Installation Inspection
Step 4.1 Performing the gas leak tests
1Before 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)
Test parts for the 
indoor unit
Installation
Spindle
Charging core 
Tightening torque for charging port cap (Refer to the table)
Outer diameter |
| Tightening torque | |
|
|
| |
(mm) | Body cap | Charging port cap (N•m) | |
| (N•m) |
| |
|
|
| |
ø 6.35 | 20 to 25 |
|
|
|
|
|
|
ø 9.52 | 20 to 25 |
|
|
|
|
|
|
ø 12.70 | 25 to 30 |
| 10 to 12 |
|
|
|
|
ø 15.88 | 30 to 35 |
|
|
|
|
|
|
Over ø 19.05 | 35 to 40 |
|
|
|
|
|
|
( 1 N•m = 10 kgf•cm )
2Insert inert gas into the pipes connected to indoor and outdoor units.
3Test leakage on the connection parts of the indoor and outdoor units with soap lather or liquid.
Test parts for the indoor unit
Step 4.2 Performing final check and trial operation
1Check the following:
•Strength of the installation site
•Tightness of pipe connection to detect gas leak
•Electric wiring connection
•
•Drainage
•Grounding conductor connection
•Correct operation (Take the following steps.)
2Press 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.
3Press the 
(Mode) button to select Cool or Heat mode. Then take the following
•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.
4Press the 
(Air swing) button to check whether the airflow blades work properly.
5Press the 
(Power) button to stop the trial operation.
Pumping down refrigerant
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