Page 1 VIESMANN Installation and service instructions for contractors Vitocal 350-A Type AWH-I, AWH-O Air/water heat pump with electric drive, 400 V~ For applicability, see the last page VITOCAL 350-A Please keep safe. 5414 828 GB 9/2009...
Page 2: Safety Instructions
Replace faulty components only with original Viessmann spare Regulations parts. Observe the following when working on this system ■ all legal instructions regarding the pre- vention of accidents, ■...
Page 3 Installing non-authorised components and non-approved modifications or conversions can compromise safety and may invalidate our warranty. For replacements, use only orig- inal spare parts supplied or approved by Viessmann.
Page 4: Table Of Contents
Index Index Installation instructions Preparing for installation Product information....................General information - electrical connection............Internal heat pump, type AWH-I................External heat pump type AWH-O................. 17 Overview of possible system schemes..............30 Function description for the system examples............. 30 System example 1....................34 System example 2....................
Page 5 Index Index Swimming pool..................... 170 Cascade....................... 170 Number of lag heat pumps................... 171 Output of lag heat pumps..................172 External extension....................172 External operating mode changeover heating circuits......... 173 Operating mode for external operating mode changeover........174 External operating mode changeover duration............ 174 External demand/mixer "OPEN"................
Page 6 Index Index Control settings, hydraulics Heat pump for drying buildings................191 Screed programme....................191 Set flow temperature in case of external demand..........193 Operation with three-way diverter valve............... 194 Control settings, heating water buffer cylinder Heating water buffer cylinder................195 Switching times, heating water buffer cylinder.............
Page 7 Index Index (cont.) Commissioning/service reports Hydraulic parameters report................. 241 Control parameters report..................241 Specification....................... 245 Appendix Heat pump commissioning order................249 Certificates Declaration of conformity..................250 Keyword index....................251...
Page 8: Product Information
Preparing for installation Product information Vitocal 350-A, type AWH-I, AWH-O Air/water heat pump without integral circulation pump (secondary pump) and without three-way diverter valve. A secondary pump assembly (secondary pump and circu- lation pump for cylinder heating) is available as an accessory.
Page 9 Preparing for installation Internal heat pump, type AWH-I (cont.) Never tilt the heat pump more than 45° during handling and installation. Requirements of the installation room Please note ■ Total weight: Incorrect ambient conditions can lead to system damage and can AWH-I 110 287 kg put the safe operation at risk.
Page 10 Preparing for installation Internal heat pump, type AWH-I (cont.) Installation Min. clearances and dimensions for installation against the wall ≥ 3 ≥ 2 ≤ 4 Discharge side on the left (delivered condition); hydraulic connections on the right (on site) A Wall outlet/duct part made of EPP D Heat pump (expanded polypropylene) E Connection on the discharge side...
Page 11 Preparing for installation Internal heat pump, type AWH-I (cont.) Dimensions Type AWH-I 1020 1180 1148 Minimum clearances and shell dimensions for installation in a corner Discharge side on the left (delivered condition); hydraulic connections on the right (on site) Wall outlet OKFFB Top edge, finished floor...
Page 12 Preparing for installation Internal heat pump, type AWH-I (cont.) Shell dimensions Type AWH-I 1020 1180 Information regarding shell dimen- sion"d" In unfinished buildings, please note that the thickness of the final coating/render must be added to the wall clearance "d".
Page 13 Preparing for installation Internal heat pump, type AWH-I (cont.) Discharge side on the left (delivered condition); hydraulic connections on the right (on site) A External rendering B Wall...
Page 14 Preparing for installation Internal heat pump, type AWH-I (cont.) C Duct part made of EPP (can be trim- D Compression sealing strip and med to the required size from the acrylic airtight seam (all-round) outside. Observe thickness of ren- E PU foam (all-round) der) F Plaster finish/wall coating Dimensions...
Page 15 Preparing for installation Internal heat pump, type AWH-I (cont.) Connections Note Hydraulic pipes, cables and condensate drain can be routed out of the heat pump to the left or right. A Cable entries C Condensate drain B Heating water return/DHW cylinder D Heating water flow/DHW cylinder return (see page 64) flow (see page 64)
Page 16 Preparing for installation Internal heat pump, type AWH-I (cont.) Dimensions Type AWH-I 1030 1200 Cables (for installation see from page 68) A Heat pump control unit C Power cables for further compo- Wall outlet for cables: central, nents and functions: directly below the heat pump control ■...
Page 17: External Heat Pump Type Awh-O
Preparing for installation Internal heat pump, type AWH-I (cont.) E Power cable for compressor/fan Required cable lengths: (400 V/50 Hz; 3/N/PE) ■ For the heat pump control unit from the wall outlet: Recommended cable: 5 x 2.5 mm 0.7 m F Power cable for instantaneous heat- ■...
Page 18 Preparing for installation External heat pump type AWH-O (cont.) Requirements ■ Provide a manual draining facility for In heat pump systems where a power the heating flow and return lines in the failure would not be detected (holiday area at risk from frost (see page 26). home), operate the heating circuit with If the heat pump control unit and heat- suitable antifreeze or drain the circuit...
Page 19 Preparing for installation External heat pump type AWH-O (cont.) Installation Minimum clearances 1500 1500 Foundations Position the heat pump horizontally on a ■ Provide an adequately sized recess permanently solid surface. We recom- (see diagram below) in the founda- mend laying concrete foundations as tions to permit the lines (heating water shown in the following diagrams.
Page 20 Preparing for installation External heat pump type AWH-O (cont.) Where the ground is able to absorb Technical guide water, the condensate can be soaked away down to a frost-free depth into a gravel bed. Weight (with silencer hoods) AWH-O 110 325 kg AWH-O 114 335 kg...
Page 21 Preparing for installation External heat pump type AWH-O (cont.) Foundation dimensions AWH-O 110: 1080 AWH-O 114: 1230 AWH-O 120: 1400 Plan view of the foundations A Installation area of the heat pump on concrete foundations...
Page 22 Preparing for installation External heat pump type AWH-O (cont.) B Concrete foundations, consisting of: E Recess in the foundations to route ■ Concrete plate C25/30, the heating water flow and return, BSt 500 S and M condensate drain, connecting ■ Reinforcement with all-round wire cables (LV and control cables) and mesh made of Q 257 A power cable to the control panel...
Page 23 Preparing for installation External heat pump type AWH-O (cont.) Connection dimensions, hydraulic connection kit in the foundations A Concrete foundations according to C Hydraulic connection set (heating local requirements and in accord- water flow and return) ance with the standard rules of building engineering B Frost protection (compacted crushed stone);...
Page 24 Preparing for installation External heat pump type AWH-O (cont.) Note Before laying the concrete foundations, trim the hydraulic connection pipes (heating water flow and return), install the connection fittings and provide frost protection.
Page 25 Preparing for installation External heat pump type AWH-O (cont.) Connections Side view, shown without silencer hood. Note Cable entries are cut into the sealing mat in the floor panel on site (see page 72).
Page 26 Preparing for installation External heat pump type AWH-O (cont.) A Condensate drain Dimensions B DHW cylinder flow/heating water Type flow (for installation see page 65) AWH- C DHW cylinder return/heating water return (for installation see 1380 page 65) 1530 D Silencer hoods (for installation see 1700 page 60) Cables (for installation see from page 68) and hydraulic pipes...
Page 27 Preparing for installation External heat pump type AWH-O (cont.) A Heat pump control unit H Connecting cable with plug for con- Wall outlet for cables: central, trol module/instantaneous heating directly below the heat pump control water heater, approx. 1.6 m long unit K Instantaneous heating water heater B Power cable for heat pump control...
Page 28 Preparing for installation External heat pump type AWH-O (cont.) Underground cable routing ≤ 2 ≥ 1 D Two connecting cables inside KG W Route connecting cable (LV cable conduit DN 100 (on site), fully wired < 42 V) D and power cable to con- (5, 15 or 30 m): trol panel R as far apart as possi- ■...
Page 29 Preparing for installation External heat pump type AWH-O (cont.) Heating water connection (hydraulic Observe the regulations imposed by connection lines P) your local power supply utility. Ensure on-site wall duct U is moisture Use the hydraulic connection set (acces- and water-proof. sory), pre-assembled in different Cable length required in the heat pump lengths.
Page 30: Overview Of Possible System Schemes
Preparing for installation Overview of possible system schemes The following table provides an overview of all possible system schemes. System schemes 2, 6 and 10 are explained using three system examples (from page 39). System diagram (ID 7000) Heating cir- cuit –...
Page 31 Preparing for installation Function description for the system examples (cont.) Heating circuit Minimum flow rate Heating water buffer cylinder oper- ated in parallel Heat pumps require a minimum heating water flow rate (see specification on Applications for a heating water buffer page 246), which must be maintained.
Page 32 Preparing for installation Function description for the system examples (cont.) DHW heating In the delivered condition, DHW heating If one of the following criteria is met, the by the heat pump takes priority over the booster heaters begin cylinder heating: heating circuits.
