Viessmann vitocal 350-a Installation And Service Instructions Manual
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Viessmann vitocal 350-a Installation And Service Instructions Manual

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VIESMANN
Installation and service
instructions
for contractors
Vitocal 350-A
Type AWHI 351.A
Type AWHO 351.A
Air/water heat pump with electric drive, 400 V~
For applicability, see the last page
VITOCAL 350-A
Please keep safe.
5692 878 GB
7/2010

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  • Page 1 VIESMANN Installation and service instructions for contractors Vitocal 350-A Type AWHI 351.A Type AWHO 351.A Air/water heat pump with electric drive, 400 V~ For applicability, see the last page VITOCAL 350-A Please keep safe. 5692 878 GB 7/2010...

  • Page 2: Safety Instructions

    Safety instructions Safety instructions Please follow these safety instructions closely to prevent accidents and mate- rial losses. Safety instructions explained ■ The Code of Practice of relevant trade associations Danger ■ All current safety regulations as This symbol warns against the defined by DIN, EN, DVGW, VDE and risk of injury.
  • Page 3 Please note Repairing components that fulfil a safety function can compromise the safe operation of your sys- tem. Replace faulty components only with original Viessmann spare parts. Auxiliary components, spare and wearing parts Please note Spare and wearing parts that...

  • Page 4: Table Of Contents

    Index Index Installation instructions Preparing for installation Product information....................General information - electrical connection............Internal heat pump type AWHI 351.A..............External heat pump type AWHO 351.A..............14 Overview of possible system diagrams..............25 System example 1, ID: 4605306_1006_01............26 System example 2, ID: 4605095_1005_02............33 DHW heating......................
  • Page 5 Index Index (cont.) Certificates Declaration of conformity..................154 Keyword index....................155...

  • Page 6: Preparing For Installation

    Preparing for installation Product information Vitocal 350-A, AWHI 351.A, AWHO 351.A Air/water heat pump without integral circulation pump (secondary pump) and without 3-way diverter valve. A secondary pump assembly (secondary pump and circulation pump for cylinder heating) is available as an accessory.

  • Page 7: Internal Heat Pump Type Awhi 351.A

    Preparing for installation Internal heat pump type AWHI 351.A Installation room requirements Please note ■ Observe minimum clearances. Incorrect ambient conditions can ■ Level the appliance. lead to system damage and can ■ Required room height at least 2.10 m. put the safe operation at risk.
  • Page 8 Preparing for installation Internal heat pump type AWHI 351.A (cont.) Positioning Minimum clearances and dimensions when positioning in a corner Note Prior to breaking out wall outlets, check the static data of the building and the wall concerned. If necessary, install a lintel. For corner installation (l.h.
  • Page 9 C Wall outlet (can be trimmed to the G Hydraulic and condensate connec- correct size from the outside with a tions saw. Observe plaster thickness) D Compression sealing strip and acrylic airtight seam (all-round) Dimensions Vitocal 350-A, type AWHI 351.A10 AWHI 351.A14 AWHI 351.A20 1020 1180 1148...
  • Page 10 Preparing for installation Internal heat pump type AWHI 351.A (cont.) Minimum clearances and dimensions when positioning against a wall Discharge side on the left (delivered condition); hydraulic connections on the right (on site) Wall outlet on the discharge side Heat pump (made from EPP) Appliance connector, air duct on Weather grille...
  • Page 11 Clearance X in mm Requires partition duct parts parts in mm wall C 1000 1050 1350 1400 1700 1750 2050 2100 2400 2450 2750 2800 3100 3150 3450 3500 3800 Dimensions Vitocal 350-A, type AWHI 351.A10 AWHI 351.A14 AWHI 351.A20 1020 1180 1148...
  • Page 12 Preparing for installation Internal heat pump type AWHI 351.A (cont.) Connections Note Hydraulic pipes, cables and condensate drain can be routed out of the heat pump to the left or right. A Cable entries C Condensate drain B Heating water return/DHW cylinder D Heating water flow/DHW cylinder return (see page 57) flow (see page 57)
  • Page 13 Preparing for installation Internal heat pump type AWHI 351.A (cont.) Dimensions Vitocal 350-A, type AWHI 351.A10 AWHI 351.A14 AWHI 351.A20 1030 1200 Cables/leads A Heat pump control unit F Power cable, instantaneous heating B Power cable for heat pump control water heater (if installed), max.

