Nibe F1145 5 User guide

Installer manual
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NIBE™ F1145
UK 1x230V
Ground source heat pump
IHB GB 1108-1
431074

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A detailed explanation of the button functions can be found on page 39.
How to scroll through menus and make different settings is described on page 41.
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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 43.
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To temporarily increase the amount of hot water (if a hot water heater is installed to your F1145), 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 50.
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 70 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
3 The heat pump design 7
General 7
Electrical cabinets 8
Cooling section 10
4 Pipe connections 11
General 11
Dimensions and pipe connections 12
Brine side 12
Heating medium side 13
Hot water heater 14
Docking alternatives 14
5 Electrical connections 17
General 17
Connections 19
Settings 21
Optional connections 22
Connecting accessories 24
6 Commissioning and adjusting 25
Preparations 25
Filling and venting 25
Start guide 26
Post adjustment and venting 36
7 Control - Introduction 39
Display unit 39
Menu system 40
8 Control - Menus 43
Menu 1 - INDOOR CLIMATE 43
Menu 2 - HOT WATER 50
Menu 3 - INFO 52
Menu 4 - HEAT PUMP 53
Menu 5 - SERVICE 57
9 Service 63
Service actions 63
10 Disturbances in comfort 70
Info-menu 70
Manage alarm 70
Troubleshooting 70
11 Accessories 72
12 Technical data 73
Dimensions and setting-out coordinates 73
Technical specifications 74
Item register 77
1Table of Contents |NIBE™ F1145

Safety information
This manual describes installation and service procedures
for implementation by specialists.
This appliance is not intended for use by persons (includ-
ing children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concern-
ing use of the appliance by a person responsible for their
safety.
Children should be supervised to ensure that they do not
play with the appliance.
Rights to make any design or technical modifications are
reserved.
©NIBE 2011.
Symbols
NOTE
This symbol indicates danger to machine or
person.
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.
Serial number
The serial number can be found at the bottom right of
the front cover and in the info menu (menu 3.1).
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Caution
Always give the product's serial number when
reporting a fault.
Country specific information
Installer manual
This installer manual must be left with the customer.
Great Britain
This installation is subject to building regulation approval,
notify the local Authority of intention to install.
Use only manufacturer’s recommended replacement
parts.
Benchmark places responsibilities on both manufacturers
and installers. the purpose is to ensure that customers
are provided with the correct equipment for their needs,
that it is installed, commissioned and serviced in accord-
ance with the manufacturers instructions by competent
persons and that it meets the requirements of the appro-
priate Building Regulations. The Benchmark Checklist can
be used to demonstrate compliance with Building Regu-
lations and should be provided to the customer for future
reference.
Installers are required to carry out the installation, com-
missioning and servicing work in accordance with the
Benchmark Code of practice which is available from the
Heating and Hotwater Industry Council who manage and
promote the Scheme. Visit www.centralheating.co.uk for
information.
Warranty information
Thank you for installing a new NIBE heat pump in your
home.
NIBE heat pumps are manufactured in Sweden to the
very highest standard so we are pleased to offer our
customers a comprehensive guarantee.
NIBE™ F1145Chapter 1 | Important information2
1 Important information

The product is guaranteed for 24 months for parts and
labour from the date of installation or 33 months from
the date of manufacture, whichever is the shorter.
The NIBE guarantee is based on the unit being installed
and commissioned by a NIBE accredited installer, serviced
every year and the Benchmark documents completed.
Where this condition is not met, any chargeable spare
parts or components issued within the applicable guaran-
tee period still benefit from a 12 month warranty from
the date of issue by the manufacturer.
We recommend the installer completes and returns as
soon as possible, your guarantee registration card or
completes the guarantee form on the NIBE website
www.nibe.co.uk.
Electrical Supply
The heat pump must be permanently connected to a
230V ac 50Hz supply.
All system components shall be of an approved type and
all wiring to current I.E.E wiring regulations.
External wiring must be correctly earthed, polarised and
in accordance with the relevant standards: Currently this
is BS 7671.
Heating System
The installation of the heat pump should follow best
practice as covered in the following:
BS 5449 Forced circulation hot water central heating
systems for domestic premises.
BS 15450 Heating systems in buildings – Design of heat
pump heating systems.
3Chapter 1 | Important informationNIBE™ F1145

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 12)
System flushed
System vented
Antifreeze
Level/Expansion vessel
Particle filter
Safety valve
Shut off valves
Circulation pump setting
Heating medium (page 13)
System flushed
System vented
Expansion vessel
Particle filter
Safety valve
Shut off valves
Circulation pump setting
Electricity (page 17)
Fuses heat pump
Fuses property
Outside sensor
Room sensor
Safety breaker
Earth circuit-breaker
Setting of emergency mode thermostat
Miscellaneous
Warranty
Benchmark checklist
NIBE™ F1145Chapter 1 | Important information4

