Nibe AXC 40 User guide

Installer Manual
Accessory card
IHB 2113-10
031444
AXC 40
LEK

S-series
S1255
4
S-series
F-series
34
F-series

S-series
4Important information
5General
6Common electrical connection
8Shunt controlled additional heat
13Step controlled additional heat
17Hot water comfort
22Ground water system
26Shunt controlled brine
30Pulse energy meter
32Technical data
63Contact information
3AXC 40
S
S-SERIES
Table of Contents

Important information
SAFETY INFORMATION
This manual describes installation and service proced-
ures for implementation by specialists.
The manual must be left with the customer.
This appliance can be used by children
aged from 8 years and above and persons
with reduced physical, sensory or mental
capabilities or lack of experience and
knowledge if they have been given super-
vision or instruction concerning use of the
appliance in a safe way and understand
the hazards involved. Children shall not
play with the appliance. Cleaning and user
maintenance shall not be made by children
without supervision.
This is an original manual. It may not be
translated without the approval of NIBE.
Rights to make any design or technical
modifications are reserved.
©NIBE 2021.
SYMBOLS
NOTE
This symbol indicates danger to person or ma-
chine .
Caution
This symbol indicates important information
about what you should consider when installing
or servicing the installation.
TIP
This symbol indicates tips on how to facilitate
using the product.
MARKING
The CE mark is obligatory for most products
sold in the EU, regardless of where they are
made.
CE
Classification of enclosure of electro-technical
equipment.
IP21
Danger to person or machine.
!
Read the User Manual.
Read the Installer Manual.
AXC 40 S-series | GB4
S
S-series

General
This accessory is used to enable connection and control
of the following accessory functions. One AXC 40 is
required for each function.
• shunt-controlled additional heat
• step-controlled additional heat
• control of circulation pump for hot water circulation
• controlling ground water pump
• shunt-controlled brine
COMPATIBLE PRODUCTS
• S1155
• S1255
• VVM S320
• VVM S325
CONTENTS
Cable ties4 x
Heating pipe paste2 x
Insulation tape1 x
AXC module1 x
Aluminium tape2 x
Temperature sensor2 x
COMPONENT LOCATION, AXC MODULE
(AA25)
AA5-X4 AA5-S2
AA5-X2
AA5
AA25-X1
AA5-X9
AA25-FC1
ELECTRICAL COMPONENTS
Accessory cardAA5
DIP switchAA5-S2
Terminal block, inputsAA5-X2
Terminal block, communicationAA5-X4
Terminal block, outputsAA5-X9
AXC moduleAA25
Miniature circuit-breakerAA25-FC1
Terminal block, power supplyAA25-X1
Designations according to standard EN 81346-2.
5AXC 40 S-series | GB
S

Common electrical
connection
NOTE
All electrical connections must be carried out
by an authorised electrician.
Electrical installation and wiring must be carried
out in accordance with the stipulations in force.
The main product must be disconnected from
the power supply when installing AXC 40.
• To prevent interference, sensor cables to external
connections must not be laid close to high voltage
cables.
• The minimum area of communication and sensor
cables to external connections must be 0.5 mm² up
to 50 m, for example EKKX, LiYY or equivalent.
• AXC 40 must be installed via an isolator switch. The
cable area has to be dimensioned based on the fuse
rating used.
• Mark the relevant electrical cabinet with a warning
about external voltage, in those cases where a com-
ponent in the cabinet has a separate supply.
• AXC 40 restarts after a power failure.
Electrical circuit diagrams are at the end of the chapter
for each connection option.
CABLE LOCK
Use a suitable tool to release/lock cables in terminal
blocks.
LEK
1
1
2
2
3
3
1
2
3
3
4
1
2
LEK
1
1
2
2
3
3
1
2
3
3
4
1
2
1
2
MOUNTING
The AXC module (AA25) is a separate, electric control
module and must be mounted on a wall.
Caution
The screw type must be adapted to the surface
on which installation is taking place.
UN
Use all mounting points and mount the module upright,
flat against the wall.
Leave at least 100 mm of free space around the module
to allow access and make cable routing easier during
installation and servicing.
NOTE
The installation must be carried out in such a
way that IP21 is satisfied.
OVERVIEW ACCESSORY BOARD (AA5)
ON
12345678
-X9
-X2
24 20212223 1516171819 1011121314 56789 1
1
N
L
PE
PE
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
9
234
-X8
-X4
-X10
-X1
AA5-X2 AA5-X9AA5-S2
AA5-X4
CONNECTING COMMUNICATION
AXC 40 contains an accessory board (AA5) that connects
directly to the main product’s PCB (terminal block AA2-
X30).
If more accessories are to be connected, or are already
installed, the boards are connected in series.
AXC 40 S-series | GB6
S

