Viessmann VITOCAL 300-A Installation And Service Instructions Manual
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Viessmann VITOCAL 300-A Installation And Service Instructions Manual

Type awc-i-m, aw-o-m compact heat pump with electric drive, 230 v~
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VIESMANN
Installation and service
instructions
for contractors
Vitocal 300-A
Type AWC-I-M, AW-O-M
Compact heat pump with electric drive, 230 V~
For applicability, see the last page
VITOCAL 300-A
Please keep safe.
5366 060 GB
6/2008

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Summary of Contents for Viessmann VITOCAL 300-A

  • Page 1 VIESMANN Installation and service instructions for contractors Vitocal 300-A Type AWC-I-M, AW-O-M Compact heat pump with electric drive, 230 V~ For applicability, see the last page VITOCAL 300-A Please keep safe. 5366 060 GB 6/2008...

  • Page 2: Safety Instructions

    The system must be commissioned promise the safe operation of by the system installer or a qualified your heating system. person authorised by the installer. Replace faulty components only with original Viessmann Regulations spare parts. Observe the following when working on this system &...
  • Page 3 Instal- ling non-authorised compo- nents and non-approved modifications or conversions can compromise safety and may invalidate our warranty. For replacements, use only ori- ginal spare parts supplied or approved by Viessmann.

  • Page 4: Table Of Contents

    Index Index Installation instructions Preparing for installation Product information ..................General information regarding electrical connection ........Internal heat pump, type AWC-I-M............... External heat pump type AW-O-M ............... 20 Overview of possible system diagrams............34 Function description for the system versions ..........34 System version 1 ..................
  • Page 5 Index Index (cont.) Number of external heat pumps ..............134 Output lag heat pump.................. 134 External extension ..................135 External operating mode changeover heating circuits ........135 External operating mode changeover effect ..........136 External operating mode changeover duration ..........137 External demand/mixer OPEN ..............
  • Page 6 Index Index (cont.) Control settings, hydraulics Heat pump for drying buildings ..............154 Screed program ..................154 Set flow temperature for external demand ........... 156 Control settings, heating water buffer cylinder Heating water buffer cylinder............... 157 Switching times, heating water buffer cylinder ..........157 Set temperature for fixed value (switching times).........
  • Page 7 Index Index (cont.) Appendix Vitocal 300-A commissioning order ............. 206 Certificates Declaration of conformity ................207 Keyword index ..................208...

  • Page 8: Product Information

    Preparing for installation Product information Vitocal 300-A, type AWC-I-M Air-water heat pump with integral circulation pump (secondary pump), three- way diverter valve, safety assembly and diaphragm expansion vessel. Vitocal 300-A, type AW-O-M Air-water heat pump without integral circulation pump (secondary pump) and without three-way diverter valve.

  • Page 9: Internal Heat Pump, Type Awc-I-M

    Preparing for installation Internal heat pump, type AWC-I-M Please note Please note Avoid damaging the appliance If the compressor is at a steep during handling. angle in the heat pump, lubri- Never load the top, front or cant will enter the refrigerant side panels of the appliance.
  • Page 10 Preparing for installation Internal heat pump, type AWC-I-M (cont.) Minimum clearances Outlet side on the left (delivered con- Outlet side on the right dition) A Power supply A Power supply B Hydraulic connection and conden- B Hydraulic connection and conden- sate drain sate drain...
  • Page 11 Preparing for installation Internal heat pump, type AWC-I-M (cont.) Installation Installation position overview (outlet side on the left) EPP connection, inlet side (air Weather grille inlet) EPP wall outlet/duct part EPP connection, outlet side (air EPP 90° bend outlet) EPP Expanded polypropylene...
  • Page 12 Preparing for installation Internal heat pump, type AWC-I-M (cont.) Shell dimensions, wall outlets (outlet side on the left) EPP wall outlet For dimension x see the follow- Top edge – finished floor ing diagram EPP Expanded polypropylene...
  • Page 13 Preparing for installation Internal heat pump, type AWC-I-M (cont.) Outlet side on the left, inlet side on EPP wall outlet Top edge – finished floor the right EPP Expanded polypropylene Wall outlet In unfinished buildings, the relevant Example: thickness of render and plasterboard End coating/thickness of must be taken into account for render = 15 mm...
  • Page 14 Preparing for installation Internal heat pump, type AWC-I-M (cont.) Dimensions for installation against the wall (outlet side on the left) EPP wall outlet/duct part EPP connection, outlet side (air Weather grille outlet) EPP connection, inlet side (air EPP 90° bend inlet) EPP Expanded polypropylene Heat pump...
  • Page 15 Preparing for installation Internal heat pump, type AWC-I-M (cont.) Dimensions for installation in a corner (outlet side on the left) External rendering Compression sealing strip and Wall acrylic airtight seam (all-round) EPP duct part (can be trimmed PU foam (all-round) to the required size from the out- Plaster finish/wall coating side.
  • Page 16 Preparing for installation Internal heat pump, type AWC-I-M (cont.) Connections C Condensate drain Diagram without front panels D Heating water flow (see page 62) A Cable entries E DHW cylinder return/heating B DHW cylinder flow (see page 62) water return (see page 62)
  • Page 17 Preparing for installation Internal heat pump, type AWC-I-M (cont.) Note Hydraulic lines B, D, E and con- densate drain C can be routed out of the heat pump to the left or right. The electrical cables can only be rou- ted into the heat pump from the right.
  • Page 18 Preparing for installation Internal heat pump, type AWC-I-M (cont.) D Two electrical connecting cables, F Instantaneous heating water hea- wired ready to plug in (5, 15 or ter power supply 30 m): (230 V/50 Hz; 1/N/PE; max. out- Control cable 230 V~, required put 9 kW) cable length inside the heat pump: Required cable length inside the...
  • Page 19 Preparing for installation Internal heat pump, type AWC-I-M (cont.) L Low pressure sensor Diagram with instantaneous heating M Suction gas temperature sensor water heater (accessory) P High pressure sensor B Secondary return temperature R Hot gas temperature sensor V Secondary flow temperature sen- sensor D LPG temperature sensor E Safety high pressure switch...

  • Page 20: External Heat Pump Type Aw-O-M

    Preparing for installation External heat pump type AW-O-M Please note Please note Avoid damaging the appliance If the compressor is at a steep during handling. angle in the heat pump, lubri- Never load the top, front or cant will enter the refrigerant side panels of the appliance.

  • Page 21: Minimum Clearances

    Preparing for installation External heat pump type AW-O-M (cont.) Minimum clearances Foundations The heat pump must be placed hori- The foundations, supporting surface zontally on a permanently solid sur- and cable ducts must be designed to face. We recommend laying concrete prevent rodents from entering the foundations as shown in the following heat pump and the cable ducts.
  • Page 22 Preparing for installation External heat pump type AW-O-M (cont.) B Recess in the foundations to route Foundations the heating water flow and return, A Concrete foundations in accor- condensate drain, electrical con- dance with local requirements and necting cables (LV and control the standard rules of building cables) and power supply cable to engineering (observe spot loads...

