Nibe F1245 User guide

Installer manual
LEK
NIBE™ F1245
Ground source heat pump
IHB GB 1412-3
231611

4XLFN JXLGH
1DYLJDWLRQ
2N EXWWRQ FRQILUPVHOHFW
%DFN EXWWRQ EDFNXQGRH[LW
&RQWURO NQRE PRYHLQFUHDVHUHGXFH
A detailed explanation of the button functions can be found on page 34.
How to scroll through menus and make different settings is described on page 36.
6HW WKH LQGRRU FOLPDWH
;
The mode for setting the indoor temperature is reached, when in the start mode in the main menu, by pressing
the OK button twice. Read more about the settings on page 38.
,QFUHDVH KRW ZDWHU YROXPH
;
;
To temporarily increase the amount of hot water, first turn the control knob to mark menu 2 (water droplet) and
then press the OK button twice. Read more about the settings on page 46.
In event of disturbances in comfort
If a disturbance in comfort of any type occurs there are some measures that can be taken before you need to
contact your installer. See page 69 for instructions.

Table of Contents
1 Important information 2
Safety information 2
2 Delivery and handling 5
Transport 5
Assembly 5
Supplied components 6
Removing the covers 6
Removing parts of the insulation 7
3 The heat pump design 8
General 8
Electrical cabinets 10
Cooling section 12
4 Pipe connections 13
General 13
Dimensions and pipe connections 14
Brine side 14
Heating medium side 15
Hot water heater 15
Docking alternatives 15
5 Electrical connections 18
General 18
Connections 20
Settings 22
Optional connections 24
Connecting accessories 28
6 Commissioning and adjusting 29
Preparations 29
Filling and venting 29
Start guide 30
Post adjustment and venting 31
7 Control - Introduction 34
Display unit 34
Menu system 35
8 Control - Menus 38
Menu 1 - INDOOR CLIMATE 38
Menu 2 - HOT WATER 46
Menu 3 - INFO 48
Menu 4 - HEAT PUMP 49
Menu 5 - SERVICE 54
9 Service 63
Service actions 63
10 Disturbances in comfort 69
Info-menu 69
Manage alarm 69
Troubleshooting 69
11 Accessories 71
12 Technical data 73
Dimensions and setting-out coordinates 73
Technical specifications 74
Item register 80
1Table of Contents |NIBE™ F1245

Safety information
This manual describes installation and service proced-
ures 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
understand the hazards involved. Chil-
dren shall not play with the appliance.
Cleaning and user maintenance shall
not be made by children without super-
vision.
Rights to make any design or technical
modifications are reserved.
©NIBE 2013.
Symbols
NOTE
This symbol indicates danger to machine or
person.
Caution
This symbol indicates important information
about what you should observe when main-
taining your installation.
TIP
This symbol indicates tips on how to facilitate
using the product.
Marking
The CE marking means that NIBE ensures that the
product meets all regulations that are placed on it
based on relevant EU directives. The CE mark is obligat-
ory for most products sold in the EU, regardless where
they are made.
Serial number
The serial number can be found at the bottom right of
the front cover and in the info menu (menu 3.1).
6HULDO QXPEHU
Caution
Always give the product's serial number (14
digits) when reporting a fault.
Country specific information
Installer manual
This installer manual must be left with the customer.
NIBE™ F1245Chapter 1 | Important information2
1 Important information

Inspection of the installation
Current regulations require the heating installation to be inspected before it is commissioned. The inspection must
be carried out by a suitably qualified person. Fill in the page for information about installation data in the User
manual.
DateSignatureNotesDescription
✔
Brine (page 14)
System flushed
System vented
Antifreeze
Level/Expansion vessel
Particle filter
Safety valve
Shut off valves
Circulation pump setting
Heating medium (page 15)
System flushed
System vented
Expansion vessel
Particle filter
Safety valve
Shut off valves
Circulation pump setting
Electricity (page 18)
Fuses heat pump
Fuses property
Outside sensor
Room sensor
Current sensor
Safety breaker
Earth circuit-breaker
Setting of emergency mode thermostat
Miscellaneous
Guarantee submitted
3Chapter 1 | Important informationNIBE™ F1245

