Viessmann Vitocal 151-A Installation And Service Instructions Manual
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Viessmann Vitocal 151-A Installation And Service Instructions Manual

Viessmann Vitocal 151-A Installation And Service Instructions Manual

Air source heat pump, monoblock version for heating and cooling operation, with1 integrated heating/cooling circuit
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VIESMANN
Installation and service instructions
for contractors
Vitocal 151-A
Type AWOT(-M)-E-AC/AWOT(-M)-E-AC-AF 151.A
Air source heat pump, monoblock version for heating and cooling operation, with
1 integrated heating/cooling circuit
VITOCAL 151-A
Please keep safe.
6222170 GB
2/2024

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Summary of Contents for Viessmann Vitocal 151-A

  • Page 1 VIESMANN Installation and service instructions for contractors Vitocal 151-A Type AWOT(-M)-E-AC/AWOT(-M)-E-AC-AF 151.A Air source heat pump, monoblock version for heating and cooling operation, with 1 integrated heating/cooling circuit VITOCAL 151-A Please keep safe. 6222170 GB 2/2024...

  • Page 2: Safety Instructions

    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 The outdoor unit contains easily flamma- This symbol warns against the risk ble refrigerant in safety group A3...
  • Page 3 Safety instructions Safety instructions (cont.) Regulations to be observed National installation regulations Relevant country-specific safety regu- ■ ■ Statutory regulations for the prevention lations ■ of accidents Applicable regulations and guidelines ■ Statutory regulations for environmental for operation, service, maintenance, ■...

  • Page 4: Working On The System

    Safety instructions Safety instructions (cont.) Do not remove, block or bridge safety Please note ■ equipment. Electronic assemblies can be dam- Do not make any changes: aged by electrostatic discharge. ■ Do not modify the outdoor unit, inlet/ Before beginning work, touch outlet lines, electrical connections/ earthed objects, such as heating or cables or the surroundings.
  • Page 5 Safety instructions Safety instructions (cont.) A CO or powder extinguisher must be Danger ■ Refrigerant is under pressure: to hand in the following cases: Mechanical loading of lines and Refrigerant is being drained. – components can cause leaks in the Refrigerant is being topped up.

  • Page 6: Connecting Cables

    For installation and replacements, Seal the pipe entry to the building ■ use only Viessmann original parts using the most suitable current or spare parts approved by technology. Route the pipes into Viessmann.
  • Page 7 Safety instructions Safety instructions (cont.) From a safe position, switch off the Danger ■ electricity supply for all system compo- If water escapes from the appli- nents. ance, there is a risk of scalding. Remove ignition sources from the dan- Never touch hot heating water.
  • Page 8 Safety instructions Safety instructions (cont.) Danger Temperature range for storage: 25 °C – ■ Escaping refrigerant can lead to fire to 70 °C and explosions that result in very Only store the outdoor unit in its ex- ■ serious injuries or death. There is a factory protective packaging.
  • Page 9 Index Index 1. Information Disposal of packaging ................12 Symbols ....................12 Intended use ..................12 Product information ................13 Layout and functions ................13 ■ System examples ................15 ■ Maintenance parts and spare parts ............ 15 ■ 2. Preparing for installation Requirements for on-site connections ...........
  • Page 10 Terminal area 230 V~/400 V~ ............. 63 ■ HPMU electronics module: Accessory 230 V~ and BUS connection . 66 ■ Connecting with other Viessmann appliances via the CAN bus ..68 ■ Connecting the energy meter ............. 69 ■ Fitting the programming unit ............... 70 ■...
  • Page 11 ■ Removing the circulation pump head ..........135 ■ Status display, internal circulation pump ..........135 Checking the temperature sensors ............136 Viessmann NTC 10 k (blue marking) ..........137 Ω ■ Checking the water pressure sensor ............. 138 Checking the fuse .................. 138 Outdoor unit maintenance Removing and fitting the outer casing ...........

  • Page 12: Intended Use

    Information Disposal of packaging Please dispose of packaging waste in line with statu- tory regulations. Symbols Symbols in these instructions The steps in connection with commissioning, inspec- tion and maintenance are found in the "Commission- ing, inspection and maintenance" section and identified Symbol Meaning as follows:...

  • Page 13: Layout And Functions

    Product information Layout and functions Vitocal 151-A is a monoblock air source heat pump, Instantaneous heating water heater comprising 1 indoor unit with integral DHW cylinder and 1 outdoor unit. In the indoor unit, an instantaneous heating water...
  • Page 14 Information Product information (cont.) External heat generator (on site) Type plate An external buffer cylinder is always required for sys- tems with an external heat generator. The external heat generator is hydraulically integrated into the system downstream of the external buffer cyl- inder.
  • Page 15 Information Product information (cont.) Available Accessories Integral System examples Available system examples: www.viessmann-schemes.com Maintenance parts and spare parts Maintenance parts and spare parts can be identified and ordered directly online. Viessmann Partnershop Login: https://shop.viessmann.com/ Viessmann spare part app www.viessmann.com/etapp...

  • Page 16: Indoor Unit

    Preparing for installation Requirements for on-site connections Indoor unit A B C D E F Fig. 2 Secondary circuit flow (heating/cooling circuit 1/ Heating water to outdoor unit, connection Cu 28 x external buffer cylinder), connection Cu 28 x 1.0 mm 1.0 mm DHW, connection Cu 22 x 1.0 mm Cold water, connection Cu 22 x 1.0 mm...

  • Page 17: Requirements For On-Site Connections

    Preparing for installation Requirements for on-site connections (cont.) Outdoor unit with 1 fan 1144 Fig. 3 Heating water to indoor unit (heating water outlet): Power cable Plug-in connection for Cu 28 x 1.0 mm CAN bus communication cable (accessories) Heating water from indoor unit (heating water Condensate drain inlet): Plug-in connection for Cu 28 x 1.0 mm...
  • Page 18 Preparing for installation Requirements for on-site connections (cont.) Outdoor unit with 2 fans 1144 Fig. 4 Heating water to indoor unit (heating water outlet): Power cable Plug-in connection for Cu 28 x 1.0 mm CAN bus communication cable (accessories) Heating water from indoor unit (heating water Condensate drain inlet): Plug-in connection for Cu 28 x 1.0 mm...
  • Page 19 Siting the outdoor unit Transporting the outdoor unit Danger Please note The outdoor unit is filled with refrigerant R290 Excessive tilting of the outdoor unit will lead to (propane): Mechanical loading can lead to leaks equipment damage. in the refrigerant circuit. Where leaks of refriger- ■...
  • Page 20 Siting the outdoor unit Transporting the outdoor unit (cont.) Fig. 5 Transport aid...
  • Page 21 Siting the outdoor unit Transporting the outdoor unit (cont.) 2. Use the transport aids to lift and transport the out- Removing the transport aids door unit. Wear personal protective equipment, e.g. protective gloves and safety shoes. After handling, remove all transport aids. Fig.

  • Page 22: Transport By Crane

    Siting the outdoor unit Transporting the outdoor unit (cont.) Transport by crane Danger 2. Protect the evaporator on the rear side of the out- Incorrect unloading and transportation can result door unit against damage: in damage to the outdoor unit. Should damage ■...