  • Page 14: External Heat Pump Type Awho 351.A

    Preparing for installation Internal heat pump type AWHI 351.A (cont.) Required cable lengths: 0.6 m from wall outlet ■ For the heat pump control unit (cable ■ Inside the heat pump (to the control wall outlet centrally directly below the panel): heat pump control unit): 3.4 m plus wall clearance for cable...
  • Page 15 Preparing for installation External heat pump type AWHO 351.A (cont.) Positioning Minimum clearances 1500 1500 Foundations Position the heat pump horizontally on a ■ The condensate generated by the air permanently solid surface. We recom- (subject to temperature and relative mend laying concrete foundations as humidity up to 20 litres/h) must be shown in the following diagrams.
  • Page 16 Preparing for installation External heat pump type AWHO 351.A (cont.) Vitocal 350-A, type Weight (with silencer hoods) AWHO 351.A10 325 kg AWHO 351.A14 335 kg AWHO 351.A20 400 kg...
  • Page 17 Preparing for installation External heat pump type AWHO 351.A (cont.) Foundation dimensions Plan view of the foundations...
  • Page 18 BSt 500 S and M power cable to the control panel ■ Reinforcement with all-round wire H Condensate drain DN 40 mesh made of Q 257 A Vitocal 350-A, type Dimen Dim. b Observe local requirements and the sion a in mm...
  • Page 19 Preparing for installation External heat pump type AWHO 351.A (cont.) Connection dimensions, hydraulic connection set in the foundations A Concrete foundations as previously E Connecting cables (LV and control described and according to local cables) and power cable to the con- requirements and in accordance trol panel with the standard rules of building...
  • Page 20 Preparing for installation External heat pump type AWHO 351.A (cont.) Connections Side view, shown without silencer hood. Note Openings for electric cables/leads are cut on site into the insulation mat in the bottom panel (see page 66).
  • Page 21 B DHW cylinder flow/heating water flow (for installation see page 58) C DHW cylinder return/heating water return (for installation see page 58) D Silencer hoods (for installation see page 53) Dimensions Vitocal 350-A, type AWHO 351.A10 AWHO 351.A14 AWHO 351.A20 1380 1530 1700...
  • Page 22 Preparing for installation External heat pump type AWHO 351.A (cont.) Cables/leads and hydraulic lines Routing lines under ground and through the outside wall A Clearance building wall – founda- D Two connecting cables inside KG tions: conduit DN 100 (on site), fully wired ■...
  • Page 23 Preparing for installation External heat pump type AWHO 351.A (cont.) K Expansion vessel with safety Power cable to control panel B assembly (accessory) L Route connecting cable (LV cable Outside the building, run the power cable < 42 V) D and power cable B to to control panel B as an earth cable the control panel as far apart as pos- (NYY), or route a NYM cable inside a KG...
  • Page 24 Preparing for installation External heat pump type AWHO 351.A (cont.) Required cables/leads and hydraulic lines B Power cable for compressor/fan Q Instantaneous heating water heater (400 V/50 Hz; 3/N/PE) (accessory; install in building) R Flow temperature sensor secondary Recommended cable: 5 x 2.5 mm circuit (install in the heating water flexible flow inside the buildings)

  • Page 25: Overview Of Possible System Diagrams

    Preparing for installation External heat pump type AWHO 351.A (cont.) U Instantaneous heating water heater Y Power cable for heat pump control control unit 230 V/50 Hz Recommended cable: 5 x 1.5 mm Recommended cable: 3 x 1.5 mm V Power cable, instantaneous heating (5 x 1.5 mm with power-OFF) water heater (if installed), max.

  • Page 26: System Example 1, Id: 4605306_1006_01

    Preparing for installation Overview of possible system diagrams (cont.) Components System scheme (parameter 7000) Heating circuit – – – – – – – – – – – – – – – – – – DHW cylinder – – – – —...
  • Page 27 Preparing for installation System example 1, ID: 4605306_1006_01 (cont.) Hydraulic installation scheme -8/145- -8/145- -8/145- --2/F12-- -2/225.1--76- -105/2- --74/20-- -105/20- -105/52- --2/225.2;3-- ---47/R1--41-- --2/212.3-- -2/211.4- --2/F8-- -A/137-...
  • Page 28 System example 1, ID: 4605306_1006_01 (cont.) Required equipment Pos. Description Heat pump Vitocal 350-A Heat pump control unit Vitotronic 200, type WO1A, with connecting cables Outside temperature sensor ATS Instantaneous heating water heater, 3, 6, or 9 kW Circulation pump for cylinder heating UPSB Secondary pump UP Flow temperature sensor (for type AWHI 351.A inside the appliance) VTS...
  • Page 29 Preparing for installation System example 1, ID: 4605306_1006_01 (cont.) Pos. Description Heating circuit without mixer A1 Radiator heating circuit A1 Remote control Vitotrol 200A for heating circuit A1 Heating circuit pump A1 Heating circuit with mixer M2 Underfloor heating circuit M2 with mixer controlled by the heat pump control unit Remote control Vitotrol 200A for heating circuit M2 Flow temperature sensor, heating circuit with mixer M2...
  • Page 30 Preparing for installation System example 1, ID: 4605306_1006_01 (cont.) 100 W 212.2 UP A1 X2.N 130 W 211.4 UPSB X2.N <16A X3.18 X2.1 230 V / 50 Hz X1.1 50 W 212.3 X2.N 130 W 211.2 X2.N 211.3 400 V, 50 Hz 224.4 3 / N / PE X2.N...
  • Page 31 Preparing for installation System example 1, ID: 4605306_1006_01 (cont.) HK A1 HK M2 HK M3 230 V/ 50 Hz 1 / N / PE 230 V/ 50 Hz N 20 N 18 PT500 PT500 PT500 Ni500 Ni500 VTS M2 PT500...
  • Page 32 Preparing for installation System example 1, ID: 4605306_1006_01 (cont.) 16 A 16 A 16 A 400 V, 50 Hz Required parameter settings Set the required parameters during com- missioning; see from page 116. Parameter Setting "System definition" ■ "System scheme 7000" "6"...

