Nibe F1245 User manual

IHB EN 2004-1
531675
INSTALLATION MANUAL
Ground source heat pump
NIBE F1245

Quick guide
Navigation
Ok button (confirm/select)
Back button (back/undo/exit)
Control knob (move/increase/reduce)
A detailed explanation of the button functions can be found on page 38.
How to scroll through menus and make different settings is described on page 41.
Set the indoor climate
2X
INDOOR CLIMATE
HEAT PUMP INFO
HOT WATER
The mode for setting the indoor temperature is accessed by pressing the OK button twice, when in the start
mode in the main menu.
Increase hot water volume
2X
1X
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.

41 Important information
4Safety information
4Symbols
4Marking
5Serial number
5Recovery
5Environmental information
6Inspection of the installation
72 Delivery and handling
7Transport
7Assembly
8Supplied components
8Removing the covers
9Removing parts of the insulation
103 The heat pump design
10General
12Distribution boxes
14Cooling section (EP14)
164 Pipe connections
16General
17Dimensions and pipe connections
18Brine side
18Heating medium side
19Cold and hot water
19Docking alternatives
215 Electrical connections
21General
23Connections
25Settings
26Optional connections
30Connecting accessories
326 Commissioning and adjusting
32Preparations
32Filling and venting
33Start-up and inspection
36Setting the heating curve
387 Control - Introduction
38Display unit
39Menu system
438 Control - Menus
43Menu 1 - INDOOR CLIMATE
43Menu 2 - HOT WATER
43Menu 3 - INFO
45Menu 4 - HEAT PUMP
46Menu 5 - SERVICE
599 Service
59Service actions
6610 Disturbances in comfort
66Manage alarm
6911 Accessories
7112 Technical data
71Dimensions and setting-out coordinates
72Electrical data
73Technical specifications
75Energy labelling
80Item register
83Contact information
3Table of ContentsNIBE F1245
Table of Contents

Safety information
This manual describes installation and service proced-
ures for implementation by specialists.
The manual must be left with the customer.
This appliance can be used by children
aged from 8 years and above and persons
with reduced physical, sensory or mental
capabilities or lack of experience and
knowledge if they have been given super-
vision or instruction concerning use of the
appliance in a safe way and understand
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 2020.
Water may drip from the safety valve’s
overflow pipe. The entire length of the over-
flow water pipe must be routed to a suitable
drain and be inclined to prevent water pock-
ets, and must also be frost-proof. The over-
flow pipe must be at least the same size as
the safety valve. The overflow pipe must be
visible and its mouth must be open and not
located close to electrical components.
F1245 must be installed via an isolator
switch. The cable area has to be dimensioned
based on the fuse rating used.
Symbols
NOTE
This symbol indicates danger to person or ma-
chine .
Caution
This symbol indicates important information
about what you should consider when installing
or servicing the 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.
IPX1B
Danger to person or machine.
!
Read the User Manual.
NIBE F1245Chapter 1 | Important information4
1 Important information

Serial number
The serial number can be found at the bottom right of
the front cover, in the info menu (menu 3.1) and on the
type plate (PZ1).
Serial number
Caution
You need the product's ((14 digit) serial number
for servicing and support.
Recovery
Leave the disposal of the packaging to the in-
staller who installed the product or to special
waste stations.
Do not dispose of used products with normal
household waste. It must be disposed of at a
special waste station or dealer who provides this type
of service.
Improper disposal of the product by the user results in
administrative penalties in accordance with current le-
gislation.
Environmental
information
F-GAS REGULATION (EU) NO. 517/2014
This unit contains a fluorinated greenhouse gas that is
covered by the Kyoto agreement.
The equipment contains R407C, a fluorinated green-
house gas with a GWP value (Global Warming Potential)
of 1,774. Do not release R407C into the atmosphere.
5Chapter 1 | Important informationNIBE F1245

