Related Manuals for Viessmann Vitocal 350-A AWHO 351.A Series
Summary of Contents for Viessmann Vitocal 350-A AWHO 351.A Series
- 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 11/2017...
- Page 2 Prior to removing covers from the appliances, Replace faulty components only with genuine wait at least 4 minutes until the voltage has Viessmann spare parts. completely dropped out. Safeguard the system against reconnection. ■ Wear suitable personal protective equipment when ■...
- Page 3 Installing non-authorised components and making non-approved modifications or con- versions can compromise safety and may inva- lidate our warranty. For replacements, use only original spare parts supplied or approved by Viessmann.
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Page 4: Table Of Contents
Index Index 1. Information Disposal of packaging ................Symbols ....................Intended use ..................Product information ................2. Preparing for installation General information on the electrical connection ........Internal heat pump ................. Installation room requirements ............■ Positioning ..................■ Connections ..................12 ■... - Page 5 Index Index (cont.) 6. Parts list type AWHI 351.A Overview of assemblies ................. 83 Casing ....................84 Front panels ..................84 ■ Side panels ..................86 ■ Miscellaneous ..................88 ■ Air module ....................90 Heat pump control unit ................92 Electrical equipment ................
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Page 6: Disposal Of Packaging
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 7: Product Information
The remaining components are instal- control unit. led outside the appliance. On type AWHO, the hydraulic components for supply- System examples ing the secondary circuit are installed outside the heat pump. For available system examples, see www.viessmann- schemes.com... -
Page 8: General Information On The Electrical Connection
Preparing for installation General information on the electrical connection Connecting control panel cables heat pump ■ – control unit: Observe information from page 34. ■ Electrical connection of system components (pumps, mixers, valves, message facilities, contac- tors, function extensions, sensors etc.): Connections are made in the heat pump control unit. -
Page 9: Positioning
Preparing for installation Internal heat pump (cont.) Positioning Minimum clearances and dimensions when posi- Wall duct, discharge side tioning in a corner Wall duct, intake side Plaster finish Note Top edge, finished floor Before making the wall openings, check the structural analysis of the building and the wall. - Page 10 Preparing for installation Internal heat pump (cont.) Discharge side on the left Discharge side on the right D E F Exterior rendering Minimum clearances and dimensions for wall Wall installation Wall duct (EPP, can be trimmed to the correct size from the outside with a saw.
- Page 11 Preparing for installation Internal heat pump (cont.) N x 350 Fig. 3 Dimensions e and g: See page 10. Exterior rendering Hydraulic and condensate connections Wall Heat pump Wall duct (EPP, can be trimmed to the correct size Appliance connector, air duct on the discharge from the outside with a saw.
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Page 12: Connections
Preparing for installation Internal heat pump (cont.) Connections Fig. 4 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 ½ (female thread) (female thread) Notes Dimensions in mm... -
Page 13: External Heat Pump
Preparing for installation Internal heat pump (cont.) Cables/leads Control unit, flexible power cable: 5 x 1.5 mm with power-OFF contact power cable, floating Electricity meter/mains DHW cylinder Cylinder temperature sensor, sensor lead: 2 x 0.75 mm DHW circulation pump, power cable: 3 x 1.5 mm Flexible power cable for instantaneous heating water heater (accessories): 400 V: 5 x 2.5 mm... -
Page 14: Positioning
Preparing for installation External heat pump (cont.) Positioning Minimum clearances Drain all condensate derived from the air (subject to ■ temperature and relative humidity up to 20 l/h) via a DN 40 drain pipe, which should be protected from frost and provide a steady fall. If possible connect the condensate drain to a drain- age or sewer system. - Page 15 Preparing for installation External heat pump (cont.) Foundation dimensions: Plan view Fig. 7 Heat pump Upstream direction of pipe from hydraulic connec- Concrete foundation (300 mm thick) consisting of: tion set ■ Concrete slab C25/30, BSt 500 S and M Heat pump power cable ■...
- Page 16 Preparing for installation External heat pump (cont.) Heat pump Dimension Vitocal 350-A, type AWHO Concrete foundation (300 mm thick) consisting of: 351.A10 351.A14 351.A20 ■ Concrete slab C25/30, BSt 500 S and M 1080 1230 1400 ■ Reinforcement with all-round Q 257 A wire mesh KG conduit DN 100 for connecting cables to the heat pump control unit (on site): Control cable 230 V~, LV lead <...
