Viessmann Vitocal 300-A Installation And Service Instructions For Contractors
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Viessmann Vitocal 300-A Installation And Service Instructions For Contractors

Air/water heat pump with electric drive, 400 v~
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VIESMANN
Installation and service
instructions
for contractors
Vitocal 300-A
Type AWO-AC 301.B11 to B14
Air/water heat pump with electric drive, 400 V~
For applicability, see the last page
VITOCAL 300-A
Please keep safe.
5516 436 GB
5/2014

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Summary of Contents for Viessmann Vitocal 300-A

  • Page 1 VIESMANN Installation and service instructions for contractors Vitocal 300-A Type AWO-AC 301.B11 to B14 Air/water heat pump with electric drive, 400 V~ For applicability, see the last page VITOCAL 300-A Please keep safe. 5516 436 GB 5/2014...

  • Page 2: Safety Instructions

    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 Index Index Installation instructions Preparing for installation Intended use......................Requirements concerning on-site connections............ Siting requirements....................Installation sequence Installing the heat pump..................17 Making the hydraulic connections................ 18 Electrical connections, heat pump................ 21 Electrical connections, heat pump control unit............. 26 Power supply......................51 Closing the heat pump..................
  • Page 5 Index Index (cont.) Certificates Declaration of conformity..................116 Keyword index....................117...

  • Page 6: Intended Use

    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 Requirements concerning on-site connections Ø 1100 A Cable entries C Heating water return (connection B Heating water flow (connection R 1¼) D Condensate drain hose (flexible) R 1¼)

  • Page 8: Siting Requirements

    Preparing for installation Siting requirements Please note Please note Prevent damage to the appliance Tilting the compressor at a steep during handling. angle inside the heat pump can Never put weight on the top, front result in appliance damage. or side panels of the appliance. Max.

  • Page 9: Minimum Clearances

    Preparing for installation Siting requirements (cont.) Minimum clearances 1500 1500 Foundation Site the heat pump level on a durable ■ Drain all condensate derived from the and solid base. We recommend laying a air via a DN 40 drain pipe, which must concrete foundation as described in the be protected from frost and provide a following chapters.
  • Page 10 Preparing for installation Siting requirements (cont.) Weight including outer casing: 250 kg Dimensions...
  • Page 11 Preparing for installation Siting requirements (cont.) A Heat pump F Hydraulic connections on the heat B Concrete foundation (300 mm thick) pump (heating water flow and heat- consisting of: ing water return) ■ Concrete slab C25/30, BSt 500 S G Condensate drain DN 40 (on site) and M H Soft ground, gravel or crushed stone K Frost protection (compacted...
  • Page 12 Preparing for installation Siting requirements (cont.) Cables and hydraulic lines Laying the lines underground and routing in through the exterior wall ON M ON M B Concrete foundation (300 mm thick) E Hydraulic connection set (acces- consisting of: sory): Connection lines for heating ■...
  • Page 13 Preparing for installation Siting requirements (cont.) M Power cable, compressor/fan (3/N/ Heating water connection (hydraulic PE 400 V/50 Hz, on site) connection lines O) Recommended cable: 5 x 2.5 mm Use the hydraulic connection set (acces- flexible N 2 connecting cables inside DN 100 sory).
  • Page 14 Preparing for installation Siting requirements (cont.) Power cable M Routing KG conduits C, D ■ Run power cable M to the heat pump ■ Provide a wire pull for the cables (M, outside the building in a KG conduit DN 100. ■...
  • Page 15 Preparing for installation Siting requirements (cont.) Required cables and hydraulic lines A Heat pump D 2 connecting cables inside DN 100 B Electric terminal area in the heat KG conduit (on site), fully wired (5, 15 or 30 m): pump ■...
  • Page 16 Preparing for installation Siting requirements (cont.) E Heat pump control unit power N Flow temperature sensor, secon- cable dary circuit: Install in the heating water flow inside the building. Recommended cable: 3 x 1.5 mm Cable with plug, 2.0 m long: Extend (5 x 1.5 mm with power-OFF) on site if required.
  • Page 17 Installation sequence Installing the heat pump Observe the siting requirements: See page 8.
  • Page 18 Installation sequence Making the hydraulic connections Connect heating water flow and heating water return at the heat pump Please note Note Avoid appliance damage: ■ The connecting hoses can be short- ■ Fit supplied connecting hoses ened. (bends) so that they are free of ■...
  • Page 19 Installation sequence Making the hydraulic connections (cont.) Connect heating circuits and DHW cylinder in the building 1. Equip the secondary circuit on site 3. Fill and vent secondary circuit. with an expansion vessel and safety assembly (in accordance with 4. Thermally insulate pipes inside the EN 12828).