  • Page 23: Condensate Drain

    Preparing for installation External heat pump type AW-O-M (cont.) Condensate drain Drain all condensate derived from the air (subject to temperature and rela- tive humidity up to 20 l/h) via a DN 70 drain pipe, which should be protected from frost and provide a steady fall. If possible connect the condensate drain to a drainage or sewer system.
  • Page 24 Preparing for installation External heat pump type AW-O-M (cont.) Connecting cables A Condensate drain (on site) G Moisture-proof and waterproof B Foundations for the heat pump wall ducts (on site) C Electrical connecting cable (con- H Pipe liner with wall seal flange for trol cable) 230 V~, control unit/ hydraulic connection line (acces- heat pump (accessories)
  • Page 25 Preparing for installation External heat pump type AW-O-M (cont.) C Electrical connecting cable (con- N Instantaneous heating water hea- trol cable) 230 V~, control unit/ ter (accessory) O Control module, instantaneous heat pump (accessories) Required cable length inside the heating water heater P Power supply, instantaneous heat pump: min.
  • Page 26 Preparing for installation External heat pump type AW-O-M (cont.) Heating water connection E Use the hydraulic connection The frost protection of the control unit set (accessory), pre-assembled in dif- is enabled provided the control unit ferent lengths. The connection set and the heating circuit pump are comprises one flexible flow and one ready for operation.
  • Page 27 Preparing for installation External heat pump type AW-O-M (cont.) KG conduit K should be routed & & Observe the permissible bending radius of KG conduit K; never kink with a slope towards the heat pump and may need a condensate drain. the KG conduit.
  • Page 28 Preparing for installation External heat pump type AW-O-M (cont.) Connections Diagram without front panels, plan view with silencer hoods...
  • Page 29 Preparing for installation External heat pump type AW-O-M (cont.) C DHW cylinder return/heating A Condensate drain water return (for installation see B DHW cylinder flow/heating water page 63) D Silencer hoods (for installation flow (for installation see page 63) see page 102) Note Cable entries are cut into the sealing mat in the floor panel on site (see...
  • Page 30 Preparing for installation External heat pump type AW-O-M (cont.) Electrical cables (for installation see from page 64) A Heat pump control unit C Power cables for further compo- Wall outlet for cables centrally nents and functions: & Pumps/pump control below the control unit. Required cable length inside the &...
  • Page 31 Preparing for installation External heat pump type AW-O-M (cont.) D Two electrical connecting cables, G Control module, instantaneous ready wired (5, 15 or 30 m): heating water heater (230 V/ Control cable 230 V~, required 50 Hz; 1/N/PE, control panel with cable length inside the heat pump: 1 contactor, install inside the 1.65 m...
  • Page 32 Preparing for installation External heat pump type AW-O-M (cont.) Internal components A Heating water return B Secondary return temperature sensor C Condenser D LPG temperature sensor E Safety high pressure switch F Electronic expansion valve (EEV) G Evaporator H Air outlet temperature sensor K Air inlet temperature sensor L Low pressure sensor M Suction gas temperature sensor...
  • Page 33 Preparing for installation External heat pump type AW-O-M (cont.) B Secondary return temperature M Suction gas temperature sensor P High pressure sensor sensor D LPG temperature sensor R Hot gas temperature sensor E Safety high pressure switch V Secondary flow temperature sen- I Schrader valve, high pressure 1 Quick-acting air vent valve side...

  • Page 34: Overview Of Possible System Diagrams

    Preparing for installation Overview of possible system diagrams The following table provides an overview of all possible system diagrams. Diagrams 2, 6 and 10 (from page 37) represent examples of 3 typical versions of heat pump systems. System diagram (ID 7000) Heating circuit –...

  • Page 35: Heating Circuit

    Preparing for installation Function description for the system versions (cont.) Heating circuit Minimum volume flow Heat pumps require a minimum heat- ing water volume flow (see specifica- tion on page 204). Maintain the values shown in the technical guide at all times.

  • Page 36: Dhw Heating

    Preparing for installation Function description for the system versions (cont.) Heating water buffer cylinder operated in parallel Use of the heating water buffer cylin- Because of the increased water der: volume of the heat source and the fact & Bridging power-OFF periods: that it may have a separate shut-off At peak times, heat pumps may be facility, an additional (or larger)

  • Page 37: System Version 1

    System version 1 & The hydraulic diagram shows a Select system diagram 2 (see Vitocal 300-A, type AW-O-M. page 34 and 132): & For type AWC-I-M, the secondary & 1 heating circuit without mixer (A1) pump and three-way diverter valve &...
  • Page 38 Preparing for installation System version 1 (cont.) Equipment required Pos. Description Heat pump Instantaneous heating water heater (accessory, with control module) Heat pump control unit (with electrical connecting cable to the heat pump) Circulation pump for cylinder heating (accessory; for type AWC-I-M in- tegral three-way diverter valve "Heating/DHW") Secondary pump (accessory;...
  • Page 39 Preparing for installation System version 1 (cont.) Pos. Description DHW heating with DHW cylinder DHW cylinder Cylinder temperature sensor DHW circulation pump ("Wtimer DHW Circ.") DHW heating with cylinder primary system Cylinder Cylinder temperature sensor DHW circulation pump ("Wtimer DHW Circ.") Motorised two-way valve Flow rate limiter Plate-type heat exchanger...
  • Page 40 Preparing for installation System version 1 (cont.) PCB (see page 71) A Control module for instantaneous heating water heater...
  • Page 41 Preparing for installation System version 1 (cont.) Required parameter (code to be entered by "Contractor": 5243) Parameter (ID) Setting "System definition" & "System diagram" (7000) "2" & DHW circulation pump Setting switching times ("Wtimer DHW Circ.") (701B) "Electric heating" & "Inst.htg.water heat"...

  • Page 42: System Version 2

    Preparing for installation System version 2 & The hydraulic diagram shows a Select system diagram 6 (see Vitocal 300-A, type AW-O-M. page 34 and 132) & For type AWC-I-M, the secondary & 1 heating circuit without mixer (A1) pump and three-way diverter valve &...
  • Page 43 Preparing for installation System version 2 (cont.) Equipment required Pos. Description Heat pump Instantaneous heating water heater (accessory, with control module) Heat pump control unit (with electrical connecting cable to the heat pump) Circulation pump for cylinder heating (accessory; for type AWC-I-M in- tegral three-way diverter valve "Heating/DHW") Secondary pump (accessory;...
  • Page 44 Preparing for installation System version 2 (cont.) Pos. Description Flow temperature sensor Temperature limiter for limiting the maximum temperature of underfloor heating systems Heating circuit pump Mixer motor...
  • Page 45 Preparing for installation System version 2 (cont.) PCB (see page 71) A Control module for instantaneous heating water heater...
  • Page 46 Preparing for installation System version 2 (cont.)

