Nibe VVM 240 Technical specifications

R
MOS GB 0521-1 511263
VVM 240
INSTALLATION AND MAINTENANCE INSTRUCTION
VVM 240
LEK
+2
0
-2
AB AB AB
III III I II III
VVM 240

LEK LEK
1
2
LEK LEK
3
4
5

Contents 1
VVM 240
General
Concise product description ................................ 2
Setting table ........................................................ 2
System description
Principle of operation .......................................... 3
System diagram .................................................. 3
Front panel
Layout .................................................................. 4
Explanation .......................................................... 4
Settings
Heating control system ........................................ 6
Default setting ...................................................... 6
Changing the room temperature .......................... 6
Basic values for the automatic heating control system .... 7
Setting using diagrams .......................................... 8
Offset heating curve -2 .......................................... 8
Offset heating curve 0 ............................................ 8
Offset heating curve +2 .......................................... 8
Maintenance routines
Checking the safety valves .................................. 9
Pressure gauge .................................................... 9
Actions with operating disturbances
Low temperature or a lack of hot water ................ 10
High hot water temperature .................................. 10
Low room temperature ........................................ 10
High room temperature ........................................ 10
Switch position “ ” .......................................... 10
Alarm/alarm outputs ............................................ 11
Resetting the temperature limiter ........................ 13
Resetting the miniature circuit breakers .............. 13
Helping the circulation pump to start .................... 13
General information for the installer
Transport and storage .......................................... 14
Maximum boiler and radiator volumes ................ 14
Erecting the heat pump ........................................ 14
Inspection of the installation ................................ 14
Electric boiler mode .............................................. 14
Pipe connections
General ................................................................ 15
Pipe connections for the heating system and hot water ..15
Draining the heating system ................................ 16
Emptying the water heater .................................. 16
Capacity diagram, heat medium pump and
charge pump ...................................................... 16
Pipe connection between VVM 240
and FIGHTER 2010 .............................................. 17
Docking
General ................................................................ 18
VVM 240 docked to FIGHTER 2010 ...................... 18
Electrical connections
Connection .......................................................... 19
Access to the lower electrical connections .......... 19
Modular cable between VVM 240
and FIGHTER 2010
............................................ 20
Output as set at the factory .................................. 21
Resetting the temperature limiter ........................ 21
Max phase current .............................................. 21
Max boiler temperature ........................................ 21
Connecting the outside sensor ............................ 21
Centralised load control and load monitor .......... 22
External contacts ................................................ 23
Disconnecting the charge pump .......................... 23
Commissioning and adjustment
Preparations ........................................................ 24
Filling the water heater and the heating system.... 24
Venting the heating system .................................. 24
Start up without FIGHTER 2010 .......................... 25
Start up with FIGHTER 2010 ................................ 25
Readjustment ........................................................ 25
Control
General ................................................................ 26
Key lock ................................................................ 26
Quick movement .................................................. 26
Changing parameters .......................................... 27
Menu tree ............................................................ 28
Main menus .......................................................... 31
Hot water temperature ........................................ 32
Flow temperature ................................................ 33
Outside temperature ............................................ 34
Heat pump ............................................................ 35
Clock .................................................................... 36
Miscellaneous ...................................................... 37
Service menus
Heat pump settings .............................................. 39
Settings additional heat ........................................ 41
Operating settings ................................................ 42
Quick start ............................................................ 44
Alarm log .............................................................. 44
Dimensions
Dimensions and setting-out coordinates .............. 45
Measuring principle .............................................. 45
Component positions
Component locations .......................................... 46
List of components
List of components .............................................. 47
Circuit diagram
Circuit diagram .................................................... 48
Sensors
Sensor placement ................................................ 49
Temperature sensor data .................................... 49
Accessories
Accessories .......................................................... 50
Technical data
Technical specifications ...................................... 51
Enclosed kit .......................................................... 51

General
VVM 240
2
Installation date
Installer
The serial number (103), should always be stated with all
correspondence with NIBE.
089 ___________
Chosen max. output, immersion heater
Circulation pump setting (16), heating medium
Circulation pump setting (40), charge pump
Curve slope setting
Setting Offset heating curve
Date__________________ Signed_____________________
Completed when the product is installed
In order to get the ultimate benefit from your hot
water module VM 240 you should read through this
Installation and Maintenance Instruction.
VVM 240 supplies the house with hot water and
heating as well as controls FIGHTER 2010 to give
optimum performance.
Microprocessors ensure that VVM 240 always
works efficiently.
VVM 240 is a Swedish made quality product offer-
ing a long life.

