Nibe FIGHTER 1240 User manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS
NIBE FIGHTER 1240
230 V UK
MOS GB 0748-4
FIGHTER 1240
031119
LEK

LEK LEK
1
2
LEK LEK

Contents 1
FIGHTER 1240
General
Concise product description ................................. 2
Setting table ........................................................ .. 2
System description
Principle of operation ............................................ 3
Front panel
Layout ................................................................... 4
Explanation ........................................................... 4
Settings
General ................................................................. 6
Basic setting ......................................................... 6
Changing the room temperature ........................... 6
Setting with diagrams ............................................ 7
Heating curve offset -2 ......................................... 7
Heating curve offset 0 .......................................... 7
Heating curve offset +2 ........................................ 7
Heating ................................................................. 8
Hot water ............................................................... 8
Standby mode ....................................................... 8
Maintenance routines
Checking the safety valves ................................... 9
General information for the installer
Transport and storage ......................................... 10
Installation ........................................................... 10
Guideline values for collectors ............................. 10
Inspection of the installation ................................ 10
Additional heat only (electric boiler mode) ........... 10
Brine pump ........................................................... 10
Electric anode (enamel) ...................................... 10
Hard water areas .................................................. 10
Pipe connections
General ................................................................ 11
Pipe connection (collector) .................................. 12
Safety valves ........................................................ 13
Pipe connection (heating medium) ...................... 13
Filling the heating system ..................................... 13
Pipe connections (water heater) .......................... 13
Free cooling ......................................................... 14
Ventilation recovery ............................................. 14
Pump capacity diagrams, heating medium side .. 15
Pump capacity diagrams, collector side .............. 15
Electrical connection
Connection .......................................................... 16
Connection on delivery 230 V -5 ......................... 17
Connection on delivery 230 V -8, -12 .................. 18
Max hot water temperature .................................. 19
Max phase current................................................ 19
External contacts.................................................. 20
Connecting the outside temperature sensor ........ 21
Alarm/alarm outputs ............................................. 21
Soft-start relay ..................................................... 21
Commissioning and adjusting
Preparations ........................................................ 22
Filling and venting the collector system ............... 22
Filling the heating medium system ...................... 22
Internal air vent valve, brine ................................ 22
Start-up and inspection ....................................... 23
Readjusting, heat medium side ........................... 23
Readjusting, collector side .................................. 23
Emptying the water heater ................................... 23
Control
General................................................................. 24
Key lock ................................................................ 24
Quick movement................................................... 24
Changing parameters........................................... 25
Menu tree ............................................................. 26
Main menus.......................................................... 30
Hot water temperature.......................................... 31
Flow temperature ................................................. 32
Flow temperature system 2 ................................. 34
Outdoor temperature ............................................ 35
Brine in / out temperature..................................... 35
Room temperature / Settings................................ 37
Clock..................................................................... 37
Other settings ....................................................... 39
Service menus
Settings additional heat ........................................ 41
Operating settings ................................................ 42
Quick start ............................................................. 44
TEST Force driven operation ............................... 44
Alarm log .............................................................. 45
Dealing with malfunctions
Alarm indications on the display .......................... 46
Low hot water temperature or no hot water ......... 48
Low room temperature ........................................ 48
High room temperature......................................... 48
Draining, heat medium side ................................. 49
Draining, collector side ......................................... 49
Helping the circulation pump to start ................... 49
Component placement
Component positions ........................................... 50
Component positions 230 V -5 ............................. 51
Component positions 230 V -8, -12...................... 51
List of components
List of components ............................................... 52
Dimensions
Dimensions and setting-out coordinates .............. 53
Accessories
Accessories ......................................................... 54
Enclosed kit .......................................................... 55
Technical specifications
Technical specifications 230 V ............................. 56