Page 33 Preparing for installation Function description for the system examples (cont.) If enabled via parameter "Max. e heat- To limit the total power consumption, the ing stage", the heat pump control unit heat pump control unit stops the instan- starts stages 1, 2 or 3 of the instantane- taneous heating water heater for a few ous heating water heater, subject to heat seconds directly before the compressor...
Page 34: System Example 1
30 and 169) ■ The hydraulic diagram shows a ■ 1 heating circuit without mixer (A1) Vitocal 350-A, type AWH-O. ■ 1 heating circuit with mixer (M2) ■ With type AWH-I, an instantaneous ■ DHW heating with DHW cylinder heating water heater (accessory) is ■...
Page 35 Preparing for installation System example 1 (cont.) Required equipment Pos. Description Heat pump Instantaneous heating water heater (accessory, with control module) Heat pump control unit (with connecting cable to the heat pump) Circulation pump for cylinder heating (accessory) Secondary pump (accessory) Safety assembly (accessory) Expansion vessel (accessory) Outside temperature sensor...
Page 36 Preparing for installation System example 1 (cont.) Pos. Description Flow temperature sensor - secondary circuit (for type AWH-O, install inside the building in the secondary circuit flow) DHW heating with DHW cylinder Vitocell 100-V DHW cylinder, type CVW Cylinder temperature sensor DHW circulation pump ("Wtimer DHW Circ.") DHW heating with a solar thermal system Solar-Divicon...
Page 37 Preparing for installation System example 1 (cont.) 100 W X7.9 X1. ? X2.N 130 W X7.10 X1. ? X2.N 50 W X7.11 X1. ? X2.N X8.9 Open X2.N X8.10 Closed sÖ uR 100 W X8.11 UP M2 X2.N 130 W X8.7 UP 6 X1.
Page 38 Preparing for installation System example 1 (cont.) F13/Pt 500 X1.9 X2.9 F12/Ni 500 X1.10 VTS M2 X2.10 F6/Pt 500 X1.14 STS eQ X2.14 F0/Ni 500 X1.16 X2.16 F8/Pt 500 X1.20 X2.20 F4/Pt 500 X1.22 X2.22 X1.25 X2.25 Pt 500 Pt 500 STB rZ 230 V/50 Hz...
Page 39: System Example 2
30 and 169) ■ The hydraulic diagram shows a ■ 1 heating circuit without mixer (A1) Vitocal 350-A, type AWH-O. ■ 2 heating circuits with mixer ■ With type AWH-I, an instantaneous ■ External heat source for heating and heating water heater (accessory) is installed in the heat pump.
Page 40 Preparing for installation System example 2 (cont.)
Page 41 Preparing for installation System example 2 (cont.) Required equipment Pos. Description Heat source Heat pump Instantaneous heating water heater (accessory, with control module) Heat pump control unit (with connecting cable to the heat pump) Circulation pump for cylinder heating (accessory) Secondary pump (accessory) Safety assembly (accessory) Expansion vessel (accessory)
Page 42 Preparing for installation System example 2 (cont.) Pos. Description Heating water buffer cylinder Heating water buffer cylinder Buffer cylinder temperature sensor Heating circuit without mixer (A1) Radiator heating circuit Vitotrol remote control Overflow valve Heating circuit pump Heating circuit with mixer (M2) Underfloor heating circuit with directly controlled mixer motor Vitotrol 200 remote control Overflow valve...
Page 43 Preparing for installation System example 2 (cont.) X8.9 OPEN X2.N X8.10 CLOSED sÖ 100 W X8.11 UP M2 X2.N X7.9 X2.N X7.1 X3.1 High limit safety cut-ou X7.2 X2.N 130 W X7.10 X2.N X7.7 OPEN X2.N X7.8 CLOSED X3.18 ≤ 16A X2.1 230 V / 50 Hz X1.1...
Page 44 Preparing for installation System example 2 (cont.) 50 W X7.11 ZP eW X2.N STB wT 130 W X8.7 X2.N X7.5 X8.8 X2.N 100 W X8.13 X2.N 130 W X8.12 X2.N A Control module for instantaneous heating water heater...
Page 45 Preparing for installation System example 2 (cont.) X1.25 X2.25 230 V/50 Hz fÖ sÖ Pt 500 VTS M3 230 V/50 Hz fÖ aVG aVD 400 V/ 50 Hz gÖ...
Page 46 Preparing for installation System example 2 (cont.) F20/Pt 500 X1.4 KTS wU X2.4 F13/Pt 500 X1.9 X2.9 F12/Ni 500 X1.10 VTS M2 X2.10 F6/Pt 500 X1.14 STS eQ X2.14 F0/Ni 500 X1.16 X2.16 F8/Pt 500 X1.20 X2.20 F4/Pt 500 X1.22 X2.22 16 A 16 A...
Page 47: Dhw Heating
Preparing for installation System example 2 (cont.) Parameter Setting "Electric heater" ■ "Inst.htg.water heat" "Yes" "Heating circ. A1" ■ "Remote control" "Yes" "Heating circuit M2" ■ "Remote control" "Yes" "Heating circ. M3" ■ "Remote control" "Yes" DHW heating AWH-I 110, AWH-O 110 only: DHW cylinder with internal indirect coil Heat pump interface WW DHW...
Page 48 Preparing for installation DHW heating (cont.) Required Equipment Pos. Description DHW cylinder Immersion heater EHE (accessory; provide wiring on site. Only use as an alternative to the instantaneous heating water heater or external heat source for DHW reheating) DHW circulation pump (optional) Cylinder temperature sensor, top Cylinder temperature sensor, bottom (optional) Circulation pump for cylinder heating (for type AWH-O accessory;...
Page 49 Preparing for installation DHW heating (cont.) Required parameters (code to be entered by "Contractor": 5243) Parameter Setting "System definition" ■ "System scheme" "0", "2", "4," "6", "8", "10" ■ DHW circulation pump Setting switching times ("Wtimer DHW Circ.") "DHW" ■ "Switching times DHW" Setting switching times ■...
Page 50 Preparing for installation DHW heating (cont.) Pos. Description Plate heat exchanger Flow limiter Motorised two-way valve, normally closed Cylinder primary pump x7.11 ZP 3 x2.N x8.12 UP qP x2.N L1 L2 L3 N x8.13 x2.N x7.10 UP 8 x2.N Pt 500 x1.14 x2.14 Pt 500...
Page 51 Preparing for installation DHW heating (cont.) Required parameters (code to be entered by "Contractor": 5243) Parameter Setting "System definition" ■ "System scheme" "0", "2", "4," "6", "8", "10" ■ DHW circulation pump Setting switching times ("Wtimer DHW Circ.") "DHW" ■ "Switching times DHW" Setting switching times ■...
Page 52: Removing The Transport Brackets
Installation sequence Removing the transport brackets Please note Transport brackets must be removed. Fitting the outer panels Installation using type AWH-I as an example:...
Page 53 Installation sequence Fitting the outer panels (cont.) Note Fit silencer hoods before the top panel. ■ Steps 4 and 5 are only required for Fitting the silencer hoods: see the fol- type AWH-I. lowing chapter. ■ For type AWH-O: Fitting the top panel: see step 12.
Page 54 Installation sequence Fitting the outer panels (cont.)
Page 55 Installation sequence Fitting the outer panels (cont.) Note on step 5: To ease installation, apply a soapy solu- Only for type AWH-I: tion to the edges of the side panel insu- Installation of side panels with air dis- lation. charge on the l.h. side (delivered condi- tion).
Page 56 Installation sequence Fitting the outer panels (cont.) Type AWH-I only, for side panel installation with air discharge on the r.h. side.
Page 57 Installation sequence Fitting the outer panels (cont.)
Page 58 Installation sequence Fitting the outer panels (cont.)
Page 59 Installation sequence Fitting the outer panels (cont.) Note For type AWH-O, fit silencer hoods before the top panel. Fitting the silencer hoods: see the fol- lowing chapter.
Page 60: Fitting The Silencer Hoods (Only Type Awh-O)
Installation sequence Fitting the silencer hoods (only type AWH-O)
Page 61: Installing The Heat Pump
Installation sequence Installing the heat pump Connecting the primary circuit (only type AWH-I) See also installation information from 1. Centre the wall outlets in the wall cut- page 10. outs and plaster them in correctly. Note 2. Finish off the external part of the ven- Make the ventilation and extract air aper- tilation and extract air ducts with tures burglar-proof.
Page 62 Installation sequence Installing the heat pump (cont.) Type AWH-I:...
Page 63 Installation sequence Installing the heat pump (cont.) Type AWH-O:...
Page 64: Connecting The Heating Circuits And Condensate Drain
Installation sequence Connecting the heating circuits and condensate drain Note ■ In underfloor heating circuits, integrate a temperature limiter on site for limiting the maximum temperature of under- floor heating systems. ■ Integrate an overflow valve in every heating circuit (excl. single pipe heat- ing circuits) to safeguard the minimum flow rate (see specification on page 246).
Page 65 Installation sequence Connecting the heating circuits and condensate… (cont.) Note 3. Route condensate drain B through Hydraulic connections can be made the centre aperture out of the heat on the r.h. or l.h. side. pump. Route the condensate hose with siphon (water level at least 60 mm) into an on-site drain connection.
