Viessmann Vitocal 300-G BW, Installation And Service Instructions Manual

Page: 93 / 216

93
■ No parameters need to be set when
using low tariff with power-OFF. Dur-
ing the power-OFF period, the com-
pressor will be mechanically shut
down.
■ Recommended cable: 5 x 2.5 mm 2
Instantaneous heating water heater power supply
L3
L2
L1
N
?
L3 L2 L1 N N N
?
A
B
C
400 V, 50 Hz
3 / N / PE
A 5-core power cable (recommended
cable 5 x 2.5 mm
2
)
B Control module for the instantane-
ous heating water heater with mains
terminals
C 2 jumpers inserted at the factory at
the neutral conductor
Instantaneous heating water
heater installation instructions
■ Max. fuse rating 16 A
■ With enabled power-OFF (see also
page 80), the compressor is generally
shut down mechanically and a mes-
sage is sent to the control unit. The
remaining output of the instantaneous
heating water heater can, in spite of
the power-OFF, still be selected in 3
stages via parameter 790A (see
page 152).
Fit contact shield (see page 57
and 94) in front of the mains terminals
or seal the low tariff connection (see the
following chapter).
Installation sequence
Power supply
(cont.)
5368 522 UAE
Installation