Nibe ACVM 270 User manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS
NIBE™ SPLIT ACVM 270
ACVM 270, AMS 10
MOS GB 1637-4
NIBE™ SPLIT ACVM 270
331183
LEK
LEK
LEK

LEK LEK
1
2
LEK
LEK
7
LEK
5
6
LEK
3
4
LEK
LEK
LEK LEK
AMS10-8
LEK
LEK
AMS10-12

For Home Owners
General
5
5Installation data
6Recovery
Information about the installation
7Product information
7Features of NIBE SPLIT ACVM 270
7Principle of operation NIBE SPLIT ACVM 270
Front panel, indoor module
9How to use the front panel
9Menu types
9Quick movement
9Key lock
Comfort setting heating
10General
10Operating status
10Changing the room temperature manually
11Default setting
12Readjusting the default settings
Comfort setting cooling
13General
13
Cooling operated from the outdoor sensor in operating
mode AutoK
13Controlling cooling mode using the room sensor
Comfort setting hot water
14General
14Available volume (ACVM 270 with AMS 10-8)
14Available volume (ACVM 270 with AMS 10-12)
14Prioritizing
14Extra Hot Water
Maintenance
15Checking the safety valves in ACVM 270
15Pressure gauge in ACVM 270
15Emptying the hot water heater
15Emptying the vessel
15Maintenance of AMS 10
15Saving tips
Dealing with comfort disruption
17Operating mode "Add. heat only"
17Emergency mode
Alarm indications
18General
18
What happens when an alarm appears on my sys-
tem?
18Recommended actions
18Acknowledging alarms
For the Installer
General information for the installer
19Transport and storage
19Supplied components
19Assembly
20Dimensioning expansion vessel
20Manual shunting
20Emptying the vessel
20Recommended installation order
Pipe installation
21General
21System requirements
21Dimensions and pipe connections
21Pump capacity diagram
21Connecting the climate system
22Connecting the hot water heater
22Connection of external heat source
23Waste exchanger part
23Connecting refrigerant pipes (not supplied)
26Dockings
Electrical installation
31General
31Electrical components
32Connecting the supply
32Miniature circuit-breaker
32Temperature limiter
32Connection between ACVM 270 and AMS 10
33Setting max power, electrical addition
33Setting max boiler temperature
33EBV board, terminal and wiring diagram
33Connecting the outside sensor
33Connecting the current limiter
34Connection of centralised load control/tariff
34Connecting external contacts
34Alarm outputs
34Docking specific connection
Start-up and inspection
36Preparations
36Commissioning
36Setting system flow heating
36Setting system flow cooling
37Commissioning ACVM 270 without AMS 10
37
Checking external addition with internal immersion
heater blocked
37
Checking external addition (not controlled by
ACVM 270) with internal immersion heater as backup
37Inspection of the installation
37Cleaning the particle filter
37Secondary adjustment
38Checklist: Checks before commissioning
Miscellaneous
Control
39Display
3NIBE™ SPLIT ACVM 270
Table of Contents

39Menu types
39Menu management
40Menu tree
48Main menus
491.0 [N] Hot water temp.
502.0 [N] Supply temp.
513.0 [N] Supply temp. 2
524.0 [N] Outdoor temp.
525.0 [N] Heat pump
536.0 [N] Room temperature*
537.0 [N] Clock
548.0 [N] Other adjustments
559.0 [S] Service menus
Alarm list
61Acknowledging alarms
61Alarm with automatic reset
61Temperature limiter alarm
61ACVM 270 alarm
62AMS 10 alarm
64Hot water alarm
64Supply alarm
65Outdoor sensor alarm
65Circulation pump alarm
Electrical circuit diagram
66ACVM 270
71AMS 10-8
71AMS 10-12
Component positions
73Indoor unit
75Outdoor unit
Temperature sensor
77Sensor placement
77Data for sensor in AMS 10
77Data for sensor in ACVM 270
Dimensions
78Indoor module
79Outdoor module
Technical specifications
81Technical specifications
85Standard test, EN14511
85Standard test, AMS 10-8
85Standard test, AMS 10-12
Energy labelling
86Information sheet
86Data for energy efficiency of the package
87Technical documentation
Accessories
90
Safety precautions
91Caution
91Care
92Especially for units intended for R410A
93Item register
NIBE™ SPLIT ACVM 2704
Table of Contents

General
NIBE SPLIT ACVM 270 is a system for heating, cooling and producing hot water for small houses. The system consists of an
outdoor module (AMS 10), which utilises the energy in the outdoor air and sends it to the indoor module (ACVM 270),
which takes care of the regulation and heat distribution in the house.
In order to gain the greatest benefit from the NIBE SPLIT ACVM 270 system, please refer to the 'For Home Owners' chapter
within this Installation and Maintenance Manual.
NIBE SPLIT ACVM 270 is a quality system offering a long service life and reliable operation.
Installation data
Completed by the installation engineer when the sys-
tem is installed
Installation data and installation check list on page 38
must be filled in by the installer in order for the warranty
to apply.
Serial number, must always be stated in all correspondence with NIBE
Outdoor unit:Indoor unit:
Installation date:
Check list, page 38, filled in
Installation engineers:
Heating
Radiator Floor Fan convector
Cooling
Other Floor Fan convector Not available
External heat source
Solar Gas Oil Wood Pellets Electricity
Accessories
KVR 10 RE 10 RG 10 ESV 22 VCC 22 ACK 22 SRB 22
Settings
Enter deviations from default settings.
SettingMenuSettingMenu
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Date __________ Signed __________________________________
5NIBE™ SPLIT ACVM 270
For Home Owners
General