  • Page 33: System Example 2, Id: 4605095_1005_02

    Preparing for installation System example 2, ID: 4605095_1005_02 Setting system scheme 10 Note ■ 1 heating circuit without mixer (A1) ■ Show type AWHO 351.A. ■ 2 heating circuits with mixer (M2, M3) For type AWHI 351.A the instantane- ■ DHW heating with primary store sys- ous heating water heater (accessory) is installed inside the heat pump.
  • Page 34 Preparing for installation System example 2, ID: 4605095_1005_02 (cont.) Required equipment Pos. Description Heat pump Vitocal 350-A Heat pump control unit Vitotronic 200, type WO1A, with connecting cables Outside temperature sensor ATS Circulation pump for cylinder heating UPSB Secondary pump UP Flow temperature sensor (for type AWHI 351.A inside the appliance) VTS...
  • Page 35 Preparing for installation System example 2, ID: 4605095_1005_02 (cont.) Pos. Description Heating circuit with mixer M2 Underfloor heating circuit M2 with mixer controlled by the heat pump control unit Remote control Vitotrol 200A for heating circuit M2 Flow temperature sensor, heating circuit with mixer M2 Temperature limiter as maximum temperature limiter for underfloor heating systems ■...
  • Page 36 Preparing for installation System example 2, ID: 4605095_1005_02 (cont.) 100 W 212.2 UP A1 X2.N 130 W 211.4 UPSB X2.N 50 W 212.3 X2.N 130 W 211.2 X2.N 100 W 224.7 X2.N 130 W 224.6 X2.N 225.3 OPEN X2.N 225.2 100 W 225.1 UP M2...
  • Page 37 Preparing for installation System example 2, ID: 4605095_1005_02 (cont.) HK A1 HK M2 HK M3 230 V/ 50 Hz 1 / N / PE UP M3 VTS M3 230 V/ 50 Hz 1 / N / PE 400 V, 50 Hz...
  • Page 38 Preparing for installation System example 2, ID: 4605095_1005_02 (cont.) PT500 PT500 PT500 PT500 Ni500 Ni500 VTS M2 PT500 16 A 16 A 16 A 400 V, 50 Hz Required parameter settings Set the required parameters during com- missioning; see from page 116.
  • Page 39 Preparing for installation System example 2, ID: 4605095_1005_02 (cont.) Parameter Setting "System definition" ■ "System scheme 7000" "6" ■ "Swimming pool 7008" "1" ■ "External extension 7010" "1" ■ "Common flow temperature sensor system "1" 701B" DHW heating: "Time program DHW" Set time program (see oper- ating instructions) "Time prog.

  • Page 40: Dhw Heating

    Preparing for installation DHW heating Only AWHI 351.A10, AWHO 351.A10: DHW cylinder with internal indirect coil Hydraulic installation scheme Heat pump interface WW DHW KW Cold water Required equipment Pos. Description DHW cylinder Immersion heater EHE (accessory; provide wiring on site; use only as an alternative to the instantaneous heating water heater or external heat source for reheating DHW) DHW circulation pump (optional)
  • Page 41 Preparing for installation DHW heating (cont.) Electrical installation scheme 50 W 212.3 X2.N 130 W 211.4 UPSB X2.N L1 L2 L3 N 100 W 224.7 X2.N PT500 PT500 Required parameter settings Set the required parameters during com- missioning; see from page 116. Required parameter settings Setting "System definition"...
  • Page 42 Preparing for installation DHW heating (cont.) Cylinder with primary store system Hydraulic installation scheme Heat pump interface WW DHW KW Cold water Required equipment Pos. Description Cylinder Immersion heater EHE (accessory; provide wiring on site; use only as an alternative to the instantaneous heating water heater or external heat source for reheating DHW) DHW circulation pump (optional) Cylinder temperature sensor, top...
  • Page 43 Preparing for installation DHW heating (cont.) Electrical installation scheme 50 W 212.3 X2.N 130 W 211.4 UPSB X2.N L1 L2 L3 N 100 W 224.7 X2.N 224.6 X2.N PT500 PT500 Required parameter settings Set the required parameters during com- missioning; see from page 116. Required parameter settings Setting "System definition"...

  • Page 44: Installation Sequence

    Installation sequence Removing the transport brackets Please note Please note Avoid damaging the appliance Transport brackets during handling. must be removed. Never put weight on the top, front or side panels of the appliance. Please note Installing a compressor at a steep angle inside the heat pump can result in equipment damage.
  • Page 45 Installation sequence Removing the transport brackets (cont.)

  • Page 46: Fitting The Outer Panels

    Installation sequence Fitting the outer panels Installation using type AWHI 351.A as an example. Note ■ Steps 4 and 5 are only required for type AWHI 351.A. ■ For type AWHO 351.A: Fit silencer hoods before the top panel. Fitting the silencer hoods: see the fol- lowing chapter.
  • Page 47 Installation sequence Fitting the outer panels (cont.)
  • Page 48 Installation sequence Fitting the outer panels (cont.) Installation of side panels when air discharge is on the left (delivered condition for type AWHI 351.A)
  • Page 49 Installation sequence Fitting the outer panels (cont.) Installation of side panels when air discharge is on the right Note To ease installation, apply a soapy solution to the edges of the side panel insula- tion.
  • Page 50 Installation sequence Fitting the outer panels (cont.)
  • Page 51 Installation sequence Fitting the outer panels (cont.)
  • Page 52 Installation sequence Fitting the outer panels (cont.) Note For type AWHO 351.A, the silencer hoods are fitted before fitting the top panel. Fitting the silencer hoods: see the fol- lowing chapter.

  • Page 53: Fitting Silencer Hoods (Only Type Awho 351.A)

    Installation sequence Fitting silencer hoods (only type AWHO 351.A)

  • Page 54: Installing The Heat Pump

    Installation sequence Installing the heat pump Connecting the primary circuit (only type AWHI 351.A) See also installation information from 1. Centre the wall outlets in the wall cut- page 8. outs and plaster them in correctly. Note 2. Finish off the external part of the ven- Make the ventilation and extract air aper- tilation and extract air ducts with tures burglar-proof.
  • Page 55 Installation sequence Installing the heat pump (cont.) Type AWHI 351.A:...
  • Page 56 Installation sequence Installing the heat pump (cont.) Type AWHO 351.A:...