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Page 17: Connections
Preparing for installation External heat pump (cont.) Connections Fig. 9 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 ¼ Adaptor G 1 to Rp 1 supplied Silencer hoods ¼... - Page 18 Preparing for installation External heat pump (cont.) Cables/leads and hydraulic lines Laying the lines underground and routing in through the exterior wall Fig. 10 Concrete foundation (300 mm thick) consisting of: Underground channel ■ Concrete slab C25/30, BSt 500 S and M Wall duct with expanding mortar (on site) for ■...
- Page 19 Ready-mixed solutions ensure an even distribution of concentrate. Recommendation: Use Viessmann "Tyfocor" heat transfer medium which is based on ethylene glycol (ready-mixed down to 19 °C, light green).
- Page 20 Preparing for installation External heat pump (cont.) Wiring diagram Fig. 11 Standard system example Heat pump Circulation pump for cylinder heating or 3-way LV 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: Heating circuit pump, power cable (3 x 1.5 mm According to compressor output, cable length and...
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Page 21: Removing The Transport Brackets
Installation sequence Removing the transport brackets Please note Please note Prevent damage to the appliance during han- If transport brackets are not removed, they dling. cause vibrations and excessive noise. Never apply loads/weight to the top, front or Remove the transport brackets and replace the side panels of the appliance. -
Page 22: Type Awhi 351.A Only: Fitting The Supplied Floor Mat
Installation sequence Type AWHI 351.A only: Fitting the supplied floor mat Fig. 13... -
Page 23: Fitting The Outer Panels
Installation sequence Fitting the outer panels Installation using type AWHI 351.A as an example. Fig. 14 4. Required only for type AWHI 351.A. - Page 24 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. 15 5. Required only for type AWHI 351.A.
- Page 25 Installation sequence Fitting the outer panels (cont.) Installation of side panels when air discharge is on the right Fig. 16 Note To facilitate installation, apply a soapy solution to the edges of the side panel insulation. 5. Required only for type AWHI 351.A.
- Page 26 Installation sequence Fitting the outer panels (cont.) Fig. 17...
- Page 27 Installation sequence Fitting the outer panels (cont.) Fig. 18...
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Page 28: Type Awho 351.A Only: Fitting The Silencer Hoods
Installation sequence Type AWHO 351.A only: Fitting the silencer hoods Fig. 19... -
Page 29: Fitting The Top Panel
Installation sequence Fitting the top panel Type AWHI 351.A Type AWHO 351.A Fig. 21 Fig. 20 Siting the heat pump Connecting the air circuit (primary circuit) (only for type AWHI 351.A) See also installation information from page 9. 2. Finish off the external part of intake and discharge side with weather grilles. - Page 30 Installation sequence Siting the heat pump (cont.) Type AWHI 351.A: Fig. 22...
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Page 31: Hydraulic Connections
Installation sequence Siting the heat pump (cont.) Type AWHO 351.A: Fig. 23 Hydraulic connections Note ■ In underfloor heating circuits, integrate a temperature limiter on site for limiting the maximum temperature of underfloor heating systems. ■ To ensure the minimum flow rate (see specification), fit an overflow valve in every heating circuit (except single pipe heating circuits). -
Page 32: Type Awhi 351.A
Installation sequence 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 33: Type Awho 351.A
Installation sequence Hydraulic connections (cont.) Type AWHO 351.A Fig. 25 1. Cut suitable openings on site in sealing mat Note hydraulic lines and condensate drain If an instantaneous heating water heater is installed, fit the flow temperature sensor for the secondary circuit in 4. -
Page 34: Control Panel Electrical Connections
Installation sequence Hydraulic connections (cont.) 4. Connect the lead to the heat pump control unit to the controller and sensor PCB inside the heat pump control unit at connection F8. If necessary, extend the lead to the heat pump control unit on site. -
Page 35: Overview Of Electrical Connections In The Control Panel
Installation sequence Control panel electrical connections (cont.) Overview of electrical connections in the control panel Type AWHI/AWHO 351.A10, AWHI/AWHO 351.A14 Fig. 28 Type AWHI/AWHO 351.A20 Fig. 29 Fan fuse 6.3 A (slow) Internal heat pump: Phase monitor Switching module, instantaneous heating water Compressor contactor heater (accessories) Distributor PCB... -
Page 36: Routing Cables/Leads To The Control Panel
Installation sequence Control panel electrical connections (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 37 Installation sequence Control panel electrical connections (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.
