Samsung AF28HVSDADFNMG manual FfTightening of connection parts, FfPipe insulation

Connecting pipes

ffTightening of connection parts

Alight the pipes to be connected and tighten the flare nuts with your hands first and then with a torque wrench, tighten it in a direction shown in below illustration.

-- You can avoid of gas leakage by applying refrigerant oil on the flare connection part.

Pipe	Flare connection part	Monkey
		spanner
		Torque
Flare nut		wrench

Diameter(D)	ø6.35mm	ø9.52mm	ø12.70mm	ø15.88mm	ø19.05mm
Torque (kgf•cm)	140~170	250~280	380~420	440~480	990~1210

• Apply the torque depending on the diameter and tighten it securely to make sure there is no leakage.

CAUTION

5.Eliminate the uncondensed gas with vacuum pump and open the service valve to put the refrigerant. -- Make sure to perform leak test. (Refer to 'Performing leak test' on page 51.)

6.Insulate the drain hose after connecting it.

-- Insulate it correctly to avoid dew formation.

ffPipe insulation

1) Insulate the refrigerant pipes heavily with the finishing tape.	Pipe insulation	Finishing tape
If the insulation is poor, dew may form and leak through the
indoor.

2)Use finishing tape wind up the refrigerant pipe.

3)When you bend the pipe and secure a minimum bending radius of 100mm to prevent any distortion of the pipe.

Indoor/outdoor unit

communication cable Indoor/outdoor unit power cable

7. Wind a finish tape when connecting refrigerant pipe, and communication cable is completed.

Indoor unit	Outdoor unit
Low pressure
pipe
High pressure		Valve core
pipe
Flare nut	Low pressure side	L wrench
	High pressure side	Service port cap
	Stop valve
	Service port

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사우디,인도,나이지리아향 FAC MEMORY 냉방_IBIM_EN_04773A-00.indd 44 2014-09-11 오후 1:16:16