Viessmann VITOCAL 242-G Installation And Service Instructions Manual
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Viessmann VITOCAL 242-G Installation And Service Instructions Manual

Compact heat pumps
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VIESMANN
Installation and service instructions
for contractors
Vitocal 242-G
Type BWT 241.A06 to A10
Type BWT-M 241.A06 to A10
Compact heat pumps, 400 V~ and 230 V~
For applicability, see the last page
VITOCAL 242-G
Please keep safe.
5673 976 GB
1/2017

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Summary of Contents for Viessmann VITOCAL 242-G

  • Page 1 VIESMANN Installation and service instructions for contractors Vitocal 242-G Type BWT 241.A06 to A10 Type BWT-M 241.A06 to A10 Compact heat pumps, 400 V~ and 230 V~ For applicability, see the last page VITOCAL 242-G Please keep safe. 5673 976 GB...
  • Page 2 ■ Safeguard the system against reconnection. Repair work Please note Repairing components that fulfil a safety func- tion can compromise the safe operation of your system. Replace faulty components with genuine Viessmann spare parts.
  • Page 3 Spare and wearing parts that have not been tes- ted together with the system can compromise its function. Installing non-authorised components and making non-approved modifications or con- versions can compromise safety and may inva- lidate our warranty. For replacement, use only spare parts supplied or approved by Viessmann.

  • Page 4: Table Of Contents

    Checking the sensors ................56 Viessmann NTC 10 k (blue marking) ..........57 Ω ■ Viessmann NTC 20 k (orange marking) ........... 57 ■ Ω Viessmann Pt500A (green marking) ........... 58 ■ Checking the fuses ................58 Appliance is too noisy ................59...
  • Page 5 Index Index (cont.) 6. Parts lists type BWT 241.A Overview of assemblies ................. 60 (400 V~) Parts not shown .................. 61 ■ Casing ....................62 Control unit and electrical equipment ............ 64 Heat pump module ................66 Hydraulics ....................68 Cylinder ....................

  • Page 6: Information Symbols

    Information Symbols Symbol Meaning Reference to other document containing further information Additional information, not safety relevant Step in a diagram: The numbering corresponds to the se- quence of work. The work sequences for commissioning, inspection and maintenance are summarised in the chapter "Commissioning, inspection and maintenance "and are marked as follows: Symbol...

  • Page 7: Product Information

    Information Product information Layout Central cooling The Vitocal 242-G is a brine/water heat pump with an Central cooling utilising the natural cooling function integral loading cylinder. Solar collectors can be con- can be provided either by means of a heating/cooling nected for solar DHW heating.

  • Page 8: Preparing For Installation Requirements Regarding On-Site Connections

    Preparing for installation Requirements regarding on-site connections < 42 V 230 V~ 400 V~ Fig. 1 Secondary circuit flow (heating water) DHW circulation Secondary circuit return (heating water) Cold water Solar circuit flow Primary circuit return (heat pump brine outlet) Solar circuit return Primary circuit flow (heat pump brine inlet)

  • Page 9: Recommended Power Cables

    Preparing for installation Requirements regarding on-site connections (cont.) 1. Prepare the connections on the heating water and 2. Prepare the electrical connections. the DHW side. Flush the heating system. Cable lengths: ■ Required cable length inside the appliance plus dis- Connection of hydraulic pipes tance to wall: On-site connection:...

  • Page 10: Installation Room Requirements

    Preparing for installation Siting and transport requirements (cont.) Installation room requirements Please note Total weight with full DHW cylinder Unfavourable ambient conditions can lead to Type BWT/BWT-M Weight in kg malfunction and appliance damage. 241.A06 ■ The installation room must be dry and free 241.A08 from the risk of frost.

  • Page 11: Installation Sequence Siting The Heat Pump

    Installation sequence Siting the heat pump Removing the cylinder module Fig. 3...
  • Page 12 Installation sequence Siting the heat pump (cont.) a:C] a:C] a:C] Fig. 4...
  • Page 13 Installation sequence Siting the heat pump (cont.) Fig. 5 Fig. 6...
  • Page 14 Installation sequence Siting the heat pump (cont.) Fig. 7...
  • Page 15 Installation sequence Siting the heat pump (cont.) Fig. 8...

