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Page 21Combi/Extender
EN- Installation instructions
About the instructions
1. Introduction
This instruction describes the installation of Extender.
References to chapters and sections within the instructions are marked in italics, e.g.: 1 About the instructions.
References to menu options in the heat pump’s control system are in upper case, e.g.: INFORMATION ->
OPERAT. -> AUTO.
All figures and tables in the instructions are numbered to help installers and service technicians refer to them
easily.
2. Symbols
The instructions contain different warning symbols, which, together with text, indicate to the user that there
are risks involved with actions to be taken.
The symbols are displayed to the left of the text and four different symbols are used:
Hazardous electrical voltage! Indicates an immediate danger that leads to fatal or serious injury if neces-
sary measures are not taken.
Danger! Risk of personal injury! Indicates a possible danger that can lead to fatal or serious injury if neces-
sary measures are not taken.
Risk of installation damage. Indicates a possible hazard that can lead to item damage if necessary measures
are not taken.
Information regarding making the handling of the installation easier or a possible operational technical disad-
vantage.
3. Terminology
The instructions contain terms throughout that designate components and functions. The table lists the most
common terms that are used in the instructions.
Term Meaning
Heating system The circuit that generates heat to the property or to the water heater.
Supply line The heating system’s supply line with flow direction to radiators/under floor heating or
water heater.
Return line The heating system’s return line with flow direction from radiators/under floor heating or
water heater.
Page 22 Extender
Safety precautions
4. General safety precautions
Extender must be installed by authorised installation engineers and the installation must follow the applicable
local rules and regulations as well as these installation instructions.
This apparatus is not intended for persons (including children) with reduced physical, sensory or psychological
capacity, or who do not have knowledge or experience, unless supervised or they have received instructions
on how the apparatus functions from a safety qualified person.
Danger! Risk of personal injury! Children are not permitted to play with the apparatus.
Extender must be located on a stable base. The base must be able to support the gross weight.
To prevent leaks ensure that there are no stresses in the connecting pipes!
It is important that the heating system is bled after installation.
Bleed valves must be installed where necessary.
Radiator systems with closed expansion tanks must also be supplied with approved pressure gauges and safe-
ty valves.
Cold and hot water pipes and overflow pipes from safety valves must be made of heat resistant and corrosion-
resistant material, e.g. copper. The safety valve overflow pipes must have an open connection to the drain and
visibly flow into this in a frost-free environment.
The connecting pipe between the expansion tank and the safety valve must slope continuously upwards. A
continuous upwards slope means that the pipe must not slope downwards from the horizontal at any point.
5. Scrapping
Scrapping must be carried out in accordance with applicable local rules and regulations.
Page 23Extender
Description
6. Product description
Extender is an accessory for customers who want to combine the heat pump with another heat source such
as solar panels. Preheating the tap water before the water reaches the heat pump gives better output and
reduced annual consumption.
Advantages:
y larger hot water volume
y Combine the heat pump with an alternative heat source
y Simplify management of several heat sources
y Increases the heat pump efficiency.
y Integrate Extender management into the control system
The following external heat sources can be used:
y Solar heat
y Gas
y Pellets
y Water heater
y Wood heating
6.1 Technical data
Table 1: Technical data
Volume 386 L
Width 600 mm
Depth 571 mm (+117 mm)
Height 1794 ±10 mm
Weight 170 kg
117
571
600
Figure 1. Dimensions
Page 24 Extender
Pipe connections
7. Instructions
7.1 Pre heating of cold water
12
9
10
1
4
11
8
13
7
5 36 2
Figure 2. Pre heating of cold water
Image description
1. Return to the heat pump
2. Heating system supply line
3. Return from heating system
4. Supply line from heat pump
5. Heating system supply line
6. Return from heating system
7. Cold water in (lower coil)
8. Cold water out (lower coil)
9. Cold water in (upper coil)
10. Cold water to heat pump (from upper coil)
11. Extender
12. Heat pump
13. Hot water
Page 25Extender
7.2 Preheating of cold water with external heat source
12
7
10
1
4
11
8
14
13
9
5
3
6
2
Figure 3. Preheating of cold water with external heat source (such as solar panel)
Image description
1. Return to the heat pump
2. Heating system supply line
3. Return from heating system
4. Supply line from heat pump
5. Heating system supply line
6. Return from heating system
7. Supply line to alternative heat source
8. Return from alternative heat source
9. Cold water in (upper coil)
10. Cold water to heat pump (from upper coil)
11. Extender
12. Heat pump
13. Hot water
14. External heat source (for example solar panel)
Page 26 Extender
7.3 Hole for pipe connection
9
1
2 3 4 5
6
7
8
3
6
8
1
7
4 5 9 2
Figure 4. Hole for pipe connection
Image descriptions with pipe dimensions
1. Ø 22 mm cold water to heat pump (from upper coil)
2. DN25 Return from heating system
3. DN25 Supply line from heat pump
4. DN25 Supply line heating system (long)
5. DN25 Return from heating system (long)
6. Ø 22 mm cold water in (lower coil)
7. Ø 22 mm cold water in (upper coil)
8. Ø 22 mm cold water out (lower coil)
9. DN50 Heating system supply line
Page 27Extender
7.4 Connection sensor
Connecting sensors (see Extender Connecting sensors ). Update the control computer to integrate Extender in
the menu system (see Extender Connecting sensors).
