Nibe F1155PC User manual

IHB EN 2008-7
331168
INSTALLATION MANUAL
Ground source heat pump
NIBE F1155PC

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 33.
How to scroll through menus and make different settings is described on page 35.
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 (if a hot water heater is installed to your F1155PC), 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
93 The heat pump design
9General
11Distribution boxes
12Cooling section (EP14)
134 Pipe connections
13General
14Dimensions and pipe connections
14Brine side
15Heating medium side
15Cold and hot water
16Docking alternatives
185 Electrical connections
18General
20Connections
22Settings
23Optional connections
26Connecting accessories
286 Commissioning and adjusting
28Preparations
28Filling and venting
28Start-up and inspection
30Setting the cooling/heating curve
337 Control - Introduction
33Display unit
34Menu system
378 Control - Menus
37Menu 1 - INDOOR CLIMATE
37Menu 2 - HOT WATER
38Menu 3 - INFO
38Menu 4 - HEAT PUMP
39Menu 5 - SERVICE
509 Service
50Service actions
5710 Disturbances in comfort
57Manage alarm
57Troubleshooting
6011 Accessories
6312 Technical data
63Dimensions and setting-out coordinates
64Electrical data
65Technical specifications
68Energy labelling
72Item register
75Contact information
3Table of ContentsNIBE F1155PC
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.
F1155PC 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.
IP21
Danger to person or machine.
!
Read the User Manual.
NIBE F1155PCChapter 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 F1155PC

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.
DateSignatureNotesDescription
✔
Brine (page 14)
System flushed
System vented
Antifreeze
Level/Expansion vessel
Filterball (particle filter)
Safety valve
Shut off valves
Circulation pump setting
Heating medium (page 15)
System flushed
System vented
Expansion vessel
Filterball (particle filter)
Safety valve
Shut off valves
Circulation pump setting
Electricity (page 18)
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 thermostat
NIBE F1155PCChapter 1 | Important information6

Transport
F1155PC should be transported and stored vertically in
a dry place. When being moved into a building, F1155PC
may be leant back 45 °.
Ensure that F1155PC has not been damaged during
transport.
Caution
The product can be tail heavy.
If the cooling module is pulled out and transported up-
right, F1155PC can be transported on its back.
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 53 for instructions about the separation.
Assembly
• Place F1155PC 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 F1155PC, 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
F1155PC 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 vibration being propagated.
(50) (50)
800
*
*
* A normal installation needs 300 – 400 mm (any side) for connection
equipment, valves and electrical equipment.
7Chapter 2 | Delivery and handlingNIBE F1155PC
2 Delivery and handling

Supplied components
LEK
LEK
LEK
Current sensor1
3 x
Room sensor
1 x
Outside sensor
1 x
Temperature
sensor
3 x
O-rings
8 x
LEK
Safety valve
0.3 MPa (3 bar)1
1 x
LEK
Insulation tape
1 x
LEK
Level vessel1
1 x
Tubes for sensors
3 x
Filterball
1 x G1
1 x G3/4
Compression ring
couplings
2 x (ø28 x G25)
3 x (ø22 x G20
LEK
Aluminium tape
1 x
1Not Italy and the DACH countries.
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 F1155PCChapter 2 | Delivery and handling8

General
UN
PF1
QN10
BT2
EB1
UB1
QM34
QM31
XL1
XL6 XL7
XL2XL9
UB3
AA4
SF1
AA4-XJ4
AA4-XJ3
UB2
QM32
QM33
PF2
W130
EP14
VIEW FROM BEHIND
BF1
BF1
9Chapter 3 | The heat pump designNIBE F1155PC
3 The heat pump design

PIPE CONNECTIONS
Connection, heating medium flowXL1
Connection, heating medium returnXL2
Connection, brine inXL6
Connection, brine outXL7
Connection, hot water heaterXL9
HVAC COMPONENTS
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
**Only heat pumps with energy meter
* Not illustrated
ELECTRICAL COMPONENTS
Display unit
AA4-XJ3 USB socket
AA4-XJ4 Service outlet (No function)
AA4
Immersion heaterEB1
SwitchSF1
Network cable for NIBE UplinkW130
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.
NIBE F1155PCChapter 3 | The heat pump design10