Contact information
KNV Energietechnik GmbH, Gahberggasse 11, 4861 SchörflingAT
Tel: [phone] Fax: [phone] E-mail: [e-mail] www.knv.at
NIBE Wärmetechnik AG, Winterthurerstrasse 710, CH-8247 FlurlingenCH
Tel: [phone] Fax: [phone] E-mail: inf[email protected] www.nibe.ch
Druzstevni zavody Drazice s.r.o, Drazice 69, CZ - 294 71 Benatky nad JizerouCZ
Tel: [phone] Fax: [phone] E-mail: [email protected] www.nibe.cz
NIBE Systemtechnik GmbH, Am Reiherpfahl 3, 29223 CelleDE
Tel: [phone] Fax: [phone] E-mail: inf[email protected] www.nibe.de
Vølund Varmeteknik A/S, Member of the Nibe Group, Brogårdsvej 7, 6920 VidebækDK
Tel: [phone] Fax: [phone] E-mail: inf[email protected] www.volundvt.dk
NIBE Energy Systems OY, Juurakkotie 3, 01510 VantaaFI
Puh: 09-274 697 0 Fax: [phone] E-mail: inf[email protected] www.nibe.fi
AIT France, 10 rue des Moines, 67000 HaguenauFR
Tel : [phone] Fax : [phone] E-mail: inf[email protected] www.nibe.fr
NIBE Energy Systems Ltd, 3C Broom Business Park, Bridge Way, Chesterfield S41 9QGGB
Tel: [phone] Fax: [phone] E-mail: inf[email protected] www.nibe.co.uk
NIBE Energietechniek B.V., Postbus 2, NL-4797 ZG WILLEMSTAD (NB)NL
Tel: [phone] Fax: [phone] E-mail: inf[email protected] www.nibenl.nl
ABK AS, Brobekkveien 80, 0582 Oslo, Postadresse: Postboks 64 Vollebekk, 0516 OsloNO
Tel. sentralbord: [phone] E-mail: [email protected] www.nibeenergysystems.no
NIBE-BIAWAR Sp. z o. o. Aleja Jana Pawła II 57, 15-703 BIAŁYSTOKPL
Tel: [phone] Fax: [phone] E-mail: [e-mail] www.biawar.com.pl
© "EVAN" 17, per. Boynovskiy, Nizhny NovgorodRU
Tel./fax [phone] E-mail: [email protected] www.nibe-evan.ru
NIBE AB Sweden, Box 14, Hannabadsvägen 5, SE-285 21 MarkarydSE
Tel: [phone] Fax: [phone] E-mail: inf[email protected] www.nibe.se
For countries not mention in this list, please contact Nibe Sweden or check www.nibe.eu for more information.
NIBE™ F1245Chapter 1 | Important information4

Transport
F1245 should be transported and stored vertically in a
dry place. When being moved into a building, F1245
may be leant back 45 °. Note! Can be tail heavy.
TIP
The side panels can be removed for easier in-
stallation in the building.
R
0
R
0
Pulling out the cooling module
To simplify transport and service, the heat pump can
be separated by pulling the cooling module out from
the cabinet.
See page 65 for instructions about the separation.
Assembly
႑Position F1245 on a firm base that can take the
weight, preferably on a concrete floor or foundation.
Use the product's adjustable feet to obtain a horizont-
al and stable set-up.
30 - 50 mm
႑The area where F1245 is located must be equipped
with floor drainage.
႑Install with its back to an outside wall, ideally in a
room where noise does not matter, in order to elim-
inate noise problems. If this is not possible, avoid
placing it against a wall behind a bedroom or other
room where noise may be a problem.
႑Wherever the unit is located, walls to sound sensitive
rooms should be fitted with sound insulation.
႑Route pipes so they are not fixed to an internal wall
that backs on to a bedroom or living room.
Installation area
Leave a space of 800 mm in front of the product. Ap-
prox 50 mm free space is required in order to open the
side hatches. The hatches do not need to be opened
during service, all service on F1245 can be carried out
from the front. Leave space between the heat pump
and wall behind (and any routing of supply cables and
pipes) to reduce the risk reproduction of any vibration.
(50) (50)


* A normal installation needs 300 - 400 mm (any side) for connec-
tion equipment, i.e. level vessel, valves and electrical equipment.
5Chapter 2 | Delivery and handlingNIBE™ F1245
2 Delivery and handling