System description 3
VVM 240
Principle of operation
System diagram
VVM 240 is an electric boiler intended for houses with
water based heating. It consists of a double-jacketed
pressure vessel, two immersion heaters and an
advanced control system.
The water heater is equipped with a copper corrosion
inhibitor. The immersion heaters are located in the dou-
ble-jacket.
The immersion heaters have a max output of 13.5 kW
with the possibility of setting lower outputs. The factory
setting is 9.0 kW.
The total water volume is 240 litres of which 70 litres is
in the double-jacketed space and 170 litres in the water
heater.
VVM 240 is equipped with a climate controlled, automat-
ic bypass system so that the right temperature is
obtained for the heating system. This temperature is
determined by the outdoor temperature and the selected
default settings.
VVM 240 is designed for the direct connection and
communication with FIGHTER 2010. Sizes 6 and 8 can
be connected. FIGHTER 2010 and VVM 240 together
make up a complete heating plant.
FIGHTER 2010 covers the entire heating and hot water
requirement until the house’s requirement exceeds the
heat pump’s stated output. In the temperature zone
between the balance temperature and the stop tempera-
ture, FIGHTER 2010 works together with VVM 240.
Should the outdoor temperature fall to a level below the
stop temperature of FIGHTER 2010, all heating is pro-
vided by VVM 240.
The heating medium side and the domestic hot water
side must be fitted with the necessary safety equip-
ment in accordance with the applicable regulations.
NOTE! This is an outline diagram Actual installations
must be planned according to applicable standards.
95
FIGHTER 2010
VVM 240
AV
AV
SÄK
SF
RC
TV
FG
RG
UG

Front panel
VVM 240
4
Pressure gauge
The radiator circuit pressure is displayed here.
Gauge graduation is 0 — 4 bar. Normal pres-
sure is 0.5 1.5 bar with a closed system.
Switch
with three positions 1 - 0 - :
1Normal mode. All control functions connected.
0 Boiler completely switched off.
Standby. This position is used in the event
of operating disturbances. The immersion
heater output is limited to 6 kW, the circula-
tion pump (16) and charge pump (40) are in
continuous operation.
The switch must not be turned to 1 or “ ”
before filling the boiler with water.
Display
2
1bar 3
04
A B A B A BI II III
54.1°C
Hotwatertemp.
1.0 13.43
Switch
Pressure gauge
B
Left
keypad Offset heating
curve
Display First row:
Compressor symbol
Atogether with a compressor symbol is
shown when step 1 is operational.
Btogether with a compressor symbol is
shown when step 2 is operational.
Only a compressor symbol indicates that the
compressor will start, but is blocked as an inter-
nal start condition in FIGHTER 2010 has not
been met, e.g. time condition.
Layout
AC
B
DE
Right
keypad
A B
Addition symbol
Indicates when immersion heater is con-
nected. The line indicates which power
step/steps are currently connected.
I3 kW additional power is connected
II 4.5 kW additional power is connected
III 6 kW additional power is connected
Hot water symbol
Indicates when the Extra hot water function
is active.
Ais shown when the 24 hour temperature
increase is active.
Bis shown when a time based temperature
increase is activated, for example periodic.
Circulation pump symbol
Shown when the circulation pump is oper-
ational.
Heating system symbols
Shown when house heating is in progress.
Defrosting symbol
Indicates when defrosting of FIGHTER
2010 is in progress.
F
C
Explanation
A
I II III
A B