Page 66 Installation sequence Connecting the heating circuits and condensate… (cont.) 5. Join hydraulic pipes A and C to the 3. Push heating water flow/DHW cylin- der flow A onto connection and pipes in the foundation duct (see secure with both plug-in connector page 23).
Page 67 Installation sequence Connecting the heating circuits and condensate… (cont.) 1. Fit pipe section with sensor well A. 3. Connect sensor lead plug D and lead to the heat pump control unit. 2. Secure flow temperature sensor for (Lead with plug, 2.0 m long; extend secondary circuit C with spring clip on site if required).
Page 68: Electrical Connections In The Control Panel
Installation sequence Electrical connections in the control panel Opening the control panel A Control panel with electric compo- B Internal earth conductor nents 1. Undo 2 screws at the bottom of the Note control panel cover. In the delivered condition, the coding card is affixed inside the control panel.
Page 69 Installation sequence Electrical connections in the control panel (cont.) Overview of electrical connections in the control panel A Fan fuse L Mains terminals (400 V~) for com- B Phase monitor pressor and fan with contact shield and power-OFF seal if required C Compressor contactor M Full wave soft starter D Distributor PCB...
Page 70 Installation sequence Electrical connections in the control panel (cont.) Routing cables to the control panel Danger Damaged cable insulation can cause injury and damage to the appliance. Route cables so that they cannot touch very hot, vibrating or sharp- edged components.
Page 71 Installation sequence Electrical connections in the control panel (cont.) Type AWH-I A One cable entry each for LV and B Mains terminals 230 V~/400 V~ cables...
Page 72 Installation sequence Electrical connections in the control panel (cont.) C Power cable 400 V~ with cable fit- E Cable bracket (cables secured with ting cable ties) D Connecting cables with plugs: LV F Retaining clip for cables cable (< 42 V) and control cable (230 V~) Type AWH-O A Sealing mat (for cable entry from...
Page 73 Installation sequence Electrical connections in the control panel (cont.) 1. Type AWH-I: 4. Push the connecting cable (LV cable Route the 230 V~ cables through one < 42 V and control cable 230 V~) cable entry, and the LV cable through from the heat pump control unit into the other cable entry in the l.h.
Page 74 Installation sequence Electrical connections in the control panel (cont.) Attaching the connecting cables from the control unit in the con- trol panel X14.6 Plug-in strip for connecting cable Plug-in strip for connecting cable (control cable 230 V~) – heat pump (control cable 230 V~) –...
Page 75: Electrical Connections In The Heat Pump Control Unit
Installation sequence Electrical connections in the control panel (cont.) Plug-in strip for connecting cable X14 Terminal strip with terminal X14.6 (LV cable < 42 V) – heat pump con- for PE connection of connecting trol unit – control panel cable (control cable 230 V~) Electrical connections in the heat pump control unit Note Make all external electrical connections...
Page 76 Installation sequence Electrical connections in the heat pump control… (cont.) Overview of the PCBs X7 X5 A PCB 1 (cross connect PCB) D Slot for coding card on PCB 2 B Fuse F1 for the heat pump control E PCB 3 (sensor PCB) unit on PCB 1 F Slot for LON communication module C PCB 2 (main PCB)
Page 77 Installation sequence Electrical connections in the heat pump control… (cont.) Terminal strips on PCB 1 A (cross con- X10 Internal connections nect PCB): X11 Terminals Terminals for earth conductor X15 Programming unit connection X16 Internal connections "?" Terminals for neutral conductor Terminal strips on PCB 3 E (sensor "N"...
Page 78 Installation sequence Electrical connections in the heat pump control… (cont.) Installing the mounting bracket and back part of heat pump con- trol unit...
Page 79 Installation sequence Electrical connections in the heat pump control… (cont.) Fitting front part of heat pump control unit X3.16 1716 X2.3 X2.2 X3.17 A PCB 1 (cross connect PCB) D Back view of ON/OFF switch B Blue cores E PCB 2 (main PCB) C Black cores F Back view of programming unit...
Page 80 Installation sequence Electrical connections in the heat pump control… (cont.) Opening the heat pump control unit...
Page 81 Installation sequence Electrical connections in the heat pump control… (cont.) Inserting cables and applying strain relief A Cables with moulded strain relief B On-site cables/leads...
Page 82 Installation sequence Electrical connections in the heat pump control… (cont.) Adapting the heat pump control unit The secondary pump and/or the instan- Subject to system design, remove one or taneous heating water heater (acces- more of the 4 red cores according to the sory) can be installed inside (type AWH- following diagram.
Page 83 Installation sequence Electrical connections in the heat pump control… (cont.) 1X6 PCB 1 (cross connect PCB), termi- 4 red cores: nal strip X6 A 2X8.7 — 1X6.6 2X7 PCB 2 (main PCB), terminal strip B 2X8.8 — 1X6.2 C 2X7.5 — 1X6.1 D 2X7.10 —...
Page 84 Installation sequence Electrical connections in the heat pump control… (cont.) Type AWH-O Red cores to be removed (see illustra- tion on page 83) A 2X8.7 — 1X6.6 B 2X8.8 — 1X6.2 C 2X7.5 — 1X6.1 D 2X7.10 — 1X6.4 Electrical connections of the compo- nents: The following components are connec- E Instantaneous heating water heater...
Page 85 Installation sequence Electrical connections in the heat pump control… (cont.) Type AWH-I Red cores to be removed (see illustra- tion on page 83) D 2X7.10 — 1X6.4 Electrical connections of the compo- nents: The following components are connec- ted in the heat pump control unit (see from page 205): ■...
Page 86 Installation sequence Electrical connections in the heat pump control… (cont.) Plug in coding card Only use the coding card supplied with the heat pump (see page 68)
Page 87 Installation sequence Electrical connections in the heat pump control… (cont.) A Coding card B PCB 2 (main PCB)
Page 88: Control Unit
Installation sequence Electrical connections in the heat pump control… (cont.) Attaching the connecting cables from the control panel in the control unit A PCB 1 (cross connect PCB) D Connecting cable (control cable 230 V~) – heat pump control unit – B PCB 3 (sensor PCB) control panel C Connecting cable (LV cable <...
Page 89 Installation sequence Electrical connections in the heat pump control… (cont.) Inserting the LON communication module (accessory) A LON communication module B PCB 3 (sensor PCB) Sensors Note For PCB locations and terminal markings, see from page 76.
Page 90 Installation sequence Electrical connections in the heat pump control… (cont.) Sensor / KM BUS Connec- tion KM BUS 3X1.25 KM BUS 3X2.25 Buffer cylinder temperature sensor 3X1.22 3X2.22 Outside temperature sensor 3X1.16 3X2.16 Cylinder temperature sensor, top 3X1.14 3X2.14 Cylinder temperature sensor, bottom 3X1.13 3X2.13 Flow temperature sensor, heating circuit with...
Page 91 Installation sequence Electrical connections in the heat pump control… (cont.) Appliance Connection Required parameters: Parameter Ó setting Heating circuit pump for heating 2X7.9 "System definition" circuit without mixer A1 1X1.? ■ "System diagram" Ó with (max. 100 W) 1X2.N heating circuit A1 (see page 44) Secondary pump 2X8.7...
Page 92 Installation sequence Electrical connections in the heat pump control… (cont.) Connecting the temperature limiter for limiting the maximum temperature of underfloor heating systems Connection with temperature limiter, Connection with temperature limiter general (part no. 7151 728, 7151 729) 1X2.N 1X2.N 1X1.
Page 93 Installation sequence Electrical connections in the heat pump control… (cont.) Connection with temperature limiter (part no. 7151 728, 7151 729) to exten- sion kit for heating circuit with mixer sÖ sÖ A Plug sÖ for extension kit B Temperature limiter C Heating circuit pump M3 Further components Note...
Page 94 Installation sequence Electrical connections in the heat pump control… (cont.) Appliance Connection Required parameters: Parameter Ó setting Directly controlled mixer motor, 2X8.9VOPEN "System definition" heating circuit M2, without KM ■ "System diagram" Ó with 1X1.? BUS (page 44) heating circuit M2 1X2.N 2X8.10vCLOS (see page 44)
Page 95 Connection Installation instructions Installation instructions Control module for instantaneous Instantaneous heating water heating water heater (acces- heater for the Vitocal 350-A, type sory). AWH-I, AWH-O (accessory). Required parameters: Parameter Ó setting "Electric heater" ■ "Inst. heating water heater" Ó "Yes"...
Page 96 Installation sequence Electrical connections in the heat pump control… (cont.) For further information, see from page 104. Immersion heater EHE Connection Installation instructions, immersion heater EHE Appliance Connection Required parameters: Parameter Ó setting Immersion heater EHE 2X8.13 "DHW" 1X1.? ■ "Booster heater" Ó "Yes" 1X2.N (see page 48) Note...
