Viessmann VITOCAL 222-S Installation And Service Instructions Manual
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Viessmann VITOCAL 222-S Installation And Service Instructions Manual

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VIESMANN
Installation and service instructions
for contractors
Vitocal 222-S
Type AWT 221.A04 to A13, 221.B10 to B16
Compact heat pumps, split version for heating mode
Type AWT-AC 221.A04 to A13, 221.B10 to B16
Compact heat pumps, split version for heating and cooling operation
For applicability, see the last page
VITOCAL 222-S
Please keep safe.
5700 562 GB
7/2015

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Summary of Contents for Viessmann VITOCAL 222-S

  • Page 1 VIESMANN Installation and service instructions for contractors Vitocal 222-S Type AWT 221.A04 to A13, 221.B10 to B16 Compact heat pumps, split version for heating mode Type AWT-AC 221.A04 to A13, 221.B10 to B16 Compact heat pumps, split version for heating and cooling operation...
  • Page 2 ■ installer or a qualified person authorised by the For replacement, use only spare parts supplied installer. or approved by Viessmann. Regulations to be observed National installation regulations ■ Statutory regulations for the prevention of accidents ■...

  • Page 3: Table Of Contents

    Index Index 1. Information Disposal of packaging ................Symbols ....................Intended use ..................Product information ................2. Preparing for installation Requirements regarding on-site connections ........Recommended power cables ............. ■ 3. Installation sequence Installing the external unit ..............10 Installation information ................ 10 ■...
  • Page 4 Draining secondary side heat pump ............73 Checking the sensors ................73 Internal unit: Viessmann NTC 10 k (marked blue) ......73 Ω ■ Internal unit: Viessmann Pt500A (green ID label) ....... 74 ■ External unit: NTC 10 k (without ID) ..........74 Ω ■...

  • Page 5: Symbols

    Please dispose of packaging waste in line with statu- DE: Use the disposal system organised by tory regulations. Viessmann. AT: Use the ARA statutory disposal system (Altstoff Recycling Austria AG, licence number 5766). CH: Packaging waste is disposed of by the HVAC contractor.

  • Page 6: Product Information

    Product information Design Heat pump control unit Vitocal 222-S is a split air/water heat pump, comprising The entire heating system is monitored and controlled 1 internal unit with integral DHW cylinder and 1 exter- by the integral heat pump control unit Vitotronic 200, nal unit.
  • Page 7 Preparing for installation Requirements regarding on-site connections Internal unit Fig. 1 Opening for LV leads < 42 V Liquid line Hot gas line DHW circulation Heating water flow Opening for 230 V cables Heating water return Cold water Connection sizes for hydraulic connections Pos.

  • Page 8: Recommended Power Cables

    Preparing for installation Requirements regarding on-site connections (cont.) Pos. Sym- Meaning Connection to the internal unit Liquid line Type AWT/AWT-AC Pipe UNF thread 221.A04 6 mm ⅝ (Reducer x ⁷⁄₁₆ supplied) ⅝ 221.A05 to A13 10 mm ⅝ 221.B10 to B16 10 mm ⅝...
  • Page 9 Preparing for installation Requirements regarding on-site connections (cont.) External unit 230 V~ Type AWT/AWT-AC 221.A04 221.A05 221.A07 221.A10 221.A13 Compressor Cable cross-section 3 x 2.5 mm 3 x 2.5 mm 3 x 2.5 mm 3 x 2.5 mm 3 x 4.0 mm Max.

  • Page 10: Installation Sequence Installing The External Unit

    Installation sequence Installing the external unit Installation information Types of installation: Condensate: Floorstanding installation with line entry above Ensure the condensate can drain freely, and create a ■ ■ ground level permanent gravel bed below the external unit as a ■...

  • Page 11: Installation Site

    Installation sequence Installing the external unit (cont.) Installation site Select a site with good air circulation, so that the Take into account the lengths of the refrigerant lines: ■ ■ cooled air can dissipate and be replaced by warm See "Connecting refrigerant lines". air.

  • Page 12: Transport And Installation

    Installation sequence Installing the external unit (cont.) Type AWT/AWT-AC Dimensions in mm Line entry above ground below ground level level 221.A04 1000 ≥ ≥ ≥ ≥ ≥ 221.A05 1000 ≥ ≥ ≥ ≥ ≥ 221.A07 1000 ≥ ≥ ≥ ≥ ≥...

  • Page 13: Floorstanding Installation

    Installation sequence Installing the external unit (cont.) Floorstanding installation Fig. 3 Fig. 4 Support for floorstanding installation (accessories) Note We recommend letting condensate drain away freely Gravel bed as condensate soakaway Concrete foundations (see technical guide) (without condensate pipe). KG conduit DN 100 (only with entries below ground level) Rubber mounts (supplied) Wall mounting...

  • Page 14: Installation Room Requirements

    Installation sequence Installing the internal unit (cont.) Please note Impacts, compression and tensile loads can cause damage to the outside panels of the appliance. Never apply loads/weight to the top, front or side panels of the appliance. Installation room requirements Please note Minimum room volume (to EN 378): Unfavourable ambient conditions can lead to...