Front panel 5
VVM 240
Display
Second row: Value of the current parameter.
Third row: Description of current display para-
meter. Hot water temp is normally
shown.
Fourth row: Shows the current menu number,
key lock and clock
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
button.
The different operating modes are:
Auto mode: VVM 240 automatically selects the oper-
ating 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 2010. The circulation pump and immersion
heater are blocked. However, when Extra hot water is
activated the immersion heater is connected.
Spring/Autumn mode: Only production of heating
and hot water using FIGHTER 2010. The circulation
pump is operational. The immersion heater is dis-
abled. However, when Extra hot water is activated the
immersion heater is connected.
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.
Extra hot water
The Extra hot water function is activat-
ed using this button.
A: Means that the hot water temperature is increased
to 60 °C (adjustable) during 24 hours. The tempera-
ture then returns to the normal value.
When Acomes on the function is activated.
When Agoes out the function is deactivated.
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 clock-
wise increases the room temperature.
When the knob is turned menu 2.0 is
shown on the display and the value for
the calculated flow temperature
changes.
No function.
C
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 dis-
play. The same procedure is used to
deactivate the key lock.

Settings
VVM 240
6
Heating control system
The indoor temperature depends on several factors.
During the hot season, solar radiation and heat given
off by people and equipment are sufficient to keep the
house warm. When it gets colder outside, the heating
system must be started. The colder its gets, the hotter
the radiators must be.
This adjustment is made automatically, however the
basic settings must first be made on the boiler, see the
section Room temperature - Default setting.
The Curve coefficient is set using menu 2.1 and with
the Offset heating curve knob.
If you do not know the correct settings, use the basic
data from the map opposite.
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 heating
curve value is increased in menu 2.1 by one incre-
ment.
When the room temperature is too high, the heating
curve value is decreased in menu 2.1 by one incre-
ment.
Warm weather conditions
If the room temperature is low, increase the offset
heating curve setting by one step.
If the room temperature is high, reduce the heating
curve offset setting by one step.
Default setting
Offset heating
curve
Menu 2.1 Curve coefficient
9
Curve coefficient
2.1

Settings 7
VVM 240
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 to three lines approxi-
mately represents a 1 degree change in room tempera-
ture.
NOTE! An increase in the room temperature may be
inhibited by the radiator or floor heating thermostats, if
so these must be turned up.
Changing the room temperature
A B A B A BI II III
54.1°C
Hotwatertemp.
1.0 13.43
Offset heating
curve

Settings
VVM 240
8
VVM 240 is equipped with an outdoor temperature
controlled automatic heating system. This means the
flow temperature is regulated in relation to the current
outdoor temperature.
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.
30
40
50
60
70
°C
FRAMLEDNINGSTEMPERATUR
- 40 °C
UTETEMPERATUR
- 10
0
10 - 20 - 30
15 14 1312 11 10 9
8
7
6
5
4
3
2
1
VÄRMEKURVA
- 5
+ 5
FÖRSKJUTNING
VÄRMEKURVA (0)
15 14 1312 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 1312 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
Ä
9
VÄRMEKURVA
Offset heating curve 0
Offset heating curve -2
Setting using diagrams
Offset heating curve +2
HEATING CURVE
HEATING CURVE
HEATING CURVE
OFFSET HEATING
CURVE
OFFSET HEATING
CURVE
SUPPLY TEMPERATURESUPPLY TEMPERATURESUPPLY TEMPERATURE
OUTSIDE TEMPERATURE
OUTSIDE TEMPERATURE
OUTSIDE TEMPERATURE
OFFSET HEATING
CURVE
NOTE!
Heating curve in menu 2.1 and Max
supply temp. in menu 2.4 are adjusted
according to the heating system in
question.
Offset heating
curve
Menu 2.1 Curve coefficient
9
Curve coefficient
2.1
A suitable value is set using the Offset heating curve
knob (38) on the front panel.
A suitable value for floor
heating is -1 and for radiator systems -2.

