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

Compact heat pump with electric drive
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See also: User Manual , Installation and Service Instructions Manual
VIESMANN
Installation and service
instructions
for contractors
Vitocal 300-A
Type AWC-I, AW-O
Compact heat pump with electric drive
For applicability, see the last page
VITOCAL 300-A
Please keep safe.
5355 955 GB
5/2008

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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, AW-O Compact heat pump with electric drive For applicability, see the last page VITOCAL 300-A Please keep safe. 5355 955 GB 5/2008...

  • Page 2: Safety Instructions

    Replace faulty components only with original Viessmann Regulations spare parts. Observe the following when working on this system all legal instructions regarding the...
  • 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 General information regarding electrical connection ........Internal heat pump, type AWC-I ..............External heat pump type AW-0 ..............13 Connections, type AWC-I ................20 Overview of possible system diagrams............21 Function description for the system versions ..........22 Internal components, type AWC-I ..............
  • Page 5 Index Index (cont.) Temperature differential heating..............132 Swimming pool ................... 133 Cascade control (lead appliance) ..............133 Cascade control (lag appliance) ..............134 Output lag heat pump.................. 134 External extension ..................135 External operating mode changeover heating circuits ........135 External operating mode changeover effect ..........
  • Page 6 Index Index (cont.) Electric heating................... 151 Max. stage electric booster heater .............. 151 Stage for power-OFF .................. 152 Control settings, hydraulics Heat pump for drying buildings ..............153 Screed program ..................153 Set flow temperature, external demand ............155 Control settings, heating water buffer cylinder Buffer cylinder ....................
  • Page 7 Parts list, type AWC-I .................. 181 Parts list, type AW-O................... 188 Commissioning/service reports Hydraulic parameter report ................. 195 Control parameter report................195 Specification ..................... 199 Appendix Order to commission the Vitocal 300-A............202 Certificates Declaration of conformity ................203 Keyword index ..................204...

  • Page 8: General Information Regarding Electrical Connection

    Preparing for installation General information regarding electrical connection The total output of all connected If the compressor and/or the instan- appliances must not exceed taneous heating water heater are 1000 W. If the total output 1000 W, operated at a lower tariff (power- the individual rating of a component OFF), provide an additional cable (e.g.
  • Page 9 Preparing for installation Internal heat pump, type AWC-I (cont.) Clearance dimensions (floor plan) Version 1 Version 2 A Power supply A Power supply B Hydraulic connection and conden- B Hydraulic connection and conden- sate drain sate drain Installation and dimensions Please note Note High floor loading can result in...
  • Page 10 Preparing for installation Internal heat pump, type AWC-I (cont.) Example: Installation against the wall, EPP inlet connection connection to a duct, l.h. discharge EPP outlet connection Weather grille EPP Expanded polypropylene (par- EPP wall outlet / duct part ticle foam) 90°...
  • Page 11 Preparing for installation Internal heat pump, type AWC-I (cont.) Example: Dimensions for installation C EPP inlet connection against the wall, l.h. discharge D Heat pump E EPP outlet connection A EPP wall outlet / duct part F 90° EPP bend B Weather grille...
  • Page 12 Preparing for installation Internal heat pump, type AWC-I (cont.) Example: Corner installation, l.h. dis- C EPP duct part (can be trimmed to charge the correct size from the outside. Observe plaster thickness) A External rendering D Compression sealing strip and B Wall acrylic airtight seam (all-round) E PU foam (all-round)

  • Page 13: External Heat Pump Type Aw-0

    Preparing for installation External heat pump type AW-0 The maximum permissible tilting To prevent air "short circuits" and angle during transportation and higher sound emissions through installation is 45º. reflection, avoid installing the equip- Provide a manual draining facility ment in recesses, on building cor- for the heating flow and return lines ners or between two walls.
  • Page 14 Preparing for installation External heat pump type AW-0 (cont.) Foundations The heat pump must be placed hori- zontally on a permanently solid sur- face. We therefore recommend laying down concrete foundations as shown in the following diagrams. Provide an adequately sized recess B in the foundations to permit the lines (heating flow and return, electrical cables and condensate...
  • Page 15 Preparing for installation External heat pump type AW-0 (cont.) Foundations floor plan incl. silencer B Recess in the foundations to route hoods the heating flow and return lines, condensate drain and electric A Concrete foundations in accor- cables (sensor leads, control dance with local requirements and cables, power supply) the standard rules of building...
  • Page 16 Preparing for installation External heat pump type AW-0 (cont.) Drain all condensate derived from the air (subject to temperature and the relative humidity up to 20 l/h) via a DN 70 drain pipe, which should be pro- tected from frost and provide a steady fall.
  • Page 17 Preparing for installation External heat pump type AW-0 (cont.) Connecting cables A Control cable, control unit/heat H Pipe liner with wall seal flange for pump (accessory) hydraulic connection line (acces- B Sensor lead, control unit/heat sory) pump (accessory) K Moisture-proof and waterproof C Heat pump control unit wall ducts (on site) D Power cable (on site)
  • Page 18 Preparing for installation External heat pump type AW-0 (cont.) Heating water connection Use the hydraulic connection In buildings level with the ground, pro- set (accessory), pre-assembled in dif- vide a suitable insulated duct or ferent lengths. The set comprises one enable draining with compressed air.
  • Page 19 Preparing for installation External heat pump type AW-0 (cont.) Also protect the plugs on the side of Observe the permissible bending the control unit against damage (e.g. radius of KG conduit G; never kink by being stepped on) until they are the conduit.

  • Page 20: Connections, Type Awc-I

    Preparing for installation Connections, type AWC-I A Inlet for electric cables D Heating water flow B DHW cylinder flow E DHW cylinder return / heating C Condensate drain water return...

  • Page 21: Overview Of Possible System Diagrams

    Preparing for installation Connections, type AWC-I (cont.) Connection dimensions B Hydraulic connections A Inlet for electric cables Overview of possible system diagrams The following table provides an overview of all possible system diagrams. Diagrams 2, 6 and 10 (see from page 26) represent examples of 3 typical ver- sions of heat pump systems.

  • Page 22: Heating Circuit

    Preparing for installation Overview of possible system diagrams (cont.) System diagram (number of parameters/ID 7000 programmed in the control unit) 10 11 Heating circuit DHW cylinder Heating water buffer cy- linder External heat 0 0 X source Swimming Options pool Solar External heat source: 0 In diagrams 1 and 2, use only...
  • Page 23 Preparing for installation Function description for the system versions (cont.) At peak times, heat pumps may be Systems with large water volumes, e. switched OFF by your local power g. underfloor heating systems, can supply utility, subject to your electri- operate without a heating water buffer city tariff.

  • Page 24: Dhw Heating

    Preparing for installation Function description for the system versions (cont.) DHW heating In the delivered condition, DHW heat- The control unit switches the auxiliary ing through heat pump takes priority output with switching times (e.g. DHW over the heating circuit. circulation pump) OFF during cylinder heating, so this function is not impaired.