  • Page 47: System Version 3

    "Remote control" (3003) "Yes" System version 3 & The hydraulic diagram shows a Select system diagram 10 (see Vitocal 300-A, type AW-O-M. page 34 and 132) & For type AWC-I-M, the secondary & 1 heating circuit without mixer (A1) pump and three-way diverter valve &...
  • Page 48 Preparing for installation System version 3 (cont.)
  • Page 49 Preparing for installation System version 3 (cont.) Equipment required Pos. Description Heat source Heat pump Instantaneous heating water heater (accessory, with control module) Heat pump control unit (with electrical connecting cable to the heat pump) Circulation pump for cylinder heating (accessory; for type AWC-I-M in- tegral three-way diverter valve "Heating/DHW") Secondary pump (accessory;...
  • Page 50 Preparing for installation System version 3 (cont.) Pos. Description Overflow valve Heating circuit pump Heating circuit with mixer (M2) Underfloor heating circuit with directly controlled mixer motor Vitotrol 200 remote control Overflow valve Flow temperature sensor Temperature limiter for limiting the maximum temperature of underfloor heating systems Heating circuit pump Mixer motor...
  • Page 51 Preparing for installation System version 3 (cont.) A On-site contactor relay B Use jumper from 1X3.1 to 2X7.1...
  • Page 52 Preparing for installation System version 3 (cont.) A Control module for instantaneous heating water heater...
  • Page 53 Preparing for installation System version 3 (cont.)
  • Page 54 Preparing for installation System version 3 (cont.) Required parameter (code to be entered by "Contractor": 5243) Parameter (ID) Setting "System definition" & "System diagram" (7000) "10" & DHW circulation pump Setting switching times ("Wtimer DHW Circ.") (701B) & "Ext. extension" (7010) "Yes"...

  • Page 55: Dhw Heating 1

    Preparing for installation System version 3 (cont.) Parameter (ID) Setting "Ext. heat source" & "Ext. heat source" (7B00) "Yes" & "Ext. HS for DHW" (7B0D) "Yes" "Electric heating" & "Inst.htg.water heat" (7900) "Yes" "Heating circ. A1" & "Remote control" (2003) "Yes"...
  • Page 56 Preparing for installation DHW heating 1 (cont.) Pos. Description Cylinder temperature sensor, top Cylinder temperature sensor, bottom (optional) Circulation pump for cylinder heating (for type AW-O-M accessory; for type AWC-I-M integral three-way diverter valve "Heating/DHW") PCB (see page 71) Required parameter (code to be entered by "Contractor": 5243) Parameter (ID) Setting "System definition"...

  • Page 57: Dhw Heating 2

    Preparing for installation DHW heating 2 Cylinder with cylinder primary system A Heat pump interface KW Cold water KW DHW Equipment required Pos. Description Cylinder DHW circulation pump (optional) Cylinder temperature sensor, top Motorised two-way valve, normally closed Flow rate limiter Plate-type heat exchanger Circulation pump for cylinder heating (for type AW-O-M accessory;...
  • Page 58 Preparing for installation DHW heating 2 (cont.) PCB (see page 71) Required parameter (code to be entered by "Contractor": 5243) Parameter (ID) Setting "System definition" & "System diagram" (7000) "0", "2", "4," "6", "8", "10" & DHW circulation pump Setting switching times ("Wtimer DHW Circ.") (701B) "DHW"...

  • Page 59: Installation Sequence Installing The Heat Pump

    Installation sequence Installing the heat pump Position and level the heat pump, type AWC-I-M/AW-O-M as described on page 9/ 20.

  • Page 60: Primary Side Connections

    Installation sequence Primary side connections Type AWC-I-M Note 1. Centre the wall outlets in the wall Make the ventilation and extract air cut-outs and plaster them in cor- apertures burglar-proof. rectly. Prerequisites for outlet side on the 2. Finish off the external end of the right: ventilation and extract air ducts &...

  • Page 61: Secondary Side Connections (Heating Circuits)

    Installation sequence Secondary side connections (heating circuits) Note & In underfloor heating circuits, a tem- perature limiter must be integrated on site for limiting the maximum temperature of underfloor heating. & An overflow valve must be inte- grated in every heating circuit (excl. single pipe heating circuits) to safe- guard the minimum volume flow (see specification on page 204).
  • Page 62 Installation sequence Secondary side connections (heating circuits) (cont.) Type AWC-I-M C Condensate drain Diagram with instantaneous heating D Heating water flow water heater (accessory) E DHW cylinder return/heating B DHW cylinder flow water return Push hydraulic lines A, B, D onto connections and secure with two plug-in connector retainers each.
  • Page 63 Installation sequence Secondary side connections (heating circuits) (cont.) Type AW-O-M A Condensate drain C DHW cylinder return/heating B DHW cylinder flow/heating water water return D Sealing mat flow 1. Cut suitable entries in sealing mat 3. Join the hydraulic lines to the pipes D for the hydraulic lines.

  • Page 64: 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 2. Note control panel cover. Release internal earth conductor B before removing the cover.
  • Page 65 Installation sequence Electrical connections in the control panel (cont.) Note In the delivered condition, the coding card is affixed inside the control panel. Remove the coding card and insert into the control unit; see page 80. Overview of electrical connections in the control panel A Transformer F Only type AWC-I-M: B Fan control (230 V~)
  • Page 66 Installation sequence Electrical connections in the control panel (cont.) H Full wave soft starter M Plug-in connector, full wave soft K Capacitor starter L Capacitor N Compressor contactor Routing electrical cables to the control panel Danger Damaged cable insulation can cause injury and damage to the appliance.
  • Page 67 Installation sequence Electrical connections in the control panel (cont.) Type AWC-I-M A One cable entry each for LV and D Power cable 230 V~ with cable fit- 230 V~ cables ting B Cable bracket (cables secured E Mains terminals F Power supply cable, instanta- with cable ties) C Electrical connecting cables: neous heating water heater...
  • Page 68 Installation sequence Electrical connections in the control panel (cont.) Type AW-O-M A Sealing mat (for cable entry from C Electrical connecting cables: below) LV cable (< 42 V) and control B Cable bracket (cables secured cable (230 V~) with plug fitting D Power cable 230 V~ with cable fit- with cable ties) ting...
  • Page 69 Installation sequence Electrical connections in the control panel (cont.) 1. Type AWC-I-M: 5. Secure the 230 V~ power supply Route the 230 V~ cables through cable with a loop to the cable one cable entry, and the LV cable bracket, route through the cable fit- through the other cable entry in the ting and apply strain relief.