This appliance can be used by children aged
from 8 years and above and persons with
reduced physical, sensory or mental capabil-
ities or lack of experience and knowledge if
they have been given supervision or instruc-
tion concerning use of the appliance in a
safe way and understand the hazards in-
volved. Children shall not play with the appli-
ance. Cleaning and user maintenance shall
not be made by children without supervision.
Rights to make any design or technical
modifications are reserved.
©NIBE 2016.
Recovery
Leave the disposal of the packaging to the installer
who installed the product or to special waste
stations.
Do not dispose of used products with normal
household waste. It must be disposed of at a
special waste station or dealer who provides this type of
service.
Improper disposal of the product by the user results in
administrative penalties in accordance with current legis-
lation.
NIBE™ SPLIT ACVM 2706
For Home Owners
General

Information about the installation
Product information
NIBE SPLIT ACVM 270 is a complete modern heat pump
system that offers effective energy saving and reduced
carbon dioxide emissions. Climate control is safe and eco-
nomical with integrated hot water heater, immersion
heater, circulation pump and control system in the indoor
module.
The heat is retrieved from the outdoor air through an
outdoor module (AMS 10), where the refrigerant, which
circulates in a closed system, transfers the heat from the
heat source (outdoor air) to the indoor module
(ACVM 270). This eliminates the need for bore holes and
coils in the ground.
Features of NIBE SPLIT ACVM 270
■Optimal annual heating factor thanks to the inverter
controlled compressor.
■Outdoor module with compact dimensions.
■Speed controlled circulation pump.
■Optimized operating costs. The speed of the compressor
is adjusted according to the demand.
■Integrated coil water heater in ACVM 270.
■Integrated clock for scheduling extra hot water and
temperature lowering/increasing the flow line temper-
ature.
■Prepared for control of two climate systems.
■Integrated active cooling function.
■Possible to connect external heat sources.
Principle of operation NIBE SPLIT ACVM 270
12
4
3
Function
NIBE SPLIT ACVM 270 is a system that can produce heating,
hot water and cooling.
The principle during heating can be simplified as follows:
1. The refrigerant in AMS 10 retrieves heat from the
outdoor air then compresses it, which increases the
temperature further.
2. The hot refrigerant (now in gas state) is routed into
ACVM 270.
3. The refrigerant releases the heat for further distribu-
tion in the system.
4. The refrigerant (now in liquid state) is routed back to
AMS 10 and the process is repeated.
By reversing the process, thereby allowing the refrigerant
in AMS 10 to retrieve the heat from the water and release
it into the outdoor air, the heat pump can, if necessary,
cool instead.
ACVM 270 determines when AMS 10 is to work and not
to work, using the collated data from the temperature
sensor. In the event of extra heat demands, ACVM 270 can
connect additional heat in the form of the internal immer-
sion heater, or any connected external addition.
7NIBE™ SPLIT ACVM 270
For Home Owners
Information about the installation

Front panel, indoor module
A BI II III I II
13.43
1.0
A
5 0 . 0 ° C
- Scroll forward in the menu system.
- Increase the value of the selected
parameter
- Scroll back in the menu system.
- Reduce the value of the selected
parameter
- Select lower menu in the menu system.
- Parameter change activated
- Parameter change confirmed
During normal operation, the status lamp
lights green.
In the event of an alarm, it lights red.
The change does not need to be
confirmed with the Enter button.
Pressing the button (the change does not
need to be confirmed with the enter
button).
-Current operating mode is shown in the
display.
-Further button pressing changes
operating mode.
Press the enter button to return to the
normal display mode.
For information about the various operating
modes, see the different sections regarding
comfort settings.
Pressing the button takes you directly to
menu 1.0.
- Heating or cooling demand
"A" Heating mode
"B" Cooling mode
If the electrical addition is connected
”I” Electrical step 1
”II” Electrical step 2
”II” Electrical step 3
More than one electrical step can be connected
at the same time.
Additional heat symbol
Compressor symbol
Hot water temp.
Operating status
Extra hot water (XHW)
Menu 1.0
Normal mode
Switch
1
All control functions connected.
Shutdown
0
Only the circulation pump and
electrical addition (electrical step 2)
are operational.
Emergency mode
Hot water symbol
The heat pump charges hot water.
Temporary temperature increase in
progress.
Time based temperature increase in
progress, e.g. periodic.
"A"
"B"
A BI II III I II I II
A B
A BI II III I II I II
A B A BI II III I II
50.0°C
V a r m v attentemperatur
13.43
1.0 P
50.0°C
V a r m v attentemperatur
13.43
1.0 P13.43 1.0 P
A
50.0°C
V a r m v attentemperatur
A BI II III I II I II
A B
13.43
1.0 P
50.0°C
r tt
r tt
Circulation pump symbol
Circulation pump in operation.
With two circulation pumps (requires
accessory ESV ), the operating pump is
also indicated.
Climate system symbol
Heating/cooling in progress.
A BI II III I II I II
A B
A BI II III I II I II
A B A BI II III I II
50.0°C
V a r m v attentemperatur
13.43
1.0 P
50.0°C
V a r m v attentemperatur
13.43
1.0 P13.43 1.0 P
A
50.0°C
V a r m v attentemperatur
A BI II III I II I II
A B
13.43
1.0 P
50.0°C
r tt
r tt
Description of current display parameter
Information symbols
Menu number
A BI II III I II I II
A B
A BI II III I II I II
A B A BI II III I II
50.0°C
V a r m v attentemperatur
13.43
1.0 P
50.0°C
V a r m v attentemperatur
13.43
1.0 P13.43 1.0 P
A
50.0°C
V a r m v attentemperatur
A BI II III I II I II
A B
13.43
1.0 P
50.0°C
r tt
r tt
Key lock activated.
A BI II III I II I II
A B
A BI II III I II I II
A B A BI II III I II
50.0°C
V a r m v attentemperatur
13.43
1.0 P
50.0°C
V a r m v attentemperatur
13.43
1.0 P13.43 1.0 P
A
50.0°C
V a r m v attentemperatur
A BI II III I II I II
A B
13.43
1.0 P
50.0°C
r tt
r tt
Plus button
Minus button
See the section "Control – General"
Enter button
Status lamp
A BI II III I II I II
A B
A BI II III I II I II
A B A BI II III I II
50.0°C
V a r m v attentemperatur
13.43
1.0 P
50.0°C
V a r m v attentemperatur
13.43
1.0 P13.43 1.0 P
A
50.0°C
V a r m v attentemperatur
A BI II III I II I II
A B
13.43
1.0 P
50.0°C
r tt
r tt
See the section "Control – General"
See the section "Control – General"
- Turning clockwise (+) increases the
room temperature (if room sensors are
not used).
When the knob is turned menu 2.0 is
shown on the display and the value for
the current supply temperature changes.
Offset heating curve
Defrosting symbol
Defrosting in progress.
A BI II III I II
13.43
1.0
A
5 0 . 0 ° C
Displayed with all activated scheduling.
Clock
See the section "Control – Menu 7.0"
NIBE™ SPLIT ACVM 2708
For Home Owners
Front panel, indoor module

