60
A
Heat pump control unit (connection
on cross connect PCB)
B
Instantaneous heating water heater
(if installed)
C
Compressor
D
Control unit power supply
E
Mains isolator
F
Standard tariff meter
G
Ripple control receiver (contact
open: power-OFF enabled) with
backup fuse
H
Economy tariff meter
K
Feed: TNC system
Two-stage (type BW + BWS)
C
B
A
≈
F
H
5
4
3
4
4
3
3/N
3/N
K
4
kWh
kWh
3
E
D
X3.7
X3.6
L
4
G
Shown excluding fuses and RCD.
A
Heat pump control unit (connection
on cross connect PCB)
B
Instantaneous heating water heater
(if installed)
C
Heat pump stage 1 compressor
(type BW)
D
Control unit power supply
E
Mains isolator
F
Standard tariff meter
G
Ripple control receiver (contact
open: power-OFF enabled) with
backup fuse
Installation sequence
Power supply
(cont.)
5546 267 GB