  • Page 70: Electrical Connections In The Control Unit

    Installation sequence Electrical connections in the control unit Note Make all external electrical connec- & The total output of all components tions as per the instructions from connected directly to the control unit page 82 onwards. (e.g. pumps, valves, message facil- ities, contactors) must not exceed 1000 W.
  • Page 71 Installation sequence Electrical connections in the control unit (cont.) Overview of the PCBs Installed positions of the PCBs A PCB 1 (cross connect PCB) with B PCB 2 (main PCB) C PCB 3 (sensor PCB) control unit fuse The terminal markings on the PCBs (e.g.
  • Page 72 Installation sequence Electrical connections in the control unit (cont.) 3X1.2: Terminal 2 of terminal strip X1 on PCB 3 1X1.?: Any earth terminal of term- inal strip X1 on PCB 1 1X2.N: Any neutral conductor term- inal of terminal strip X2 on PCB 1 PCB 1 (cross connect PCB) X1 Terminal for earth conductor incl.
  • Page 73 Installation sequence Electrical connections in the control unit (cont.) PCB 2 (main PCB) A Coding card slot External 230 V~ connections External 230 V~ connections & Circulation pump for cylinder & DHW circulation pump reheating ("Wtimer DHW Circ.") & Cylinder primary pump / two- &...
  • Page 74 Installation sequence Electrical connections in the control unit (cont.) PCB 3 (sensor PCB) X1 Sensor connections and KM BUS: X2 Common earth connection (GND) & Outside temperature X5 Terminal for electrical connecting & Heating water buffer cylinder cable (LV) temperature &...
  • Page 75 Installation sequence Electrical connections in the control unit (cont.) Installing the mounting bracket and control unit back...
  • Page 76 Installation sequence Electrical connections in the control unit (cont.) Fitting the control unit front...
  • Page 77 Installation sequence Electrical connections in the control unit (cont.) A PCB 1 (cross connect PCB) D Back view of ON/OFF switch B Blue cores E PCB 2 (motherboard) C Black cores F Back view of programming unit Opening the control unit...
  • Page 78 Installation sequence Electrical connections in the control unit (cont.) Inserting cables and applying strain relief A Cables with moulded strain relief B On-site cables...
  • Page 79 Installation sequence Electrical connections in the control unit (cont.) Control unit matching for type AW-O-M If two components are connected to the same terminal, press both cores together into a single wire ferrule. We therefore recommend removing the four red cores F in the control unit for external components (e.g.
  • Page 80 Installation sequence Electrical connections in the control unit (cont.) E Terminal strip 1X6 F 4 red cores 1. Release and remove the 4 red 2. Connect external components (e.g. cores F at the following terminals. circulation pumps). 2X7.10 – 1X6.4 2X8.7 –...
  • Page 81 Installation sequence Electrical connections in the control unit (cont.) A Coding card B PCB 2 (motherboard)
  • Page 82 Installation sequence Electrical connections in the control unit (cont.) Connect the electrical connecting cables from the control panel A PCB 1 (cross connect PCB) C Electrical connecting cable (LV B PCB 3 (sensor PCB) cable < 42 V), control unit/heat pump D Electrical connecting cable (con- trol cable 230 V~), control unit/...
  • Page 83 Installation sequence Electrical connections in the control unit (cont.) Pumps Equipment Connection Required parameters: Parameter (ID) Ó Setting Circulation pump for cylinder 2X7.10 "System definition" "System diagram" (7000) Ó & heating (only for type AW-O) 1X1.? (max. 130 W) 1X2.N with DHW heating (see page 56)
  • Page 84 Installation sequence Electrical connections in the control unit (cont.) Equipment Connection Required parameters: Parameter (ID) Ó Setting DHW circulation pump 2X7.11 "System definition" & (max. 50 W) 1X1.? "Wtimer DHW Circ." (701B) Ó Setting switching times 1X2.N (see page 56) Circulation pump for cylinder 2X8.13 "Ext.
  • Page 85 Installation sequence Electrical connections in the control unit (cont.) Heating circuit Connection to PCB 2 Heating circuit A1 without heating 2X8.7 water buffer cylinder Heating circuit A1 with heating water 2X7.9 buffer cylinder Heating circuit M2 2X8.11 Connection with temperature lim- iter (part no.
  • Page 86 1X1.? system; both components to (see page 58) 2X8.12) Instantaneous heating water heater (accessory) Connection Installation instructions Installation instructions Control module for instanta- Instantaneous heating water neous heating water heater heater for the Vitocal 300-A (accessory). (accessory).
  • Page 87 Installation sequence Electrical connections in the control unit (cont.) Required parameters: Parameter (ID) Ó Setting "Electric heating" "Inst.htg.water heat" (7900) Ó "Yes" & Power-OFF The supply voltage to the relevant components (subject to power supply utility) is switched off by the power-OFF contact signal. Contact closed: Power-OFF dis- abled...
  • Page 88 Installation sequence Electrical connections in the control unit (cont.) External heat source Please note Protect the heat pump against temperatures over 70 °C from the external heat source. Install a high limit safety cut- out (STB) or take further mea- sures if required.
  • Page 89 Installation sequence Electrical connections in the control unit (cont.) D High limit safety cut-out STB (set to 70 °C) as heat pump protection K1 Relay; sizing in accordance with the external heat source; observe safety instructions Equipment Connection Required parameters: Parameter (ID) Ó...
  • Page 90 Installation sequence Electrical connections in the control unit (cont.) External demand, external mixer "OPEN", operating mode changeover A Terminals on PCB 1 B Zero volt N/O contact outside the control unit (on site) Breaking capacity 230 V~; 0.1 A Required parameter (code to be entered by "Contractor": 5243) Parameter (ID) Ó...
  • Page 91 Installation sequence Electrical connections in the control unit (cont.) Required parameter (code to be entered by "Contractor": 5243) Parameter (ID) Ó Setting Function External blocking "System definition" "Ext. blocking effect" (701A) Ó & "0" to "31" (see page 140) External mixer "CLOSE" "System definition"...
  • Page 92 Installation sequence Electrical connections in the control unit (cont.) Swimming pool water heating Note & Connect only the circulation pump for swimming pool water heating E according to the following diagram. Never connect a filter circuit pump. & Control of swimming pool water heating via "Ext.
  • Page 93 Installation sequence Electrical connections in the control unit (cont.) Cascade control Make connections to "Ext. extension H1" only according to the following diagram. A Heat pump 1 (lead appliance) B KM BUS...
  • Page 94 Installation sequence Electrical connections in the control unit (cont.) C External extension H1 H Zero volt contact "Ext. demand" D Zero volt contact "Ext. demand" K Heat pump 4 (lag appliance) E Heat pump 2 (lag appliance) L Input for central fault message Connection at the contact for "Ext.

  • Page 95: Power Supply

    Installation sequence Power supply Danger Danger Incorrectly executed electrical The absence of component installations can lead to injury earthing can transfer danger- through the transmission of ous body currents, should an dangerous body currents and electrical fault occur. result in equipment damage. The appliance and the pipe- Carry out the power supply work must be connected to the...
  • Page 96 Installation sequence Power supply (cont.) Information regarding the control unit power supply & Protect the power supply to the con- trol unit with a fuse of max. 16 A. & For accessories and external com- ponents which are not to be con- nected to the control unit, we recommend making the power con- nection to the same fuse, but with at...
  • Page 97 Installation sequence Power supply (cont.) Control unit power supply Note This supply must never be blocked. & Max. fuse rating 16 A & Standard tariff (no optional low tariff with power-OFF) A Mains terminals inside the control & Recommended cable: 3 x 1.5 mm unit Power supply, compressor (main power circuit) and fan &...
  • Page 98 Installation sequence Power supply (cont.) Power supply with power-OFF Power-OFF without on-site load disconnecting switch The power-OFF signal is connected Note directly in the control unit. The com- Observe the technical connection pressor is switched off during power- conditions of the relevant power sup- OFF (contact D open).
  • Page 99 Installation sequence Power supply (cont.) D Ripple control receiver (contact F High tariff meter G TNC system feed open: power-OFF enabled) E Backup fuse ripple control recei- H Low tariff meter Power-OFF with on-site load disconnecting switch The power-OFF signal is connected to Note the on-site contactor of the low-tariff Observe the technical connection...

  • Page 100: Closing The Heat Pump

    Installation sequence Power supply (cont.) D Control unit power supply G Ripple control receiver (contact E Heating system main isolator open: power-OFF enabled) F High tariff meter H Low tariff meter K TNC system feed Closing the heat pump Closing the control panel 2.
  • Page 101 Installation sequence Closing the heat pump (cont.) Fitting the front panels...
  • Page 102 Installation sequence Closing the heat pump (cont.) Fitting the silencer hoods (only type AW-O-M)
  • Page 103 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 ............•...

