Viessmann VITOCAL 350-A Installation And Service Instructions Manual
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Viessmann VITOCAL 350-A Installation And Service Instructions Manual

Air/water heat pump with electric drive, 400 v~
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VIESMANN
Installation and service instructions
for contractors
Vitocal 350-A
Type AWHI 351.A
Type AWHO 351.A
Air/water heat pump with electric drive, 400 V~
VITOCAL 350-A
Please keep safe.
5692878 GB
11/2019

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  • Page 1 VIESMANN Installation and service instructions for contractors Vitocal 350-A Type AWHI 351.A Type AWHO 351.A Air/water heat pump with electric drive, 400 V~ VITOCAL 350-A Please keep safe. 5692878 GB 11/2019...
  • 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 Replace faulty components only been switched off. with genuine Viessmann spare Prior to removing covers from the parts. appliances, wait at least 4 minutes until the voltage has completely Auxiliary components, spare and dropped out.

  • Page 4: Table Of Contents

    Index Index 1. Information Disposal of packaging ................Symbols ....................Intended use ..................Product information ................System examples ................■ Spare parts lists .................. ■ 2. Installation preparations Requirements for on-site connections: Type AWHI 351.A ..... for heat pumps installed Cables/leads ..................
  • Page 5 Index Index (cont.) Power supply with power-OFF: Without on-site load disconnect ..66 ■ Power supply with power-OFF: With on-site load disconnect .... 66 ■ Phase monitor (if installed) ..............67 ■ Closing the heat pump ................69 Closing the control panel ..............70 ■...

  • Page 6: Disposal Of Packaging

    Information Disposal of packaging Please dispose of packaging waste in line with statu- tory regulations. Symbols The steps in connection with commissioning, inspec- Symbol Meaning tion and maintenance are found in the "Commission- Reference to other document containing ing, inspection and maintenance" section and identified further information as follows: Step in a diagram:...

  • Page 7: Product Information

    Product information Layout Central heating The Vitocal 350-A is an air source heat pump with out- The heat pump is able to supply up to 3 heating cir- put-dependent control. cuits: 1 heating circuit without mixer and 2 heating cir- Type AWHI 351.A is installed inside the building.

  • Page 8: Requirements For On-Site Connections: Type Awhi 351.A

    Installation preparations for heat pumps installed indoors Requirements for on-site connections: Type AWHI 351.A Fig. 1 Dimensions excluding casing panels: 790 mm x c Cable entries Condensate drain Heating water return/DHW cylinder return G 1 Heating water flow/DHW cylinder flow G 1 ½...

  • Page 9: Cables/Leads

    Installation preparations for heat pumps installed indoors Requirements for on-site connections: Type AWHI 351.A (cont.) Cables/leads Heating water buffer cylinder Secondary pump, power cable: 3 x 1.5 mm Heating circuit pump Buffer temperature sensor, sensor lead: 2 x 0.75 mm Required cable lengths: ■...
  • Page 10 Installation preparations for heat pumps installed indoors Requirements for transport and siting: Type AWHI 351.A (cont.) Please note Minimum room volume (to EN 378): Overloading the floor can result in damage to the building structure. AWHI 351.A10 13.55 m Observe the permissible floor load. Take the AWHI 351.A14 16.13 m total weight of the appliance into account.

  • Page 11: Minimum Clearances And Dimensions For Corner Installation

    Installation preparations for heat pumps installed indoors Requirements for transport and siting: Type AWHI 351.A (cont.) Minimum clearances and dimensions for corner installation Note Dim. Vitocal 350-A, type AWHI Before making the wall openings, check the struc- ■ 351.A10 351.A14 351.A20 tural analysis of the building and the wall.
  • Page 12 Wall clearances Discharge side on the left Discharge side on the right D E F Exterior rendering Dim. Vitocal 350-A, type AWHI Wall 351.A10 351.A14 351.A20 Wall duct (EPP, can be trimmed to the correct size from the outside with a saw. Observe plaster thick-...