How to use the front panel
All the most common settings are made from the panel
as well as control computer instructions such as comfort
etc. that you require the heat pump system to fulfil.
In order for the installation to be used optimally, certain
basic settings must have been made (see page 11). In ad-
dition the installation in general must be carried out ac-
cording to the instructions and manufacturer's recommend-
ations.
Menu 1.0 (temperature in the water heater) is normally
shown on the display.
The plus and minus buttons and the enter button
are used to scroll through the menu system as well
as to change the set value in some menus.
Menu types
Control is divided into different menu types depending
on how ”deep” into the controls you need to go.
■Normal [N]: The settings you as a customer often
need.
■Extended [U]: Shows all detailed menus except the
service menus.
■Service [S]: Shows all menus.
The menu type is changed from menu 8.1.1
Quick movement
To quickly return to the main menu from a sub menu,
press one of the following buttons:
Key lock
A key lock can be activated in the main menus by simultan-
eously pressing the plus and the minus buttons. The key
symbol will then be shown on the display.
A BI II III I II
13.43
1.0
A
5 0 . 0 ° C
The same procedure is used to deactivate the key lock.
9NIBE™ SPLIT ACVM 270
For Home Owners
Front panel, indoor module

Comfort setting heating
General
The indoor temperature depends on several factors.
■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 climate system must be
started. The colder it is outside, the warmer radiators
and under floor heating systems must be.
Controlling heat production
Normally, the heat pump heats the water (heating medi-
um) to the temperature required at a certain outdoor
temperature. This occurs automatically on the basis of the
collected temperature values from the outdoor temperat-
ure sensor and sensors on the lines to the climate system
(flow line sensors). Extra accessories such as room temper-
ature sensors, can influence the temperature.
However, the correct default settings must be made on
the heat pump first, see the section “Default settings”.
The temperature information that the outdoor sensor
(mounted on an exterior wall of the house) sends to the
heat pump’s control computer senses variations in the
outdoor temperature early on. It does not have to be cold
inside the house before the control system is activated, as
soon as the average outdoor temperature drops outside,
the temperature of the water to the climate system (supply
temp.) inside the house is increased automatically.
The heat pump's supply temperature (menu 2.0) will hover
around the theoretical required value, which is in brackets
on the display.
Temperature of the climate system
The temperature of the climate system in relation to the
outdoor temperature can be modified by using the "Offset
heating curve” knob on the heat pump’s front panel.
Operating status
The “Operating mode” button is used to set the re-
quired 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 current operating mode is shown on the front panel
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 button is pressed.
The addition is only used for anti-freeze mode, if it is deac-
tivated in the menu system. This applies to all operating
modes.
The different operating modes are:
1. ”Auto”
■ACVM 270 automatically selects the operating mode
by taking the outdoor temperature into account.
This means that the operating mode switches
between "Heating" and "Hot water". Current oper-
ating mode is shown within brackets.
■The circulation pump is permitted to operate when
there is a need.
2. ”AutoK”*
■ACVM 270 selects operating mode automatic
(cooling can also be selected now) with regard to
the outdoor temperature. This means that the oper-
ating mode switches between "Heating", "Cooling"
and "Hot water".
■The circulation pump is permitted to operate when
there is a need.
3. "Heat" / "Heat addition"
■Only heating and cooling produced.
■The circulation pump is in operation the entire time.
■If "Heat addition" is shown the addition is permitted
to operate if necessary.
4. "Cooling"* / "Super cooling"
■If addition is permitted, "Super cooling" is displayed.
The compressor then only runs in cooling mode.
Otherwise, the mode switches to cooling or produ-
cing hot water.
■The circulation pump is in operation the entire time.
■Hot water is only produced by the immersion heater.
5. "Hot water"
■Only hot water is produced.
■Only the compressor is operational.
6. ”Add. heat only”
■Compressor blocked. The function is activated by
pressing in the ”operating mode button” for 7
seconds.
7. Deactivate the function by pressing the "Operating
mode" button for 7 seconds once again.
* To use the cooling functions, the system must be con-
structed to withstand low temperatures and "Cooling"
must be activated in menu 9.3.3.
Changing the room temperature manually
If you want to temporarily or permanently increase or
lower the indoor temperature turn the ”Offset heating
curve” knob clockwise or anticlockwise. One line approx-
imately represents a 1 degree change in room temperat-
ure.
NOTE
An increase in the room temperature may be inhib-
ited by the radiator or underfloor heating thermo-
stats, if so these must be turned up.
NIBE™ SPLIT ACVM 27010
For Home Owners
Comfort setting heating

