Nibe F1245 Manuel utilisateur
Service manual
LEK
F1245
Ground source heat pump
SEM GB 1720-2
431504
Table of Contents
41 Important information
4Document information
4Safety information
52 The heat pump design
5The heat pump design
113 System description
11Principle of operation
15System diagram
184 Cooling circuit
18Outline diagram
18Compressor control
19Expansion valve
205 Component description
20Compressor (GQ10)
21Other components
24Sensors
24Electronics
276 Troubleshooting
27Alarm list
37Troubleshooting guide
48Function check, relays/components
517 Component replacement
51Basic
54Main components
65Circuit board and electronics
69Temperature sensor
708 Technical specifications
70Dimensions and setting-out coordinates
711x230V
723x230V
743x400 V
75Miscellaneous
76
Working range heat pump, compressor opera-
tion
77Item register
3Table of Contents |F1245
Document information
This technical manual is a complement to the Installer
handbook for F1245, containing:
■Description of functions and component description.
■Information to facilitate fault-tracing.
■Instructions for replacing components.
■Supplementary technical information.
The document applies to heat pumps with software
version 7968R2.
The heat pump software version can be found in the info
menu (menu 3.1).
Safety information
This manual describes installation and service procedures
for implementation by specialists.
This appliance can be used by children
aged from 8 years and above and per-
sons with reduced physical, sensory or
mental capabilities or lack of experience
and knowledge if they have been given
supervision or instruction concerning use
of the appliance in a safe way and under-
stand the hazards involved. Children shall
not play with the appliance. Cleaning
and user maintenance shall not be made
by children without supervision.
Rights to make any design or technical
modifications are reserved.
©NIBE 2017.
Symbols
NOTE
This symbol indicates danger to person or ma-
chine .
Caution
This symbol indicates important information
about what you should observe when maintain-
ing your installation.
TIP
This symbol indicates tips on how to facilitate
using the product.
Marking
The CE mark is obligatory for most products sold
in the EU, regardless of where they are made.
CE
Classification of enclosure of electro-technical
equipment.
IP21
Danger to person or machine.
!
Read the User Manual.
Serial number
The serial number can be found at the bottom right of
the front cover and in the info menu (menu 3.1).
Caution
You need the product's (14 digit) serial number
for servicing and support.
F1245Chapter 1 | Important information4
1 Important information
The heat pump design
General
F1245
BT7
QN10
BT2
EB1
PF1
UB1
QM34
QM31
XL1
XL6
XL4
FR1
XL3
XL7
XL2
QM22
UB3
AA4
W130
SF1
AA4-XJ4
AA4-XJ3
BT6
UB2
QM32
QM33
PF2
View from above
XL5 BT7
View from behind
BF1
5Chapter 2 | The heat pump designF1245
2 The heat pump design
Pipe connections
Connection, heating medium flowXL1
Connection, heating medium returnXL2
Connection, cold waterXL3
Connection, hot waterXL4
Connection, HWC*XL5
Connection, brine inXL6
Connection, brine outXL7
* Only heat pumps with enamelled or stainless steel vessel.
HVAC components
Venting, coilQM22
Shut-off valve, heating medium flowQM31
Shut off valve, heating medium returnQM32
Shut off valve, brine outQM33
Shut-off valve, brine inQM34
Shuttle valve, climate system/water heaterQN10
Sensors etc.
Flow meter**BF1
Outdoor temperature sensor*BT1
Temperature sensors, heating medium flowBT2
Temperature sensor, hot water chargingBT6
Temperature sensor, hot water topBT7
**Only heat pumps with energy meter
* Not illustrated
Electrical components
Display unitAA4
AA4-XJ3 USB socket
AA4-XJ4 Service outlet (No function)
Immersion heaterEB1
El. anode*FR1
SwitchSF1
Network cable for NIBE UplinkW130
* Only heat pump with enamelled vessel.
Miscellaneous
Rating platePF1
Type plate, cooling sectionPF2
Cable gland, incoming electricityUB1
Cable glandUB2
Cable gland, rear side, sensorUB3
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
F1245Chapter 2 | The heat pump design6
Distribution boxes
F1245
AA1
FD1
AA8
FA1
FB1
AA3
AA2
Electrical components
Immersion heater cardAA1
Base cardAA2
Input circuit boardAA3
Electrical anode board*AA8
Miniature circuit-breakerFA1
Motor cut-out**FB1
Temperature limiter/Emergency mode thermostatFD1
* Only heat pump with enamelled vessel.
** 1x230 V, 3x230 V 6-10 kW, 3x400V 5 kW has auxiliary switch
for motor cut-out.
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
7Chapter 2 | The heat pump designF1245
1x230 V 5-12 kW
3x400 V 5 kW
FB1
X302 CA1
X301 QA30
3x400 V 6-12 kW
FB1 AA10
3x230 V 6-10 kW
X302
AA10
FB1
3x230 V 12 kW
BE4
X302 RF1
QA10
FB1
Electrical components
Soft-start cardAA10
Phase sequence monitor (3-phase)BE4
CapacitorCA1
Motor cut-out**FB1
Contactor, compressorQA10
Soft-starterQA30
Suppression capacitorRF1
Terminal blockX301
Terminal blockX302
** 1x230 V, 3x230 V 6-10 kW, 3x400V 5 kW has auxiliary switch
for motor cut-out.
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
F1245Chapter 2 | The heat pump design8
Cooling section
5-8kW
UN
BT11
QM2
GP2
BT10
AA100
QM1
BT3
GP1
BT12
10 & 12 kW
BT12
GP2
GP1
BT3
QM1
BT10
AA100
BT11
QM2
1x230 V 5 kW
3x400 V 5 kW
UN
EP2
BT14
BT17
BP2
BT15
BP1
EP1
GQ10
HS1
XL21
QN1
XL20
EB10
3x230 V 6-10 kW
3x400 V 6-10 kW
UN
EP2
BT17
BT14
BP2
BT15
BP1
XL20
EP1
GQ10
HS1
XL21
QN1
EB10
1x230 V 8-12 kW
3x400 V 12 kW
UN
EP2
BT14
BT17
BP2
BT15
BP1
EB10
EP1
GQ10
HS1
XL21
QN1
XL20
3x230 V 12 kW
Växlare är tunnare i Light
versioner
Kyldel 15, 17 kW
BT14
BT17
BP2
BT15
BP1
EB10
EP1
GQ10
HS1
XL21
QN1
XL20
EP2
9Chapter 2 | The heat pump designF1245
Pipe connections
Service connection, high pressureXL20
Service connection, low pressureXL21
HVAC components
Circulation pumpGP1
Brine pumpGP2
Drainage, climate systemQM1
Draining, brine sideQM2
Sensors etc.
High pressure pressostatBP1
Low pressure pressostatBP2
Temperature sensors, heating medium returnBT3
Temperature sensor, brine inBT10
Temperature sensor, brine outBT11
Temperature sensor, condenser supply lineBT12
Temperature sensor, hot gasBT14
Temperature sensor, fluid pipeBT15
Temperature sensor, suction gasBT17
Electrical components
Joint cardAA100
Compressor heaterEB 10
Cooling components
EvaporatorEP1
CondenserEP2
CompressorGQ10
Drying filterHS1
Expansion valveQN1
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
F1245Chapter 2 | The heat pump design10
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10
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