Maintenance routines 9
VVM 240
LEK
+2
0
-2
ABABAB
IIIIIIIIIIII
VVM240
LEK
+2
0
-2
AB AB AB
IIIIIIIII III
VVM240
The working range of the heating system is normally
0.5 — 1.5 bar with a closed system. Check this on the
pressure gauge (42).
VVM 240 features two safety valves, one for the heat-
ing system and one for the water heater.
The heating system’s safety valve (52) must be com-
pletely tight, but the hot water safety valve (47) may
occasionally release some water after hot water has
been used. This is because the cold water, which
enters the water heater to replace the hot water,
expands when heated causing the pressure to rise
and the safety valve to open.
Check both the pressure relief valves
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 the safety valve (52), see the section
Commissioning and adjustment — Filling the heat-
ing system.
Pressure gauge
2
1bar 3
04
52
47
Checking the safety valves

Actions with operating disturbances
VVM 240
10
LEK
+2
0
-2
ABABAB
IIIIII IIIIII
VVM240
If the operating disturbance cannot be rectified by means of the above an installation
engineer should be called. If necessary set the switch to “ ”. See the section switch
position “ ”
In position “ ” the electric boiler's electronic control
is disconnected, the display screen is not lit.
The immersion heater is controlled by a separate ther-
mostat. The available output in standby mode is 6 kW
The automatic heating control system is not opera-
tional, so manual shunt operation is required. This is
done by turning the adjuster screw to manual mode
and then turning the shunt lever to the required posi-
tion.
The max. temperature on the standby mode thermo-
stat should be set for the heating system's maximum
permitted working temperature, during installation.
The circulation pump (16) and charge pump (40) are
in continuous operation.
Switch position “ ”
■Incorrect values set on the automatic heating con-
trol system.
High room temperature
■Air in boiler or system.
■Large amounts of hot water were used.
■Circuit or main MCB tripped.
■Possible earth circuit-breaker tripped.
■Too low mixer valve setting (45).
■Switch (8) set to “0”.
■Tripped MCB (7) or fine-wire fuse (33). See the
section Dealing with malfunctions — Resetting the
miniature circuit breakers.
■Tripped temperature limiter (6). (Contact service)
■Closed or throttled filler valve (46) on the water
heater.
■Load monitor or external control may have blocked
the electrical output.
■Incorrect values set for hot water production.
Low temperature or a lack of
hot water
■Air in boiler or system.
■Circuit or main MCB tripped.
■Possible earth circuit-breaker tripped.
■Tripped MCB (7) or fine-wire fuse (33). See the
section Dealing with malfunctions — Resetting the
miniature circuit breakers.
■Tripped temperature limiter (6). (Contact service)
■Automatic heating control system settings not cor-
rect.
■Day setting set incorrectly so the night change is
active during the day.
■Circulation pump (16) stopped. See the section
Dealing with malfunctions — Starting the pump.
■Close valves (44) and (50) in the radiator circuit.
■Initial pressure in expansion vessel too low. This is
indicated by low pressure on the pressure gauge
(42). Contact the installer.
■Load monitor or external control may have blocked
the electrical output.
Low room temperature
■Too high mixer valve setting.
■Incorrect values set for hot water production.
High hot water temperature
In the event of malfunctions or operating disturbances first
check the points below:
NOTE!
When returning to normal mode, do
not forget to reset the shunt lever to
the original position by turning the
adjuster screw to A.
Adjuster screw