  • Page 20: Connecting The Condensate Drain

    Installation sequence Making the hydraulic connections (cont.) 1. Fit pipe section with sensor well A. 3. Connect plug D of the sensor lead and the cable to the heat pump con- 2. Secure flow temperature sensor for trol unit (cable with plug, length secondary circuit C with spring clip 2.0 m, extend on site if required).
  • Page 21 Installation sequence Making the hydraulic connections (cont.) A Condensate drain hose B Condensate drain (drain pipe DN 40) Electrical connections, heat pump Danger Danger Damaged cable insulation can Incorrect wiring can lead to seri- cause injury and damage to the ous injury from electrical current appliance.

  • Page 22: Opening The Wiring Chamber

    Installation sequence Electrical connections, heat pump (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 23 Installation sequence Electrical connections, heat pump (cont.) Connecting cables Connecting cables from the heat pump control unit < 42 V 230 V~...
  • Page 24 Installation sequence Electrical connections, heat pump (cont.) A Connecting cable: Control cable E Compressor switching module 230 V~ to heat pump control unit F EEV PCB (refrigerant circuit control- (accessory) ler [4]): See service instructions for B Connecting cable: LV cable < 42 V "Vitotronic 200".
  • Page 25 Installation sequence Electrical connections, heat pump (cont.) 400 V~ G Mains terminals, compressor/fan 3/ H Power cable 3/N/PE 400 V/50 Hz N/PE 400 V/50 Hz: Observe infor- (on site, recommended cable: mation from page 51. 5 x 2.5 mm flexible)
  • Page 26 Installation sequence Electrical connections, heat pump control unit Fitting the heat pump control unit and inserting cables Wall mounting base and casing base, fitting...
  • Page 27 Installation sequence Electrical connections, heat pump control unit (cont.) Fitting the casing front A Cross connect PCB C Casing front B ON/OFF switch plug-in connection D Controller and sensor PCB...
  • Page 28 Installation sequence Electrical connections, heat pump control unit (cont.) Heat pump control unit, open...
  • Page 29 Installation sequence Electrical connections, heat pump control unit (cont.) Cables, inserting and applying strain relief A Cables with moulded strain relief B On-site cables/leads...