6
5
1
7
8
9
2 3 4
10
Figure 5. Sensor connection
Image description
1. Hot water sensor Extender
2. Control cable shunt valve
3. System supply line sensor
4. Control cable circulation pump
5. Extender
6. Heat pump
7. Relay kit
8. Electrical panel with terminal blocks
9. Expansion card accessory (see Heat pump installation instructions)
10. IO-card
Page 28 Extender
7.5 Hot water sensor
1
Figure 6. Hole for cable for Extender sensor connection
Image description
1. Hole for Extender sensor
Page 29Extender
7.6 Accessories
Table 2: Accessories
Part no. Quantity Name
086U8920 1 Shunt kit for 2nd heating circuit
086U8890 1 Relay kit for 2nd heating circuit
Page 30 Extender
Connection sensor
8. Connection alternative
8.1 Connection alternative base
6
5
1
7
8
10
9
2
3
h
h
2
VK1
Figure 7. Connection alternative base
Table 3: Diplomat, Duo, Atria / DHP-H, L, A, C
Cable From To
Tank sensor Extender q Extender t IO-card T2 a
System supply line sensor w
Supply line for heating system
IO-card T3 a
Control cable circulation pump 1 e
Circulation pump 1
IO-card 337-338 a and relay kit u (option)
Table 4: Atella / DHP-AX
Cable From To
Tank sensor Extender q Extender t IO-card 335-336 a
System supply line sensor w
Supply line for heating system
IO-card T3 a
Control cable circulation pump 1 e
Circulation pump 1
IO-card 337-338 a and relay kit u (option)
Page 31Extender
8.2 Connection alternative system shunt
6
5
1
2
3
7
8
10
4
9
h
h
2
VK1
Figure 8. Connection system shunt
Table 5: Diplomat, Duo, Atria / DHP-H, L, A, C
Cable From To
Tank sensor Extender q Extender t IO-card T2 a
System supply line sensor e
Supply line for heating system
IO-card T3 a
Control cable circulation pump 1 r
Circulation pump 1
IO-card 337-338 a and relay kit u (option)
Control cable system shunt 230V w
Shunt motor 230V
IO-card 215-216 a
Table 6: Atella / DHP-AX
Cable From To
Tank sensor Extender q Extender t IO-card 335-336 a
System supply line sensor e
Supply line for heating system
IO-card T2 a
Control cable circulation pump 1 r
Circulation pump 1
IO-card 337-338 a and relay kit u (option)
Control cable system shunt 230V w
Shunt motor 230V
IO-card 215-216 a
Page 32 Extender
8.3 Connection alternative heat source with one shunt
6
5
1
7
8
10
9
2 34
11
12
h
h
2
VK1
VK2
Figure 9. Connection alternative heat source with one shunt
Table 7: Diplomat, Duo, Atria / DHP-H, L, A, C
Cable From To
Tank sensor Extender q Extender t IO-card T2 a
System supply line sensor s
Supply line for heating system
IO-card T3 a
Control cable circulation pump 1 d
Circulation pump 1
IO-card 337-338 a and relay kit u (option)
Control cable system shunt 24V r
Shunt motor 24V
Expansion card 361-364 o
Heating circuit 2 supply line sensor w
Supply line to heating system 2
Expansion card 365-366 o
Control cable circulation pump 2 e
Circulation pump 2
IO-card 337-338 a and relay kit u (option)
Table 8: Atella / DHP-AX
Cable From To
Tank sensor Extender q Extender t IO-card 335-336 a
System supply line sensor s
Supply line for heating system
IO-card T3 a
Control cable circulation pump 1 d
Circulation pump 1
IO-card 337-338 a and relay kit u (option)