  • Page 23: Wall Mounting

    Siting the outdoor unit Installation information (cont.) Floorstanding installation Particularly in adverse climatic environments (minus If the support cannot be used, site the outdoor unit ■ ■ temperatures, snow and humidity) a distance to the on a concrete foundation 150 mm high using an ≥...
  • Page 24 Siting the outdoor unit Installation information (cont.) Siting In accordance with EN 378-3, the outdoor unit may Provide equipment for the protection of the outdoor ■ ■ only be installed in the open air. unit against mechanical damage e.g. Impact damage ■...

  • Page 25: Installation Location

    Siting the outdoor unit Installation information (cont.) Floorstanding installation: Flat roof installation: ■ Ensure that condensate can drain freely. ■ Allowing the condensate to drain freely onto the roof ■ Allow condensate to seep away into a gravel bed or surface is not permissible, as this may result in the into a deep seepage layer, or direct it into the waste formation of layers of ice.

  • Page 26: Safety Zone

    Siting the outdoor unit Installation location (cont.) If siting the appliance in a location that is exposed to Maintain a clearance of at least 3 m to pathways, ■ ■ wind, ensure that the wind cannot influence the fan downpipes or sealed surfaces. The cooled air in the area.
  • Page 27 Siting the outdoor unit Installation location (cont.) Freestanding positioning of the outdoor unit Corner positioning of the outdoor unit, right Fig. 8 2894 Safety zone Siting the outdoor unit in front of an external wall 1000 Fig. 10 3144 Safety zone 3144 Corner positioning of the outdoor unit, left Fig.

  • Page 28: Minimum Clearances

    Siting the outdoor unit Minimum clearances Note The minimum distances shown in the following are identical for outdoor units with 1 and 2 fans. 1000 Fig. 12 Air intake Wall clearance depending on line routing: Air discharge ■ Line entry above ground level: 250 mm ≥...

  • Page 29: Floorstanding Installation

    Siting the outdoor unit Condensate drain (cont.) Draining condensate via drain pipe in seepage Draining condensate via waste water system layer Fig. 14 Fig. 13 Outdoor unit Outdoor unit Support for floorstanding installation (accessories) Support for floorstanding installation (accessories) Condensate drain connector Condensate drain connector Foundation Foundation...
  • Page 30 Siting the outdoor unit Floorstanding installation (cont.) Fig. 15 Fig. 16 Frost protection for foundations: compacted Fixing points for support: crushed stone (e.g. 0 to 32/56 mm); thickness of Use ground anchors with a tensile force of at layer subject to local requirements and building least 2.5 kN.
  • Page 31 Siting the outdoor unit Floorstanding installation (cont.) Wall a, b For line entries below ground level only: See the Flexible separating layer between the foundations following tables. and the wall, in accordance with local require- Bending radius ments and the standard rules of building engi- neering Installation with support for floorstanding installa- When laying the Quattro connection line in a...
  • Page 32 Siting the outdoor unit Floorstanding installation (cont.) Fig. 18 Frost protection for the foundations: Compacted Air discharge crushed stone, e.g. 0 to 32/56 mm; thickness of Wall layer subject to local requirements and building Flexible separating layer between the foundations regulations and the wall, in accordance with local require- Foundation strip of reinforced concrete...
  • Page 33 Siting the outdoor unit Floorstanding installation (cont.) Installation instructions for anti-vibration base When laying the Quattro connection line in a ■ Align the anti-vibration base horizontally on the foun- straight trench dation using the spirit levels supplied. 940 mm ≥ ■...
  • Page 34 Siting the outdoor unit Floorstanding installation (cont.) Support for floorstanding installation (accessories) Further installation instructions for the Connection set, floorstanding installation (accesso- Quattro connection line ries) Separate installation instructions Indoor/outdoor unit CAN bus communication cable and outdoor unit power cable: Note Route the cables free of strain.
  • Page 35 Siting the outdoor unit Floorstanding installation (cont.) Support for floorstanding installation (accessories) Connection set, floorstanding installation (accesso- ries) Indoor/outdoor unit CAN bus communication cable and outdoor unit power cable: Route the cables free of strain. For free drainage of condensate: Gravel bed as soakaway Ring seal (accessories) Quattro connection line laid underground (acces-...
  • Page 36 Siting the outdoor unit Floorstanding installation (cont.) 3000 Fig. 23 Ground Support for floorstanding installation (accessories), Pathway, patio illustration without design casing (accessories) Hydraulic connection lines, indoor/outdoor unit Foundation strip Indoor/outdoor unit CAN bus communication cable For free drainage of condensate: Gravel bed as and outdoor unit power cable: soakaway Route the cables free of stress.
  • Page 37 Siting the outdoor unit Wall mounting (cont.) Installation with bracket set for wall mounting Note The following information for wall mounting applies to outdoor units with 1 and 2 fans. The outdoor unit with 2 fans is shown as an example. Fig.

  • Page 38: Installing The Indoor Unit

    Installing the indoor unit Transporting the indoor unit Please note Impacts, compression and tensile loads can cause damage to the outside panels of the appliance. Never apply loads/weight to the top, front or side panels of the appliance. Splitting the indoor unit To facilitate handling in confined spaces, the hydraulic unit can be separated from the DHW cylinder.
  • Page 39 Installing the indoor unit Transporting the indoor unit (cont.) Fig. 25...
  • Page 40 Installing the indoor unit Transporting the indoor unit (cont.) Fig. 26 Transport protection...

  • Page 41: Requirements For The Installation Room

    Installing the indoor unit Transporting the indoor unit (cont.) Fig. 27 Requirements for the installation room Danger Please note Dust, gases and vapours can be damaging to An unfavourable indoor environment can lead to health and trigger explosions. malfunctions and appliance damage. Prevent dust, gases and vapours in the installa- The installation room must be dry and free ■...
  • Page 42 Installing the indoor unit Requirements for the installation room (cont.) WiFi operational reliability and system requirements The appliance is equipped with an integral WiFi com- Wireless signals are isolated by service ducts and ■ munication module. This WiFi communication module lift shafts.
  • Page 43 Installing the indoor unit Requirements for the installation room (cont.) Ideal angle of penetration Fig. 29 WiFi router Heat generator Wall Minimum clearances Secondary circuit connections, left/top Secondary circuit connections, right/top Fig. 30 Fig. 31...
  • Page 44 Installing the indoor unit Minimum room height Note Remove the packaging upwards before positioning. Fig. 32 Indoor unit with integral DHW cylinder Finished floor level or top edge of platform for unfinished floors Pressure points Note ■ Observe the permissible floor load. Ø...

  • Page 45: Hydraulic Connections

    Hydraulic connections Hydraulic connection of the outdoor unit Opening the outdoor unit Note The following information for opening the outdoor unit applies to outdoor units with 1 and 2 fans. The outdoor unit with 2 fans is shown as an example. Fig.
  • Page 46 Hydraulic connections Hydraulic connection of the outdoor unit (cont.) Connecting the hydraulic connection lines Connect the connection lines of the hydraulic connec- Requirements to be met by on-site lines tion set (accessories) to the underside of the outdoor unit using either copper pipe or corrugated stainless Requirements to be met, e.g.
  • Page 47 Hydraulic connections Hydraulic connection of the outdoor unit (cont.) Fig. 36 Locking screw Rotational direction for locking the transport bracket Rotational direction for releasing the transport bracket After positioning of the outdoor unit, check whether the transport bracket is completely secured with an Allen key (size 5).
  • Page 48 Hydraulic connections Hydraulic connection of the indoor unit (cont.) M N F K L Fig. 37 Expansion vessel, suitable for drinking water Pressure gauge connection Visible discharge pipe outlet point Non-return valve/pipe separator Safety valve Cold water Automatic thermostatic mixing valve Drinking water filter Pressure reducer to DIN 1988-200:2012-05 Shut-off valve...
  • Page 49 Hydraulic connections Hydraulic connection of the indoor unit (cont.) Installing the hydraulic connection set (accesso- Hydraulic connections ries) 1. If the expansion vessel fitted in the indoor unit is "Hydraulic connection set" installation instruc- insufficient, equip the secondary circuit on site with tions an additional expansion vessel.