  • Page 30: Connecting Cables

    Installation sequence Electrical connections, heat pump control unit (cont.) Connecting cables GN/YE A Cross connect PCB D Connecting cable (accessory): Con- trol cable 230 V~ to heat pump B Controller and sensor PCB C Connecting cable (accessory): LV cable < 42 V to heat pump Adapting the heat pump control unit The secondary pump, the circulation pump for cylinder heating and/or the...
  • Page 31 Installation sequence Electrical connections, heat pump control unit (cont.) The red cores connect with the following terminals: A X6.6 — 211.2 C X6.2 — 211.3 B X6.4 — 211.4 D X6.1 — 224.4 Please note Incorrect core assignment can result in incorrect functions. Remove all 4 red cores.
  • Page 32 Installation sequence Electrical connections, heat pump control unit (cont.) A Coding card B Controller and sensor PCB...
  • Page 33 Installation sequence Electrical connections, heat pump control unit (cont.) Overview of electrical connections Note ■ Route 230 V~ cables and LV cables separately and bundle them tightly together at the terminals. This ensures that, in the event of a fault, e.g. when detaching a wire, the wires cannot drift into the adjacent voltage area.
  • Page 34 Installation sequence Electrical connections, heat pump control unit (cont.) a:C] a:C] sYA sYS A Cross connect PCB C Expansion PCB F1 MCB/fuse 6.3 A (slow) D Controller and sensor PCB B Main PCB F3 Fuse 6.3 A (slow)
  • Page 35 Installation sequence Electrical connections, heat pump control unit (cont.) Main PCB Information regarding the connection Set the required parameters during com- values missioning: See from page 69. ■ 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 36 Installation sequence Electrical connections, heat pump control unit (cont.) Plug sYA Terminals Function Explanation 211.3 Instantaneous heating wa- Connection values ter heater switching, ■ Output: 10 W stage 1 ■ Voltage: 230 V~ ■ Max. switching current: 4(2) A 211.4 Connection values ■...
  • Page 37 Installation sequence Electrical connections, heat pump control unit (cont.) Connecting a temperature limiter as a maximum temperature limiter for under- floor heating Connecting a general temperature Connecting the temperature limiter, limiter B part no. 7151 728, 7151 729 B X2.N X2.N sÖ...
  • Page 38 Installation sequence Electrical connections, heat pump control unit (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 39 Installation sequence Electrical connections, heat pump control unit (cont.) Expansion PCB Information regarding the connection Set the required parameters during com- values missioning: See from page 69. ■ 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 40 Installation sequence Electrical connections, heat pump control unit (cont.) Plug sXS Terminals Function Explanation 222.3 Control of external heat Floating contact 222.4 sources 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 41 Installation sequence Electrical connections, heat pump control unit (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 42 Installation sequence Electrical connections, heat pump control unit (cont.) Central fault message 223.1 230 V~, 0.5 A 223.2 A Terminals on extension PCB Plug sXD Terminals Function Explanation 224.4 Instantaneous heating wa- Connection values: ter heater switching, ■ Output: 10 W stage 2 ■...
  • Page 43 Installation sequence Electrical connections, heat pump control unit (cont.) Immersion heater (400 V~) 224.7 X2.N A Immersion heater, power supply B Terminals of the heat pump control 3/N/PE 400 V/50 Hz unit...
  • Page 44 Installation sequence Electrical connections, heat pump control unit (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 45 Installation sequence Electrical connections, heat pump control unit (cont.) Terminals Function Explanation ■ Power supply terminals Terminals for signal and safety connec- of control unit "L1" and tions auxiliary components ■ Switched phase L1: Note X3.1, X3.2, X3.3, X3.7, Switched phase can be used for on-site X3.11, X3.13 system components.
  • Page 46 Installation sequence Electrical connections, heat pump control unit (cont.) Terminals Function Explanation Note ■ No parameters need to be set ■ No jumper should be installed if a pow- er-OFF contact is connected. ■ The compressor is "forced" off as soon as the contact opens.
  • Page 47 Installation sequence Electrical connections, heat pump control unit (cont.) Terminals Function Explanation X3.12 "External demand" signal: Requires zero volt N/O contact: X3.13 external starting of com- ■ Closed: Demand pressor and pumps; mixer ■ Open: No demand in control mode or OPEN, ■...
  • Page 48 Installation sequence Electrical connections, heat pump control unit (cont.) Plug Sensor/component Type Cylinder temperature sensor, bottom NTC 10 kΩ (X25.7/ X25.8) Flow temperature sensor, secondary circuit Pt500A (X25.9/ (PTC) X25.10) Contact humidistat 24 V– — Note If a 230 V~ contact humidistat (connection to X3.8/X3.9) is used for cooling, set a jumper, otherwise the heat pump will not start (message "CA Protectn device prim- ry").
  • Page 49 Connection for EEV PCB in the heat pump (refrigerant circuit controller [4]): See service instructions for "Vitotronic 200". Note If other Viessmann appliances are to be connected to Modbus 1 (e.g. Vitovent 300-F), insert Modbus distributor (accessory): See installation instructions for "Modbus dis- tributor".
  • Page 50 Installation sequence Electrical connections, heat pump control unit (cont.) Swimming pool heating Note ■ Swimming pool heating is controlled via extension EA1 with KM BUS. ■ Make connections to extension EA1 only according to the following dia- gram. ■ A filter circuit pump cannot be control- led via the heat pump control unit.