General
FIGHTER 1240
2
In order to get the ultimate benefit from your heat pump FIGHTER 1240 you should read through
this Installation and Maintenance Instruction.
FIGHTER 1240 is a heat pump central for the production of heating and domestic hot water in
detached and terrace houses. Soil, rock or lakes can be used as the heat source.
FIGHTER 1240 is a Swedish made quality product offering a long life span and safe operation.
For the installation engineer: Please, hand over to the home owner his manual after finalised
installation.
Completed by the installer when the heat pump is installed
Installation date
The serial number (95) , should always be stated with all corre-
spondence with NIBE.
______________
FIGHTER 1240- __
Installation engineers
The type of brine – Mixing proportion/freezing point
Active drilling depth/collector length
Commissioning checks
Brine temperature (in/out)____ / ____ Pump setting ___
(Nominal temperature diff 2 - 5 °C)
Temperature heat medium (supply/return)____ / ____ Pump setting ___
(Nominal temperature diff 5 - 10 °C)
Settings
Date ________ Signed ____________________________
Menu Factory
settings
1.4 Start time.HW ............. 47
1.5 Stop temp.HW .............. 54
1.6
Stop Temp. XHW ............. 60
1.8
Interval XHW .............. 14
2.1 Curve coefficient........... 9
2.2 Offset heating curve ..... 5
2.3
Flow temp./MIN .............. 15
2.4
Flow temp./MAX .............. 55
2.7
Return temp./MAX ......... 53
Position Factory
settings
100
Fuse ........ 20
101 Max electr. output ...... C
102
Max boiler temp ....... C (65)
Anti-corrosion
Enamel Stainless steel Copper
Maximum water
supply pressure
Immersion heater R50 / 6000 W / 230 V
Expansion vessel, tap water,
charge pressure
Expansion vessel, heating water,
charge pressure
Pressure reduction valve, setting 3,5 bar
5 kW 485 kg
Mass, unit, filled with water 8 kW 505 kg
12 kW 515 kg
Manufacter:
NIBE AB
Box 14
Järnvägsgatan 40
285 21 MARKARYD
SWEDEN
Operating pressure, tap water
Volume, water heater 160 litres
Maximum primary working
pressure (heating side)
Set opening pressure of
temperature and pressure valve
Set opening pressure relief valve 6 bar
Set opening, temperature limiter,
immersion heater
Heating up time from 5 kW 3 h 0 min
15°C to 65 °C 8 kW 2 h 40 min
12 kW 2 h 15 min
Re-heating time to 65 °C 5 kW 1 h 47 min
70% of total volume 8 kW 1 h 41 min
12 kW 1 h 38 min
Set opening, temperature limiter,
compressor
16 bar
6 bar
3,5 bar
0,5 bar
7 bar
2,5 bar
88 °C
88 °C

FIGHTER 1240 consists of a heat pump, water heater,
electrical module, circulation pumps and a control sys-
tem. FIGHTER 1240 is connected to the collector and
heating medium circuits.
The heat from the heat source (rock, soil, lake) is taken
up via a closed collector system in which a mixture of
water and antifreeze circulates. Groundwater can also
be used as a heat source, but this requires an inter-
vening heat exchanger.
The brine emits its heat to the refrigerant in the heat
pump’s evaporator. It then vaporises and is com-
pressed in the compressor. The refrigerant, the tem-
perature of which 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. After the condenser there is a built-in electrical
module which cuts in if there is a high demand.
System description 3
FIGHTER 1240
Principle of operation
Heating medium
pump
Immersion
heater
Three-way valve
Heating medium
(VB), flow
Heating medium
(VB), return
Evaporator
Cooling medium pump
Compressor
Condenser
HW CW
Expansion valve
Refrigerating module
Double jacket
Cooling medium (KB) in
Cooling medium (KB) out
Water heater
Heating
return
Heating
flow
The heating medium side and
the hot water side must be fit-
ted with the necessary safety
equipment in accordance with
the applicable regulations.

Front panel
FIGHTER 1240
4
A BI II III I II
50.0°C
Varmvattentemperatur
13.43
1.0 P
A
Switch
with three positions 1-0- :
1Normal mode. All control functions connect-
ed.
0 Boiler completely switched off.
Standby. Only the circulation pump and
immersion heater step 2 are operational.
The switch must not be turned to 1 or “ ”
before filling the boiler with water.
Display
Switch
Left
keypad
Heating
curve offset
Display First row:
Compressor symbol
Indicates when the compressor is opera-
tional.
Supplement symbol
Indicates when immersion heater is con-
nected. The line indicates which power
step/steps are currently connected.
I Step 1 is connected.
II Step 2 is connected.
I II Steps 1+2 are connected.
Layout
B
A
D
E
Right
keypad
Hot water symbol
Tap is shown when the heat pump charges
the hot water.
A is shown when a temperature increase is
in progress.
B is shown when a time based temperature
increase is in progress, for example, peri-
odic.
Circulation pump symbol
I Shown when the circulation pump is
operational.
II Shown when circulation pump 2 is
operational (the accessory ESV 21 is
required).
Heating system symbols
Shown when house heating is in progress.
Second row: Value of the current parameter.
Third row: Description of current display param-
eter. Hot water temp is normally shown.
F
B
Explanation
A
I II III
A B
I II
A
Status lamp
C