  • Page 16: Removing The Heat Pump Module

    Installation sequence Siting the heat pump (cont.) Removing the heat pump module Fig. 9...
  • Page 17 Installation sequence Siting the heat pump (cont.) 9. 4x Fig. 10 Fig. 11...

  • Page 18: Assembly And Sealing Faces To Note

    Installation sequence Siting the heat pump (cont.) Assembly and sealing faces to note 2. Mount the cylinder module in reverse order to that described on page 11. Please note Leaking hydraulic connections lead to appli- ance damage. Make watertight hydraulic connections ■...

  • Page 19: Removing The Transport Brackets

    Installation sequence Siting the heat pump (cont.) Removing the transport brackets Please note Operating the appliance without first removing the transport brackets may cause vibrations and excessive noise. Remove the transport brackets. Fig. 14 Hydraulic connections For arrangement of hydraulic connections: see page 8. Connecting the primary/secondary circuits Connecting the pipe sections or pipe bends sup- plied with the connection set (accessories)
  • Page 20 Installation sequence Hydraulic connections (cont.) 3. Connect primary pipes to heat pump. Please note Mechanically loaded hydraulic connections lead to leaks, vibration and appliance dam- age. Connect on-site lines so that they are free of load and torque stress. Please note Leaking hydraulic connections lead to appli- ance damage.

  • Page 21: Connecting The Dhw Side

    Installation sequence Hydraulic connections (cont.) 2. Connect secondary lines to the heat pump. Note ■ With underfloor heating circuits, install a temperature Please note limiter to restrict the maximum temperature of under- Mechanically loaded hydraulic connections floor heating systems: See chapter "Connecting a lead to leaks, vibration and appliance dam- temperature limiter to restrict the maximum tempera- age.

  • Page 22: Connecting A Heating/Cooling Circuit, If Required

    Installation sequence Hydraulic connections (cont.) Connecting a heating/cooling circuit, if required The connection is made via the NC-Box (accessories). Installation instructions for contact humidistat (24 V – Install in the coolant flow of the room to be cooled. If ■ For surface cooling systems (e.g.

  • Page 23: Overview Of The Heat Pump Control Unit Electrical Connections

    Installation sequence Electrical connections (cont.) Overview of the heat pump control unit electrical connections a:C] a:C] a:C] sYAsYS 400 V / 230 V / 50 Hz 50 Hz Fig. 19 Expansion PCB on main PCB: connect nothing on site. Main PCB: see page 24. F3 Fuse 6.3 A (slow) Controller and sensor PCB: see page 27.

  • Page 24: Main Pcb (230 V~ Components)

    Installation sequence Electrical connections (cont.) Main PCB (230 V~ components) Information regarding the connection values Set the required parameters during commissioning: The specified output is the recommended connected see page 43 onwards. ■ load. ■ The total output of all components connected directly to the heat pump control unit (e.g.
  • Page 25 Installation sequence Electrical connections (cont.) Plug Terminals Function Explanation 212.3 DHW circulation pump Connection values Output: 50 W ■ Voltage: 230 V~ ■ Max. switching current: 4(2) A ■ 212.4 Solar circuit pump with high limit safe- Connection values ty cut-out (up to 95 °C) for DHW cylin- Output: 130 W ■...

  • Page 26: Expansion Pcb On Main Pcb (230 V~ Components)

    Installation sequence Electrical connections (cont.) Connecting the temperature limiter, part no. 7151 728, 7151 729 to mixer extension kit sÖ sÖ Fig. 22 Connect plug sÖ to mixer extension kit Temperature limiter Heating circuit pump for heating circuit with mixer Expansion PCB on main PCB (230 V~ components) Do not make any on-site connections.

  • Page 27: Controller And Sensor Pcb (Lv Connections)

    Installation sequence Electrical connections (cont.) Terminals Function Explanation Note No parameters need to be set ■ The compressor is "forced" off as soon as the contact ■ opens. The power-OFF contact signal switches off the supply ■ voltage to the relevant components, subject to power supply utility.
  • Page 28 — Connection for Viessmann appliances, e.g. Vitovent 300-F Note If further Viessmann appliances are to be connected to Modbus 1, plug in the Modbus distributor (accessories) (see "Modbus distributor" installation in- structions). Connection for LON communication module (see "LON communication mod- —...

