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30
ELECTRICAL WORK
Caution
Align the center of the pipes.
Sufficiently tighten the flare
nut with fingers, and then tighten
it with a spanner and torque wrench
as shown in Fig.58 & 59
Tightening Connection
Excessive torque can break nut
depending on installation conditions.
The 24K indoor unit can only be connected with
A system, if there are two 24K indoor units, they
can be connected with A and B system.(Fig.60)
Fig.59
Indoor unit tubingFlare nutPipings
Fig.58
Electric safety regulations for the initial Installation
1. If there is serious safety problem about the power supply, the technicians should refuse
to install the air conditioner and explain to the client until the problem is solved.
2. Power voltage should be in the range of 90%~110%of rated voltage.
3. The creepage protector and main power switch with a 1.5 times capacity of Max. Current
of the unit should be installed in power circuit.
4. Ensure the air conditioner is grounded well.
7. An individual branch circuit and single receptacle used only for this air conditioner must be available.
5. According to the attached Electrical Connection Diagram located on the panel of the outdoor
unit to connect the wire.
6. All wiring must comply with local and national electrical codes and be installed
by qualified and skilled electricians.
Electrical work
Outer
diam.
Indoor unit capacity
Tightening
torque(N.cm)
Liquid
Additional tightening
torque(N.cm)
Gas
6.35
7K/9K/12K
12.7
24K
9.52
18K
1500
(153kgf.cm)
1 / 4
1600
(163kgf.cm)
3 / 8
3500
(357kgf.cm)
1 / 4
3600
(367kgf.cm)
5 / 8
2500
(255kgf.cm)
1 / 4
2600
(265kgf.cm)
1 / 2
When select a 24K indoor unit
Fig.60
Unit:in
Connective pipe size of A and B system:
A(1/2in)
A(1/4in)
B(3/8in)
B(1/4in)
C(3/8in)
C(1/4in)
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