  • Page 15: Minimum Clearances

    Installation sequence Installing the internal unit (cont.) Minimum clearances Minimum room height h Installation h in mm Without connection set for pre-instal- 2000 ■ lation/DHW (accessories) With connection set for pre-installa- 2100 ■ tion/DHW (accessories) Observe engineering information. Technical guides for heat pumps Fig.

  • Page 16: Removing The Cylinder Module

    Installation sequence Installing the internal unit (cont.) Removing the cylinder module Fig. 6...
  • Page 17 Installation sequence Installing the internal unit (cont.) 193B P501 P303 P302 P301 Fig. 7 Fig. 8...
  • Page 18 Installation sequence Installing the internal unit (cont.) Fig. 9...
  • Page 19 Installation sequence Installing the internal unit (cont.) Fig. 10...

  • Page 20: Assembly And Sealing Faces To Bear In Mind

    Installation sequence Installing the internal unit (cont.) Fig. 11 Note Do not damage sealing tape when removing the cylinder module. Assembly and sealing faces to bear in mind Please note Leaking hydraulic connections lead to appli- ance damage. Ensure the diaphragm grommets at the pipe entries are seated correctly.
  • Page 21 Installation sequence Installing the internal unit (cont.) 2. Fit the cylinder module in reverse order to that described under "Removing the cylinder module": See page 16. Please note Leaking hydraulic connections lead to appli- ance damage. Make watertight hydraulic connections ■...

  • Page 22: Connecting Refrigerant Lines

    Installation sequence Connecting refrigerant lines The external unit is pre-charged with refrigerant ■ R410A. ■ In the following cases, fit oil lift bends in the rising pipe: – In heating mode, if the internal unit is installed higher than the external unit: See diagram below. In cooling mode, if the internal unit is installed –...

  • Page 23: Sound And Vibration Isolation When Line Entry Is Above Ground Level

    Installation sequence Connecting refrigerant lines (cont.) Sound and vibration isolation when line entry is above ground level Note Route connecting cables and refrigerant lines sepa- rately. Fig. 16 Note Line entry, e.g. KG conduit with thermal insulation Only for 230 Vappliances Cables/leads between internal and external units Pipe bends for compensating vibrations Tube clips with EPDM inserts...

  • Page 24: Connection To The External Unit

    Installation sequence Connecting refrigerant lines (cont.) Connection to the external unit Fig. 17 Example type AWT/AWT-AC 221.A04 Liquid line Hot gas line 1. Undo the side cover: See page 39. 3. Flare the pipe ends. Please note 4. Secure the pipes. Contamination (e.g.

  • Page 25: Connection To The Internal Unit

    Installation sequence Connecting refrigerant lines (cont.) Tighten nuts with the following torque: Type AWT/AWT-AC Line Connection to ex- Torque in Nm ternal unit ⁷⁄₁₆ UNF 221.A04 Liquid line 6 mm 14 to 18 Hot gas line 12 mm 50 to 62 ¾...
  • Page 26 Installation sequence Connecting refrigerant lines (cont.) 1. Undo nuts from refrigerant connections and slide onto the supplied pipe bends. 2. Flare the pipe ends of the supplied pipe bends on the short side. Note Flare the pipe end of the hot gas line by approx.
  • Page 27 Installation sequence Connecting refrigerant lines (cont.) 5. Flare the pipe bends on their open end and secure connection piece (twin connector) with union nuts. Note ■ Flare the pipe end of the hot gas line by approx. 0.5 mm. Connection pieces must not be skewed. Check ■...

  • Page 28: Connecting The Secondary Circuit

    Installation sequence Connecting refrigerant lines (cont.) Type AWT/AWT-AC Line Connection to in- Torque in Nm ternal unit 221.A07 Liquid line 10 mm 33 to 42 ⅝ Hot gas line 16 mm 63 to 77 ⅞ 221.A10 Liquid line 10 mm 33 to 42 ⅝...
  • Page 29 Installation sequence Connecting the secondary circuit (cont.) 2. Install the safety assembly provided: Either to an Symbol Meaning Connection on-site line in the heating water return or to the sec- Heating water return Cu 28 x 1 mm ondary circuit connection set (accessories) Heating water flow Cu 28 x 1 mm Connection set installation instructions...

  • Page 30: Connecting The Dhw Side

    Installation sequence Connecting the DHW side For connecting the DHW side, observe DIN 1988 and DIN 4753 (CH: SVGW regulations). P R H M O Fig. 24 Flow regulating valve DHW circulation pump Pressure gauge connection Spring-loaded check valve Non-return valve/pipe separator Heat pump terminal area (plan view) Drain valve Expansion vessel, suitable for drinking water...

  • Page 31: Electrical Connection

    Installation sequence Electrical connection Danger Danger Damaged wiring insulation wiring can lead to In terms of safety, the BUS cables for the inter- serious injury from electrical current and result in nal/external units (12 V or 43 V) do not count as appliance damage.