  • Page 50: Temperature Limiter

    Hydraulic connections Hydraulic connection of the indoor unit (cont.) 6. Connect the drain hose from the safety valve to the waste water system with a fall and an atmospheric pipe vent in accordance with EN 12828, e.g. via a drain outlet or waste water inlet. ■...
  • Page 51 Hydraulic connections Hydraulic connection of the indoor unit (cont.) Contact humidistat For area cooling systems (e.g. underfloor heating cir- Systems with external buffer cylinder cuit, chilled ceiling), a contact humidistat (accessories) is required. Heating/cooling circuits 1, 2, 3 and 4: ■...
  • Page 52 Hydraulic connections Hydraulic connection of the indoor unit (cont.) Both connections from and to the outdoor unit are hydraulically connected for this purpose. It is essential to install an air vent valve and a non-return valve in this connection line: See the following illustration. Fig.
  • Page 53 Hydraulic connections Hydraulic connection of the indoor unit (cont.) Aligning the indoor unit SW17 Fig. 41...
  • Page 54 Electrical connections Preparing the electrical connections Cables ■ For cable lengths and cable cross-sections: See the following tables. ■ For accessories: Cables with the required number of cores for exter- nal connections. Prepare an on-site distribution box. Cable lengths in the indoor unit Connection cables Cable lengths in the indoor unit 230 V~, e.g.
  • Page 55 Electrical connections Electrical connection of the indoor unit Indoor unit: Removing the front panels Fig. 42...
  • Page 56 Electrical connections Electrical connection of the indoor unit (cont.) Relocating the ON/OFF switch Depending on the installation situation, the ON/OFF Open the electrical wiring chamber of the HPMU. Dis- switch can be installed either on the right or the left connect the cable of the ON/OFF switch and remove.

  • Page 57: Electrical Connection Of The Indoor Unit

    Electrical connections Electrical connection of the indoor unit (cont.) Overview of electrical terminal areas Fig. 44 Extra low voltage (ELV) terminal area < 42 V HMI programming unit (upper PCB) EHCU electronics module Terminal area 230 V~/400 V~ (lower PCB) HPMU electronics module Opening electrical terminal areas Please note...
  • Page 58 Electrical connections Electrical connection of the indoor unit (cont.) Removing the programming unit mounting bracket Move the bracket to the maintenance position Fig. 45 Fig. 46...
  • Page 59 Electrical connections Electrical connection of the indoor unit (cont.) Opening the HPMU electronics module Opening the EHCU electronics module Fig. 47 Fig. 48 Indoor unit: Routing cables to the terminal area Danger Danger Damaged wiring insulation can lead to serious Incorrect wiring can lead to serious injury from injury from electrical current and result in appli- electrical current and result in appliance dam-...
  • Page 60 Electrical connections Electrical connection of the indoor unit (cont.) Please note Openly routed cables can be damaged by vibra- tion. Fasten all cables inserted into the appliance, along with the existing cable harness, with cable ties. < 42 V 230 V~/400 V~ Fig.
  • Page 61 Electrical connections Electrical connection of the indoor unit (cont.) Extra low voltage (ELV) terminal area < 42 V 1 2 3 4 5 6 9 10 11 12 CAN L GND CAN H CAN L CAN H PlusBus 1 2 3 4 5 6 7 8 9 10 11 12 24 V 24 V...
  • Page 62 91.H charge VX3 For recommended connecting cable and fur- ther information: See chapter "Connecting with other Viessmann appliances via the CAN bus". The connection is routed internally to plug 91 in the HPMU electronics module. Do not connect CAN Ground (GND)!
  • Page 63 Electrical connections Electrical connection of the indoor unit (cont.) Lower luster terminal : Sensors Terminals Component Explanation 1 and 2 Contact humidistat, 24 V for heating/cool- Recommended connecting cable: 92A.1 GND ing circuit 1 2 x 0.75 mm ■ 92A.2 24 V Max.
  • Page 64 Electrical connections Electrical connection of the indoor unit (cont.) Upper luster terminal : 230 V~ components and digital inputs Terminals Component/function Explanation 1 to 5 143.1 Power supply for configurable digital in- Voltage: 230 V~ puts 143.2 to 143.5 143.2 Configurable digital inputs 1 to 4 Set the required parameters during commis- Possible functions: See chapter "Digital in-...
  • Page 65 Electrical connections Electrical connection of the indoor unit (cont.) The following functions are available via the 4 digital inputs: Functions Switching contacts Explanation 143.2 143.3 143.4 143.5 Power-OFF Requires floating N/C contact: — — — Closed: Heat pump operational ■ Open: Heat pump shut down ■...
  • Page 66 Electrical connections Electrical connection of the indoor unit (cont.) Functions Switching contacts Explanation 143.2 143.3 143.4 143.5 External blocking External blocking of refrigerant circuit and instantane- — — — ous heating water heater 143.1 143.2 Floating contact (on site) Heating/cooling Temperature limiter to restrict the maximum tempera- —...
  • Page 67 Vitocharge VX3 Recommended connecting cable: Pre-assembled bus cable (accessories) ■ For further information: See chapter "Con- necting with other Viessmann appliances via the CAN bus". Do not connect CAN Ground (GND)! Note Plug 72 of the indoor/outdoor unit CAN bus communication cable may only be connec- ted to terminal 72.
  • Page 68 156 Power supply for PlusBus subscribers in the HPMU electronics module Mixer extension kit Connecting with other Viessmann appliances via the CAN bus The heat pump can form a system network with other Note compatible appliances via the external CAN bus. Com-...

  • Page 69: Connecting The Energy Meter

    ID must be changed to "ID 98" for one of Recommended cable type: See chapter "Connecting them. with other Viessmann appliances via the CAN bus". Installation and service instructions for the Please note "Energy meter"...
  • Page 70 Electrical connections Electrical connection of the indoor unit (cont.) Fitting the programming unit Fig. 57 Programming unit...

  • Page 71: Electrical Connection Of The Outdoor Unit

    Electrical connections Electrical connection of the outdoor unit Cable routing to the terminal area Outdoor unit with 1 fan Length of cable in appliance: Compressor power cable 230 V~: 300 mm ■ ■ CAN bus communication cable: 900 mm Fig. 58 Compressor power supply 230 V~ Connection for CAN bus communication cable (accessories)
  • Page 72 Electrical connections Electrical connection of the outdoor unit (cont.) Outdoor unit with 2 fans Fig. 59 Compressor power supply 230 V~/400 V~ Cable entry for CAN bus communication cable Connection for CAN bus communication cable Torque: 6 Nm (accessories) Cable entry for power cable Torque: 8 Nm Length of cable in appliance: ■...