Supplied components
LEK
LEK
LEK
Room sensorCurrent sensor (not
1x230V) (not
1x230V or 3x230V)
Outside sensor
LEK
LEK
O-ringsSafety valve
(0.3 MPa) (3 bar)
Level vessel
Location
The kit of supplied items is placed in packaging on top
of the heat pump.
Removing the covers
Front cover
1
2
LEK
LEK
1. Remove the screws from the lower edge of the
front cover.
2. Lift the cover out at the bottom edge and up.
Side covers
LEK
LEK
LEK
The side covers can be removed to facilitate the install-
ation.
1. Remove the screws from the upper and lower
edges.
2. Twist the cover slightly outward.
3. Move the cover backwards and slightly to the side.
4. Pull the cover to one side.
5. Pull the cover forwards.
NIBE™ F1245Chapter 2 | Delivery and handling6

Removing parts of the insula-
tion
Parts of the insulation can be removed to facilitate the
installation.
Insulation, top
1. Disconnect the cable from the motor and remove
the motor from the shuttle valve as illustrated.
LEK
LEK
A
B
LEK
2. Grip the handle and pull straight out as illustrated.
LEK
Insulation, immersion heater
NOTE
Electrical installation and service must be car-
ried out under the supervision of a qualified
electrician. Electrical installation and wiring
must be carried out in accordance with the
stipulations in force.
1. Remove the cover for the junction box according
to the description on page 19.
2. Grip the handle and pull the insulation carefully
towards you as illustrated.
LEK
7Chapter 2 | Delivery and handlingNIBE™ F1245

General
F1245
BT7
QN10
BT2
EB1
UB1
QM34
XL1
XL6 XL7
XL4 XL3 XL2
FR1
PF1
PF3
BT6
UB2
QM32
QM33
PF2
QM22
UB3
AA4
W130
QM31
AA4-XJ3
AA4-XJ3
SF1
View from above
;/ %7
View from behind
%)
NIBE™ F1245Chapter 3 | The heat pump design8
3 The heat pump design

Pipe connections
Connection, heating medium flowXL 1
Connection, heating medium returnXL 2
Connection, cold waterXL 3
Connection, hot waterXL 4
Connection, HWC*XL 5
Connection, brine inXL 6
Connection, brine outXL 7
* Only applies to enamelled or stainless steel vessels.
HVAC components
Venting, coilQM 22
Shut-off valve, heating medium flowQM 31
Shut off valve, heating medium returnQM 32
Shut off valve, brine outQM 33
Shut-off valve, brine inQM 34
Shuttle valve, climate system/water heaterQN 10
Sensors etc.
Flow meter (only for Germany, Switzerland and
Austria)
BF 1
Outside sensorBT 1
Temperature sensors, heating medium flowBT 2
Temperature sensor, hot water chargingBT 6
Temperature sensor, hot water topBT 7
Electrical components
Display unitAA 4
AA4-XJ3 USB socket
AA4-XJ4 Service outlet (No function)
Immersion heaterEB 1
Sacrificial anode*FR 1
SwitchSF 1
Network cable for NIBE UplinkTM
W130
* Only heat pump with enamelled vessel.
Miscellaneous
Rating platePF 1
Type plate, cooling sectionPF 2
Serial number platePF 3
Cable gland, incoming electricityUB 1
Cable glandUB 2
Cable gland, rear side, sensorUB 3
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
9Chapter 3 | The heat pump designNIBE™ F1245

Electrical cabinets
)'
$$
$$
)$
)%
$$
$$
F1245
Electrical components
Immersion heater cardAA 1
Base cardAA 2
Input circuit boardAA 3
Sacrificial anode card*AA 8
Miniature circuit-breakerFA 1
Motor cut-out**FB 1
Temperature limiter/Emergency mode thermo-
stat
FD 1
* Only heat pump with enamelled vessel.
** 1x230 V, 3x230 V 6-10 kW, 3x400V 5 kW has auxili-
ary switch for motor cut-out.
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
NIBE™ F1245Chapter 3 | The heat pump design10

4$
)% ; &$
;
1x230 V 5-12 kW
3x400V5kW
)% $$
3x400 V 6-12 kW
4$
)% ; 5)
3x230 V 6-8 kW
4$
)% ; 5)
3x230 V 10 kW
%(
4$
)% ; 5)
3x230 V 12 kW
Electrical components
Soft-start cardAA 10
Phase sequence monitor (3-phase)BE 4
CapacitorCA 1
Motor cut-out**FB 1
Contactor, compressorQA 10
Soft-starterQA 30
Suppression capacitorRF 1
Terminal blockX 301
Terminal blockX 302
** 1x230 V, 3x230 V 6-10 kW, 3x400V 5 kW has auxili-
ary switch for motor cut-out.
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
11Chapter 3 | The heat pump designNIBE™ F1245