  • Page 29: Power Supply

    Installation sequence Electrical connections (cont.) [{{] 0-10V L1 N Fig. 23 EA1 extension Circulation pump for swimming pool heating Power supply 1/N/PE 230 V/50 Hz (accessories) Temperature controller for swimming pool temper- Junction box (on site) ature control (floating contact: 230 V~, 0.1 A, Fuses and contactor for circulation pump for swim- ming pool heating (accessories) accessories)

  • Page 30: Heat Pump Control Unit Power Supply 230 V

    Installation sequence Power supply (cont.) In negotiations with your power supply utility, differ- In conjunction with on-site power consumption (use ■ ■ ent supply tariffs for the main power circuits may be of power generated by the PV system to meet own offered.

  • Page 31: Compressor Power Supply 230 V

    Installation sequence Power supply (cont.) Compressor power supply 230 V~ No parameters need to be set when using economy ■ 230 V / 50 Hz tariff with power-OFF. The compressor is shut down 1/N/PE during the power-OFF time. Fig. 26 ■...

  • Page 32: Power Supply With Power-Off: With On-Site Load Disconnect

    Installation sequence Power supply (cont.) X3.7 X3.6 X3.18/X2.1/X1.1 (400 V~) 7 (230 V~) ≈ Fig. 29 Diagram excluding fuses and RCD. Heat pump control unit Instantaneous heating water heater Compressor Heat pump control unit power supply Premium tariff meter Ripple control receiver backup fuse Ripple control receiver (contact open: power-OFF enabled) Feed: TNC system...
  • Page 33 Installation sequence Power supply (cont.) X3.7 X3.6 X3.18/X2.1/X1.1 5 (400 V~) (230 V~) ≈ Fig. 30 Diagram excluding fuses and RCDs Heat pump control unit Instantaneous heating water heater Compressor Heat pump control unit power supply Premium tariff meter Ripple control receiver backup fuse Ripple control receiver (contact open: power-OFF enabled) with backup fuse Economy tariff meter...

  • Page 34: Mains Power Supply In Conjunction With On-Site Power Consumption

    Installation sequence Power supply (cont.) Mains power supply in conjunction with on-site power consumption Without power-OFF E1E2 D /D L1 L1 L2 L2 L3 L3 Fig. 31 Heat pump Bi-directional meter (for PV systems to consume Additional consumers (of power generated on site) power on site): Energy taken from power supply utility and energy in the household...

  • Page 35: Phase Monitor (Accessories)

    Installation sequence Power supply (cont.) [{{] 0-10V Fig. 32 EA1 extension Floating N/O contact 2: The agreement of the Connection to controller and sensor PCB power supply utility may be required Floating N/O contact 1: The agreement of the Power supply 1/N/PE 230 V/50 Hz power supply utility may be required Note ■...
  • Page 36 Installation sequence Power supply (cont.) Version 1 Version 2 N 11 21 <>U <>U L1 L2 L3 12 14 22 24 Fig. 34 LEDs explained in Fig. 34 Fig. 33 Voltage "U": ■ Illuminates green if voltage is applied. Over/undervoltage in % Relay "R": Phase asymmetry in % ■...

  • Page 37: Make Connections At Terminals X3.8/X3.9

    Installation sequence Power supply (cont.) Version 3 LEDs explained in Fig. 35 Voltage "Un": ■ Illuminates green if voltage is applied. Relay "R": ■ Illuminates yellow if the phase sequence is cor- rect. L1, L2, L3 Does not illuminate if the phase sequence is ■...

  • Page 38: Commissioning, Inspec-Steps - Commissioning, Inspection And Maintenance

    Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance Commissioning steps Inspection steps Maintenance steps Page • • • 1. Opening the heat pump..................... 39 • 2. Writing reports........................39 • • • 3. Checking the refrigerant circuit for leaks................ 39 •...

  • Page 39: Opening The Heat Pump

    Commissioning, inspection, maintenance Opening the heat pump Danger Please note Contact with 'live' components can lead to seri- Commissioning immediately after installation ous injury from electric current. can lead to appliance damage. ■ Never touch the wiring chambers (for heat Wait at least 30 min between installing and pump control unit and power supply connec- commissioning the appliance.

  • Page 40: Filling And Venting The Primary Side

    Temperature differential between primary circuit flow and return: 3 K to 5 K 1. Check the pre-charge pressure of the expansion vessel. 2. Charge the primary circuit with Viessmann heat transfer medium and vent. Note Ensure frost protection down to 19 °C.

