Nibe 1127-2 User guide

Installer manual
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NIBE™ F1126
Ground source heat pump
IHB GB 1127-2
031792
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A detailed explanation of the button functions can be found on page 32.
How to scroll through menus and make different settings is described on page 34.
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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 36.
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To temporarily increase the amount of hot water (if a hot water heater is installed to your F1126), 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 40.
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 53 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 13
Docking alternatives 14
5 Electrical connections 16
General 16
Connections 18
Settings 19
Optional connections 21
Connecting accessories 22
6 Commissioning and adjusting 23
Preparations 23
Filling and venting 23
Start guide 24
Post adjustment and venting 29
7 Control - Introduction 32
Display unit 32
Menu system 33
8 Control - Menus 36
Menu 1 - INDOOR CLIMATE 36
Menu 2 - HOT WATER 40
Menu 3 - INFO 41
Menu 4 - HEAT PUMP 42
Menu 5 - SERVICE 44
9 Service 47
Service actions 47
10 Disturbances in comfort 53
Info-menu 53
Manage alarm 53
Troubleshooting 53
11 Accessories 55
12 Technical data 56
Dimensions and setting-out coordinates 56
Technical specifications 57
Electrical circuit diagram 60
Item register 65
1Table of Contents |NIBE™ F1126

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.
Marking
F1126 is CE marked and fulfils IP21.
The CE marking means that NIBE ensures that the product
meets all regulations that are placed on it based on relev-
ant EU directives. The CE mark is obligatory for most
products sold in the EU, regardless where they are made.
IP21 means that the product can be touched by hand,
that objects with a diameter larger than or equivalent to
12.5 mm cannot penetrate and cause damage and that
the product is protected against vertically falling drops.
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.
NIBE™ F1126Chapter 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 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 16)
Fuses heat pump
Fuses property
Outside sensor
Safety breaker
Earth circuit-breaker
Setting of emergency mode thermostat
Miscellaneous
Guarantee submitted
3Chapter 1 | Important informationNIBE™ F1126
..........................................................................................................................................................................................................................................................................................................................................................................................
.

Contact information
KNV Energietechnik GmbH, Gahberggasse 11, 4861 SchörflingAT
Tel: [phone] Fax: [phone] E-mail: [email protected] www.knv.at
NIBE Wärmetechnik AG, Winterthurerstrasse 710, CH-8247 FlurlingenCH
Tel: [phone] Fax: [phone] E-mail: [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: [email protected] www.nibe.de
Vølund Varmeteknik A/S, Member of the Nibe Group, Brogårdsvej 7, 6920 VidebækDK
Tel: [phone] Fax: [phone] E-mail: [email protected] www.volundvt.dk
NIBE Energy Systems OY, Juurakkotie 3, 01510 VantaaFI
Puh: 09-274 697 0 Fax: [phone] E-mail: [email protected] www.nibe.fi
NIBE Energy Systems Ltd, 3C Broom Business Park, Bridge Way, Chesterfield S41 9QGGB
Tel: [phone] Fax: [phone] E-mail: [email protected] www.nibe.co.uk
NIBE Energietechniek B.V., Postbus 2, NL-4797 ZG WILLEMSTAD (NB)NL
Tel: [phone] Fax: [phone] E-mail: [email protected] www.nibenl.nl
ABK AS, Brobekkveien 80, 0582 Oslo, Postadresse: Postboks 64 Vollebekk, 0516 OsloNO
Tel. sentralbord: +47 02320 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: [email protected] 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: [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™ F1126Chapter 1 | Important information4

Transport
F1126 should be transported and stored vertically in a
dry place. When being moved into a building, F1126 may
be leant back 45 °. Note! Can be tail heavy.
If the cooling module is pulled out and transported up-
right, F1126 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 49 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 F1126 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™ F1126
2 Delivery and handling

Supplied components
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Particle filterLevel vesselOutside sensor
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Temperature sensorO-ringsSafety valve
(0.3 MPa) (3 bar)
Conex connectors
6-8 kW
2 x (ø28 x G25)
3 x (ø22 x G20)
11 kW
5 x (ø28 x G25)
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™ F1126Chapter 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
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™ F1126
3 The heat pump design

Electrical cabinets
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Electrical components
Immersion heater cardAA 1
Base cardAA 2
Miniature circuit-breakerFA 1
Motor cut-outFB 1
Temperature limiter/Emergency mode thermostatFD 1
Terminal blockX1
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
NIBE™ F1126Chapter 3 | The heat pump design8