  • Page 51: Power Supply

    Installation sequence Electrical connections, heat pump control unit (cont.) D Fuses and contactor for circulation G Circulation pump for swimming pool pump for swimming pool heating heating (accessory) H Thermostat for swimming pool tem- (accessories) E Jumper perature control (floating contact: 230 V~, 0.1 A, accessories) F 3-way diverter valve for "Swimming K Connection on controller and sensor...
  • Page 52 Installation sequence Power supply (cont.) ■ In negotiations with your power supply ■ Protect the power supply to the heat utility, different supply tariffs for the pump control unit with an MCB/ fuse of main power circuits may be offered. max.
  • Page 53 Installation sequence Power supply (cont.) Heat pump control unit power supply 230 V~ ■ Max. fuse rating 16 A max.16 A ■ Standard tariff: No optional economy X3.18 1/N/PE tariff with power-OFF for the heat X2.1 230 V / 50 Hz pump control unit X1.1 ■...
  • Page 54 Installation sequence Power supply (cont.) Note Observe the technical connection condi- tions of the relevant power supply util- ity. X3.7 X3.6 Diagram excluding MCB/fuses and RCD A Heat pump control unit F Backup fuse ripple control receiver B Instantaneous heating water heater G Ripple control receiver (contact C Compressor open: power-OFF enabled) TNC...
  • Page 55 Installation sequence Power supply (cont.) X3.7 X3.6 Diagram excluding MCB/fuses and RCD A Heat pump control unit G Ripple control receiver (contact B Instantaneous heating water heater open: power-OFF enabled) with C Compressor backup fuse H Economy tariff meter D Heat pump control unit power sup- K Feed: TNC system E Standard tariff meter L Mains isolator...

  • Page 56: Mains Power Supply In Conjunction With On-Site Power Consump- Tion

    Installation sequence Power supply (cont.) 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 F Terminal B Additional consumers (of power G Double-tariff meter (for special tariff generated on site) in the house- for heat pump) hold...
  • Page 57 Installation sequence Power supply (cont.) H Bi-directional meter (for PV systems L Isolator for the domestic power sup- to consume power on site): ply connection (distribution panel) M Distribution panel Energy taken from power supply utility and energy fed into power N Domestic distribution box supply utility K Meter with reverse block:...
  • Page 58 Installation sequence Closing the heat pump (cont.) Please note Information on step 2 The protective foil can no longer Use a weatherproof marker. be removed once the outer cas- ing has been fitted. Pull off the protective foil before fitting the outer casing. AWO-AC 301.B11 AWO-AC 301.B14 A Logos...
  • Page 59 Installation sequence Closing the heat pump (cont.) 3 Nm 3 Nm...

  • Page 60: Steps - Commissioning, Inspection And 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..........61 • 2. Preparing reports............61 •...
  • Page 61 Commissioning, inspection, maintenance Further details regarding the individual steps Opening the heat pump Danger 1. Remove outer casing: Steps 2 to 8 on Contact with 'live' components page 59 in reverse order. can lead to serious injury from electric current. 2.

  • Page 62: Checking The Refrigerant Circuit For Leaks

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the refrigerant circuit for leaks Danger Note The refrigerant is a non-poison- Work on the refrigerant circuit must ous gas that displaces air. only be carried out by certified personnel Unregulated escape of refriger- (in accordance with EC 842/2006 and ant in enclosed spaces can result...
  • Page 63 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) A Manual air vent valve B Drain valve 1. Open any non-return valves installed 4. Check the system pressure at the on site. pressure gauge (on site): Top up with water if required.

  • Page 64: Checking The Expansion Vessel And Heating Circuit Pressure

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Please note 7. To prevent damage to electrical com- To prevent equipment dam- ponents, connect an on-site hose to age, check the flow and return manual air vent valve A. Open man- connections of the heat pump ual air vent valve.

  • Page 65: Cleaning The Interior

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Cleaning the interior Please note Chemical deposits in the interior can cause appliance damage. Only clean the interior with clean water, max. temperature 50 °C.

  • Page 66: Commissioning The System

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) ■ Clean interior A with a vacuum cleaner first and then with a hand shower. If necessary, wipe dry with a soft cloth. ■ Check condensate drain B for free drainage;...
  • Page 67 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) ■ When the unit is first commissioned, ■ Manually switching some appliance the display is in German. components during commissioning enables the control unit to display messages. These messages are not Sprache appliance faults.
  • Page 68 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Language Date Date/time Time Start commissioning? Coding Parameter group Parameter level 1 select Sensor values Temperature sensors display Signal inputs Signal inputs display Actuator test Actuator test carry out Subscriber check Subscriber check carry out Function check...
  • Page 69 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 70 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 71 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 without "System scheme 7000" mixer) ■ With heating circuit M2/HC2 (for heating circuit with mixer) ■...
  • Page 72 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Pump/component Parameter Setting Remote control for "Cooling" Ó "1" separate cooling cir- "Remote control cooling cuit circ 7116" "Cooling" Ó "0": Room temperature sensor connected at F16 "Ranking room temp "1": Vitotrol room temperature sensor separate cooling circuit 7106"...
  • Page 73 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) External functions Parameter Setting External changeover of the "System definition" Ó "0" to "127" operating status of various "System components for system components external changeover 7011" "System definition" Ó "0" to "3" "Operating status for ex- ternal changeover 7012"...
  • Page 74 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Parameter Setting Lead heat pump Lag heat pump "Communication" Ó – "1" to "4" "Number of heat pump in cas- cade 7707" Note Specify a different number for each lag heat pump. "System definition"...
  • Page 75 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 76 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Cooling function Cooling function parameters Setting "Cooling" Ó "3" "Cooling 7100" "Cooling" Ó "1": Heating circuit A1/HC1 "Cooling circuit 7101" "2": Heating circuit M2/HC2 "3": Heating circuit M2/HC2 "4": Separate cooling circuit Energy meter Electricity meter parameters Setting...