  • Page 25: Internal Components, Type Awc-I

    Preparing for installation Internal components, type AWC-I A Electronic expansion valve (EEV) B Evaporator C Low pressure sensor D Suction gas temperature sensor E Compressor F High pressure sensor G Hot gas temperature sensor H Condenser I LPG temperature sensor J Safety high pressure switch K Instantaneous heating water hea- ter (accessory)

  • Page 26: Internal Components, Type Aw-O

    Preparing for installation Internal components, type AW-O A Electronic expansion valve (EEV) B Evaporator C Low pressure sensor D Suction gas temperature sensor E Compressor F High pressure sensor G Hot gas temperature sensor H Condenser I LPG temperature sensor J Safety high pressure switch L Temperature sensor - air IN M Temperature sensor - air OUT...
  • Page 27 Preparing for installation System version 1 (type AW-O) (cont.) Equipment required Item Description Heat pump Instantaneous heating water heater (accessory) Heat pump control unit with connecting cable inside the building Circulation pump for cylinder heating (for type AWC-I: Integral 3-way di- verter valve "central/DHW heating") Secondary pump (accessory;...
  • Page 28 Preparing for installation System version 1 (type AW-O) (cont.) Item Description Cylinder temperature sensor Switching times, auxiliary output (e.g. DHW circulation pump) 2-way motorised ball valve Flow rate limiter Plate-type heat exchanger Cylinder primary pump DHW heating DHW cylinder Cylinder temperature sensor DHW circulation pump Heating circuit without mixer (A1) Underfloor heating circuit...
  • Page 29 Preparing for installation System version 1 (type AW-O) (cont.) Electrical connection LP PCB (see page 68)
  • Page 30 Preparing for installation System version 1 (type AW-O) (cont.) A Plug aCH connected to the cable harness B Control module for instantaneous heating water heater LP PCB (see page 68) Note Illustration of the required minimum settings. Code to be entered by "Contractor": 5243 For comfort characteristics and further information regarding control unit operation, see operating instructions.

  • Page 31: System Version 2 (Type Aw-O)

    Preparing for installation System version 1 (type AW-O) (cont.) Setting parameters Parameter Setting Parameter group Basic settings System diagram 7000 System definition Wtimer DHW Circ. (e.g. Setting switch- 701B System definition DHW circulation pump) ing times Electric heating Inst.htg.water heater 7900 Electric heating System version 2 (type AW-O) Select system diagram 6 (see...
  • Page 32 Preparing for installation System version 2 (type AW-O) (cont.) Equipment required Item Description Heat pump Instantaneous heating water heater (accessory) Heat pump control unit with connecting cable Circulation pump for cylinder heating (for type AWC-I: Integral 3-way di- verter valve "central/DHW heating") Secondary pump (accessory;...
  • Page 33 Preparing for installation System version 2 (type AW-O) (cont.) Item Description Outside temperature sensor KM BUS distributor Secondary flow temperature sensor (for type AW-O: Integrated and connected in the secondary heating water flow inside the building) DHW heating Vitocell 100-V DHW cylinder, type CVW, 390 litres Cylinder temperature sensor Switching times, auxiliary output (e.g.
  • Page 34 Preparing for installation System version 2 (type AW-O) (cont.) LP PCB (see page 68)
  • Page 35 Preparing for installation System version 2 (type AW-O) (cont.) B Control module for instantaneous heating water heater...
  • Page 36 Preparing for installation System version 2 (type AW-O) (cont.) LP PCB (see page 68)

  • Page 37: System Version 3 (Type Aw-O)

    Preparing for installation System version 2 (type AW-O) (cont.) Note Illustration of the required minimum settings. Code to be entered by "Contractor": 5243 For comfort characteristics and further information regarding control unit operation, see operating instructions. Setting parameters Parameter Setting Parameter group Basic settings System diagram...
  • Page 38 Preparing for installation System version 3 (type AW-O) (cont.)
  • Page 39 Preparing for installation System version 3 (type AW-O) (cont.) Equipment required Item Description Heat source Heat pump Instantaneous heating water heater with control module Heat pump control unit with connecting cable Circulation pump for cylinder heating (for type AWC-I: Integral 3-way di- verter valve "central/DHW heating") Secondary pump (accessory;...
  • Page 40 Preparing for installation System version 3 (type AW-O) (cont.) Item Description Heating circuit with mixer (M2) Underfloor heating circuit M2 (with directly controlled mixer) Vitotrol 200 remote control for heating circuit M2 Overflow valve, heating circuit M2 Flow temperature sensor heating circuit M2 Temperature limiter (maximum limit for underfloor heating) Heating circuit pump M2 3-way mixer, heating circuit M2...
  • Page 41 Preparing for installation System version 3 (type AW-O) (cont.) LP PCB (see page 68) A On-site contactor relay B Place jumper from X3.1 (LP1) to X7.1 (LP2) Note For further information regarding the terminal markings and PCBs, see from page 68.
  • Page 42 Preparing for installation System version 3 (type AW-O) (cont.) LP PCB (see page 68) A Control module for instantaneous heating water heater...
  • Page 43 Preparing for installation System version 3 (type AW-O) (cont.) LP PCB (see page 68)
  • Page 44 Preparing for installation System version 3 (type AW-O) (cont.) LP PCB (see page 68) Note Illustration of the required minimum settings. Code to be entered by "Contractor": 5243 For comfort characteristics and further information regarding control unit operation, see operating instructions. Setting parameters Parameter Setting...

  • Page 45: Dhw Heating 1

    Preparing for installation System version 3 (type AW-O) (cont.) Parameter Setting Parameter group Wtimer DHW Circ. Setting switch- 701B System definition ing times Ext. extension 7010 System definition Swimming pool 7008 System definition External heat source Ext. heat source 7B00 Ext. heat source 7B0D Ext.
  • Page 46 Preparing for installation DHW heating 1 (cont.) Equipment required Item Description DHW cylinder Electric immersion heater EHE Accessories Must be installed below upper cylinder temperature sensor 4 Not required if an instantaneous heating water heater is installed Only connect if the external heat source is not used for DHW heating Create circuit on site Switching times, auxiliary output (e.g.
  • Page 47 Preparing for installation DHW heating 1 (cont.) LP PCB (see page 68) Note For information regarding control unit operation, see operating instructions. Setting parameters Parameter Setting Parameter group Basic settings System diagram 0, 2, 4, 6, 8, 10 7000 System definition Wtimer DHW Circ.

  • Page 48: Dhw Heating 2

    Preparing for installation DHW heating 1 (cont.) Parameter Setting Parameter group Temp. sensor 2 Yes/No 600E DHW DHW heating 2 DHW cylinder with cylinder primary system Heat pump interface KW Cold water WW DHW Equipment required Item Description DHW cylinder Electric immersion heater EHE Accessories Must be installed below upper cylinder temperature sensor 4...
  • Page 49 Preparing for installation DHW heating 2 (cont.) Item Description Circulation pump for cylinder heating (max. 130 W, already installed and connected for type AWC-I) Cylinder temperature sensor, bottom (optional) Cylinder primary pump (max. 130 W) LP PCB (see page 68)
  • Page 50 Preparing for installation DHW heating 2 (cont.) For information regarding con- Note trol unit operation, see operat- The total output of all connected appli- ing instructions ances must not exceed 1000 W. If the total output 1000 W, the individual rating of a component (e.g.

  • Page 51: Preparing The Installation

    Installation sequence Preparing the installation Position and level the heat pump AWC-I/AW-O as described on page 8.