Actions with operating disturbances 11
VVM 240
Low Fluid Temp.
This information is shown when the low pressure
switch in FIGHTER 2010 has tripped. This may be
because the evaporator is covered in ice or reduced
air flow through the evaporator. The information is
cleared when the pressure switch has been reset and
FIGHTER 2010 has been restarted. VVM 240 switch-
es to educed electric boiler mode*.
Sensor Alarm
This information is shown when a temperature sensor
in FIGHTER 2010 stops working. This may be due to
a broken cable or incorrect installation. The informa-
tion is cleared when the cause of the fault has been
rectified and FIGHTER 2010 restarted. VVM 240
switches to reduced electric boiler mode*.
Alarm/alarm outputs
LOW FLUID TEMP.
1.0
High Pressure
This information is shown when the high pressure
switch in FIGHTER 2010 has tripped. This may be
due to a too low charge flow or air in the system. The
information is cleared when the pressure switch has
been reset and FIGHTER 2010 has been restarted.
VVM 240 switches to educed electric boiler mode*.
HIGH PRESSURE
1.0
Motor Security
This information is shown when the motor cut-out on
FIGHTER 2010 has tripped. This may be due to a
phase failure because of a tripped fuse or incorrect
motor protection setting. The information is cleared
when the fault has been rectified and FIGHTER 2010
has been restarted. VVM 240 switches to reduced
electric boiler mode*.
MOTOR SECURITY
1.0
SENSOR ALARM
1.0
F2010 Communic.
Fault text shown when contact between VVM 240 and
FIGHTER 2010 has been lost. This may be due to a
broken cable or that the voltage to FIGHTER 2010 is
not switched on. The information is cleared when both
VVM 240 and FIGHTER 2010 are restarted.
NOTE! VVM 240 should be switched on within 5 min-
utes of FIGHTER 2010 being restarted and communi-
cation between the products is restored. VVM 240
switches to reduced electric boiler mode*.
F2010 COMMUNIC.
1.0
Temp. Limit
Shown when the temperature limiter has tripped. The
cause of the fault here may be the start of VVM 240
without filling the boiler section with water. The tem-
perature limiter may have tripped when VVM 240 was
transported. To reset see the section, Electrical con-
nection — Resetting the temperature limiter. The
information is cleared once the fault has been rectified
and VVM 240 is restarted.
TEMP. LIMIT
1.0
In the event of an alarm the relay contact makes
* Signifies that the compressor is blocked and the flow temperature is forced to the set min. temperature (menu 2.4).
Press the operating mode button twice to switch to normal electric boiler mode.
Other information can also be shown on the display
besides the standard information. This applies with
malfunctions or for calls to take action. This type of
information is only shown in menu 1.0 (The display
always automatically returns to menu 1.0 approxi-
mately 30 minutes after the last button was pressed).
This information alternates with menu 1.0’s standard
information. At the same time the display’s back-
ground lighting flashes.
The following information can be shown.
Alarm output
Supply
Max. 2A/250VAC

Actions with operating disturbances
VVM 240
12
NOTE!
The product's serial number should
always be stated with all
correspondence with NIBE.
089
___________
Alarm/alarm outputs
Supply sensor
This information is shown when a fault on the flow
temperature sensor has been registered. The alarm
may be due to a faulty sensors or broken sensor
cable. The information is cleared once the fault has
been rectified and VVM 240 is restarted.
Warmwater Alarm
This information is shown when a fault on the hot
water temperature sensor has been registered. The
alarm may be due to a faulty sensors or broken sensor
cable. The information is cleared once the fault has
been rectified and VVM 240 is restarted.
WARMWATER ALARM
1.0
SUPPLY SENSOR
1.0
Warmwater el.power
This information is shown when a fault on the immer-
sion heater temperature sensor has been registered.
The alarm may be due to a faulty sensors or broken
sensor cable. The information is cleared once the fault
has been rectified and VVM 240 is restarted.
WARMWATER EL.POWER
1.0

Actions with operating disturbances 13
VVM 240
■Shut down VVM 240 by turning the switch (8) to
“0”.
■Remove the lower front cover.
■Loosen the air screw with a screwdriver. Hold a
cloth around the screwdriver blade as a certain
amount of hot water may run out.
■Insert a screwdriver and turn the pump rotor.
■Screw in the venting screw.
■Start VVM 240 and check whether the circulation
pump runs.
It is usually easier to start the circulation pump with
VVM 240 running, switch (8) set to “1”. If helping the
circulation pump to start is performed with VVM 240
running, be prepared for the screwdriver to jerk when
the pump starts.
Helping the circulation pump
to start
The MCB (7) is accessible behind the upper front
access panel and is located to the right of the panel.
Normal mode of the MCB is 1(up).
Resetting the miniature circuit
breakers
Luftningsskruv
16
LEK
GRUNDFOS
Type UPS 25 - 60 130 P/N:59526447
230V-
HEJSAN
PC;0017NIB
DK
50Hz
IP 44
TF 110
Class H
Max. 10bar
2.5uF
450.20
65
0.30
90
0.40
1m(A) P,(W)
The temperature limiter (6) is accessible from behind
the centre front cover and is positioned under the
inner protective cover.
The temperature limiter is reset by firmly pressing in
its button. The button can be accessed from the
underside of the distribution box. The cover on the dis-
tribution box does not need to be removed when
resetting.
Resetting the temperature
limiter
6
Venting screw