  • Page 77: Instructing The System User

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Ventilation Ventilation unit parameters Setting "Ventilation" Ó "1" "Vitovent enable 7D00" Other enabling settings, if applicable: "Ventilation" Ó ■ "Enable preheater bank electric 7D01" "1" ■ "Enable reheater bank hydraulic 7D02" "1"...
  • Page 78 Troubleshooting Repairs Overview of electrical components ■ Heat pump: See page 23. ■ Heat pump control unit: See page 33. Removing the side panel Please note Constant heat pump operation without the side panel can cause appliance damage. Never switch on the heat pump if the side panel has been removed.
  • Page 79 Troubleshooting Repairs (cont.)

  • Page 80: Overview Of Internal Components

    Troubleshooting Repairs (cont.) Overview of internal components A Low pressure sensor H Schrader valve, high pressure side B Electronic expansion valve for suc- K High pressure sensor tion gas superheating (AHX) L Secondary circuit return tempera- C Electronic expansion valve for con- ture sensor (Pt500A) trolling fill level of refrigerant collec- M Drain valve...

  • Page 81: Checking Sensors

    Troubleshooting Repairs (cont.) Q Suction gas temperature sensor V Intermediate injection solenoid (downstream of evaporator) valve W Liquid gas temperature sensor (NTC 10 kΩ) R Filter dryer (downstream of refrigerant collec- tor) (NTC 10 kΩ) S Schrader valve, low pressure side X Schrader valve, high pressure side T Suction gas temperature sensor Y Refrigerant collector fill level sen-...
  • Page 82 ■ Secondary circuit return temperature sensor (X25.11/X25.12) ■ Air inlet temperature sensor (X25.1/X25.2) ■ Air outlet temperature sensor (X25.3/X25.4) ■ Sensors in the refrigerant circuit Viessmann NTC 10 kΩ (blue marking) Outside temperature sensor Further sensors -20 -10 10 20 30 Temperature in °C...
  • Page 83 Troubleshooting Repairs (cont.) Viessmann NTC 20 kΩ (orange marking) Temperature in °C Viessmann Pt500A (green marking) 140 180 Temperature in °C Checking MCB/fuses Heat pump control unit MCB/fuse location: See page 24. Position of the fuses: See from The 6.3 A (slow, H) MCB/fuse is located page 33.
  • Page 84 Troubleshooting Repairs (cont.) Fuses F1 and F3: ■ 6.3 A (slow), 250 V~ ■ Max. power loss ≤ 2.5 W Danger Removing the fuse does not switch the power circuit to zero volt. Contact with 'live' compo- nents can lead to serious injury from electric current.

  • Page 85: Overview Of Assemblies

    Parts lists Overview of assemblies A Type plate D Heat pump module assembly B Casing assembly E Additional component assembly C Base frame assembly F Air routing assembly...
  • Page 86 Parts lists Overview of assemblies (cont.) G Miscellaneous assembly H Electrical equipment assembly K Heat pump control unit assembly Casing Pos. Component Part no. 0001 Cover with gasket 7840991 0002 Casing top part with logo 7840992 0003 Casing top part 7840993 0004 Casing central part...
  • Page 87 Parts lists Casing (cont.) 0001 0003 0003 0010 0008 0008 0004 0004 0003 0002 0008 0008 0003 0010 0008 0008 0006 0006 0004 0004 0009 0009 0008 0008 0009 0007 0006 0005...