  • Page 57: Connecting The Heating Circuits And Condensate Drain

    Installation sequence Connecting the heating circuits and condensate drain Note ■ In underfloor heating circuits, integrate a temperature limiter on site for limiting the maximum temperature of under- floor heating systems. ■ To ensure the minimum flow rate (see specification), fit an overflow valve in every heating circuit (except single pipe heating circuits).
  • Page 58 Installation sequence Connecting the heating circuits and condensate… (cont.) C Heating water return/DHW cylinder return Route the condensate hose out of the heat pump through the centre opening and connect to the on-site sewer via a siphon (min. backup level 60 mm). Technical guide Type AWHO 351.A 1.
  • Page 59 Installation sequence Connecting the heating circuits and condensate… (cont.) 3. Push heating water flow/DHW cylin- 5. Route hydraulic lines A and C out der flow A onto the connector and of the heat pump and connect with secure with open-ended pipe clip. the lines in the foundations duct.
  • Page 60 Installation sequence Connecting the heating circuits and condensate… (cont.) 1. Fit pipe section with sensor well A. 3. Connect sensor lead plug D and lead to the heat pump control unit. 2. Secure flow temperature sensor for (Lead with plug, 2.0 m long; extend secondary circuit C with spring clip on site if required).

  • Page 61: Electrical Connections In The Control Panel

    Installation sequence Electrical connections in the control panel Opening the control panel A Control panel with electric compo- B Internal earth conductor nents 1. Undo 2 screws at the bottom of the Note control panel cover. In the delivered condition, the coding card is affixed inside the control panel.
  • Page 62 Installation sequence Electrical connections in the control panel (cont.) Overview of electrical connections in the control panel AWHI/AWHO 351.A10, AWHI/AWHO 351.A14...
  • Page 63 Installation sequence Electrical connections in the control panel (cont.) AWHI/AWHO 351.A20 A Fan fuse 6.3 A (slow) L Mains terminals (400 V~) for com- B Phase monitor pressor and fan with contact shield C Compressor contactor and power-OFF seal if required D Distributor PCB M Full wave soft starter E Connecting cable: low voltage cable...
  • Page 64 Installation sequence Electrical connections in the control panel (cont.) Routing cables to the control panel Danger 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 Cable entry from the left ¨...
  • Page 65 Installation sequence Electrical connections in the control panel (cont.) Cable entry from the right ¨ A One cable entry each for LV and E Cable bracket (cables secured with 230 V~/400 V~ cables cable ties) B Mains terminals F Connecting cables with plugs: LV C Power cable 400 V~ with cable fit- (<...
  • Page 66 Installation sequence Electrical connections in the control panel (cont.) External heat pump ¨ A Sealing mat (for cable entry from E Cable bracket (cables secured with below) cable ties) B Mains terminals F Connecting cables with plugs: LV (< 42 V) and control cable (230 V~) C Power cable 400 V~ with cable fit- ting from the heat pump control unit...
  • Page 67 Installation sequence Electrical connections in the control panel (cont.) 4. Push the connecting cables (LV 5. Route 400 V~ power cable through cable < 42 V and control cable cable entry and apply strain relief. 230 V~) from the heat pump control Carry out the power connection unit into the corresponding plug-in according to page 99.
  • Page 68 Installation sequence Electrical connections in the control panel (cont.) Attaching the connecting cables from the control unit in the con- trol panel < 42 V 230 V~ X14.6 1. Remove cover A.
  • Page 69 Installation sequence Electrical connections in the control panel (cont.) 2. Route connecting cables B and C 6. Secure the individual wire of connect- through the cable entry in the control ing cable B (control cable 230 V~) panel and insert strain relief on PE terminal X14.6.