Page 97 Installation sequence Electrical connections in the heat pump control… (cont.) C Connection at the external heat 1X3.1 source on the terminals for external demand 2X7.1 D High limit safety cut-out (this is set to 70 °C) as heat pump protection K1 Relay;...
Page 98 Installation sequence Electrical connections in the heat pump control… (cont.) Installation instructions "External extension H1" Note If swimming pool heating is connected to "External extension H1", no hook-up (e.g. operating mode changeover) can be connected to "External extension H1". External demand, external mixer "OPEN", operating mode changeover 1X3.13 1X3.12 A Terminals on PCB 1...
Page 99 Installation sequence Electrical connections in the heat pump control… (cont.) External blocking, external mixer "CLOSED" 1X3.2 1X3.14 A Terminals on PCB 1 B Zero volt N/O contact Breaking capacity 230 V~; 0.1 A Required parameters (code to be entered by "Contractor": 5243) Function Parameter Ó...
Page 100 Installation sequence Electrical connections in the heat pump control… (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. extension H1" with KM BUS (cores interchangeable).
Page 101 Installation sequence Electrical connections in the heat pump control… (cont.) Required parameters (code to be entered by "Contractor": 5243) Parameter Ó setting "System definition" ■ "Ext. extension" Ó "Yes" ■ "Swimming pool" Ó "Yes" Cascade control via KM BUS Make connections to "Ext. extension H1"...
Page 102 Installation sequence Electrical connections in the heat pump control… (cont.) 3X2.25 3X1.25 1X3.10 1X3.11 230 V 2X7.13 fÖ 2X7.12 230 V 2X7.13 2X7.12 230 V sÖ 2X7.13 2X7.12 A Heat pump 1 (lead appliance) F Zero volt contact "Ext. demand" B KM BUS G Heat pump 3 (lag appliance) C External extension H1...
Page 103 Installation sequence Electrical connections in the heat pump control… (cont.) L Input for central fault message facility, lag appliance Open contact 1X3.10/1X3.11 trig- gers a message (see central fault message, page 99). Required parameters (code to be entered by "Contractor": 5243) Appliance Parameter Ó...
Page 104: Power Supply
Installation sequence Power supply Danger Isolator for non-earthed conductors Incorrectly executed electrical ■ The main isolator (if installed) must installations can lead to injury simultaneously isolate all non-earthed from electrical current and result conductors from the mains with a min- in equipment damage.
Page 105 Installation sequence Power supply (cont.) General information regarding the power supply Information regarding the compres- Information regarding the heat pump sor power supply control unit power supply ■ ■ Protect the power supply to the heat Please note pump control unit with 16 A max. An incorrect phase sequence ■...
Page 106 Installation sequence Power supply (cont.) Information regarding the power sup- ply utility ■ In negotiations with your power supply utility, different supply tariffs for the main power circuits may be offered. ■ The heat pump control unit/elec- tronics supply must be made with- out blocking by the power supply util- ity;...
Page 107 Installation sequence Power supply (cont.) 230 V~ 1/N/PE 400 V~ 3/N/PE 400 V~ 3/N/PE A Power supply to heat pump control unit Recommended cable: 3 x 1.5 mm B Power supply to compressor/fan Recommended cable: 5 x 2.5 mm C Power supply to instantaneous heating water heater (accessory;...
Page 108 Installation sequence Power supply (cont.) Heat pump control unit power supply (230 V~) Note This supply must never be blocked. 1X3.18 1/N/PE 1X2.1 230 V, 50 Hz ■ Max. fuse rating 16 A 1X1.1 ■ Standard tariff (no optional low tariff with power-OFF) A Mains terminals inside the heat ■...
Page 109 Installation sequence Power supply (cont.) Compressor power supply (400 V~), sealing low tariff connection for compressor 1. Remove contact shield C. 2. Route 400 V~ power cable through cable entry B and apply strain relief.
Page 110 Installation sequence Power supply (cont.) 3. Connect cores to power supply ter- minals A in the control panel. 16 A 3 / N / PE 4. Fit contact shield C. 16 A 400 V, 50 Hz 16 A 5. If seal required, guide the seal wire through holes D in both studs.
Page 111 Installation sequence Power supply (cont.) 1X3.7 1X3.6 ≈ Shown excluding fuses and RCD A Heat pump control unit E Ripple control receiver (contact B Instantaneous heating water heater open: power-OFF enabled) F Backup fuse ripple control receiver (accessory) C Compressor G TNC system feed D High tariff meter H Low tariff meter...
Page 112: Phase Monitor
Installation sequence Power supply (cont.) 1X3.7 1X3.6 ≈ Shown excluding fuses and RCD A Heat pump control unit E Heating system main isolator B Instantaneous heating water heater F High tariff meter (accessory) G Ripple control receiver (contact C Compressor open: power-OFF enabled) D Power supply to heat pump control H Low tariff meter...
Page 113 Installation sequence Power supply (cont.) The phase monitor switches off (switch- Remove the cause if the relay has ing contact opens) if these tolerances responded. The relay does not need to are exceeded. be reset. The phase monitor automatically re-ena- bles the power supply if the values return to within the specified tolerance range.
Page 114: Closing The Heat Pump
Installation sequence Closing the heat pump Closing the control panel A Holes for type 120 C Holes for type 110 B Holes for type 114...
Page 115 Installation sequence Closing the heat pump (cont.) Fitting the front panel...
Page 116: 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. Opening the heat pump..........117 • 2. Writing reports..............118 •...
Page 117: Further Details Regarding The Individual Steps
Commissioning, inspection, maintenance Further details regarding the individual steps Opening the heat pump Danger 1. Remove the front panels in reverse Contact with 'live' components order; see page 115. can lead to severe injury from electric current. 2. If required, the control panel can be Never touch the connections pivoted to the side (see page 118).
Page 118 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Pivoting control panel to the side Writing reports Enter measurements taken during com- missioning (described in the following) into the reports from page 241 onwards.
Page 119 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 leaks.
Page 120 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 01. Open any on-site non-return valves installed. 02. Check the pre-charge pressure of the expansion vessel (see page 120). 03. Thoroughly flush the on-site pipe- Set the operating mode selector to work.
Page 121 10 min. pressor 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 nec- essary, consult the Technical Service department at Viessmann).
Page 122 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Setting the control parameters 1. Enable the "Contractor" level. For 3. Acknowledge all messages (see information regarding the "Contrac- page 132). tor" level and control parameters, see chapter "Control settings" from Note page 168.
Page 123 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Function Explanation Access rights Log on as "Contractor" by entering code "5243" (see page 168) Note The "Contractor" level remains active either until key "Standard display" F is pressed or if no input is detected for 30 min.
Page 124 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 with ON/OFF switch Incorrect operation at the "Con- tractor"...
Page 125 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 2. Press key 6 E whilst the progress 9. y/x for the required temper- bar is filling from left to right. ature sensor (e.g. The commissioning assistant starts. "Outside", "Evapora- tor", etc.).
Page 126 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) 15. "ON" to carry out the relay 18. "BACK" for "Mixer" test for the selected function or connected 19. y/x for the required mixer components. (e.g. "Heating circ. 2", "Ext. heat source", Note etc.).
Page 127 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) System characteristics Heating circuit 2 Venting Heating circuit pump 2 or 3 is Heating circuit 3 started. Open/close mixer every 5 min. DHW (DHW cylinder) Venting Secondary pump and cylinder primary pump are started.
Page 128 Parameter setting: "LON module installed" set to "Yes" Subscriber no. 1 Subscriber no. 99 Parameter setting: "Subscriber number" set to "1" Viessmann system number — Parameter setting: "System number" set to "1" Control unit is fault manager Device is fault manager Parameter setting: "Fault manager"...
Page 129 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Updating LON subscriber list 5. "RESET" The subscriber list will be deleted and recreated Preconditions: (after approx. 2 min). ■ All subscribers must be connected ■ The heat pump control unit must be 6.
Page 130 Commissioning, inspection, maintenance Further details regarding the individual steps (cont.) Carrying out subscriber check In conjunction with LON. Communication with the system devices connected to the fault manager is tested with a subscriber check. Preconditions: 6. "WINK" Check is enabled. ■...
Page 131: Control Unit Diagnostics
Troubleshooting Control unit diagnostics Scanning messages D ° § 51 °C 95 °C 22 °C 23 °C 21 °C B1 KM BUS EEV THU 27.03.08 11:55 TYPE VX.XX A Fault display C Message symbol B Message Messages are displayed as text and by Warning ""...
Page 132 Troubleshooting Control unit diagnostics (cont.) Displaying and acknowledging mes- 2. "Information". sages 3. "Fault messages". ■ The message will be redisplayed at 07:00 h the following day if the fault 4. "TIME" for the times at which has not been rectified. the messages occur- ■...
Page 133 Troubleshooting Control unit diagnostics (cont.) Message overview All messages are identified by a two-digit code. Message System characteristics Cause Measures 01 System fault Control unit processor Replace programming faulty unit 02 Std after data err Delivered condition set Reconfigure system. after recognition of data fault 03 Configuration fault...