Front panel 5
FIGHTER 1240
Fourth row: Shows menu numbers, key lock,
clock symbol and time
Left keypad
Right keypad
Offset heating curve
E
D
F
Operating mode
This button is used to set the required
operating mode with regard to permit-
ting/blocking the circulation pump and
additional energy. The change does not
need to be confirmed with the enter but-
ton.
The different operating modes are:
Auto mode: FIGHTER 1240 automatically selects the
operating mode by taking the outdoor temperature
into account. The circulation pump and the immersion
heater are permitted to run as needed.
Summer mode: Only production of hot water using
FIGHTER 1240. The circulation pump and immersion
heater are blocked. However, when Extra hot water is
activated the immersion heater is connected.
Spring/Autumn mode: Production of heating and hot
water using FIGHTER 1240. The circulation pump is
operational. The immersion heater is disabled. How-
ever, when Extra hot water is activated the immersion
heater is connected.
Only additional heat: Compressor and brine pump
blocked. The function can be activated/deactivated by
pressing the “operating mode button” for 7 seconds.
The current operating mode is shown on the display
when the button is pressed and the mode changes
when you continue to press the button. The display
returns to the normal display mode once the enter but-
ton is pressed.
In alarm mode the operating mode changes to winter
mode and additional heat engages.
Extra hot water
The Extra hot water function is activat-
ed using this button. The change does
not need to be confirmed with the enter
button.
A: Means that the hot water temperature is increased
to 60 °C (adjustable). The temperature then returns to
the normal value.
When Acomes on the function is activated.
When Agoes out the function is deactivated.
Press once to give extra hot water for 3 hours.
Press twice to give extra hot water for 6 hours.
Press three times to give extra hot water for 12 hours.
Press four times to give extra hot water for 24 hours.
Press five times to deactivate the function.
Plus button
This button is used to scroll through the
menu system (forwards) or increase
the value of the selected parameter.
See the section Control — General.
Minus button
This button is used to scroll through
the menu system (backwards) or lower
the value of the selected parameter.
See the section Control — General.
Enter button
This button is used to select a lower
menu in the menu system, to activate a
parameter change as well as confirm a
parameter change.
See the section Control — General.
This knob is used to change the heating
curve's parallel offset and in doing so
the room temperature.Turning clockwise
increases the room temperature. When
the knob is turned menu 2.0 is shown
on the display and the value for the cal-
culated flow temperature changes.
No function.
B
A key lock can be activated in the main
menus by simultaneously pressing the
plus and the minus buttons. The key
symbol will then be shown on the display.
The same procedure is used to deacti-
vate the key lock.
The symbol becomes visible when a tim-
er function is selected, for example, peri-
odic lowering of the flow or time setting
for extra hot water.
The symbol becomes visible when pool
heating is in progress.
P
Status lamp
C
During normal operation, the status
lamp lights green. In the event of an
alarm, it lights red.