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Page 38: Attaching The Connecting Cables From The Control Unit In The Control Panel
Installation sequence Control panel electrical connections (cont.) Attaching the connecting cables from the control unit in the control panel < 42 V 230 V~ X14.6 Fig. 33 1. Remove cover 6. Affix the individual cores of connecting cable (control cable 230 V~) to terminal X14.6 for the PE 2. -
Page 39: Heat Pump Control Unit Electrical Connections
Installation sequence Heat pump control unit electrical connections Fitting the heat pump control unit and inserting cables Wall mounting base and casing base, fitting Fig. 34... - Page 40 Installation sequence Heat pump control unit electrical connections (cont.) Fitting the casing front Fig. 35 Cross connect PCB Casing front ON/OFF switch plug-in connection Controller and sensor PCB...
- Page 41 Installation sequence Heat pump control unit electrical connections (cont.) Heat pump control unit, open Fig. 36...
- Page 42 Installation sequence Heat pump control unit electrical connections (cont.) Cables, inserting and applying strain relief Fig. 37 Cables with moulded strain relief On-site cables/leads...
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Page 43: Attaching Cables From The Control Panel In The Control Unit
Installation sequence Heat pump control unit electrical connections (cont.) Attaching cables from the control panel in the control unit Fig. 38 Cross connect PCB Connecting cable (LV lead < 42 V) Controller and sensor PCB Connecting cable (control cable 230 V~) Adapting the heat pump control unit The secondary pump and/or the instantaneous heating The circulation pump for cylinder heating can only be... - Page 44 Installation sequence Heat pump control unit electrical connections (cont.) Subject to system version, one or more of the The following components are connected up in the 4 red wires will need to be removed in accordance with heat pump control panel (see separate installation the following details.
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Page 45: Inserting The Coding Card
Installation sequence Heat pump control unit electrical connections (cont.) Fig. 44 Inserting the coding card Only insert the coding card that comes supplied with the heat pump. Fig. 45 Coding card Controller and sensor PCB... -
Page 46: Overview Of Electrical Connections
Installation sequence Heat pump control unit electrical connections (cont.) Overview of electrical connections Danger Incorrect wiring can lead to serious injury from electrical current and result in appliance dam- age. Take the following measures to prevent wires drifting into the adjacent voltage area: Route LV leads <... -
Page 47: Main Pcb (Operational Components 230 V~)
Installation sequence Heat pump control unit electrical connections (cont.) 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 73. ■ load. ■ The total output of all components connected directly to the heat pump control unit (e.g. - Page 48 Installation sequence Heat pump control unit electrical connections (cont.) Plug Terminals Function Explanation 212.2 Heating circuit pump for heating cir- If a heating water buffer cylinder is installed, this ■ cuit without mixer A1/HC1 pump will be installed in addition to the secondary pump.
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Page 49: Expansion Pcb On Main Pcb (Operational Components 230 V~)
Installation sequence Heat pump control unit electrical connections (cont.) Connecting the temperature limiter, part no. 7151 728, 7151 729 to the mixer extension kit sÖ sÖ Fig. 49 Connect plug sÖ to the extension kit. Temperature limiter Heating circuit pump M3/HC3 Expansion PCB on main PCB (operational components 230 V~) Information regarding the connection values Set the required parameters during commissioning;... - Page 50 Installation sequence Heat pump control unit electrical connections (cont.) Plug Terminals Function Explanation 222.3 Control of external heat generators Floating contact 222.4 and 1 high limit safety cut-out each (on site, max. 70 °C), to switch off or Note switch between the following compo- The switching contact is a floating N/O contact that is ■...
- Page 51 Installation sequence Heat pump control unit electrical connections (cont.) Plug Terminals Function Explanation 223.1 223.2 Central fault message Floating contact: Closed: Fault ■ Open: No fault ■ Not suitable for safety LV ■ Connection values (contact rating): Voltage: 230 V~ ■...