  • Page 73: Recommended Cable

    Electrical connections Connecting the indoor/outdoor unit CAN bus… (cont.) Recommended cable Recommended cable: ■ Indoor/outdoor unit bus communication cable (acces- sories), length 5, 15 or 30 m ■ For wiring on site: Only use the cable types listed in the following two tables.
  • Page 74 Electrical connections Connecting the indoor/outdoor unit CAN bus… (cont.) Outdoor unit with 1 fan GND LOW- High+ CAN L CAN H Fig. 60 Ferrite Colour coding to IEC 60757: BN Brown GN Green WH White...
  • Page 75 Electrical connections Connecting the indoor/outdoor unit CAN bus… (cont.) Outdoor unit with 2 fans Vitocal 230 V Vitocal 400 V 3 4 5 CAN L CAN H Fig. 61 Ferrite Colour coding to IEC 60757: BN Brown GN Green WH White...
  • Page 76 Electrical connections Power supply Isolators for non-earthed conductors Note ■ Install an isolator in the power cable to provide Incorrectly executed electrical installations may cause omnipolar separation from the mains for all active undesirable electromagnetic interaction with other conductors, corresponding to overvoltage category electronic devices.

  • Page 77: Power Supply

    Electrical connections Power supply (cont.) Only types ... SP: Heat pumps with central power supply on the indoor unit Shared power supply for heat pump control unit and Power supply: 1/N/PE 230 V/50 Hz ■ instantaneous heating water heater: Recommended power cable: ■...
  • Page 78 Electrical connections Power supply (cont.) Heat pump control unit Power supply 1/N/PE 230 V/50 Hz 1/N/PE 230 V/50 Hz Recommended power cable Without power-OFF 3 x 1.5 mm ■ With power-OFF 5 x 1.5 mm ■ Max. cable length 50 m Max.
  • Page 79 Electrical connections Power supply (cont.) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 L1 L2 L3 N1 N2 N3 1/N/PE 230 V/50 Hz 3/N/PE 400 V/50 Hz 1/N/PE 230 V/50 Hz Fig. 63 Jumpers Mains terminals for the instantaneous heating water heater...
  • Page 80 Electrical connections Power supply (cont.) Instantaneous heating water heater power supply 230 V~ Power supply 1-phase 2-phase 3-phase N2 N3 1x 1/N/PE 230 V/50 Hz 2x 1/N/PE 230 V/50 Hz 3x 1/N/PE 230 V/50 Hz Jumpers at terminals N1 to N3 Remove! In 3-phase network: Remove!
  • Page 81 Electrical connections Power supply (cont.) Outdoor unit: Compressor power supply 230 V~/400 V~ Danger Please note Risk of explosion: Electrical components can Incorrect phase sequence can cause damage to cause sparks which may be ignited by escaping the appliance. refrigerant. Connect the 400 V~ compressor power supply Before inserting or removing the power supply only in the phase sequence specified (see ter-...
  • Page 82 Feed: TNC system Mains power supply in conjunction with self-consumption Connection schematics for self-consumption via the integrated energy management system as well as fur- ther information: See https://link.viessmann.com/energymanagement. Fig. 65 Closing the indoor unit Danger Please note The absence of system component earthing can...
  • Page 83 Electrical connections Closing the outdoor unit Note The following information for closing the outdoor unit applies to outdoor units with 1 and 2 fans. The outdoor unit with 2 fans is shown as an example. Fig. 66 2. Torque 1.5 +1.0 Nm...
  • Page 84 Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance Commissioning steps Inspection steps Maintenance steps Page • 1. Compiling reports......................85 • 2. Commissioning the system....................85 • 3. Filling the system....................... 94 • 4. Building up the system pressure..................97 •...

  • Page 85: Compiling Reports

    All hydraulic lines are connected to the heat pump For external CAN bus for system networks: See ■ and have been checked for leaks. "Connecting with other Viessmann appliances via the ■ The indoor and outdoor units are connected to each CAN bus".
  • Page 86 For commissioning via the ViGuide app: Select The heat pump must be connected to the "Commissioning with software tool". The heat Viessmann server via the internet in order to per- pump automatically activates the access point. A form settings via the ViCare app. This internet con- direct WiFi connection to a mobile device is nection is established via the home WiFi.
  • Page 87 Commission all Viessmann appliances via the heat pump's access point using the ViGuide app. 1. Where one or more of the other Viessmann appli- Perform all necessary settings in the ViGuide app. ances have already been operational as a stand- alone unit, first restore the factory settings on 5.

  • Page 88: Commissioning Assistant

    Commissioning, inspection, maintenance Commissioning the system (cont.) 3. Enter password "viservice". 5. "Commissioning" 4. Confirm with Commissioning assistant Procedure Explanations and references Commissioning Language Select the required menu language for the programming unit. Commissioning tool With programming unit Commissioning is continued with the programming unit. ■...
  • Page 89 Commissioning, inspection, maintenance Commissioning the system (cont.) Procedure Explanations and references System scheme Low loss header/buffer Configuration in accordance with system equipment (in conjunction with external cylinder buffer cylinder) Not available ■ Buffer cylinder, heating System with external heating water buffer cylinder with 1 buffer temperature sen- ■...
  • Page 90 Commissioning, inspection, maintenance Commissioning the system (cont.) Procedure Explanations and references Venting The system is vented via the quick-action air vent valve in the outdoor unit: See chapter "Venting the system" on page 98. Note If the outdoor unit is not yet connected, connect both the flow and return connec- tions of the outdoor unit to the indoor unit on site.
  • Page 91 Commissioning, inspection, maintenance Commissioning the system (cont.) Procedure Explanations and references External heat generator Operating mode, external Not active ■ heat generator Demand cannot be sent to the external heat generator. Heating only ■ Room heating via the external heat generator; no room cooling Note DHW is always heated by the integral instantaneous heating water heater.
  • Page 92 Commissioning, inspection, maintenance Commissioning the system (cont.) Procedure Explanations and references Electric booster heater Enabling the built in instantaneous heating water heater Function not available The instantaneous heating water heater is not enabled for room heating or DHW ■ heating: Instantaneous heating water heater only is switched on only for frost protection of the heat pump and the system.
  • Page 93 ■ Installing and connecting the wireless remote control (accessory) Installation and service instructions for the wire- The Viessmann appliance (e.g. heat generator or ven- less remote control tilation unit) is connected to the wireless remote control via low power radio.

  • Page 94: Filling The System

    Commissioning, inspection, maintenance Commissioning the system (cont.) Note The wireless remote control is commissioned via the ViGuide app. Filling the system The filling of the system is menu-guided with the com- Please note missioning assistant. Filling and venting the system with the transport bracket loose can cause damage to the outdoor unit.
  • Page 95 Commissioning, inspection, maintenance Filling the system (cont.) Fig. 68 Filling starts automatically, once "Filling" has been called up in the commissioning assistant. 1. Connect the fill hose to the 3-way ball valve in the outdoor unit flow (indoor unit heating water inlet). 2.
  • Page 96 Commissioning, inspection, maintenance Filling the system (cont.) 3. Open the outdoor unit 3-way flow and return ball 4. Start the filling process in the commissioning assis- valve as shown in Fig. 68: Open in all directions tant. Allow the heating water to flow in via the fill hose. The filling of the 1st consumer circuit begins.
  • Page 97 Commissioning, inspection, maintenance Building up the system pressure Fig. 69 Filling the system with the filling function is completed. 5. As soon as the required system pressure has been The "Build up system pressure" function then starts reached, end the process in the commissioning automatically.

  • Page 98: Venting The System

    Commissioning, inspection, maintenance Building up the system pressure (cont.) 7. Check the internal and on-site hydraulic connec- 8. Thermally insulate the hydraulic connections. tions for leaks. Recommended test pressure: 2 to 2.5 bar (0.2 to 0.25 MPa) Danger There is a risk of electric shock from escap- ing heating water or DHW.

