Outdoor Uint Wiring - ComfortStar AHU18-M Owner's Manual & Installation Manual

Air-handler air conditioners
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Air switch
(purchased seperately)
Indoor unit power wires
Outdoor unit power wires
Outdoor unit
Indoor & Outdoor
connective wires
(purchased seperately)
NOTE: The cographs are for explanation purpose only. Your machine may be slightly
di erent. The actual shape shall prevail.
Outdoor Unit Wiring
WARNING
Before performing any electrical or wiring
work, turn o the main power to the
system.
1. Prepare the cable for connection
a. You must rst choose the right cable
size.
NOTE:
In North America, choose the cable
type according to the local electrical switchs
and regulations.
In North America, please choose the
right cable size according to the Minimum
Circuit Ampacity indicated on the
nameplateof the unit.
b. Using wire strippers, strip the rubber
jacketfrom both ends of the signal cable
to reveal approximately 15cm (5.9") of
wire.
c. Strip the insulation from the ends.
d.
Using a wire crimper, crimp u-lugs on the
ends.
NOTE: When connecting the wires, strictly
follow the wiring diagram found inside the
electrical box cover.
Page 38
Air switch
(purchased seperately)
Indoor unit
2. Remove the electric cover of the outdoor unit.
If there is no cover on the outdoor unit, take
o the bolts from the maintenance board
and remove the protection board.
3. Connect the u-lugs to the terminals
Match the wire colors/labels with the labels
on the terminal block. Firmly screw the u-lug
of each wire to its corresponding terminal.
TO POWER SOURCE
Outdoor Unit A
INDOOR UNIT
Outdoor Unit C
E lec tric al h eater u nit power w ires
E lec tric al
heater
unit
Cover
Screw
L1
L2
TO POWER SOURCE
Outdoor Unit B
POWER SUPPLY
1
2
3
L1 L2

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