  • Page 52: Opening The Heat Pump

    Installation sequence Opening the heat pump...
  • Page 53 Installation sequence Opening the heat pump (cont.) Please note 1. Open the safety tab at the bottom The earth conductors are of the front panel. secured with screws to the inside of the casing panels. 2. Pull the lower front panel forward Never rip off the earth conduc- by its upper edge and lift out tors when removing the exter-...
  • Page 54 Installation sequence Opening the heat pump (cont.) 1. Undo the screws that secure the 2. Pull the lower side panel forward lower side panel. Slightly push the by its lower edge and lift out side panel vertically forwards, tip it upwards.
  • Page 55 Installation sequence Opening the heat pump (cont.) 4. Pull the upper side panel forward by its lower edge and lift out upwards. 1. Undo the screws that secure the 3. Undo the screws that secure the top panel. back panel. 2.

  • Page 56: Connections On The Primary Side

    Installation sequence Connections on the primary side Note 2. Finish off the external end of the Make the ventilation and extract air ventilation and extract air ducts apertures burglar-proof. with weather grilles. 1. Centre the wall outlets in the wall 3.
  • Page 57 Installation sequence Connections on the secondary side (heating . . . (cont.) Indoor installation (type AWC-I) A Heating water return (inner multi- C Condensate drain (already con- connect system G") nected) B Heating water flow (inner multi- D DHW cylinder flow (inner multi- connect system G") connect system G")
  • Page 58 Installation sequence Connections on the secondary side (heating . . . (cont.) A Heating water return (inner multi- connect system G") B Heating water flow (inner multi- connect system G") C Condensate drain (already con- nected) D DHW cylinder flow (inner multi- connect system G")
  • Page 59 Installation sequence Connections on the secondary side (heating . . . (cont.) Outdoor installation (type AW-O) A Heating water return (inner multi- C Condensate drain (already con- connect system G") nected) B Heating water flow / DHW cylinder D Insulation mat flow (inner multi-connect system G") Route the connections through insula-...

  • Page 60: Electrical Connections

    Installation sequence Electrical connections Overview of power cables Type AWC-I (indoor installation) A Heat pump control unit F Power supply, instantaneous B Control unit power supply 230 V/ heating water heater (9 kW, 50 Hz 400 V/50 Hz; 3/N/PE) C Further components / functions G Instantaneous heating water hea- D 2 connecting cables (see ter (accessory, installed in the...
  • Page 61 Installation sequence Electrical connections (cont.) Type AW-O (outdoor installation) A Heat pump control unit G Control module, instantaneous B Control unit power supply 230 V/ heating water heater (400 V/ 50 Hz 50 Hz; 3/N/PE, control panel with C Further components / functions 1 contactor installed inside the (see page 62) building)
  • Page 62 Installation sequence Electrical connections (cont.) Note Cable lengths: When installing an instantaneous Cable length applies from entry into heating water heater, set the para- appliance (for dimensions of entry meter "Max. e heating stage" (709A) apertures, see page 20). to 1 (see page 152). When trimming the cable, observe the length of cable required inside the control unit, i.e.
  • Page 63 Installation sequence Electrical connections (cont.) Please note 3. Strip the insulation as close to the Routing low voltage and terminal as possible. 230/400 V cables in close Length of the stripped part of proximity can create mutual mains cables approx. 10 cm interference.
  • Page 64 Installation sequence Electrical connections (cont.) Heat pump control panel A Control panel with electric compo- B Internal earth conductor nents 1. Undo 2 screws at the bottom of 2. Note control panel lid A. Release internal earth conductor B before removing the lid.
  • Page 65 Installation sequence Electrical connections (cont.) Pull the control panel lid off down- wards and lift out upwards. Inserting cables A 2 cable grommets (only for type D Connecting cables: LV and control AWC-I) cables (230 V~) with plug fitting B Insulation mat (for type AW-O, for E Power cable 400 V~ with cable fit- cable grommets from below) ting...
  • Page 66 Installation sequence Electrical connections (cont.) Note 4. Secure the cables for LV to the Route the 400 V~ power cable and cable bracket in a loop below the 230 V~ control cable together and front edge of the control panel, secure.
  • Page 67 Installation sequence Electrical connections (cont.) A PCB 1 (cross connect circuit C Terminal strip X8 board) D Terminal strip X7 B PCB 2 (main PCB) E Terminal strip X6 Terminals of cores to be removed: 1. Release 4 red cores from their 2X7.10 Ó...
  • Page 68 Installation sequence Electrical connections (cont.) Heat pump control unit Installed positions of the PCBs A PCB 1 (cross connect circuit B PCB 2 (main PCB) board) with control unit fuse C PCB 3 (sensor PCB) Note The terminal markings on the PCBs are preceded by the numbers 1 to 3.
  • Page 69 Installation sequence Electrical connections (cont.) PCB 1 (cross connect circuit board LP1) X1 Terminal for earth conductor incl. X3 Feed terminal, power supply to feed the control unit and auxiliary com- X2 Terminal for neutral conductor ponents incl. feed F1 Fuse, control unit and control panel control circuit Note Example: Terminal 1X2.N...
  • Page 70 Installation sequence Electrical connections (cont.) PCB 2 (main PCB LP2) A Coding card slot External 230 V~ connections External 230 V~ connections Control of auxiliary DHW cylin- Message der heating Switching times, auxiliary out- Circulation pump for cylinder put (e.g. DHW circulation heating pump) Heating circuit pump for heat-...
  • Page 71 Installation sequence Electrical connections (cont.) Connection options on PCB 2 (LP2) Terminals 2X7.1 to 2X7.13 Terminals 2X8.1 to 2X3.13 PCB 3 (sensor PCB LP3) X1 Sensor connections X2 Common earth connection (GND) Outside temperature Heating water buffer cylinder temperature Flow temperature, external heat source mixer circuit Flow temperature, heating cir- cuit with mixer M2...

  • Page 72: Positioning Of All Electrical Connections

    Installation sequence Electrical connections (cont.) Connection options on PCB 3 (LP3) Note Terminals 3X1.1 to 3X1.27 The consecutive numbers of the term- Terminals 3X2.1 to 3X2.29 inals are not the same as the sensor Sensor terminals F0 to F20 designation. Positioning of all electrical connections In case of some accessories, parameters may have to be changed.
  • Page 73 Installation sequence Positioning of all electrical connections (cont.) Equipment Connection Comments Setting parameters (group) Heating circuit Plug 20 Connection to extension kit, heating pump for heating circuit M3 circuit with mixer 7000 System diagram with heating (M3) circuit M3 Solar circuit pump To Vitosolic See Vitosolic installation instructions (collector pump)
  • Page 74 Installation sequence Positioning of all electrical connections (cont.) Equipment Connection Comments Setting parameters (group) External 3X1.25Ó2 aVG See separate installation instruc- extension H1 3X2.25Ó1 aVG tions 7010 Ext. extension (connection to KM BUS) Ó Yes (system definition) Vitocom 100 3X1.25Ó2 aVG KM BUS control (connection to KM 3X2.25Ó1 aVG BUS)
  • Page 75 Positioning of all electrical connections (cont.) Installation instructions, instan- Installation instructions, control taneous heating water heater module for instantaneous heat- for the Vitocal 300-A (acces- ing water heater for the sory). Vitocal 300-A, type AW-O, (accessory). Installation instructions, control module for instantaneous heat-...

  • Page 76: External Heat Source

    Installation sequence Positioning of all electrical connections (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. Note The switching contact to demand heat from the external heat source...