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3x400 V 6-11 kW
Electrical components
Soft-start cardAA 10
Motor cut-outFB 1
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
9Chapter 3 | The heat pump designNIBE™ F1126

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™ F1126Chapter 3 | The heat pump design10

General
Pipe installation must be carried out in accordance with
current norms and directives. F1126 can operate with a
return temperature of up to 56 °C and an outgoing
temperature from the heat pump of 70 (63 °C with only
the compressor).
F1126 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.
Symbol key
MeaningSymbol
Venting valve
Shut-off valve
Non-return valve
Shunt / shuttle valve
Safety valve
Trim valve
Temperature sensor
Level vessel
Pressure gauge
P
Circulation pump
Particle filter
Auxiliary relay
Fan
Compressor
Heat exchanger
System diagram
F1126 consists of heat pump, immersion heater, circula-
tion pumps and control system. F1126 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™ F1126
4 Pipe connections

Dimensions and pipe connec-
tions
605
600
560
70
1475
725* 725*
25-50
25
55
130
460
535
405
440
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Pipe dimensions
11
kW
6-8
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
90-110250-4006kW
120-145325-2x2508kW
180-2102x250-2x35011 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.
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.
* Can be angled for side connection.
NIBE™ F1126Chapter 4 | Pipe connections12

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 F1126 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.
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Hot water heater
Connecting the hot water heater
NOTE
If F1126 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 44)
13Chapter 4 | Pipe connectionsNIBE™ F1126

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 F1126 is to work towards the water heater with fixed
condensing you must connect an external flow sensor
(BT25) according to the description on page 21. 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
F1126 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 55 for a list of the accessories
that can be used with F1126.
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.
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UKV
NIBE™ F1126Chapter 4 | Pipe connections14

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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Free cooling
The installation can be supplemented with fan convectors,
for example, in order to allow connections for free cool-
ing.
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
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. This docking
alternative requires the EXC 40 accessory.
15Chapter 4 | Pipe connectionsNIBE™ F1126

General
All electrical equipment except for the outdoor temperat-
ure sensors has been connected at the factory.
႑Disconnect the heat pump before insulation testing
the house wiring.
႑If the building is equipped with an earth-fault breaker,
F1126 should be equipped with a separate one.
႑If a miniature circuit breaker is used this should have
at least motor characteristic “C”. See page 57 for
fuse size.
႑For the heat pump wiring diagram, see page 60.
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 F1126, 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.
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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.
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.
NIBE™ F1126Chapter 5 | Electrical connections16
5 Electrical connections

Accessibility, electrical connection
The plastic cap of the electrical boxes is opened using a
screwdriver.
NOTE
The cover for the terminal block for soft inputs
is opened using a Torx 20 screwdriver.
Removing the cover, terminal block
1. Unscrew the screws and angle out the cover.
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2. Pull off the cover.
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Removing the hatch, electrical cabinet
1. Disconnect the contacts.
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2. Unscrew the screws and angle out the cover.
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3. Pull off the cover.
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17Chapter 5 | Electrical connectionsNIBE™ F1126

Cable lock
Use a suitable tool to release/lock cables in the heat pump
terminal blocks.
2
1
2
3
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3
4
1
2
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Connections
NOTE
To prevent interference, unscreened communic-
ation and/or sensor to external connections
cables must not be laid closer than 20 cm to
high voltage cable when cable routing.
Power connection
F1126 must be installed via an isolator switch with a
minimum breaking gap of 3mm. Minimum cable area
must be dimensioned according to the fuse rating used.
Supplied cable for incoming electricity is connected to
terminal block X1 on the immersion heater card (AA1).
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Connection 3x400V
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PE1
L1 1 L2 L3PE0N
NOTE
F1126-11 contains scroll compressor, which
means that it is important that electrical connec-
tions are made with the correct phase sequence.
With the incorrect phase sequence, the com-
pressor does not start and an alarm is displayed.
If separate supply to the compressor and immersion
heater is required, see section "Switch for external
blocking of addition and/or compressor" on page 21.
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".
Connecting external operating voltage for
the control system
NOTE
Mark up any junction boxes with warnings for
external voltage.
If you wish to connect external operating voltage for the
control system to F1126 on the immersion heater circuit
board (AA1) the edge connector at AA1:X2 must be
moved toAA1:X9 (as illustrated).
Operating voltage (1x230V+N+PE) is connected to
AA1:X11 (as illustrated).
1 2 3 4 5 6
ON
L1 1 L2 L3PE
PE
0N
NL
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NIBE™ F1126Chapter 5 | Electrical connections18