Default setting
The basic heating is set using menu 2.1.2 and with the
“Offset, heating curve” knob.
If the required room temperature is not obtained, readjust-
ment may be necessary.
If you do not know the correct settings use the basic data
from the automatic heating control system diagram op-
posite.
A BI II III I II
13.43
1.0
A
5 0 . 0 ° C
Offset heating curve
Heating curve
2 . 1 . 2
9
Menu 2.1.2 Heating curve
NOTE
Wait one day between settings so that the temperat-
ures have time to stabilise.
Setting with diagrams
The diagram is based on the dimensioned outdoor tem-
perature in the area and the dimensioned supply temper-
ature of the climate system. When these two values
“meet”, the heating control's curve coefficient can be read.
This is set under menu 2.1.2, "Heating curve". Limitations,
which are not in the diagrams, are included in the control
system's permitted min and max temperatures.
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
- 40
UTETEMPERATUR
- 10
0
10
- 5
+ 5
30
40
50
60
70
FRAMLEDNINGSTEMPERATUR
- 20 - 30
FÖRSKJUTNING
VÄRMEKURVA (-2)
VÄRMEKURVA
30
40
50
60
70
FRAMLEDNINGSTEMPERATUR
- 40
UTETEMPERATUR
- 10
0
10 - 20 - 30
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
1514 13 12 11 10
8
7
6
5
4
3
2
1
- 40
UTETEMPERATUR
- 10
0
10
- 5
+ 5
30
40
50
60
70
FRAMLEDNINGSTEMPERATUR
- 20 - 30
FÖRSKJUTNING
VÄRMEKURVA (+2)
9
VÄRMEKURVA
VÄRMEKURVA
- 5
+ 5
FÖRSKJUTNING
VÄRMEKURVA (0)
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
- 40 °C
OUTSIDE TEMPERATURE
- 10
0
10
- 5
+ 5
30
40
50
60
70
°C
FLOW TEMPERATURE
- 20 - 30
HEATING
CURVE OFFSET (-2)
HEATING CURVE
30
40
50
60
70
°C
FLOW TEMPERATURE
- 40 °C
OUTSIDE TEMPERATURE
- 10
0
10 - 20 - 30
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
1514 13 12 11 10
8
7
6
5
4
3
2
1
- 40 °C
OUTSIDE TEMPERATURE
- 10
0
10
- 5
+ 5
30
40
50
60
70
°C
FLOW TEMPERATURE
- 20 - 30
HEATING
CURVE OFFSET (+2)
9
HEATING CURVE
HEATING CURVE
- 5
+ 5
HEATING
CURVE OFFSET (0)
HEATING CURVE
OUTSIDE TEMPERATURE
SUPPLY TEMPERATURE
OFFSET HEAT CURVE -2
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
- 40
UTETEMPERATUR
- 10
0
10
- 5
+ 5
30
40
50
60
70
FRAMLEDNINGSTEMPERATUR
- 20 - 30
FÖRSKJUTNING
VÄRMEKURVA (-2)
VÄRMEKURVA
30
40
50
60
70
FRAMLEDNINGSTEMPERATUR
- 40
UTETEMPERATUR
- 10
0
10 - 20 - 30
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
1514 13 12 11 10
8
7
6
5
4
3
2
1
- 40
UTETEMPERATUR
- 10
0
10
- 5
+ 5
30
40
50
60
70
FRAMLEDNINGSTEMPERATUR
- 20 - 30
FÖRSKJUTNING
VÄRMEKURVA (+2)
9
VÄRMEKURVA
VÄRMEKURVA
- 5
+ 5
FÖRSKJUTNING
VÄRMEKURVA (0)
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
- 40 °C
OUTSIDE TEMPERATURE
- 10
0
10
- 5
+ 5
30
40
50
60
70
°C
FLOW TEMPERATURE
- 20 - 30
HEATING
CURVE OFFSET (-2)
HEATING CURVE
30
40
50
60
70
°C
FLOW TEMPERATURE
- 40 °C
OUTSIDE TEMPERATURE
- 10
0
10 - 20 - 30
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
1514 13 12 11 10
8
7
6
5
4
3
2
1
- 40 °C
OUTSIDE TEMPERATURE
- 10
0
10
- 5
+ 5
30
40
50
60
70
°C
FLOW TEMPERATURE
- 20 - 30
HEATING
CURVE OFFSET (+2)
9
HEATING CURVE
HEATING CURVE
- 5
+ 5
HEATING
CURVE OFFSET (0)
HEATING CURVE
OUTSIDE TEMPERATURE
SUPPLY TEMPERATURE
OFFSET HEAT CURVE 0
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
- 40
UTETEMPERATUR
- 10
0
10
- 5
+ 5
30
40
50
60
70
FRAMLEDNINGSTEMPERATUR
- 20 - 30
FÖRSKJUTNING
VÄRMEKURVA (-2)
VÄRMEKURVA
30
40
50
60
70
FRAMLEDNINGSTEMPERATUR
- 40
UTETEMPERATUR
- 10
0
10 - 20 - 30
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
1514 13 12 11 10
8
7
6
5
4
3
2
1
- 40
UTETEMPERATUR
- 10
0
10
- 5
+ 5
30
40
50
60
70
FRAMLEDNINGSTEMPERATUR
- 20 - 30
FÖRSKJUTNING
VÄRMEKURVA (+2)
9
VÄRMEKURVA
VÄRMEKURVA
- 5
+ 5
FÖRSKJUTNING
VÄRMEKURVA (0)
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
- 40 °C
OUTSIDE TEMPERATURE
- 10
0
10
- 5
+ 5
30
40
50
60
70
°C
FLOW TEMPERATURE
- 20 - 30
HEATING
CURVE OFFSET (-2)
HEATING CURVE
30
40
50
60
70
°C
FLOW TEMPERATURE
- 40 °C
OUTSIDE TEMPERATURE
- 10
0
10 - 20 - 30
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
1514 13 12 11 10
8
7
6
5
4
3
2
1
- 40 °C
OUTSIDE TEMPERATURE
- 10
0
10
- 5
+ 5
30
40
50
60
70
°C
FLOW TEMPERATURE
- 20 - 30
HEATING
CURVE OFFSET (+2)
9
HEATING CURVE
HEATING CURVE
- 5
+ 5
HEATING
CURVE OFFSET (0)
HEATING CURVE
OUTSIDE TEMPERATURE
SUPPLY TEMPERATURE
OFFSET HEAT CURVE +2
11NIBE™ SPLIT ACVM 270
For Home Owners
Comfort setting heating

