Samsung AR12MSFTBWKNTV, AR30MSFTBWKNTV Installation Inspection, Performing the gas leak tests

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

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		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

•Heat-resistant insulation of the pipe

•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 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.

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

Pump-down is an operation intended to collect all the system refrigerant in the outdoor unit. This operation must be carried out before disconnecting the refrigerant tubing in order to avoid refrigerant loss to the atmosphere.

46English