Control cable system shunt 230V r
Shunt motor 230V
IO-card 215-216 a
Heating circuit 2 supply line sensor w
Supply line to heating system 2
IO-card T2 a
Control cable circulation pump 2 e
Circulation pump 2
IO-card 337-338 a and relay kit u (option)
Page 33Extender
8.4 Connection alternative heat source with two shunts
6
5
1
7
8
10
9
2 34
1113
12
h
h
2
VK2
VK1
Figure 10. Connection alternative heat source with two shunts
Table 9: Diplomat, Duo, Atria / DHP-H, L, A, C
Cable From To
Tank sensor Extender q Extender t IO-card T2 a
System supply line sensor w
Supply line for heating system
IO-card T3 a
Control cable circulation pump 1 e
Circulation pump 1
IO-card 337-338 a and relay kit u (option)
Control cable system shunt 230V r
Shunt motor 230V
IO-card 215-216 a
Heating circuit 2 supply line sensor s
Supply line to heating system 2
Expansion card 365-366 o
Control cable circulation pump 2 d
Circulation pump 2
IO-card 337-338 a and relay kit u (option)
Control cable heating circuit 2 shunt 24V f
Shunt motor 24V
Expansion card 361-364 o
Table 10: Atella / DHP-AX
Cable From To
Tank sensor Extender q Extender t IO-card 335-336 a
System supply line sensor w
Supply line for heating system
IO-card T3 a
Control cable circulation pump 1 e
Circulation pump 1
IO-card 337-338 a and relay kit u (option)
Control cable heating circuit 2 shunt 24V 1#
Shunt motor 24V
Expansion card 361-364 o
Heating circuit 2 supply line sensor s
Supply line to heating system 2
IO-card T2 a
Control cable circulation pump 2 d
Circulation pump 2
IO-card 337-338 a and relay kit u (option)
Control cable heating circuit 1 shunt 230V r
Shunt motor 230V
IO-card 215-216 a
Page 34 Extender
Menu management
9. Menus
When Extender is extended the control computer must be updated with the new heating system solution.
To activate Extender open the SERVICE -> INSTALLATION -> SYSTEM menu. The relevant heating system solu-
tion is given the menu BUFFER TANK.
The menu system shown in the following tables only displays menu alternatives that are selectable after acti-
vation of Extender.
The menu text may differ in some menu alternatives depending on the heating system solution. This is indi-
cated in the tables by / , for example SHUNT / VK2 SHUNT.
For the normal menu alternative refer to the installation instructions for the relevant heat pump.
Main menu Sub menu Selection/settings
INFORMATION
OPERATION
HEATCURVE
TANK TEMP
1
OVER CHARGE
1
HEAT CURVE 2 (Expansion card)
TEMPERATURE
SYSTEM SUPPLY LINE
BUFFER TANK
(SHUNT GROUP) / HEATING CIRCUIT 2
OPERAT.TIME
DEFROST (Defrost card)
1) Only displayed if a heating system solution is shunted.
Page 35Extender
9.1 Sub menu INFORMATION -> HEAT CURVE
Used to change settings for the heat curve.
Menu selection Meaning Factory setting
TANK TEMP Displayed if following conditions are filled.
SYSTEMSHUNT = On and heating circuit 2 not connected
or
SYSTEM SHUNT = On and heating circuit 2 connected and VK 2
SHUNT = On
Select AUTO
1
or a value between 30-55°C
OVER CHARGE Displayed if TANKTEMP = AUTO
Select a value between 0-5K. The temperature in the tank increases
with the corresponding value. Cannot exceed 55°C.