  • Page 13: Minimum Clearances And Dimensions For Wall Installation

    Installation preparations for heat pumps installed indoors Requirements for transport and siting: Type AWHI 351.A (cont.) Minimum clearances and dimensions for wall installation Dimensions of wall openings Dim. Vitocal 350-A, type AWHI 351.A10 351.A14 351.A20 1020 1180 Fig. 4 Partition wall (if required): See table on pages...
  • Page 14 Appliance connector, air duct on the intake side Distance between wall openings inside the building (EPP) Distance between wall openings outside the build- Plaster finish/wall coating Dim. Vitocal 350-A, type AWHI 351.A10 351.A14 351.A20 1020 1180 Distances between wall openings X and Y in mm...
  • Page 15 Installation preparations for heat pumps installed indoors Requirements for transport and siting: Type AWHI 351.A (cont.) Partition wall Air intake/air discharge via weather grille Air intake/air discharge via light well ≥ 1 ≥ 1 Fig. 6 Discharge side Weather grille Partition wall Intake side Height to the top edge of the weather grille...

  • Page 16: Requirements For On-Site Connections: Type Awho 351.A

    Installation preparations for heat pumps installed outdoors Requirements for on-site connections: Type AWHO 351.A Fig. 8 Condensate drain Heating water return G 1 (female thread): ¼ Heating water flow G 1 (female thread): Adaptor G 1 to Rp 1 supplied ¼...

  • Page 17: Requirements For Transport And Siting: Type Awho 351.A

    Installation preparations for heat pumps installed outdoors Requirements for transport and siting: Type AWHO 351.A Transport The appliance can be lifted onto the foundations with, Please note for example, a crane and on-site equipment. Impacts, compression and tensile loads can cause damage to the outside panels of the Please note appliance.

  • Page 18: Minimum Clearances

    Provide an adequately sized recess (see diagram Weight ■ below) in the foundations to permit the lines (heating Vitocal 350-A, type Weight (incl. silenc- water flow and return, cables and condensate drain) er hoods) to be brought into the heat pump from below.
  • Page 19 Installation preparations for heat pumps installed outdoors Foundations: Type AWHO 351.A (cont.) Plan view Fig. 10 Heat pump Soft ground, gravel or crushed stone Concrete foundations (300 mm thick) consisting of: Routing direction of pipe from hydraulic connection ■ Concrete slab C25/30, BSt 500 S and M set: Towards the front ■...
  • Page 20 Installation preparations for heat pumps installed outdoors Foundations: Type AWHO 351.A (cont.) Note Dim. Vitocal 350-A, type AWHO ■ Before laying the concrete foundations, trim the 351.A10 351.A14 351.A20 hydraulic connection pipes (heating water flow and 1080 1230 1400 return), install the connection fittings and provide frost protection.

  • Page 21: Cables/Leads And Hydraulic Lines: Type Awho 351.A

    Installation preparations for heat pumps installed outdoors Cables/leads and hydraulic lines: Type AWHO 351.A Laying cables/lines underground and routing in through the exterior wall Fig. 12 Concrete foundation (300 mm thick) consisting of: 2 connecting cables inside DN 100 KG conduit (on ■...
  • Page 22 KG conduit. mal insulation. ■ Cable length required in the heat pump from top edge of foundations: Min. 2.6 m. Vitocal 350-A, type AWHO 351.A20 ■ Flow/return lines: 2 x DN 40 Connecting cables Adaptors: DN 40 to R 1 ■...

  • Page 23: Required Cables And Hydraulic Lines

    Installation preparations for heat pumps installed outdoors Cables/leads and hydraulic lines: Type AWHO 351.A (cont.) Required cables and hydraulic lines Fig. 13 Heat pump Circulation pump for cylinder heating or 3-way Extra low voltage (ELV) lead, pre-manufactured diverter valve, power cable (3 x 1.5 mm Control cable, pre-manufactured DHW circulation pump, power cable (3 x 1.5 mm Flexible power cable for special tariff/load current:...

  • Page 24: Removing The Transport Brackets

    Installation sequence Removing the transport brackets Please note If transport brackets are not removed, they cause vibrations and excessive noise. Remove the transport brackets and replace the screws. Fig. 14...