  • Page 88: Base Frame

    Parts lists Base frame Pos. Component Part no. 0001 Evaporator 7840949 0002 Brace, left/right 7840950 0003 Brace, front/rear 7840951 0004 Condensate drain pan 7840952 0005 Fan mounting plate 7840953 0006 Side brace with recess 7840954 0007 Top panel 7840955 0008 Front brace 7840956 0009...
  • Page 89 Parts lists Base frame (cont.) 0002 0003 0002 0003 0001 0018 0004 0013 0006 0005 0018 0006 0007 0006 0011 0014 0012 0014 0014 0011 0012 0014 0012 0014 0008 0010 0009 0014 0006 0008 0010 0016 0015 0017...

  • Page 90: Heat Pump Module

    Parts lists Heat pump module Pos. Component Part no. 0001 Support, right/left 7840825 0002 Mounting panel 7840826 0003 Hot gas line 4-way diverter valve 7840827 0004 Refrigerant line, 4-way diverter valve– evaporator 7840828 0005 Suction gas line 4-way diverter valve 7840829 0006 Low pressure sensor PT5-18T...
  • Page 91 Parts lists Heat pump module (cont.) Pos. Component Part no. 0041 Refrigerant line, evaporator 7840853 0042 Connection elements (set) 7840875 0043 Refrigerant line, evaporator 7840854 0044 Refrigerant line, filter dryer – non-return valve 7840855 0045 Refrigerant line 7840856 0046 Refrigerant line, refrigerant collector– tee 7840857 0048 Refrigerant line, intermediate injection...
  • Page 92 Parts lists Heat pump module (cont.) 0043 0038 0014 0026 0039 0028 0029 0030 0027 0040 0020 0028 0029 0015 0020 0016 0016 0040 0060 0037 0023 0025 0009 0024 0022 0021 0041 0010 0020 0018 0003 0012 0019 0010 0017 0011 0018...

  • Page 93: Additional Components

    Parts lists Additional components Pos. Component Part no. 0001 Axial fan 7840977 0002 Condensate drain hose 7840978 0003 Condensate drain connector 7840979 0004 Cover, condensate drain connector 7840980 0005 Diaphragm grommets (set) 7840981 0006 Brackets for condensate drain hose 7840982 0007 Insulation mat 7840983...
  • Page 94 Parts lists Additional components (cont.) 0004 0003 0001 0002 0010 0006 0005 0007 0009 0008 0011...
  • Page 95 Parts lists Air module Pos. Component Part no. 0001 Cover 7840971 0002 Top cover 7840972 0003 Air routing, top 7840973 0004 Insert for brace 7840974 0005 Flow hood 7840975 0006 Condensate drain pan 7840952 0007 Bottom air routing 7840976...
  • Page 96 Parts lists Air module (cont.) 0001 0002 0006 0003 0003 0003 0003 0004 0005 0004 0007 0007 0007...
  • Page 97 Parts lists Miscellaneous Pos. Component Part no. 0001 Installation and service instructions 5583759 0002 System examples 5583761 0003 Wiring diagram 5583762 0001 0002 0003...

  • Page 98: Electrical Equipment

    Parts lists Electrical equipment Pos. Component Serial no. (see type plate) 7525808 7525809 Part no. of individ- ual part 0001 Control panel 7843404 7843404 0002 Inverter cover panel 7843401 7843401 0007 Coding card 7841852 7841853 0008 EEV PCB [4] 7840926 7840926 0009 Inverter 7840927 7840927...
  • Page 99 Parts lists Electrical equipment (cont.) 0085 0007 0008 0066 0025 0067 0049 0030 0024 0025 0030 0036 0002 0035 0036 0035 0063 0063 0009 0063 0001 0050 0043 0084 0037 0070...

  • Page 100: Heat Pump Control Unit

    Parts lists Heat pump control unit Pos. Component Part no. 0001 Programming unit 7840789 0002 ON/OFF switch 7834771 0003 Ribbon cable AWG 28, 24 x 0.09 folded 7832891 0004 Ribbon cable, 16-pole 7834774 0005 Ribbon cable, 10-pole 7834775 0006 Power switch cable harness 7834776 0007 Connecting cable, 4-pole, length 85 mm...
  • Page 101 Parts lists Heat pump control unit (cont.) 0025 0026 0027 0016 0021 0020 0002 0018 0012 0030 0031 0022 0032 0019 0001 0023 0017 0015 0010 0013 0014 0011 0009 0008 0024 0003 0006 0004 0005 0007...

