5. Electric wiring
(1) Selection of size of power supply and interconnecting wires.
Precautions for Electric wiring
Electric wiring work should be conducted only by authorized personnel.
Do not connect more than three wires to the terminal block. Always use round type
crimped terminal lugs with insulated grip on the ends of the wires.
Use copper conductor only.
Select wire sizes and circuit protection from table below. (This table shows 20 m length wires with less
than 2% voltage drop.)
When connect the pipe to the unit or dismantling the pipe from the unit, please follow the figure shown,
use spanner and torque spanner together.
When connect cone nut, the inner side and outside of cone nut should paste with refrigerant oil. Use
hand to twist 3-4 rings, then fasten with spanner.
Referring to Table I to confirm the fasten torque. (too tight may damage nut leading to leakage)
Check if the connection pipe leaks, then do heat insulation treatment, as below figure shown.
Only use seal cushion to bind the joint part of air pipe and heat insulation parts.
9.52
12.0~12.4
18.6~19.0
3270~3990 N.cm
(333~407 kgf.cm)
6180~7540 N.cm
(630~770 kgf.cm)
(mm)
Specification of pipe
15.88
Tighten torque
Cone
Cone dimension
A (mm)
R0.4~0.8
A
90 0.5
45 2
22.9~23.3
9720~11860 N.cm
(990~1210 kgf.cm)
19.05
Liquid pipe
Gas pipe Electric box
Upper
Air inlet
Air outlet
Down side
Drain hose connection hole
VP25 PVC pipe
310
30
530
80
510
Paste the refrigerant oil here
Torque spanner
Spanner
Pipe joint
Cone nut
Middle size seal cushion (accessory)
(Use seal cushion to
bind the pipe joint)
Clamp
Heat insulation (accessory)
(for liquid pipe)
(for gas pipe)
Heat insulation (accessory)
Gas pipe
Liquid pipe
WARNING
DANGER OF BODILY INJURY OR DEATH
TURN OFF ELECTRIC POWER AT CIRCUIT BREAKER OR POWER SOURCE BEFORE
MAKING ANY ELECTRIC CONNECTIONS. GROUND CONNECTIONS MUST BE
COMPLETED BEFORE MAKING LINE VOLTAGE CONNECTIONS.
-96-
Installation