Distribution boxes
F1255
FA1 AA7 FD1
UN
FC1
FQ10
AA23 AA2AA1 AA3AA7
ELECTRICAL COMPONENTS
Immersion heater cardAA1
Base cardAA2
Input circuit boardAA3
Extra relay circuit boardAA7
Communication boardAA23
Miniature circuit-breakerFC1
Temperature limiter/Emergency mode thermostatFQ10
11Chapter 3 | The heat pump designNIBE F1155PC

Cooling section (EP14)
1 x 230 V, 3 x 400 V, 6 kW
LEK LEK
BT12
EP6
BT3
GP1
GP2
QM2
QM1
AA100
BT10
BT11
QN18
1 x 230 V, 3 x 400 V, 6 kW
LEK LEK
EP2
BT14QA40
BT17
CA1
RA1
BT15
BP1
BP2
EB10
EP1
GQ10
HS1
XL20
QN1
XL21
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
InverterQA40
COOLING COMPONENTS
EvaporatorEP1
CondenserEP2
Heat exchanger, coolingEP6
CompressorGQ10
Drying filterHS1
Expansion valveQN1
Mixing valve, coolingQN18
NIBE F1155PCChapter 3 | The heat pump design12

General
Pipe installation must be carried out in accordance with
current norms and directives. F1155PC 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).
F1155PC 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.
NOTE
The climate system must be adjusted for both
heating and cooling operation.
SYMBOL KEY
SYSTEM DIAGRAM
F1155PC consists of heat pump, immersion heater, cir-
culation pumps and control system. F1155PC is connec-
ted 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 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.
The brine can also be circulated via a mixing valve to a
heat exchanger. There the brine cools the heating sys-
tem's water so that comfort cooling can be maintained
during the hotter periods of the year.
KBinVBf VBr KBut
VV
XL1 XL6 XL7 XL2XL9
KBinVBf VBrVV KBut
Connection, heating medium flowXL1
Connection, heating medium returnXL2
Connection, brine inXL6
Connection, brine outXL7
Connection, hot water heaterXL9
13Chapter 4 | Pipe connectionsNIBE F1155PC
4 Pipe connections

Dimensions and pipe
connections
620
600
560
70
1475
725* 725*
25-50
25
55
130
460
535
405
440
620
600
560
70
1475
725* 725*
25-50
25
55
130
460
535
405
440
XL1 XL6 XL7XL9 XL2
PIPE DIMENSIONS
Connection
28(mm)(XL6)/(XL7) Brine in/out ext Ø
22(mm)(XL1)/(XL2) Heating medium flow/return
ext Ø
22(mm)(XL3)/(XL4) Cold/hot water Ø
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.
* Can be angled for side connection.
NIBE F1155PCChapter 4 | Pipe connections14

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 a shut off valve for outgoing brine as close to
the heat pump as possible.
• Fit the enclosed filterball 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 F1155PC
and for example radiators, underfloor heating/cooling,
fan convectors etc.
•Install all necessary safety devices, shut-off valves (as
close to the heat pump as possible) and the enclosed
filterball.
• 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 THE HOT WATER HEATER
NOTE
If F1155PC is not docked to a water heater or
if it is to work with fixed condensing, the con-
nection for the water heater (XL9) must be
plugged.
• Fit shut-off valve, non-return valve and safety valve as
illustrated.
• The safety valve must have max. 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.
• Hot water production is activated in the start guide or
in menu 5.2.
XL1
XL2
15Chapter 4 | Pipe connectionsNIBE F1155PC

FIXED CONDENSING
If F1155PC is to work towards a water heater with fixed
condensing, you must connect external supply temper-
ature sensor (BT25) according to the description on page
21. In addition, you must make the following menu
settings.
Menu setting (local vari-
ations may be required)
Menu
Desired temperature in the
tank.
1.9.3.1 - min. flow line
temp. heating
Desired temperature in the
tank.
5.1.2 - max flow line temper-
ature
intermittent5.1.10 - op. mod heat med
pump
manual4.2 - op. mode
Docking alternatives
F1155PC 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 60 for a list of the accessories that can
be used with F1155PC.
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.
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 26
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
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
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
NIBE F1155PCChapter 4 | Pipe connections16

POOL
With the POOL 40 accessory, you can heat the pool
with your heat pump.
During pool heating, the heating medium circulates
between the F1155PC 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
17Chapter 4 | Pipe connectionsNIBE F1155PC

