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Nibe F1345 Service Manual

Ground source heat pump
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Service manual
F1345
Ground source heat pump
SEM GB 1714-2
431514

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Summary of Contents for Nibe F1345

  • Page 1 Service manual F1345 Ground source heat pump SEM GB 1714-2 431514...
  • Page 2 Other components Sensors Electronics 6 Troubleshooting Alarm list Troubleshooting guide Function check, relays/components 7 Component replacement Basic Main components Circuit board and electronics Sensors 8 Technical data Technical specifications 9 Dimensions and setting-out coordin- ates Item register Chapter | F1345...
  • Page 3 Do not allow children to clean or main- tain the appliance unsupervised. This is an original manual. It may not be translated without the approval of NIBE. We reserve the right to make design modifications without prior notice. ©NIBE 2017.
  • Page 4 Marking Safety precautions F1345 is CE marked and fulfils IP21. Caution The CE marking means that NIBE ensures that the Install the system in full accordance with this installation product meets all regulations that are placed on it based manual.
  • Page 5 - R410A means that the pressure is about 1.6 times as high as for conventional refrigerants. - The filling connections on units with R410A are different sizes, to prevent the system being filled with the incorrect refrigerant by mistake. F1345 Chapter 1 | Important information...
  • Page 6 EP15-XL6 EP15-XL7 EP15-XL1 EP15-XL2 AA4-XJ4 AA4-XJ3 EP15-PF2 EP15 EP14-XL6 -XJ4 -XJ13 EP14-XL7 EP14-XL1 -XJ5 -XJ3 -XJ1 EP14-XL2 EP14-PF2 EP14 -XJ7 -XJ11 -AA26 -XJ9 -XJ8 -AA2 -XJ6 -XJ10 -AA27 -AA101-X2 -AA3 -AA101-X1 -AA101 Chapter 2 | The heat pump design F1345...
  • Page 7 -EP14 (only 24 and 30 kW) -XJ 5 Connector, heating medium pump, cooling module -EP14 -XJ 6 Compressor heater-EP15 -XJ 7 Connector, brine pump, cooling module -EP15 (only 24 and 30 kW) F1345 Chapter 2 | The heat pump design...
  • Page 8 Electrical cabinets F1345 24 kW, 3x400 V AA10 Screws Screws F1345 30, 40 and 60 kW, 3x400 V AA10 Screws Screws Electrical components AA 10 Soft-start card FC 1 Miniature circuit-breaker Designations in component locations according to standard IEC 81346-1 and 81346-2.
  • Page 9 Cooling section F1345 40 kW, 3x400V F1345 24 and 30 kW, 3x400 V BT14 BT12 AA100 BT15 X401 BT10 BT17 XL20 GQ10 XL21 EB10 BT11 BT29 F1345 60 kW, 3x400V F1345 40 and 60 kW, 3x400 V BT12 BT14 AA100...
  • Page 10 Joint connector, compressor and motor module Cooling components EP 1 Evaporator EP 2 Condenser GQ 10 Compressor HS 1 Drying filter QN 1 Expansion valve Designations in component locations according to standard IEC 81346-1 and 81346-2. Chapter 2 | The heat pump design F1345...
  • Page 11 3 System description Principle of operation F1345 24 and 30 kW, 3x400 V QM53 HQ13 BT10 BT17 GQ10 BT29* BT14 BT12 RM13 QM57 EP15 FL11 FL13 RM11 QM52 BT11 BT15 HQ15 QM56 QM51 HQ12 BT29* BT10 BT17 GQ10 BT14 BT12...
  • Page 12 F1345 40-60 kW, 3x400V BT10 GQ10 BT29 BT14 RM13 QM57 FL13 GP16 HQ13 EP15 QM53 BT11 BT15 HQ15 QM56 BT10 GQ10 BT29 BT14 RM12 QM55 FL10 FL12 QM50 RM10 EP14 BT11 BT15 HQ14 QM54 List of components EP15 Cooling module A Circulation pump The different components are on both EP14 and EP15.