  • Page 104: Further Details Regarding The Individual Steps

    Commissioning, inspection, maintenance Further details regarding the individual steps Opening the heat pump Danger Please note Touching 'live' components can Wait at least 30 min between result in the transfer of danger- the installation and the com- ous body currents. missioning of the appliance to Never touch the connections prevent equipment damage.
  • Page 105 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Pivoting control panel to the side Maintaining service reports Enter measurements taken during commissioning described in the fol- lowing in the reports from page 199 onwards.
  • Page 106 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the refrigeration 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 detection spray for refrigerant Note leaks.
  • Page 107 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) A Quick-acting air vent valve B Manual air vent valve C Fill & drain valve Type AW-O-M Manual air vent valve B and fill & drain valve C installed on site inside the building.
  • Page 108 10 min. compressor casing exterior while it is in operation. Ice must not form on the outside of the compressor, and the casing must not become hotter than 60 °C (if necessary, consult the Technical Service department at Viessmann).
  • Page 109 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Setting the control parameters 1. Activate the "Contractor level". 3. Acknowledge all messages (see For information regarding the page 117). "Contractor level" and regarding control parameters, see chapter Note "Control settings" from page 131. Messages are displayed by the manual control of some compo- 2.
  • Page 110 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Function Explanation Access rights To log on as "Contractor" by entering code "5243" (see page 131) Note The contractor level remains active until key "Standard display" F is pressed or if no input is given for 30 min.
  • Page 111 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Calling up the commissioning assistant A ON/OFF switch D Programming unit B Fault indicator (red) E Key 6 C ON indicator (green) F "Standard display" key Please note 1. Start the system at ON/OFF switch Incorrect operation at the con- tractor level can result in Progress bar "Check System"...
  • Page 112 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 2. Press key 6 E whilst the progress bar is filling from left to right. The commissioning assistant starts. Note You can cancel the commissioning assistant at any time using key "Standard display"...
  • Page 113 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 13. "BACK" for "Relay" (outputs). 18. "BACK" for "Mixer" 14. y/x for the required func- 19. y/x for the required mixer tion or connected (e.g. "Heating circ. components (e.g. 2", "Ext. heat "Compressor", source", etc.).
  • Page 114 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) "Commissioning" menu System characteristics Programming To set all required parameters according to the system config- uration, see page 132 and operating instruc- tions. Heating circuit 1 Venting Start secondary pump and heating circuit pump 1.
  • Page 115 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Note Configuration and setting parameters can also be carried out without the commissioning assistant (see page 132, separate menu tree and operating instructions). Instructing the system user The system installer must hand the operating instructions to the system user and instruct him/her in the operation of the system.

  • Page 116: Scanning Messages

    Troubleshooting Control unit diagnostics Scanning messages A Fault display B Message C Message symbol Messages are displayed in and by the message symbol flashing («, ¸, !). For faults (U), the fault display also flashes. Type of message Fault Warning &...
  • Page 117 Troubleshooting Control unit diagnostics (cont.) Note & Message on the display, e.g. "¸C5 power-OFF" Message symbol "¸" flashes & The display of information is subject to access rights (enter access code for contractors). & The appliance retains its functional- ity, however the information needs to be noted.
  • Page 118 Troubleshooting Control unit diagnostics (cont.) 4. "Message history". 6. "MESSAG" to return to the mes- sage display. 5. "TIME" for the times at which the messages Ó Time information relates to the occurred. time at which the message occurred. Ò Time information relates to the time at which the message was deleted or the fault was remedied.
  • Page 119 Troubleshooting Control unit diagnostics (cont.) Message Cause Measures U20 Flow sens. second- Short circuit, secondary Check the sensor and re- flow temperature sensor place if required (see page 164 and 173) U21 Sec. return sensor Short circuit, secondary Check the sensor and re- return temperature sen- place if required (see page 164 and 173)
  • Page 120 Troubleshooting Control unit diagnostics (cont.) Message Cause Measures U50 DHW sensor top Short circuit, top cylin- Check the sensor and re- der temperature sensor place if required (see page 164 and 173) U52 DHW sensor bottom Short circuit, bottom cy- Check the sensor and re- linder temperature sen- place if required (see...
  • Page 121 Troubleshooting Control unit diagnostics (cont.) Message Cause Measures U78 Room sensor HC1 Break, room tempera- Check the sensor and re- ture sensor heating place if required (see circuit A1 page 164 and 173) U79 Room sensor HC2 Break, room tempera- Check the sensor and re- ture sensor heating place if required (see...
  • Page 122 Troubleshooting Control unit diagnostics (cont.) Message Cause Measures UAB Electric heater Instantaneous heating Danger water heater (acces- Touching 'live' sory) faulty or high limit components can safety cut-out (STB) has result in the trans- responded fer of dangerous body currents. Ensure the appli- ance is at zero volts before carry-...
  • Page 123 Troubleshooting Control unit diagnostics (cont.) Message Cause Measures UB0 Device recognition & Error in recognising ap- Check sensor input F11. pliance version, incor- Never connect any rect coding card or PCB external components faulty. (see page 166). & Check coding card and replace if required &...
  • Page 124 Troubleshooting Control unit diagnostics (cont.) Message Cause Measures UBE HC3 R/C KM BUS Communication error Check remote control con- KM BUS remote control; nections and coding (see heating circuit with mixer page 53); switch ON re- mote control ¸C5 Power-OFF Power-OFF (triggered No measures required by the power supply uti-...
  • Page 125 Troubleshooting Control unit diagnostics (cont.) Message Cause Measures & !D3 Low pressure Circulation volume in the Check the radial fan and primary circuit too low, shut-off facilities & heat pump faulty or Have heat pump tested pressure sensor faulty by a refrigeration engi- neer Note Pressure switch resets...
  • Page 126 Troubleshooting Control unit diagnostics (cont.) Message Characteristics of the control unit and effects on the system U40 ... Mixer heating circuit M2 is closed. U48 ... U41 ... Mixer heating circuit M3 is closed. U49 ... U50 ... The control unit is operated with the temperature value of the U58 ...
  • Page 127 Troubleshooting Control unit diagnostics (cont.) 6. "ÓH" for hours run by the heat pump in a particular load situation. See table "Hours run according to load classes" Displays Display Description I (—) The last 4 digits designate the version of the hardware and soft- ware of the heat pump module (example: 0000 0000 0000).
  • Page 128 Troubleshooting Control unit diagnostics (cont.) Display Description Condensation pressure heat pump 1 and 2 Err/Msg Faults and messages. For explanations see the following table. Faults and messages (Err/Msg) Heat pump 1 (compressor stage 1) Heat pump 2 (compressor stage 2) Fault Messages Fault...

  • Page 129: Measures In Case The Room Temperature Is Constantly Too Low

    Troubleshooting Control unit diagnostics (cont.) Energy statement The amount of electrical energy that has been used to operate the heat pump and the amount of heating energy that has been transferred into the heating system are displayed in menu item "Energy statem". These values are shown for the last 12 months.

  • Page 130: No Programming Unit Display

    Troubleshooting No programming unit display 1. Switch ON system ON/OFF switch. 4. Check the plug-in and threaded connections. 2. Check the fuse; replace it if required (see page 164). 5. Replace programming unit if required. 3. Check whether there is power at the control unit and control panel;...

  • Page 131: Control Settings By The Contractor

    Control settings Menu structure overview – main menu Separate document; menu tree Control settings by the contractor Only those settings are described on A code must be entered to access the the following pages that are the contractor level. exclusive domain of specialists oper- ating at the contractor level.