Readjusting the default settings
If the required room temperature is not obtained, readjust-
ment may be necessary.
Cold weather conditions
■When the room temperature is too low, the “Heating
curve” value is increased in menu 2.1.2 by one increment.
■When the room temperature is too high, the “Heating
curve” value is decreased in menu 2.1.2 by one incre-
ment.
Warm weather conditions
■If the room temperature is low, increase the “Heating
curve offset” setting by one step clockwise.
■If the room temperature is high, reduce the “Heating
curve offset” setting by one step anti-clockwise.
NIBE™ SPLIT ACVM 27012
For Home Owners
Comfort setting heating

Comfort setting cooling
General
The condition in order for cooling to be activated is that
"On" is selected in menu 9.3.3 Cooling system.
NOTE
The climate system must manage cooling operation.
Settings must be made by the installer when commis-
sioning the system.
If a room sensor is connected, it starts and stops cooling
together with the outdoor temperature. The lowest calcu-
lated supply temperature is set in menu 2.2.4 Min supply
cooling.
If a room sensor is connected, it starts and stops cooling
together with the outdoor temperature. The lowest calcu-
lated supply temperature is set in the menu.
Cooling operated from the outdoor sensor in
operating mode AutoK
If the cooling system is set to "On" in menu 9.3.3 and the
outdoor temperature is greater or equivalent to the set
start temperature for cooling in menu 8.2.4, cooling starts.
Cooling stops when the outdoor temperature drops below
the set value minus the set value in menu 8.2.5.
The current supply line temperature is determined from
the selected cooling curve in menu 2.2.2 and the offset
for cooling curve, menu 2.2.1. Limitations, which are not
in the diagram, are included in the control system's permit-
ted min temperature.
0
0
C
20 C
30
5
10
20
Beräknad
framlednings-
temp.
Utetemp.
40
15
Utetemperatur
Be räknad framledningstemperatur
20 30 40
20
10
0
k = 1
k = 2
k = 3
k=1
k=2
k=3
+ 5
- 5
FÖRSKJUTNING
KYLKURVA (0)
Outside temperature
Calculated flow
temperature
Cooling curve offset (0)
Controlling cooling mode using the room
sensor
If RG 10 is present, the condition for cooling is that the
room temperature has exceeded the set room temperature
(menu 6.3) by the set value in menu 8.2.5 and that the
outdoor temperature is equal to or exceeds the set outdoor
temperature value (menu 8.2.4).
When the room temperature has dropped below the set
room temperature in menu 6.3 by the set value in menu
8.2.5 or the outdoor temperature falls below the set value
in menu 8.2.4 by the set value in menu 8.2.5, cooling
switches off.
13NIBE™ SPLIT ACVM 270
For Home Owners
Comfort setting cooling

