specification Type BW/BWS 351.A07 Output data to EN 14511 (B0/W35, 5 K spread) Rated heating output 7.35 Cooling capacity 5.83 Power consumption 1.63 Coefficient of performance ε (COP) 4.50 Output data with reference to EN 255 (B0/W35, 10 K spread) Rated heating output 7.55 Cooling capacity...
  • Page 135 Specification Specification (cont.) Type BW/BWS 351.A07 Refrigerant circuit Refrigerant R134a Refrigerant charge 2.35 Permiss. operating pressure, low pressure side Permiss. operating pressure, high pressure side Compressor Type Hermetically sealed scroll Oil in compressor Type Emkarate RL32 3MAF Permiss. operating pressure Primary circuit Secondary circuit Dimensions...
  • Page 136 Specification Specification (cont.) BWC type 351.A07 Output data with reference to EN 255 (B0/W35, 10 K spread) Rated heating output 7.59 Cooling capacity 6.12 Power consumption 1.58 Coefficient of performance ε (COP) 4.81 Brine (primary circuit) Contents Minimum flow rate 1100 Residual head (at minimum flow rate) mbar...
  • Page 137 Specification Specification (cont.) BWC type 351.A07 Refrigerant circuit Refrigerant R134a Refrigerant charge 2.35 Permiss. operating pressure, low pressure side Permiss. operating pressure, high pressure side Compressor Type Hermetically sealed scroll Oil in compressor Type Emkarate RL32 3MAF Permiss. operating pressure Primary circuit Secondary circuit Dimensions...
  • Page 138 Specification Specification (cont.) Type BW in conjunction with "conversion kit for water/wa- 351.A07 ter heat pump" Output data to EN 14511 (W10/W35, 5 K spread) Rated heating output 10.22 Cooling capacity 8.59 Power consumption 1.75 Coefficient of performance ε (COP) 5.83 Brine (primary circuit) Contents...
  • Page 139 Specification Specification (cont.) Type BW in conjunction with "conversion kit for water/wa- 351.A07 ter heat pump" Refrigerant circuit Refrigerant R134a Refrigerant charge 2.35 Permiss. operating pressure, low pressure side Permiss. operating pressure, high pressure side Compressor Type Hermetically sealed scroll Oil in compressor Type Emkarate RL32...
  • Page 140 Specification Specification (cont.) Type BWC in conjunction with "conversion kit for water/ 351.A07 water heat pump" Output data to EN 14511 (W10/W35, 5 K spread) Rated heating output 10.26 Cooling capacity 8.69 Power consumption 1.69 Coefficient of performance ε (COP) 6.07 Brine (primary circuit) Contents...
  • Page 141 Specification Specification (cont.) Type BWC in conjunction with "conversion kit for water/ 351.A07 water heat pump" Refrigerant circuit Refrigerant R134a Refrigerant charge 2.35 Permiss. operating pressure, low pressure side Permiss. operating pressure, high pressure side Compressor Type Hermetically sealed scroll Oil in compressor Type Emkarate RL32...

  • Page 142: Appendix

    Components for ventilation fully installed (optional) Components for PV system fully installed (optional) Preferred appointment: Date Time Date Time The work that is requested to be carried out by Viessmann will be billed in accordance with the latest Viessmann pricelist. Place/date Signature...

  • Page 143: Certificates

    Declaration of conformity We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, confirm as sole respon- sible body that the product Vitocal 350-G, type BW 351.A07, type WW 351.A07, type BWS 351.A07, type BWC 351.A07, type WWC 351.A07 incl. the heat pump...

  • Page 144: Keyword Index

    Keyword index Keyword index Connections Adjustable feet........23 – Expansion PCB......42 Aligning the appliance......23 – Hydraulic.........29 Ambient temperatures......22 – Main PCB........37 Appliance MCB/fuses......93 – Overview.........20 Appliance too noisy......93 – Primary circuit.........29 Assembly, casing – Secondary circuit......30 – Type BWC 351.A07......113 Connection values –...
  • Page 145 Keyword index Keyword index (cont.) Expansion PCB......42, 87 Instantaneous heating water heater6, 91 Expansion vessel....29, 30, 72 – Parameters........81 – Checking the pre-charge pressure. 73 Instructing the system user....85 Extended menu........76 Intended use........6 External extension......79 Internal components External functions......80 – Overview.........89 Isolators..........57 Feed.........60, 61, 63, 64 Filling...
  • Page 146 Keyword index Keyword index (cont.) Primary side Parameters – Draining..........91 – Cooling function......82 Product information......6 – Electric booster heater....81 Programming unit.......87 – External functions......80 – Installing.........31 – External heat source.......81 Pt500..........91 – For external extension....79 Pumps – For heating circuit pump....78 –...
  • Page 147 Keyword index Keyword index (cont.) Service..........71 Terminating service......76 Service menu Three phase monitor......65 – Calling up........76 Tightness test........73 – Disabling.........76 Tilting angle........22 – Enabling..........76 TNC system.....60, 61, 63, 64 Setting parameters......76 Top-up water........72 Siting..........20, 26 Total weight........23 Solar air absorber......82 Transport brackets.......26, 93 Solar thermal system –...
  • Page 148 Applicability Serial No.: 7514658 7514657 7514660 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...

This manual is also suitable for:

Bw 351.a07Bws 351.a07Bwc 351.a07

Table of Contents