  • Page 32: Internal Unit: Routing The Cables To The Wiring Chamber

    Installation sequence Electrical connection (cont.) Internal unit: Routing the cables to the wiring chamber 400/230 V > 42 V < 42 V Fig. 25 Power cables to switching module for instantane- Type AWT/AWT-AC 221.A04 to A07: ous heating water heater 230 V~/400 V~ BUS cable 43 V: Routing in the 230 V~ voltage Connecting cables for 230 V~ components area (connection, see page 40)

  • Page 33: Internal Unit: Overview Of Connections

    Installation sequence Electrical connection (cont.) Internal unit: Overview of connections 12 V P202 P203 43 V F101 Fig. 26 Expansion PCB on main PCB: Make no on-site Switching module and power supply for instanta- connections. neous heating water heater: See page 43. Main PCB: See page 34.

  • Page 34: Internal Unit: Main Pcb (230 V~ Components)

    Installation sequence Electrical connection (cont.) Internal unit: Main PCB (230 V~ components) Information regarding the connection values Set the required parameters during commissioning: The specified output is the recommended connected See from page 58. ■ load. ■ The total output of all components connected directly to the heat pump control unit (e.g.
  • Page 35 Installation sequence Electrical connection (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 3-way diverter valve for heating water Connection values buffer cylinder bypass or heat pump Output: 130 W ■...

  • Page 36: Internal Unit: Expansion Pcb On Main Pcb (230 V~ Components)

    Installation sequence Electrical connection (cont.) Internal unit: Expansion PCB on main PCB (230 V~ components) Make no on-site connections. Internal unit: Luster terminals (signal and safety connections) Set the required parameters during commissioning: See from page 58. Terminals Function Explanation X3.1 Switched phase Via control unit ON/OFF switch...

  • Page 37: Internal Unit: Controller And Sensor Pcb (Lv Connections)

    Installation sequence Electrical connection (cont.) Terminals Function Explanation X3.8 Frost stat and/or contact humidistat, Requires floating N/C contact: X3.9 cooling Closed: Continuous safety chain ■ Open: Safety chain interrupted; heat pump shut down ■ Jumper Breaking capacity 230 V~, 0.15 A ■...

  • Page 38: Internal Unit: Avi Pcb

    — 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 39: External Unit: Overview Of Connections

    Installation sequence Electrical connection (cont.) Plug Component F101 Fuse 1.0 A (slow L) P202 BUS connection (12 V to external unit for type AWT/AWT-AC 221.A10/A13, 221.B10 to B16) P203 BUS connection (43 V to external unit for type AWT/AWT-AC 221.A04 to A07) Note Only one BUS connection should be connected.

  • Page 40: Connecting Internal And External Units

    Installation sequence Electrical connection (cont.) Connecting internal and external units Type AWT/AWT-AC 221.A04 221.A05/A07 221.A10/A13 221.B10/B13/B16 230 V~ 230 V~ 230 V~ 400 V~ C N L ? C2 C1 ? N L C2 C1 ? N L3 L2L1 12VCOM COM43V Fig.

  • Page 41: Heat Pump Control Unit Power Supply 230 V

    Installation sequence Power supply (cont.) The assignment of the power-OFF (for compressor Protect the power cable to the heat pump control unit ■ ■ and/or instantaneous heating water heater) is made with an MCB/fuse of max. 16 A. via the type of connection and by setting parameters ■...
  • Page 42 Installation sequence Power supply (cont.) External unit power supply 230 V~ Type AWT/AWT-AC 221.A04 221.A05/A07 221.A10/A13 C N L ? C2 C1 ? N L ? N L1 ? N L1 Fig. 40 Fig. 39 Fig. 41 Wiring chamber, external unit: See page 39. Power supply 230 V/50 Hz Type AWT/AWT-AC 221.A04...

  • Page 43: Connecting Instantaneous Heating Water Heater Power Supply

    Installation sequence Power supply (cont.) Connecting instantaneous heating water heater power supply Internal unit Recommended power cable: ■ 1/N/PE 400 V~: 5 x 2.5 mm 230 V/50 Hz 230 V~: 7 x 2.5 mm ■ Fuse rating max. 16 A Economy tariff and power-OFF can be used ■...

  • Page 44: 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. 44 Diagram excluding MCB/fuses and RCD Heat pump control unit (internal unit, luster termi- nals, see chapter "Internal unit: Overview of con- nections") Instantaneous heating water heater Heat pump compressor (external unit) Heat pump control unit power supply: See chapter "Heat pump control unit power supply 230 V~".
  • Page 45 Installation sequence Power supply (cont.) X3.7 X3.6 X3.18/X2.1/X1.1 5 (400 V~) (230 V~) ≈ Fig. 45 Diagram excluding fuses and RCDs Heat pump control unit (internal unit, luster termi- nals, see chapter "Internal unit: Overview of con- nections") Instantaneous heating water heater (if installed) Heat pump compressor (external unit) Heat pump control unit power supply: See chapter "Heat pump control unit power supply 230 V~".

  • Page 46: 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. 46 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 47: Closing The Heat Pump

    Installation sequence Power supply (cont.) [{{] 0-10V Fig. 47 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 48 Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance Commissioning steps Inspection steps Maintenance steps Page • • • 1. Opening the heat pump..................... 49 • 2. Compiling reports......................49 • 3. Purging the refrigerant lines and the internal unit............49 •...

  • Page 49: 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. Some compo- can lead to appliance damage. nents on PCBs remain 'live' even after the Wait at least 30 min between installing and power supply has been switched off.

