24
EN
INFORMATION FOR THE INSTALLER
Charging the Refrigerant
Fixed-Speed Type Model
Model
Liquid
pipe
diameter
Gas pipe
diameter
Lenght
of pipe
with
standard
charge
Maximum
distance
between
indoor
and
outdoor
unit
Additional
refrigerant
charge
Max. diff.
in level
between
indoor
and
outdoor
unit
Refrigerant
charge at
maximum
pipe length
Type of
refrigerant
(1)
W09TI
1/4"
(Ø 6.35)
3/8"
(Ø 9.52)
5 m 15 m 15 g/m 10 m 0.720 kg R32
W09TE
1/4"
(Ø 6.35)
3/8"
(Ø 9.52)
5 m 15 m 15 g/m 10 m 0.600 kg R32
W12TI
1/4"
(Ø 6.35)
3/8"
(Ø 9.52)
5 m 15 m 15 g/m 10 m 0.690 kg R32
W12TE
1/4"
(Ø 6.35)
3/8"
(Ø 9.52)
5 m 15 m 15 g/m 10 m 0.640 kg R32
W18TI
1/4"
(Ø 6.35)
3/8"
(Ø 9.52)
5 m 15 m 25 g/m 10 m 1.250 kg R32
W24TI
1/4"
(Ø 6.35)
1/2"
(Ø 12.70)
5 m 15 m 16 g/m 10 m 1.160 kg R32
(1) Refer to the data rating label sticked on the outdoor unit.
Tightening Torque for Protection Caps and Flange Connection
Pipe
Tightening torque
(N x m)
Corresponding stress
(using a 20 cm wrench)
Tightening torque
(N x m)
1/4″ (Ø 6.35) 14 - 18 Wrist strength Service port nut 20 - 25
3/8″ (Ø 9.52) 34 - 42 Arm strength Protection caps 10 - 12
1/2″ (Ø 12.70) 49 - 61 Arm strength
5/8″ (Ø 15.88) 68 - 82 Arm strength
NOTE
• The amount of refrigerant charged is based on the standardized pipe length. If the installed pipe is longer than
the standard length, extra refrigerant needs to be added.
• Reliability cannot be guaranteed if the pipe is longer than the maximum length.
• It may cause reliability, performance, noise, and vibration problems, if piping limitations are not met. Ensure
there’s a minimum piping length, by making loops if necessary, if the indoor unit and outdoor unit are too close.
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