  • Page 99: 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. Some compo- refrigerant circuit. nents on PCBs remain live even after the power ■...

  • Page 100: Testing The Anode Connection

    Commissioning, inspection, maintenance Filling and venting the DHW cylinder on the DHW side 1. Open all DHW draw-off points in the building. 3. Once air stops coming out of the DHW draw-off point, the DHW cylinder is completely filled. 2. Open the on-site drinking water supply. Testing the anode connection 1.

  • Page 101: Replacing The Protective Magnesium Anode

    Commissioning, inspection, maintenance Checking the anode earth current with an anode tester 1. Remove thermal insulation 2. Remove earth cable from protective magne- sium anode 3. Connect the tester (measuring range up to 5 mA) in series across tab of protective magnesium anode and earth cable Anode earth Protective magnesium anode...
  • Page 102 Commissioning, inspection, maintenance Draining the appliance on the DHW side (cont.) Fig. 72 Thermal insulation Protective magnesium anode Earth cable Gasket 6. Insert a hose into the DHW cylinder. Drain with a pump. Please note Negative pressure in the DHW cylinder can cause material damage.
  • Page 103 Commissioning, inspection, maintenance Checking all connections on the heating water and DHW sides for leaks Danger Please note There is a risk of electric shock from escaping Leaking hydraulic connections lead to appliance heating water or DHW. damage. When commissioning and after carrying out ■...
  • Page 104 Commissioning, inspection, maintenance Testing the refrigerant circuit Pressure equipment in the refrigerant circuit according to Pressure Equipment Direc- tive 2014/68/EU Outdoor unit with 1 fan Pipework PS x DN Category Pipework according to article 4, para- < DN 25 < 546 barmm —...

  • Page 105: Checking The Refrigerant Circuit For Leaks

    Test the quality of the heating water: See chapter "Fill and top-up water". ■ Test the safety chain annually: Request information about the test procedure from Viessmann Technical Maintenance after max. 12 years for outdoor units Service. with 1 and 2 fans Replace the high pressure switch PSH at least every ■...

  • Page 106: Checking That The Fan In The Outdoor Unit Can Run Freely

    Commissioning, inspection, maintenance Cleaning the filter in the ball valve 90° 90° Spanner size 27 Spanner size 19 Fig. 74 4. Rinse the filter under running water. 5. Refit filter in reverse order (steps 3 to 1 in reverse order). Torque for the top cover: 10.0 0.5 Nm...
  • Page 107 Commissioning, inspection, maintenance Cleaning the outdoor unit heat exchanger (evaporator) A dirty heat exchanger (evaporator) reduces heating Cleaning with compressed air output and may cause the heat pump to shut down. We recommend cleaning the heat exchanger (evapo- 1. Open the outdoor unit casing. rator) regularly.
  • Page 108 Commissioning, inspection, maintenance Cleaning the condensate pan and condensate drain (cont.) Danger Please note Easily flammable liquids and materials (e.g. Commercially available domestic cleaning naphtha/petrol, solvents, cleaning agents, paints agents and special cleaning agents can damage or paper) can cause deflagration and fire. the condensate pan.

  • Page 109: Cleaning The Dhw Cylinder

    Commissioning, inspection, maintenance Cleaning the condensate pan and condensate drain (cont.) Note The following information applies to outdoor units with 1 and 2 fans. The outdoor unit with 2 fans is shown as an example. Fig. 75 Apertures in the base plate Condensate pan Condensate drain 3.
  • Page 110 Commissioning, inspection, maintenance Cleaning the DHW cylinder (cont.) 1. Shut off the drinking water supply. Ensure ade- quate ventilation in the DHW pipework by opening a cold and hot water tap. Remove the thermal insulation. Danger The uncontrolled escape of DHW can cause scalding and building damage.

  • Page 111: Checking The Indoor Unit Electrical Connections For Firm Seating

    Commissioning, inspection, maintenance Cleaning the DHW cylinder (cont.) 04. Insert a hose into the DHW cylinder. Drain with a 07. Use a chemical cleaning agent to remove hard pump. deposits that cannot be removed with a high pres- sure cleaner. Please note Negative pressure in the DHW cylinder can Danger...

  • Page 112: Closing The Heat Pump

    Separate service instructions "System con- figuration and diagnosis for heat pumps with 1. Call up the "Actuator test" in the ViGuide app. Viessmann One Base" 2. Select the following settings for the "4/3-way valve position": Select a setting of "0 %".

  • Page 113: Adjusting The Heating Curve

    Commissioning, inspection, maintenance Closing the heat pump (cont.) Please note Close the heat pump after completing all work. Leaking hydraulic connections lead to appliance damage. ■ Check the internal and on-site hydraulic con- nections for leaks. In the event of leaks, switch off the appliance ■...

  • Page 114: Instructing The System User

    Commissioning, inspection, maintenance Entering the contractor's contact details The system operator can call up contact details when "Contractor contact details" required and notify the contractor. 4. Enter contact details. Tap the following buttons: to confirm "Information" Instructing the system user The system installer should hand the operating instruc- Equipment and functions of the heating system must tions to the system user and instruct the user in oper-...

  • Page 115: Service Menu

    System configuration and diagnostics Service menu Calling up the service menu Tap the following buttons: 4. Confirm with 1. " " 5. Select required menu. "Service" Note Not all menus will be available, depending on the 3. Enter password "viservice". system equipment level.

  • Page 116: System Configuration

    System configuration and diagnostics Service menu (cont.) Resetting all passwords to delivered condition Tap the following buttons: 5. Confirm with 1. Request the master password from Viessmann 6. "Change passwords" Technical Service. 7. "Reset all passwords" 2. " " 8. Enter master password.

  • Page 117: Refrigerant Circuit

    System configuration and diagnostics System configuration (cont.) Parameter Descriptions of the parameters are available online: https://link.viessmann.com/tdoc/6200041 Fig. 79 Diagnostics Checking operating data Only the operating data that correspond to the actual "Service" system equipment level are shown. 3. Enter password "viservice".
  • Page 118 System configuration and diagnostics Diagnostics (cont.) CD E Refrigerant circuit overview 28.7 °C 68 % 46.2 °C 44.7 °C 59 % 46 % 16 °C 43 % 14.8 °C 22.6 °C 41 % 48.9 °C 40 % 6.3 bar 26.6 °C 46.7 °C 54.2 °C 16.4 bar...
  • Page 119 System configuration and diagnostics Checking subscribers All detected subscribers, e.g. CAN bus subscribers, "Service" are displayed. Possible subscribers: See "Subscriber numbers" in 3. Enter password "viservice". chapter "Calling up acknowledged messages". 4. Confirm with Tap the following buttons: 5. "Appliances detected" 1.
  • Page 120 System configuration and diagnostics Checking outputs (actuator test) (cont.) Display Meaning Heating circuit pump, heating/ ON/OFF Switch the internal secondary pump/heating circuit pump, heating/ cooling circuit 1 cooling circuit 1, on and off. Heating circuit pump, heating/ Only in conjunction with an external buffer cylinder: cooling circuit 2 External heating circuit pump, heating/cooling circuit 2 Set value...
  • Page 121 System configuration and diagnostics Checking outputs (actuator test) (cont.) DHW group Display Meaning Secondary circuit pump speed Set value Speed of internal secondary pump/heating circuit pump, heating/ cooling circuit 1 4/3-way valve position Set value 4/3-way valve position in % Secondary circuit (heating/cooling circuit 1 or exter- nal buffer cylinder) >...
  • Page 122 Troubleshooting Message display on the programming unit If there are messages pending in the system, the mes- sage and are displayed. The Lightguide flashes. Types of messages Meaning Status Operating message ■ No faults in system in normal operation ■ The cause of the message must be remedied.