Transport
F1145 should be transported and stored vertically in a
dry place. When being moved into a building, F1145 may
be leant back 45 °. Note! Can be tail heavy.
If the cooling module is pulled out and transported up-
right, F1145 can be transported on its back.
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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 66 for instructions about the separation.
Assembly
႑Position the heat pump on a firm base that can bear
its weight, preferably on a concrete floor or founda-
tion. Use the heat pump’s adjustable feet to obtain
a horizontal and stable set-up.
30 - 50 mm
႑The area where the heat pump 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 heat pump.
Approx 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 F1145 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.
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* 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™ F1145
2 Delivery and handling

Supplied components
Room sensorParticle filterOutside sensor
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O-ringsSafety valve
(0.3 MPa) (3 bar)
Level vessel
LEK
Conex connectorsAluminium tape
5,8kW
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2 x (ø28 x G25)
3 x (ø22 x G20)
Insulation tape 12 kW
5 x (ø28 x G25)
Tubes for sensorsTemperature sensor
Location
The kit of supplied items is placed in packaging on top
of the heat pump.
Removing the covers
Front cover
1
2
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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
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The side covers can be removed to facilitate the installa-
tion.
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™ F1145Chapter 2 | Delivery and handling6

General
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Pipe connections
Connection, heating medium flowXL 1
Connection, heating medium returnXL 2
Connection, brine inXL 6
Connection, brine outXL 7
Connection, hot water heaterXL 9
HVAC components
T&P valveFL 5
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
Pipe connection, heating medium flowWP 4
Sensors etc.
Outside sensorBT 1
Temperature sensors, heating medium flowBT 2
Electrical components
Display unitAA 4
AA4-XJ3 USB outlet (no function)
AA4-XJ4 Service outlet (No function)
Immersion heaterEB 1
SwitchSF 1
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.
7Chapter 3 | The heat pump designNIBE™ F1145
3 The heat pump design

Electrical cabinets
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Electrical components
Immersion heater cardAA 1
Base cardAA 2
Input circuit boardAA 3
Miniature circuit-breakerFA 1
Motor cut-out*FB 1
Temperature limiter/Emergency mode thermostatFD 1
Temperature limiter, compressorFD 2
* 1x230 V has auxiliary switch for motor cut-out.
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
NIBE™ F1145Chapter 3 | The heat pump design8

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1x230 V 5-12 kW
Electrical components
CapacitorCA 1
Motor cut-out*FB 1
Soft-starterQA 30
Terminal blockX 301
Terminal blockX 302
* 1x230 V has auxiliary switch for motor cut-out.
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
9Chapter 3 | The heat pump designNIBE™ F1145

Cooling section
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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™ F1145Chapter 3 | The heat pump design10

General
Pipe installation must be carried out in accordance with
current norms and directives. F1145 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).
F1145 is not equipped with external shut off valves; these
must be installed to facilitate any future servicing.
NOTE
The pipe system needs to be flushed out before
the heat pump is connected so that debris can-
not damage component parts.
NOTE
This installation is subject to building regulation
approval, notify the local Authority of intention
to install.
NOTE
Use only manufacturer’s recommended replace-
ment parts.
Symbol key
MeaningSymbol
Venting valve
Shut-off valve
Non-return valve
Shunt / shuttle valve
Safety valve
Trim valve
Tundish
Temperature sensor
Level vessel
Pressure gauge
P
Circulation pump
Particle filter
Auxiliary relay
Fan
Compressor
Heat exchanger
Hard water areas
Usually, there should not be a problem in installing F1145
in areas of hard water as the maximum operating temper-
ature is 60 °C.
System diagram
F1145 consists of heat pump, immersion heater, circula-
tion pumps and control system. F1145 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 temper-
ature has now been raised, is passed to the condenser
where it gives off its energy to the heating medium circuit
and, if necessary, to any docked water heater. If there is
a greater need for heating/hot water than the compressor
can provide there is an integrated immersion heater.
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Connection, heating medium flowXL 1
Connection, heating medium returnXL 2
Connection, brine inXL 6
Connection, brine outXL 7
Connection, hot water heaterXL 9
11Chapter 4 | Pipe connectionsNIBE™ F1145
4 Pipe connections

Dimensions and pipe connec-
tions
620
600
560
70
1475
725* 725*
25-50
25
55
130
460
535
405
440
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Pipe dimensions
12
kW
5-8
kW
Connection
28(mm)(XL6)/(XL7) Brine in/out ext Ø
2822(mm)(XL1)/(XL2) Heating medium
flow/return ext Ø
2822(mm)(XL9) Connection, hot water heater
ext Ø
Brine side
Collector
Rock heat, recom-
mended active
drilling depth (m)
Surface soil heat,
recommended col-
lector length (m)
Type
70-90200-3005kW
120-145325-2x2508kW
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 underfloor
heating).
Max length per coil for the collector should not exceed
400 m.
In those cases where it is necessary to have several collect-
ors, these should be connected in parallel with the pos-
sibility 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.
Anti freeze must be mixed according to manufacturer's
instructions to ensure frost protection and should be
checked using a refractometer.
NOTE
Ensure that cleaning agent has been removed
from the entire system before the anti-freeze is
added.
NIBE Energy Systems Limited recommends water treat-
ments (supplied by e.g. Fernox and Sentinel) specifically
designed for heat pumps.
* Can be angled for side connection.
NIBE™ F1145Chapter 4 | Pipe connections12