  • Page 77: Connection Of External Electrical Components

    Installation sequence Positioning of all electrical connections (cont.) Note The heat pump sensor F20 must record the temperature of the external heat source medium. Connection to the Vitodens and Vitopend A Heat pump connection: Contact load 230 V, 4(2) A, zero volt con- tact B Transfer jumper from 1X3.1 to 2X7.1...
  • Page 78 Installation sequence Connection of external electrical components (cont.) For integration into a system, a sec- Circulation pump for cylinder heat- ondary pump group (accessories) is available: Secondary pump (max. 130 W, 230 V/50 Hz) Circulation pump for cylinder heat- ing (max. 130 W, 230 V/50 Hz) Note No parameters need to be set.
  • Page 79 Installation sequence Connection of external electrical components (cont.) General connection Connection with temperature limiter A Terminals on PCB 2 (7151728, 7151729) to extension kit B Temperature limiter for underfloor heating A Plug sÖ for extension kit C Heating circuit pump A1, M2 B Temperature limiter for underfloor heating C Heating circuit pump M3...
  • Page 80 Installation sequence Connection of external electrical components (cont.) "Ext. demand", "Ext. mixer open", "Operating mode change- over" These functions can also be connected via the "External extension H1". The switching function via "H1" can only be used for one function at the time (e.g. swimming pool water heating or "Ext.
  • Page 81 Installation sequence Connection of external electrical components (cont.) External operating mode changeover Equipment Connection Comments ID Setting parameters (P group) External operating See the following 7011 Changing the heating circuit mode changeover illustration operating mode 0 Ó 10 (system definition) 7012 Effect of operating mode changeover 0 Ó...
  • Page 82 Installation sequence Connection of external electrical components (cont.) Function "External mixer close" Equipment Connection Comments Setting parameters (group) Mixer close See the previous Observe parameter 701A screen 7015 External blocking / mixer close 0 Ó 8 (system definition) Swimming pool water heating Applications with "External extension H1"...
  • Page 83 Installation sequence Connection of external electrical components (cont.) A Connection inside the heat pump E Circulation pump for swimming B KM BUS pool water heating (accessory) C External extension H1 F Swimming pool thermostat (zero D 3-way diverter valve "Swimming volt N/O, 230 V/50 Hz;...
  • Page 84 Installation sequence Connection of external electrical components (cont.) For further information, see the follow- ing chapter: Power connection from page 93. Power connection, compressor, page 97. A Terminals on PCB 1 Contact open: Block enabled B Zero volt N/C contact Contact closed: Block disabled Note...
  • Page 85 Installation sequence Connection of external electrical components (cont.) Equipment Connection Comments Setting parameters (group) Cascade control, See following dia- The connection to the second, third lead appliance gram on page 86. and fourth heat pump is made using the zero volt contact at the "Ext. de- mand"...
  • Page 86 Installation sequence Connection of external electrical components (cont.) A Heat pump 1 (lead appliance) G Heat pump 3 (lag appliance) B KM BUS H Zero volt contact C External extension H1 K Heat pump 4 (lag appliance) D Zero volt contact L Central fault message input, lag E Heat pump 2 (lag appliance) heat source...

  • Page 87: Power Supply

    Installation sequence Connection of external electrical components (cont.) Central fault message Equipment Connection Comments Setting parameters (group) Central fault mes- See the following Zero volt contact, opened during sage illustration fault-free operation; never use this contact for voltages < 42V Breaking capacity: 230 V~;...
  • Page 88 Installation sequence Power supply (cont.) Main isolator requirements (if necessary) If a main isolator is set, it must isolate If no main isolator is set, all non- the power circuit with at least 3 mm earthed cables must be isolated by contact separation.
  • Page 89 Installation sequence Power supply (cont.) Please note The control unit/electronics feed An incorrect phase sequence must be implemented without possi- can cause damage to the unit. ble blocking from the power supply The power supply to the com- utility; tariffs that are subject to possi- pressor must have a clock- ble shutdowns must not be applied to wise rotating field in the phase...
  • Page 90 Installation sequence Power supply (cont.) Location of connections and cable entries...
  • Page 91 Installation sequence Power supply (cont.) A Control panel B Contact shield...
  • Page 92 Installation sequence Power supply (cont.) 1. Open the heat pump (see 3. Remove contact shield G from the page 52, 60). mains terminals. 2. Open the control panel (see 4. Route the 400 V~ power cable page 60). through the cable fitting (supplied) into the control panel, connect and apply strain relief.
  • Page 93 Installation sequence Power supply (cont.) Note Installation instructions, control The control module for the instanta- module for instantaneous heat- neous heating water heater for type ing water heater (accessory) AW-O is mounted to the wall in a separate casing next to the installa- tion location of the instantaneous heating water heater.
  • Page 94 Installation sequence Power supply (cont.) Shown excluding fuses and RCD. D Ripple control receiver (contact open: power-OFF enabled) A Compressor E Backup fuse ripple control recei- B Instantaneous heating water hea- F High tariff meter C Control unit and accessories G TNC system feed H Low tariff meter Power supply with power-OFF (with on-site load disconnect-...
  • Page 95 Installation sequence Power supply (cont.) Shown excluding fuses and RCD. E Heating system main isolator F High tariff meter A Control unit and accessories G Ripple control receiver (contact B Instantaneous heating water hea- open: power-OFF enabled) H Low tariff meter C Compressor K TNC system feed D Control unit power supply...
  • Page 96 Installation sequence Power supply (cont.) Note If the compressor and/or the instanta- neous heating water heater are oper- ated at a lower tariff (power-OFF), provide an additional cable for the switching contact "Power-OFF" (e.g. NYM 3x1.5 mm ) from the distribution board (meter box) to the heat pump.
  • Page 97 Installation sequence Power supply (cont.) Compressor and fan power supply Low tariff and power-OFF can be used. Fuse protection in accordance with the compressor rating (see specifi- cation). No parameters need to be set when using low tariff with power-OFF. During the power-OFF period, the B Mains terminals inside the heat compressor will be mechanically...
  • Page 98 Installation sequence Power supply (cont.) Power supply, instantaneous heating water heater (type AWC-I) A 5-core power cable (recom- B Control module for the instanta- mended cable 5 x 2.5 mm neous heating water heater with mains terminals C 2 jumpers inserted at the factory at the neutral conductor (do not remove) Note...

  • Page 99: Phase Monitor

    Installation sequence Power supply (cont.) Fit contact shield in front of the mains terminals and if required, seal the low tariff connection (see the following chapter). Phase monitor The phase monitor is used to monitor the mains power supply to the compres- sor.
  • Page 100 Installation sequence Power supply (cont.) LEDs explained LED "Rel" illuminates green: All voltages and the rotating field (clockwise) are healthy. LED "Ph" illuminates red: The relay has responded; the rotat- ing field is anti-clockwise. All LED's off: One or several phases have dropped out.

  • Page 101: Closing The Heat Pump

    Installation sequence Closing the heat pump 1. Close the control panel in reverse 3. Fit the separately delivered silen- order (see page 64). cer hoods (type AW-O) with the screws supplied. 2. Fit the outer panels in reverse order (see page 52).

  • Page 102: Commissioning, Inspection, Maintenance Steps - Commissioning, Inspection And 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. Removing the front panels ..........2.