Cooling section
BT10
AA100
BT11
QM2
BT12
GP2
GP1
BT3
QM1
1x230V 5 kW
3x400V 5 kW
EP2
BT14
BT17
EP1
BP2
BT15
BP1
GQ10
HS1
XL21
QN1
EB10 XL20
[9    N:
[9    N:
(3
%7
%7
(3
%3
%7
%3
*4
+6
;/
41
;/ (%
[9    N:
[9  N:
(3
%7
%7
(3
%3
%7
%3
*4
+6
;/
41
(% ;/
[9  N:
(3
%7
%7
(3
%3
%7
%3
*4
+6
;/
41
(% ;/
Pipe connections
Service connection, high pressureXL 20
Service connection, low pressureXL 21
HVAC components
Circulation pumpGP 1
Brine pumpGP 2
Drainage, climate systemQM 1
Draining, brine sideQM 2
Sensors etc.
High pressure pressostatBP 1
Low pressure pressostatBP 2
Temperature sensors, heating medium returnBT 3
Temperature sensor, brine inBT 10
Temperature sensor, brine outBT 11
Temperature sensor, condenser supply lineBT 12
Temperature sensor, hot gasBT 14
Temperature sensor, fluid pipeBT 15
Temperature sensor, suction gasBT 17
Electrical components
Joint cardAA 100
Compressor heaterEB 10
Cooling components
EvaporatorEP 1
CondenserEP 2
CompressorGQ 10
Drying filterHS 1
Expansion valveQN 1
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
NIBE™ F1245Chapter 3 | The heat pump design12

General
Pipe installation must be carried out in accordance with
current norms and directives. F1245 can operate with
a return temperature of up to 58 °C and an outgoing
temperature from the heat pump of 70 (65 °C with
only the compressor).
F1245 is not equipped with external shut off valves;
these must be installed to facilitate any future servicing.
Caution
Any high points in the climate system, must
be equipped with air vents.
NOTE
The pipe system needs to be flushed out be-
fore the heat pump is connected so that debris
cannot damage component parts.
Symbol key
MeaningSymbol
Venting valve
Shut-off valve
Non-return valve
Shunt / shuttle valve
Safety valve
Trim valve
Temperature sensor
Level vessel
Expansion vessel
Pressure gauge
P
Circulation pump
Particle filter
Auxiliary relay
Flow meter (only for Germany, Switzerland and
Austria)
Compressor
Heat exchanger
System diagram
F1245 consists of a heat pump, water heater, electrical
module, circulation pumps and a control system. F1245
is connected to the brine and heating medium circuits.
In the heat pump evaporator, the brine (water mixed
with anti-freeze, glycol or ethanol) releases its energy
to the refrigerant, which is vaporised in order to be
compressed in the compressor. The refrigerant, of
which the temperature has now been raised, is passed
to the condenser where it gives off its energy to the
heating medium circuit and, if necessary, to the water
heater. If there is a greater need for heating/hot water
than the compressor can provide there is an integrated
immersion heater.
;/ ;/ ;/;/ ;/ ;/
Connection, heating medium flowXL 1
Connection, heating medium returnXL 2
Connection, cold waterXL 3
Connection, hot waterXL 4
Connection, brine inXL 6
Connection, brine outXL 7
13Chapter 4 | Pipe connectionsNIBE™ F1245
4 Pipe connections