  • Page 50: Evacuating The Refrigerant Lines And Internal Unit

    Commissioning, inspection, maintenance Evacuating the refrigerant lines and internal unit Please note Please note Commissioning is weather-dependent. At out- Escaping refrigerant will cause environmental side temperatures below 0 °C, moisture can pollution. condense and sublimate in the refrigerant lines. ■ Before evacuating the refrigerant lines and the If water droplets and/or ice particles enter the internal unit, check all connections for tight-...

  • Page 51: Charging The Refrigerant Lines And Internal Unit

    Commissioning, inspection, maintenance Evacuating the refrigerant lines and internal… (cont.) Shut-off valve Vacuum pump Liquid line Connection hose between pressure gauge set and Fill hose between pressure gauge set and external vacuum gauge unit Valve for vacuum gauge Pressure gauge set Vacuum gauge Connection hose between pressure gauge set and vacuum pump...

  • Page 52: Checking The Refrigerant Circuit For Tightness

    Commissioning, inspection, maintenance Charging the refrigerant lines and internal unit (cont.) Line lengths 12 to 30 m: 6. Fit the union nut with copper cap to the service valve of the external unit: Torque 15 to 20 Nm. 1. Connect hose between pressure gauge set and refrigerant bottle.
  • Page 53 Commissioning, inspection, maintenance Filling and venting the secondary side (cont.) Please note Escaping liquids can lead to electrical defects. Protect electrical components of the heat pump from escaping liquids. 1. Open any non-return valves installed on site. 2. Check the pre-charge pressure of the expansion vessel.

  • Page 54: Checking Expansion Vessel And Heating Circuit Pressure

    Commissioning, inspection, maintenance Filling and venting the secondary side (cont.) Opening the air vent valve for DHW heating Fig. 50 Checking expansion vessel and heating circuit pressure Observe engineering information. Technical guides for heat pumps Cleaning the DHW cylinder Danger Please note Uncontrolled escape of DHW or heat transfer Cleaning agents containing hydrochloric acid...

  • Page 55: Measuring The Anode Earth 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 56: Checking Electrical Connections Of The Internal Unit 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 57: Checking Thermal Insulation Of Flared Connections

    Commissioning, inspection, maintenance Checking thermal insulation of flared connections Checking electrical connections of the external unit for firm seating Danger Contact with 'live' components can lead to seri- ous injury from electric current. Some compo- nents on PCBs remain 'live' even after the power supply has been switched off.

  • Page 58: Commissioning The System

    Commissioning, inspection, maintenance Commissioning the system Commissioning (configuration, parameter settings and Note function check) can be carried out with or without the The type and extent of the parameters depend on the commissioning wizard (see following chapter and serv- appliance type, on the selected system scheme and ice instructions for the heat pump control unit).
  • Page 59 Commissioning, inspection, maintenance Commissioning the system (cont.) Setting Language Date/Time Time Date setting setting setting Start commissioning? Coding Parameter group Parameters level 1 select setting Temperature Sensor values sensors display Signal inputs Signal inputs display Actuator test Actuator test carry out Subscriber check (LON) Subscriber check carry out...
  • Page 60 Commissioning, inspection, maintenance Commissioning the system (cont.) Required heat pump parameters "Output compressor stage 5030" During commissioning, the heating output of the heat pump must be set subject to type. Type AWT/AWT-AC 221.A04 221.A05 221.A07 221.A10 221.A13 221.B16 221.B10 221.B13 "Output compressor 4 kW 5 kW...
  • Page 61 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 62 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 63 Commissioning, inspection, maintenance Commissioning the system (cont.) Parameters for swimming pool water heating Parameter Setting "System definition" Ó "External extension 7010" "1" or "3" "Swimming pool 7008" "1" Parameters for ventilation Parameters Setting "Ventilation" Ó "Vitovent enable 7D00" "1" Vitovent 300-F "2"...

  • Page 64: Ticking The Heat Pump Type

    Commissioning, inspection, maintenance Commissioning the system (cont.) Parameters Setting Specify the temperature differential to the selected set value for the chosen function. "Photovoltaics" Ó ≙ "Raise set DHW cylinder temperature PV 7E21" "0" to "500" ( 0 to 50 K) ≙...

  • Page 65: Instructing The System User

    Commissioning, inspection, maintenance Checking the system function (cont.) Fig. 54 Reset button Instructing the system user The system installer should hand the operating instruc- tions to the system user and instruct the user in oper- ating the system. This also includes all components added as accessories, such as remote controls.

  • Page 66: Maintenance Overview Of Electrical Components

    Maintenance Overview of electrical components See from page 33. Opening programming unit Fig. 55...
  • Page 67 Maintenance Opening programming unit (cont.) Removing cover from programming unit, if necessary Fig. 56...

  • Page 68: Overview Of Internal Components: Internal Unit

    Maintenance Overview of internal components: Internal unit a:C] Fig. 57 Flow temperature sensor, secondary circuit Instantaneous heating water heater with high (alternative positions) limit safety cut-out Cylinder temperature sensor Drain & fill valve, secondary circuit Secondary circuit return temperature sensor Service valve, internal unit: Schrader valve, Secondary pump can be used in place of the external unit serv-...