  • Page 103: Further Details Regarding The Individual Steps

    Commissioning, inspection, maintenance Further details regarding the individual steps Removing the front panels 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 terminals prevent equipment damage.
  • Page 104 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Checking the refrigeration circuit for leaks 1. Check the floor area, valves and all Note visible solder joints for traces of oil. Traces of oil indicate a leaking refrig- erant circuit. Ask a refrigeration engi- 2.
  • Page 105 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Please note 8. Switch ON the power. To prevent equipment damage, check the flow 9. Remove the cause if the relay and return connections of activates. The relay does not the secondary heat pump need to be reset.
  • Page 106 Ice must not form on the outside of the compressor, and the housing must not become warmer than 60 °C (otherwise consult the Tech- nical Service department at Viessmann). Setting the control parameters 1. Activate the "Contractor level". 3. Acknowledge all messages (see For information regarding the page 116).
  • Page 107 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Function Explanation Safety scan Check at the start of the commissioning as- sistant Access rights Authorisation of service personnel via code input (see page 108) Programming System configuration in accordance with a system diagram and individual components Sensor temperatures Checking and matching sensor temperatures...
  • Page 108 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 1. Open the programming unit flap in 3. Press key 6 E on the program- the front panel by pressing on the ming unit whilst the progress bar is flap. filling from left to right.
  • Page 109 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 2. Should "Messages" already be dis- played, these can be skipped with keys "ALL" and "BACK". 4. Programming Note 2. Return to the "Programming" level For further help and information, see via key "BACK".
  • Page 110 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 7. Outputs Each output (relay) can be switched individually. Each individual function can be enabled with the relay test (internal and external components). Please note 1. Activating the components. Safety elements will shut down the compressor and instanta- 2.
  • Page 111 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Commissioning programs System components Control unit tasks Heating circuit 1 Venting Start secondary pump and heating circuit pump 1. Heating circuit 2/3 Venting Heating circuit pump 2/3. Open/close mixer every 5 min. DHW (DHW cylinder) Venting Start secondary pump and cir-...
  • Page 112 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Note In this case, the messages are not necessarily notifications of appliance faults. These may have been created by the manual control of some compo- nents during commissioning.
  • Page 113 Troubleshooting Control unit diagnostics Overview of the programming unit A Display G No function B Rotary selector H Display area for current operating "Reduced room temperature" conditions C Rotary selector K Message display area "Standard room temperature" L Display area for set temperatures D Operating mode selector M Enabled system components dis- E "Standard display"...

  • Page 114: Troubleshooting Control Unit Diagnostics

    Troubleshooting Control unit diagnostics (cont.) Messages Messages are grouped, displayed and saved in 3 categories (see from page 116): Fault (highest priority) Warning (medium priority) Note (lowest priority) Fault Standard display: The fault symbol The fault message with an addi- "U"...
  • Page 115 Troubleshooting Control unit diagnostics (cont.) The appliance retains its functional- ity, however the information needs to be noted. Recommendation: To scan further notes enter the access code for con- tractors (Code: 5243) (see page 108). Messages scanning This is where all messages are dis- "Device settings"...

  • Page 116: Acknowledging Messages

    Troubleshooting Control unit diagnostics (cont.) Acknowledging messages If there are messages, these will be Access shown after the system has been Press "Standard display" (see started (see page 107). page 113): Messages appear. Acknowledged messages remain in "ALL" ("º" appears behind all the list, until the control unit has messages) recognised that the cause for the...
  • Page 117 Troubleshooting Control unit diagnostics (cont.) Message Cause Access (priority) Measures right System fault Control unit processor faulty Customer ("U") Replace the programming unit Std after data Delivered condition set after recogni- Customer err ("!") tion of the data fault Reconfigure the system Configuration Incorrect configuration of system Customer...
  • Page 118 Troubleshooting Control unit diagnostics (cont.) Message Cause Access (priority) Measures right Flow sensor Short circuit, primary flow tempera- Customer primary ("U") ture sensor (IN) Check the sensor and replace, if required Primary return Short circuit, primary return tempera- Customer sens. ("U") ture sensor (OUT) Check the sensor and replace, if required...
  • Page 119 Troubleshooting Control unit diagnostics (cont.) Message Cause Access (priority) Measures right Flow sensor Break, system flow Customer system ("U") Check the sensor and replace, if required DHW sensor Short circuit, DHW temperature sen- Customer top ("U") sor, top Check the sensor and replace, if required DHW sensor Short circuit, DHW temperature sen-...
  • Page 120 Troubleshooting Control unit diagnostics (cont.) Message Cause Access (priority) Measures right Buffer cyl.sen- Break, heating water buffer cylinder Customer sor ("U") temperature sensor Check the sensor and replace, if required Ext. heat Break, external heat source tem- Customer source ("U") perature sensor Check the sensor and replace, if required...
  • Page 121 Troubleshooting Control unit diagnostics (cont.) Message Cause Access (priority) Measures right Collector sen- Short circuit, collector temperature Customer sor ("U") sensor solar - Vitosolic Check the sensor and replace, if required (see Vitosolic installation instructions) Collector sen- Solar collector temperature sensor Customer sor ("U") interrupted - Vitosolic...
  • Page 122 Troubleshooting Control unit diagnostics (cont.) Message Cause Access (priority) Measures right Electric heat- Danger Customer ing ("U") Touching 'live' components in the working area can result in the transfer of dangerous body currents. Ensure the device is at zero volts before carrying out the instantaneous heating water heater or prior to resetting the high limit safety cut-out.
  • Page 123 Troubleshooting Control unit diagnostics (cont.) Message Cause Access (priority) Measures right KM Bus EEV Communication error EEV module Customer ("U") Check leads/cables, PCB refrigerant circuit controller: Check the power supply and replace the PCB, if required A-D converter Internal fault ADC (reference), rib- Customer ("U") bon cable between sensor PCB and...
  • Page 124 Troubleshooting Control unit diagnostics (cont.) Message Cause Access (priority) Measures right Power supply Fault, compressor power supply, Customer monitor ("U") power circuit; phase monitor faulty Power supply, rotating field, asym- metry, check for phase failure and components Power-OFF Power-OFF enabled Customer ("i") No measures required...
  • Page 125 Troubleshooting Control unit diagnostics (cont.) Message Cause Access (priority) Measures right Compressor Thermal compressor relay or safety Customer ("U") element of the full wave soft starter (if fitted) has responded Reset the thermal relay, check the setting, perform a "reset", check the connection, check the coil resis- tance, adjust the phase sequence at the compressor...
  • Page 126 Troubleshooting Control unit diagnostics (cont.) Characteristics and effects of system/control unit Outside temperature is assumed to be -40 °C. The temperature value of the secondary return temperature sensor plus 5 K is selected. The heat pump is stopped (message A9) if the sec- ondary flow and return sensors are faulty.
  • Page 127 Troubleshooting Control unit diagnostics (cont.) Access Main menu Device settings Contractor level Further menu items Diag. HP module The information line (second line from the top of the display) contains the fol- lowing details: 0000 0000 0000 The last 4 digits designate the ver- sion of the hardware and software of the heat pump module.
  • Page 128 Troubleshooting Control unit diagnostics (cont.) Po Evaporation pressure heat pump 1 and 2 Pc Condensation pressure heat pump 1 and 2 The info line in the display contains a left hand and right hand group of fig- ures: Compressor stage 1 Compressor stage 2 Fault Messages...
  • Page 129 Troubleshooting Control unit diagnostics (cont.) Hours run [h] display of the heat Load classes pump subject to the respective load. In case of temperature ramp < 25 to Hours run [h] are cumulative start- 32 K ing from the commissioning. These In case of temperature ramp 25 to cannot be deleted.