Because there can be different connections for accessor-
ies with accessory board (AA5), you should always read
the instructions in the manual for the accessory that is
to be installed.
B A GND +12V
AA2-X30
1 2 3 4
AA5-X4
1
2
3
4
5
6
7
8
A
B
GND
A
B
GND
AA5-X4
1
2
3
4
5
6
7
8
A
B
GND
A
B
GND
Main product
Accessory 1
Accessory 2
The terminal block (AA2-X30) is upright on S1155.
POWER CONNECTION
Connect the power supply cable to terminal block AA25-
X1 as illustrated.
Tightening torque for earth cable: 0.5–0.6 Nm.
AA25-X1
N
L
ExterntProduktNamn
2
1
AA25 External
7AXC 40 S-series | GB
S

Shunt controlled
additional heat
GENERAL
This function enables an external additional heater, e.g.
an electric boiler, wood boiler, pellet boiler, oil boiler,
gas boiler or district heating, to assist with the heating.
The heat pump/indoor module controls a shunt valve
(EM1-QN11) and a circulation pump (EM1-GP10) via
AXC 40. If the heat pump/indoor module cannot manage
to maintain the correct supply temperature (EB100-
BT25), the additional heat starts. When the temperature
on the boiler sensor (EM1-BT52) exceeds the set value,
the heat pump transmits a signal to the shunt (EM1-
QN11) to open from the additional heat. The shunt (EM1-
QN11) is regulated so that the true supply temperature
agrees with the heat pump’s theoretically calculated set
point value. When the heating demand drops sufficiently
so that additional heat is no longer required, the shunt
(EM1-QN11) closes completely.
Factory-set minimum operating time for the boiler is 12
hours.
The function smart energy source can be selected if you
want to prioritise automatically between heat pump
operation and additional heat versus the best price or
environmental impact.
COMPATIBLE PRODUCTS
• S1155
• S1255
• VVM S320
• VVM S325
PIPE CONNECTIONS
The external circulation pump (EM1-GP10) is placed on
the supply line to the climate system after the temper-
ature sensor (AA35-BT25).
SHUNT VALVE
The shunt valve (EM1-QN11) must be placed on the
supply line to the climate system after the heat pump
according to the outline diagram.
AB
B
A
• Connect the supply line from the
heat pump to the external heat
source via the T-pipe to port B on
the shunt valve (closes on reduce
signal).
• Connect the supply line to the climate system from
the shunt valve to the common port AB (always open)
• Connect the supply line from the external additional
heat to the shunt valve to port A (opens on increase
signal).
TEMPERATURE SENSOR
• Install the boiler sensor (EM1-BT52) in a suitable loca-
tion in the external additional heat.
• External supply temperature sensor (EB100-BT25,
connected in the heat pump/indoor module) must be
installed on the supply line to the climate system, after
the shunt valve (EM1-QN11).
LEK
LEK
E
Install the temperature sensors using cable ties, together
with the heat conducting paste and aluminium tape.
Then insulate with the enclosed insulation tape.
NOTE
To prevent interference, sensor cables to ex-
ternal connections must not be laid close to
high voltage cables.
AXC 40 S-series | GB8
S