Settings
FIGHTER 1240
6
The indoor temperature depends on several fac-
tors. Sunlight and heat emissions from people and
household machines are normally sufficient to keep
the house warm during the warmer parts of the year.
When it gets colder outside, the heating system must
be started. The colder it is outside, the warmer radia-
tors and floor heating system must be.
The heat pump is controlled by built-in sensors for flow
and return brine temperatures (collector). Brine return
temperatures can, if so required, be limited to a mini-
mum (e.g. for ground water systems).
Heat production is usually controlled using the floating
condensing principle. This means that the tempera-
ture level needed for heating at a given outside tem-
perature is produced on the basis of values taken from
sensors for outside temperature and flow temperature.
As an option, room sensors can also be used to com-
pensate for deviations in room temperature, see menu
6.1 Room compensation.
However, the correct basic settings must be made on
the boiler first, see the section Settings — Basic set-
ting.
The basic heating is set using menu 2.1 and with the
Offset heating curve knob.
If the required room temperature is not obtained, read-
justment may be necessary.
NOTE! Wait one day between settings so that the tem-
peratures have time to stabilise.
Readjustment of basic settings.
Cold weather conditions
When the room temperature is too low, the Curve
coefficient value is increased in menu 2.1 by one
increment.
When the room temperature is too high, the Curve
coefficient value is lowered in menu 2.1 by one
increment.
Warm weather conditions
If the room temperature is low, increase the heating
curve offset setting by one step.
If the room temperature is high, reduce the heating
curve offset setting by one step.
Changing the room temperature manually.
If you want to temporarily or permanently lower or
raise the indoor temperature relative to the previously
set temperature, turn the Heating curve offset knob
anticlockwise or clockwise. One scale marking corres-
ponds to a change of about one degree in the room
temperature.
NOTE! An increase in the room temperature may be
inhibited by the radiator or floor heating thermostats, if
so these must be turned up.
Basic setting Changing the room
temperature
General
Menu 2.1 Curve coefficient
9
Curve coefficient
2.1
Heating
curve offset

Settings 7
FIGHTER 1240
The heating control system of the FIGHTER 1240 is
controlled by the outside temperature. This means the
supply temperature is regulated in relation to the cur-
rent outdoor temperature.
The relationship between the outside temperature and
the flow temperature is set using the control system,
also see section Settings — Basic setting.
The diagram is based on the dimensioned outdoor
temperature in the area and the dimensioned supply
temperature of the heating system. When these two
values meet, the heating control’s curve slope can be
read. This is set under menu 2.1, Curve coefficient.
Offset heating curve -2Setting using diagrams
30
40
50
60
70
°C
FRAMLEDNINGSTEMPERATUR
- 40 °C
UTETEMPERATUR
- 10
0
10 - 20 - 30
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
VÄRMEKURVA
- 5
+ 5
FÖRSKJUTNING
VÄRMEKURVA (0)
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
- 40 °C
UTETEMPERATUR
- 10
0
10
- 5
+ 5
30
40
50
60
70
°C
FRAMLEDNINGSTEMPERATUR
- 20 - 30
FÖRSKJUTNING
VÄRMEKURVA (-2)
VÄRMEKURVA
1514 13 12 11 10
8
7
6
5
4
3
2
1
- 40 °C
UTETEMPERATUR
- 10
0
10
- 5
+ 5
30
40
50
60
70
°C
FRAMLEDNINGSTEMPERATUR
- 20 - 30
FÖRSKJUTNING
VÄRMEKURVA (+2)
9
VÄRMEKURVA
Offset heating curve 0
Offset heating curve +2
Menu 2.1 Curve coefficient
9
Curve coefficient
2.1
The Offset heating curve knob is then set. A suitable
value for floor heating is -1 and for radiator systems
-2.
HEATING CURVE
OFFSET HEATING
CURVE
SUPPLY TEMPERATURE
OUTSIDE TEMPERATURE
HEATING CURVE
OFFSET HEATING
CURVE
SUPPLY TEMPERATURE
OUTSIDE TEMPERATURE
HEATING CURVE
OFFSET HEATING
CURVE
SUPPLY TEMPERATURE
OUTSIDE TEMPERATURE
A BI II III I II I II
A B
50.0°C
Varmvattentemperatur
13.43
1.0 P
Heating
curve offset