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Page 52: Cross Connect Pcb
Installation sequence Heat pump control unit electrical connections (cont.) Immersion heater EHE 400 V~ 224.7 X2.N Fig. 52 Immersion heater EHE, power supply 3/N/PE 400 V/50 Hz Terminals of the heat pump control unit 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) - Page 53 Installation sequence Heat pump control unit electrical connections (cont.) Terminals Function Explanation Power supply terminals of control unit Terminals for signal and safety connections ■ "L1" and auxiliary components Switched phase L1: Note ■ X3.1, X3.2, X3.3, X3.7, X3.11, X3.13 Switched phase can be used for on-site system components.
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Page 54: Controller And Sensor Pcb (Sensors)
Installation sequence Heat pump control unit electrical connections (cont.) Terminals Function Explanation X3.8 Contact humidistat Requires floating contact: X3.9 Closed: Safety chain has continuity. ■ Jumper Open: Safety chain interrupted; heat pump shut ■ down. Breaking capacity 230 V~, 0.15 A ■... - Page 55 Installation sequence Heat pump control unit electrical connections (cont.) Plug Sensors/terminals Type (PTC) Cylinder temperature sensor, top Pt500 (X6.1/X6.2) Cylinder temperature sensor, bottom Pt500 (X6.1/X6.3) Secondary circuit flow temperature sensor Pt500 (X5.8/X5.9) Type AWHI 351.A: Connected at the factory Type AWHO 351.A: Connect on site; fit inside the building within the secondary circuit flow (lead with plug 2.0 m long, extend on site, if required) Flow temperature sensor, heating circuit with mixer M2...
- Page 56 Installation sequence Heat pump control unit electrical connections (cont.) fÖ gÖ Fig. 53 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 57 Installation sequence Heat pump control unit electrical connections (cont.) X3.10 X3.11 230V 223.1 fÖ 223.2 230V 223.1 223.2 230V sÖ 223.1 223.2 Fig. 54 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 "...
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Page 58: 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) occurs omnipolar separation from the mains for all active via the type of connection and via parameter setting conductors, corresponding to overvoltage in the heat pump control unit. -
Page 59: Heat Pump Control Unit Power Supply 230 V
Installation sequence Power supply (cont.) Heat pump control unit power supply 230 V~ Max. fuse rating 16 A ■ max.16 A Standard tariff: No economy tariff with power-OFF ■ X3.18 1/N/PE X2.1 possible for the heat pump control unit 230 V/50 Hz X1.1 ■... -
Page 60: Power Supply With Power-Off
Installation sequence Power supply (cont.) 3. Connect the wires to mains terminal in the con- trol panel. 3/N/PE 400 V/50 Hz 4. Secure contact shield with screws. 5. If a seal is required (e.g. when using an economy Fig. 57 tariff with power-OFF), pass the seal wire through the holes drilled in both studs. - Page 61 Installation sequence Power supply (cont.) X3.7 X3.6 ≈ Fig. 58 Diagram excluding fuses and RCD. Heat pump control unit (terminals on the cross Ripple control receiver (contact open: power-OFF connect PCB) enabled) Instantaneous heating water heater (accessory) Backup fuse ripple control receiver Compressor (fan is directly coupled to the com- TNC system feed pressor power supply)
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Page 62: Phase Monitor (If Installed)
Installation sequence Power supply (cont.) X3.7 X3.6 ≈ Fig. 59 Diagram excluding fuses and RCD. Heat pump control unit (terminals on the cross Main isolator connect PCB) High tariff meter Instantaneous heating water heater (accessory) Ripple control receiver (contact open: power-OFF Compressor (fan is directly coupled to the com- enabled) with backup fuse pressor power supply) - Page 63 Installation sequence Power supply (cont.) Version 1 Version 2 N 11 21 <>U <>U L1 L2 L3 12 14 22 24 Fig. 61 LEDs explained in Fig. 61 Fig. 60 Voltage "U": ■ Illuminates green if voltage is present. Over/undervoltage in % Relay "R": Phase asymmetry in % ■...