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).
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 prevent
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.
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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 F1145 and for ex-
ample radiators, underfloor heating/cooling, fan con-
vectors 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.
Before installing the heat pump in an existing system, it
is important that the system is properly flushed through.
Even if the heat pump is to be installed in a new system,
the heat pump and system should be flushed.
NOTE
Ensure that cleaning agent has been removed
from the entire system before adding inhibitor.
After flushing an inhibitor should be used for long-term
anti-corrosion protection.
NIBE Energy Systems Limited recommends water treat-
ments (supplied by e.g. Fernox and Sentinel) specifically
designed for heat pumps.
T
13Chapter 4 | Pipe connectionsNIBE™ F1145

Hot water heater
Connecting the hot water heater
NOTE
If F1145 is not docked to a water heater or if it
is to work with fixed condensing, the connection
for the water heater (XL9) must be plugged.
႑Any docked hot water heater must be fitted with ne-
cessary set of valves.
႑The mixing valve must be installed if the setting is
changed so that the temperature can exceed 60 °C.
The setting is made in menu 5.1.1 (page 58)
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.
Caution
Hot water production is activated in menu 5.2
or in the start guide.
Fixed condensing
If F1145 is to work towards the water heater with fixed
condensing you must connect an external flow sensor
(BT25) according to the description on page 20. In addi-
tion, you must perform the following menu settings.
Menu setting (local vari-
ations may be required)
Menu
50 °C1.9.3 - min. flow line temp.
same as above5.1.2 - max flow line temper-
ature
3°C5.1.3 - max diff flow line
temp., max diff compressor
2°C5.1.3 - max diff flow line
temp., max diff addition
intermittent5.1.10 - op. mod heat med
pump
manual4.2 - op. mode
Docking alternatives
F1145 can be connected in several different ways, some
of which are shown below.
Further option information is available at www.nibe.co.uk
and in the respective assembly instruction for the access-
ory used. See page 72 move the list of the accessories
that can be used to F1145.
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.
T
UKV
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.
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Avluft
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NIBE™ F1145Chapter 4 | Pipe connections14

Free cooling
The installation can be supplemented with fan convectors,
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.
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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.
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UKV
Two or more climate systems
When more than one climate system, with a lower tem-
perature, is to be heated up, the following connection
can be used. The shunt valve lowers the temperature to,
for example, the under floor heating system.
The ECS 40/ECS 41 accessory is required for this connec-
tion.
T
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 23
for more information about connecting a ground water
pump.
15Chapter 4 | Pipe connectionsNIBE™ F1145

Pool
Charging of the pool is controlled by the pool sensor. In
the case of low pool temperatures, the shuttle valve re-
verses direction and opens towards the pool exchanger.
The POOL 40 accessory is required for this connection.
T
Pool
NIBE™ F1145Chapter 4 | Pipe connections16

General
All electrical equipment, except the outdoor sensors,
room sensors and the current sensors are ready connected
at the factory.
႑Disconnect the heat pump before insulation testing
the house wiring.
႑If the building is equipped with an earth-fault breaker,
F1145 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 connec-
tions 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 F1145, 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 carried
out under the supervision of a qualified electri-
cian. Cut the current with the circuit breaker
before carrying out any servicing. Electrical in-
stallation and wiring must be carried out in ac-
cordance with the stipulations in force.
Miniature circuit-breaker
The heat pump 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.
Temperature limiter, compressor
The temperature limiter (FD2) cuts the current supply to
the soft starter if the temperature rises above 88 °C and
is manually reset.
Resetting
The temperature limiter (FD2) is accessible behind the
front cover. Reset the temperature limiter by pressing the
button (FD2-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 con-
trol knob to horizontal position.
Caution
Check the miniature circuit-breaker, temperature
limiter and motor protection breaker. They may
have tripped during transportation.
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17Chapter 5 | Electrical connectionsNIBE™ F1145
5 Electrical connections

Accessibility, electrical connection
The plastic cap of the electrical boxes is opened using a
screwdriver.
NOTE
The door to the input card circuit board is
opened using a Torx 20 screwdriver.
Removing the cover, input circuit board
1. Unscrew the screws and angle out the cover.
LEK
2. Pull off the cover.
LEK
Removing the hatch, electrical cabinet
1. Disconnect the contacts.
LEK
2. Unscrew the screws and angle out the cover.
LEK
3. Pull off the cover.
LEK
NIBE™ F1145Chapter 5 | Electrical connections18