  • Page 25: Type Awhi 351.A Only: Fitting The Supplied Floor Mat

    Installation sequence Type AWHI 351.A only: Fitting the supplied floor mat Fig. 15...

  • Page 26: Fitting The Outer Panels

    Installation sequence Fitting the outer panels Installation using type AWHI 351.A as an example. Fig. 16 4. Only required for type AWHI 351.A...
  • Page 27 Installation sequence Fitting the outer panels (cont.) Installation of side panels with air discharge on the l.h. side (delivered condition for type AWHI 351.A) Fig. 17 5. Only required for type AWHI 351.A...
  • Page 28 Installation sequence Fitting the outer panels (cont.) Installation of side panels when air discharge is on the right Fig. 18 Note To facilitate installation, apply a soapy solution to the edges of the side panel insulation. 5. Only required for type AWHI 351.A...
  • Page 29 Installation sequence Fitting the outer panels (cont.) Fig. 19...
  • Page 30 Installation sequence Fitting the outer panels (cont.) Fig. 20...

  • Page 31: Type Awho 351.A Only: Fitting The Silencer Hoods

    Installation sequence Type AWHO 351.A only: Fitting the silencer hoods Fig. 21...

  • Page 32: Fitting The Top Panel

    Installation sequence Fitting the top panel Type AWHI 351.A Type AWHO 351.A Fig. 23 Fig. 22 Siting the heat pump Only type AWHI 351.A: Connecting the air circuit (primary circuit) See also installation information for siting on page 9 1. Centre the wall outlets in the wall cut-outs and onwards.
  • Page 33 Installation sequence Siting the heat pump (cont.) Fig. 24 Heat pump installed outdoors ■ Site the heat pump according to the details on page 17. ■ Secure the heat pump to the foundations.

  • Page 34: Making The Hydraulic Connections

    Installation sequence Siting the heat pump (cont.) Fig. 25 If the adjustable feet are used to compensate for an uneven floor (max. 10 mm), distribute the pressure load on the feet evenly. Making the hydraulic connections Please note Please note Hydraulic connections subjected to mechanical Leaking hydraulic connections lead to appliance loads lead to leaks, vibrations and appliance...

  • Page 35: Heat Pump Installed Indoors

    Installation sequence Making the hydraulic connections (cont.) Information on the condensate drain ■ Subject to temperature and relative humidity, the vol- ume of condensate accumulating from the air can be as high as 20 litres/h. ■ During the defrosting process, the amount of con- densate can be as high as 20 litres within 5 min.

  • Page 36: Heat Pump Installed Outdoors

    Installation sequence Making the hydraulic connections (cont.) Heat pump installed outdoors 1. Cut suitable openings on site in sealing mat Note If an instantaneous heating water heater is installed, fit hydraulic lines and condensate drain the flow temperature sensor for the secondary circuit in the heating water flow downstream of the instantane- ous heating water heater.

  • Page 37: Electrical Connections: Control Panel

    Installation sequence Electrical connections: Control panel Danger Danger Damaged wiring insulation wiring can lead to Incorrect wiring can lead to serious injury from serious injury from electrical current and result in electrical current and result in appliance dam- appliance damage. age.

  • Page 38: Overview Of Electrical Connections In The Control Panel

    Installation sequence Electrical connections: Control panel (cont.) Overview of electrical connections in the control panel Type AWHI/AWHO 351.A10, AWHI/AWHO 351.A14 Fig. 30 Type AWHI/AWHO 351.A20 Fig. 31 Fan fuse 6.3 A (slow) Mains terminals (400 V~) for compressor and fan Phase monitor with contact shield and power-OFF seal if required Compressor contactor...