  • Page 13 Room sensor In suitable indoor location. Correction of indoor temperature. BT71* External return line sensor On the heating system return line. View. * Externally mounted (not included in outline diagram). ** Not on 24 kW. F1345 Chapter 3 | System description...
  • Page 14 On incoming collector line. View. AZ2-BT27 Collector out On outgoing collector line. View. AZ3-BT20 Exhaust air In exhaust air. View. AZ3-BT21 Extract air In extract air. Controls defrosting AZ3-BT26 Collector in On incoming collector line. View. Chapter 3 | System description F1345...
  • Page 15 On outgoing collector line. View. QZ1-BT70 Outgoing hot water On outgoing HWC pipe. Actual value for mixer valve. EQ1-BT82 HWC Return On HWC return. Only display. EQ1-BT83 Water heater On top of additional water heater. Only display. F1345 Chapter 3 | System description...
  • Page 16 If the water heater/accumulator tank (CP10) is fitted with an immersion heater (IU) and a junction box (K11) the "temporary lux" function can be used. A contactor is required. Refer to the Installer manual for description of possible docking alternatives. Chapter 3 | System description F1345...
  • Page 17 1.59 2.36 Nominal flow 1.18 1.62 2.09 3.10 Max external available pressure at nominal flow Max/min incoming temperature °C See diagram page 67. Min. outgoing brine temperature without/with AMB 30 °C -12 / -14 F1345 Chapter 3 | System description...
  • Page 18 1.5 bar Time conditions Minimum time between stop and start is 5 min. 60 kW 2.0 bar 2.7 bar Minimum time from start to next start is 20 min. Low pressure transmitter 30 - 60kW: Chapter 4 | Cooling circuit F1345...
  • Page 19 Overheating is shown in the table below and must be checked when the temperature of the heating medium flow is 30 - 55 °C and the brine in is -5 - +15 °C. F1345 superheat 24 kW 4 - 6 °C 30 kW 4 - 6 °C...
  • Page 20 Max. operating pressure: 1.0 MPa Operating temperature: 5 - 80 °C (90 °C briefly) (94) Heating medium 24 - 60 kW pump (GP1) Max lift height: 7.5 m Control signal: PWM 0-10 V DC (max-min speed) Ø28 Chapter 5 | Component description F1345...
  • Page 21 Brine pump (GP2) 24-30 kW Max lift height: 10 m Control signal: PWM 0-10 V DC (max-min speed) Brine pump (GP16) 40 kW Max lift height: 18 m 60 kW Max lift height: 18 m F1345 Chapter 5 | Component description...
  • Page 22 Reconnection differential: 0.7 bar Compressor heater Output 2 x 43 W Low pressure sensor 24-40 kW (BP8) Breaking value: 1.3 bar Reconnection differential: 0.1 bar 60 kW Breaking value: 3.5 bar Reconnection differential: 0.1 bar Chapter 5 | Component description F1345...
  • Page 23 (EP14 - QN10) 0.908 0.533 Crankcase heater Crankcase heater 0.779 0.469 (EP14 - EB10) (EP15 - EB10) 0.672 0.414 HM pump (EP14 - HM pump (EP15 GP1) - GP1) Brine pump (EP14 No function - GP16) F1345 Chapter 5 | Component description...
  • Page 24 SYNC Flashes when SMS 40 sends/receives SMS. Compr. on: Steady light when the compressor is active. Orange A steady light means that supply voltage is OK. Bypass: Or- Bypass bridge installed (alarm ignored). ange Chapter 5 | Component description F1345...
  • Page 25 Continuous light during active output. ange PWM2: Or- Continuous light during active output. ange K1 - K4: Or- A steady light means that the relevant relay ange is engaged. Output Function See relevant accessory. F1345 Chapter 5 | Component description...
  • Page 26 ■ Defective sensor ■ Flt: AZ1-BT20 No contact with the sensor Circulation pump (AZ1-GP2) Open-circuit or short-cir- (temperature sensor, exhaust in FLM is blocked. cuit on sensor input. air). ■ Defective sensor Chapter 6 | Troubleshooting F1345...