  • Page 41: Filling And Venting The Solar Circuit

    Commissioning, inspection, maintenance Filling and venting the secondary side (cont.) Fig. 36 Filling and venting the solar circuit Danger Please note Overheated collector areas and overheated heat Unsuitable heat transfer media result in transfer medium can cause burns/scalding and appliance damage. equipment damage.

  • Page 42: Checking The Anode Protective Current With An Anode Tester

    Commissioning, inspection, maintenance Cleaning the DHW cylinder (cont.) Please note A short circuit between the magnesium anode and the internal indirect coil negates the protec- tive effect of the magnesium anode. This leads to corrosion damage on the DHW cylinder. Before connecting the electrical cables, check the resistance across terminals .

  • Page 43: Checking The Electrical Connections For Firm Seating

    Commissioning, inspection, maintenance Replacing the magnesium anode (cont.) Please note A short circuit between the magnesium anode and the internal indirect coil negates the protec- tive effect of the magnesium anode. This leads to corrosion damage on the DHW cylinder. Before connecting the electrical cables, check the resistance across terminals (see...
  • Page 44 Commissioning, inspection, maintenance Commissioning the system (cont.) Switch ON the ON/OFF switch on the control unit. ■ The prompt "Start commissioning?" appears auto- matically on commissioning. Note The commissioning assistant can also be started manually: To do this, press and hold when switching on the control unit (progress bar visible).
  • Page 45 Commissioning, inspection, maintenance Commissioning the system (cont.) language date/time time date Start commissioning? Coding Select level 1 parameter group parameter Temperature Display sensors sensor values Signal inputs Display signal inputs Actuator test Carry out actuator test Subscriber check (LON) Carry out subscriber check Start Functional...
  • Page 46 Commissioning, inspection, maintenance Commissioning the system (cont.) Required parameters for components connected on site Parameters may need to be set subject to the type of Detailed explanations of parameters appliance, the selected system scheme and the acces- "Vitotronic 200" service instructions sories used.
  • Page 47 Commissioning, inspection, maintenance Commissioning the system (cont.) Parameters for pumps and other components Parameter Setting Heating circuit pump "System definition" Ó "System scheme 7000" With heating circuit A1/HC1 for heat- ■ ing circuit without mixer With heating circuit M2/HC2 for ■...
  • Page 48 Commissioning, inspection, maintenance Commissioning the system (cont.) Parameters for external functions Parameter Setting External demand If applicable "Internal hydraulics" Ó "Flow temperature for external demand 730C" Set flow temperature for external de- mand External starting of the compressor; mixer in control mode or OPEN "System definition"...
  • Page 49 Commissioning, inspection, maintenance Commissioning the system (cont.) Parameters for instantaneous heating water heater Parameter Setting "Electr booster heater" Ó "Enable instantaneous heating water heater 7900" "1" "Output for instant. heating water heater at power-OFF 790A" "1" 3 kW "2" 6 kW "3"...
  • Page 50 Commissioning, inspection, maintenance Commissioning the system (cont.) Parameters for energy meters Parameter Setting "Photovoltaics" Ó "Enable own energy consumption PV 7E00" "1" ≙ "Threshold for electrical power 7E04" "0" to "300" ( 0 to 30 kW) Enable functions for utilisation of power generated on site. "Photovoltaics"...

  • Page 51: Checking The System Function

    Commissioning, inspection, maintenance Commissioning the system (cont.) Parameters for ice store system Parameter Setting "System definition" Ó "Select primary source 7030" "1" "External extension 7010" "2" "Solar" Ó "Type solar control unit 7A00" "2" Possibly set additional parameters. "System definition" Ó...

  • Page 52: Maintenance Overview Of Electrical Components

    Maintenance Overview of electrical components Type BWT 241.A (400 V~) Reset button of the high limit safety cut-out of the instantaneous heating water heater Compressor contactor Cable channel 3 rows of luster terminals Controller and sensor PCB Programming unit Main PCB Expansion PCB on the main PCB Compressor power supply Switching module with power supply for instanta-...
  • Page 53 Maintenance Overview of electrical components (cont.) Type BWT-M 241.A (230 V~) Reset button of the high limit safety cut-out of the instantaneous heating water heater Compressor contactor Cable channel 3 rows of luster terminals Controller and sensor PCB Programming unit Main PCB Expansion PCB on the main PCB Compressor power supply...