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.
In addition, fill in the page for the installation data in the User Manual.
DateSigna-
ture
NotesDescription
✔
Brine (page 18)
System flushed
System vented
Antifreeze
Level/Expansion vessel
Particle filter
Safety valve
Shut off valves
Circulation pump setting
Heating medium (page 18)
System flushed
System vented
Expansion vessel
Particle filter
Safety valve
Shut off valves
Circulation pump setting
Electricity (page 21)
Connections
Main voltage
Phase voltage
Fuses heat pump
Fuses property
Outside sensor
Room sensor
Current sensor
Safety breaker
Earth circuit-breaker
Setting of emergency mode thermo-
stat
NIBE F1245Chapter 1 | Important information6

Transport
F1245 should be transported and stored vertically in a
dry place. When being moved into a building, F1245
may be leant back 45 °.
Ensure that F1245 has not been damaged during trans-
port.
Caution
The product can be tail heavy.
Remove the outer panels in order to protect them when
moving in confined spaces inside buildings.
R
0
R
0
EXTRACTING 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 62 for instructions about the separation.
Assembly
• Place F1245 on a solid foundation indoors that can
take the heat pump's weight. Use the product's ad-
justable feet to obtain a horizontal and stable set-up.
30 - 50 mm
30 - 50 mm
15 - 40 mm
20-55 mm
• Because water comes from F1245, the area where
the heating pump is located must be equipped with
floor drainage.
•Install with its back to an outside wall, ideally in a room
where noise does not matter, in order to eliminate
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.
• Wherever the unit is located, walls to sound sensitive
rooms should be fitted with sound insulation.
• Route pipes so they are not fixed to an internal wall
that backs on to a bedroom or living room.
INSTALLATION AREA
Leave a free space of 800 mm in front of the product.
Approx. 50 mm free space is required on each side, to
remove the side panels (see image). The panels do not
need to be removed during service. All service on F1245
can be carried out from the front. Leave space between
the heat pump and the wall behind (and any routing of
supply cables and pipes) to reduce the risk of any vibra-
tion being propagated.
(50) (50)
800
*
*
* A normal installation needs 300 – 400 mm (any side) for connection
equipment, i.e. level vessel, valves and electrical equipment.
7Chapter 2 | Delivery and handlingNIBE F1245
2 Delivery and handling

Supplied components
LEK
LEK
LEK
Current sensor
3 x
Room sensor
1 x
Outside sensor
1 x
LEK
Level vessel
1 x
O-rings
8 x
LEK
Safety valve
0.3 MPa (3 bar)
1 x
WILO
LEK
LEK
WILO
WILO
2,5(22)
H- 50 - 2,5
TUV-SV-97-525
WILO
LEK
LEK
WILO
WILO
2,5(22)
H- 50 - 2,5
TUV-SV-97-525
Particle filter
6 – 10 kW
1 x G1
1 x G3/4
12 kW
1 x G1
1 pcs G1 1/4
Compression ring
couplings
6-10 kW
2 x (ø28 x G25)
3 x (ø22 x G20)
12 – 15 kW
5 x (ø28 x G25)
17 kW
3 x (ø28 x G25)
2 x (ø35 x G32)
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
LEK
LEK
LEK
1. Remove the screws from the lower edge of the
front panel.
2. Lift the panel 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 hatch outwards and backwards.
4. Assembly takes place in the reverse order.
NIBE F1245Chapter 2 | Delivery and handling8

Removing parts of the
insulation
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 22.
2. Grip the handle and pull the insulation carefully to-
wards you as illustrated.
LEK
9Chapter 2 | Delivery and handlingNIBE F1245

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
EP14
EP14-AA11
VIEW FROM ABOVE
XL5 BT7
VIEW FROM BEHIND
BF1
NIBE F1245Chapter 3 | The heat pump design10
3 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 unit
AA4-XJ3 USB socket
AA4-XJ4 Service outlet (No function)
AA4
Motor moduleAA11
Immersion heaterEB1
El. anode*FR1
SwitchSF1
Network cable for NIBE UplinkW130
* Only heat pump with enamelled vessel.
MISCELLANEOUS
Cooling sectionEP14
Rating platePF1
Type plate, cooling sectionPF2
Cable gland, incoming electricityUB1
Cable glandUB2
Cable gland, rear side, sensorUB3
Designations according to standard EN 81346-2.
11Chapter 3 | The heat pump designNIBE F1245

