Service manual

REFRIGERANT PIPING CONNECTION
• Align the centre of the pipes.
• Sufficiently tighten the flare nut with fingers, and then tighten it with a spanner and torque wrench
as shown (see fig. 18 and fig. 19).
• Select the correct tightening torque (shown table 1) in order to prevent the pipes, connecting pieces
and nuts from being damaged.
ELECTRICAL WORK
Electric safety regulations for the initial Installation
1.
In case of an unsafe (electrical, mechanical and/or refrigerant etc) situation do not install the aircon-
ditioner.
2. Power voltage supplied should be in the range of 95%~105% of rated voltage on rating table.
3.
A creepage protector and a 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.
5. Connect the wires according the attached electrical connection diagram located on the panel of the
outdoor unit.
G
ATTENTION
• Excessive torque can break nut depending on installation conditions.
• All refrigerant work and refrigerant piping should comply with the local legislation, standards
and codes and should only be done by qualified and skilled engineers.
4
60
F
ig. 13
S
eal
Drain joint
B
ase pan hole of
o
utdoor unit
S
eal
D
rain pipe
I
ndoor unit tubing
Flare nut
Pipings
F
ig. 18
F
ig. 19
Outer
diam.
Tightening torque
(N.cm)
Additional tightening
torque (N.cm)
Ø 6.35
1570
(160kgf.cm)
1960
(200kgf.cm)
Ø 9.53
2940
(300kgf.cm)
3430
(350kgf.cm)
Ø 12.7
4900
(500kgf.cm).
5390
(550kgf.cm)
Ø 16
7360
(750kgf.cm).
7850
(800kgf.cm)
Table 1: tightening torque