  • Page 54: Opening Programming Unit

    Maintenance Opening programming unit Fig. 43 Removing cover from programming unit, if necessary Fig. 44...

  • Page 55: Overview Of Internal Components

    Maintenance Overview of internal components Secondary circuit flow temperature sensor Cylinder temperature sensor Solar circuit return temperature sensor Primary circuit flow temperature sensor (heat pump brine inlet) Secondary circuit return temperature sensor Secondary pump Primary pump Compressor 3-way diverter valve for "central heating/DHW heating"...

  • Page 56: Dhw Cylinder Drain & Fill Valve Positions

    Maintenance DHW cylinder drain & fill valve positions Fig. 46 Closed Open to drain the internal DHW line Open to drain or fill the cylinder Draining the heat pump on the secondary side 1. Close the on-site boiler drain & fill valve. 2.

  • Page 57: Viessmann Ntc 10 K (Blue Marking)

    Maintenance Checking the sensors (cont.) Viessmann NTC 10 k (blue marking) Ω Outside temperature sensor Other sensors Temperature in °C Temperature in °C Fig. 47 Fig. 48 Viessmann NTC 20 k (orange marking) Ω Temperature in °C Fig. 49...

  • Page 58: Viessmann Pt500A (Green Marking)

    Maintenance Checking the sensors (cont.) Viessmann Pt500A (green marking) Temperature in °C Fig. 50 Checking the fuses For fuse locations, see page 23 onwards. Fuse F1 is located on the mains terminal of the heat Fuses F1 and F3: ■...

  • Page 59: Appliance Is Too Noisy

    Maintenance Appliance is too noisy Possible causes: ■ Transport bracket not removed: see page 19. ■ Casing door not closed: see page 18. ■ The secondary circuit return line touches the primary circuit return line, other lines or the compressor. Fig.

  • Page 60: Parts Lists Type Bwt 241.A Overview Of Assemblies

    Parts lists type BWT 241.A (400 V~) Overview of assemblies The following details are required when ordering parts: ■ Serial no. (see type plate ■ Assembly (from this parts list) ■ Position number of the individual part within the assembly (from this parts list) Fig.

  • Page 61: Parts Not Shown

    The following details are required when ordering parts: ■ Serial no. (see type plate in Fig. 52) ■ Position number of the part (from this parts list) Pos. Part 0006 Touch-up spray paint, white 0007 Touch-up paint stick, white 0008 Vitocal 242-G installation and service instructions...

  • Page 62: Casing

    Parts lists type BWT 241.A (400 V~) Casing 0003 0006 0005 0001 0008 0004 0007 0009 0002 0010 Fig. 53...
  • Page 63 Front panel, top 0002 Front panel, bottom 0003 Side panel, left 0004 Side panel, right 0005 Top panel, front 0006 Top panel, back 0007 Support, heat pump control unit 0008 Viessmann logo and Vitocal logo 0009 Screws (set) 0010 Fixing parts (set)

  • Page 64: Control Unit And Electrical Equipment

    Parts lists type BWT 241.A (400 V~) Control unit and electrical equipment 0014 0016 0015 0010 0001 0012 0014 0015 0017 0011 0016 0040 0017 0007 0006 0038 0039 0013 0004 0005 0041 0002 0003 0042 0032 0035 0036 0019 0018 0022 0029...
  • Page 65 Parts lists type BWT 241.A (400 V~) Control unit and electrical equipment (cont.) Pos. Part 0001 Programming unit 0002 Controller and sensor PCB with cover (CU401) 0003 Base support, controller and sensor PCB 0004 Main PCB with cover (MB761) 0005 Base support, main PCB 0006 Expansion PCB with cover (SA135)

  • Page 66: Heat Pump Module

    Parts lists type BWT 241.A (400 V~) Heat pump module 0045 0024 0003 0039 0039 0028 0039 0039 0016 0035 0023 0006 0032 0016 0034 0014 0002 0011 0036 0025 0034 0013 0017 0016 0042 0038 0014 0010 0043 0012 0018 0026 0009...
  • Page 67 Parts lists type BWT 241.A (400 V~) Heat pump module (cont.) Pos. Part 0001 Compressor 0002 Heat exchanger (evaporator) 0003 Heat exchanger (condenser) 0004 Thermal expansion valve TEV 0005 Filter dryer 0006 Safety high pressure switch 0007 Low pressure switch 0008 Thermal circuit breaker 140 °C to 120 °C 0009...