SYSTEM DIAGRAM
Caution
This is an outline diagram. Actual installations
must be planned according to applicable
standards.
EXPLANATION
Mixing valve controlled additional heat,
boiler
EM1
AXC moduleAA25
Boiler sensorBT52
External heating medium pumpGP10
Mixing valve, additionQN11
Heat pumpEB100
External supply temperature sensorBT25
External return line sensorBT71
Miscellaneous
Non-return valveRM1
OUTLINE DIAGRAM WITH
SHUNT-CONTROLLED ADDITIONAL HEAT
-EM1-GP10
-EB100-BT25
-RM1
-EB100
-EB100-BT71
-EM1-AA25
-EM1-BT52
-EM1-QN11
-EM1
-EM1
ELECTRICAL CONNECTION
NOTE
Read section "Common electrical connection"
for instructions regarding electrical connection.
CONNECTION OF SENSORS AND EXTERNAL
BLOCKING
Boiler sensor (EM1-BT52)
Connect the sensor to AA5-X2:23-24.
Caution
Sensor cable splicing must fulfil IP54.
24 23 22 21 20 19 18 17 16 15 14 13
AA25
External
BT52
AA5-X2
External blocking (optional)
A contact (NO) can be connected to AA5-X2:21-22 to
block the accessory. When the contact closes, the ac-
cessory is blocked.
24 23 22 21 20 19 18 17 16 15 14 13
AA25
External
External blocking
AA5-X2
External supply temperature sensor (EB100-BT25)
Sensor (BT25) must be connected in the main product.
See the Installer Manual for the main product.
External return line sensor (EB100-BT71)
Sensor (BT71) must be connected in the main product.
See the Installer Manual for the main product.
9AXC 40 S-series | GB
S

Caution
The relay outputs on the accessory board can
have a max load of 2A (230V) in total.
CONNECTION OF THE CIRCULATION PUMP
(EM1-GP10)
Connect the external heating medium pump (GP10) to
AA5-X9:7 (N), AA5-X9:8 (230 V) and X1:PE.
1
2
3
4
5
6
7
8
9
AA5-X9
2
1
1
M
AA25-X1
ExternalAA25
GP10
CONNECTION OF THE SHUNT VALVE
MOTOR (EM1-QN11)
Connect the shunt motor (QN11) to AA5-X9:6 (230V,
open), AA5-X9:5 (N) and AA5-X9:4 (230V, close).
1
2
3
4
5
6
7
8
9
AA25 External
AA5-X9
QN11
Open SH +
N
SH -
Close
Connection of 0-10 V control of shunt motor
(EM1-QN11)
Connect a 2-core cable to AA5-X2:5 (0-10 V) and AA5-
X2:6 (GND).
AA5-X2
0-10V
GND
7654
AA25
External
At 0 V the shunt is closed and at 10 V the shunt is open.
CONNECTION OF THE AUXILIARY RELAY
FOR ADDITIONAL HEATING
Connect the auxiliary relay for switching the additional
heat on and off to AA5-X9:2 (230V) and AA5-X9:3 (N).
L
N
A1 A2
External auxiliary relay
Additional
Heating
1
2
3
4
Additional
heat
External auxiliary relay
AA5-X9
AA25 External
DIP SWITCH
The DIP switch (S2) on the accessory board (AA5) must
be set as follows.
32
1
ON
476
58
AXC 40 S-series | GB10
S

