58
■ The
heat pump control unit/PCB
must be supplied with power
without
being interrupted by the power supply
utility. Tariffs subject to possible shut-
down must not be used here.
The power supply for the heat pump
control unit (3 x 1.5 mm
2
) and the cable
for the power-OFF signal can be com-
bined in a single 5-core cable.
■ For accessories and external compo-
nents that are not to be connected to
the heat pump control unit, connect the
power supply on the same phase as
the heat pump control unit; we recom-
mend using the same MCB/fuse.
Connection to the same MCB/fuse
provides additional safety when the
power is switched off. Observe the
power consumption of the connected
consumers.
Information regarding the compres-
sor power supply
■
!
Please note
Incorrect phase sequence can
cause damage to the appli-
ance.
Make the compressor power
supply
only
in the phase
sequence specified (see termi-
nals) with a
clockwise
rotating
field.
■ Characteristics of the compressor
power MCBs: see "Specification".
Power cables
The PE wire must be approx. 10 mm lon-
ger than the N and L wires.
Heat pump control unit power supply 230 V~
L1
X3.18
N
X2.1
?
X1.1
A
1/N/PE
230 V / 50 Hz
max.16 A
A
Mains terminals inside the heat
pump control unit
Note
This supply must never be blocked.
■ Max. fuse rating 16 A
■ Standard tariff: No optional economy
tariff with power-OFF for the heat
pump control unit
■ Recommended power cable:
3 x 1.5 mm
2
■ Recommended power cable with
power-OFF for compressor/ instanta-
neous heating water heater:
5 x 1.5 mm
2
Installation sequence
Power supply
(cont.)
5546 273 GB
Содержание BW 351.A07
Страница 28: ...28 Removing the top panel 1 Installation sequence Siting the heat pump cont 5546 273 GB ...
Страница 88: ...88 Opening the casing door Troubleshooting Repairs cont 5546 273 GB ...
Страница 90: ...90 D C Q R S V K X P F J U T X Q S T R D Y W Type BWC 351 A07 Troubleshooting Repairs cont 5546 273 GB ...