General information for the installer
VVM 240
14
Current regulations require the heating installation to
be inspected before it is commissioned. The inspec-
tion must be carried out by a suitably qualified person
and should be documented. The above applies to
installations with a closed expansion vessel. If the
electric boiler or the expansion vessel is replaced, the
installation must be inspected again.
Install the electric boiler in a scullery or boiler room.
Level the unit using the adjustable feet.
Route pipes so they are not fixed to an internal wall
that backs on to a bedroom or living room.
The VVM 240 must be transported and stored upright
and dry. The VVM 240 may however be carefully laid
on its back when being moved into a building.
Transport and storage
Erecting the heat pump
Inspection of the installation
VVM 240 can be set in electric boiler mode from here.
This mode means the heat pump is blocked, but all
other components function as normal. This mode can
be activated when a fault occurs on the heat pump or
when the heat pump is not installed. Summer mode
cannot be activated in electric boiler mode.
NOTE! When FIGHTER 2010 is not docked, the
charge pump (40) should be electrically discon-
nected. See the section Electrical connection —
Disconnecting the charge pump.
Two different operating modes are possible.
Option 1. Electric boiler mode
■Select Service in menu 8.1.1.
■Select 0 in menu 9.1.2.
■Select Yes in menu 9.3.2.
Option 2. Standby mode “ ”
This mode should be used when an outdoor sensor is
not connected. Electronic control is disconnected in
the “ ” position. The display is not lit.
The automatic heating control system is not opera-
tional, so manual shunt operation is required. This is
done by turning the adjuster screw to manual mode
and then turn the shunt lever to the required position.
The immersion heater output is limited to 6 kW and
the circulation pump (16) and charge pump (40) are in
continuous operation.
NOTE!
When returning to normal mode, do
not forget to reset the shunt lever to
the original position by turning the
adjuster screw to A.
Electric boiler mode
VN
I
N
R
AG
DT
AY
K
S
AL 5
4
3
2
1
T6
RN
E
I
RE
S. 5
4
3
2
1
6
V
VV
K
LEK
40
The volume of the expansion
vessel (85) is 10 litres and it
is pressurised as standard to
0.5 bar (5 mvp). As a result,
the maximum permitted
height H between the vessel
and the highest radiator is
5 metres; see figure
If the standard initial pres-
sure in the pressure vessel is
not high enough it can be
increased by adding air via
the valve in the expansion
vessel. The initial pressure of
the expansion vessel must be stated in the inspection
document.
Any change in the initial pressure affects the ability of
the expansion vessel to handle the expansion of the
water.
Max. system volume excluding the boiler is at 80 °C
and the above initial pressure 140 litres.
Maximum boiler and radiator
volumes
H
Adjuster screw
16

Pipe connections 15
VVM 240
Pipe connections for VVM 240 should be made
according to the following points. Supply line, radiator
circuit (70) and return line, radiator circuit (71) are
connected to the heating system.
Cold water connection (73) and hot water outlet from
the water heater (74) are connected to hot water pipe.
When FIGHTER 2010 is not docked, (75) and (76)
should be plugged.
Pipe connection of the heating
system and hot water
VN
I
N
R
AG
DT
AY
K
S
AL 5
4
3
2
1
T6
RN
E
I
R
E
S. 5
4
3
2
1
6
V
VV
K
LEK
Art.nr.611???
2
1bar 3
04
52
99
98
80
47
74 73 71 70
51
Pipe installation must be carried out in accordance
with current norms and directives.
When the circulation pump is running, the flow in the
radiator circuit must not be completely stopped. In oth-
er words, in a system where the radiator flow might
stop because all thermostat valves are closed, there
must be a bypass valve to protect the circulation
pump.
The total volume is 240 litres, with 170 litres in the
water heater and 70 litres in the double-jacket space.
The pressure vessel in the VVM 240 is approved for
max 9.0 bar (0.9 MPa) in the water heater and 2.5 bar
(0.25 MPa) in the double jacket space.
An overflow pipe should be routed from the overflow
cup (99) to an appropriate drain. The diameter of the
overflow pipe should be the same as the waster water
pipe, Ø 32 (98) and should be routed downwards to
prevent water pockets and to be frost proof. The outlet
of the overflow pipe should be visible. See applicable
standards.
General
NOTE!
The pipe work must be flushed before
the electric boiler is connected, so that
any contaminants do not damage the
components parts.