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Page 64: Closing The Heat Pump
Installation sequence Power supply (cont.) Version 3 LEDs explained in Fig. 62 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 65: Closing The Control Panel
Installation sequence Closing the heat pump (cont.) Closing the control panel Fig. 63 Holes for type AWHI/AWHO 351.A120 Holes for type AWHI/AWHO 351.A114 Holes for type AWHI/AWHO 351.A110... -
Page 66: Fitting The Front Panel
Installation sequence Closing the heat pump (cont.) Fitting the front panel Fig. 64... -
Page 67: 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..................... 68 • 2. Compiling reports......................69 • • 3. Checking the refrigerant circuit for leaks................ 69 •... -
Page 68: 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 69: Compiling Reports
Commissioning, inspection, maintenance Opening the heat pump (cont.) Pivoting control panel to the side Fig. 65 Compiling reports Enter the readings taken during commissioning (described hereafter) into the reports on page 128 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 70: 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 71: Checking The Expansion Vessel And Heating Circuit Pressure
Commissioning, inspection, maintenance Filling and venting on the secondary side (cont.) 4. Check the system pressure at the pressure gauge. 6. Close drain & fill valve. Top up with water if required. Minimum system pressure: 0.8 bar (80 kPa) 7. Connect on-site hose to manual air vent valve Permiss. -
Page 72: Checking The Electrical Connections For Firm Seating
Commissioning, inspection, maintenance Cleaning the interior (cont.) Fig. 67 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 73: 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 74 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 75 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 76 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 77 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 78 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"...
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Page 79: 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 80: Repairs
Troubleshooting Repairs Overview of sensors, drain and air vent valves Fig. 70 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 81: 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 82 Troubleshooting Repairs (cont.)
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Page 83: Parts List Type Awhi 351.A Overview Of Assemblies
Parts list type AWHI 351.A Overview of assemblies The following details are required when ordering parts: ■ Serial no. (see type plate ■ Assembly (from this parts list) ■ Position number of the individual part within the assembly (from this parts list) 0004 Fig. -
Page 84: Casing
Parts list type AWHI 351.A Casing Front panels 0004 0005 0001 0007 0006 0002 0010 0007 0003 0010 Fig. 74... - Page 85 Parts list type AWHI 351.A Casing (cont.) Pos. Part 0001 Front panel, top 0002 Front panel, bottom 0003 Angled panel 0004 Top panel 0005 Back panel brace, top 0006 Back panel, bottom 0007 Vitocal 350 logo 0010 Closure...
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Page 86: Side Panels
Parts list type AWHI 351.A Casing (cont.) Side panels 0006 0005 0007 0001 0003 0002 0008 0004 0008 0008 Fig. 75... - Page 87 Parts list type AWHI 351.A Casing (cont.) Pos. Part 0001 Side panel, top left 0002 Side panel, bottom left 0003 Side panel, top right 0004 Side panel, bottom right 0005 Back panel brace, r.h. 0006 Back panel brace, l.h. 0007 EPP wall outlet adaptor 0008 Diaphragm grommet...
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Page 88: Miscellaneous
Parts list type AWHI 351.A Casing (cont.) Miscellaneous 0003 0001 0002 0004 0005 0006 0007 0008 0009 0010 Fig. 76... - Page 89 Parts list type AWHI 351.A Casing (cont.) Pos. Part 0001 Touch-up paint stick, Vitosilver 0002 Touch-up spray paint, Vitosilver 0003 Connection elements (set) 0004 O-ring 20.63 x 2.62 mm 0005 Push-fit connector D 28 mm 0006 Installation and service instructions 0007 Operating instructions 0008...
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Page 90: Air Module
Parts list type AWHI 351.A Air module 0008 0005 0007 0003 0007 0005 0002 0003 0004 0001 0006 Fig. 77... - Page 91 Parts list type AWHI 351.A Air module (cont.) Pos. Part 0001 Lid, front 0002 Front panel 0003 Side panel, front r.h./l.h. 0004 Cover, r.h./l.h. 0005 Side panel, rear r.h./l.h. 0006 Condensate pan 0007 Grommets for condensate pan (set) 0008 Lid, top...
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Page 92: Heat Pump Control Unit
Parts list type AWHI 351.A Heat pump control unit 0016 0021 0025 0026 0027 0020 0018 0012 0002 0030 0031 0032 0022 0019 0001 0017 0023 0010 0015 0014 0011 0009 0008 0013 0024 0003 0006 0004 0007 0005 Fig. 78... - Page 93 Parts list type AWHI 351.A Heat pump control unit (cont.) Pos. Part 0001 Programming unit 0002 ON/OFF switch 0003 Ribbon cable AWG 28 24 x 0.09 folded 0004 Ribbon cable, 16-pole 0005 Ribbon cable, 10-pole 0006 Cable harness ON/OFF switch 0007 4-pole connecting cable, length 85 mm 0008...