  • Page 130: Diagnosis

    Troubleshooting Control unit diagnostics (cont.) The value must be checked and pos- Solar heating system operating sibly adjusted as follows: instructions (for energy state- Commissioning ment for the solar heating sys- Reset with "Standard display" tem) Activating the "Reset" function Diagnosis Measures in case the room temperature is constantly too low Carry out the following steps to troubleshoot the problem.

  • Page 131: Control Unit Settings By The Contractor

    Control unit settings Menu structure overview main menu Separate document; menu tree Control unit settings by the contractor Only those settings are described on Access the following pages that are the Should "Messages" already be dis- exclusive domain of specialists oper- played, these can be skipped with ating at the contractor level.

  • Page 132: System Diagram

    System definition control settings System diagram Parameter "System definition" 7000 "System diagram" Select the system diagram during l or m commissioning. This selection automatically enables Standard setting and monitors all components asso- Setting range 0 to 11 ciated with the respective scheme. Access "Device settings"...

  • Page 133: Swimming Pool

    System definition control settings Temperature differential heating (cont.) Access "Device settings" "Programming" "System definition" y to "Temp. diff. heating" 5 or % Standard setting Setting range 0 to 20 K A Set room temperature B Outside temperature C Selected value "Temp. diff. heat- ing"...

  • Page 134: Cascade Control (Lag Appliance)

    System definition control settings Cascade control (lead appliance) (cont.) Standard setting Note Setting range 0 to 2 Observe parameter 5735 (number of Explanation: external heat pumps). 0 No cascade 1 Cascade control via "External extension H1" 2 No function Cascade control (lag appliance) Parameter "System definition"...

  • Page 135: External Extension

    System definition control settings External extension Parameter External blocking 7010 External mixer CLOSE Details whether an external extension H1 is connected. Access "Device settings" The external extension H1 can be "Programming" used for the following functions: "System definition" Swimming pool water heating y to"Ext.

  • Page 136: External Operating Mode Changeover Effect

    System definition control settings External operating mode changeover heating . . . (cont.) No. Affects the following system components 8 M2: Heating circuit with mixer M3: Heating circuit with mixer, DHW heating 9 A1: Heating circuit without mixer M2: Heating circuit with mixer M3: Heating circuit with mixer 10 A1: Heating circuit without mixer M2: Heating circuit with mixer...

  • Page 137: External Demand/Mixer Open

    System definition control settings External operating mode changeover duration (cont.) Settings explained: No specified duration; change- over takes place as long as the changeover contact remains closed. 1 - 12 Duration of the changeover starting with the activation of the operating mode change- over.

  • Page 138: External Bocking/Mixer Close

    System definition control settings External demand/mixer OPEN (cont.) No. Function of the following system components 6 M2: Heating circuit with mixer control mode M3: Heating circuit with mixer moves into the OPEN position Heat demand to the heat pump 7 M2/M3: Heating circuits with mixer move into the OPEN position Heat demand to the heat pump External bocking/mixer CLOSE...

  • Page 139: Vitocom 100

    System definition control settings External bocking/mixer CLOSE (cont.) No. Function to the associated setting 6 M2: Heating circuit with mixer control mode M3: Heating circuit with mixer moves into the CLOSE position Heat pump blocking 7 M2/M3: Heating circuits with mixer move into the CLOSE position Heat pump blocking Vitosolic type...
  • Page 140 System definition control settings External blocking effect (cont.) Access y to"Ext. blocking effect" "Device settings" l or m "Programming" "System definition" Standard setting Setting range 0 - 31 Value Secondary Cylinder Heating Heating Heating cir- pump/ pump circuit circuit cuit pump compres- blocked pump...

  • Page 141: Additional Output With Switching Times (E.g. Dhw Circulation Pump)

    System definition control settings External blocking effect (cont.) Value Secondary Cylinder Heating Heating Heating cir- pump/ pump circuit circuit cuit pump compres- blocked pump pump A1 blocked blocked blocked blocked Additional output with switching times (e.g. DHW circulation pump) Parameter Operating instructions 701B...

  • Page 142: Number Of External Heat Pumps

    Compressor control settings Compressor enable Parameter "Compressor" 5000 y to "Enable" Access Standard setting "Device settings" Setting range Yes/No "Programming" Heat pump output Parameter Type Output in kW 5030 AWC-I Entry of the output for the energy AW-O statement. If the current drawn and the heating energy transferred to the Access heating system are to be determined...
  • Page 143 Compressor control settings Number of external heat pumps (cont.) Standard setting Explanation: Setting range 0 to 4 No lag heat pump 1-3 Number of lag heat pumps No function...

  • Page 144: Control Settings, External Heat Source External Heat Source

    Control settings, external heat source External heat source Parameter Access 7B00 "Device settings" Details of an external heat source "Programming" (ext. HS) integrated into the heating "Ext. heat source" system. y to "Ext. heat source" "YES" or "NO" Note All following parameters will only Standard setting become visible after an external heat Setting range...

  • Page 145: External Heat Source For Dhw

    Control settings, external heat source External heat source for DHW Parameter Access 7B0D "Device settings" Details as to whether an external heat "Programming" source is to be used for DHW heating. "Ext. heat source" In case of higher heating demand y to "Ext.

  • Page 146: Dhw Control Settings Cylinder Temperature Dhw

    DHW control settings Cylinder temperature DHW Parameter Operating instructions 6000 DHW switching times Parameter Operating instructions 6001 Min. temperature Parameter If 2 cylinder temperature sensors are 6005 fitted, only the top sensor will be used The minimum temperature prevents to capture the temperature. the DHW temperature inside the DHW cylinder from falling too low (frost pro- Access...

  • Page 147: Hysteresis/Hysteresis Booster Heater

    DHW control settings Max. temperature (cont.) Danger Access DHW with temperatures in "Device settings" excess of 60 ºC can cause "Programming" scalding. "DHW" To limit the temperature to y to"Max. temp." 60 °C, install a mixing device, T or U e.g.

  • Page 148: Start Optimisation Dhw

    DHW control settings Hysteresis/Hysteresis booster heater (cont.) Note "DHW" The value selected for "Hysteresis" y to"Hysteresis" should be higher than the expected temperature drop due to heat losses y to"Hyst. booster heater" in a single night (approx. 5 K). 5 or % A lower value for "Hyst.

  • Page 149: Temperature Sensor

    DHW control settings Set DHW temperature 2 Parameter Operating instructions 600C Temperature sensor 2 Parameter DHW heating is started with the 600E switching times stages using the A second temperature sensor offers upper temperature sensor, in case of improved utilisation of the DHW cylin- max.

  • Page 150: Dhw With Electric Heating

    DHW control settings DHW with electric heating Parameter Operating instructions 6015 DHW with electric booster heater.

  • Page 151: Electric Heating

    Control settings, electric heater Instantaneous heating water heater Parameter Operating instructions 7900 Setting an electric booster heater Access (accessory) installed in the heating "Device settings" flow. Otherwise it cannot be controlled "Programming" by the control unit. "Electric heating" y to "Inst.htg.water heat" Please note "YES"...

  • Page 152: Stage For Power-Off

    Control settings, electric heater Max. stage electric booster heater (cont.) Settings explained: 1 max. 3 kW 2 max. 6 kW 3 max. 9 kW Stage for power-OFF Parameter "Electric heating" 790A y to "Stage at power-OFF" Setting of the output stage for the l or m electric heater (instantaneous heating water heater) that will be enabled...

