Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
22
(2) Wiring connection
Make wiring to supply power to the outdoor unit, so that the power for the indoor unit is supplied by
terminals.
For the detailed wiring connection with the indoor units, see the corresponding indoor operation
and instruction manual.
To Indoor Unit
1(L) 2(N) 3 4
Y/G
POWER SUPPLY:
3N~,380-400V,50Hz
N 1 2 3
Y/G
R S T
HDU-42CF03/H
To Indoor Unit
HDU-42CF03/HHDU-42CF03/H
INDOOR UNIT TERMINAL BLOCK
Y/G
Y/G
HPU-42HF03
OUTDOOR UNIT
TERMINAL BLOCK
N L N 3 4 5
R S T
W B R BR GR
L N 3 4 5
POWER SUPPLY
HBU-
18CF03
(3) Wiring procedure
1) Remove set screws on the side before taking off the front panel toward
the direction shown in figure.
2) Connect wires to the terminal block correctly and fix the wires with a
wire clamp equipped nearby the terminal block.
3) Route the wires in a proper way and penetrate the wires through the
opening for electric wiring on the side panel.
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