Comfort setting hot water
General
The integrated water heater is of coil model and is heated
by circulating water, which is heated by the heat pump.
During “normal” consumption it is enough to run the heat
pump’s compressor to supply the different tapping points
of the house with hot water. The temperature of the hot
water in the water heater then varies between the set
values.
Under section 1.0 [N] Hot water temp. on page 49 there
is a complete description of menu settings for hot water
temperatures.
Available volume (ACVM 270 with AMS 10-8)
0
100
200
300
400
8 l/min
12 l/min
16 l/min
Higher Lower
Domestic hot water volume at different water flows, 40 °C (litre)
Normal
8 l/ min
12 l/ min
16 l/ min
Savings
Factory setting
0
100
200
300
400
8 l/min
12 l/min
16 l/min
Available volume (ACVM 270 with AMS 10-12)
0
100
200
300
400
8 l/min
12 l/min
16 l/min
0
100
200
300
400
8 l/min
12 l/min
16 l/min
Domestic hot water volume at different water flows, 40 °C (litre)
8 l/ min
12 l/ min
16 l/ min
Higher LowerNormal
Savings
Domestic hot water volume at different water flows, 40 °C (litre)
Factory setting
Prioritizing
If the water within the water heater requires heating, the
heat pump prioritises this and shifts to hot water mode
with the entire heat pump output.
In this mode, there is no heating or cooling.
Prioritizing can be affected via settings in the front panel.
See "1.0 [N] Hot water temp." on page 49.
Extra Hot Water
In all ”Extra hot water” functions, the temperature of the
hot water increases temporarily. The temperature is first
increased to an adjustable level by the compressor (menu
1.5) and then the electric additional heat increases until
the stop temperature is reached (menu 1.4).
Temporary ”Extra hot water” is activated manually, whilst
time based extra hot water is activated using the settings
made in the control computer.
When:
■”A” appears above the
A BI II III I II
13.43
1.0
A
5 0 . 0 ° C
icon, temporary extra hot
water is active.
■””B” appears above the
A BI II III I II
13.43
1.0
A
5 0 . 0 ° C
icon, when time based extra
hot water is active.
NOTE
”Extra hot water” usually means that the electrical
addition has been activated and therefore increases
the electrical consumption.
”Extra hot water” can be activated in three different
ways:
1. Periodic time based extra hot water
■Interval between increases is selected in menu 1.7.
Menu 1.8 shows when the next increase is due.
■The increased temperature is maintained by the
electrical addition for one hour.
2. Schedule time based extra hot water
■The start and stop times for the day of the week that
the increase is required are set in the sub menus for
menu 7.4.0.
■The increased temperature is maintained by the
electrical addition for the selected period.
3. Temporary extra hot water
■The current ”extra hot water” mode is shown on the
display (A) when the button is pressed and by
pressing the button again the mode changes
between 3 hours and standby mode.
■The increased temperature is maintained by the
electrical addition until the period of time has ex-
pired.
NIBE™ SPLIT ACVM 27014
For Home Owners
Comfort setting hot water

Maintenance
ACVM 270 and AMS 10 require minimal maintenance after
commissioning.
NIBE SPLIT ACVM 270 contains many components and is
why monitoring functions are integrated to help you.
If something abnormal occurs, a message appears about
malfunctions in the form of different ”alarm” texts in dis-
play.
Checking the safety valves in ACVM 270
ACVM 270 has been equipped with a safety valve for the
water heater as well as a safety valve for the climate system
by the installer.
The climate system's safety valve
LEK
FL2BP5
The climate system's safety valve (FL2) must be completely
sealed. Checks must be carried out regularly as follows:
■Open the valve.
■Check that water flows through the valve. If this does
not happen, replace the safety valve.
■Close the valve again.
■The climate system may need to be refilled after checking
the safety valve, see the section “Filling the climate sys-
tem”. Contact your installer for refilling the climate sys-
tem.
Hot water heater safety valve
The water heater's safety valve sometimes releases a little
water after hot water usage. This is because the cold water,
which enters the heater to replace the hot water, expands
when heated causing the pressure to rise and the safety
valve to open.
Also check the water heater safety valve regularly. The
appearance and location of the safety valve differs
between different installations. Follow the cold water pipe
to locate the safety valve. Contact your installer for inform-
ation.
Pressure gauge in ACVM 270
The working range of the climate system is normally 0.5 –
1.5 bar when the system is closed. Check this on the pres-
sure gauge (BP5).
Emptying the hot water heater
The water heater is of the coil type and is drained using
the siphon principle. This can be done either via the drain
valve on the incoming cold water pipe or by inserting a
hose into the cold water connection. See page 20.
Emptying the vessel
Contact your installer if the vessel in ACVM 270 needs
emptying.
Maintenance of AMS 10
AMS 10 is equipped with control and monitoring equip-
ment, however some exterior maintenance is still neces-
sary.
Make regular checks throughout the year that the inlet
grille is not clogged by leaves, snow or anything else.
During the cold months of the year, check to make sure
that there isn't a build up of ice or frost under AMS 10.
Strong wind combined with heavy snowfall can block the
intake and exhaust air grilles. Make sure that there is no
snow on the grilles.
Also check that the condensation water drain under
AMS 10 is not blocked.
If necessary the outer casing can be cleaned using a damp
cloth. Care must be exercised so that the heat pump is not
scratched when cleaning. Avoid spraying water into the
grilles or the sides so that water penetrates into AMS 10.
Prevent AMS 10 coming into contact with alkaline cleaning
agents.
!
WARNING!
Rotating fan in AMS 10.
Saving tips
Your NIBE SPLIT ACVM 270 installation produces heat and
hot water according to your needs. It also attempts to carry
out all requirements with all available ”aids” from the
control settings made.
The indoor temperature is naturally affected by the energy
consumption. Therefore, take care not to set a temperature
higher than necessary.
Other known factors that affect the energy consumption
are, for example, hot water consumption and the insula-
tion level of the house, as well as the level of comfort you
require.
Also remember:
■Open the thermostat valves completely (except in the
rooms that are to be kept cooler for various reasons, e.g.
bedrooms).
Thermostat valves in the radiators and floor loops can
negatively affect the energy consumption. They slow the
flow in the climate system, which the heat pump wants to
compensate with increased temperatures. It then works
harder and consumes more electrical energy.
15NIBE™ SPLIT ACVM 270
For Home Owners
Maintenance