Page 134 Troubleshooting Control unit diagnostics (cont.) Message System characteristics Cause Measures «20 Flow sens. secondary Operation with tempera- Short circuit, secondary Check resistance (Pt 500) ture value of return tem- circuit flow temperature at connections 3X1.20 perature sensor in sec- sensor and 3X2.20;...
Page 135 Troubleshooting Control unit diagnostics (cont.) Message System characteristics Cause Measures «30 Flow sensor primary The heat pump will not Short circuit, air inlet tem- Check resistance (Pt 500) start perature sensor at connections 3X1.24 and 3X2.24; replace sen- sor if required. «31 Primary return sens.
Page 136 Troubleshooting Control unit diagnostics (cont.) Message System characteristics Cause Measures «3A Evaporator sensor Break - evaporator tem- Check pressure drop perature sensor value (type Pt 500) at con- nections 3X1.5 and 3X2.5; replace sensor if required. «3B Hot gas Break - hot gas tempera- Check pressure drop ture sensor value (type Pt 500) at con-...
Page 137 Troubleshooting Control unit diagnostics (cont.) Message System characteristics Cause Measures «4B Flow sensor system Break, system flow tem- Check resistance (Pt 500) perature sensor (down- at connections 3X1.9 and stream of heating water 3X2.9; replace sensor if buffer cylinder) required. «50 DHW sensor top Operation with tempera- Short circuit, top cylinder...
Page 138 Troubleshooting Control unit diagnostics (cont.) Message System characteristics Cause Measures «5A DHW sensor bottom Operation with tempera- Break, bottom cylinder Check resistance (Pt 500) ture value of the upper temperature sensor at connections 3X1.13 cylinder temperature and 3X2.13; replace sen- sensor.
Page 139 Troubleshooting Control unit diagnostics (cont.) Message System characteristics Cause Measures «70 Room sensor HC1 ■ No frost protection Short circuit, room tem- Check remote control mode via room temper- perature sensor heating sensor and replace if ature sensor circuit A1 required (see Vitotrol ■...
Page 140 Troubleshooting Control unit diagnostics (cont.) Message System characteristics Cause Measures «7A Room sensor HC3 ■ No frost protection Break, room temperature Check remote control mode via room temper- sensor heating cir- sensor and replace if ature sensor cuit M3 required (see Vitotrol ■...
Page 141 Troubleshooting Control unit diagnostics (cont.) Message System characteristics Cause Measures «A7 Solar circuit No flow in solar circuit Check solar circuit pump (solar circuit pump stop- and replace if required ped) (see Vitosolic installation and service instructions). «A8 Pump heat. circuit 1 No flow in heating circuit Test voltage at connection A1 (circuit pump stop-...
Page 142 Troubleshooting Control unit diagnostics (cont.) Message System characteristics Cause Measures ■ Check power supply, power cable and plug to the instantaneous heat- ing water heater ■ Test instantaneous heating water heater control signal at con- nections 2X7.5 (stage 2) and 2X8.8 (stage 1); check high limit safety cut-out and reset if required;...
Page 143 Troubleshooting Control unit diagnostics (cont.) Message System characteristics Cause Measures «AF Cylinder primary pump ■ Circulation pump for ■ Circulation pump for cylinder heating (heat- cylinder heating: ing water side) faulty Test voltage at connec- ■ Circulation volume in tion 2X7.10 and check primary store system pump mechanically;...
Page 144 Troubleshooting Control unit diagnostics (cont.) Message System characteristics Cause Measures «B4 AD converter Internal fault ADC (ana- Check sensor connec- logue digital converter, tions F1, F5, F10, F15, reference), ribbon cable F19 and F22 on PCB 3. between sensor PCB Never connect any exter- and main PCB faulty, or nal components.
Page 145 Troubleshooting Control unit diagnostics (cont.) Message System characteristics Cause Measures «BE HC3 R/C KM BUS Communication error - Check remote control KM BUS remote control; connections and coding. heating circuit with mixer «BF Communication module LON communication Check connections and error;...
Page 146 Troubleshooting Control unit diagnostics (cont.) Message System characteristics Cause Measures «C9 Refrigerant circuit Refrigerant circuit fault: ■ Check flow and return Safety high pressure temperature sensors in switch has responded. primary and secondary Compressor motor pro- circuits. tection (thermal relay) ■...
Page 147 Troubleshooting Control unit diagnostics (cont.) Message System characteristics Cause Measures «CC Coding card Coding card cannot be ■ Check coding card and read replace if required. ■ Check PCB 2 (main PCB) and replace if required. ■ Check programming unit of heat pump con- trol unit and connecting cable;...
Page 148 Troubleshooting Control unit diagnostics (cont.) Message System characteristics Cause Measures «CF Communication module Communication error - Check LON communica- LON module in heat tion module and replace if pump control unit required. If required, replace in the following order: PCB 3, ribbon cables between PCB 3 and 2, PCB 2.
Page 149 Troubleshooting Control unit diagnostics (cont.) Message System characteristics Cause Measures D3 Low pressure Low pressure fault ■ Have heat pump tested ■ Heat pump faulty by a refrigeration engi- ■ Fan faulty or air ducts neer. blocked ■ Check fan and shut-off ■...
Page 150 Troubleshooting Control unit diagnostics (cont.) Message System characteristics Cause Measures ¸D4 Control high press High pressure fault ■ Vent heating circuit. ■ Air in heating circuit ■ Check system pres- ■ Secondary pump or sure. heating circuit pump ■ Check secondary pump stalled and heating circuit ■...
Page 151 Troubleshooting Control unit diagnostics (cont.) Heat pump module diagnosis The refrigerant circuit is controlled by the EEV controller, which communicates per- manently with the heat pump control unit via KM BUS. You can scan the following information in the heat pump module diagnosis: ■...
Page 152 Troubleshooting Control unit diagnostics (cont.) Diagnosis overview Diag. HP module Note [ - ] : 0100 4000 0101 ■ The information displayed in "Diag. Tsh, Tc [ °C ] : 3.0, 68.0 HP module" is independent of the pmop [ bara ] : fault codes in the heat pump control Ts, Tc [ °C ] :...
Page 153 Troubleshooting Control unit diagnostics (cont.) Display system of information and How to analyse the information index fault index and fault index 1. Check the display value for each posi- Four different messages are possible at tion individually. each position in the information index 2.
Page 154 Troubleshooting Control unit diagnostics (cont.) Position Code Explanation Enable refrigerant circuit control (EEV controller switches com- pressor on automatically when required) Enable vapour injection with EVI control circuit Cooling mode enabled Most recent status reported by the heat pump control unit to the EEV controller Digital scroll relay enabled EVI valve enabled Refrigerant circuit control of heat pump control unit enabled via...
Page 155 Troubleshooting Control unit diagnostics (cont.) Posi- Display Codes Explanation (Tab. I) tion (Tab. C) "0" — "0" EEV controller hardware version 01 "1" "0" EEV controller software version 02 "2" Fault code "Err" E Position Code Explanation Parts, fault messages result from a plausibility check of actual values LPG temperature sensor faulty EEV stepper motor faulty Low pressure sensor faulty...
Page 156 Troubleshooting Control unit diagnostics (cont.) Position Code Explanation Maximum operating pressure (MOP) was reached; control type (superheating/evaporation pressure control) in refrigerant cir- cuit was adjusted. Fault due to impermissible combination of refrigerant circuit conditions. A serious EEV controller fault has occurred, as the heat pump control unit only transfers permissible parameter combinations to the EEV controller.
Page 157 Troubleshooting Control unit diagnostics (cont.) Heat pump Note °C : 19.8 While the compressor is running, the °C : 11.3 control unit in this overview displays the °C : 22.2 current test values. After the compressor °C : 31.5 has shut down, the last values measured bara : during operation can be called up.
Page 158 Heating energy [kWh] per month transferred to the heating sys- LON communication module diagnosis This section is intended for contractors who are familiar with LON configuration, commissioning and fault analysis. All terms in LON technology are explained in detail in the Viessmann LON manual.
Page 159 Physical address of the neuron chip integrated in the LON mod- Domain Network domains, data is hexadecimal, last digit (set apart) speci- fies length of the domain designation used Allocated via "Binding tool" Preset in Viessmann control units to the value 07 and length...
Page 160 Troubleshooting Control unit diagnostics (cont.) Display Explanation For "Tool binding" (see "Net- For "Self binding" (see "Net- config", page 161) config", page 161) Subnet Subnet address Allocated via "Binding tool" Corresponds to the system num- ber, parameter "System num- ber" Node Address of network node Allocated via "Binding tool"...
Page 161 7243459 Netconfig >> BACK Display Explanation SN neuron Neuron chip - Viessmann part number SN foreign Communication coprocessor - Viessmann part number Netconfig Configuration status: 0 "Self binding": Logical linking during installation was carried out via integral installation program 1 "Tool binding": Logical linking during installation was carried out via external installation program ("Binding-...
Page 162 Troubleshooting Control unit diagnostics (cont.) Page 2: Network variables and status LON diagnosis LON1 05310002 LON1 00001001 Foreign 05130002 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ RTO: _ _ _ _ _ _ _ _ _ _ _ Rel : A040...
