90
Aquarea air / water heat pump – design handbook 07 / 2014
Project Design
Electrical connection
Power supply
Electrical connections for the bi-bloc systems
3 to 5 kW
(single phase)
POWER SUPPLY 1
N
L
POWER SUPPLY 2
N
L
Additional electric heater and
electric immersion heater
Hydro module and
outdoor unit
L N
L N
Power supply 1
Power supply 2
L N
L N
Connecting the indoor/outdoor unit
1 2 3
1 2 3
Fault-current
protective switch
Mains connections
7 to 9 kW
(single phase)
POWER SUPPLY 1
N
L
POWER SUPPLY 2
N
L
Electric immersion heater
and additional backup heater
Hydro module, outdoor unit
and additional electric heater
L N
L N
Power supply 1
L N
L N
Power supply 2
Connecting the indoor/outdoor unit
1 2 3
1 2 3
Fault-current
protective switch
Mains connections
12 to 16 kW
(single phase)
POWER SUPPLY 2
N
L
POWER SUPPLY 1
N
L
Additional electric heater and
electric immersion heater
Hydro module and
outdoor unit
L N
L N
Power supply 2
L N
L N
Power supply 1
Connecting the indoor/outdoor unit
1 2 3
1 2 3
Fault-current
protective switch
Mains connections
9 kW
(three phase)
POWER SUPPLY 2
POWER SUPPLY 1
L
A1
L
A2
L
A3
N
N
L
4
5
Electric
immersion heater
Hydro module, outdoor unit
and additional electric heater
L N
L N
Power supply 2
L
A1
L
A2
L
A3
N
L
A1
L
A2
L
A3
N
Power supply 1
Connecting the indoor/outdoor unit
1 2 3 4 5
1 2 3 4 5
Fault-current
protective switch
Mains connections
12 to 16 kW
(three phase)
POWER SUPPLY 2
L
C1
L
C2
L
C3
N
POWER SUPPLY 1
L
A1
L
A2
L
A3
N
4
5
L
C1
L
C2
L
C3
N
L
C1
L
C2
L
C3
N
Power supply 2
Additional electric heater and
electric immersion heater
Hydro module and
outdoor unit
L
A1
L
A2
L
A3
N
L
A1
L
A2
L
A3
N
Power supply 1
Connecting the indoor/outdoor unit
1 2 3 4 5
1 2 3 4 5
Fault-current
protective switch
Mains connections
Differences of electrical connections for bi-bloc systems, different phases and nominal heating capacities.
5.12 Electrical connection
5.12.1 Power supply
The Aquarea heat pump range contains models specific to either a
single phase of three phase electrical connection. Depending on the
nominal heating capacity and the capacity of the additional electric heater,
individual models differ in the number of mains connections. Models up
to 9 kW nominal capacity are available with two mains connections and
models with 12 to 16 kW with three mains connections.