Dealing with comfort disruption
Use the following list to find and remedy any heating or
hot water problems.
ActionCauseSymptom
Check and replace blown fuses.Circuit or main MCB tripped.Low hot water temperature or a lack of
hot water. Check and replace any blown circuit and
main fuses.
Heat pump and immersion heater do not
heat.
Reset the earth circuit-breaker, if the earth
circuit-breaker trips repeatedly, call an
electrician.
Possible earth circuit-breaker tripped.
Set the switch to 1.Switch(SF1) set in 0 mode.
Wait a few hours and check if the hot
water temperature rises.
Large hot water demand.
Adjust the start temperature setting in
menu 1.2.
Too low start temperature setting on the
control system.
Reset the earth circuit-breaker, if the earth
circuit-breaker trips repeatedly, call an
electrician.
Possible earth circuit-breaker tripped.Low room temperature.
Check and replace any blown circuit and
main fuses.
Heat pump and immersion heater do not
heat.
Adjust the setting.Incorrect setting of "Curve slope", "Heating
curve, offset" and/or "Cooling curve, off-
set".
Check and replace blown fuses.Circuit or main MCB tripped.
Change operating mode to ”Auto” or
"AutoK".
Heat pump in incorrect operating mode
”Hot water” or "Cooling".
Switch off one/several of the power con-
sumers.
The current limiter has restricted the cur-
rent because many power consumers are
being used in the property.
Adjust the setting.Incorrect setting of "Curve slope", "Heating
curve, offset" and/or "Cooling curve, off-
set".
High room temperature.
Change operating mode to ”AutoK”.Heat pump in incorrect operating mode.
Adjust the settings. Check menu 2.2.1,
2.2.2 and 8.2.4.
Incorrect settings for cooling.
Wait 30 minutes and check if the com-
pressor starts.
Minimum time between compressor starts,
alternatively time after power switch on
not achieved.
The compressor does not start.
See section ”Alarms”.Alarm tripped.
Activate operating mode ”Only additional
heat”.
Alarm cannot be reset.
Check and replace any blown circuit and
main fuses.
Display not lit.
Check that the circuit breaker to the in-
door unit is not off.
Check that the switch (SF1) is in normal
position (1).
NIBE™ SPLIT ACVM 27016
For Home Owners
Dealing with comfort disruption

Operating mode "Add. heat only"
In the event of malfunctions that cause a low indoor tem-
perature, you can normally activate "Add. heat only" in
ACVM 270, which means that heating only occurs with
the immersion heater.
Activate the mode by holding in the operating mode
button for 7 seconds.
Note that this is only a temporary solution, as heating with
the immersion heater does not make any savings.
Deactivate the function by pressing the "Operating mode"
button for 7 seconds once again.
Emergency mode
Emergency mode is activated by setting the switch to
” ". It is used when the control system and, thereby,
operating mode "Add. heat only" does not function as it
should. Emergency mode is activated by setting switch
(SF1) to ” ”.
The following applies in emergency mode:
■The front panel is not lit and the control computer in
ACVM 270 is not connected.
■AMS 10 is off and only the circulation pump and immer-
sion heater in ACVM 270 are active.
■A power step of 4 kW is connected. The immersion
heater is controlled by a separate thermostat (BT30).
■The automatic heating control system is not operational,
so manual shunt operation is required. Call installer.
17NIBE™ SPLIT ACVM 270
For Home Owners
Dealing with comfort disruption

Alarm indications
General
There are many monitoring functions integrated in
NIBE SPLIT ACVM 270 to alert you to any malfunctions,
the control computer transmits alarm signals that can be
read from the front panel display.
What happens when an alarm appears on my
system?
■The background lighting in the display starts flashing
and the status lamp lights red.
■Compressor alarms and outdoor sensor errors change
the operating mode to ”Anti freeze” and reduce the
supply temperature to the minimum permitted temper-
ature to notify you that something is wrong.
Different types of alarms
■Alarms with automatic reset (do not need to be acknow-
ledged when the cause has disappeared).
■Existing alarms that require corrective action by you or
the installer.
■A complete list of alarms is on page 61.
Recommended actions
1. Read off which alarm has occurred from the heat
pump's display.
2. As a customer you can rectify certain alarms. See the
table below for relevant actions. If the alarm is not
rectified, or is not included in the table, contact your
installer.
Check/remedy before installers/service
technicians are called
Alarm descriptionAlarm text on the display
Check that the thermostats for the radiat-
ors/under-floor heating systems are not
closed (only during cooling operation).
Tripped low pressure pressostat.LP-LARM
Check that the thermostats for the radiat-
ors/under-floor systems are not closed.
Tripped high pressure pressostat.HP-LARM
If cooling is in progress: Check that the air
flow to AMS 10 is not obstructed.
Check that any circuit breakers to the out-
door unit are not off.
Outdoor unit not powered / Communica-
tion cut
OU power failure / OU Com. error
Check and replace any blown circuit and
main fuses.
Display not lit.
Check that the circuit breaker to the indoor
unit is not off.
Check that the switch (SF1) is in normal
position (1).
Acknowledging alarms
No harm in acknowledging an alarm. If the cause of the
alarm remains, the alarm recurs.
■When an alarm has been triggered, it can be acknow-
ledged by switching ACVM 270 off and on using the
switch (SF1). Note that when the power is switched on
there is a 30 minute delay before the heat pump restarts.
Alternatively, the alarm can be acknowledged in menu
9.7 (service menu).
■When the alarm cannot be reset using the switch (SF1),
the operating mode, "Add. heat only", can be activated
to return to a normal temperature level in the house.
This is most easily carried out by holding the ”Operating
mode” button pressed in for 7 seconds.
■Deactivate the function by pressing the "Operating
mode" button for 7 seconds once again.
NOTE
Recurring alarms mean that there is a fault in the in-
stallation.
Contact your installer!
NIBE™ SPLIT ACVM 27018
For the Installer
Alarm indications

