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Installation Inspection
Step 3.1 Performing the gas leak tests
1. Before inspecting the leakage, use a torque wrench
to close the cap for the stop valve. (Comply with a
tightening torque for each size of the diameter, and
tighten the cap firmly to prevent any leakage.)
Tightening torque for body
cap (Refer to the table)
Charging core
R-22: Thread of the screw - 7/16-2OUNF
R-410A: Thread of the screw -1/2-2OUNF
Tightening torque for charging port cap (Refer to the table)
Outer diameter
Body cap
(mm)
(N•m)
ø 6.35
20 to 25
ø 9.52
20 to 25
ø 12.70
25 to 30
ø 15.88
30 to 35
2. Insert inert gas into the pipes connected to indoor and
outdoor units.
3. Test leakage on the connection parts of the indoor and
outdoor units with soap lather or liquid.
40 English
Spindle
Tightening torque
Charging port cap (N•m)
10 to 12
( 1 N•m = 10 kgf•cm )
Test parts for the
indoor unit
Step 3.2 Performing final check and
trial operation
1. Check the following:
• Strength of the installation site
• Tightness of pipe connection to detect gas leak
• Electric wiring connection
• Heat-resistant insulation of the pipe
• Drainage
• Grounding conductor connection
• Correct operation (Take the following steps.)
2. Press the
(Power) button on the remote control to
check the following:
• The indicator on the indoor unit lights up.
• The airflow blade opens and the fan gears up for
operation.
3. Press the
(Mode) button to select Cool or Heat
mode. Then take the following sub-steps:
• In Cool mode, use the Temperature button to set
the set temperature to 16 °C.
• In Heat mode, use the Temperature button to set
the set temperature to 30 °C.
• Check whether, approximately 3 to 5 minutes later,
the outdoor unit starts, and a cool or warm air
blows out.
• After 12 minutes of stationary condition, check the
indoor unit air treatment.
4. Press the
(Air swing) button to check whether the
airflow blades work properly.
5. Press the
(Power) button to stop the trial operation.
A(Gas)
B(Liquid)
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