Page 163: Measures In Case The Room Temperature Is Constantly Too Low
Troubleshooting Control unit diagnostics (cont.) Display Explanation 20 nviPM1BlrState 21 nviPM1SupplyT 22 nviPM1BoCState 23 nviPM2BlrState 24 nviPM2SupplyT 25 nviPM2BoCState 26 nviPM3BlrState 27 nviPM3SupplyT 28 nviPM3BoCState 29 nviPM4BlrState 30 nviPM4SupplyT 31 nviPM4BoCState Relay status: Value of network variable "nvoNodeStatus" Ó / Ò Precedes sizes displayed: Ó...
Page 164: No Programming Unit Display
Troubleshooting Measures in case the room temperature is… (cont.) 3. Hydraulically balance the connected 6. Enable heating operation via the inte- heating circuits. gral instantaneous heating water heater (if installed) (see page 189). 4. Check the outside temperature sen- sor (see page 166). 5.
Page 165: Repairs
Troubleshooting Repairs Overview of sensors, drain valve and air vent valve A Collector L Safety high pressure switch B Drain valve M Electronic expansion valve (EEV) C Secondary circuit, return tempera- N Manual air vent valve ture sensor O Four-way diverter valve D Thermal expansion valve P LPG temperature sensor E Temperature sensor EVI...
Page 166 Troubleshooting Repairs (cont.) Draining the heat pump on the secondary side 1. Close on-site drain & fill valve. 2. Drain heat pump at secondary flow drain valve. Checking sensors For sensor connections to PCB 3 see For the position of the sensors in the heat page 212.
Page 167 Troubleshooting Repairs (cont.) Temperature sensors type Pt 500 Capturing element "Pt 500" ■ Flow temperature sensor, system (F13) ■ Buffer temperature sensor (F4) ■ Cylinder temperature sensor top/bot- tom (F6/F7) ■ Temperature sensor, external heat source (F20) ■ Flow/return temperature sensor, sec- ondary circuit (F8/F9) ■...
Page 168: Menu Structure Overview
Control settings Menu structure overview Separate document; menu tree Control settings by the contractor The following pages only describe set- 2. "BACK" to skip messages that may tings that are the exclusive domain of be displayed. specialists operating at the "Contrac- tor"...
Page 169: System Scheme
System definition control settings System scheme Adjust the system scheme during com- ■ "System definition" missioning according to the system ver- ■ "System scheme" sion. 11 different system schemes are available (see page 30). Delivered condition The components associated with the Setting 0 to 11 corresponding system scheme are auto-...
Page 170: Swimming Pool
System definition control settings Temperature differential for the heating limit (cont.) Menu Delivered condition ■ "Device settings" Setting 0 to 20 K ■ "Programming" ■ "System definition" ■ "Temp. diff. heating" Swimming pool Swimming pool heating Menu ■ "Device settings" "Yes"...
Page 171: Number Of Lag Heat Pumps
System definition control settings Cascade (cont.) Menu Delivered condition ■ "Device settings" Setting 0 / 1 / 2 ■ "Programming" ■ "System definition" ■ "Cascade control" Number of lag heat pumps Number of lag heat pumps in a cascade that are connected via LON or via external extension H1.
Page 172: Output Of Lag Heat Pumps
System definition control settings Output of lag heat pumps Average type-dependent heating output Menu of the lag heat pumps in a cascade, con- ■ "Device settings" nected via external extension H1. ■ "Programming" If the type-dependent heating output is ■ "System definition" correctly set, the heat pump control unit ■...
Page 173: External Operating Mode Changeover Heating Circuits
System definition control settings External operating mode changeover heating circuits Select which system components are Note affected by operating mode changeover In parameters "Ext.demand/Miopen" / (see the following table). "Ext.blocking/Miclose", additionally With the external operating mode set the effect that operating mode changeover, a heating circuit with mixer changeover should have.
Page 174: Operating Mode For External Operating Mode Changeover
System definition control settings Operating mode for external operating mode changeover Setting the operating mode that is ena- Operating modes bled with the external operating mode Operating instructions changeover. Value Operating mode (see operating instructions) Heating "0" "Standby" "OFF" "1" "Reduced"...
Page 175: External Demand/Mixer "Open
System definition control settings External operating mode changeover duration (cont.) Delivered condition Setting 0 to 12 h External demand/mixer "OPEN" Setting how the signals "Ext. Note demand"/"Mixer OPEN" should affect ■ Parameter "Ext.blocking/Miclose" the heat pump. takes priority over "Ext. demand/ Miopen"...
Page 176: External Blocking/Mixer "Closed
System definition control settings External blocking/mixer "CLOSED" Setting how signals "Ext. block- Note ing"/"Mixer CLOSE" should affect the ■ Parameter "Ext.blocking/Miclose" heat pump. takes priority over "Ext. demand/ Miopen". Please note ■ See also parameter "Set flow temper- The system may no longer be ature for external demand"...
Page 177: Pumps And Compressor, External Blocking
System definition control settings Pumps and compressor, external blocking Setting to determine which pumps are Note blocked when function "Ext. blocking" is Observe setting for parameter enabled (see following table). "Ext.blocking/Miclose" (see page 176). Value Secondary Cylinder Heating cir- Heating cir- Heating cir- pump/com- pump...
Page 178: Vitosolic
System definition control settings Pumps and compressor, external blocking (cont.) Value Secondary Cylinder Heating cir- Heating cir- Heating cir- pump/com- pump cuit pump cuit pump cuit pump pressor blocked M3 blocked M2 blocked A1 blocked blocked "30" "31" Menu Delivered condition ■...
Page 179: Auxiliary Output With Switching Times
System definition control settings Auxiliary output with switching times Time program for the device connected to the auxiliary output, e.g. DHW circu- lation pump. Operating instructions...
Page 180: Enabling The Compressor
Compressor control settings Enabling the compressor Enabling the compressor stage. Menu ■ "Device settings" Note ■ "Programming" Never block the heat pump compressor ■ "Compressor" in standard mode. ■ "Enable" "Yes" Compressor stage is used. Delivered condition "No" Compressor stage is not Setting Yes/No used, e.g.
Page 181: Defrost Stop Temperature
Compressor control settings Defrost stop temperature Evaporator temperature for the end of the defrost process of air/water heat pumps. As soon as temperature "Defrost stop t" is exceeded, the defrost process ends. The fan starts a few seconds before defrost stop, to remove any remaining water from the evaporator fins.
Page 182: Control Settings, External Heat Source Enable External Heat Source
Control settings, external heat source Enable external heat source To enable an additional, external heat Menu source. ■ "Device settings" If there is a corresponding heat demand, ■ "Programming" the external heat source can also be ■ "Ext. heat source" started by the heat pump control unit.
Page 183: External Heat Source For Dhw
Control settings, external heat source Dual-mode temperature (cont.) Above the dual-mode temperature, the ■ "Ext. heat source" heat pump control unit only starts the ■ "Dual-mode temperature" external heat source if, for example, a heat pump fault is present. Delivered condition 10 °C Setting –50 to +50 °C...
Page 184: Dhw Control Settings Set Cylinder Temperature
DHW control settings Set cylinder temperature DHW cylinder set temperature for DHW Operating instructions heating. Note If the heat pump alone cannot achieve the set DHW temperature, the instanta- neous heating water heater (accessory), immersion heater (on site) or an external heat source is also started.
Page 185: Hysteresis/Hysteresis Booster Heater
DHW control settings Maximum temperature for DHW cylinder (cont.) Menu Delivered condition 60 °C ■ "Device settings" Setting 20 to 80 °C ■ "Programming" ■ "DHW" ■ "Max. temperature" Hysteresis/Hysteresis booster heater Cylinder temperature hysteresis for C Booster heater hysteresis ("Hyst. starting and stopping DHW heating.
Page 186: Dhw Start Optimisation
DHW control settings Hysteresis/Hysteresis booster heater (cont.) Hysteresis Booster heater hysteresis Delivered condition 10 K Setting range 1 to 10 K 2 to 30 K DHW start optimisation Comfort function for DHW cylinder heat- Operating instructions ing. DHW stop optimisation Comfort function for DHW cylinder heat- Operating instructions ing.
Page 187: Parameters For Dhw Reheating
DHW control settings Temperature sensor 2 (cont.) DHW heating is started at the switching ■ "DHW" times according to the value of the ■ "Temperature sensor 2" upper cylinder temperature sensor; for the demand "Max. DHW volume" Delivered condition according to the value of the lower cyl- Setting Yes/No inder temperature sensor.
Page 188 DHW control settings Parameters for DHW reheating (cont.) Note ■ "DHW" "—": Setting this parameter has no influ- ■ "Booster heater" ence on the function of DHW reheating. "DHW with e heating" Menu ■ "Device settings" ■ "Programming" Booster heater DHW with e heat- Delivered condition Setting range...
Page 189: Instantaneous Heating Water Heater (Accessory)
Control settings, electric heater Instantaneous heating water heater (accessory) If an instantaneous heating water heater (accessory) is installed in the heating water flow, it must be enabled. It can be enabled either for DHW reheating only (see page 187) and/or for heating mode.