  • Page 68: Hydraulics

    Parts lists type BWT 241.A (400 V~) Hydraulics 0021 0004 0039 0034 0026 0039 0036 0041 0021 0036 0034 0034 0036 0036 0034 0025 0034 0036 0014 0037 0015 0026 0035 0010 0037 0034 0008 0036 0036 0037 0040 0034 0023 0015 0034...
  • Page 69 Parts lists type BWT 241.A (400 V~) Hydraulics (cont.) Pos. Part 0001 Back panel, lower casing 0002 Base plate 0003 Anti-vibration mount 0004 Top panel, lower casing 0005 Strut, lower casing, left 0006 Strut, lower casing, right 0007 Retaining rail 0008 Retaining bracket 0009...

  • Page 70: Cylinder

    Parts lists type BWT 241.A (400 V~) Cylinder 0005 0011 0032 0017 0012 0032 0013 0015 0021 0014 0036 0004 0032 0017 0014 0032 0032 0031 0034 0003 0029 0013 0002 0030 0035 0028 0001 0027 0032 0033 0035 0032 0018 0016 0006...
  • Page 71 Parts lists type BWT 241.A (400 V~) Cylinder (cont.) Pos. Part 0001 Loading cylinder 220 l 0002 Back panel, casing top 0003 Retaining bracket, cylinder 0004 Cold water line 0005 Connector, DHW line 0006 Connection line, check valve heating lance —...

  • Page 72: Parts Lists Type Overview Of Assemblies

    Parts lists type BWT-M 241.A (230 V~) Overview of assemblies The following details are required when ordering parts: ■ Serial no. (see type plate ■ Assembly (from this parts list) ■ Position number of the individual part within the assembly (from this parts list) Fig.

  • Page 73: Bwt-M 241.A (230 V~) ■ Parts Not Shown

    The following details are required when ordering parts: ■ Serial no. (see type plate in Fig. 58) ■ Position number of the part (from this parts list) Pos. Part 0006 Touch-up spray paint, white 0007 Touch-up paint stick, white 0008 Vitocal 242-G installation and service instructions...

  • Page 74: Casing

    Parts lists type BWT-M 241.A (230 V~) Casing 0011 0006 0003 0005 0001 0008 0004 0007 0009 0002 0010 Fig. 59...
  • Page 75 Front panel, bottom 0003 Side panel, left 0004 Side panel, right 0005 Top panel, front 0006 Top panel, back 0007 Support, heat pump control unit 0008 Viessmann logo and Vitocal logo 0009 Screws (set) 0010 Fixing parts (set) 0011 Top panel, front...

  • Page 76: Control Unit And Electrical Equipment

    Parts lists type BWT-M 241.A (230 V~) Control unit and electrical equipment 0014 0016 0015 0012 0001 0014 0010 0040 0015 0016 0017 0006 0017 0007 0039 0011 0038 0013 0004 0005 0002 0003 0041 0019 0042 0032 0029 0035 0018 0036 0027...
  • Page 77 Parts lists type BWT-M 241.A (230 V~) Control unit and electrical equipment (cont.) Pos. Part 0001 Programming unit 0002 Controller and sensor PCB with cover (CU401) 0003 Base support, controller and sensor PCB 0004 Main PCB with cover (MB761) 0005 Base support, main PCB 0006 Expansion PCB with cover (SA135)
  • Page 78 Parts lists type BWT-M 241.A (230 V~) Control unit and electrical equipment (cont.) Parts not shown Pos. Part 0069 Return temperature sensor, solar circuit NTC 10 k Ω...
  • Page 79 Parts lists type BWT-M 241.A (230 V~) Control unit and electrical equipment (cont.)

  • Page 80: Heat Pump Module

    Parts lists type BWT-M 241.A (230 V~) Heat pump module 0045 0024 0003 0039 0039 0028 0039 0039 0016 0035 0023 0006 0032 0016 0034 0014 0002 0011 0036 0025 0034 0013 0017 0016 0042 0038 0014 0010 0043 0012 0018 0026 0009...
  • Page 81 Parts lists type BWT-M 241.A (230 V~) Heat pump module (cont.) Pos. Part 0001 Compressor 0002 Heat exchanger (evaporator) 0003 Heat exchanger (condenser) 0004 Thermal expansion valve TEV 0005 Filter dryer 0006 Safety high pressure switch 0007 Low pressure switch 0008 Thermal circuit breaker 140 °C to 120 °C 0009...

