Viessmann 7514659, Инструкция по установке и обслуживанию

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55
Danger
Incorrect core allocation can
result in serious injury and dam-
age to the appliance.
Never interchange cores "L" and
"N".
■ In negotiations with your power supply
utility, different supply tariffs for the
main power circuits may be offered.
Observe the technical connection
requirements of the power supply util-
ity.
■ If the compressor and/or instantane-
ous heating water heater (if installed)
are operated at an economy tariff
(power-OFF), provide an additional
cable (e.g. 3 x 1.5 mm
2 ) for the power-
OFF signal from the distribution board
(meter box) to the heat pump control
unit.
or
Combine the cable for the power-OFF
signal and for the heat pump control
unit power supply (3 x 1.5 mm
2 ) in a
5-core cable.
■ The allocation of the power-OFF (for
compressor and/or instantaneous
heating water heater) is made via the
type of connection and by setting
parameters in the heat pump control
unit.
In Germany, the power supply can be
cut off for up to 3 x 2 hours per day
(24 h).
■ 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.
Installation sequence
Power supply
(cont.)
5546 267 GB
Installation