1) AUTO follows the set heat curve.
For ATELLA/DHP-AX the sub-menu INFORMATION -> VÄRMEKURVA is displayed:
Menu selection Meaning Factory setting
TANK TEMP Displayed if following conditions are filled.
only T2 is connected or SYSTEM SHUNT = On
and
VK2SHUNT = On
Select AUTO
1
or a value between 30-55°C
OVER CHARGE Displayed if TANKTEMP = AUTO
Select a value between 0-5K. The temperature in the tank increases
with the corresponding value. Cannot exceed 55°C.
1) AUTO follows the set heat curve.
9.2 Sub menu INFORMATION -> TEMPERATURE
Used to indicate the present temperatures, history and set/calculated values. History can be accessed to view
all the values by pressing the right arrow. A graph of the last 100 measurement points for the set time interval
(SERVICE -> INSTALLATION -> LOGTIME) is presented. In the event of an alarm, history stops being logged until
the alarm is reset by changing the operating mode to OFF.
Menu selection Meaning Factory setting
SYSTEM SUPPLY LINE Displayed if BUFFER TANK = On
Displays system supply temperature.
BUFFER TANK Displayed if BUFFER TANK = On
Indicates the temperature in the buffer tank.
SHUNT GROUP /
HEATING CIRCUIT 2
SHUNT GROUP is displayed if SHUNT GROUP = On
HEATING CIRCUIT 2 is displayed if heating circuit 2 is connected
and BUFFER TANK = On
Page 36 Extender
9.3 SERVICE menu
This menu is for use during installation and service to optimise and adjust the operation of the heat pump.
Open the menu by holding the left button in for five seconds.
The sub menus always available in the SERVICE menu are shown in the following table in bold: Menus in italics
are only visible if the expansion card is installed.
Menu Sub menu Selection/settings
SERVICE
HOT WATER
HEATPUMP
ADD. HEAT
MANUAL TEST
(SHUNT) / SYSTEM SHUNT
1
EXT. CIRC. PUMP
SHUNT GROUP / VK2SHUNT
2
REV. V. POOL
3
INSTALLATION
SYSTEM
BUFFER TANK
DEFROST
1) SHUNTGRUPP/SYSTEMSHUNT/VK2SHUNT is displayed for Atella/DHP-AX
2) VK2SHUNT is displayed for Atella/DHP-AX if SYSTEMSHUNT = On
3) Only displayed for Atella/DHP-AX
Page 37Extender
9.3.1 Sub menu SERVICE -> INSTALLATION
Used for settings that are set during installation.
Menu selection Meaning Factory setting
SYSTEM
Note! The menu selection
in the SYSTEM menu
varies depending on the
selected values. Tip: start
in the top menu and
work downwards.
Sub menu SERVICE -> INSTALLATION -> SYSTEM:
Menu selection Menu selection Meaning
HEATING SYSTEM
POOL POOL is normally displayed
Not displayed if BUFFER TANK = ON or SHUNT GROUP = On
SHUNT GROUP Not displayed if BUFFER TANK = On
BUFFER TANK
BUFFER TANK Select ON or OFF
SYSTEM SHUNT Displayed if BUFFER TANK = On
Select ON or OFF
VK 2 SHUNT Displayed if BUFFERTTANK = On and expansion card
and sensors for heating circuit 2 are connected
Select ON or OFF
ADDITION
For ATELLA/DHP-AX the sub-menu SERVICE -> INSTALLATION -> SYSTEM is displayed:
Menu selection Menu selection Meaning
HEATING SYSTEM D-SYSTEM / Normally displayed in a D-system
Not displayed if BUFFER TANK = On
VLD-SYSTEM / Normally displayed in a VLD-system
Not displayed if BUFFER TANK = On
POOL POOL is normally displayed
Not displayed if BUFFER TANK = ON or SHUNT GROUP = On
SHUNT GROUP Not displayed if BUFFER TANK = On
BUFFER TANK
BUFFER TANK Select ON or OFF
NUMBER OF
CIRCUITS
Displayed if T2, T3 are connected and Buffer tank = On
Select 1 or 2
SYSTEM SHUNT Displayed if BUFFER TANK = On and NUMBER OF
CIRCUITS = 2
Select ON or OFF
VK 2 SHUNT Displayed if BUFFER TANK = On and NUMBER OF
CIRCUITS = 2 and expansion card is connected
Select ON or OFF
ADDITION
Page 38 Extender
9.3.2 Sub menu SERVICE -> MANUAL TEST
Used to manually test and test operate the heat pump’s components or signal outputs.