Settings
FIGHTER 1240
8
To be able to produce heat when the collector circuit is
disconnected, or during servicing, the heat pump can
be set to standby mode, in which case heating is pro-
duced only by the immersion heater. Hot water is not
produced in standby mode. The compressor and col-
lector system are then shutoff and only the heat medi-
um pump and the immersion heater are active. The
temperature is controlled by the thermostat (3). To
select standby mode, set the switch (8) to “”.
Electrical step 2 is connected in standby mode.
Standby mode
When there is a demand for hot water, the heat pump
gives this priority and devotes its entire output to water
heating. No room heat is produced in this mode. Maxi-
mum time for hot water charging is adjustable using
menu 1.3. Heating is then produced for the remainder
of the time, which is adjustable from menu 1.2, before
any further hot water charging can take place.
If the electrical module is connected for heat
production before hot water charging, one
electrical stage remains operative during hot water
operation. Hot water charging starts when the
hot water sensor has fallen to the set start tem-
perature (25 — 55 °C), adjustable on menu 1.4.
Hot water charging stops when the water tem-
perature on the hot water sensor (88) has reached
(30 — 60 °C), adjustable on menu 1.5. Charging is
also possible when the heat pump has reached its
stop level for heating mode at the same time as less
than 2 °C remains to the hot water start. The purpose
of this is to minimise the number of starts.
For occasional higher demand for hot water, the Extra
hot water function can be used to raise the tempera-
ture to about 70 °C for 3 – 24 hours (press the Extra
hot water button once). When the electrical module is
connected for extra hot water the compressor stops.
The value when the compressor stops and the immer-
sion heater kicks in is adjustable between 50 – 60 °C
in menu 1.7.
The supply of heat to the house is regulated in accord-
ance with the chosen setting of the regulating curve
(curve slope and offset). After adjustment, the correct
amount of heat for the outside temperature is supplied.
The heat pump’s flow temperature (menu 2.0) will hov-
er around the theoretical required value (the value in
brackets on the display). For subnormal temperatures
the control system calculates a heating deficit in the
form of degree-minutes, which means that heating
production is accelerated. The larger the subnormal
temperature, the greater the heat production.
There are four stages to heat production, one for the
heat pump and three for the electrical module.
Heating
Hot water
3
8

Maintenance routines 9
FIGHTER 1240
Warning to the
user!
Do not remove or adjust any com-
ponent part of this unvented water
heater: Contact the installer.
Warning to the
user!
If this unvented water heater develops
a fault, such as a flow of hot water
from the discharge pipe, switch the
heater off and contact the installer.
FIGHTER 1240 has three safety valves, one for the
heating system and two for the water heater.
The safety valves must be checked regularly. Check
one valve at a time as follows:
■Open the valve.
■Check that water flows through the valve.
■Close the valve.
■The heating system may need to be refilled after
checking its safety valve.
Checking the safety valves

General information for the installer10
FIGHTER 1240
Current regulations require the heating installation to
be inspected before it is commissioned. The inspec-
tion must be carried out by a suitably qualified per-
son and should be documented. The above applies to
closed heating systems. If the heat pump is replaced,
the installation must be inspected again.
FIGHTER 1240 is placed on a firm base, preferably
a concrete floor or foundation. Install FIGHTER 1240
with its back to an outside wall, ideally in a room where
noise does not matter. If this is not possible, avoid plac-
ing it against a wall behind a bedroom or other room
where noise may be a problem. Any wall that backs on
to a bedroom 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
Guideline values for collectors
Inspection of the installation
For use with 40 x 2.4 PN 6.3 PEM hose.
The length of the collector hose varies depending
on the rock /soil conditions and on the heating sys-
tem, i.e. radiators or floor heating.
Max length per collector should not exceed 400 m.
Where there is more than one collector, they must be
connected in parallel, with a means of adjusting the
flow.
For surface soil heat, the hose should be buried at a
depth of about 1 metre and the distance between the
hoses should be at least 1 metres.
For several bore holes, the distance between the holes
must be at least 15m.
FIGHTER 1240 can be used with only additional heat
(electric boiler) to produce heating and hot water, for
example, before the collector installation is complete.
See menu 9.2.4. NOTE! Select Off to deactivate
only additional heat and select the required oper-
ating mode using the operating mode button.
The brine pump normally follows the operation of
the heat pump. There is a special operating mode for
continuous operation for 10 days, followed by return
to normal mode (this may be used before stable cir-
culation has been established). See Settings, menu.
9.2.12.
Additional heat only (electric
boiler mode)
Brine pump
+2
0
-2
1
R
0
HMflow 49(50)°C
Hotwater
51°C
+2
0
-2
1
R
0
HMflow
49(50)°C
Hotwater
51°C
8 325 – 2x250 m 120 – 140 m
Type Surface soil heat, Rock heat, recom-
recommended mended active
collector length drilling depth
5 200 – 300 m 70 – 90 m
12 2x250 – 2x350 m 160 – 190 m
FIGHTER 1240 is equipped with an electric anode to
protect the enamelled hot water heater. The electric
anode works automatically when FIGHTER 1240 is
switched on and is positioned behind the lower, serv-
ice cover.
■A green LED on the transformer indicates that the
electric anode is operational.
■When the LED is not lit the anode is not receiving
power; call the installer when this can not be recti-
fied.
■When the LED flashes red, contact the installer.
Electric anode (enamel)
The FIGHTER 1240 must be transported and stored
upright and dry. The FIGHTER 1240 may however
be carefully laid on its back when being moved into a
building.
Transport and storage
Normally it is no problem to install FIGHTER 1240 in
hard water areas since the maxing working tempera-
ture is 60 °C.
Hard water areas