  • Page 69: Dhw Cylinder Drain & Fill Valve Positions

    Maintenance Overview of internal components: Internal unit (cont.) Secondary circuit air vent valve Pressure sensor (ICT) for determining conden- sation temperature in condenser DHW cylinder drain & fill valve positions Fig. 58 Closed Open to drain the internal DHW line Open to drain or fill the cylinder Overview of internal components: External unit Danger...
  • Page 70 Maintenance Overview of internal components: External unit (cont.) External unit 4 kW, type AWT/AWT-AC 221.A04 Fig. 59 Compressor head temperature sensor (CTT) Heat exchanger (evaporator) Electronic expansion valve (EEV) Temperature sensor, air intake, evaporator (OAT) Temperature sensor, refrigerant inlet, evaporator Evaporator temperature sensor (OMT) (OCT) 4-way diverter valve...
  • Page 71 Maintenance Overview of internal components: External unit (cont.) External unit 5 to 7 kW, type AWT/AWT-AC 221.A05/A07 Fig. 60 Compressor head temperature sensor (CTT) Heat exchanger (evaporator) High pressure switch (pHi) Temperature sensor, air intake, evaporator (OAT) Liquid separator Evaporator temperature sensor (OMT) Temperature sensor, refrigerant inlet, evaporator 4-way diverter valve (OCT)
  • Page 72 Maintenance Overview of internal components: External unit (cont.) External unit 10 to 16 kW, type AWT/AWT-AC 221.A10/A13, 221.B10 to B16 Fig. 61 4-way diverter valve Heat exchanger (evaporator) Electronic expansion valve (EEV) Temperature sensor, air intake, evaporator (OAT) Liquid separator Evaporator temperature sensor (OMT) High pressure switch (pHi) Temperature sensor, refrigerant inlet, evaporator...
  • Page 73 External unit (see Refrigerant circuit con- ■ Ω gas) (CTT) page 69) troller (observe label on the external unit) Internal unit: Viessmann NTC 10 k (marked blue) Ω Outside temperature sensor Other sensors Temperature in °C Temperature in °C Fig. 62...
  • Page 74 Maintenance Checking the sensors (cont.) Internal unit: Viessmann Pt500A (green ID label) Temperature in °C Fig. 64 External unit: NTC 10 k (without ID) Ω 1000 Temperature in °C Fig. 65...
  • Page 75 Maintenance Checking the sensors (cont.) External unit: NTC 50 k (without ID) Ω 1000 Temperature in °C Fig. 66 Checking fuses Fuse location: See from page 33. Fuse F1 is located on the mains terminal of the heat Fuse F101: ■...
  • Page 76 Parts lists, internal unit Overview of assemblies, internal unit 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 77 The following details are required when ordering parts: ■ Serial no. (see type plate on page 76) ■ Position number of the part (from this parts list) Pos. Part 0004 Touch-up spray paint, white 0005 Touch-up paint stick, white 0007 Vitocal 222-S installation and service instructions...
  • Page 78 Parts lists, internal unit Internal unit casing 0003 0006 0005 0001 0007 0004 0008 0009 0002 0010 Fig. 68...
  • Page 79 0002 Front panel, bottom 0003 Side panel, left 0004 Side panel, right 0005 Top panel, front 0006 Top panel, back 0007 Logos, Viessmann and Vitocal 222 0008 Support, heat pump control unit 0009 Screws (set) 0010 Fixing elements (2 pce)
  • Page 80 Parts lists, internal unit Internal unit electrical equipment 0018 0020 0033 0017 0019 0001 0032 0007 0006 0005 0010 0002 0009 0037 0011 0008 0030 0013 0023 0025 0024 0034 0035 0039 0040 Fig. 69...
  • Page 81 Parts lists, internal unit Internal unit electrical equipment (cont.) Pos. Part 0001 Programming unit 0002 Controller and sensor PCB with cover (CU401) 0005 Main PCB with cover (MB761) 0006 Expansion PCB with cover (SA135) 0007 Coding card 0008 AVI PCB (IU122-A10) 0009 Base support, controller and sensor PCB 0010...
  • Page 82 Parts lists, internal unit Internal unit hydraulics 0005 0037 0038 0041 0031 0027 0023 0030 0030 0031 0032 0032 0036 0043 0044 0045 0037 0023 0008 0038 0023 0034 0047 0035 0020 0016 0028 0036 0035 0035 0034 0031 0042 0046 0043 0032...
  • Page 83 Parts lists, internal unit Internal unit hydraulics (cont.) Pos. Part 0001 Back panel, lower casing 0002 Bottom panel 0003 Angle profile, lower casing, left 0004 Angle profile, lower casing, right 0005 Top panel, lower casing 0006 Retaining rail 0007 Insulation, bottom panel 0008 Connection line, heating water flow/return 0009...
  • Page 84 Parts lists, internal unit Internal unit hydraulics (cont.) Pos. Part 0045 Only for type AWT/AWT-AC 221.A04 to A07: Reducers (set) 0046 Liquid line 10 mm 0047 Hot gas line 15 mm 0048 Connection set...
