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Step 4: Connect signal and power cables
The outside unit's terminal block is protected by
an electrical wiring cover on the side of the unit.
A comprehensive wiring diagram is printed on
the inside of the wiring cover.
WARNING
BEFORE PERFORMING ANY ELECTRICAL
OR WIRING WORK, TURN OFF THE MAIN
POWER TO THE SYSTEM.
1. Prepare the cable for connection:
USE THE RIGHT CABLE
Please choose the right cable refer to
" Cable types" in page 22.
CHOOSE THE RIGHT CABLE SIZE
The size of the power supply cable, signal cable,
fuse, and switch needed is determined by the
maximum current of the unit. The maximum
current is indicated on the nameplate located
on the side panel of the unit.
NOTE: In North America, please choose the right
cable size according to the Minimum Circuit
Ampacity indicated on the nameplate of the unit.
a. Using wire strippers, strip the rubber
jacket from both ends of cable to reveal
about 40mm (1.57in) of the wires inside.
b. Strip the insulation from the ends of the wires.
c. Using a wire crimper, crimp u-lugs on the
ends of the wires.
ATTENTION TO LIVE WIRE
PAY
While crimping wires, make sure you clearly
distinguish the Live ("L") Wire from other wires.
WARNING
ALL WIRING WORK MUST BE PERFORMED
STRICTLY IN ACCORDANCE WITH THE
WIRING DIAGRAM LOCATED INSIDE OF
WIRE COVER OF THE OUTDOOR UNIT .
2. Unscrew the electrical wiring cover and remove it.
3. Unscrew the cable clamp below the terminal
block and place it to the side.
4. Connect the wire according to the wiring
diagram, and firmly screw the u-lug of each
wire to its corresponding terminal.
5. After checking to make sure every connection is
secure, loop the wires around to prevent rain
water from flowing into the terminal.
6. Using the cable clamp, fasten the cable to the
unit. Screw the cable clamp down tightly.
7. Insulate unused wires with PVC electrical tape.
Arrange them so that they do not touch any
electrical or metal parts.
8. Replace the wire cover on the side of the unit,
and screw it in place.
NOTE: If the cable clamp looks like the following,
please select the appropriate through-hole according
to the diameter of the wire.
Buckle
Three size hole: Small, Large, Medium
When the calbe is not fasten enough, use the
buckle to prop it up , so it can be clamped tightly.
Cover
Screw
Page 28
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