Pipe connections 11
FIGHTER 1240
Pipe installation must be carried out in accordance
with current norms and directives. The heat pump can
operate up to a return temperature of about 58* °C
and an outgoing temperature of about 70* °C from the
heat pump. The compressor produces up to 65*°C, the
rest is obtained using additional heating.
* Applies to 5 kW 1-phase.
The other heat pumps has a max return temperature
of approximately 50 °C and an outgoing max tempera-
ture from the heat pump of approximately 60 °C.
Since the FIGHTER 1240 is not fitted with shut-off
valves, these must be fitted outside of the heat pump
to make future servicing easier.
During assembly of FLM the pipes for the heat medi-
um and water heater and possibly hot water circulation
are routed backwards. The distance between FIGHT-
ER 1240 and the wall ought to be 50 mm.
The system requires a low-temperature dimensioning
of the radiator circuit. At DUT, the highest recommend-
ed temperatures are 55 °C on the flow line and 45 °C
on the return line.
When the circulation pump is running, the flow in the
radiator circuit must not be completely stopped.
The total volume is 205litres, with 160litres in the water
heater and 45litres in the boiler section.
The pressure vessel in the FIGHTER1240 is approved
for max 9.0 bar (0.9MPa) in the water heater and 2.5bar
(0.25MPa) in the double shell section.
Overflow water from the evaporator collection tray and
safety valves goes via non-pressurised collecting pipes
to a drain so that hot water splashes cannot cause
injury. These non-pressurised collecting pipes shall not
be used for anything else. A discharge pipe from the
tundish (108) connected to the expansion relief valve
(47) (safety valve) shall also be connected to a drain in
the same way.
Discharge pipes from tundishes shall have av vertical
section of pipe at least 300 mm long, before any elbows
or bends in the pipework. See following picture.
General
NOTE!
The pipe system needs to be flushed
out before the heat pump is connected
so that debris cannot damage compo-
nent parts.
If the vertical distance, 300 mm, is hard to fulfil a
heightening console is available as an accessorie. No
valve should be fitted between the pressure reduction
valve (expansion valve) and the storage cylinder.
500 mm maximum
300 mm
minimum
Tundish
Metal discharge pipe from
temperature relief value to tundish.
Metal discharge pipe from tundish,
with continous fall.
Discharge below
fixed grating.
Fixed grating
Trapped gulley
Possible wall
Safety device
(e.g. temperature
relief valve).
<G3> / 4 22 mm 28 mm up to 9 m 1,0 m
G1 / 2 15 mm 35 mm up to 27 m 1,4 m
<G3> / 4 22 mm 42 mm up to 27 m 1,7 m
<G3> / 4 22 mm 35 mm up to 18 m 1,4 m
G1 28 mm 42 mm up to 18 m 1,7 m
G1 28 mm 35 mm up to 9 m 1,4 m
Valve Minimum size of Minimum size of discharge Maximum resistance allowed, Resistance created
outlet size discharge pipe pipe from tundish expressed as a lenght by each elbow
of straight pipe or bend
(i.e. no elbows or bends)
G1 28 mm 54 mm up to 27 m 2,3 m
G1 / 2 15 mm 28 mm up to 18 m 1,0 m
G1 / 2 15 mm 22 mm up to 9 m 0,8 m
Table sizing of copper discharge pipe for common temperature relief valve outlet sizes.