  • Page 123: Troubleshooting Measures

    S1 on the cor- Communication module, service link (NB-IoT) responding extension module. The rotary switch was 71 to 84 Other Viessmann devices in the system net- set during installation. work To identify the extension module affected, check the...
  • Page 124 Indoor unit maintenance Overview of electrical terminal areas See page 57 onwards. Removing the programming unit and electronics module Danger Danger Contact with live components can lead to seri- The absence of system component earthing can ous injury from electric current. Some compo- lead to serious injury from electrical current and nents on PCBs remain live even after the power component damage in the event of an electrical...
  • Page 125 Indoor unit maintenance Removing the programming unit and electronics… (cont.) Removing the HPMU electronics module Remove programming unit: See previous chapter. After replacing the HPMU electronics module, repeat the commissioning procedure: See chapter "Commis- sioning". Fig. 83 Removing the EHCU electronics module Danger Remove programming unit: See chapter "Removing Contact with live components can lead to seri-...
  • Page 126 Indoor unit maintenance Removing the programming unit and electronics… (cont.) Fig. 84 Note No recommissioning is necessary following replace- ment of the EHCU electronics module.

  • Page 127: Overview Of Internal Components

    Indoor unit maintenance Overview of internal components Water pressure sensor 4/3-way valve High limit safety cut-out (STB), instantaneous heating water heater Flow sensor Secondary pump Instantaneous heating water heater Safety valve Flow temperature sensor Return temperature sensor Fig. 85 Expansion vessel Integrated buffer cylinder Draining indoor unit on the secondary side Danger...
  • Page 128 Indoor unit maintenance Removing hydraulic components and EPP… (cont.) Danger Please note Residual water will escape when the indoor unit Leaking hydraulic connections lead to appliance or hydraulic components are fitted or removed. damage. Contact of live components with water can lead ■...
  • Page 129 Indoor unit maintenance Removing hydraulic components and EPP… (cont.) Removing the expansion vessel 12 ± 1 Nm 4.5 ± 0.5 Nm Fig. 86...
  • Page 130 Indoor unit maintenance Removing hydraulic components and EPP… (cont.) Removing the instantaneous heating water heater 400 V 230 V Fig. 87...
  • Page 131 Indoor unit maintenance Removing hydraulic components and EPP… (cont.) Fig. 88 Observe the colour coding of the core wires connected to the high limit safety cut-out (as per IEC 60757): BK Black RD Red WH White...
  • Page 132 Indoor unit maintenance Removing hydraulic components and EPP… (cont.) Removing the sensors Removing the flow sensor Fig. 89...
  • Page 133 Indoor unit maintenance Removing hydraulic components and EPP… (cont.) Removing the secondary circuit temperature sensors Fig. 90...
  • Page 134 Indoor unit maintenance Removing hydraulic components and EPP… (cont.) Removing the water pressure sensor Fig. 91...
  • Page 135 Indoor unit maintenance Removing hydraulic components and EPP… (cont.) Removing the circulation pump head Fig. 92 Torque settings Torque settings for the circuit pump union nuts: ■ 2 Nm ± ■ Torque for the screws on the pump head: 1 Nm ±...
  • Page 136 Indoor unit maintenance Checking the temperature sensors Temperature sensor NTC 10 k Connection Ω Outside temperature sensor Luster terminals for sensors, terminal 5 and 6 ■ ■ Plug 1 on the HPMU electronics module ■ Cylinder temperature sensor Plug 5 on the HPMU electronics module ■...

  • Page 137: Checking The Temperature Sensors

    Indoor unit maintenance Checking the temperature sensors (cont.) Viessmann NTC 10 k (blue marking) Ω / °C R / k / °C R / k / °C R / k / °C R / k / °C R / k / °C R / k...

  • Page 138: Checking The Fuse

    Indoor unit maintenance Checking the water pressure sensor 0.45 Pressure Fig. 94 Checking the fuse Fuse F1 is located in the HPMU electronics module: 2. Open the HPMU electronics module. ■ See page 66. ■ Fuse F2 is located on the luster terminal for the heat 3.
  • Page 139 Outdoor unit maintenance Removing and fitting the outer casing The steps are shown using the example of the outdoor unit with 2 fans. ■ The procedure for the outdoor unit with 1 fan is iden- tical. ■ Fitting the outer casing: Carry out the steps in the reverse order.
  • Page 140 Outdoor unit maintenance Removing and fitting the outer casing (cont.) Removing the right-hand side casing Fig. 95...
  • Page 141 Outdoor unit maintenance Removing and fitting the outer casing (cont.) When fitting the right side panel, make sure it is positioned correctly: Fig. 96 Removing the top casing 1. Remove side casing, right: See Fig. 95. 2. Remove fan grille: See Fig. 98. For outdoor unit with 2 fans: Remove only the upper fan grille.
  • Page 142 Outdoor unit maintenance Removing and fitting the outer casing (cont.) TX 25 Fig. 97 Cover EPP support Air space cover Cover with gasket and sound insulation...

  • Page 143: Removing The Front Casing

    Outdoor unit maintenance Removing and fitting the outer casing (cont.) Removing the front casing TX 25 Fig. 98 Only for outdoor unit with 2 fans: Upper fan grille Lower fan grille 3. Remove side casing, right: See Fig. 95. 4. Remove fan grille and cover: See Fig. 98 and 97.
  • Page 144 Outdoor unit maintenance Removing and fitting the outer casing (cont.) TX 25 Fig. 99 Front panel Removing the left-hand side casing 1. Remove side casing, right: See Fig. 95. 3. Remove top cover: See Fig. 97. 2. Remove fan grille: See Fig. 98.
  • Page 145 Outdoor unit maintenance Removing and fitting the outer casing (cont.) TX 25 Fig. 100 Evaporator Removing the rear casing 1. Remove side casing, right: See Fig. 95. 2. Remove top cover: See Fig. 97.