  • Page 132: System Diagram

    System definition control settings System diagram Adjust the system diagram during 3. "System definition". commissioning according to the sys- 4. y/x for "System diagram" tem version. For a list of possible system dia- (7000). grams, see page 34. 5. l/m for the selected value. By selecting the system diagram, all components associated with the dia- gram are automatically enabled and...

  • Page 133: Swimming Pool

    System definition control settings Temperature differential heating (cont.) Press the following keys: 1. "Device settings". 2. "Programming". 3. "System definition". 4. y/x for "Temp. diff. heat- ing" (7003). A Set room temperature B Outside temperature 5. 5/% for the selected value. C Selected value "Temp.

  • Page 134: Cascade Control

    System definition control settings Cascade control 5. l/m for the selected value: The lead appliance of a cascade as well as each of the max. three lag "0" for every lag appli- appliances must be set. Cascade con- ance (delivered trol via "Ext.

  • Page 135: External Extension

    System definition control settings Output lag heat pump (cont.) 5. l/m for the required value Press the following keys: (average value, in the 1. "Device settings". example 12 kW). 2. "Programming". 6. "BACK" to confirm. 3. "System definition". Delivered condition 10 kW 4.

  • Page 136: External Operating Mode Changeover Effect

    System definition control settings External operating mode changeover heating . . . (cont.) 4. y/x for "Op. mode change Note The parameter "Ext. blocking" takes HC" (7011). higher priority than "Ext. demand". 5. l/m for the selected value. Press the following keys: 6.

  • Page 137: External Operating Mode Changeover Duration

    System definition control settings External operating mode changeover effect (cont.) 5. l/m for the selected value: 2. "Programming". "0" OFF 3. "System definition". "1" Reduced mode "2" Standard mode 4. y/x for "Op. mode change (delivered condi- eff." (7012). tion) "3"...

  • Page 138: External Blocking/Mixer Closed

    System definition control settings External demand/mixer OPEN (cont.) Delivered condition Setting range 0 to 7 Note & Parameter "Ext. blocking" takes priority over "Ext. demand" (see page 138). & See also "Set flow temperature for external demand" on page 156. Value Function of the system components Heating circuits with mixer M2/M3 –...
  • Page 139 System definition control settings External blocking/mixer CLOSED (cont.) Press the following keys: 6. "BACK" to confirm. 1. "Device settings". Delivered condition: 2. "Programming". Setting range: 0 to 8 3. "System definition". Note & The parameter "Ext. blocking" takes 4. y/x for "Ext.blocking/ higher priority than "Ext.

  • Page 140: External Blocking Effect

    System definition control settings External blocking effect 4. y/x for "Ext. blocking Detailing at what setting of parameter "Ext. blocking" which system compo- effect" (701A). nent will be blocked. 5. l/m for the selected value. Any combination of individual compo- nents is possible.

  • Page 141: Vitosolic Type

    System definition control settings External blocking effect (cont.) Value Secondary Circula- Heating Heating Heating cir- pump/ tion pump circuit circuit cuit pump compres- for cylin- pump pump A1 blocked der heat- blocked blocked blocked blocked Vitosolic type 4. y/x for "Vitosolic type" Determining whether solar control unit Vitosolic 100 or 200 is installed in the (7016).

  • Page 142: Additional Output With Switching Times (E.g. Dhw Circulation Pump)

    System definition control settings Vitocom 100 (cont.) 3. "System definition". 5. "YES" to enable. 4. y/x for "Vitocom 100" 6. "BACK" to confirm. (7017). Additional output with switching times (e.g. DHW circulation pump) "Wtimer DHW Circ." (701B) Operating instructions...

  • Page 143: Heat Pump Output

    Compressor control settings Compressor enable The compressor can be permanently 3. "Compressor". blocked (e.g. operation with only 4. y/x for "Enable" (5000). instantaneous heating water heater, accessory). Never block the compressor during 5. "NO" to block the compres- standard mode. Press the following keys: 6.
  • Page 144 Compressor control settings Temperature for defrost stop (cont.) 4. y/x for "Defrost stop t" 6. "BACK" to confirm. (5010). 5. %/5 for the required tem- Delivered condition 10 °C perature Setting range 0 to 70 °C...

  • Page 145: Priority Of External Heat Sources

    Control settings, external heat source External heat source If an external heat source is inte- 2. "Programming". grated in the heating system. 3. "Ext. heat source". Note 4. y/x for "Ext. heat source" All the following parameters become visible only when the parameter has (7B00).

  • Page 146: External Heat Source For Dhw

    Control settings, external heat source Dual-mode temperature (cont.) Delivered condition: 10 °C 5. 1/! for the selected value. Setting range: -50 to 50 °C 6. "BACK" to confirm. External heat source for DHW If an external heat source is to be 2.

  • Page 147: Dhw Switching Times

    DHW control settings Cylinder temperature DHW "Set DHW temp." (6000) Operating instructions DHW switching times "Switching times DHW" (6001) Operating instructions Minimum temperature Parameter "Min. temp." prevents the 2. "Programming". temperature inside the DHW cylinder from falling too low (frost protection). 3.

  • Page 148: Hysteresis/Hysteresis Booster Heater

    DHW control settings Max. temperature (cont.) Danger 3. "DHW". Risk of scalding with DHW at 4. y/x for "Max. temp." temperatures over 60 ºC. To limit the temperature to (6006). 60 °C, install a mixing device, 5. T/U for the selected value. e.g.
  • Page 149 DHW control settings Hysteresis/Hysteresis booster heater (cont.) Note The value selected for "Hysteresis" should be higher than the expected temperature drop due to heat losses during reduced mode (approx. 5 K). A lower value for "Hyst. booster hea- ter" increases the proportion of DHW heating by the external heat source.

  • Page 150: Start Optimisation Dhw

    DHW control settings Start optimisation DHW "Start optimisation" (6009) Operating instructions Stop optimisation DHW "Stop optimisation" (600A) Operating instructions DHW auxiliary function "Pasteurisation" (600B) Operating instructions Set DHW temperature 2 "Set temp. 2" (600C) Operating instructions Temp. sensor 2 If a second cylinder temperature sen- Press the following keys: sor is installed at the bottom of the DHW cylinder, the entire DHW volume...

  • Page 151: Booster Heater

    DHW control settings Booster heater The DHW can be reheated either by 2. "Programming". an electric booster heater (e.g. on-site immersion heater) in the DHW cylin- 3. "DHW". der, or by an external heat source 4. y/x for "Booster heater" (control or enabling the pump for the external heat source).

  • Page 152: Control Settings, Electric Heater Instantaneous Heating Water Heater (Accessory)

    Control settings, electric heater Instantaneous heating water heater (accessory) If an electric booster heater (instanta- Press the following keys: neous heating water heater, acces- sory) is installed in the heating water 1. "Device settings". flow. 2. "Programming". Please note If this parameter is used to 3.

  • Page 153: Stage At Power-Off

    Control settings, electric heater Stage at power-OFF 4. y/x for "Stage at power- Setting of the output stage for the instantaneous heating water heater OFF" (790A). (accessory) that will be enabled even 5. l/m for the selected value: during power-OFF periods. "0"...