  • Page 85 Parts lists, internal unit Internal unit hydraulics...
  • Page 86 Parts lists, internal unit Internal unit cylinder 0007 0019 0029 0012 0027 0029 0008 0016 0015 0019 0014 0029 0029 0029 0013 0004 0001 0015 0028 0002 0014 0018 0026 0017 0029 0010 0025 0029 0026 0026 0029 0020 0016 0009 0011 0029...
  • Page 87 Parts lists, internal unit Internal unit cylinder (cont.) Pos. Part 0001 DHW cylinder with internal indirect coil 170 l 0002 Back panel, casing top 0003 Retaining bracket for connection hoses 0004 Retaining bracket, DHW cylinder 0005 Return hose, DHW heating 0006 Flow hose, DHW heating 0007...
  • Page 88 Parts lists, internal unit Internal unit cylinder (cont.)
  • Page 89 Parts list, external unit 230 V~, type AWT/AWT-AC 221.A04 Ordering parts The following details are required when ordering parts: ■ Serial no. (see type plate) ■ Position number of the part (from this parts list)
  • Page 90 Parts list, external unit 230 V~, type AWT/AWT-AC 221.A04 Parts, external unit 230 V~, type AWT/AWT-AC 221.A04 0024 0022 0010 0026 0020 0031 0021 0028 0023 0009 0014 0027 0006 0005 0004 0030 0025 0002 0008 0019 0015 0017 0016 0001 0003 0032...
  • Page 91 Parts list, external unit 230 V~, type AWT/AWT-AC 221.A04 Parts, external unit 230 V~, type AWT/AWT-AC 221.A04 (cont.) Pos. Part 0001 Front casing 0002 Air inlet ring 0003 Protective grille, right 0004 Axial fan 0005 DC motor 0006 Motor support 0007 Bottom panel 0008...
  • Page 92 Parts list, external unit 230 V~, type AWT/AWT-AC 221.A04 Parts, external unit 230 V~, type AWT/AWT-AC 221.A04 (cont.)
  • Page 93 Parts list, external unit 230 V~, type AWT/AWT-AC 221.A05/A07 Ordering parts The following details are required when ordering parts: ■ Serial no. (see type plate) ■ Position number of the part (from this parts list)
  • Page 94 Parts list, external unit 230 V~, type AWT/AWT-AC 221.A05/A07 Parts, external unit 230 V~, type AWT/AWT-AC 221.A05/A07 0033 0032 0031 0027 0036 0036 0028 0030 0026 0035 0029 0004 0007 0034 0038 0006 0003 0020 0012 0022 0021 0043 0042 0005 0023 0037...
  • Page 95 Parts list, external unit 230 V~, type AWT/AWT-AC 221.A05/A07 Parts, external unit 230 V~ , type AWT/AWT-AC… (cont.) Pos. Part 0001 Air discharge grille 0002 Side panel, left 0003 M8 nut 0004 Axial fan 0005 Module, 4-way diverter valve 0006 4-way diverter valve 0007 DC motor...
  • Page 96 Parts list, external unit 230 V~, type AWT/AWT-AC 221.A05/A07 Parts, external unit 230 V~ , type AWT/AWT-AC… (cont.)
  • Page 97 Parts lists, external unit 230 V~, type AWT/AWT-AC 221.A10/A13 Overview of assemblies 230 V~, type AWT/AWT-AC 221.A10/A13 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 98 Parts lists, external unit 230 V~, type AWT/AWT-AC 221.A10/A13 External unit casing 230 V~, type AWT/AWT-AC 221.A10/A13 0001 0021 0022 0023 0014 0017 0018 0019 0020 0013 0011 0009 0010 0012 0015 0008 0005 0011 0007 0010 0002 0003 0015 0007 0004 0006...
  • Page 99 Parts lists, external unit 230 V~, type AWT/AWT-AC 221.A10/A13 External unit casing 230 V~ , type AWT/AWT-AC… (cont.) Pos. Part 0001 Top panel 0002 Side panel, right 0003 Cover panel, top right 0004 Cover panel, bottom right 0005 Front panel, left 0006 Front panel, right 0007...
  • Page 100 Parts lists, external unit 230 V~, type AWT/AWT-AC 221.A10/A13 External unit electrical equipment 230 V~, type AWT/AWT-AC 221.A10/A13 0005 0002 0003 0004 0001 0010 0011 0006 0013 0008 0007 0012 0009 Fig. 76...
  • Page 101 Parts lists, external unit 230 V~, type AWT/AWT-AC 221.A10/A13 External unit electrical equipment 230 V~ , type… (cont.) Pos. Part 0001 Main PCB 0002 Driver PCB 0003 Capacitor PCB 0004 PCB, mains filter 0005 Choke coil 0006 Coil, electronic expansion valve 0007 Coil, 4-way diverter valve 0008...
  • Page 102 Parts lists, external unit 230 V~, type AWT/AWT-AC 221.A10/A13 External unit hydraulics 230 V~, type AWT/AWT-AC 221.A10/A13 0007 0008 0004 0003 0002 0006 0001 0010 0005 Fig. 77...
  • Page 103 Parts lists, external unit 230 V~, type AWT/AWT-AC 221.A10/A13 External unit hydraulics 230 V~ , type… (cont.) Pos. Part 0001 Compressor 0002 Compressor power supply cover 0003 Liquid separator 0004 High pressure switch 0005 Shut-off valve, hot gas line 0006 Oil separator 0007 Electronic expansion valve...
  • Page 104 Parts lists, external unit 230 V~, type AWT/AWT-AC 221.A10/A13 External unit hydraulics 230 V~ , type… (cont.)