  • Page 39: Routing Cables/Leads To The Control Panel

    Installation sequence Electrical connections: Control panel (cont.) Routing cables/leads to the control panel Danger Cable entry from the right Damaged cable insulation can cause injury and damage to the appliance. Route cables so that they cannot touch very hot, vibrating or sharp-edged components. Internal heat pump ¨...
  • Page 40 Installation sequence Electrical connections: Control panel (cont.) External heat pump 1. Internal heat pump: Route the 230 V cables through one cable entry, and the LV lead through the other cable entry in the l.h. or r.h. side panel. External heat pump: Cut one entry in the sealing mat for the 230 V cables and a second entry for the LV lead.

  • Page 41: Attaching The Connecting Cables From The Control Unit In The Control Panel

    Installation sequence Electrical connections: Control panel (cont.) Attaching the connecting cables from the control unit in the control panel Fig. 35...
  • Page 42 Installation sequence Electrical connections: Control panel (cont.) X14.6 Fig. 36...
  • Page 43 Installation sequence Electrical connections: Control panel (cont.) < 42 V 230 V~ X14.6 Fig. 37 Cover panel Bracket Control cable 230 V~ Cable ties Extra low voltage (ELV) lead < 42 V...

  • Page 44: Electrical Connections: Heat Pump Control Unit

    Installation sequence Electrical connections: Heat pump control unit Fitting the heat pump control unit and inserting cables Wall mounting base and casing base, fitting Fig. 38...
  • Page 45 Installation sequence Electrical connections: Heat pump control unit (cont.) Fitting the casing front Fig. 39 Cross connect PCB Casing front ON/OFF switch plug-in connection Controller and sensor PCB...
  • Page 46 Installation sequence Electrical connections: Heat pump control unit (cont.) Heat pump control unit, open Fig. 40...
  • Page 47 Installation sequence Electrical connections: Heat pump control unit (cont.) Cables, inserting and applying strain relief Fig. 41 Cables with moulded strain relief On-site cables/leads...

  • Page 48: Attaching Cables From The Control Panel In The Control Unit

    Installation sequence Electrical connections: Heat pump control unit (cont.) Attaching cables from the control panel in the control unit Fig. 42 Cross connect PCB Connecting cable (LV lead < 42 V) Controller and sensor PCB Connecting cable (control cable 230 V~) Adjusting the heat pump control unit (red cores) The secondary pump and/or the instantaneous heating The red cores connect the following terminals: See...
  • Page 49 Installation sequence Electrical connections: Heat pump control unit (cont.) Fig. 43 Type AWHO 351.A Type AWHI 351.A: Secondary pump outside the heat pump Fig. 44 Fig. 45 Instantaneous heating water heater (accessories) Instantaneous heating water heater (accessories) Red wires to be removed (see fig. 43 on page 48) X6.6 211.2 Red wires to be removed (see fig.
  • Page 50 Installation sequence Electrical connections: Heat pump control unit (cont.) Type AWHI 351.A: Secondary pump inside the heat The following components are connected in the heat pump pump control unit (see page 51 onwards): ■ Circulation pump for cylinder heating The following components are connected in the heat pump control panel (see separate installation instruc- tions and page 37 onwards): On-site secondary pump: See the following chapter...

  • Page 51: Inserting The Coding Card

    Installation sequence Electrical connections: Heat pump control unit (cont.) Inserting the coding card Only insert the coding card that comes supplied with the heat pump. Fig. 49 Coding card Controller and sensor PCB Overview of electrical connections Danger Danger Damaged wiring insulation wiring can lead to Incorrect wiring can lead to serious injury from serious injury from electrical current and result in electrical current and result in appliance dam-...

  • Page 52: Main Pcb (Operational Components 230 V~)

    Installation sequence Electrical connections: Heat pump control unit (cont.) sYA sYS Fig. 50 Cross connect PCB: See page 58. Expansion PCB: See page 55. F1 Fuse 6.3 A (slow) Controller and sensor PCB: See page 58. X6 Red wires for matching the heat pump control unit to the system version (see page 48) Main PCB: See page 52.
  • Page 53 Installation sequence Electrical connections: Heat pump control unit (cont.) Plug Terminals Function Explanation 211.1 Connection values: Output: 200 W ■ Voltage: 230 V~ ■ Max. switching current: 4(2) A ■ 211.2 Secondary pump In systems without a heating water buffer cylinder, no ■...
  • Page 54 Installation sequence Electrical connections: Heat pump control unit (cont.) Connecting a temperature limiter as a maximum temperature limiter for underfloor heating Connecting a general temperature limiter Connecting the temperature limiter, part no. 7151728, X2.N 7151729 X2.N sÖ Fig. 51 Fig. 52 Connection to con- Circulation pump...