General information for the installer
Transport and storage
Outdoor module AMS 10
AMS 10 should be transported and stored vertically.
If the heat pump is to be lifted using lifting straps without
packaging, protect as illustrated.
The right-hand side of the heat pump (seen from the front)
is heavier.
Indoor module ACVM 270
ACVM 270 can be transported either vertically or horizont-
ally. However it must be stored vertically and in dry condi-
tions.
Supplied components
Straps for single phase connec-
tion
Outside sensor
LEK
LEK
LEK
Safety valve
with manometer
Current sensor, 3-phase
Cable tiesStraight connection
to safety valve
The enclosed kit is located behind the front service cover
in ACVM 270.
Assembly
Outdoor module AMS 10
Position AMS 10 outdoors secured to a firm surface,
preferably concrete foundation with ground stand near
walls or wall mounting.
It must be positioned so that the lower edge of the evap-
orator is at the level of the average local snow depth,
however a minimum of 200 mm. AMS 10 should not be
positioned next to noise sensitive walls, for example, next
to a bedroom. Also ensure that the location does not in-
convenience the neighbours. Care must be exercised so
that the heat pump is not scratched during installation.
Large amounts of condensation water, as well as melt
water from defrosting, can be produced. Provide good
drainage at the installation area and make sure water
cannot run out onto paths or the like during periods that
ice can form.
The distance between AMS 10 and the house wall must
be at least 150 mm. Ensure that there is free space above
AMS 10 of at least 1,000 mm. AMS 10 must not be placed
so that recirculation of the outdoor air is possible.
AMS 10 must not be placed in a windy location where
it is exposed to direct strong winds. This reduces out-
put and impairs efficiency and also negatively affects
the defrosting function.
For wall installation, ensure that vibrations do not affect
the inside of the house. Also ensure that the wall and
mounting can take the weight of the heat pump.
Weak wind: > 0.5 km
Strong wind: > 3 km
Weak wind: > 1 km
Strong wind: > 10 km
Indirect offshore wind Direct offshore wind
150 mm
300 mm
300 mm
5 m
5000 mm
300 mm300 mm
150 mm
19NIBE™ SPLIT ACVM 270
For the Installer
General information for the installer

Indoor module ACVM 270
■It is recommended that ACVM 270 is installed in a room
with existing floor drainage, most suitably in a utility
room or boiler room.
■The surface must be firm, preferably a concrete floor or
foundation.
■Install ACVM 270 with its back to an outside wall, ideally
in a room where noise does not matter. If this is not
possible, avoid placing it against a wall behind a bed-
room or other room where noise may be a problem.
■The unit can be aligned using the adjustable feet.
■Route pipes so they are not fixed to an internal wall that
backs on to a bedroom or living room.
■Ensure that there is approx. 500 mm free space in front
of and 220 mm above the product for any future service.
Dimensioning expansion vessel
Internal volume in ACVM 270 for calculating expansion
vessel is 280 l. The expansion vessel's volume must be at
least 5 % of the total volume.
Example table
Volume Expansion vessel (l)Total volume (l)
14280
16320
18360
Initial pressure and max height difference
The pre-pressure of the pressure expansion vessel must
be dimensioned according to the maximum height (H)
between the vessel and the highest positioned radiator,
see figure. A pre-pressure of 0.5 bar (5 mvp) means a
maximum permitted height difference of 5 m.
If the standard initial pressure in the pressure vessel is not
high enough it can be increased by filling via the valve in
the expansion vessel. The expansion vessel's standard initial
pressure must be entered in the check list on page 38.
Any change in the initial pressure affects the ability of the
expansion vessel to handle the expansion of the water.
H
Manual shunting
When ACVM 270 is set to emergency mode, the heating
control system is not in operation, and manual shunt op-
eration is required.
1. Press and lock the button on (QN11).
2. Turn the mixing valve to the desired position by hand.
LEK
LEK
Button
Knob
QN11
Emptying the vessel
The vessel in ACVM 270 is emptied by opening the valve
(QM1) and safety valve (FL2).
NOTE
When the vessel in ACVM 270 is emptied via the valve
(QM1), some water will remain in the coil and in the
heat exchanger.
This means that there is a risk of the heat exchanger,
pipes and valves freezing at low temperatures as well
as a hygienic risk for the coil in the hot water section.
GM20
XL4 XL3 XL2 XL1 XL15 XL13 XL14 PF4 PF1
UB1
UB2
EP2
X1
GP1
SF1
FA2
FA1
BT30
FD1
XL8
BT24
XL9
EB1
HQ1
QM30
QM31
QN11
AA22
AA22-R26
AA22-R25
AA22-R24
AA21
AA23
BT6
BT19
QM1
PF3
LEK
QM1
Recommended installation order
1. Connect ACVM 270 to the climate system, cold and
hot water lines as well as any external heat sources.
See page 21. Also see docking descriptions on page
26 and further on.
2. Install the refrigerant pipes according to the descrip-
tion on page 23.
3. Connect the load monitor, outdoor temperature
sensor, any centralised load control and external con-
tacts as well as the cable between ACVM 270 and
AMS 10. See page 32.
4. Connect supply to ACVM 270. See page 31.
5. Follow the commissioning instructions on page 36.
NIBE™ SPLIT ACVM 27020
For the Installer
General information for the installer