  • Page 105 Parts lists, external unit 400 V~, type AWT/AWT-AC 221.B10/B13/B16 Overview of assemblies 400 V~, type AWT/AWT-AC 221.B10/B13/B16 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 106 Parts lists, external unit 400 V~, type AWT/AWT-AC 221.B10/B13/B16 External unit casing 400 V~, type AWT/AWT-AC 221.B10/B13/B16 0001 0022 0021 0012 0017 0023 0014 0018 0009 0019 0013 0011 0010 0015 0005 0008 0007 0011 0002 0003 0020 0010 0015 0004 0007 0016...
  • Page 107 Parts lists, external unit 400 V~, type AWT/AWT-AC 221.B10/B13/B16 External unit casing 400 V~ , type AWT/AWT-AC… (cont.) Pos. Part 0001 Top panel 0002 Side panel, right 0003 Top cover 0004 Bottom cover 0005 Front panel, left 0006 Front panel, right 0007 Air discharge grille 0008...
  • Page 108 Parts lists, external unit 400 V~, type AWT/AWT-AC 221.B10/B13/B16 External unit electrical equipment 400 V~, type AWT/AWT-AC 221.B10/B13/B16 0005 0002 0004 0003 0010 0001 0011 0017 0008 0006 0007 0009 0012 Fig. 80...
  • Page 109 Parts lists, external unit 400 V~, type AWT/AWT-AC 221.B10/B13/B16 External unit electrical equipment 400 V~ , type… (cont.) Pos. Part 0001 Main PCB 0002 Driver PCB 0003 Capacitor PCB 0004 PCB, mains filter 0005 Choke coil 0006 Coil, electronic expansion valve 0007 Coil, 4-way diverter valve 0008...
  • Page 110 Parts lists, external unit 400 V~, type AWT/AWT-AC 221.B10/B13/B16 External unit hydraulics 400 V~, type AWT/AWT-AC 221.B10/B13/B16 0007 0004 0003 0002 0008 0006 0011 0010 0001 0009 0005 0008 Fig. 81...
  • Page 111 Parts lists, external unit 400 V~, type AWT/AWT-AC 221.B10/B13/B16 External unit hydraulics 400 V~ , type… (cont.) Pos. Part 0001 Compressor 0002 Module, 4-way diverter valve 0003 Liquid separator 0004 High pressure switch 0005 Shut-off valve, hot gas line 0006 Oil separator 0007 Electronic expansion valve...
  • Page 112 Commissioning/service reports Hydraulic parameter report Setting and test values Setpoint Commissioning Maintenance/ Service Testing the external heating circuit pumps Circulation pump type Circulation pump stage Overflow valve setting Commissioning, primary circuit Air intake temperature °C ("Diagnosis" "System overview") Ó Air discharge temperature °C ("Diagnosis"...
  • Page 113 Commissioning/service reports Control parameters report Parameter description "Vitotronic 200" service instructions System definition Parameters Code Delivered condition Commission- Maintenance/ service "System scheme" (see chapter "System 7000 scheme") ≙ "Temperature differential for calculating 7003 40 ( 4 K) the heating limit" ≙...
  • Page 114 Commissioning/service reports Control parameters report (cont.) Parameters Code Delivered condition Commission- Maintenance/ service "Temperature sensor at bottom of DHW 600E cylinder" "Enable booster heaters for DHW heat- 6014 ing" "Enable electric heaters for DHW heat- 6015 ing" "Priority DHW heating with combi cylin- 6016 der"...
  • Page 115 Commissioning/service reports Control parameters report (cont.) Heating water buffer cylinder Parameters Code Delivered condition Commission- Maintenance/ service "Enable buffer cylinder/low loss header" 7200 ≙ "Temp in operating status fixed value for 7202 500 ( 50 °C) buffer cyl" ≙ "Hysteresis temperature heating buffer 7203 50 ( 5 K)
  • Page 116 Commissioning/service reports Control parameters 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 50 ( 5 °C) "Influence room temperature hook-up 7104...
  • Page 117 Commissioning/service reports Control parameters 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 118 Commissioning/service reports Control parameters 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 119 Specification Specification 230 V appliances Type AWT-AC 221.A04 221.A05 221.A07 221.A10 221.A13 Heating output data to EN 14511 (A2/W35) Rated heating output 3.00 4.05 5.60 7.70 10.60 Fan speed Power consumption 0.91 1.18 1.73 2.20 3.25 Coefficient of performance 3.27 3.43 3.24 3.50...
  • Page 120 Specification Specification (cont.) Type AWT-AC 221.A04 221.A05 221.A07 221.A10 221.A13 Heating water (secondary cir- cuit) Content 16.7 16.7 16.7 17.7 17.7 Minimum flow rate (must be 1000 1000 1600 1600 maintained) Minimum volume in the heating system (cannot be fitted with shut-off devices) Max.
  • Page 121 Specification Specification (cont.) Type AWT-AC 221.A04 221.A05 221.A07 221.A10 221.A13 Refrigerant circuit Refrigerant R410A R410A R410A R410A R410A Refrigerant charge 2.15 2.15 2.95 2.95 ■ Global warming potential 2.15 2.15 2.95 2.95 ■ (GWP) equivalent 2088 2088 2088 2088 2088 ■...
