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INSTALLATIoN
electrical connection
f Route all power supply cables and sensor leads into the ap-
pliance through the cable entry from the left or right. From
the left, route the cables behind the terminal box to the
right-hand side. Lay the lines on the right-hand side through
the empty conduits and cable entry plugs.
f Connect the power cables and sensor leads as detailed
below.
Install cables with the following cross-sections in accordance with
the respective fuse protection:
Fuse protec-
Assignment
tion
B 16 A
Electric emergency/
booster heater
(DHC)
Three-phase
B 16 A
Electric emergency/
booster heater
(DHC)
Single phase
B 16 A
Control unit
12.1 Electric emergency/booster heater and control
voltage
Appliance
effect of the electric emergency/booster
function
heater
Mono energetic
If the dual mode point is undershot, the electric emergen-
operation
cy/booster heater safeguards both the heating operation
and the provision of high DHW temperatures.
Emergency mode
Should the heat pump suffer a fault that prevents its con-
tinued operation, the heating output will be covered by
the electric emergency/booster heater.
HSBB 180: Electrical connection three-phase
Xd02
electric emergency/booster heater (dHC)
Connected load
2,9 kW
5,9 kW
8,8 kW
f Connect the electrical emergency/booster heater with the
desired rating as detailed in the table.
36
| HSBB 180 Plus|HSBB 180 S Plus
Cable cross-section
2.5 mm²
1.5 mm² with only two live wires, rout-
ing according to applicable regulations
2.5 mm²
1.5 mm² when routing a multi-core
cable on a wall or in an electrical con-
duit on a wall
1.5 mm²
Terminal assignment
PE
N
L1
PE
N
L2
L1
PE
N
L3
L2
L1
HSBB 180 S: Electrical connection single phase
Xd02
electric emergency/booster heater (dHC)
Connected
Cable
load
cross-sec-
tion
2,9 kW
2.5 mm²
5,9 kW
2.5 mm²
2.5 mm²
f Connect the electrical emergency/booster heater cables to
deliver the required rating as detailed in the table.
Control voltage
Material losses
!
f Only connect energy efficient circulation pumps ap-
proved by us to the pump connections.
Xd01.2
Heat pump enable signal
EVU
Enable signal, bus cable to the WPM screened with
strain relief in terminal.
Heat pump manager terminal assignment
WARNING Electrocution
Only components that operate with safety extra low
voltage (SELV) and that ensure secure separation from
the mains voltage supply may be connected to the low
voltage terminals of the appliance.
Connecting other components can make parts of the ap-
pliance and connected components live.
f Only use components which have been approved by
us.
Terminal assignment
PE
N
L
PE
N
L
PE
N
L
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