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Page 94: Electrical Equipment
Parts list type AWHI 351.A Electrical equipment Type AWHI 351.A10 and AWHI 351.A14 0002 0007 0009 0032 0008 0010 0007 0008 0006 0009 0010 0005 0019 0020 0003 0030 0014 0004 0013 0012 0023 0011 0015 0017 0018 0024 0016 0001 0031 0029... - Page 95 Parts list type AWHI 351.A Electrical equipment (cont.) Pos. Part 0001 EEV PCB 0002 Full wave soft starter 0003 Speed plug 0004 Distributor PCB 0005 Switching module for instantaneous heating water heater 0006 Switching module 0007 Three-phase monitor 0008 3-pole contactor 0009 Thermal relay 0010...
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Page 96: Type Awhi 351.A20
Parts list type AWHI 351.A Electrical equipment (cont.) Type AWHI 351.A20 0002 0007 0009 0008 0010 0006 0007 0008 0009 0010 0005 0019 0020 0003 0030 0014 0023 0004 0013 0012 0011 0024 0015 0017 0018 0001 0016 0029 0033 0026 0031 0028... - Page 97 Parts list type AWHI 351.A Electrical equipment (cont.) Pos. Part 0001 EEV PCB 0002 Full wave soft starter 0003 Speed plug 0004 Distributor PCB 0005 Switching module for instantaneous heating water heater 0006 Switching module 0007 Three-phase monitor 0008 3-pole contactor 0009 Thermal relay 0010...
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Page 98: Heat Pump Module
Parts list type AWHI 351.A Heat pump module 0003 0019 0033 0059 0012 0001 0034 0056 0012 0006 0035 0023 0047 0032 0037 0058 0011 0047 0030 0002 0038 0031 0029 0015 0020 0036 0022 0007 0020 0013 0018 0039 0016 0015 0053... - Page 99 Parts list type AWHI 351.A Heat pump module (cont.) Pos. Part 0001 Compressor 0002 Heat exchanger 0003 Condenser 0004 Thermostatic expansion valve 0005 Filter dryer 0006 High pressure sensor 0007 Low pressure sensor 0008 Electronic expansion valve 0009 Refrigerant receiver 0010 Solenoid valve 0011...
- Page 100 Parts list type AWHI 351.A Heat pump module (cont.) Pos. Part 0046 Refrigerant line, evaporator 0047 DN 18/DN 25 expansion joint 0048 Spiral hose thermal insulation 0049 Refrigerant line, refrigerant receiver filter dryer — 0050 Tension clip 0052 Gasket 8 x 12 mm, 50 x 5 mm 0053 Connector 22 x 16 mm 0054...
- Page 101 Parts list type AWHI 351.A Heat pump module (cont.)
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Page 102: Base Frame
Parts list type AWHI 351.A Base frame 0001 0002 0010 0003 0011 0009 0003 0010 0003 0004 0013 0014 0005 0015 0006 0014 0008 0007 0012 Fig. 82... - Page 103 Parts list type AWHI 351.A Base frame (cont.) Pos. Part 0001 Radial fan 0002 Inlet ring for radial fan 0003 EPP connecting screw 0004 Evaporator 0005 Sound insulation mat base plate 0006 Anti-vibration mounts (set) 0007 Adjustable foot D 46, M12 x 70 (set) 0008 Cover, control panel 0009...
- Page 104 Parts list type AWHI 351.A Base frame (cont.)
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Page 105: Parts List Type Awho 351.A Overview Of Assemblies
Parts list type AWHO 351.A Overview of assemblies The following details are required when ordering parts: ■ Serial no. (see type plate ■ Assembly (from this parts list) ■ Position number of the individual part within the assembly (from this parts list) Fig. -
Page 106: Casing
Parts list type AWHO 351.A Casing Front panels 0004 0005 0001 0007 0006 0002 0010 0007 0003 0010 Fig. 84... - Page 107 Parts list type AWHO 351.A Casing (cont.) Pos. Part 0001 Front panel, top 0002 Front panel, bottom 0003 Angled panel 0004 Top panel 0005 Back panel brace, top 0006 Back panel, bottom 0007 Vitocal 350 logo 0010 Closure...