  • Page 70: Electrical Connections In The Heat Pump Control Unit

    Installation sequence Electrical connections in the heat pump control unit Fitting the heat pump control unit and inserting cables Wall mounting base and casing base, fitting...
  • Page 71 Installation sequence Electrical connections in the heat pump control… (cont.) Fitting the casing front A Cross connect PCB C Casing front B ON/OFF switch plug-in connection D Controller and sensor PCB...
  • Page 72 Installation sequence Electrical connections in the heat pump control… (cont.) Heat pump control unit, open...
  • Page 73 Installation sequence Electrical connections in the heat pump control… (cont.) Cables, inserting and applying strain relief A Cables with moulded strain relief B On-site cables/leads...
  • Page 74 Installation sequence Electrical connections in the heat pump control… (cont.) Attaching the connecting cables from the control panel in the control unit A Cross connect PCB D Connecting cable (control cable B Controller and sensor PCB 230 V~) C Connecting cable (LV cable <...
  • Page 75 Installation sequence Electrical connections in the heat pump control… (cont.) The red wires connect the following terminals A X6.6 — 211.2 C X6.2 — 211.3 B X6.4 — 211.4 D X6.1 — 224.4 Subject to system equipment level, one or more of the 4 red wires will need to be removed in accordance with the follow- ing details.
  • Page 76 Installation sequence Electrical connections in the heat pump control… (cont.) Type AWHO 351.A Red wires to be removed (see illustra- tion on page 75) A X6.6 — 211.2 B X6.2 — 211.3 C X6.1 — 224.4 D X6.4 — 211.4 Electrical connections of the compo- nents: The following components are connec-...
  • Page 77 Installation sequence Electrical connections in the heat pump control… (cont.) Type AWHI 351.A Red wires to be removed (see illustra- tion on page 75) D X6.4 — 211.4 Electrical connections of the compo- nents: The following components are connec- ted in the heat pump control unit (see from page 80): ■...
  • Page 78 Installation sequence Electrical connections in the heat pump control… (cont.) Electrical connection of the on-site secondary pump GN/YE...
  • Page 79 Installation sequence Electrical connections in the heat pump control… (cont.) Plug in coding card Only plug in the coding card supplied with the heat pump. A Coding card B Controller and sensor PCB...
  • Page 80 Installation sequence Electrical connections in the heat pump control… (cont.) Overview of electrical connections Note ■ Route 230 V~ cables and LV cables separately and bundle them tightly together at the terminals. This ensures that, in case of failure, for example when detaching a wire, the wires can- not drift into the adjacent voltage area.
  • Page 81 Installation sequence Electrical connections in the heat pump control… (cont.) sYA sYS A Cross connect PCB B Main PCB F1 Fuse 6.3A (slow) F3 Fuse 6.3A (slow) X6 Red wire for matching the heat C Extension PCB pump control unit to the specific D Controller and sensor PCB system (see page 74)
  • Page 82 Installation sequence Electrical connections in the heat pump control… (cont.) Main PCB Information regarding the connection Set the required parameters during com- values missioning; see from page 116. ■ The output given is the recommended connected load. ■ The total output of all components con- nected directly to the heat pump con- trol unit (e.g.
  • Page 83 Installation sequence Electrical connections in the heat pump control… (cont.) Operating components 230 V~ Plug sYA Terminals Function Explanation 211.1 Connection values: ■ Output: 200 W ■ Voltage: 230 V~ ■ Max. switching current: 4(2) A Connected at the factory. 211.2 Secondary pump ■...
  • Page 84 Installation sequence Electrical connections in the heat pump control… (cont.) Plug sYS Terminals Function Explanation 212.2 Heating circuit pump for ■ If a heating water buffer cylinder is heating circuit without mixer installed, this pump will be installed in addition to the secondary pump. ■...
  • Page 85 Installation sequence Electrical connections in the heat pump control… (cont.) Connecting a temperature limiter as maximum temperature limiter for under- floor heating system General connection Connection with temperature limiter (part no. 7151 728, 7151 729) X2.N X2.N sÖ A Connection on the main PCB (211.2 or 212.2 in accordance with the A Connection on the main PCB (211.2 table above)
  • Page 86 Installation sequence Electrical connections in the heat pump control… (cont.) Connection with temperature limiter (part no. 7151 728, 7151 729) to exten- sion kit for heating circuit with mixer sÖ sÖ A Plug sÖ for extension kit B Temperature limiter C Heating circuit pump...
  • Page 87 Installation sequence Electrical connections in the heat pump control… (cont.) Extension PCB Information regarding the connection Set the required parameters during com- values missioning; see from page 116. ■ The output given is the recommended connected load. ■ The total output of all components con- nected directly to the heat pump con- trol unit (e.g.
  • Page 88 Installation sequence Electrical connections in the heat pump control… (cont.) Plug sXS Terminals Function Explanation 222.3 Switching external heat Zero volt contact 222.4 source with two high limit safety cut-outs (max. 70 °C) Note to protect the heat pump and ■...
  • Page 89 Installation sequence Electrical connections in the heat pump control… (cont.) High limit safety cut-out for heat C Connection on the external heat pump in conjunction with an external source at terminals for external heat source demand D High limit safety cut-out (max. 70 °C) as heat pump protection X3.1 K1 Relay;...
  • Page 90 Installation sequence Electrical connections in the heat pump control… (cont.) Central fault message 223.1 230 V~, 0.5 A 223.2 A Terminals on extension PCB Plug sXF Terminals Function Explanation 224.4 Control of instantaneous Connection values: heating water heater, ■ Output: 10 W stage 2 ■...
  • Page 91 Installation sequence Electrical connections in the heat pump control… (cont.) Immersion heater EHE 224.7 X2.N A Immersion heater EHE, 6 kW B Terminals on the extension and (power supply cross connect PCB 3/N/PE 400 V/50 Hz)
  • Page 92 Installation sequence Electrical connections in the heat pump control… (cont.) Plug sXG Terminals Function Explanation 225.1 Heating circuit pump of the Connect temperature limiter as maxi- heating circuit with mixer mum temperature limiter for underfloor heating circuit (if installed) in series. Connection values: ■...
  • Page 93 Installation sequence Electrical connections in the heat pump control… (cont.) Terminals Function Explanation ■ Power supply terminals Terminals for message and safety connec- of the control unit "L1" tions and auxiliary compo- nents Note ■ Switched phase L1: Switched phase can be used for on-site X3.1, X3.2, X3.3, X3.7, system components.
  • Page 94 Installation sequence Electrical connections in the heat pump control… (cont.) Terminals Function Explanation Note ■ No parameters need to be set. ■ The compressor is shut down "hard" as soon as the contact opens. ■ The supply voltage to the relevant com- ponents (subject to power supply utility) is switched off by the power-OFF contact signal.
  • Page 95 Installation sequence Electrical connections in the heat pump control… (cont.) Terminals Function Explanation X3.12 Signal "External demand" Requires zero volt N/O contact: X3.13 (external starting of com- ■ Closed: Demand or at exter- pressor and pumps, mixer ■ Open: No demand nal exten- in control operation or ■...
  • Page 96 Installation sequence Electrical connections in the heat pump control… (cont.) Plug Sensors/terminals Type (PTC) Outside temperature sensor, connect on site Ni500 Buffer temperature sensor, top; connect on site Pt500 (X5.6/X5.7) Cylinder temperature sensor, top; connect on site Pt500 (X6.1/X6.2) Cylinder temperature sensor, bottom; connect on site Pt500 (X6.1/X6.3) Flow temperature sensor, secondary circuit...
  • Page 97 Installation sequence Electrical connections in the heat pump control… (cont.) Swimming pool water heating ■ At plug gÖ connect only the circulation Note ■ Swimming pool water heating is pump for swimming pool water heating switched via external extension H1 F in accordance with the following with KM BUS.
  • Page 98 Installation sequence Electrical connections in the heat pump control… (cont.) Cascade control via KM BUS Make connections at external extension H1 only in accordance with the following diagram. X3.10 X3.11 230V 223.1 fÖ 223.2 230V 223.1 223.2 230V sÖ 223.1 223.2 A Heat pump 1 (lead appliance) B KM BUS...