  • Page 153: Screed Program

    Control settings, hydraulics Heat pump for drying buildings Parameter Access 7300 "Device settings" This setting determines whether the "Programming" heat pump is used to dry the building "Internal hydraulics" as well as the instantaneous heating y to "HP for dry. building" water heater.
  • Page 154 Control settings, hydraulics Screed program (cont.) Temperature/time profile 1 (in acc. Temperature/time profile 4 with EN 1264-4) A Flow temperature A Flow temperature B Days B Days Temperature/time profile 5 Temperature/time profile 2 (to ZV parquet and flooring technology) A Flow temperature B Days A Flow temperature Temperature/time profile 6...

  • Page 155: Set Flow Temperature, External Demand

    Control settings, hydraulics Screed program (cont.) Temperature/time Duration of Within the temperature/time profiles 7 profile max. flow to 12, the system regulates to the pro- temperature grammed value (max. flow tempera- Profile 11 25 days ture) for a period of between 5 and 30 Profile 12 30 days days (see page 160).

  • Page 156: Buffer Cylinder Switching Times

    Control settings, heating water buffer cylinder Buffer cylinder Parameter In system scheme 2, if a heating 7200 water buffer cylinder is part of the sys- tem, that must be selected by opting Note for "Yes". This function is only available for system scheme 1 and 2.

  • Page 157: Hysteresis

    Control settings, heating water buffer cylinder Hysteresis Parameter 7203 Note This function is only available in case of system scheme 1 and 2, if the option "Yes" was selected under "Buffer cylinder". This setting determines at what devia- tion from the selected set room tem- A Set temperature perature the heating of the heating B Start hysteresis...

  • Page 158: Control Settings, Heating Circuits Standard Room Temperature

    Control settings, heating circuits Standard room temperature Parameter Separate setting of switching times for 2000 - HK A1 all heating circuits A1, M2 and M3. 3000 - HK M2 4000 - HK M3 Operating instructions Reduced room temperature Parameter Separate setting of switching times for 2001 - HK A1 all heating circuits A1, M2 and M3.

  • Page 159: Heating Curve Level

    Control settings, heating circuits Heating curve level Parameter Separate setting of switching times for 2006 - HK A1 all heating circuits A1, M2 and M3. 3006 - HK M2 4006 - HK M3 Operating instructions Heating curve slope Parameter Separate setting of switching times for 2007 - HK A1 all heating circuits A1, M2 and M3.

  • Page 160: Maximum Flow Temperature

    Control settings, heating circuits Room temperature hook-up (heating circuits) (cont.) Room temperature hook-up only in standard mode Room temperature hook-up in standard and in reduced mode Access l or m "Device settings" Also applies to heating circuit 2 and "Programming" heating circuit 3 "Heating circ.
  • Page 161 Control settings, time Automatic summer/winter time changeover Parameter Access 7C00 "Device settings" 7C01 "Programming" 7C02 "Time" 7C03 "Auto. Su./wi. time" 7C04 "YES"/"NO" to enable/dis- 7C05 able"Auto. su./wi. change". 7C06 y/x until the value to be Date and time are factory-set and may adjusted is highlighted (see the be changed manually.

  • Page 162: Sensor Resistance Curves

    Components Sensor resistance curves Temperature sensor Further sensors Further sensors: Capturing element made of "Pt 500" Room temperature sensors: DHW cylinder sensors, top/bottom Capturing element made of "Ni 500" Heating water buffer cylinder sensor Flow temperature sensors, heating System flow sensor circuit External heat source sensor Outside temperature sensor...

  • Page 163: Pcb 1: Message And Safety Components

    Connection and wiring diagrams Overview of the PCBs and connection options Note No accurate physical layout is shown in any of the following connection dia- grams. For PCB overview, see from page 68. PCB 1: Message and safety components q¢Q ON/OFF switch q¢E External demand, zero volt con- q¢W External blocking, zero volt con- tact...
  • Page 164 Connection and wiring diagrams PCB 1: Message and safety components (cont.) q¢R Message, lag heat source, zero q¢Z Power-OFF (jumper fitted in the volt contact closed: No fault delivered condition, remove jum- (delivered condition: jumper per if making this connection, fitted) contact closed: Safety chain has q¢T Jumper in safety chain...
  • Page 165 Connection and wiring diagrams PCB 1: Message and safety components (cont.) Function Explanation Connection External blocking / mixer Connect zero volt contact on site: 1X3.2 CLOSE Closed = blocking enabled 1X3.14 Open = no blocking or to exter- Breaking capacity 230 V, 0.1 A nal exten- sion H1 Power-OFF...

  • Page 166: Pcb 2: Function Components 230 V

    Connection and wiring diagrams PCB 2: Function components 230 V w¢Q Radial fan control w¢T Mixer motor, heating circuit M2 - w¢E Secondary pump OPEN w¢R Control, instantaneous heating w¢Z Mixer motor, heating circuit M2 - water heater (stage 1) CLOSE...
  • Page 167 Connection and wiring diagrams PCB 2: Function components 230 V (cont.) w¢U Heating circuit pump, heating wYR Mixer motor, external heat circuit (M2) source - CLOSE w¢I Cylinder primary pump (in case wYT Heating circuit pump, heating cir- of a cylinder primary system at cuit without mixer A1 (if heating the DHW cylinder, shut-off valve) water buffer cylinder is installed)
  • Page 168 Connection and wiring diagrams PCB 2: Function components 230 V (cont.) Function Explanation Connection Control, instantaneous Install control module (accessory) 2X7.5 heating water heater P=10 W (stage 2) Control of the mixer motor U=230 V 2X7.7 for the external heat source, signal OPEN Control of the mixer motor U=230 V...
  • Page 169 Connection and wiring diagrams PCB 2: Function components 230 V (cont.) Function components 230 V on PCB 2 (motherboard, terminal strip X8) Function Explanation Connection End of safety chain 'Live' in case of fault-free safety 2X8.1 chain Compressor control via Control internal contact between 2X8.2 controller of the electronic...
  • Page 170 Connection and wiring diagrams PCB 2: Function components 230 V (cont.) Function Explanation Connection Cylinder primary pump, 2- In systems with cylinder primary 2X8.12 way shut-off valve system: Install pump between the DHW cylinder and the additional heat exchanger. Control 2-way shut-off valve in par- allel Pmax.=130 W Observe the information regarding...

  • Page 171: Pcb 3: Sensors And Km Bus

    Connection and wiring diagrams PCB 3: Sensors and KM BUS e¢Q KM BUS e¢Z Flow, heating circuit with e¢W Heating water buffer cylinder mixer M2 e¢E Outside temperature e¢U System flow (downstream of the e¢R DHW cylinder, top heating water buffer cylinder or e¢T DHW cylinder, bottom external heat source)
  • Page 172 Connection and wiring diagrams PCB 3: Sensors and KM BUS (cont.) eYP External heat source eYQ Secondary heating water flow (type AWC-I has a sensor installed at the factory; for type AW-O it is fitted on site in the heating water flow) Connection markings For PCB overview, see from page 68.

  • Page 173: Safety Chain (Explanations)

    Connection and wiring diagrams Safety chain (explanations) The following diagrams showing the SHD1 Safety high pressure safety chain contain the individual switch safety elements. Low pressure switch For further details regarding the PCBs RHD1 Control high pressure and terminal markings, see from switch page 68.