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Page 108: Side Panels
Parts list type AWHO 351.A Casing (cont.) Side panels 0005 0002 0001 0002 0006 0001 0003 0002 0004 Fig. 85... - Page 109 Parts list type AWHO 351.A Casing (cont.) Pos. Part 0001 Side panel, top, with cover grille 0002 Grille cover for side panel 0003 Side panel, bottom left 0004 Side panel, bottom right 0005 Back panel brace, l.h. 0006 Back panel brace, r.h.
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Page 110: Silencer Hood
Parts list type AWHO 351.A Casing (cont.) Silencer hood 0001 0002 0001 Fig. 86... - Page 111 Parts list type AWHO 351.A Casing (cont.) Pos. Part 0001 Left/right silencer hood 0002 Rear silencer hood...
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Page 112: Miscellaneous
Parts list type AWHO 351.A Casing (cont.) Miscellaneous 0003 0001 0004 0005 0002 0006 0007 0008 0011 0009 0010 Fig. 87... - Page 113 Parts list type AWHO 351.A Casing (cont.) Pos. Part 0001 Touch-up paint stick, Vitosilver 0002 Touch-up spray paint, Vitosilver 0003 Connection elements (set) 0004 O-ring 20.63 x 2.62 mm 0005 Push-fit connector D 8 mm 0006 Installation and service instructions 0007 Operating instructions 0008...
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Page 114: Air Module
Parts list type AWHO 351.A Air module 0008 0005 0007 0003 0007 0005 0002 0003 0001 0006 Fig. 88... - Page 115 Parts list type AWHO 351.A Air module (cont.) Pos. Part 0001 Lid, front 0002 Front panel 0003 Side panel, front l.h./r.h. 0005 Side panel, rear l.h./r.h. 0006 Condensate pan 0007 Grommets for condensate pan (set) 0008 Lid, top...
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Page 116: Heat Pump Control Unit
Parts list type AWHO 351.A Heat pump control unit 0016 0021 0025 0026 0027 0020 0018 0012 0002 0030 0031 0032 0022 0019 0001 0017 0023 0010 0015 0014 0011 0009 0008 0013 0024 0003 0006 0004 0007 0005 Fig. 89... - Page 117 Parts list type AWHO 351.A Heat pump control unit (cont.) Pos. Part 0001 Programming unit 0002 ON/OFF switch 0003 Ribbon cable AWG 28 24 x 0.09 folded 0004 Ribbon cable, 16-pole 0005 Ribbon cable, 10-pole 0006 Cable harness ON/OFF switch 0007 4-pole connecting cable, length 85 mm 0008...
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Page 118: Electrical Equipment
Parts list type AWHO 351.A Electrical equipment Type AWHO 351.A10 and AWHO 351.A14 0002 0007 0009 0032 0008 0010 0006 0007 0008 0009 0010 0005 0020 0003 0030 0004 0023 0014 0013 0015 0024 0011 0017 0018 0031 0001 0016 0029 0026 0025... - Page 119 Parts list type AWHO 351.A Electrical equipment (cont.) Pos. Part 0001 EEV PCB 0002 Full wave soft starter 0003 Speed plug 0004 Distributor PCB 0005 Switching module for instantaneous heating water heater 0006 Switching module 0007 Three-phase monitor 0008 3-pole contactor 0009 Thermal relay 0010...
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Page 120: Type Awho 351.A20
Parts list type AWHO 351.A Electrical equipment (cont.) Type AWHO 351.A20 0002 0007 0009 0008 0010 0006 0007 0008 0009 0010 0005 0003 0020 0030 0004 0014 0023 0013 0011 0015 0024 0017 0018 0001 0031 0016 0029 0026 0032 0025 0028 0086... - Page 121 Parts list type AWHO 351.A Electrical equipment (cont.) Pos. Part 0001 EEV PCB 0002 Full wave soft starter 0003 Speed plug 0004 Distributor PCB 0005 Switching module for instantaneous heating water heater 0006 Switching module 0007 Three-phase monitor 0008 3-pole contactor 0009 Thermal relay 0010...