  • Page 99: Power Supply

    Installation sequence Electrical connections in the heat pump control… (cont.) C External extension H1 H Zero volt contact "External demand D Zero volt contact "External demand " K Lag heat pump 3 " E Lag heat pump 1 L Central fault message input, lag Connection at contact for "External heat pump demand "...
  • Page 100 Installation sequence Power supply (cont.) Danger ■ The heat pump control unit/elec- The absence of component tronics supply must be connected earthing in the system can lead to without blocking by the power supply serious injury from electrical cur- utility; tariffs that are subject to possi- rent if an electrical fault occurs.
  • Page 101 Installation sequence Power supply (cont.) Heat pump control unit power supply (230 V~) Note max.16 A This supply must never be blocked. X3.18 1/N/PE X2.1 230 V / 50 Hz ■ Max. fuse rating 16 A X1.1 ■ Standard tariff (no optional low tariff with power-OFF) A Mains terminals inside the heat ■...
  • Page 102 Installation sequence Power supply (cont.) Compressor power supply (400 V~), seal economy tariff termi- nals for the compressor 1. Remove contact shield C. 2. Route 400 V~ power cable through cable entry B and apply strain relief.
  • Page 103 Installation sequence Power supply (cont.) 3. Connect wires to power supply termi- nals A in the control panel. 3/N/PE 4. Fit contact shield C. 400 V / 50 Hz 5. If a seal is required (e.g. when using economy tariff with power-OFF), guide the sealing wire through holes D in both vertical studs.
  • Page 104 Installation sequence Power supply (cont.) X3.7 X3.6 ≈ Diagram excluding fuses and RCD. A Heat pump control unit (terminals on D High tariff meter the cross connect PCB) E Ripple control receiver (contact B Instantaneous heating water heater open: power-OFF enabled) (accessory) F Backup fuse ripple control receiver C Compressor (fan is directly coupled...
  • Page 105 Installation sequence Power supply (cont.) Power-OFF with on-site load discon- Note nection Observe the technical connection condi- tions of the relevant power supply util- The power-OFF signal is connected to ity. the on-site contactor of the economy tar- iff power supply and in the heat pump control unit.

  • Page 106: Phase Monitor

    Installation sequence Power supply (cont.) G Ripple control receiver (contact H Economy tariff meter open: power-OFF enabled) with K TNC system feed backup fuse Phase monitor The phase monitor is used to monitor the The phase monitor switches off (switch- mains power supply to the compressor.
  • Page 107 Installation sequence Power supply (cont.) Version 1 A Over/undervoltage in % B Phase asymmetry in % <>U <>U C Switching delay in s D Contact used in safety chain (N/O) E ON/OFF indicator ("Rel") F Fault display phase failure/phase sequence ("Ph") G Fault display asymmetry ("Asy") H Fault display over/undervoltage ("<>U")
  • Page 108 Installation sequence Power supply (cont.) Version 2 N 11 21 LEDs explained A Voltage "U": Illuminates green if voltage is L1 L2 L3 applied. B Relay "R": Illuminates yellow if the phase sequence is correct. Does not illuminate if the phase sequence is incorrect.

  • Page 109: Closing The Heat Pump

    Installation sequence Closing the heat pump Closing the control panel A Holes for type 120 C Holes for type 110 B Holes for type 114...
  • Page 110 Installation sequence Closing the heat pump (cont.) Fitting the front panel...

  • Page 111: Commissioning, Inspection, Maintenance

    Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance For further information regarding the individual steps, see the page indicated Commissioning steps Inspection steps Maintenance steps Page • • • 1. Opening the heat pump............ 112 • 2. Writing reports..............113 •...

  • Page 112: Further Details Regarding The Individual Steps

    Commissioning, inspection, maintenance Further details regarding the individual steps Opening the heat pump Danger 1. Remove the front panels in reverse Contact with 'live' components order; see page 110. can lead to severe injury from electric current. 2. If required, the control panel can be Never touch the connections pivoted to the side (see page 113).

  • Page 113: Writing Reports

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Pivoting control panel to the side Writing reports Enter measurements taken during com- missioning (described in the following) into the reports from page 143 onwards.

  • Page 114: Checking The Refrigerant Circuit For Leaks

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the refrigerant circuit for leaks 1. Check the floor area, valves and all 2. Check the heat pump interior with a visible solder joints for traces of oil. refrigerant leak detector or leak detecting spray for refrigerant leaks.

  • Page 115: Checking The Expansion Vessel And The Heating Circuit Pressure

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 1. Open any on-site non-return valves 6. Close BDF valve. installed. 7. At manual air vent valve B, connect 2. Check the pre-charge pressure of the the on-site hose and open the manual expansion vessel (see page 115).

