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REMKO KWE serie 150-180-220-250-300-320-370-440 Manual

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8 Electrical wiring
8.1 General connection
and safety instructions
DANGER!
All electrical installation work is to be performed
by specialist companies. Disconnect the power
supply when connecting the electrical terminals.
n The power supply is made at the chiller; a con-
trol line to the indoor unit is not necessary.
n An all-pole separating switch, which discon-
nects individual phase conductors in the event
of a malfunction, must be installed in the
supply line upstream from the unit.
n Electrical wiring must be carried out as fixed
connections in accordance with the applicable
regulations!
n Check all terminal points for stability.
n The supply line must be adequately insulated
on-site and the voltage drop may not exceed
permissible values.
n Make sure that the electrical system is ade-
quate for the operation of the unit and can
supply the operating current necessary for
other units already installed.
n Determine before installation, when connecting
to existing system components, whether the
unit's service connection is adequately sized
for the unit's rated power consumption.
n The connection of the units must always be
carried out with adequately sized, low-resist-
ance earth conductors, and, if necessary, car-
ried out several times (especially with plastic
pipes).
n When installing the units on flat roofs, lightning
protection measures may be necessary.
n All electrical connections such as network
supply, cable remote control etc. must be car-
ried out in the unit's switch cabinet.
n The lines to be installed are to be fed into the
switch cabinet through the cable glands pro-
vided.
n An electrician must determine the sizing and
selection of the fuses and the cross section of
the lines to be installed. Note that starting cur-
rent max. may be up to 10 times nominal cur-
rent
Carry out the following electrical wiring:
n Connection to the power supply
.
n Possible enabling contact for the set mode or
standby.
n Possible operating mode contact for cooling or
heating mode (units with HP function).
n Possible connection of a winter pressure con-
troller (accessory).
n Possible connection of crankcase heating
(accessory).
n Possible connection of cabled remote control
(accessory).
n Possible connection of a heater for anti-freeze
protection medium (accessory, factory installa-
tion only).
Check all plugged and clamped terminals to
verify that they are seated correctly and make
permanent contact. T
ighten as required.
Power supply
The unit requires a fixed three phase current con-
nection. The mains power supply is to be con-
nected to the L1, L2, L3, N and PE terminals.
45
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