Pipe connections
FIGHTER 1240
12
Factors to be taken into account when designing the
collector layout are geographical position, type of rock/
soil and cover factor of the heat pump.
When installing the collector hose ensure it rises con-
stantly towards the heat pump to avoid air pockets. If
this is not possible, install high points to vent the air.
All collector pipes in heated rooms must be insulated
against condensation. The level vessel (NK) must be
installed as the highest point in the collector system
and on the incoming pipe before the brine pump. Note
that condensation may drip from the level vessel. Posi-
tion the vessel so that this does not harm other equip-
ment.
As the temperature of the collector system can fall
below 0 °C it must be protected against freezing down
to -15 °C. One litre of ready mixed brine per meter of
collector hose (applies when using PEM-hose 40 x
2.4 PN 6.3) is used as a guide value when making the
volume calculation.
Details of the antifreeze used must be shown on the
level vessel.
Shut-off valves should be installed as close to the heat
pump as possible. Fit the supplied particle filter on the
incoming pipe.
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 additional heat exchang-
er.
Pipe connections (collector)
LEK
The enclosed cover plates are fitted on the side panel,
see figure
The collector circuit may be connected from the left or
from the right. The lower side panels are swapped over
to suit the chosen connection option. The enclosed
connecting pipes for the brine are secured using the
clips in the punched tabs that are folded down on the
side in question.

Brine in
Brine out
EXP
P
SF
NK
AV
SÄV
106
BK/JK SF
108
109
145
147
148 47
149
151
Pipe connections 13
FIGHTER 1240
Pipe connections for the heat medium side are made
at the top. All required safety devices, shut-off valves
(as close to the heat pump as possible), and particle
filter (supplied) must be attached.
When 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.
Pipe connections (heating
medium)
NK Level vessel
SF Particle filter
■Connect enclosed flexible hose (147) between con-
nection (149) and the heating system. Open the fill-
ing valve (151). The boiler part of the heat pump
and the radiator system are now filled with water.
■After a while the pressure reaches 2.5 (bar)
(approx.25mvp) and a mixture of air and water
starts to emerge from the safety valve. The filling
valve (151) is then closed.
■When the filling procedure is finished the flexible
hose (147) shall be removed.
Filling the heating system
Warning to the
installer!
This installation is subject to building
regulation approval, notify the Local
Authority of intention to install.
Warning to the
installer!
Use only manufacturer’s
recommended replacement parts.
The heat pump´s water heater must be fitted with the
necessary valve equipment.
The heat pump should be supplemented with an elec-
tric water heater if a bubble pool or other significant
consumer of hot water is installed. The valve coupling
in COMPACT (electrical water heater) can be divided.
The mixing valve stays in COMPACT and the remain-
ing valve coupling can be used for incoming cold water
in FIGHTER 1240.
Pipe connections (water heater)
VV
KV
FIGHTER 1240
The safety valves must have an opening pressure
according to “Technical specifications” and are fitted
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.
Safety valves

Pipe connections
FIGHTER 1240
14
The installation can be supplemented with the exhaust
air module FLM to provide ventilation recovery.
Pipes and other cold surfaces must be insulated with
diffusion-proof material to prevent condensation.
The collector circuit should be fitted with a pressure
expansion vessel. If there is a level vessel, this should
be replaced.
The equipment can be supplemented with a fan coil
unit to make the connection of ambient cooling pos-
sible.
To avoid condensation, all pipes and other cold surfaces
must be isolated with diffusion-proof material.
Where the cooling demand is high, fan convectors
with drip trays and drain connection are needed.
The collector circuit should be fitted with a pressure
expansion vessel. If there is a level vessel, this should
be replaced.
Free cooling Ventilation recovery
SF
KBin
KBut
SÄV
EXP
BV
P
Fläktkonvektor
KBin
KBut
SF
SÄV
FLM 30
Frånluft
Ø 160
Avluft
Ø 160
EXP
BV
RV
P
Brine in
Fan convectors
Brine out
Brine in
Extract air
Ø 160
Exhaust air
Ø 160
Brine out