  • Page 116: Checking The Compressor Casing Temperature

    The compressor must not develop a layer of ice on its outside, and the casing must not get hotter than 60 °C (if necessary, check with Viessmann technical service). Commissioning the system Commissioning (configuration, setting Note parameters and function checks) can be...
  • Page 117 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Always observe the instructions Switch on the ON/OFF switch on the in the separate service instruc- heat pump control unit. tions of the Vitotronic 200 heat ■ The prompt "Start commission- pump control unit, otherwise the ing?"...
  • Page 118 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Language Date Date / time Time Start commissioning? Programming Parameter group Parameter level 1 select Sensor values Temperature sensors display Signal inputs Signal inputs display Actuator test Actuator test carry out Subscriber check Subscriber check LON carry out...
  • Page 119 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Commissioning without the commissioning assistant Activating the service menu Service menu: 1. Press OK + å simultaneously for The service menu can be enabled from approx. 4 s. any menu. 2.
  • Page 120 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Pumps and further components Pump/component Parameter Setting Secondary pump (for heating "System definition" Ó "1" to "11" circuit A1 without heating "System scheme 7000" water buffer cylinder, no addi- tional heating circuit pump required) Heating circuit pump A1 (in "System definition"...
  • Page 121 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Pump/component Parameter Setting Circulation pump for DHW "External heat source" Ó "1" reheating "Enable external heat source 7B00" "External heat source" Ó "1" "Enable external heat source for DHW heating 7B0D"...
  • Page 122 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) External functions External functions Parameter Setting External demand Poss. "Internal hydraulics" Set flow temperature for external demand Ó "Flow temperature for external demand 730C" External starting of the com- "System definition" Ó "0"...
  • Page 123 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Instantaneous heating water heater Parameters for Setting Instantaneous heating water heater "Electr booster heater" Ó "1" "Enable instantaneous heating water heater 7900" Poss. "Electr booster heater" Ó "1" "Enable instant. heating water heater for cen- tral heating 7902"...
  • Page 124 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Swimming pool water heating Parameters for swimming pool water heating Setting "System definition" Ó "1" "External extension 7010" "System definition" Ó "1" "Swimming pool 7008" Cascade via external extension H1 Parameter Setting Lead appliance...

  • Page 125: Control Unit

    Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Parameter Setting Lead appliance Lag heat pump "System definition" Ó "0" to "255" – "Output lag heat pump 700B" "System definition" Ó "0" to "31" "0" to "31" "Use of heat pump in a cas- cade 700C"...

  • Page 126: Troubleshooting

    Troubleshooting Repairs Overview of sensors, drain valve and air vent valve A Collector K Schrader valve, high pressure side B Drain valve L Safety high pressure switch C Secondary circuit, return tempera- M Electronic expansion valve (EEV) ture sensor N Manual air vent valve D Thermal expansion valve O 4-way diverter valve E Temperature sensor EVI...
  • Page 127 Troubleshooting Repairs (cont.) Draining the heat pump on the secondary side 1. Close on-site BDF valve. 2. Drain heat pump at secondary flow drain valve. Checking sensors ■ For sensor connections to the control- ler and sensor PCB, see page 80. ■...
  • Page 128 Troubleshooting Repairs (cont.) Temperature sensors type Pt500 Capturing element "Pt500" ■ Flow temperature sensor, system (F13) ■ Buffer temperature sensor, top (F4) ■ Cylinder temperature sensor top/bot- tom (F6/F7) ■ Temperature sensor, external heat source (F20) ■ Flow/return temperature sensor, sec- ondary circuit (F8/F9) ■...

  • Page 129: Parts Lists

    Parts lists Parts list type AWHI 351.A Information for ordering spare parts. 037 Connector D28 Quote the part and serial no. (see type 038 Front panel cover insulation plate) and the position no. of the required 039 Rear side panel insulation part (as per this parts list).
  • Page 130 160 Type AWHI 351.A20: 208 Top l.h. side panel Cable harness, low pressure 209 Bottom l.h. side panel 161 Type AWHI 351.A20: 210 Viessmann logo Connecting cable, compressor 211 Vitocal 350 logo 162 Temperature sensor PT500 air dis- 212 Top back panel brace...
  • Page 131 Parts lists Parts list type AWHI 351.A (cont.)
  • Page 132 Parts lists Parts list type AWHI 351.A (cont.)
  • Page 133 Parts lists Parts list type AWHI 351.A (cont.)
  • Page 134 Parts lists Parts list type AWHI 351.A (cont.)
  • Page 135 Parts lists Parts list type AWHI 351.A (cont.)

  • Page 136: Parts List Type Awho 351.A

    Parts lists Parts list type AWHO 351.A Information for ordering spare parts. 037 Connector D28 Quote the part and serial no. (see type 038 Front panel cover insulation plate) and the position no. of the required 039 Rear side panel insulation part (as per this parts list).
  • Page 137 206 Top panel necting cable 207 Back panel, bottom 155 Type AWHO 351.A20: 209 Bottom l.h. side panel Electronic expansion valve con- 210 Viessmann logo necting cable 211 Vitocal 350 logo 157 Type AWHO 351.A10, 212 Top back panel brace AWHO 351.A14:...
  • Page 138 Parts lists Parts list type AWHO 351.A (cont.)
  • Page 139 Parts lists Parts list type AWHO 351.A (cont.)
  • Page 140 Parts lists Parts list type AWHO 351.A (cont.)
  • Page 141 Parts lists Parts list type AWHO 351.A (cont.)
  • Page 142 Parts lists Parts list type AWHO 351.A (cont.)

