Viessmann VITOCAL 222-G Interconnection And Wiring Manual
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Also See for VITOCAL 222-G:
- User manual (236 pages) ,
- Installation and service instructions manual (132 pages) ,
- Technical manual (92 pages)
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Summary of Contents for Viessmann VITOCAL 222-G
- Page 1 VIESMANN Connection and wiring diagram for contractors Vitocal 222-G Type BWT-M 221.B06 to B10 Heat pump compact appliance with integral DHW cylinder, 230 V~ VITOCAL 222-G Please keep safe. 6170481 GB 1/2021...
- Page 2 Safety instructions Safety instructions Please follow these safety instruc- tions closely to prevent accidents and material losses. Safety instructions explained Danger Note This symbol warns against the risk Details identified by the word "Note" of injury. contain additional information. Please note This symbol warns against the risk of material losses and environmen- tal pollution.
- Page 3 Safety instructions Safety instructions (cont.) Safety instructions for working on the system Working on the system Please note Electronic assemblies can be dam- Isolate the system from the power sup- ■ aged by electrostatic discharge. ply, e.g. by removing the separate fuse Prior to commencing work, touch or by means of a mains isolator, and earthed objects such as heating or...
- Page 4 Further measures before starting work Replace faulty components only on the refrigerant circuit with flammable with genuine Viessmann spare refrigerants (R32): parts. Remove all flammable materials and ■ Auxiliary components, spare and...
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Page 5: Table Of Contents
Index Index Notes Notes ..................... Electrical equipment ................Connection and wiring dia- Sheet 1a: Compressor 230 V~ .............. gram Sheet 2a: Heat pump control unit power supply 230 V~ ....... Sheet 3: EEV PCB (refrigerant circuit controller [4-7]) ......Sheet 4: Main PCB ................10 Sheet 5: Expansion PCB ............... -
Page 6: Notes Notes
Notes Notes Observe the information on electrical connections in ■ the installation and service instructions. ■ In the case of a power supply with power-OFF facility, the power to the control circuit (heat pump control unit) must be supplied without interruption by the power supply utility. -
Page 7: Connection And Wiring Dia-Sheet 1A: Compressor 230 V
Connection and wiring diagram Sheet 1a: Compressor 230 V~ 2a.6 Fig. 1 Compressor power supply Relay, control circuit of full wave soft starter Mains terminals, compressor Full wave soft starter Compressor contactor Run capacitor Thermal relay, compressor Male jack, compressor Fuse, control circuit of full wave soft starter Compressor motor... -
Page 8: Gram Sheet 2A: Heat Pump Control Unit Power Supply 230 V
Connection and wiring diagram Sheet 2a: Heat pump control unit power supply 230 V~ Fig. 2 Mains terminals, heat pump control unit External blocking Heat pump control unit fuse 6.3 A (slow) Jumper Heat pump control unit ON/OFF switch Relay, control circuit of full wave soft starter Primary circuit flow switch Plug, safety chain Primary circuit pressure switch and/or frost stat... -
Page 9: Sheet 3: Eev Pcb (Refrigerant Circuit Controller [4-7])
Connection and wiring diagram Sheet 3: EEV PCB (refrigerant circuit controller [4-7]) PWM in PWM out +8.2 V PWM out +8.2 V GND1 6.3 -B- /6.3 -A+/6.3 Fig. 3 Never connect anything here. Liquid gas temperature sensor (NTC 10 k Ω... -
Page 10: Sheet 4: Main Pcb
Connection and wiring diagram Sheet 3: EEV PCB (refrigerant circuit… (cont.) Primary pump Compressor relay (230 V~) Secondary pump Enable compressor switching Sheet 4: Main PCB Fig. 4 External demand Safety high pressure switch External blocking Primary circuit flow switch Power-OFF Thermal relay Phase monitor (if installed) or jumper... -
Page 11: Sheet 5: Expansion Pcb
Connection and wiring diagram Sheet 4: Main PCB (cont.) Output relay for instantaneous heating water heater, stage 2 Output relay for instantaneous heating water heater, stage 1 Sheet 5: Expansion PCB Fig. 5 Ribbon cable to the controller and sensor PCB Output relay for instantaneous heating water heater, stage 2... -
Page 12: Sheet 6: Controller And Sensor Pcb
Connection and wiring diagram Sheet 6: Controller and sensor PCB Fig. 6 Ribbon cable to the main PCB and expansion PCB Top cylinder temperature sensor Ribbon cable to the programming unit Modbus: Connecting cable to EEV PCB Coding card Primary circuit return temperature sensor (heat pump brine outlet) -
Page 13: Sheet 7B: Instantaneous Heating Water Heater
Connection and wiring diagram Sheet 7b: Instantaneous heating water heater Fig. 7 Instantaneous heating water heater power supply Output relay for instantaneous heating water Mains terminals, instantaneous heating water heater, stage 2 heater High limit safety cut-out for instantaneous heating Output relay for instantaneous heating water water heater heater, stage 1... -
Page 14: Overview Of Internal Components
Connection and wiring diagram Overview of internal components Fig. 8 Air vent valve, secondary circuit 3-way diverter valve "central heating/DHW heat- Drain & fill valve, DHW cylinder ing" Air vent valve, secondary circuit Instantaneous heating water heater Air vent valves, primary circuit Compressor Air vent valve, condenser on secondary side Secondary pump... - Page 15 Connection and wiring diagram Overview of internal components (cont.) High limit safety cut-out for instantaneous heating F6 Cylinder temperature sensor (Viessmann water heater NTC 10 k Ω Drain & fill valve, primary circuit T1 Secondary circuit flow temperature sensor Electronic expansion valve (NTC 10 k Ω...
- Page 16 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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