Dimensions and pipe connec-
tions
620
600
560 440
70
1775
650*
25-50
25
50
130
210
390
470
525
650*
;/ ;/ ;/;/ ;/ ;/
Pipe dimensions
125-10(kW)Connection
28(mm)(XL6)/(XL7) Brine in/out ext Ø
2822(mm)(XL1)/(XL2) Heating medium
flow/return ext Ø
22(mm)(XL3)/(XL4) Cold/hot water Ø
Brine side
Collector
Rock heat, recom-
mended active
drilling depth (m)
Surface soil heat,
recommended col-
lector length (m)
Type
70-90200-3005kW
90-110250-4006kW
120-145325-2x2508kW
150-180400-2x30010 kW
180-2102x250-2x35012 kW
Applies to PEM hose 40x2.4 PN 6.3.
These are rough example values. At installation the
correct calculations must be made according to local
conditions.
Caution
The length of the collector hose varies depend-
ing on the rock/soil conditions, climate zone
and on the climate system (radiators or under-
floor heating).
Max length per coil for the collector should not exceed
400 m.
In those cases where it is necessary to have several
collectors, these should be connected in parallel with
the possibility for adjusting the flow of the relevant
coil.
For surface soil heat, the hose should be buried at a
depth determined by local conditions and the distance
between the hoses should be at least 1 metre.
For several bore holes, the distance between the holes
must be determined according to local conditions.
Ensure the collector hose rises constantly towards the
heat pump to avoid air pockets. If this is not possible,
airvents should be used.
As the temperature of brine system can fall below 0 °C
it must be protected against freezing down to -15 °C.
1 litre of ready mixed brine per meter of collector hose
(applies when using PEM-hose 40x 2.4 PN 6.3) is used
as a guide value when making the volume calculation.
Side connection
It is possible to angle the brine connections, for connec-
tion to the side instead of top connection.
To angle out a connection:
1. Disconnect the pipe at the top connection.
2. Angle the pipe in the desired direction.
3. If necessary, cut the pipe to the desired length.
Connecting the brine side
႑Insulate all indoor brine pipes against condensation.
႑The level vessel must be installed as the highest point
in the brine system on the incoming pipe before the
brine pump (Alt. 1).
* Can be angled for side connection.
NIBE™ F1245Chapter 4 | Pipe connections14

If the level vessel cannot be placed at the highest
point an expansion vessel must be used (Alt. 2).
NOTE
Note that condensation may drip from the
level vessel. Position the vessel so that this does
not harm other equipment.
႑Details of the antifreeze used must be shown on the
level vessel.
႑Install the supplied safety valve under the level vessel
as illustrated. The entire length of the overflow water
pipe from the safety valves must be inclined to pre-
vent water pockets and must also be frost proof.
႑Install shut off valves as close to the heat pump as
possible.
႑Fit the supplied particle filter on the incoming pipe.
In the case of connection to an open groundwater
system, an intermediate frost-protected circuit must
be provided, because of the risk of dirt and freezing in
the evaporator. This requires an extra heat exchanger.
P
;/
;/
&ROOHFWRU
$OW  $OW 
Heating medium side
Connecting the climate system
A climate system is a system that regulates indoor
comfort with the help of the control system in F1245
and for example radiators, underfloor heating/cooling,
fan convectors etc.
႑Install all required safety devices, shut-off valves (as
close to the heat pump as possible), and supplied
particle filter.
႑The safety valve must have a maximum 0.25 MPa (2.5
bar) opening pressure and be installed on the heating
medium return as illustrated. The entire length of
the overflow water pipe from the safety valves must
be inclined to prevent water pockets and must also
be frost proof.
႑When connecting to a system with thermostats on
all radiators, a relief valve must be fitted, or some of
the thermostats must be removed to ensure sufficient
flow.
P
;/ ;/ ;/ ;/
Hot water heater
Connecting the hot water heater
႑The hot water heater in the heat pump must be
supplied with necessary set of valves.
႑The mixing valve must be installed if the setting is
changed so that the temperature can exceed 60 °C.
႑The setting for hot water is made in menu 5.1.1.
႑The safety valve must have a maximum 1.0 MPa (10.0
bar) opening pressure and be installed on the incom-
ing domestic water line as illustrated. The entire
length of the overflow water pipe from the safety
valves must be inclined to prevent water pockets and
must also be frost proof.
Docking alternatives
F1245 can be connected in several different ways, some
of which are shown below.
Further option information is available at www.nibe.eu
and in the respective assembly instructions for the ac-
cessories used. See page 71 for a list of the accessories
that can be used with F1245.
15Chapter 4 | Pipe connectionsNIBE™ F1245

