1-60
1
1
9-2-4.
Installing the Refrigerant Tubing
The size of the refrigerant tubing is as shown in the table below.
Table 1-5
Type
180
200 / 224
Gas tube
ø19.05
(Brazing connection)
ø19.05 (~ 30 m)
ø25.4 (Over 30 ~ 50 m)
(Brazing connection)
Liquid tube
ø9.52 (Flare connection)
Tightening torque (approximate)
: 34 ~ 42 N
•
m
Thickness of connecting tube
: 0.8 mm
ø12.7 (Flare connection)
Tightening torque (approximate)
: 49 ~ 55 N
•
m
Thickness of connecting tube
: 0.8 mm
N OT E
To fasten the flare nuts, apply specified torque.
• W
hen brazing, must be cool the pipe by wet cloths after removing the insulation tube and the cover plate.
• W
hen brazing the gas tubing, cool the tubing with dampened shopcloths as you work, as shown in the figure below, to protect the
unit’s thermistor from the heat generated by brazing.
• W
hen brazing, be careful not to heat the electrical component box. Doing so may cause the unit to be damaged.
Insulation tube
Cover plate
Wet cloth
• P
ipe insulation must be made after leak detection for tubing connection area was performed.
• B
e sure to insulate both the gas tubing and liquid tubing.
In addition, wrap the supplied insulation material around the tubing joints, and fasten in place with vinyl tape or other means.
Failure to insulate the tubing may result in water leakage from condensation.
• P
lug all gaps at tube through-holes in the unit with insulation or a similar substance to prevent air leakage.
9-2-5.
Installing the Drain Piping
9-2-5-1. Before Performing the Installation Drain Piping
(1)
Prepare
standard hard
PVC
pipe (O.D. 32 mm) for the drain and use the supplied drain socket to prevent water leaks.
The
PVC
pipe must be purchased separately.
When
doing this, apply adhesive for the
PVC
pipe at the connection point.
(2) Limitations of Drain Hose Connection
CAUTION
Do not make a trap in the middle of the supplied drain pipe.
Doing so will cause abnormal sound.
Trap prohibited
SM830262-00_大洋州向け シングル天埋_TD&SM.indb 60
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