  • Page 102: Hydraulic Parameter Report

    Commissioning/service reports Hydraulic parameter report Setting and test values Setpoint Commis- Mainte- sioning nance/Serv- Testing the external heating circuit pumps Circulation pump type Circulation pump stage Overflow valve setting Commissioning, primary circuit Air intake temperature °C ("Diagnosis" Ó "System over- view") Air discharge temperature °C...
  • Page 103 Commissioning/service reports Control parameters report (cont.) System definition Parameter Code Delivered Commis- Mainte- condition sioning nance/ Service "System scheme" (see chapter 7000 "System scheme") "Temperature differential for 7003 40 (≙ 4 K) calculating the heating limit" "Temperature differential for 7004 40 (≙...
  • Page 104 Commissioning/service reports Control parameters report (cont.) Compressor Parameter Code Delivered Commis- Mainte- condition sioning nance/ Service "Enable compressor" 5000 "Evaporator temperature for 5010 250 (≙ 25 °C) defrost end" "Enable use of compressor 5012 stage" "Output compressor stage" 5030 Rated heating output accord- ing to type plate...
  • Page 105 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 106 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 107 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" "Flow temperature for external 730C 500 (≙ 50 °C) demand"...
  • Page 108 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 109 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 110 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 111 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 112 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 113: Specification

    Specification Specification Type AWO-AC 301.B11 301.B14 Heating output data to EN 14511 (A2/W35) Rated heating output 7.00 8.50 Electrical power consumption 1.79 2.18 Coefficient of performance ε (COP) 3.90 3.90 Heating output data to EN 14511 (A7/W35, 5 K spread) Rated heating output 7.21 7.97...
  • Page 114 Specification Specification (cont.) Type AWO-AC 301.B11 301.B14 Electrical values Rated voltage 3/N/PE 400 V/50 Hz Max. rated current 14.5 Starting current 10.0 Fuse protection B16A 3-pole Fan protection 6.3 A H (slow) Control circuit rated voltage 230 V/50 Hz Control circuit protection 6.3 A H (slow) Power consumption Fan at 600 rpm...

  • Page 115: Commissioning Order

    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 116: Declaration Of Conformity

    Declaration of conformity We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, declare as sole respon- sible body that the product Vitocal 300-A, type AWO-AC 301.B, including heat pump control unit Vitotronic 200, type WO1C, complies with the following standards:...
  • Page 117 Keyword index Keyword index Concrete foundation.......9, 12 4-way diverter valve......80 Condensate drain....9, 11, 12, 21 – Connection........20 Condensate drain hose....7, 21, 93 Air intake temperature......113 Condensate drain pan....88, 95 Air vent valve........80 Condenser.........90 Antifreeze........8, 13 Conditions for siting......8 Appliance MCB/fuses......83 Connecting Assembly cables..11, 12, 13, 14, 15, 23, 24, 30...
  • Page 118 Keyword index Keyword index (cont.) Electrical connections......33 Heating water flow.......7 – Heat pump........21, 23 – Connection........18 – Heat pump control unit....26 Heating water return......7 Electrical power consumption..113 – Connection........18 Electric booster heater.......75 Heat pump Electronic expansion valve..80, 90 – Cleaning.........65 Energy efficiency ratio EER.....113 –...
  • Page 119 Keyword index Keyword index (cont.) Liquid separator.........80 Low pressure sensor....80, 90 Panel..........26 LV cable........14, 15 Parameter LV lead..........13 – Immersion heater......74 LV plug..........24 Parameters – Cooling function......76 – Electric booster heater....75 Main PCB........34, 35 – External functions......72 Mains isolator.......51, 55 –...
  • Page 120 Keyword index Keyword index (cont.) Power supply....14, 51, 54, 55 Sensors – Compressor 400 V~.......53 – Checking.........81 – Heat pump control unit....53 – Curves..........81 – With power-OFF......53 Service menu Power supply utility......14 – Calling up........69 Pressure, checking......64 – Disabling.........69 Pressure switch........91 –...

  • Page 121: Keyword Index

    Keyword index Keyword index (cont.) Warranty..........66 Ventilation..........77 Water quality........62 Venting..........62 Weight..........10 Vitocom..........72 Wiring chamber........22 Wall duct........13, 14 Wall ducts..........14...
  • Page 124 Applicability Serial No.: 7525808 7525809 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:

Awo-ac 301.b11Awo-ac 301.b14

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