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Page 122: Heat Pump Module
Parts list type AWHO 351.A Heat pump module 0063 0047 0032 0003 0001 0047 0031 0062 0050 0038 0036 0039 0033 0007 0057 0019 0002 0018 0008 0015 0021 0022 0014 0058 0016 0013 0020 0030 0046 0042 0011 0015 0006 0004 0037... - Page 123 Parts list type AWHO 351.A Heat pump module (cont.) Pos. Part 0001 Compressor 0002 Heat exchanger 0003 Condenser 0004 Thermostatic expansion valve 0005 Filter dryer BFK-163S 0006 High pressure sensor 0007 Low pressure sensor 0008 Electronic expansion valve 0009 Refrigerant receiver 0010 Solenoid valve 0011...
- Page 124 Parts list type AWHO 351.A Heat pump module (cont.) Pos. Part 0046 Refrigerant line, evaporator 0047 DN 18/DN 25 expansion joint 0048 Hose 1 with bend ¼ 0049 Refrigerant line, refrigerant receiver filter dryer — 0050 Tension clip 12 mm 0052 Gasket 8 x 50 x 5 mm 0053...
- Page 125 Parts list type AWHO 351.A Heat pump module (cont.)
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Page 126: Base Frame
Parts list type AWHO 351.A Base frame 0003 0001 0010 0002 0011 0009 0003 0010 0003 0004 0013 0014 0005 0014 0015 0006 0008 0007 0012 Fig. 93... - Page 127 Parts list type AWHO 351.A Base frame (cont.) Pos. Part 0001 Radial fan 0002 Inlet ring for radial fan 0003 EPP connecting screw 0004 Evaporator 0005 Sound insulation mat base plate 0006 Anti-vibration mounts (set) 0007 Adjustable foot (set) 0008 Cover, control panel 0009 Inlet ring mounting plate (set)
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Page 128: 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 129 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 130 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 131 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...
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Page 132: Specification Specification
Specification Specification Heat pumps installed indoors Type AWHI 351.A10 AWHI 351.A14 AWHI 351.A20 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 Coefficient of performance (COP) - Page 133 Specification Specification (cont.) Type AWHI 351.A10 AWHI 351.A14 AWHI 351.A20 Dimensions Total length Total width 1030 1200 Total height 1870 1870 1870 Total weight Permiss. operating pressure Connections Heating flow and return (female thread) ½ ½ ½ Condensate hose (Ø internal/external) 25/32 25/32 25/32...
- Page 134 Specification Specification (cont.) Type AWHO 351.A10 AWHO 351.A14 AWHO 351.A20 Electrical values, heat pump Rated voltage 3/N/PE 400 V/50 Hz Max. rated current 18.3 Starting current (with electronic starting current limiter) Starting current (with stalled armature) Fuse protection 3 x B16A 3 x B20A 3 x B25A Fan protection...
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Page 135: Sound Transmission Data
Specification Sound transmission data Type AWHI 351.A (heat pumps installed indoors, 400 V appliances) Type AWHI 351.A10 AWHI 351.A14 AWHI 351.A20 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 136: 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 137: Certificates Declaration Of Conformity
AWHO-M Including the Vitotronic 200, type WO1B heat pump control unit We, Viessmann Werke GmbH & Co. KG, D-35107 Allendorf, declare as sole responsible body that the named product complies with the provisions of the following directives and regulations. 2014/68/EU... -
Page 138: Keyword Index
Keyword index Keyword index Antifreeze..............19 Electrical cables............18 Appliance connector..........10, 11 Electrical connection..........34, 39 Appliance fuse............81 – General information...........8 Electrical connections – Checking..............72 Buffer temperature sensor......... 13 – Circulation pumps........... 49 – Controller and sensor PCB........54 –... - Page 139 Keyword index Keyword index (cont.) Interior cleaning............71 Parameter setting............74 Internal components...........80 Partition wall............10, 11 IP rating..............134 Parts list Isolators..............58 – AWHO 351.A............105 Parts lists – AWHI 351.A.............83 KG conduit..............19 Performance data, heating.......132, 133 Permiss. operating pressure......133, 134 Phase asymmetry............
- Page 140 Top-up water.............. 70 Warranty..............73 Total sound power level..........135 Water quality.............. 70 Total weight............133, 134 Wiring diagram............20 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...