PROGRAM SETTINGS
Program setting of AXC 40 can be performed via the
start guide or directly in the menu system.
Start guide
The start guide appears at first start-up after the heat
pump installation, but can also be found in menu 7.7.
MENU SYSTEM
If you do not make all settings via the start guide or need
to change any of the settings, this can be done in the
menu system.
Menu 7.2.1 - Add/remove accessories
Here, you state which accessories are installed for the
compatible product.
To identify connected accessories automatically, select
"Search for accessories". It is also possible to select ac-
cessories manually from the list.
Menu 7.2.3 - Shunt-contr. add. heat(AXC)
Prioritised add. heat
Setting range: on/off
start additional heat
Setting range: -2000 – -30 DM
Minimum operating time
Setting range: 0 – 48 h
Lowest temperature
Setting range: 5 – 90 °C
Shunt amplification
Setting range: 0.1 –10.0
Shunt waiting time
Setting range: 10 – 300 s
Set when the addition is to start, the minimum run time
and the minimum temperature for external addition with
shunt here. External addition with shunt is for example
a wood/oil/gas/pellet boiler.
You can set shunt valve amplification and shunt valve
waiting time.
Selecting "Prioritised add. heat" uses the heat from the
external additional heat instead of the heat pump. The
shunt valve is regulated as long as heat is available,
otherwise the shunt valve is closed.
See the accessory installation instructions for function
description.
Menu 7.5.3 - Forced control
Here you can force control the various components in
the installation. The most important safety functions
remain active however.
NOTE
Forced control is only intended to be used for
troubleshooting purposes. Using the function
in any other way may cause damage to the
components in your climate system.
Menu 4.6 - Smart Energy Source
Smart Energy Source
Alternative: on/off
Control method
Alternatives: Price per kWh / CO2
If Smart Energy Source™ is activated AXC 40 prioritises
how / to what extent each docked energy source will
be used. Here you can select whether the system will
use the energy source that is cheapest at the time or
the one that is most carbon dioxide neutral at the time.
Caution
Your choices in this menu affect menu 4.7 -
Energy price.
Caution
Also see the Installer Manual for the main
product.
11AXC 40 S-series | GB
S

ELECTRICAL CIRCUIT DIAGRAM
WIRING DIAGRAM SHUNT CONTROL ELSCHEMA SHUNTSTYRD 051055 8
AXC 40 S-series | GB12
S

Step controlled
additional heat
GENERAL
This function enables an external additional heater, e.g.
an electric boiler, to aid with heating.
With AXC 40, three potential-free relays can be used for
additional heat control, which then gives max. 3 linear
or 7 binary steps.
The flow through the additional heat is ensured by the
external circulation pump (EB1-GP10).
COMPATIBLE PRODUCTS
• S1155
• S1255
• VVM S320
• VVM S325
PIPE CONNECTIONS
The external circulation pump (EM1-GP10) is placed on
the supply line to the climate system after the temper-
ature sensor (AA35-BT25).
If the climate system’s flow exceeds the maximum re-
commended flow for the electric boiler, a bypass must
be installed so that only a partial flow passes through
the electric boiler.
TEMPERATURE SENSOR
• External supply temperature sensor (EB100-BT25,
connected in the heat pump/indoor module) must be
installed on the supply line to the climate system, after
the additional heat.
LEK
LEK
E
Install the temperature sensors using cable ties, together
with the heat conducting paste and aluminium tape.
Then insulate with the enclosed insulation tape.
NOTE
To prevent interference, sensor cables to ex-
ternal connections must not be laid close to
high voltage cables.
SYSTEM DIAGRAM
Caution
This is an outline diagram. Actual installations
must be planned according to applicable
standards.
EXPLANATION
Step controlled additional heatEB1
AXC moduleAA25
External heating medium pumpGP10
Heat pumpEB100
External supply temperature sensorBT25
External return line sensorBT71
Miscellaneous
Shut-off valveQM42-43
Trim valveRN1
Non-return valveRM1
OUTLINE DIAGRAM WITH
STEP-CONTROLLED ADDITIONAL HEAT
-EB1-GP10
-EB100-BT25
-EB100
-RN1
-QM42
-QM43 -RM1
-EB100-BT71
-EB1-AA25
-EB1
-EB1
13AXC 40 S-series | GB
S