General
All electrical equipment, except the outdoor sensors,
room sensors and the current sensors are ready connec-
ted at the factory.
• Disconnect the heat pump before insulation testing
the house wiring.
• F1155PC is not reconnectable between 1-phase and
3-phase.
• If the building is equipped with an earth-fault breaker,
F1155PC should be equipped with a separate one.
• If a miniature circuit breaker is used this should have
at least motor characteristic “C”. See page 65 for fuse
size.
• Electrical wiring diagrams for the heat pump, see
separate installation handbook for electrical wiring
diagrams.
•Communication and sensor cables to external connec-
tions must not be laid close to high current cables.
• The 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.
•When cable routing in F1155PC, 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.
Components in the product could 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 carried
out in accordance with the stipulations in force.
NOTE
Check the connections, main voltage and phase
voltage before the machine is started, to pre-
vent damage to the heat pump electronics.
MINIATURE CIRCUIT-BREAKER
The heat pump operating circuit and some of its internal
components are internally fused by a miniature circuit
breaker (FC1).
TEMPERATURE LIMITER
The temperature limiter (FQ10) cuts the power to the
electric additional heat if the temperature exceeds 89°C
and is reset manually.
Resetting
The temperature limiter (FQ10) is accessed behind the
front cover. Reset the temperature limiter by pressing
the button (FQ10-SF2) using a small screwdriver.
ACCESSIBILITY, ELECTRICAL CONNECTION
The plastic cap of the electrical boxes is opened using
a screwdriver.
NOTE
The cover for the input card is opened without
a tool.
NIBE F1155PCChapter 5 | Electrical connections18
5 Electrical connections

Removing the cover, input circuit board
1. Unscrew the screws and angle out the cover.
LEK
LEK
LEK
LEK
2. Pull off the cover.
LEK
LEK
LEK
LEK
Removing the hatch, electrical cabinet
1. Disconnect the contacts.
LEK
2. Unscrew the screws and angle out the cover.
LEK
LEK
LEK
LEK
3. Pull off the cover.
LEK
LEK
LEK
LEK
CABLE LOCK
Use a suitable tool to release/lock cables in the heat
pump terminal blocks.
LEK
1
1
2
2
3
3
1
2
3
3
4
1
2
LEK
1
1
2
2
3
3
1
2
3
3
4
1
2
1
2
19Chapter 5 | Electrical connectionsNIBE F1155PC

Connections
NOTE
To prevent interference, unscreened commu-
nication and/or sensor to external connections
cables must not be laid closer than 20 cm to
high voltage cable when cable routing.
POWER CONNECTION
F1155PC must be installed with a disconnection option
on the supply cable. Minimum cable area must be sized
according to the fuse rating used. Enclosed cable for
incoming supply electricity is connected to terminal block
X1 on the immersion heater board (AA1). All installations
must be carried out in accordance with current norms
and directives.
AA1-X1
NOTE
F1155PC is not reconnectable between 1-
phase and 3-phase, neither is it reconnectable
between 3x230V and 3x400V.
F1155PC is not reconnectable between 1-
phase and 3-phase.
Connection 1x230V
PE1
0 L1 1PEN
AA1-X1
Connection 3x400V
AA1-X1
PE1
L1 1 L2 L3PE0
N
If a separate supply to the compressor and electric
heater is wanted, see section "External blocking of
functions" on page 26.
TARIFF CONTROL
If the voltage to the immersion heater and/or the com-
pressor disappears during a certain period, there must
also be blocking via the AUX-input, see "Connection
options - Possible selection for AUX inputs" page. 26
CONNECTING EXTERNAL OPERATING
VOLTAGE FOR THE CONTROL SYSTEM
NOTE
Only applies to power connection of 3x400V.
NOTE
Mark up any junction boxes with warnings for
external voltage.
If you wish to connect external operating voltage for the
control system to F1155PC on the immersion heater
circuit board (AA1) the edge connector at AA1:X2 must
be moved toAA1:X9 (as illustrated).
Operating voltage (1x230V ~ 50Hz) is connected to
AA1:X11 (as illustrated).
1 2 3 4 5 6
ON
L1 1 L2 L3PE
PE
0N
NL
1x230V+N+PE
1x230V+N+PE operating voltage
AA1
AA1-X8
AA1-X2
AA1-X9
AA1-X11
CONNECTING SENSORS
AA3-X6
Connect the sensor(s) to
terminal X6 on input
board(AA3) according to
the instructions below.
NIBE F1155PCChapter 5 | Electrical connections20