Extra electric hot water heater
The heat pump should be supplemented with an elec-
tric water heater, for example NIBE COMPACT, if a
whirlpool or other significant consumer of hot water
is installed.
႑The valve connection on COMPACT can be separated.
The mixing valve remains on COMPACT and the re-
maining valve connector can be used for incoming
cold water in F1245.
VV
KV
&203$&7
&:
+:
Buffer vessel
If the climate system volume is too small for the heat
pump output, the radiator system can be supplemented
with a buffer vessel, for example NIBE UKV.
UKV
P
Ventilation recovery
The installation can be supplemented with the exhaust
air module FLM to provide ventilation recovery.
႑Pipes and other cold surfaces must be insulated with
diffusion-proof material to prevent condensation.
႑The brine system must be supplied with a pressure
expansion vessel (CM3). If there is a level vessel (CM2)
this should be replaced.
Frånluft
Ø 160
Avluft
Ø 160
P
([WUDFW DLU
([KDXVW
DLU
)/0
Free cooling
The installation can be supplemented with fan con-
vectors, for example, in order to allow connections for
free cooling (PCS 44).
႑Pipes and other cold surfaces must be insulated with
diffusion-proof material to prevent condensation.
႑Where the cooling demand is high, fan convectors
with drip trays and drain connection are needed.
႑The brine system must be supplied with a pressure
expansion vessel (CM3). If there is a level vessel (CM2)
this should be replaced.
P
Fläktkonvektor
3
2
1
)DQ FRQYHFWRUV
NIBE™ F1245Chapter 4 | Pipe connections16

Under floor heating systems
The external circulation pump is dimensioned for the
under floor heating system’s demand.
If the climate system volume is too small for the heat
pump output, the underfloor heating system can be
supplemented with a buffer vessel, for example NIBE
UKV.
UKV
P
Two or more climate systems
When more than one climate system, with a lower
temperature, is to be heated up, the following connec-
tion can be used. The shunt valve lowers the temperat-
ure to, for example, the under floor heating system.
The ECS 40/ECS 41 accessory is required for this con-
nection.
Ground water system
An intermediate heat exchanger is used to protect the
heat pump's exchanger from dirt. The water is released
into a buried filtration unit or a drilled well. See page
27 for more information about connecting a ground
water pump.
If this docking alternative is used, "min. brine out" in
menu 5.1.7 "br pmp al set." must be changed to a
suitable value to prevent freezing in the heat ex-
changer.
Pool
Charging of the pool is controlled by the pool sensor.
In the case of low pool temperatures, the shuttle valve
reverses direction and opens towards the pool ex-
changer. The POOL 40 accessory is required for this
connection.
Pool
17Chapter 4 | Pipe connectionsNIBE™ F1245

General
All electrical equipment, except the outdoor sensors,
room sensors and the current sensors are ready connec-
ted at the factory.
႑Disconnect the heat pump before insulation testing
the house wiring.
႑F1245 is not reconnectable between 1-phase and 3-
phase, neither is it reconnectable between 3x230V
and 3x400V.
႑If the building is equipped with an earth-fault
breaker, F1245 should be equipped with a separate
one.
႑If a miniature circuit breaker is used this should have
at least motor characteristic “C”. See page 74 for fuse
size.
႑For wiring diagrams for the heat pump, see separate
installation handbook for wiring diagrams.
႑Communication and sensor cables to external con-
nections must not be laid close to high current cables.
႑The minimum area of communication and sensor
cables to external connections must be 0.5 mm² up
to 50 m, for example EKKX or LiYY or equivalent.
႑When cable routing in F1245, cable grommets (e.g.
UB1-UB3, marked in image) must be used. In
UB1-UB3 the cables are inserted through the heat
pump from the back to the front.
NOTE
The switch (SF1) must not be moved to ""or
"" until the boiler has been filled with water.
Otherwise the temperature limiter, thermostat,
compressor and the immersion heater can be
damaged.
NOTE
Electrical installation and service must be car-
ried out under the supervision of a qualified
electrician. Cut the current with the circuit
breaker before carrying out any servicing.
Electrical installation and wiring must be car-
ried out in accordance with the stipulations in
force.
F1245
FD1
FA1
FB1
FD1-SF2
UB2
UB1
UB3
Miniature circuit-breaker
The heat pump operating circuit and a large proportion
of its internal components are internally fused by a
miniature circuit breaker (FA1).
Temperature limiter
The temperature limiter (FD1) cuts the current supply
to the electrical addition if the temperature rises
between 90 and 100°C and can be manually reset.
Resetting
The temperature limiter (FD1) is accessible behind the
front cover. Reset the temperature limiter by pressing
the button (FD1-SF2) using a small screwdriver.
Motor cut-out
Motor protection breaker (FB1) cuts the power to the
compressor if the current is too high.
Resetting
The motor protection breaker (FB1) is accessible behind
the front cover. The breaker is reset by twisting the
control knob to horizontal position.
Caution
Check the miniature circuit-breaker, temperat-
ure limiter and motor protection breaker. They
may have tripped during transportation.
NIBE™ F1245Chapter 5 | Electrical connections18
5 Electrical connections