ELECTRICAL CONNECTION
NOTE
Read section "Common electrical connection"
for instructions regarding electrical connection.
CONNECTION OF SENSORS AND EXTERNAL
BLOCKING
External blocking (optional)
A contact (NO) can be connected to AA5-X2:23-24 to
block the accessory. When the contact closes, the ac-
cessory is blocked.
Caution
The relay outputs on the accessory board can
have a max load of 2 A (230 V) in total.
24 23 22 21 20 19 18 17 16 15 14 13
AA25
External
External blocking
AA5-X2
External supply temperature sensor (EB100-BT25)
Sensor (BT25) must be connected in the main product.
See the Installer Manual for the main product.
External return line sensor (EB100-BT71)
Sensor (BT71) must be connected in the main product.
See the Installer Manual for the main product.
Caution
The relay outputs on the accessory board can
have a max load of 2A (230V) in total.
CONNECTING HEATING MEDIUM PUMP
(EB1-GP10)
Connect the external heating medium pump (GP10) to
AA5-X9:7 (N), AA5-X9:8 (230 V) and X1:PE.
1
2
3
4
5
6
7
8
9
AA5-X9
2
1
1
M
AA25-X1
ExternalAA25
GP10
CONNECTION OF RELAYS
Connecting additional step
Connect step 1 to AA5-X9:1 and 2.
Connect step 2 to AA5-X9:3 and 4.
Connect step 3 to AA5-X9:5 and 6.
AA5-X9
ExterntProduktnamn
Steg 1
Steg 2
Steg 3
A2A1
A2
A1
A2A1
1
2
3
4
5
6
7
AA5-X9
AXC40 External
Step 1
Step 3
Step 2
Connection of 0-10 V control of additional heat step
Connect a 2-core cable to AA5-X2:5 (0-10 V) and AA5-
X2:6 (GND).
AA5-X2
0-10V
GND
7654
AA25
External
0 V = 0 steps and 10 V = max. number of set steps.
AXC 40 S-series | GB14
S

DIP SWITCH
The DIP switch (S2) on the accessory board (AA5) must
be set as follows.
32
1
ON
476
58
PROGRAM SETTINGS
Program setting of AXC 40 can be performed via the
start guide or directly in the menu system.
START GUIDE
The start guide appears upon first start-up after the heat
pump installation, but is also found in menu 7.7.
MENU SYSTEM
If you do not make all settings via the start guide or need
to change any of the settings, this can be done in the
menu system.
Menu 7.2.1 - Add/remove accessories
Here, you state which accessories are installed for the
compatible product.
To identify connected accessories automatically, select
"Search for accessories". It is also possible to select ac-
cessories manually from the list.
Menu 7.2.6 - Step-control add. heat(AXC)
Relative DM start additional heat
Setting range: -2000 – -30 DM
Diff. between add heat steps
Setting range: 0 – 1,000 DM
Max step
Setting range
(binary stepping deactivated): 0 – 3
Setting range
(binary stepping activated): 0 – 7
Binary stepping
Setting range: on/off
Make settings for step controlled addition here. Step
controlled addition is for example an external electric
boiler.
It is possible, for example, to select when the additional
heat is to start, to set the maximum number of permit-
ted steps and whether binary stepping is to be used.
When binary stepping is deactivated (off), the settings
refer to linear stepping.
See the accessory installation instructions for function
description.
Menu 7.5.3 - Forced control
Here you can force control the various components in
the installation. The most important safety functions
remain active however.
NOTE
Forced control is only intended to be used for
troubleshooting purposes. Using the function
in any other way may cause damage to the
components in your climate system.
Caution
Also see the Installer Manual for the main
product.
15AXC 40 S-series | GB
S