Distribution boxes
F1245
FQ10
AA8
AA1
FC1
AA3
AA2
AA7
ELECTRICAL COMPONENTS
Immersion heater cardAA1
Base cardAA2
Input circuit boardAA3
Extra relay circuit board1 AA7
Electrical anode board2 AA8
Miniature circuit-breakerFC1
Temperature limiter/Emergency mode thermostatFQ10
1Only for F1145PC and F1245PC
2Only heat pump with enamelled vessel.
NIBE F1245Chapter 3 | The heat pump design12

MOTOR MODULE (AA11)
3X400 V 6-10 kW
LEK
LEK
LEK
FC1
AA10
3x400V 12 kW
FC10 AA10
ELECTRICAL COMPONENTS
Soft-start cardAA10
Miniature circuit-breakerFC1
Motor cut-outFC10
13Chapter 3 | The heat pump designNIBE F1245

Cooling section (EP14)
6-8kW
GP1
BT3
QM1
BT10
GP2
BT11
QM2
AA100
BT12
10 kW
GP2
GP1
BT3
QM1
BT10
BT11
QM2
AA100
BT12
12 kW
BT12
GP2
GP1
BT3
QM1
BT10
AA100
BT11
QM2
6-10 kW
EP2
BT17
BT14
BT15
BP1
XL20
EP1
GQ10
HS1
BP2
XL21
QN1
EB10
12 kW
UN
EP2
BT14
BT17
BP2
BT15
BP1
EB10
EP1
GQ10
HS1
XL21
QN1
XL20
NIBE F1245Chapter 3 | The heat pump design14

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 heaterEB10
COOLING COMPONENTS
EvaporatorEP1
CondenserEP2
CompressorGQ10
Drying filterHS1
Expansion valveQN1
15Chapter 3 | The heat pump designNIBE F1245

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
Ensure that incoming water is clean. When
using a private well, it may be necessary to
supplement with an extra water filter.
Caution
Any high points in the climate system, must
be equipped with air vents.
NOTE
The pipe systems need to be flushed out be-
fore the heat pump is connected so debris
cannot damage component parts.
NOTE
Water may drip from the safety valve’s over-
flow pipe. The entire length of the overflow
water pipe must be routed to a suitable drain
and be inclined to prevent water pockets, and
must also be frost-proof. The overflow pipe
must be at least the same size as the safety
valve. The overflow pipe must be visible and
its mouth must be open and not located close
to electrical components.
SYMBOL KEY
MeaningSymbol
Venting valve
Shut-off valve
Non-return valve
Circulation pump
Expansion vessel
Auxiliary relay
Compressor
Pressure gauge
Level vessel
Particle filter
Safety valve
Temperature sensor
Trim valve
Reversing valve/shunt
Heat exchanger
NIBE F1245Chapter 4 | Pipe connections16
4 Pipe connections

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.
VVKV
KBinVBf VBr KBut
XL1 XL6 XL7XL4 XL3 XL2
Connection, heating medium flowXL1
Connection, heating medium returnXL2
Connection, cold waterXL3
Connection, hot waterXL4
Connection, brine inXL6
Connection, brine outXL7
Dimensions and pipe
connections
620
600
560 440
70
1775
650*
25-50
25
50
130
210
390
470
525
650*
620
600
560 440
70
1775
650*
25-50
25
50
130
210
390
470
525
650*
XL1 XL6 XL7XL4 XL3 XL2
PIPE DIMENSIONS
126-10(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
* Can be angled for side connection.
17Chapter 4 | Pipe connectionsNIBE F1245