Pipe connections16
VVM 240
To empty the water heater proceed as follows:
■Disconnect the overflow pipe from the drain con-
nection (79) and connect a hose to a draining-
pump instead. Where no draining pump is avail-
able, the water can be released into the overflow
cup (99).
■Open the safety valve (47).
■Open a hot water tap to let air into the system. If
this is not enough, undo a pipe coupling (74) on
the hot water side and pull out the pipe.
The hot water can be drained off through drain valve
(51) using an R15 (1/2") hose coupling. Remove the
cover (80) from the valve. Now screw on the hose
coupling and open valve (51).
Open safety valve (52) to let air into the system.
Draining the heating system Emptying
the water heater
Capacity diagram, heat medium pump and charge pump
Flöde
Tillgängligt tryck, kPa
kPa
l/h
10
200
00
20
400
30
600
40
800
50
1000
60
1200
70
1400 1600 1800 2000
l/s
0,50,40,30,20,10
Max flöde: 1700 l/h
Flow
Max. flow 1700 l/h
Available pressure kPa

Pipe connections 17
VVM 240
VN
I
N
R
AG
DT
AY
K
S
AL 5
4
3
2
1
T6
RN
E
I
RE
S. 5
4
3
2
1
6
V
VV
K
L
Typ
: Fighter 2010-4/8kW
Art.nr.
: 089261
Tillv.nr.ochtillv.år: se separat skylt
Spänning: 400V 3N+PE 50Hz
Märkström(A): 8.4 A
Inställningarav motorskydd: 7A
Värmebärardel
-Volym:
-Beräkningstryck:
-Provtryck:
-Beräkningstemp:
1.5 l
3 bar (0.3 MPa)
3,9 bar (0,39 MPa)
100°C
Köldmediemängd:
Köldtyp:
Provtryck,kylsystem:
2,2 kg
R407C
26 bar (2,6 MPa)

Madeby NIBE AB, SE-285 21 Markaryd, SWEDEN
75
Heat medium from
FIGHTER 2010
(VB-out)
Heat medium to
FIGHTER 2010
(VB-in)
Heat medium from FIGHTER 2010 (VB-out) is con-
nected to (75), charging connection from FIGHTER
2010 on VVM 240. Heat medium to FIGHTER 2010
(VB-in) is connected to (76), charging connection to
FIGHTER 2010 on VVM 240. Requisite safety equip-
ment is connected between FIGHTER 2010 and VVM
240, see section docking. When FIGHTER 2010 is not
docked, (75) and (76) should be plugged and the
charge pump (40) electrically disconnected. See the
section Electrical connection — Disconnecting the
charge pump.
Pipe connection between VVM 240 and FIGHTER 2010
FIGHTER 2010 VVM 240
76
40

Docking
VVM 240
18
The safety equipment must be installed in accordance
with current regulations for all docking options. See
www.nibe.se/vvs for more docking options.
General
VVM 240 docked to FIGHTER 2010
95
FIGHTER 2010
VVM 240
AV
AV
SÄK
SF
RC
TV
FG
RG
UG
VVM 240 controls FIGHTER 2010, which works with
floating condensing against the heating system.
FIGHTER 2010 works in stage 1 or stage 2 depending
on outdoor air temperature.
If FIGHTER 2010 cannot meet the heating require-
ment, additional heating is shunted in from VVM 240.
When the outside temperature drops below the set
stop temperature VVM 240 engages and takes over
the heating.
The controller in FIGHTER 2010 must be version 2.30
or later for docking to VVM 240. The version can be
seen on the FIGHTER 2010 display during start up.
F-2010
v 2.30