ELECTRICAL CIRCUIT DIAGRAM
WIR. DIAGRAM STEP CONTROLLED ELSCHEMA STEGSTYRD TILLSATS 051056 8
AXC 40 S-series | GB16
S

Hot water comfort
GENERAL
This function provides the opportunity to control addi-
tional heat in the tank, mixing valve and hot water circu-
lation.
ADDITIONAL HEAT IN TANK
If an immersion heater is installed in the tank, it can be
permitted to produce hot water at the same time as the
heat pump prioritises heating or cooling.
MIXING VALVE
A temperature sensor reads the temperature of the
outgoing hot water to the domestic hot water and ad-
justs the mixing valve from the water heater until the
set temperature has been reached.
HOT WATER CIRCULATION (HWC)
One pump can be controlled for the circulation of the
hot water during selectable periods.
COMPATIBLE PRODUCTS
• S1155
• S1255
• VVM S320
• VVM S325
PIPE CONNECTIONS
MIXING VALVE
The mixer valve (QZ1-FQ3) must be placed on the out-
going hot water line from the water heater according to
the outline diagram.
AB
A
B
•Connect the incoming cold water via
the T-pipe to port B on the mixer
valve (closes at signal).
• Connect the mixed water to the do-
mestic hot water taps from the mix-
er valve to the common port AB (always open).
•Connect the outgoing hot water from the water heater
to the mixer valve to port A (opens on signal)
TEMPERATURE SENSOR
• Temperature sensor, outgoing hot water, (QZ1-BT70)
is installed as close to the mixing valve (QZ1-FQ3) as
possible.
LEK
LEK
E
Install the temperature sensors using cable ties, together
with the heat conducting paste and aluminium tape.
Then insulate with the enclosed insulation tape.
NOTE
To prevent interference, sensor cables to ex-
ternal connections must not be laid close to
high voltage cables.
17AXC 40 S-series | GB
S

SYSTEM DIAGRAM
EXPLANATION
Caution
This is an outline diagram. Actual installations
must be planned according to applicable
standards.
Hot water comfortQZ1
AXC moduleAA25
Hot water circulation pumpGP11
Mixer valve, hot waterFQ3
Trim valveRN1
Non-return valveRM1
Flow line sensorBT70
Return line sensor, hot waterBT82
Temperature sensor, hot water heaterBT83
Water heaterCP1
Additional water heaterCP2
Heat pumpEB100
Temperature sensor, hot waterBT6
Temperature sensor, hot water topBT7
OUTLINE DIAGRAM WITH ADDITIONAL
WATER HEATER, HWC AND ELECTRONIC
MIXING VALVE
-CP2
-CP1
-EB100
-QZ1-BT83
-EB100-BT7
-EB100-BT6
-QZ1-AA25
-QZ1-BT70-QZ1-FQ3
-QZ1-GP11-QZ1-RM1
-QZ1
-QZ1-RN1
-BT82
ELECTRICAL CONNECTION
NOTE
Read section "Common electrical connection"
for instructions regarding electrical connection.
CONNECTION OF SENSORS AND EXTERNAL
BLOCKING
Hot water sensor, supply line (QZ1-BT70)
Connect the hot water sensor to AA5-X2:23-24.
24 23 22 21 20 19 18 17 16 15 14 13
AA25
External
BT70
AA5-X2
Temperature sensor, hot water comfort, return line
(QZ1-BT82)
Connect the temperature sensor to AA5-X2:17-18.
24 23 22 21 20 19 18 17 16 15 14 13
AA25
External
BT82
AA5-X2
Temperature sensor, hot water heater (QZ1-BT83)
Connect the temperature sensor to AA5-X2:19-20.
24 23 22 21 20 19 18 17 16 15 14 13
AA25
External
BT83
AA5-X2
External blocking
A contact (NO) can be connected to AA5-X2:21-22 to
block the accessory. When the contact closes, the ac-
cessory is blocked.
AXC 40 S-series | GB18
S