Pipe connections 15
FIGHTER 1240
Pump capacity diagrams,
heating medium side Pump capacity diagrams,
collector side
FIGHTER 1235 5
kPa
0
10
80
40
Tillgängligt tryck
Flöde
60
00,1 0,2 0,3 l/s
0,4 0,5 0,6 0,7 0,8
123
20
30
50
70
FIGHTER 1235 8
kPa
0
10
80
40
Tillgängligt tryck
Flöde
60
0 0,1 0,2 0,3 l/s
0,4 0,5 0,6 0,7 10,90,8
1 2 3
20
30
50
70
Flöde
00,1 0,2 0,3 l/s
0,4 0,5 0,6 0,7 10,90,8
kPa
30
40
110
70
Tillgängligt tryck
90
50
60
80
100
1
2
34
FIGHTER 1240 5
FIGHTER 1240 8
FIGHTER 1240 12
LEK
GRUNDFOS
TypeUPS25-60130P/N:59526447
230V-
HEJSAN
PC;0017NIB
DK
50Hz
IP44
TF110
ClassH
Max.10bar
2.5uF
45
0.20
65
0.30
90
0.40
1m(A)P
,(W)
The pump is adjust-
able to adjust the
flow: 1, 2, or 3.
0
kPa
0,1 l/s
0,2
Tillgängligt tryck
Flöde
0,3 0,4
20
40
60
10
30
50
70
0
0,70,60,5
FIGHTER 1225 5
123
FIGHTER 1225 12
kPa
0
20
80
40
Tillgängligt tryck
Flöde
60
90
10
70
30
50
0 l/s
0,2 0,4 0,8 1,21,00,6
123
20
40
60
10
30
50
70
kPa
0
Tillgängligt tryck
Flöde
FIGHTER 1225 10
0 l/s
0,1 0,2 0,3 0,4 0,7 0,8 1,00,90,60,5
1 2 3
FIGHTER 1240 12
FIGHTER 1240 5
FIGHTER 1240 8
Available pres-
sure
Available pres-
sure
Available pres-
sure
Flow
Flow
Flow
Available pres-
sure
Available pres-
sure
Available pres-
sure
Flow
Flow
Flow
The pump is adjust-
able to adjust the
flow: 1, 2, or 3 (4).
FIGHTER 1240 12 kWFIGHTER 1240 5–8 kW
LEK
1
2
LEK
GRUNDFOS
TypeUPS25- 60130P/N:59526447
230V-
HEJSAN
PC;0017NIB
DK
50Hz
IP 44
TF110
Class H
Max.10bar
2.5uF
45
0.20
65
0.30
90
0.40
1m(A)P
,(W)

Electrical connection
FIGHTER 1240
16
FIGHTER 1240 must be installed via an isolator switch
with a minimum breaking gap of 3 mm.
Incoming electricity connected to terminal block -X9
via cable gland (99)
Other electrical equipment, except the outdoor sensor
and the current transformers, is connected at the factory.
■ Disconnect the heat pump before insulation testing
the house wiring.
■ The heat pump is not reconnectable between 1-
phase and 3-phase; neither can it be reconnected
between 3 x 230 V and 3 x 400 V.
■ If a miniature circuit breaker is used this should
have motor characteristic “D” (compressor opera-
tion). For fuse ratings, see technical specifications.
■ Check that motor protection (26) is set to “auto-
mode” and that the operating current has been set
correctly, see technical specifications, “Max. opera-
ting current, compressor”.
■ When the building is equipped with an earth-fault
breaker the heat pump should be equipped with a
separate one.
■ Connection must not be carried out without the
permission of the electricity supplier and must be
carried out under the supervision of a qualified
electrician.
Electrical connections
The automatic heating control system, circulation
pumps and their wiring, are internally fuse protected
with a miniature circuit breaker (1).
Connection
NOTE!
Reset the temperature limiter, it may
have tripped during transport.
NOTE!
The switch(8) must not be turned to 1
or “ ” until the boiler has been
filled with water. Otherwise the
temperature limiter, thermostat,
compressor or the immersion heater
can be damaged.
NOTE!
Electrical installation and service must
be carried out under the supervision of
a qualified electrician in accordance
with the stipulations in force.
Temperature limiter
The temperature limiter (25) cuts off the supply to the
immersion heater and (169) cuts off the supply to the
compressor if the temperature rises to 88°C; they can
be manually reset by pressing the buttons on the tem-
perature limiters.
Resetting
The temperature limiters (25) and (169) are accessible
behind the cover for right-hand electrical connection.
The temperature limiters are reset by firmly pressing
in its button.
LEK
LEK
-X9
-X9
25
169
1
99
8
26
LEK
1 mm
5,5 mm

Electrical connection 17
FIGHTER 1240
Connection on delivery
230 V: The heat pump is connected on terminal block
-X9 to 230 V+ PE via the junction box with fuses.
Connection on delivery 230 V -5
N
L
PE
-X9

Electrical connection
FIGHTER 1240
18
Connection on delivery
230 V: The heat pump is connected on terminal block
-X9 to 230 V+ PE via the junction box with fuses.
Connection on delivery 230 V -8, -12
N
L
PE
-X9