  • Page 122 Specification Specification (cont.) Type AWT-AC 221.A04 221.A05 221.A07 221.A10 221.A13 Connections Heating water flow Cu 28 x 1 Cu 28 x 1 Cu 28 x 1 Cu 28 x 1 Cu 28 x 1 Heating water return Cu 28 x 1 Cu 28 x 1 Cu 28 x 1 Cu 28 x 1...
  • Page 123 Specification Specification (cont.) Type AWT-AC 221.B10 221.B13 221.B16 Heating output data to EN 14511 (A7/W35, 5 K spread) Rated heating output 10.16 12.07 15.5 Fan speed Air flow rate 3456 4217 4217 Power consumption 2.00 2.57 3.76 Coefficient of performance 5.08 4.69 4.11...
  • Page 124 Specification Specification (cont.) Type AWT-AC 221.B10 221.B13 221.B16 External unit electrical values Rated voltage, compressor 3/N/PE 400 V/50 Hz ■ Max. operating current, com- 7.85 9.89 13.09 ■ pressor Starting current, compressor ■ Starting current, compressor ■ with stalled armature MCB/fuse protection ■...
  • Page 125 Specification Specification (cont.) Type AWT-AC 221.B10 221.B13 221.B16 Integral DHW cylinder Capacity Continuous output for DHW heating from 10 to 60 °C Performance factor N DIN 4708 Max. draw-off rate at the speci- l/min 15.9 16.5 16.9 fied performance factor N DHW heating from 10 to 45 °C Max.
  • Page 126 Specification Specification (cont.) Type AWT-AC 221.B10 221.B13 221.B16 Sound power of external unit at rated heating output (measurements with reference to EN 12102/ EN ISO 9614-2) Weighted total sound power level dB(A) At A7 ± /W55 ± ■ in night mode dB(A) At A7 ±...
  • Page 127 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 Final decommissioning and disposal Viessmann products can be recycled. Components...
  • Page 128 Declaration of conformity We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, declare as sole responsible body that the product Vitocal 222-S, type AWT and AWT-AC including the Vitotronic 200, type WO1C heat pump control unit com- plies with the following standards:...
  • Page 129 Keyword index Keyword index Casing assembly Air discharge...............11 – Internal unit............. 78 Air discharge grille removal........56 Casing parts Air intake..............11 – Internal unit............. 78 Air short circuit............11 Casing spare parts Air vent valve, DHW cylinder........68 – Internal unit............. 78 Air vent valve, secondary circuit.........69 Charging Ambient temperatures..........14 –...
  • Page 130 Keyword index Keyword index (cont.) Cooling............... 34 Electricity meter............37 Cooling control............34 – Economy tariff........... 44, 45 Cooling function............62 – Premium tariff............44, 45 Cooling water flow............30 Electronic expansion valve......70, 71, 72 Copper seal ring............27 Entry grommets............20, 29 Corrosion damage..........55, 56 Evacuating refrigerant circuit........50 Cover of external unit, fitting........
  • Page 131 Keyword index Keyword index (cont.) Fuse Instantaneous heating water heater..44, 45, 62, 68 – 230 V~ components..........33 – High limit safety cut-out reset........64 – AVI PCB............33, 39 – Power cable.............. 8 – F1................75 – Power supply............43 – F101................ 75 –...
  • Page 132 Keyword index Keyword index (cont.) Minimum room volume..........14 Parts Minimum system pressure......... 53 – External unit, type AWT/AWT-AC 221.A04..... 90 Mixer extension kit............. 35 – External unit, type AWT/AWT-AC 221.A05/A07..94 Modbus distributor............38 – External unit, type AWT/AWT-AC 221.A10/A1397, 98 – External unit, type AWT/AWT-AC 221.B10/B13/ B16................105 Noise................
  • Page 133 Keyword index Keyword index (cont.) Pressure check............49 Safety connections.............36 Pressure gauge............29 Safety goggles............52 Pressure gauge connection........30 Safety instructions, refrigerant........52 Pressure gauge set............ 51 Safety valve............29, 30 Pressure reducer............30 Sealing faces..............20 Pressure sensor............69 Seal rings, replacing..........29, 53 Product information............
  • Page 134 Keyword index Keyword index (cont.) Spare parts, hydraulics TN-C system............44, 45 – External unit, type AWT/AWT-AC 221.A10/A13..102 Top-up water.............. 52 – External unit, type AWT/AWT-AC 221.B10/B13/ Torque B16................ 110 – Refrigerant lines..........25, 27 Spare parts, internal unit..........76 –...
  • Page 136 7513685 7513686 7514941 7514942 7552198 7552199 7554825 7560796 7560797 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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