  • Page 174: Safety Chain (Part 1)

    Connection and wiring diagrams Safety chain (part 1) A Power supply B Connection, control circuit (part 1), see page 176 C External demand D Fault message, lag heat source E Jumper F External blocking G Power-OFF, jumper installed H Message input, power-OFF K Phase monitor switching contact L Phase monitor message input M Connection, safety chain (part 2),...

  • Page 175: Safety Chain (Part 2)

    Connection and wiring diagrams Safety chain (part 2) A Connection, safety chain (part 1), see page 174 B Jumper C Thermal circuit breaker, radial fan D Primary source message input (air) E Safety high pressure switch F Low pressure message (jumper fitted at the factory) G Control high pressure (jumper fitted at the factory)

  • Page 176: Control Circuit (Part 1)

    Connection and wiring diagrams Control circuit (part 1) Note The total output of all connected appli- ances must not exceed 1000 W. If the total output 1000 W, the individual rating of a component (e.g. pump, valve, message facility, contactor) can be greater than specified.

  • Page 177: Control Circuit (Part 2)

    Connection and wiring diagrams Control circuit (part 2) O Connection, control circuit (part 1), see page 176 B Compressor relay (control unit enable) C Radial fan D Protective motor switch, evapora- tor / radial fan (if protective motor switch is installed, jumper is fitted at the factory;...

  • Page 178: Control Circuit (Part 3)

    Connection and wiring diagrams Control circuit (part 3) P Control circuit connection (part T Radial fan 2), see page 177 RD red R Stage 1 YE yellow S Stage 2 BN blue...

  • Page 179: Power Circuit - Compressor

    Connection and wiring diagrams Power circuit - compressor A Compressor power supply B Phase monitor (see also page 99) C Compressor contactor K1 (see also page 177) D Protective motor relay (see also page 175) E Starter F Compressor...

  • Page 180: Power Circuit - Instantaneous Heating Water Heater

    Connection and wiring diagrams Power circuit - instantaneous heating water heater A Power supply, instantaneous heating water heater at the control module B Control module for instantaneous heating water heater C Stage 1 D Stage 2 E Instantaneous heating water hea- ter (accessory)
  • Page 181 Parts lists Parts list, type AWC-I When ordering spare parts: 036 Fill & drain valve G " Quote the part and serial no. (see 037 Connector D28 type plate) and the item no. of the 038 Hose required part (as per this parts list). 041 Gasket A 7 30 x 44 x 2 mm 043 Gasket 7 21 x 30 x 2 mm Obtain standard parts from your local...

  • Page 182: Parts Lists Parts List, Type Awc-I

    301 Touch-up spray, Vitosilver 209 Bottom l.h. side panel 302 Vitocal 300-A installation/service 210 Viessmann logo instructions 211 Vitocal 300 logo 303 Vitocal 300-A operating instruc- tions Parts not shown 025 Diaphragm safety valve G ½" x A Type plate ¾", 3 bar...
  • Page 183 Parts lists Parts list, type AWC-I (cont.)
  • Page 184 Parts lists Parts list, type AWC-I (cont.)
  • Page 185 Parts lists Parts list, type AWC-I (cont.)
  • Page 186 Parts lists Parts list, type AWC-I (cont.)
  • Page 187 Parts lists Parts list, type AWC-I (cont.)

  • Page 188: Parts List, Type Aw-O

    Parts lists Parts list, type AW-O When ordering spare parts: 050 Threaded connector Quote the part and serial no. (see 051 Inlet ring type plate) and the item no. of the 052 Radial fan required part (as per this parts list). 053 Spiral hose Obtain standard parts from your local 100 Programming unit...
  • Page 189 213 Cover grille 301 Touch-up spray, Vitosilver 302 Vitocal 300-A installation/service Parts not shown instructions 121 Temperature sensor 303 Vitocal 300-A operating instruc- 130 Auxiliary contact tions 131 Cable kit, electronic expansion valve A Type plate 136 Control module cable kit...
  • Page 190 Parts lists Parts list, type AW-O (cont.)
  • Page 191 Parts lists Parts list, type AW-O (cont.)
  • Page 192 Parts lists Parts list, type AW-O (cont.)
  • Page 193 Parts lists Parts list, type AW-O (cont.)
  • Page 194 Parts lists Parts list, type AW-O (cont.) AWC-I and AW-O wiring chamber...

  • Page 195: Hydraulic Parameter Report

    Commissioning/service reports Hydraulic parameter 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 IN temperature °C Primary air OUT temperature °C Temperature differential T at: "Secondary flow"...
  • Page 196 Commissioning/service reports Control parameter report (cont.) Setting parameters Setting range Standard Commission- setting Cascade control (lead 0 to 2 appliance) Cascade control (lag 7000Ó0 to 11 7000Ó11 appliance) 700AÓ0 to 2 700AÓ0 Output, lag heat pump 0 to 255 kW 10 kW External extension Yes/No...
  • Page 197 Commissioning/service reports Control parameter report (cont.) Setting parameters Setting range Standard Commission- setting Cylinder temperature, 10 to 70 °C 10 °C DHW switching times 0 to 3 Min. temperature 5 to 60 °C 10 °C Max. temperature 20 to 80 °C 60 °C Hysteresis 1 to 10 K...
  • Page 198 Commissioning/service reports Control parameter report (cont.) Setting parameters Setting range Standard Commission- setting DHW with electric Yes/No power Electric heating Instantaneous heating Yes/No water heater Electric heating Yes/No Max. stage, electric 1 to 3 booster heater Stage for power-OFF 0 to 3 Hydraulic Heat pump for drying Yes/No...

  • Page 199: 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. The stated current indicates the max.
  • Page 200 Specification Specification (cont.) Components Connec- Connected Voltage [V] max. break- tion load [W] ing capa- city [A] Central fault message 2X7.12 zero volt 4(2) 2X7.13 contact Total current max. 5(3) A Vitocal 300 Type AWC-I AW-O Output data at 100% to EN 14511 (2/35 °C, 5 K spread) Rated heating output Power consumption...
  • Page 201 Specification Specification (cont.) Vitocal 300 Type AWC-I AW-O Rated voltage 3/N/PE ~ 400 V/50 Hz Rated current (max.) 14.0 Starting current Start-up current (with stalled armature) 44.0 Fuse protection 3 x 16 Z Fan protection 6.3 A H slow Protection IP 21 IP 24 Control circuit rated voltage...

  • Page 202: Appendix Order To Commission The Vitocal 300-A

    Appendix Order to commission the Vitocal 300-A 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 203: Declaration Of Conformity

    A The product characteristics determined as system values for the product Vitocal 300-A (see specification table) 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 204: Keyword Index

    Keyword index Keyword index Control parameters 106, 195 ... . . Appliance fuse protection Control unit 17, 18, 68 ... . .
  • Page 205 Keyword index Keyword index (cont.) Fault message ..........
  • Page 206 Keyword index Keyword index (cont.) Inspection Note ........
  • Page 207 Keyword index Keyword index (cont.) System version 1 ......Reduced room temperature System version 2 ..
  • Page 208 Applicability Applicable for heat pumps: Air/water heat pump Vitocal 300-A, type AWC-I, AW-O, 400 V Type AWC-I from serial no.: 7262 728 8 01000 ... Type AW-O from serial no.: 7262 730 8 01000 ... Viessmann Werke GmbH&Co KG Viessmann Limited...

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