  • Page 146: Overview Of Electrical Components

    Outdoor unit maintenance Removing and fitting the outer casing (cont.) TX 25 Fig. 101 Evaporator Back panel Overview of electrical components Danger Danger Contact with live components can lead to seri- The absence of system component earthing can ous injury from electric current. Some compo- lead to serious injury from electrical current and nents on PCBs remain live even after the power component damage in the event of an electrical...
  • Page 147 Outdoor unit maintenance Overview of electrical components (cont.) Outdoor unit with 1 fan Terminal strip, 230 V~ function components Fan terminal with fuse 6.3 A H (slow), 250 V~ Electronics terminal with fuse 6.3 A H (slow), 250 V~ Chokes VCMU refrigerant circuit controller Solenoid coil, 4-way diverter valve Ferrite...
  • Page 148 Coil, 4-way diverter valve Inverter Fig. 103 EMCF PCB with 400 V~/230 V~ power supply Terminal strip, 230 V~ function components Checklist for maintenance work Note Work on the refrigerant circuit must only be carried out by Viessmann Technical Services employees.
  • Page 149 AG145 and CuP 281a may be used. These are issued by an organisation with industry accreditation. used by Viessmann and comply with ISO 17672. This certificate confirms their competence in the safe ■...
  • Page 150 & Any replacement electrical components must be suitable for the ■ application and must correspond to the manufacturer’s specifi- cation. Only replace faulty components with genuine Viessmann spare parts. Carry out all component replacements in accordance with Viess- ■ mann guidelines. If required, consult Viessmann Technical Serv- ice.
  • Page 151 In areas where flammable atmospheres exist, only apply voltage ■ to components which are suitable for flammable atmospheres. Only use Viessmann original parts or parts approved by Viess- ■ mann. Other parts may result in refrigerant becoming ignited in the event of a leak.
  • Page 152 Outdoor unit maintenance Checklist for maintenance work (cont.) Measure Completed Comments Leak detection The following leak detection processes are suitable for appliances with flammable refrigerant: Leak detection with electronic refrigerant detectors: Electronic refrigerant detectors may not have the required sensi- ■...
  • Page 153 Outdoor unit maintenance Overview of internal components Danger Contact with live components can lead to seri- ous injury from electric current. Some compo- nents on PCBs remain live even after the power supply has been switched off. When working on the outdoor unit, isolate the ■...
  • Page 154 Outdoor unit maintenance Overview of internal components (cont.) 4-way diverter valve Condenser Secondary circuit flow temperature sensor Liquid gas temperature sensor, heating Liquid gas temperature sensor, condenser Schrader valve, high pressure side 1 Hot gas temperature sensor Accumulator (refrigerant receiver) Compressor High pressure switch PSH Electronic expansion valve 1...
  • Page 155 Outdoor unit maintenance Overview of internal components (cont.) Outdoor unit with 2 fans Fig. 105 Suction gas temperature sensor, evaporator Evaporator Secondary circuit flow temperature sensor Air intake temperature sensor Liquid gas temperature sensor, condenser Interior temperature sensor Hot gas temperature sensor Accumulator (refrigerant receiver) compressor Compressor Liquid gas temperature sensor, cooling...
  • Page 156 Outdoor unit maintenance Overview of internal components (cont.) Non-return valve High pressure sensor Liquid gas temperature sensor, heating Low pressure sensor Condenser Schrader valve, high pressure side 2 Accumulator (refrigerant receiver) Internal heat exchanger High pressure switch PSH Refrigerant circuit flowchart Labelling of the sensors in acc.
  • Page 157 Outdoor unit maintenance Refrigerant circuit flowchart (cont.) Heating mode Fig. 106 Evaporator Interior temperature sensor Air discharge Suction gas temperature sensor, evaporator Air intake temperature sensor 4-way diverter valve Air intake High pressure sensor Electronic expansion valve 1 High pressure switch PSH Liquid gas temperature sensor, heating Hot gas temperature sensor Schrader valve, high pressure side 2...
  • Page 158 Outdoor unit maintenance Refrigerant circuit flowchart (cont.) Cooling mode Fig. 107 Evaporator Interior temperature sensor Air discharge Suction gas temperature sensor, evaporator Air intake temperature sensor 4-way diverter valve Air intake High pressure sensor Electronic expansion valve 1 High pressure switch PSH Liquid gas temperature sensor, heating Hot gas temperature sensor Schrader valve, high pressure side 2...
  • Page 159 Outdoor unit maintenance Extracting the refrigerant (cont.) Also take into account the following points: 07. Extract the refrigerant from all parts of the refriger- ■ Only extraction equipment authorised for R290 (pro- ant circuit using the extraction equipment. If nec- pane) that has been regularly inspected may be essary, open the electronic expansion valves with used.

  • Page 160: Filling The Refrigerant Circuit

    Outdoor unit maintenance Extracting the refrigerant (cont.) 15. Once the refrigerant has been completely evacu- 16. Affix a label to the outdoor unit in a clearly visible ated, close the Schrader valves so they are gas- position, containing the following information, with tight.
  • Page 161 Outdoor unit maintenance Filling the refrigerant circuit (cont.) 6. Affix a label to the heat pump in a clearly visible 8. Seal the sealing caps of the low pressure and high position, containing the following information, with pressure Schrader valves: See chapter "Outdoor date and signature: unit maintenance: Overview of internal compo- ■...
  • Page 162 Outdoor unit maintenance Removing the hydraulic components (cont.) Removing the float air vent valve with quick-action air vent valve G 1¼ 50 ±2 Nm 7 ±1 Nm G 1¼ 20 ±2 Nm 7 ±1 Nm Fig. 109 Stainless steel float air vent valve Plastic float air vent valve...
  • Page 163 Outdoor unit maintenance Removing the hydraulic components (cont.) Removing the ball valve with filter G 1¼ 50 ±2 Nm Fig. 110 Checking the temperature sensors Temperature sensors are connected to the VCMU refrigerant circuit controller in the outdoor unit. Temperature sensor NTC 10 k Connection Ω...
  • Page 164 Outdoor unit maintenance Checking the temperature sensors (cont.) NTC 10 k (no marking) Ω / °C R / k / °C R / k / °C R / k / °C R / k / °C R / k / °C R / k ϑ...

  • Page 165: Checking The Fuses

    Outdoor unit maintenance Checking the pressure sensors Pressure Fig. 111 Low pressure sensor High pressure sensor Checking the fuses The fuses are located next to the VCMU refrigerant cir- 1. Switch off the power supply. cuit controller: See page 146. 2.

  • Page 166: Hydraulic Parameter Report

    Commissioning/service reports Commissioning/service reports Hydraulic parameter report Settings and test values Set value Commissioning Maintenance/ service Check external heating/cooling circuit pumps Circulation pump type Circulation pump stage Primary circuit commissioning Air intake temperature °C Air discharge temperature °C Temperature differential (air intake/ discharge) Δ...