  • Page 82: Hydraulics

    Parts lists type BWT-M 241.A (230 V~) Hydraulics 0021 0004 0039 0034 0026 0039 0036 0041 0021 0036 0034 0034 0036 0036 0034 0025 0034 0036 0014 0037 0015 0026 0035 0010 0037 0034 0008 0036 0036 0037 0040 0034 0023 0015 0034...
  • Page 83 Parts lists type BWT-M 241.A (230 V~) Hydraulics (cont.) Pos. Part 0001 Back panel, lower casing 0002 Base plate 0003 Anti-vibration mount 0004 Top panel, lower casing 0005 Strut, lower casing, left 0006 Strut, lower casing, right 0007 Retaining rail 0008 Retaining bracket 0009...

  • Page 84: Cylinder

    Parts lists type BWT-M 241.A (230 V~) Cylinder 0005 0011 0032 0017 0012 0032 0013 0015 0021 0014 0036 0004 0032 0017 0014 0032 0032 0031 0034 0003 0029 0013 0002 0030 0035 0028 0001 0027 0032 0033 0035 0032 0018 0016 0006...
  • Page 85 Parts lists type BWT-M 241.A (230 V~) Cylinder (cont.) Pos. Part 0001 Loading cylinder 220 l 0002 Back panel, casing top 0003 Retaining bracket, cylinder 0004 Cold water line 0005 Connector, DHW line 0006 Connection line, check valve heating lance —...

  • Page 86: Mounting Set

    Parts lists type BWT-M 241.A (230 V~) Mounting set 0004 0005 0006 0001 0002 0003 0003 0002 Fig. 64...
  • Page 87 Parts lists type BWT-M 241.A (230 V~) Mounting set (cont.) Pos. Part 0001 Flange for magnesium anode 0002 Magnesium anode 0003 Flange gasket 0004 Safety valve 0005 Extension R x 30 mm ½ 0006 Flange insulation...

  • Page 88: Commissioning/Service Hydraulic Parameters Report

    Commissioning/service reports Hydraulic parameters report Setting and test values Setpoint Commissioning Maintenance/ Service Frost protection (brine medium) °C – Testing the external heating circuit pumps Circulation pump type Circulation pump stage Overflow valve setting Commissioning, primary circuit Primary circuit flow temperature °C ("Diagnosis"...
  • Page 89 Commissioning/service reports Control parameter report (cont.) Parameter Code Delivered condition Commission- Maintenance/ service "Operating status for external change- 7012 over" "Duration of external changeover" 7013 "Effect of external demand on heat 7014 pump/heating circuits" "Effect of ext. blocking on heat pump/ 7015 heating circuits"...
  • Page 90 Commissioning/service reports Control parameter report (cont.) Parameter Code Delivered condition Commission- Maintenance/ service ≙ "Set DHW temperature" 6000 500 ( 50 °C) ≙ "Min. DHW temperature" 6005 100 ( 10 °C) ≙ "Max. DHW temperature" 6006 600 ( 60 °C) ≙...
  • Page 91 Commissioning/service reports Control parameter report (cont.) Internal hydraulics Parameter Code Delivered condition Commission- Maintenance/ service "Heat pump for drying a building" 7300 "Time program for screed drying" 7303 ≙ "Set flow temperature for external de- 730C 500 ( 50 °C) mand"...
  • Page 92 Commissioning/service reports Control parameter report (cont.) Cooling Parameter Code Delivered condition Commission- Maintenance/ Service "Cooling function" 7100 "Cooling circuit" 7101 ≙ "Set room temperature separate cooling 7102 200 ( 20 °C) circuit" ≙ "Min. flow temperature cooling" 7103 100 ( 10 °C) "Influence room temperature hook-up 7104...
  • Page 93 Commissioning/service reports Control parameter report (cont.) Photovoltaics Parameter Code Delivered condition Commission- Maintenance/ service "Enable own energy consumption PV" 7E00 ≙ "Prop. of external current" 7E02 10 ( 10 %) ≙ "Threshold for electrical power" 7E04 0 W) "Enable own energy consumptn for set 7E10 DHW temperature 2"...
  • Page 94 Commissioning/service reports Control parameter report (cont.) Communication Parameter Code Delivered condition Commission- Maintenance/ service "Enable LON communication module" 7710 "LON subscriber number" 7777 "LON fault manager" 7779 "LON system number" 7798 "Interval for data transfer via LON" 779C 20 min "Source outside temperature"...