  • Page 55: Expansion Pcb On Main Pcb (Operational Components 230 V~)

    Installation sequence Electrical connections: Heat pump control unit (cont.) Expansion PCB on main PCB (operational components 230 V~) Information regarding the connection values Set the required parameters during commissioning; The specified output is the recommended connected see from page 78. ■...
  • Page 56 Installation sequence Electrical connections: Heat pump control unit (cont.) High limit safety cut-out for heat pump in conjunc- tion with external heat generator X3.1 222.3 222.4 X2.N Fig. 54 Terminals on extension PCB Connect jumper across X3.1 and 222.3. Connection on external heat generator to terminals for "External demand"...
  • Page 57 Installation sequence Electrical connections: Heat pump control unit (cont.) Plug Terminals Function Explanation 224.4 Instantaneous heating water heater Connection values: switching, stage 2 Output: 10 W ■ Voltage: 230 V~ ■ Max. switching current: 4(2) A ■ See installation instructions for "instantaneous heating water heater"...

  • Page 58: Cross Connect Pcb

    Installation sequence Electrical connections: Heat pump control unit (cont.) Plug Terminals Function Explanation 225.1 Heating circuit pump of the heating Connect a temperature limiter to restrict the maximum circuit with mixer M2/HC2 temperature for underfloor heating circuits (if installed) in series. Connection values: Output: 100 W ■...
  • Page 59 Installation sequence Electrical connections: Heat pump control unit (cont.) Terminals Function Explanation X3.2 "External blocking" signal (external blocking Requires floating N/O contact: X3.14 of compressor and pumps, mixer in control Closed: Blocking enabled ■ or at external mode or CLOSE) Open: No blocking ■...

  • Page 60: Controller And Sensor Pcb (Sensors)

    Installation sequence Electrical connections: Heat pump control unit (cont.) Terminals Function Explanation X3.10 Fault message, lag heat pump in a cas- Requires floating contact: X3.11 cade Closed: No faults ■ Open: Fault ■ Jumper Breaking capacity 230 V~, 0.15 A ■...
  • Page 61 Installation sequence Electrical connections: Heat pump control unit (cont.) Plug Sensors/terminals Type (PTC) System flow temperature sensor (with sensor well, downstream of Pt500 the heating water buffer cylinder) Boiler water temperature sensor, external heat generator Pt500 (X6.8/X6.9) KM-BUS Wires interchangeable; for several appliances, use the KM-BUS distributor (accessories).
  • Page 62 Installation sequence Electrical connections: Heat pump control unit (cont.) fÖ gÖ Fig. 57 Connection to controller and sensor PCB Fuses and contactor for circulation pump for swim- External H1 extension ming pool heating (accessories) Temperature controller for regulating swimming Circulation pump for swimming pool heating pool temperature (floating contact, 230 V~, 0.1 A, (accessories) accessories)
  • Page 63 Installation sequence Electrical connections: Heat pump control unit (cont.) X3.10 X3.11 230V 223.1 fÖ 223.2 230V 223.1 223.2 230V sÖ 223.1 223.2 Fig. 58 Heat pump 1 (lead heat pump) Lag heat pump 2 KM BUS Connection at contact for "External demand " External extension H1 Floating contact "External demand "...

  • Page 64: Power Supply

    Installation sequence Power supply Isolators for non-earthed conductors The assignment of the power-OFF (for compressor ■ ■ Install an isolator in the power cable to provide and/or instantaneous heating water heater) is made omnipolar separation from the mains for all active via the type of connection and by setting parameters conductors, corresponding to overvoltage category in the heat pump control unit.