  • Page 154: Screed Program

    Control settings, hydraulics Heat pump for drying buildings For drying buildings, the heat pump 2. "Programming". can be used in addition to the instan- taneous heating water heater (acces- 3. "Internal hydraulics". sory). 4. y/x for "HP for dry. build- If the heat pump is not ready for use, this function must be set to "NO"...
  • Page 155 Control settings, hydraulics Screed program (cont.) 3. "Internal hydraulics". 6. "BACK" to confirm. 4. y/x for "Screed program" Delivered condition (7303). Setting range 0 to 12 5. l/m for the required tem- perature/time profile. Temperature/time profile Temperature/time profile 1 (in acc. Temperature/time profile 3 (to with EN 1264-4) ÖNORM)

  • Page 156: Set Flow Temperature For External Demand

    Control settings, hydraulics Screed program (cont.) Temperature/time profile 5 Temperature/time profile 6 A Flow temperature A Flow temperature B Days B Days Temperature/time profile 7 to 12 Within the temperature/time profiles 7 Temperature/time Duration of to 12, the system regulates to the pro- profile max.

  • Page 157: Switching Times, Heating Water Buffer Cylinder

    Control settings, heating water buffer cylinder Heating water buffer cylinder This function is only available for 2. "Programming". system diagram 1 and 2, and in the delivered condition is set to "NO". 3. "Buffer cylinder". The heating water buffer cylinder is 4.

  • Page 158: Hysteresis

    Control settings, heating water buffer cylinder Hysteresis The set value defines at what devia- Press the following keys: tion from the selected set temperature the heating of the heating water buffer 1. "Device settings". cylinder starts or stops. 2. "Programming". Note This function is only available for sys- 3.
  • Page 159 Control settings, heating water buffer cylinder Max. temperature (cont.) Delivered condition 60 °C 5. 1/! for the selected value Setting range 1 to 70 °C 6. "BACK" to confirm...

  • Page 160: Control Settings, Heating Circuits Room Temperatures And Switching Times

    Control settings, heating circuits Room temperatures and switching times Setting for all heating circuits A1 Operating instructions (2000), M2 (3000) and M3 (4000) Activating the remote control A Vitotrol 200 remote control unit can 2. "Programming" be installed for each heating circuit. 3.

  • Page 161: Room Temperature Hook-Up (Heating Circuits)

    Control settings, heating circuits Influence of room temperature hook-up (cont.) 4. y/x for "Room t hook-up Press the following keys: slope". 1. "Device settings". 5. l/m required value. 2. "Programming". 6. "BACK" to confirm. 3. "Heating circ. 1" (200A) "Heating circ. 2" (300A) Delivered condition Setting range 0 to 50...

  • Page 162: Maximum Flow Temperature

    Control settings, heating circuits Maximum flow temperature Limiting the max. set flow temperature 3. "Heating circ. 1" (200E) of the heating circuit to a maximum value. "Heating circ. 2" (300E) Note "Heating circ. 3" (400E) Install a temperature limiter on site 4.

  • Page 163: Automatic Summer/Winter Time Changeover

    Date/time control settings Date and time Date and time are factory-set and may Operating instructions be changed manually. Automatic summer/winter time changeover 7. y/x for "Summertime - In the delivered condition, the chan- geover will always take place in the month"...

  • Page 164: Components Temperature Sensor Resistance Curves

    Components Temperature sensor resistance curves For sensor connections to PCB 3 see Temperature sensors type Pt 500 page 173. For the position of the sensors in the heat pump, see figure on page 19. Temperature sensors type Ni 500 Capturing element "Pt 500" &...
  • Page 165 Components Appliance fuse protection (cont.) Danger Touching 'live' components can result in the transfer of danger- ous body currents. Before working on the equip- ment, always ensure that the power circuit is also at zero volt. Removing the fuse from the programming unit does not switch the power circuit to zero volt.

  • Page 166: Connection And Wiring Diagrams Overview Of The Pcbs And Connection Options

    Connection and wiring diagrams Overview of the PCBs and connection options General information Only the connections to be made are & Strip the insulation as close to the shown in the following connection dia- terminals as possible. grams. Pre-allocated connections &...
  • Page 167 Connection and wiring diagrams Overview of the PCBs and connection options (cont.) Message and safety components on PCB 1 (cross connect PCB) The following terminals carry a & 1X3.3 switched L1: & 1X3.7 & 1X3.1 & 1X3.11 & 1X3.2 & 1X3.13...
  • Page 168 Connection and wiring diagrams Overview of the PCBs and connection options (cont.) Message and safety connections at PCB 1 (cross connect PCB) Pos. Function Explanation Terminals q¢Q ON/OFF switch 1X2.2 1X2.3 1X3.16 1X3.17 q¢W External blocking, mixer Zero volt contact: 1X3.2 &...
  • Page 169 Connection and wiring diagrams Overview of the PCBs and connection options (cont.) Function components 230 V~ on PCB 2 (main PCB)
  • Page 170 Connection and wiring diagrams Overview of the PCBs and connection options (cont.) PCB 2, terminal X7 Pos. Function Explanation Terminals External heat source Zero volt N/O contact: 2X7.1 & control/demand Closed: Requirement 2X7.2 & Open: No requirement & Breaking capacity 250 V~, 4 (2) A &...
  • Page 171 Connection and wiring diagrams Overview of the PCBs and connection options (cont.) Pos. Function Explanation Terminals Central fault message Zero volt contact: 2X7.12 & Closed: Fault 2X7.13 & Open: No fault & Contact breaking capacity 250 V~, 4(2) A & Not suitable for safety LV On-site connection PCB 2, terminal X8...
  • Page 172 Connection and wiring diagrams Overview of the PCBs and connection options (cont.) Pos. Function Explanation Terminals w¢U & Heating circuit pump of Max. output: 100 W 2X8.11 the heating circuit with On-site connection mixer M2 w¢I Cylinder primary pump, Switch cylinder primary pump 2X8.12 two-way shut-off valve and two-way shut-off valve in...
  • Page 173 Connection and wiring diagrams Overview of the PCBs and connection options (cont.) Sensors and KM BUS on PCB 3 (sensor PCB) Pos. Sensor / KM BUS Type Terminals e¢Q — KM BUS KM BUS 3X1.25 3X2.25...