  • Page 95: Specification

    Specification Specification 400 V appliances Type BWT 241.A06 241.A08 241.A10 Output data, heating to EN 14511 (B0/W35, 5 K spread) Rated heating output 10.0 Cooling capacity Power consumption 1.40 1.87 2.35 Coefficient of performance (COP) ε Output data, heating with reference to EN 255 (B0/W35, 10 K spread) Rated heating output 10.4...
  • Page 96 Specification Specification (cont.) Type BWT 241.A06 241.A08 241.A10 Power consumption Primary pump (high efficiency circulation pump) W 4 to 72 ■ Secondary pump (high efficiency circulation 6 to 87 ■ pump) Cylinder loading pump PWM 31 to 88 ■ Max. power consumption, control unit 1000 1000 1000...
  • Page 97 Specification Specification (cont.) Type BWT 241.A06 241.A08 241.A10 Sound power at rated heating output (measurements with reference to EN 12102/ EN ISO 9614-2) Weighted total sound power level dB(A) At B0 ± K/W35 ± ■ 230 V appliances Type BWT-M 241.A06 241.A08 241.A10...
  • Page 98 Specification Specification (cont.) Type BWT-M 241.A06 241.A08 241.A10 Electrical values, heat pump Rated voltage, compressor 1/N/PE 230 V/50 Hz Rated current, compressor 16.0 17.1 23.0 Starting current, compressor 45.0 45.0 45.0 Starting current, compressor (with stalled arma- 58.0 67.0 98.0 ture) MCB/fuse protection for compressor 1 x B16A...
  • Page 99 Specification Specification (cont.) Type BWT-M 241.A06 241.A08 241.A10 Permiss. operating pressure Primary circuit (brine) Secondary circuit, heating water Secondary circuit, DHW 10.0 10.0 10.0 Solar circuit Connections Primary circuit flow/return Cu 28 x 1 Cu 28 x 1 Cu 28 x 1 Secondary circuit flow/return Cu 28 x 1 Cu 28 x 1...

  • Page 100: Appendix Heat Pump Commissioning Request

    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 101: Declaration Of Conformity Declaration Of Conformity

    Vitocal 242-G, type BWT/BWT-M 241.A including heat pump control unit Vitotronic 200, type WO1C We, Viessmann Werke GmbH & Co. KG, D-35107 Allendorf, declare as sole responsible body that the named product complies with the provisions of the following directives and regulations:...

  • Page 102: Keyword Index

    Keyword index Keyword index Connection values Air vent valve – Circulation pumps........... 26 – Primary circuit............55 – Components............26 Ambient temperatures..........10 – DHW circulation pump..........25 Anode protective current..........42 – Heating circuit pump..........24 Anode tester...............42 – Solar circuit pump........... 25 Appliance fuses............58 Contact humidistat..........
  • Page 103 Keyword index Keyword index (cont.) Electricity meter............28 – Economy tariff........... 32, 33 Ice store system............51 – Premium tariff............32, 33 Impressed current anode........... 42 Energy meters............50 Inspection..............39 Entry grommets..........18, 19, 20 Installation room............9 Expansion PCB........26, 52, 53, 65, 77 Installation room requirements........10 Expansion vessel............
  • Page 104 Keyword index Keyword index (cont.) Overview Power supply............29, 35 – Electrical connections..........52 – Compressor...........30, 31, 52, 53 – Internal components..........55 – Heating water heat pump control unit..... 27 – Pumps..............55 – Heat pump control unit........ 30, 32, 33 –...
  • Page 105 Keyword index Keyword index (cont.) Secondary circuit – Connecting.............. 20 Temperature differential, primary circuit..... 40 – Draining..............56 Temperature limiter............ 25 – Filling and venting........... 40 Temperature sensor Secondary pump..........52, 53, 55 – Curve, type NTC 10 k ........... 57 Ω...
  • Page 108 Applicability Serial No.: 7549173 7549174 7549175 7549176 7549177 7549178 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...

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