  • Page 65: Heat Pump Control Unit Power Supply 230 V

    Installation sequence Power supply (cont.) Information regarding the compressor power sup- ■ Please note An incorrect phase sequence can cause dam- age to the appliance. Make the compressor power supply only in the phase sequence specified (see terminals) with a clockwise rotating field. ■...

  • Page 66: Power Supply With Power-Off: Without On-Site Load Disconnect

    Installation sequence Power supply (cont.) 5. If a seal is required (e.g. when using an economy On-site fuse protection in accordance with the com- ■ tariff with power-OFF), pass the seal wire through pressor rating (see specification). the holes drilled in both studs. Note The upstream MCBs must have B characteristics.

  • Page 67: Phase Monitor (If Installed)

    Installation sequence Power supply (cont.) X3.7 X3.6 ≈ Fig. 62 Diagram excluding fuses and RCD Heat pump control unit Instantaneous heating water heater Compressor Economy tariff meter Feed: TNC system Backup fuse, ripple control receiver Ripple control receiver (contact open: Power-OFF enabled) Premium tariff meter Mains isolator...
  • Page 68 Installation sequence Power supply (cont.) Version 1 Version 2 N 11 21 <>U <>U L1 L2 L3 12 14 22 24 Fig. 64 LEDs explained in Fig. 64 Fig. 63 Voltage "U": ■ Illuminates green if voltage is present. Over/undervoltage in % Relay "R": Phase asymmetry in % ■...

  • Page 69: Closing The Heat Pump

    Installation sequence Power supply (cont.) Version 3 LEDs explained in Fig. 65 Voltage "Un": ■ Illuminates green if voltage is present. Relay "R": ■ Illuminates yellow if the phase sequence is cor- rect. L1, L2, L3 Does not illuminate if the phase sequence is ■...

  • Page 70: Closing The Control Panel

    Installation sequence Closing the heat pump (cont.) Closing the control panel Fig. 66 Holes for type AWHI/AWHO 351.A120 Holes for type AWHI/AWHO 351.A114 Holes for type AWHI/AWHO 351.A110...

  • Page 71: Fitting The Front Panel

    Installation sequence Closing the heat pump (cont.) Fitting the front panel Fig. 67...

  • Page 72: 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..................... 73 • 2. Compiling reports......................74 • • 3. Checking the refrigerant circuit for leaks................ 74 •...

  • Page 73: Opening The Heat Pump

    Commissioning, inspection, maintenance Opening the heat pump Danger Please note Contact with live components can lead to seri- Refrigerant can escape when working on the ous injury from electric current. refrigerant circuit. ■ Do not touch the connections in the control Work on the refrigerant circuit must only be car- panel (see chapter "Overview of connections ried out by a certified contractor (in accordance...

  • Page 74: Compiling Reports

    Commissioning, inspection, maintenance Opening the heat pump (cont.) Pivoting control panel to the side Fig. 68 Compiling reports Enter the readings taken during commissioning (described hereafter) into the reports on page 87 onwards. Checking the refrigerant circuit for leaks Danger Danger The refrigerant is a non-poisonous gas that dis- Direct contact with refrigerant can be harmful to...

  • Page 75: Filling And Venting On The Secondary Side

    Commissioning, inspection, maintenance Checking the refrigerant circuit for leaks (cont.) Please note Check the floor area, valves and all visible solder joints Refrigerant can escape when working on the for traces of oil. refrigerant circuit. Work on the refrigerant circuit must only be car- Note ried out by a certified contractor (in accordance Traces of oil indicate a leak in the refrigerant circuit.

  • Page 76: Checking The Expansion Vessel And Heating Circuit Pressure

    Commissioning, inspection, maintenance Filling and venting on the secondary side (cont.) 3. Fill the secondary circuit via the on-site BDF valve 6. Close drain & fill valve. (flush) and vent the circuit. 7. Connect on-site hose to manual air vent valve 4.