  • Page 27 3). ■ Flt: EP23 BT2 No contact with the sensor Controls the return line Open-circuit or short-cir- (temperature sensor, heating sensor (EP23-BT3). cuit on sensor input. medium supply, climate sys- ■ Defective sensor tem 4). F1345 Chapter 6 | Troubleshooting...
  • Page 28 240 minutes because the hot gas has exceeded 135 °C. Erroneous serial no The heat pump has a serial Compressors are stopped Incorrectly entered serial number that does not exist. and relay is deactivated. number. Chapter 6 | Troubleshooting F1345...
  • Page 29 Incorrectly set dipswitch. ■ Sensor fault AZ2- Contact with the sensor has Blocks AZ2-GP2 (FLM2). Open-circuit or short-cir- BT20 been missing for longer than cuit on sensor input. 60 seconds (exhaust air). ■ Defective sensor F1345 Chapter 6 | Troubleshooting...
  • Page 30 (normally closed). ■ Perm. com. error Communication with the ac- Accessory is blocked. Defective communication "ACS45” cessory board has been cables. missing for 15 seconds. ■ Incorrectly set dipswitch. Chapter 6 | Troubleshooting F1345...
  • Page 31 Alarm from GBM (OPT) None. Check the gas boiler. This alarm was generated by the gas boiler Perm. com. error Communication with Pool 2 Accessory is blocked. Defective communication pool 2 has been missing for cables. 15 seconds. F1345 Chapter 6 | Troubleshooting...
  • Page 32 1 C at brine in during a start attempt. High Brine in Brine out has Compressor blocked. The brine temperat- Possible incorrect reached set max ure has fallen 1°C at settings temperature. brine in during a start attempt. Chapter 6 | Troubleshooting F1345...
  • Page 33 The accessory is ac- tivated in the dis- play while not con- nected with the communication cable. ■ Incorrectly connec- ted communica- tion cable. ■ Incorrectly set dipswitch. ■ No electrical sup- ply to the access- ory card. F1345 Chapter 6 | Troubleshooting...
  • Page 34 Preheating of com- Compressor is Stopped at the same progress pressor blocked time as compressor heater/crankcase heater. SPA not updated Current spot price is Can influence the in- Check connection to not available. stallation’s priorities. the Internet. Chapter 6 | Troubleshooting F1345...
  • Page 35 5.12. played. ext. alarm Status on AUX-in None blocked Additional heat ex- None ternal blocked blocked The compressor is None externally blocked starts Display has restarted None F1345 Chapter 6 | Troubleshooting...
  • Page 36 (Applies to upper module B on Replace. EP15.) Are the characteristics for the sensor OK? Measured from edge connector AA26-X3 (base board). (See section “Electrical wiring diagram” in Installer Manual.) Defective AA2 or AA26 (base board) - Replace. Chapter 6 | Troubleshooting F1345...
  • Page 37 Are the characteristics for the sensor OK? Measured from the connected sensor cable on terminal block AA3-X6 (see Check wiring, switches. section “temperature sensor”). (See section “Electrical wiring diagram in the Installer Manual”.) Replace AA3 (input card). F1345 Chapter 6 | Troubleshooting...
  • Page 38 Replace the sensor. (See section “temperature sensor”.) Are the characteristics for the sensor OK? Measured from the connected sensor cable on AA5 Check wiring, switches. (accessory card) (see "temperature sensor" section.) Replace AA5 (accessory card). Chapter 6 | Troubleshooting F1345...
  • Page 39 Is/are the wiring/connections intact Action. to soft start (AA10)? Is/are wiring/terminals intact from the terminals -X2 to the Action. compressor (GQ10)? Is the compressor's current Replace the compressor. consumption normal? Replace miniature circuit breaker. F1345 Chapter 6 | Troubleshooting...
  • Page 40 Display condenser supply (BT12) and return line sensors (BT3) Action. correct Lack of refrigerant or other fault in Fault in cooling circuit. Contact an the cooling circuit. Check cooling authorised refrigeration technician. circuit. Chapter 6 | Troubleshooting F1345...