Menu selection Meaning
Factory setting
SHUNT /
SYSTEM SHUNT
SHUNT is normally displayed
SYSTEMSHUNT is displayed if BUFFER TANK = On
EXT. CIRC. PUMP Displayed if BUFFER TANK = On
SHUNT GROUP /
VK 2 SHUNT
SHUNT GROUP is displayed if SHUNT GROUP = On
VK 2 SHUNT is displayed if BUFFER TANK = On and VK 2 SHUNT = On
VXV POOL / Normally displayed
Not displayed if BUFFER TANK = ON or SHUNT GROUP = On
For ATELLA/DHP-AX the sub-menu SERVICE -> MANUAL TEST is displayed:
Used to manually test and test operate the heat pump’s components or signal outputs.
Menu selection Meaning
Factory setting
SHUNT GROUP /
SYSTEM SHUNT /
VK2 SHUNT
SHUNT GROUP is displayed if SHUNT GROUP = On
SYSTEMSHUNT is displayed if T2 is connected and BUFFER TANK = On
VK2SHUNT is displayed if T2, T3 are connected and VK2SHUNT = On
EXT. CIRC. PUMP Displayed if BUFFER TANK = On
SYSTEM SHUNT SYSTEMSHUNT is displayed if T2, T3 are connected and SYSTEMSHUNT = On
(Expansion card must be connected)
VXV POOL / Normally displayed
Not displayed if BUFFER TANK = On
Page 39Extender
Alarm handling
10. Alarm
The following alarm could occur:
y BUFFER TANK SENSOR
• Hot water sensor Extender indicates a fault. No hot water production. Uses the heat pump return
line as a sensor.
y SYSTEM SUPPLY SENSOR
• Supply line sensor indicates a fault. No hot water production. The integral is calculated on the supply
line sensor inside the heat pump. The Shunt valve is first closed (- signal) for 120 seconds and then
opened (+ signal) for 15 seconds. This is done to get a small flow through the tank that prevents the
heating system from freezing during the winter season.
y 2ND HEAT CIR. SENSOR
• 2nd heating system’s supply line sensor indicates a fault. No hot water production. The 2nd heat-
ing circuit’s shunt valve is first closed (- signal) for 120 seconds and then opened (+ signal) for 15
seconds. This is done to get a small flow through the tank that prevents the heating system from
freezing during the winter season.
97086U8941 rev 2
Figure 1. Diplomat, Duo, Atria / DHP-H, L, A, C
Appendix (available in english only) Images
Terminal blocks
0
10
17.8
24.853.2
PITTBS 2,5
1
1
T2T2
PITTBS 2,5
2
2
T3T3
PITTBS 2,5
3
3
335336
D-STTBS 2,5
4
Figure 1. Terminal blocks for Diplomat, Duo, Atria / DHP-H, L, A, C
0
10
20 30
40
50
58.6
53.143.1
CLIPFIX 35-5
1
D-ST 2,5
2
PIT 2,5
3
1
T2
PIT 2,5
4
2
T2
PIT 2,5
5
3
T3
PIT 2,5
6
4
T3
PIT 2,5
7
5
335
PIT 2,5
8
6
336
DS-ST 4/2,5
9
ST 2,5-TG
10
7
D-PIT 2,5-MT
11
PIT 2,5-TWIN BU
13
8
N
PIT 2,5-TWIN-PE
14
9
PE
P-FU 5X20
15
D-ST 2,5-TWIN
12
Figure 1. Terminal blocks for Atella / DHP-AX
0
10
20
28.2
7.141.4
PIT 2,5
1
1
361
PIT 2,5
2
2
362
PIT 2,5
3
3
363
PIT 2,5
4
4
365
PIT 2,5
5
5
366
D-ST 2,5
6
Figure 2. Terminal blocks for expansion card
0
10
20
165.0
17.517.5
1 2
160
170
Figure 3. Mounting bar
/