  • Page 167: Specification

    Specification Specification Heat pumps with 400 V~ outdoor unit Type AWOT-E-AC/AWOT-E-AC-AF 151.A 10 Heating performance data to EN 14511 (A2/W35) Rated heating output Power consumption 1.41 1.76 2.00 Coefficient of performance in heating mode (COP) ε Output control 2.2 to 11.0 2.6 to 12.3 3.0 to 13.7 Heating performance data to EN 14511 (A7/W35,...
  • Page 168 Specification Specification (cont.) Type AWOT-E-AC/AWOT-E-AC-AF 151.A 10 Cooling performance data average climatic condi- tions (A35/W7) Rated cooling capacity P 6.90 8.11 8.93 rated Seasonal cooling energy efficiency ratio (SEER) 3.60 3.80 4.10 Cooling performance data to EN 14511 (A35/W18) Rated cooling capacity 9.50 11.20 13.30...
  • Page 169 Specification Specification (cont.) Type AWOT-E-AC/AWOT-E-AC-AF 151.A 10 Max. power consumption Outdoor unit 2 x 140 2 x 140 2 x 140 ■ Control unit/PCB ■ Indoor unit Integral secondary pump/heating circuit pump, ■ heating/cooling circuit 1 (PWM) Energy efficiency index EEI of the circulation ≤...
  • Page 170 Specification Specification (cont.) Type AWOT-E-AC/AWOT-E-AC-AF 151.A 10 Outdoor unit dimensions Total length Total width 1144 1144 1144 Total height 1382 1382 1382 Indoor unit dimensions Total length Total width Total height 1900 1900 1900 Total weight Indoor unit with 1 integrated heating/cooling circuit Empty ■...
  • Page 171 Specification Specification (cont.) Type AWOT-M-E-AC/ 151.A 04 AWOT-M-E-AC-AF Heating performance data to EN 14511 (A7/W35, 5 K spread) Rated heating output Fan speed Air flow rate 1813 1954 2125 4045 4188 4331 Power consumption 0.80 0.98 1.19 1.46 1.62 1.86 Coefficient of performance in heat- ε...
  • Page 172 Specification Specification (cont.) Type AWOT-M-E-AC/ 151.A 04 AWOT-M-E-AC-AF Cooling performance data to EN 14511 (A35/W7) Rated cooling capacity Fan speed Power consumption 0.90 1.03 1.17 1.18 1.65 1.85 Coefficient of performance in cool- ing mode (EER) Output control 1.8 to 4.0 1.8 to 4.8 1.8 to 5.0 3.9 to 7.2 4.2 to 8.0 4.5 to 8.7 Cooling performance data aver- age climatic conditions (A35/W7)
  • Page 173 Specification Specification (cont.) Type AWOT-M-E-AC/ 151.A 04 AWOT-M-E-AC-AF Outdoor unit electrical values Rated voltage, compressor 1/N/PE 230 V/50 Hz Max. operating current, compressor 15.5 0.99 0.99 0.99 0.99 0.99 0.99 φ Compressor starting current, inver- < 10 < 10 < 10 <...
  • Page 174 Specification Specification (cont.) Type AWOT-M-E-AC/ 151.A 04 AWOT-M-E-AC-AF Mobile data transfer WiFi Transfer standard IEEE 802.11 b/g/n ■ Frequency band 2400 to 2483.5 ■ Max. transmission power ■ Low power radio Transfer standard IEEE 802.15.4 ■ Frequency band 2400 to 2483.5 ■...
  • Page 175 Specification Specification (cont.) Type AWOT-M-E-AC/ 151.A 04 AWOT-M-E-AC-AF Total weight Empty ■ With filled buffer cylinder ■ Outdoor unit Permissible operating pressure, secondary side Heating water Connections with connection pipes supplied Heating water flow/return, heating Cu 28 x Cu 28 x Cu 28 x Cu 28 x Cu 28 x...
  • Page 176 Specification Specification (cont.) Type AWOT-M-E-AC/ 151.A 04 SP 06 SP 08 SP 10 SP 13 SP 16 SP AWOT-M-E-AC-AF Heating performance data to EN 14511 (A7/W35, 5 K spread) Rated heating output Fan speed Air flow rate 1813 1954 2125 4045 4188 4331...
  • Page 177 Specification Specification (cont.) Type AWOT-M-E-AC/ 151.A 04 SP 06 SP 08 SP 10 SP 13 SP 16 SP AWOT-M-E-AC-AF Cooling performance data to EN 14511 (A35/W7) Rated cooling capacity Fan speed Power consumption 0.90 1.03 1.17 1.18 1.65 1.85 Coefficient of performance in cool- ing mode (EER) Output control 1.8 to 4.0 1.8 to 4.8 1.8 to 5.0 3.9 to 7.2 4.2 to 8.0...
  • Page 178 Specification Specification (cont.) Type AWOT-M-E-AC/ 151.A 04 SP 06 SP 08 SP 10 SP 13 SP 16 SP AWOT-M-E-AC-AF Indoor unit electrical values Rated voltage 1/N/PE 230 V/50 Hz ■ Internal fuse protection 6.3 A H (slow)/250 V~ ■ Instantaneous heating water heater Heating output ■...
  • Page 179 Specification Specification (cont.) Type AWOT-M-E-AC/ 151.A 04 SP 06 SP 08 SP 10 SP 13 SP 16 SP AWOT-M-E-AC-AF Refrigerant circuit Refrigerant R290 R290 R290 R290 R290 R290 Safety group ■ Charge weight ■ Global warming potential (GWP) 0.02 0.02 0.02 0.02 0.02...
  • Page 180 Specification Specification (cont.) Type AWOT-M-E-AC/ 151.A 04 SP 06 SP 08 SP 10 SP 13 SP 16 SP AWOT-M-E-AC-AF Connections with connection pipes supplied Heating water flow/return, heating Cu 28 x Cu 28 x Cu 28 x Cu 28 x Cu 28 x Cu 28 x circuits or heating water buffer cylin-...

  • Page 181: Commissioning Order

    Preferred appointment: Date Time Date Time The work requested from Viessmann will be billed to me/us in accordance with the latest Viessmann pricelist. Place/date Signature Final decommissioning and disposal Viessmann products can be recycled. Components and substances from the system are not part of ordi- nary domestic waste.
  • Page 182 Appendix Final decommissioning and disposal (cont.) Danger Frost protection: Escaping refrigerant can lead to explosions that ■ To avoid frost damage, completely remove heating result in very serious injuries. water from the connection pipes and the condenser Do not introduce any power sources or ignition (not required with frost-free storage).

  • Page 183: Ordering Individual Parts

    Ordering individual parts Ordering individual parts for accessories Please affix accessory labels with part numbers here. Please specify the relevant part no. when ordering individual parts.
  • Page 184 Certificates Declaration of conformity We, Viessmann Climate Solutions SE, D-35108 Allen- dorf, declare as sole responsible body that the named product complies with the European directives and supplementary national requirements in terms of its design and operational characteristics. Viessmann Cli-...
  • Page 185 Keyword index Keyword index Condensate drain........17, 18, 37, 107 Access point...............85 – In seepage layer............29 – Switching on/off............. 119 – Via drain pipe............28 Accumulator............. 157, 158 – Via waste water system.......... 29 Actuator test............. 119 – Without drain pipe........... 28 Air discharge..............
  • Page 186 Keyword index Keyword index (cont.) Electrical connections Foundations............34, 35 – Checking..............111 Free running of fan, checking........106 – Checking outdoor unit..........111 Front panels............... 82 – Overview............124, 146 – Fitting..............82 Electrical terminal areas..........57 – Removing..............55 Electrical terminal areas, opening......57 Frost protection for foundations..
  • Page 187 Keyword index Keyword index (cont.) Installation information..........22 Operating states, checking........117 Installation location requirements Operational reliability..........42 – Indoor unit............... 41 Operation without outdoor unit........51 Instantaneous heating water heater...13, 127, 130 Outdoor unit – Power cable............54 – Cable lengths............54 –...
  • Page 188 Keyword index Keyword index (cont.) Pressure points............44 Room temperature sensor........136 Pressure reducer............48 Routing cables............59 Pressure resistance – Testing............152, 160 Pressure sensor..........127, 134 Safety check.............150 Pressure sensors, checking........165 Safety goggles............105 Product information............ 13 Safety valve..........48, 127, 159 Programming unit.............124 Safety zone............
  • Page 189 Keyword index Keyword index (cont.) TNC system............... 82 Top-up water............94, 96 Wall mounting.............37 Torque..............128 – Bracket set.............. 36 Torque settings............128 – Outdoor unit............36 Total weight..........170, 175, 179 Water pressure sensor, checking......138 Transport..............19 Water quality............94, 96 –...
  • Page 192 Viessmann Climate Solutions SE Viessmann Limited 35108 Allendorf / Germany Hortonwood 30, Telford Telephone: +49 6452 70-0 Shropshire, TF1 7YP, GB Fax: +49 6452 70-2780 Telephone: +44 1952 675000 www.viessmann.com Fax: +44 1952 675040 E-mail: info-uk@viessmann.com...

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