  • Page 41 (AA3-X2) and on the display board (AA1-X8)? (see electrical wiring diagram in IHB) Replace the base board (AA2 / AA26). Has the fault been corrected? Replace the display card (AA4). F1345 Chapter 6 | Troubleshooting...
  • Page 42 Action. (AA2/AA26) -X9? Check that the Power light is Replace the base board green on the soft start card. (AA2/AA26). Is Com flashing once per second? Replace the soft-start board (AA10). Chapter 6 | Troubleshooting F1345...
  • Page 43 Action. correctly set for the accessory? Are the communications cables correctly connected: - between terminal block - AA2-X6 (F1345 without 2.0) or AA101-X10 (F1345 with 2.0) and the accessory board (AA5-X4) (does Action. not apply to alarm 79) - to following accessory board (if...
  • Page 44 Output Function EP12-AA5-K4 Groundwater pump EP21-AA5-K2 Mixing valve, close Hot water circulation(AXC50) EP21-AA5-K3 Mixing valve, open Output Function EP21-AA5-K4 External circulation pump GP11-AA5-K4 HWC pump Climate system 3 (AXC50) Output Function EP22-AA5-K2 Mixing valve, close Chapter 6 | Troubleshooting F1345...
  • Page 45 Board AA2 Output Function 100 % approx 0 V DC Not lit EP8-AA5-K1 Circulation pump, solar coil (GP4) 50 % approx 5 V DC Half lit EP8-AA5-K2 Cooling approx 10 V DC EP8-AA5-K3 Reversing valve HW/heating F1345 Chapter 6 | Troubleshooting...
  • Page 46 Cut the current with the circuit breaker before carrying out any servicing. F1345 can contain liquids at high temperature and under high pressure. When replacing components on F1345 only re- placement parts from NIBE may be used.
  • Page 47 Caution The cooling modules are easier to remove if drained first. Weight of the cooling module Type (F1345) Weight (kg) 24 kW 30 kW 40 kW 143.5...
  • Page 48 Remove the connector from the underside of the display unit (this procedure need only be done if you are going to pull out the upper cooling module). Chapter 7 | Component replacement F1345...
  • Page 49 Cooling module EP14 (lower): XJ1 (A), XJ3 (B), XJ4 (C), XJ5 (D), XJ10 (E) and EP14-AA100:XJ1 (F). Cooling module EP15 (upper): XJ2 (G), XJ6 (H), XJ7 (I), XJ8 (J), XJ9 (K) and EP15-AA100:XJ1 (L). EP15 EP14 Remove the screws (two for each cooling module). F1345 Chapter 7 | Component replacement...
  • Page 50 Pull off the clips (four for each cooling module) and separate the pipes carefully. Chapter 7 | Component replacement F1345...
  • Page 51 Carefully pull out the upper cooling module (EP15) using the module's lifting eyelets. Use a height adjustable relief surface for this procedure. F1345 Chapter 7 | Component replacement...
  • Page 52 Carefully pull out the lower cooling module (EP14) using the module's lifting eyelets. If the heat pump is not secured in position the upper cooling module must always be removed before the lower one can be pulled out. The cooling module is installed in reverse order. Chapter 7 | Component replacement F1345...
  • Page 53 NOTE At reinstallation, new O-rings must replace the existing ones at the connections to the heat pump (see image). F1345 Chapter 7 | Component replacement...
  • Page 54 3 Slacken off 12 screws. (Dotted line means that the screw is not visible from this side.) 4 Remove the cover on the cooling module. Chapter 7 | Component replacement F1345...
  • Page 55 7 Slacken off 7 screws. 8 Remove the left/rear side panel on the cooling mod- ule. 9 Unscrew the compressor's cables (3x phases + ground). Ground cable 10 Disconnect the com- pressor cables. F1345 Chapter 7 | Component replacement...
  • Page 56 Discharge ant remains before you con- tinue. Remove any existing pipe insulation around the hot gas pipe. 13 Disconnect the pipes for Suction gas suction gas and hot gas. 14 Remove the compressor. Chapter 7 | Component replacement F1345...