Page 190: Stage At Power-Off
Control settings, electric heater Maximum stage, electric booster heater (cont.) This setting determines the maximum Menu output (stage 1, 2 or 3) of the instanta- ■ "Device settings" neous heating water heaters, with which ■ "Programming" DHW or system heating is carried out. ■...
Page 191: Heat Pump For Drying Buildings
Control settings, hydraulics Heat pump for drying buildings For drying buildings, the heat pump can "Yes" Heat pump is used for drying be used in addition to the instantaneous a building. heating water heater (accessory). "No" Heat pump is not used for dry- If the heat pump is not ready for use (e.g.
Page 192 Control settings, hydraulics Screed programme (cont.) Note "2" Temperature/time profile 2 (to Observe the specifications of ZV parquet and flooring tech- EN 1264-4. The report to be provided by nology) the heating contractor must contain the following heat-up details: ■ Heat-up data with respective flow tem- peratures ■...
Page 193: Set Flow Temperature In Case Of External Demand
Control settings, hydraulics Screed programme (cont.) "5" Temperature/time profile 5 "8" Fixed value temperature pro- gramme Duration: 10 days "9" Fixed value temperature pro- gramme Duration: 15 days "10" Fixed value temperature pro- gramme 10 15 20 25 30 Duration: 20 days "11"...
Page 194: Operation With Three-Way Diverter Valve
Control settings, hydraulics Operation with three-way diverter valve If, on site, only one pump and one three- way diverter valve are used to switch between DHW heating and central heat- ing mode, parameter "Heat/DHW diverter v" must be changed to "Yes". "Yes"...
Page 195: Heating Water Buffer Cylinder
Control settings, heating water buffer cylinder Heating water buffer cylinder This function is only available for sys- ■ "Buffer cylinder" tem schemes 1 and 2. The heating ■ "Buffer cylinder" water buffer cylinder is optional for sys- tem schemes 1 and 2; system schemes Delivered condition 3 to 10 require the heating water buffer Setting...
Page 196: Maximum Temperature
Control settings, heating water buffer cylinder Hysteresis (cont.) Menu ■ "Device settings" ■ "Programming" ■ "Buffer cylinder" ■ "Hysteresis" Delivered condition Setting 2 to 20 K A Set temperature B Start hysteresis C Heating the heating water buffer cyl- inder OFF D Heating the heating water buffer cyl- inder ON Maximum temperature...
Page 197: Room Temperatures And Switching Times
Control settings, heating circuits Room temperatures and switching times Adjusting the set room temperatures and Operating instructions time programmes for all heating circuits (A1, M2 and M3). Enabling the remote control A Vitotrol 200 remote control unit can be Menu used for each heating circuit.
Page 198: Room Temperature Hook-Up (Heating Circuits)
Control settings, heating circuits Influence of room temperature hook-up (cont.) Menu Delivered condition ■ "Device settings" Setting 0 to 50 ■ "Programming" ■ "Heating circ. 1", "Heating circ. 2", "Heating circuit 3" ■ "Room t hook-up slope" Room temperature hook-up (heating circuits) This parameter determines the condi- Menu tions under which the set flow tempera-...
Page 199 Control settings, heating circuits Maximum set flow temperature (cont.) The set flow temperature, which is cal- culated from the outside temperature and the heating curve, is limited by this parameter to a maximum set flow tem- perature. For the heating circuit without mixer (A1), limited modulation properties mean the heat pump regulates to the return temperature.
Page 200: Control Settings - Communication Lon Communication Module
■ "Communication" code, subscriber number). The first part ■ "Subscriber number" is permanently set to the same value for all Viessmann appliances. The other "System number" parts comprise system and subscriber number. This enables subscribers to be grouped according to system number, for example to separate the external heat source in the LON as well.
Page 201: Fault Manager
Control settings - communication Fault manager Device is fault manager within a sys- "Yes" Device is fault manager. tem. "No" Device is not fault manager. This parameter determines whether the device should collect and display all sys- Menu tem fault messages. Furthermore, the ■...
Page 202: Outside Temperature Via Lon
Control settings - communication Outside temperature via LON If several subscribers use the current Menu outside temperature value, this can be ■ "Device settings" made available centrally by one device ■ "Programming" within a system. All other subscribers in ■ "Communication" the same system can receive the tem- ■...
Page 203: Heat Pump Numbers In A Cascade
Control settings - communication Heat pump numbers in a cascade Numbers of the heat pumps in a cas- cade, that are connected via LON. Numbers within a LON must be unique. Note Lag heat pumps that are connected via external extension H1 do not need to be numbered.
Page 204: Date/Time Control Settings Date And Time
Date/time control settings Date and time Date and time are factory-set and may Operating instructions be changed manually. Automatic summer/wintertime changeover In the delivered condition, the change- Menu over will always take place in the night ■ "Device settings" from Saturday to Sunday on the last ■...
Page 205: Overview Of The Pcbs And Connection Options
Connection and wiring diagrams Overview of the PCBs and connection options General information The terminal markings on the PCBs (e.g. X1.2) are preceded by the numbers 1 to Only the connections to be made are 3 (e.g. 3X1.2). These numbers are allo- shown in the following connection dia- cated to the three PCBs: grams.
Page 206 Connection and wiring diagrams Overview of the PCBs and connection options (cont.) Signalling and safety components on PCB 1 (cross connect PCB) The following terminals carry a switched ■ 1X3.3 phase L1: ■ 1X3.7 ■ 1X3.1 ■ 1X3.11 ■ 1X3.2 ■...
Page 207 Connection and wiring diagrams Overview of the PCBs and connection options (cont.) Signalling 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 CLOSED ■...
Page 208 Connection and wiring diagrams Overview of the PCBs and connection options (cont.) Function components 230 V~ on PCB 2 (main PCB)
Page 209 Connection and wiring diagrams Overview of the PCBs and connection options (cont.) PCB 2, terminal strip X8 Pos. Function Explanation Terminals End of safety chain 'Live' in case of fault-free safety 2X8.1 chain Compressor control via ■ Heat demand: Contact closed, 2X8.1 EEV controller (refrigerant 2X8.2 is 'live'...
Page 210 Connection and wiring diagrams Overview of the PCBs and connection options (cont.) Pos. Function Explanation Terminals w¢I Cylinder primary pump, Switch cylinder primary pump and 2X8.12 two-way shut-off valve (for two-way shut-off valve in parallel installation position see ■ Max. output: 130 W page 39) On-site connection w¢O...
Page 211 Connection and wiring diagrams Overview of the PCBs and connection options (cont.) Pos. Function Explanation Terminals Circulation pump for cylin- ■ Max. output: 130 W 2X7.10 der heating (for installation ■ Voltage: 230 V position see page 39) On-site connection DHW circulation pump ■...
Page 212 Connection and wiring diagrams Overview of the PCBs and connection options (cont.) Sensors and KM BUS on PCB 3 (sensor PCB)
Page 213: 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¢Q KM BUS — KM BUS 3X1.25 3X2.25 e¢W Buffer cylinder temperature sen- Pt 500 3X1.22 3X2.22 e¢E Outside temperature sensor Ni 500 3X1.16 3X2.16...
Page 214 Connection and wiring diagrams Safety chain, control circuit, main power… (cont.) Example: 3X1.2: PCB 3, terminal strip X1, termi- nal 2 1X1.?: PCB 1, terminal strip X1, any earth terminal 1X2.N: PCB 1, terminal strip X2, any neutral conductor terminal...
Page 215 Connection and wiring diagrams Safety chain, control circuit, main power… (cont.) Safety chain...
Page 216 Connection and wiring diagrams Safety chain, control circuit, main power… (cont.) A Power supply to heat pump control F Message input, power-OFF unit G Phase monitor B External demand (message input - H Phase monitor message input X For control circuit connection, see heat pump control unit) C Fault message - lag heat source page 219...
Page 217 Connection and wiring diagrams Safety chain, control circuit, main power… (cont.) 1x3.9 1x3.8 2x10.7 2x10.12 2x10.13 2x10.14 2x10.15 2x8.1 2x8.2 I Thermal circuit breaker - fan N For type AWH-I/AWH-O 120 only: J Message input Motor protection K Safety high pressure switch P For type AWH-I/AWH-O 120 only: L Low pressure message Electronic motor control...
Page 218 Connection and wiring diagrams Safety chain, control circuit, main power… (cont.) Q For type AWH-I/AWH-O 120 only: U Compressor contactor K1 Thermal breaker on full wave soft V For type AWH-I/AWH-O 120 only: starter Compressor contactor K2 R Compressor motor protection Y For continuation of safety chain, see S Compressor relay previous illustration...
Page 219 Connection and wiring diagrams Safety chain, control circuit, main power… (cont.) Control circuit...
Page 220 Connection and wiring diagrams Safety chain, control circuit, main power… (cont.) Switched phase DHW circulation pump ("Wtimer External heat source control (zero DHW Circ.") volt) Central fault message (zero volt) Instantaneous heating water Compressor control heater control (accessory) stage 2 Instantaneous heating water heater control (accessory) stage 1 Mixer |OPEN, external heat...