Brine side
COLLECTOR
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) and the heating requirement of
the building Each installation must be sized in-
dividually.
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.
Because the temperature of the brine system can fall
below 0 °C, it must be protected against freezing down
to -15 °C. When making the volume calculation, use 1
litres of ready mixed brine per metre of collector hose
(applies when using PEM-hose 40x2.4 PN 6.3) as a guide
value.
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
• Insulate all indoor brine pipes against condensation.
•The level vessel must be installed as the highest point
in the brine system on the incoming pipe before the
brine pump (Alt. 1).
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.
• Details of the antifreeze used must be shown on the
level vessel.
•Install the enclosed safety valve below the level vessel
as illustrated.
• Install shut off valves as close to the heat pump as
possible.
• Fit the enclosed particle filter on the incoming brine.
TIP
If filling connection KB25/KB32 is used, the
enclosed filterball does not need to be fitted.
In the case of connection to an open groundwater sys-
tem, 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
-QZ20
Alt. 1 Alt. 2
XL6
XL7
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.
• Install all required safety devices, shut-off valves (as
close to the heat pump as possible), and supplied
particle filter.
NIBE F1245Chapter 4 | Pipe connections18

• Fit safety valve on heating medium return as illus-
trated. Recommended opening pressure is 0.25 MPa
(2.5 bar). For information about max opening pressure,
see technical specifications.
• When connecting to a system with thermostats on all
radiators (or underfloor heating coils), either a bypass
valve must be fitted or some of the thermostats must
be removed to ensure there is sufficient flow.
P
XL1
XL2
Cold and hot water
CONNECTING COLD AND HOT WATER
• Fit shut-off valve, non-return valve and safety valve as
illustrated.
•The safety valve must have a maximum 1.0 MPa (10.0
bar) opening pressure and be installed on the incoming
domestic water line as shown.
• A mixer valve must also be installed, if the factory
setting for hot water is changed. National regulations
must be observed.
• The setting for hot water is made in menu 5.1.1 (page
47).
XL3
XL4
Docking alternatives
F1245 can be connected in several different ways, some
of which are shown below.
Further option information is available at nibe.eu and in
the respective assembly instructions for the accessories
used. See page 69 for a list of the accessories that can
be used with F1245.
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.
EXTRA HOT WATER HEATERS
The system should be supplemented with an extra water
heater, if a large bath tub or other significant consumer
of hot water is installed.
Water heater with immersion heater
If it is possible to use a water heater with an immersion
heater, connect it as illustrated below.
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 30
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 suit-
able value to prevent freezing of the heat exchanger.
-EP12-GP3
-EP12-HQ40
-EP12-EP4
-EP12-AA25
-EP12
19Chapter 4 | Pipe connectionsNIBE F1245

VENTILATION RECOVERY
The installation can be supplemented with the exhaust
air module NIBE FLM to provide ventilation recovery.
• Pipes and other cold surfaces must be insulated with
diffusion-proof material to prevent condensation.
• The brine system must be supplied with a pressure
expansion vessel. If there is a level vessel this should
be replaced.
P
FREE COOLING
The accessory PCS 44 allows the connection of passive
cooling, for example with fan coils. The cooling system
is connected to the heat pump brine circuit, whereby
cooling is supplied from the collector via a circulation
pump and shunt valve.
• Pipes and other cold surfaces must be insulated with
diffusion-proof material to prevent condensation.
• Where the cooling demand is high, fan convectors
with drip trays and drain connection are needed.
• The brine system must be supplied with a pressure
expansion vessel. If there is a level vessel this should
be replaced.
-EP25-AA25
-EP25-QN18-EP25-BT64
-EP25-GP13
-EP25-BT65 -EP25-RM1
-EP25
TWO OR MORE CLIMATE SYSTEMS
In buildings with several climate systems that require
different supply temperatures, the accessory
ECS 40/ECS 41 can be connected. A shunt valve then
lowers the temperature to the underfloor heating sys-
tem, for example.
-EP21-RM1
-EP21-GP10-EP21-BT2
-EP21-AA25
-EP21-BT3
-EP21-QN25
-EP21
POOL
With the POOL 40 accessory, you can heat the pool
with your heat pump.
During pool heating, the heating medium circulates
between the F1245 and the pool exchanger using the
heat pump’s internal circulation pump.
-CL11-HQ4-CL11-BT51-CL11-GP9
-CL11-EP5-CL11-QN19
-CL11-AA25
-CL11
NIBE F1245Chapter 4 | Pipe connections20