  • Page 77: Checking The Electrical Connections For Firm Seating

    Commissioning, inspection, maintenance Cleaning the interior (cont.) Fig. 70 Condensate drain Interior 4. Clean the interior with a vacuum cleaner first and 6. Assembly: Steps 1 to 3 in reverse order then with a hand shower. If necessary, wipe dry with a soft cloth.

  • Page 78: Commissioning The System

    2. Measure the temperature of the compressor casing exterior while it is in operation. The compressor must not develop a layer of ice on its outside, and the casing must not get hotter than C (if necessary, check with Viessmann techni- ° cal service). Commissioning the system...
  • Page 79 Commissioning, inspection, maintenance Commissioning the system (cont.) Language Date/Time Time Date Start commissioning? Coding Parameter group Parameters level 1 select Temperature Sensor values sensors display Signal inputs Signal inputs display Actuator test Actuator test carry out Subscriber check (LON) Subscriber check carry out Function check Function...
  • Page 80 Commissioning, inspection, maintenance Commissioning the system (cont.) 2. "Service" 5. Select parameter: "System scheme 7000" 3. Select "Coding level 1". 6. Set a system scheme: e.g. "6" 4. Select parameter group: "System definition" Required parameters for components connected on site Detailed explanation of parameters Overview of possible system schemes "Vitotronic 200"...
  • Page 81 Commissioning, inspection, maintenance Commissioning the system (cont.) Pump/component Parameter Setting Heating circuit pump and mixer M3 "System definition" With heating circuit with mixer Ó (controlled via mixer extension kit) "System scheme 7000" Note Set rotary switch S1 in the ex- tension kit to "2"...
  • Page 82 Commissioning, inspection, maintenance Commissioning the system (cont.) External functions External function Parameter Setting External demand If applicable "Internal hydraulics" Set flow temperature for ex- Ó "Flow temperature for external de- ternal demand mand 730C" External starting of the compressor; "System definition" "0"...
  • Page 83 Commissioning, inspection, maintenance Commissioning the system (cont.) Enable external heat source for DHW heating Parameter Setting "External heat source" Ó "Enable external heat source for DHW heating 7B0D" "1" Parameters for immersion heater Parameters Setting "DHW" Ó "Enable electric heaters for DHW heating 6015" "1"...

  • Page 84: Instructing The System User

    Commissioning, inspection, maintenance Commissioning the system (cont.) Parameter Setting Lead heat pump Lag heat pump "System definition" "0" to "255" – Ó "Output lag heat pump 700B" "System definition" "0" to "31" "0" to "31" Ó "Use of heat pump in cascade 700C" ≙...

  • Page 85: Troubleshooting Repairs

    Troubleshooting Repairs Overview of sensors, drain and air vent valves Fig. 73 Refrigerant receiver Safety high pressure switch Drain valve Electronic expansion valve (EEV) Secondary circuit return temperature sensor Manual air vent valve Thermostatic expansion valve 4-way diverter valve Temperature sensor EVI High pressure sensor Solenoid valve Hot gas temperature sensor...

  • Page 86: Check Fuses

    Troubleshooting Repairs (cont.) Sensor Test element Outside temperature sensor (F0) Ni500 ■ Flow temperature sensor, heating circuits M2 (F12) ■ System flow temperature sensor (F13) Pt500 ■ Buffer temperature sensor (F4) ■ Cylinder temperature sensor, top/bottom (F6/F7) ■ Flow/return temperature sensor, secondary circuit (F8/F9) ■...

  • Page 87: Commissioning/Service Hydraulic Parameter Report

    Commissioning/service reports Hydraulic parameter report Settings and test values Set value Commissioning Maintenance/ service Checking 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 88 Commissioning/service reports Control parameter report (cont.) Parameter Code Factory setting Commission- Operating status for external changeover 7012 Effect of external blocking on pumps/compressor 701A Duration of external changeover 7013 Effect of external demand on heat pump/heating cir- 7014 cuits Effect of ext. blocking on heat pump/heating circuits 7015 Vitocom 100 7017...
  • Page 89 Commissioning/service reports Control parameter report (cont.) Electric booster heater Parameter Code Factory setting Commission- Enable instantaneous heating water heater 7900 Enable instant. heating water heater for central heating 7902 Max. output instantaneous heating water heater 7907 Output for instant. heating water heater at power-OFF 790A ≙...
  • Page 90 Commissioning/service reports Control parameter report (cont.) Parameter Code Factory setting Commission- Influence room temperature hook-up 300A Room temperature hook-up 300B ≙ Max. flow temperature heating circuit 300E 400 ( 40 °C) ≙ Room temperature in party mode 3022 160 ( 16 °C) Heating circuit 3 Parameter...

