Heat Pump Control Unit Power Supply (230 V~) - Viessmann VITOCAL 222-G Installation And Service Instructions Manual

Installation sequence
Connecting power cables

Heat pump control unit power supply (230 V~)

A
max.16 A
X3.18
X2.1
X1.1
A Mains terminals inside the heat
pump control unit
Note
This supply must never be blocked.
Compressor power supply 400 V~
L1
L2
400 V, 50 Hz
L3
3/PE
?
■ Fuse protection in accordance with the
compressor output (see specification).
■ Low tariff and power-OFF can be
used.
Compressor power supply 230 V~
L1
230 V / 50 Hz
N
1/N/PE
?
■ Fuse protection in accordance with the
compressor output (see specification).
■ Low tariff and power-OFF can be
used.
44
(cont.)
L1
1/N/PE
N
230 V / 50 Hz
?
L1
L2
L3
N
PE
L1
N
PE
■ Max. fuse rating 16 A
■ Standard tariff (no optional economy
tariff with power-OFF for the heat
pump control unit)
■ Recommended cable: 3 x 1.5 mm
2
(5 x 1.5 mm with power-OFF for the
compressor/instantaneous heating
water heater)
■ No parameters need to be set when
using economy tariff with power-OFF
facility. The compressor is shut down
during the power-OFF period.
■ Recommended power cable:
2
5 x 2.5 mm
Max. cable length:
25 m
■ No parameters need to be set when
using economy tariff with power-OFF
facility. The compressor is shut down
during the power-OFF period.
■ Recommended power cable:
2
3 x 4 mm
Max. cable length: 25 m
2