  • Page 174: Safety Chain, Control Circuit, Main Power Circuit

    Connection and wiring diagrams Overview of the PCBs and connection options (cont.) Pos. Sensor / KM BUS Type Terminals e¢W Buffer cylinder temperature sen- Pt 500 3X1.22 3X2.22 e¢E Outside temperature sensor Ni 500 3X1.16 3X2.16 e¢R Cylinder temperature sensor, Pt 500 3X1.14 3X2.14...
  • Page 175 Connection and wiring diagrams Safety chain, control circuit, main power circuit (cont.) 3X1.2: Terminal 2 of terminal strip X1 on PCB 3 1X1.?: Any earth terminal of term- inal strip X1 on PCB 1 1X2.N: Any neutral conductor term- inal of terminal strip X2 on PCB 1...
  • Page 176 Connection and wiring diagrams Safety chain, control circuit, main power circuit (cont.) Safety chain...
  • Page 177 Connection and wiring diagrams Safety chain, control circuit, main power circuit (cont.) A Control unit power supply connec- E Power-OFF (remove jumper when tion connecting) B External demand (message input, F Message input, power-OFF X For control circuit connection, see control unit) C Fault message, lag heat source page 180...
  • Page 178 Connection and wiring diagrams Safety chain, control circuit, main power circuit (cont.)
  • Page 179 Connection and wiring diagrams Safety chain, control circuit, main power circuit (cont.) G Thermal circuit breaker, fan N Compressor relay H Message input O Refrigerant circuit control (con- I Safety high pressure switch troller for electronic expansion J Low pressure message valve EEV) K Control high pressure message P Compressor contactor...
  • Page 180 Connection and wiring diagrams Safety chain, control circuit, main power circuit (cont.) Control circuit...
  • Page 181 Connection and wiring diagrams Safety chain, control circuit, main power circuit (cont.) Switched phase DHW circulation pump ("Wtimer External heat source control DHW Circ.") (zero volt) Central fault message (zero volt) Instantaneous heating water Compressor control heater control (accessory) stage Instantaneous heating water heater control (accessory) stage Mixer |OPEN, external heat...
  • Page 182 Connection and wiring diagrams Safety chain, control circuit, main power circuit (cont.) M N/A O Mixer |OPEN, heating circuit N Secondary pump with mixer M2...
  • Page 183 Connection and wiring diagrams Safety chain, control circuit, main power circuit (cont.) P Mixer ~CLOSE, heating circuit U Fan motor Z For continuation of control circuit, with mixer M2 R Heating circuit pump for heating see previous illustration sG Secondary pump (plug in cable circuit with mixer M2 S Cylinder primary pump / shut-off harness)
  • Page 184 Connection and wiring diagrams Safety chain, control circuit, main power circuit (cont.) Power circuit - compressor A Compressor contactor K1 D Compressor B Motor protection (see also E Capacitor F Capacitor page 179). C Full wave soft starter...
  • Page 185 Parts lists Parts list, type AWC-I-M When ordering spare parts: 038 Hose 041 Gasket A 7 30 x 44 x 2 mm Quote the part and serial no. (see 043 Gasket 7 21 x 30 x 2 mm type plate) and the item no. of the required part (as per this parts list).
  • Page 186 301 Touch-up spray, Vitosilver 208 Top l.h. side panel 302 Installation and service instruc- 209 Bottom l.h. side panel tions 210 Viessmann logo 303 Operating instructions 211 Vitocal 300 logo A Type plate Parts not shown 025 Diaphragm safety valve G ½" x ¾", 3 bar...
  • Page 187 Parts lists Parts list, type AWC-I-M (cont.)
  • Page 188 Parts lists Parts list, type AWC-I-M (cont.)
  • Page 189 Parts lists Parts list, type AWC-I-M (cont.)
  • Page 190 Parts lists Parts list, type AWC-I-M (cont.)
  • Page 191 Parts lists Parts list, type AWC-I-M (cont.)

  • Page 192: Parts List, Type Aw-O-M

    Parts lists Parts list, type AW-O-M When ordering spare parts: 051 Inlet ring Quote the part and serial no. (see 052 Radial fan type plate) and the item no. of the 053 Spiral hose required part (as per this parts list). 100 Programming unit Obtain standard parts from your local 101 Rocker switch...
  • Page 193 159 Temperature sensor 208 Top l.h. side panel 160 Cable entries 209 Bottom l.h. side panel 163 Resistor set 210 Viessmann logo 214 Silencer hood left/right 211 Vitocal 300 logo 215 Diverter valve coil 212 Back cover grille 300 Touch-up paint stick, Vitosilver...
  • Page 194 Parts lists Parts list, type AW-O-M (cont.)
  • Page 195 Parts lists Parts list, type AW-O-M (cont.)
  • Page 196 Parts lists Parts list, type AW-O-M (cont.)
  • Page 197 Parts lists Parts list, type AW-O-M (cont.)
  • Page 198 Parts lists Parts list, type AW-O-M (cont.)

  • Page 199: Control Parameters Report

    Commissioning/service reports Hydraulic parameters report Setting and test values Set value Commis- sioning Testing the external heating circuit pumps Circulation pump type Circulation pump stage Overflow valve setting Primary commissioning Primary air inlet temperature °C Primary air outlet temperature °C Temperature differential ΔT at: "Secondary flow"...
  • Page 200 Commissioning/service reports Control parameters report (cont.) Parameter Setting range Delivered Commission- condition External extension Yes/No External operating 0 to 11 mode changeover, heating circuits External operating 0 to 3 mode changeover, ef- fect External operating 0 to 12 h mode changeover, time duration External demand / 0 to 7...
  • Page 201 Commissioning/service reports Control parameters report (cont.) Parameter Setting range Delivered Commission- condition Min. temperature 5 to 60 °C 10 °C Max. temperature 20 to 80 °C 60 °C Hysteresis 1 to 10 K Hysteresis booster 2 to 30 K 10 K heater Start optimisation, Yes/No...
  • Page 202 Commissioning/service reports Control parameters report (cont.) Parameter Setting range Delivered Commission- condition Electric heating Yes/No Max. stage, electric 1 to 3 booster heater Stage at power-OFF 0 to 3 Hydraulics Heat pump for drying Yes/No buildings Screed program 0 to 12 Set flow temperature, 0 to 70 °C 50 °C...

  • Page 203: Specification

    Specification Specification Note & The output given is the recom- mended connected load. & The total output of all connected appliances must not exceed 1000 W. If the total output ≤ 1000 W, the individual rating of a component can be greater than specified. &...
  • Page 204 Specification Specification (cont.) Components Connec- Connected Voltage [V] Max. break- tion load [W] ing capa- city [A] Total current Max. 5(3) A Vitocal 300 Type AWC-I-M AW-O-M Output data at 100% to EN 14511 (2/35 °C, 5 K spread) Rated output Power consumption 2.54 2.54...
  • Page 205 Specification Specification (cont.) Vitocal 300 Type AWC-I-M AW-O-M Rated current (max.) Starting current (with electronic starting < 34 < 34 current limiter, full wave soft starter. Re- quired for safeguarding the Z character- istics) Start-up current (with stalled armature) Fuse protection 25 Z 25 Z Fan protection...

  • Page 206: Vitocal 300-A Commissioning Order

    Appendix Vitocal 300-A commissioning order Please send the following order, We would ask that a competent together with the enclosed system employee of yours be present during layout, by fax to your local Viessmann the commissioning. sales office.

  • Page 207: Declaration Of Conformity

    A The product characteristics determined as system values for the product Vitocal 300-A (see technical guide) can be utilised to assess the energy con- sumption of heating and ventilation systems to DIN V 4701-10 specified by the EnEV [Germany].

  • Page 208: Keyword Index

    Keyword index Keyword index Appliance fuse protection Declaration of Conformity ......Applicability DHW auxiliary function ....... . .
  • Page 209 Keyword index Keyword index (cont.) Fault display Inspection ........&...
  • Page 210 Keyword index Keyword index (cont.) Operating mode changeover Safety chain ........Operating mode changeover Screed program .
  • Page 211 Keyword index Keyword index (cont.) Wall clearances ......Wall outlet ........Warranty .
  • Page 212 230 V~ Type Serial number AWC-I-M 7262 729 8 01000 ... AW-O-M 7262 7318 01000 ... Viessmann Werke GmbH&Co KG Viessmann Limited D-35107 Allendorf Hortonwood 30, Telford Telephone: +49 6452 70-0 Shropshire, TF1 7YP, GB Fax: +49 6452 70-2780 Telephone: +44 1952 675000 www.viessmann.com...

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