
9
Electrical wiring
9.1 Electrical connection - indoor
unit
The following instructions describe the electrical
connection of the inner module.
1.
Remove the cover from the indoor unit by
pressing it upwards and pulling it forwards
out of the rear groove.
2.
Guide the supply cable to the indoor units
through the cable openings, and also route
the control line between indoor and outdoor
units and the cables for external devices and
probes into the indoor unit. Note that the
cable openings are located at the top.
3.
Connect the power supply and control line of
the indoor units to the terminals.
4.
Connect all secondary consumers
(HGM,HGU, changeover valves etc.) to the
I/O module.
NOTICE!
Attach cables in accordance with the connec-
tion schematic and/or the circuit diagram in the
control box.
NOTICE!
Ensure correct polarity when connecting the
electrical leads, especially the control cable.
The number of lines and the sensors is
dependent on the configuration of the heating
system and the components.
At the site, avoid adding cable inlets.
NOTICE!
It is necessary to provide a separate RCD 100
mA, type B (universal current-sensitive) with a
contact load of 40 A for the heat pump.
Fig. 11: Indoor unit LWM IM 300
You can find information on the electrical con-
nections of the indoor and outdoor unit, on the
terminal assignment of the I/0 module, as well
as on the circuit diagrams in the separate "Elec-
trical wiring" operating instructions
23
Содержание LWM IM 300
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