  • Page 143: Commissioning/Service Reports

    Commissioning/service reports Hydraulic parameters report Setting and test values Set value Commission- Testing the external heating circuit pumps Circulation pump type Circulation pump stage Overflow valve setting Primary circuit commissioning Air inlet temperature °C Temperature, air discharge °C Temperature differential ΔT: Flow temperature, secondary circuit = 35 °C 4 to 8 at air inlet temperature ≤...
  • Page 144 Commissioning/service reports Control parameter report (cont.) Parameter Code Delivered condi- Commis- tion sioning System definition System scheme (see page 26) 7000 Temperature differential for calculating 7003 40 (≙ 4 K) the heating limit Swimming pool 7008 External extension 7010 Cascade control 700A Number of lag heat pumps in cascade 5735...
  • Page 145 Commissioning/service reports Control parameter report (cont.) Parameter Code Delivered condi- Commis- tion sioning External heat source Enable external heat source 7B00 Priority external heat source/instant. 7B01 heating water heater Dual mode temperature external heat 7B02 100 (≙ 10 °C) source Enable external heat source for DHW 7B0D heating...
  • Page 146 Commissioning/service reports Control parameter report (cont.) Parameter Code Delivered condi- Commis- tion sioning Electr booster heater Enable instantaneous heating water 7900 heater Enable instant. heating water heater for 7902 central heating Max. output instantaneous heating water 7907 heater Output for instant. heating water heater at 790A power-OFF Dual-mode temp instant.
  • Page 147 Commissioning/service reports Control parameter report (cont.) Parameter Code Delivered condi- Commis- tion sioning Heating circuit 2 Standard room temperature 3000 200 (≙ 20 °C) Reduced room temperature 3001 200 (≙ 20 °C) Remote control 3003 Heating curve slope 3006 6 (≙ 0.6) Heating curve level 3007 0 (≙...
  • Page 148 Commissioning/service reports Control parameter report (cont.) Parameter Code Delivered condi- Commis- tion sioning Operation Lock out controls 8800...

  • Page 149: Specification

    Specification Specification Vitocal 350-A Type AWHI 351.A AWHO 351.A Output details at 100 % to EN 14511 (A2/W35 °C, spread 5 K) Rated heating out- 10.6 14.5 18.5 10.6 14.5 18.5 Power consumption kW Coefficient of per- formance ε (COP)
  • Page 150 Specification Specification (cont.) Vitocal 350-A Type AWHI 351.A AWHO 351.A Heating water Contents Min. flow rate (at 1250 1520 1250 1520 10 K spread) Pressure drop, con- mbar denser (incl. con- nected pipework) Max. flow tempera- ture (at 5 K spread) ■...
  • Page 151 Specification Specification (cont.) Vitocal 350-A Type AWHI 351.A AWHO 351.A Refrigerant circuit Refrigerant R 407 R 407 R 407 R 407 R 407 R 407 C Fill volume Compressor Type Hermetically sealed scroll compressor with injection Permiss. operat- ing pressure...
  • Page 152 Specification Specification (cont.) Vitocal 350-A Type AWHI 351.A AWHO 351.A Connections/Ter- minals Heating flow and 1½ 1½ 1½ 1¼ 1¼ 1¼ return Condensate drain 25/32 25/32 25/32 25/32 25/32 25/32 7 int./ext. Weight Sound power level Weighted total sound power level at A 7 °C (±3 K)/W...

  • Page 153: Appendix

    Heating circuits fully installed and filled Electrical installation completed Hydraulic lines fully thermally insulated All windows and external doors sealed Preferred appointment: Date Time Date Time All work ordered from Viessmann will be charged to me/us in accordance with the current Viessmann pricelist. Place/date Signature...

  • Page 154: Declaration Of Conformity

    Certificates Declaration of conformity We, Viessmann Werke GmbH&Co KG, D-35107 Allendorf, declare as sole respon- sible body that the product Vitocal 350-A, type AWHI 351.A, AWHO 351.A incl. heat pump control unit conforms with the following standards: DIN 8901 DIN EN 61 000-3-3; 2009-06 DIN EN 62 233;...

  • Page 155: Keyword Index

    Keyword index Keyword index Activating, service menu....119 Declaration of conformity....154 Air duct..........10 DHW heating 1........40 Angle when tilted........7 DHW heating 2........42 Appliance connector......10 Dimensions Appliance fuse.........128 ■ AWHI 351.A........8 ■ AWHO 351.A........15 Draining........14, 127 Cables Drain valve and air vent valve ■...
  • Page 156 Keyword index Keyword index (cont.) Parameters Heating circuit connection....57 ■ Cascade via H1......124 Heat pump control unit ■ Cascade via LON......124 ■ Fitting..........70 ■ DHW heating......41, 43 ■ Open..........72 ■ External functions......122 Hydraulic connection set....19, 23 ■ External heat source.....123 Hydraulic lines......22, 24 ■...
  • Page 157 Keyword index Keyword index (cont.) Sensor resistance curves....127 Underfloor heating circuit....85 Sensors Underfloor heating system....85 ■ Checking........127 Use of heat pump in a cas- ■ Overview........126 cade.........124, 125 Service menu ■ Activating........119 ■ Calling up........119 Vitocom..........121 ■ Disabling........119 Swimming pool........97 System diagram Wall clearances ■...
  • Page 160 Applicability Herstell-Nr.: 7439961 7439963 7439965 7439966 7439967 7439968 Viessmann Werke GmbH&Co KG Viessmann Limited D-35107 Allendorf Hortonwood 30, Telford Telephone: +49 6452 70-0 Shropshire, TF1 7YP, GB Fax: +49 6452 70-2780 Telephone: +44 1952 675000 www.viessmann.com Fax: +44 1952 675040...

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