24 23 22 21 20 19 18 17 16 15 14 13
AA25
External
External blocking
AA5-X2
External blocking, hot water circulation pump
(QZ1-GP11)
A contact (NO) can be connected to AA5-X2:15-16 to
block the hot water circulation pump. When the contact
closes, the hot water circulation pump is blocked.
24 23 22 21 20 19 18 17 16 15 14 13
AA25
External
AA5-X2
External blocking
Caution
The relay outputs on the accessory board can
have a max load of 2A (230V) in total.
CONNECTION OF THE HOT WATER
CIRCULATION PUMP (QZ1-GP11)
Connect the circulation pump (GP11) to AA5-X9:8 (230V),
AA5-X9:7 (N) and X1:.
1
2
3
4
5
6
7
8
9
AA5-X9
2
1
1
M
AA25-X1
ExternalAA25
GP11
CONNECTION OF THE MIXER VALVE
(QZ1-FQ3)
Connect the mixing valve motor (FQ3) to AA5-X9:6
(230V, open), AA5-X9:5 (N) and AA5-X9:4 (230V, close).
1
2
3
4
5
6
7
8
9
AA25 External
AA5-X9
FQ3
Close
N
Open
CONNECTION OF AUXILIARY RELAY FOR
ADDITIONAL HEAT IN TANK
Connect the auxiliary relay for switching the additional
heat on and off to AA5-X9:1 (N) and AA5-X9:2 (230V).
L
N
A2 A1
External auxiliary relay
Additional
Hot water
1
2
3
4
AA5-X9
Extra Hot Water
External auxiliary relay
AA25 External
DIP SWITCH
The DIP switch (S2) on the accessory board (AA5) must
be set as follows.
32
1
ON
476
58
19AXC 40 S-series | GB
S

PROGRAM SETTINGS
Program setting of AXC 40 can be performed via the
start guide or directly in the menu system.
START GUIDE
The start guide appears at first start-up after the heat
pump installation, but can also be found in menu 7.7.
MENU SYSTEM
If you do not make all settings via the start guide or need
to change any of the settings, this can be done in the
menu system.
Menu 7.2.1 - Add/remove accessories
Here, you state which accessories are installed for the
compatible product.
To identify connected accessories automatically, select
"Search for accessories". It is also possible to select ac-
cessories manually from the list.
Menu 2.5 - Hot water circulation
Operating time
Setting range: 1 – 60 min
Downtime
Setting range: 0 – 60 min
Period
Active days
Setting range: Monday – Sunday
Start time
Setting range: 00:00 – 23:59
Stop time
Setting range: 00:00 – 23:59
Set hot water circulation for up to five periods per day
here. During the set periods, the hot water circulation
pump will run according to the settings above.
"Operating time" decide how long the hot water circula-
tion pump must run per operating instance.
"Downtime" decide how long the hot water circulation
pump must be stationary between operating instances.
"Period" Here, you set the period of time during which
the hot water circulation pump will run, by selecting
Active days,Start time and Stop time.
NOTE
Hot water circulation is activated in menu 7.4
"Selectable in/outputs" or 7.2.8 "Hot water
comfort".
Menu 7.2.8 - Hot water comfort (AXC)
Activating immersion heater.
Setting range: on/off
Activ. imm heater in heating oper
Setting range: on/off
Activating mixing valve
Setting range: on/off
Outgoing hot water
Setting range: 40 - 65 °C
Shunt amplification
Setting range: 0.1 – 10.0
Shunt waiting time
Setting range: 10 – 300 s
Make settings for the hot water comfort here.
Activating immersion heater.: The immersion heater is
activated here, if installed in the water heater.
Activ. imm heater in heating oper: Activate here
whether the immersion heater in the tank (requires the
above alternative to be activated) is to be permitted to
charge hot water, if the compressors in the heat pump
are prioritising heating.
Activating mixing valve: Activated if mixer valve is in-
stalled and it is to be controlled from AXC 40. When the
option is active, you can set the outgoing hot water
temperature, shunt amplification and shunt waiting time
for the mixer valve.
Outgoing hot water: Here, you can set the temperature
at which the mixer valve is to restrict hot water from
the water heater.
Menu 7.5.3 - Forced control
Here you can force control the various components in
the installation. The most important safety functions
remain active however.
NOTE
Forced control is only intended to be used for
troubleshooting purposes. Using the function
in any other way may cause damage to the
components in your climate system.
Caution
Also see the Installer Manual for the main
product.
AXC 40 S-series | GB20
S