  • Page 57 3 Slacken off 12 screws. 4 Remove the cover on the cooling module. 5 Slacken off 8 screws. 6 Remove the right/rear side panel on the cooling mod- ule. F1345 Chapter 7 | Component replacement...
  • Page 58 Remove any insula- tion. 8 Slacken off the bulb for the expansion valve. Bulb 9 Disconnect the pipes and remove the valve. Expansion valve (QN1) Chapter 7 | Component replacement F1345...
  • Page 59 4 Remove the electric switch on the circulation pump. 5 Remove the electric switch for the control cable for the circulation pump. 6 Disconnect and remove the circulation pump. Connections Electrical connections F1345 Chapter 7 | Component replacement...
  • Page 60 4 Remove the electric switch on the circulation pump. 5 Remove the electric switch for the control cable for the circulation pump. 6 Disconnect and remove the circulation pump. Connections Electrical switch Chapter 7 | Component replacement F1345...
  • Page 61 3 Remove the screws that secure the card. AA26 Screw Plastic clip 4 Remove the card from the plastic clips (2x) by holding in the clip hooks and pulling the card upwards. 5 Replace the card. F1345 Chapter 7 | Component replacement...
  • Page 62 9 Separate the boards by separating the edge-to-edge connector. 10 Replace the relevant board. 11 Assemble in reverse or- der. Chapter 7 | Component replacement F1345...
  • Page 63 1 Detach the cable from the lower edge of the display Catch unit. 2 Press the catch on the up- per rear side of the display unit towards you. 3 Remove the display unit. Electrical switch Internet contact F1345 Chapter 7 | Component replacement...
  • Page 64 Sensors Mounting Install the temperature sensor with cable ties with the heat conducting paste and aluminium tape. Then insulate with supplied insulation tape. Location See section Sensors etc. on page 13 for sensor location. Chapter 7 | Component replacement F1345...
  • Page 65 2 x 1.7 2 x 1.7 Cut-out value pressostat HP 3.2 (32 bar) (42 bar) Difference pressostat HP -0.7 (-7 bar) Cut-out value pressostat LP 0.08 (0.8 bar) (2 bar) Difference pressostat LP 0.07 (0.7 bar) F1345 Chapter 8 | Technical data...
  • Page 66 With feet removed, the height is approx. 1930 mm. 24 and 30 kW with internal brine pump. 40 and 60 kW with supplied external brine pump. 40 and 60 kW without supplied external brine pump. Chapter 8 | Technical data F1345...
  • Page 67 Incoming brine temp, °C Köldbärare in, temperatur Köldbärare in, temperatur Köldbärare in, temperatur Köldbärare in, temperatur Incoming brine temp Framledning Framledning Flow pipe Framledning Flow pipe Framledning Return pipe Returledning Returledning Return pipe Returledning Returledning F1345 Chapter 8 | Technical data...
  • Page 68 9 Dimensions and setting-out coordinates 80 145 Chapter 9 | Dimensions and setting-out coordinates F1345...
  • Page 69 Hot gas temperature, 18 Outline diagram, 18 Low pressure pressostat, 18 Low pressure sensor, 18 Phase monitor, 18 Phase monitor, 18 Time conditions, 18 Principle of operation, 11 Working area, 18 Outline diagram, 18 F1345 Chapter 10 | Item register...
  • Page 70 Top panel, 46 Troubleshooting, 26 Function check, relays/components, 44 Function check, circulation pumps, 45 Relay test - forced control, 44 Troubleshooting guide, 36 Troubleshooting guide, 36 Working area, 18 Working range heat pump, 67 Chapter 10 | Item register F1345...
  • Page 72 WS name: -Gemensamt WS version: a350 WS release date: 2017-04-07 13:44 Publish date: 2017-05-18 10:58 NIBE AB Sweden Hannabadsvägen 5 Box 14 SE-285 21 Markaryd info@nibe.se www.nibe.eu...