Page 221 Connection and wiring diagrams Safety chain, control circuit, main power… (cont.) M N/A O Mixer |OPEN, heating circuit with N Secondary pump mixer M2...
Page 222 Connection and wiring diagrams Safety chain, control circuit, main power… (cont.) P Mixer ~CLOSED, heating circuit U Fan motor Z For continuation of control circuit, with mixer M2 R Heating circuit pump for heating cir- see previous illustration sG Secondary pump (plug in cable har- cuit with mixer M2 ness) S Cylinder primary pump / shut-off...
Page 223 Connection and wiring diagrams Safety chain, control circuit, main power… (cont.) Power circuit - compressor D Compressor contactor K1 (see page 217) E Compressor motor protection (see page 217) F Starter G Compressor A Compressor power supply B Phase monitor (see page 112) C For type AWH-I/AWH-O 120 only: Compressor contactor K2...
Page 224: Parts List, Type Awh-I
Parts lists Parts list, type AWH-I Information for ordering spare parts. 037 Connector D28 Quote the part and serial no. (see type 038 Front panel cover insulation plate) and the position no. of the required 039 Rear side panel insulation part (as per this parts list).
Page 225 208 Top l.h. side panel 172 Type 114: Fan speed plug 209 Bottom l.h. side panel 174 Type 120: Fan speed plug 210 Viessmann logo 176 Type 110/114: Cable harness, low 211 Vitocal 350 logo voltage 212 Top back panel brace...
Page 226 Parts lists Parts list, type AWH-I (cont.)
Page 227 Parts lists Parts list, type AWH-I (cont.)
Page 228 Parts lists Parts list, type AWH-I (cont.)
Page 229 Parts lists Parts list, type AWH-I (cont.)
Page 230 Parts lists Parts list, type AWH-I (cont.)
Page 231 Parts lists Parts list, type AWH-I (cont.)
Page 232: Parts List, Type Awh-O
Parts lists Parts list, type AWH-O Information for ordering spare parts. 037 Connector D28 Quote the part and serial no. (see type 038 Front panel cover insulation plate) and the position no. of the required 039 Rear side panel insulation part (as per this parts list).
Page 233 206 Top cover sure 207 Back panel, bottom 161 Type 120: Connecting cable, com- 209 Bottom l.h. side panel pressor 210 Viessmann logo 162 Temperature sensor PT500 air dis- 211 Vitocal 350 logo charge/evaporator 212 Top back panel brace 163 Cable entries...
Page 234 Parts lists Parts list, type AWH-O (cont.) 303 Operating instructions 304 Connecting elements 305 Front panel fixings...
Page 235 Parts lists Parts list, type AWH-O (cont.)
Page 236 Parts lists Parts list, type AWH-O (cont.)
Page 237 Parts lists Parts list, type AWH-O (cont.)
Page 238 Parts lists Parts list, type AWH-O (cont.)
Page 239 Parts lists Parts list, type AWH-O (cont.)
Page 240 Parts lists Parts list, type AWH-O (cont.)
Page 241: Hydraulic Parameters Report
Commissioning/service reports Hydraulic parameters report Setting and test values Set value Commission- Testing the external heating circuit pumps Circulation pump type Circulation pump stage Overflow valve setting Primary circuit commissioning Air inlet temperature °C Air discharge temperature °C Temperature differential ΔT: Secondary circuit flow temperature = 35 °C 4 to 8 at air inlet temperature ≤...
Page 242 Commissioning/service reports Control parameters report (cont.) Parameter Page Setting range Delivered Commission- condition Op. mode change HC 0 to 11 Op mode change eff. 0 to 3 Op. mode change time 0 to 12 h Ext.demand/Miopen 0 to 7 Ext.blocking/Miclose 0 to 8 Ext.
Page 243 Commissioning/service reports Control parameters report (cont.) Parameter Page Setting range Delivered Commission- condition Electric heater Inst. heating water Yes/No heater Heating with electro Yes/No Max. stage E heat 1 to 3 Stage at power-OFF 0 to 3 Hydraulics HP for drying a building Yes/No Screed program 0 to 12...
Page 244 Commissioning/service reports Control parameters report (cont.) Parameter Page Setting range Delivered Commission- condition Heating circuit M3 Standard room temp 10 to 30 °C 20 °C Reduced room temp 10 to 30 °C 16 °C Switching times HC Remote control Yes/No Heating curve level -15 to 40 Heating curve slope...
Page 245: Specification
Specification Specification Note ■ The stated current indicates the max. ■ The output given is the recommended switching current of the switching con- connected load. tact (observe the total current of 5 A). ■ The total output of all connected appli- ■...
Page 246 Specification Specification (cont.) Vitocal 350-A Type AWH-I AWH-O Output data to DIN EN 14511 (2/35 °C, 5 K spread) Rated heating output 10.6 14.5 18.5 10.6 14.5 18.5 Power consumption Coefficient of perform- ance ∊ (COP) Output data to DIN EN 14511 (7/35 °C)
Page 247 Specification Specification (cont.) Vitocal 350-A Type AWH-I AWH-O Electrical values – heat pump Rated voltage 3/PE 400 V/50 Hz Rated current 18.3 18.3 Starting current (with full wave soft starter) Starting current (with stalled armature) Compressor fuse 3 x Z20...
Page 248 Specification Specification (cont.) Vitocal 350-A Type AWH-I AWH-O Connections Heating flow and return 1½" 1½" 1½" 1¼" 1¼" 1¼" Weight Sound power level at dB(A) 2 °C outside tempera- ture, 60 °C flow temper- ature (test with reference to DIN EN ISO 12102/...
Page 249: Heat Pump Commissioning Order
Electrical installation completed Hydraulic lines fully thermally insulated All windows and external doors are sealed Preferred appointment: Date Time Date Time All work ordered from Viessmann will be charged to me/us in accordance with the current Viessmann pricelist. Place/date Signature...
Page 250: Declaration Of Conformity
Certificates Declaration of conformity We, Viessmann Werke GmbH&Co KG, D-35107 Allendorf, declare as sole respon- sible body that the product Vitocal 350-A, type AWH-I, AWH-O, incl. heat pump control unit, complies with the following standards: DIN 8901 DIN EN 61 000-3-3; 2006-06 DIN EN 50 090-2-2;...
Page 251: Keyword Index
Keyword index Keyword index Control circuit........219 Appliance fuse.........167 Control panel......68, 74, 88 Applicability........256 Control parameters....122, 241 Auxiliary function......186 Control settings........168 Auxiliary output ■ Communication......200 ■ Switching times......179 ■ Compressor........180 ■ Date/time........204 ■ DHW..........184 Booster heater.........187 ■ Electric heater.......189 Buffer cylinder........195 ■...
Page 252 Keyword index Keyword index (cont.) DHW heating 1........47 External heat source DHW heating 2........49 ■ Dual-mode temperature....182 DHW reheating........187 ■ Enable..........182 Diagnosis ■ For DHW........183 ■ Heat pump........152 ■ Priority..........182 ■ Heat pump module.......151 External mixer closed......99 ■ Hours run........157 ■...
Page 253 Keyword index Keyword index (cont.) Heating water buffer cylinder...195 Level ■ Hysteresis........195 ■ Heating curve.......197 ■ Maximum temperature....196 Load class........157 ■ Set temperature......195 ■ Switching times......195 ■ Address........200 ■ Time program.......195 ■ Diagnosis........158 Heat pump ■ Fault manager......201 ■ Number.........203 ■...
Page 254 Keyword index Keyword index (cont.) Pumps..........90 Notes..........133 Pumps, external blocking....177 Number ■ Lag heat pump......171 Number of external heat pumps..171 Receive heartbeat......202 Remote control.........197 Remote control module....178 Operating mode Remote monitoring module....178 ■ Operating mode changeover..174 Repair work........117 ■ Room influence......198 Reports..........241 Operating mode changeover Required equipment.....35, 41...
Page 255 Keyword index Keyword index (cont.) Start optimisation......186 Tilting angle..........8 Stop optimisation......186 Time Subscriber number......200 ■ LON..........201 Summertime changeover....204 Time program Swimming pool......100, 170 ■ Heating circuit.......197 Switching times ■ Heating water buffer cylinder..195 ■ Auxiliary output......179 Time programme ■ DHW heating........184 ■...
Page 256 Applicability Vitocal 350-A air source heat pump, 400 V~ Type Serial no., type AWH-I Serial no., type AWH-O 7419 298 9 01000 ... 7419 300 9 01000 ... 7419 302 9 01000 ... 7419 303 9 01000 ... 7419 304 9 01000 ...

Viessmann Vitocal 350-A Installation And Service Instructions Manual

Compressor Control Settings

Control Settings, Electric Heater

Commissioning/Service Reports

Specification

Appendix

Certificates

Keyword Index

Quick Links

Related Manuals for Viessmann Vitocal 350-A

Summary of Contents for Viessmann Vitocal 350-A

Table of Contents