  • Page 91: Specification Specification

    Specification Specification Heat pumps installed indoors Type AWHI 351.A10 351.A14 351.A20 Siting Indoor Indoor Indoor Heating performance data to EN 14511 (A2/W35) For secondary circuit flow rate 2400 3300 3700 ■ For pressure drop mbar ■ Rated heating output 10.60 14.50 18.50 Electrical power consumption...
  • Page 92 Specification Specification (cont.) Type AWHI 351.A10 351.A14 351.A20 Siting Indoor Indoor Indoor Refrigerant circuit Refrigerant R407C R407C R407C Safety assembly ■ Refrigerant charge ■ Global warming potential (GWP) 1774 1774 1774 ■ equivalent ■ Compressor Type Hermetically sealed scroll compressor with injection Oil in compressor Type Emkarate RL 32 3MAF...
  • Page 93 Specification Specification (cont.) Heat pumps installed outdoors Type AWHO 351.A10 351.A14 351.A20 Siting Outdoor Outdoor Outdoor Heating performance data to EN 14511 (A2/W35) For secondary circuit flow rate 2400 3300 3700 ■ For pressure drop mbar ■ Rated heating output 10.60 14.50 18.50...
  • Page 94 Specification Specification (cont.) Type AWHO 351.A10 351.A14 351.A20 Siting Outdoor Outdoor Outdoor Refrigerant circuit Refrigerant R407C R407C R407C Refrigerant charge ■ Global warming potential (GWP) 1774 1774 1774 ■ equivalent ■ Compressor Type Hermetically sealed scroll compressor with injection Oil in compressor Type Emkarate RL 32 3MAF ■...

  • Page 95: Sound Transmission Data

    Specification Sound transmission data Type AWHI 351.A (heat pumps installed indoors, 400 V appliances) Type AWHI 351.A10 351.A14 351.A20 Siting Indoors Indoors Indoors Sound power level L A-weighted total sound power level in heating mode at ± /W35 ± , corner installation Inside installation room Fan stage 1 dB(A)

  • Page 96: Appendix Heat Pump Commissioning Order

    Appendix Heat pump commissioning order Please send the following order, together with the enclosed system scheme, by fax to your local Viessmann sales office. We would ask that a competent employee of yours be present during commissioning. System details: Client...

  • Page 97: Certificates Declaration Of Conformity

    The product characteristics determined as system values for the product Vitocal 350-A (see technical guide) can be utilised to assess the energy consumption of heating and ventilation systems to DIN V 4701-10 specified...

  • Page 98: Keyword Index

    Keyword index Keyword index Adjustable feet............34 DHW circulation pump........... 9, 23 Ambient temperatures..........9, 17 Diaphragm grommets..........34 Antifreeze..............22 Dimensions..........8, 16, 92, 94 Appliance connector..........12, 14 – AWHI 351.A...............8 Appliance fuse............86 – AWHO 351.A............16 Drain & fill facility..........21, 22 Drain and air vent valves Buffer temperature sensor...........
  • Page 99 Keyword index Keyword index (cont.) Heat pump, draining...........85 Operational components..........55 Heat pump control unit..........22 Output lag heat pump...........83, 84 – Fitting..............44 Outside temperature sensor........9, 23 – Open............... 46 Overvoltage..............68 High limit safety cut-out..........56 Hose outlets............... 34 Hydraulic connecting lines......... 21 Panel................
  • Page 100 – For wall installation..........13 System pressure, checking........76 Warranty..............78 System scheme............83 Water quality.............. 75 – Options (table)............80 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...

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