User`s manual

Coat here with refrigerating machine oil

Torque wrench

Piping joint

Flare nut

Sealing pad

(wrap the joint with the sealing pad)

Insulation for fitting

(atteched )

(for liquid pipe)

Insulation for fitting

(atteched )

(for gas pipe)

Gas piping

Liquid piping

Connection of refrigerant pipe



Besure to use both a spanner and torque wrench together as shown in the drawing,connecting or disconnecting pipes

to/from the unit.



Refer to table 1 to determine the proper tightening torque (over tightening may damage the flare and cause leaks.)



When conecting the flare nut,coat the flare both inside and outside with refrigerating machine oil and initially

tighten by hand 3 or 4 turns.



Check the pipe connector for gas leaks,then insulate it as shown in the drawing below.



Use sealing pad (11) to wrap joint between gas pipe and the insulation(8).

Indoor unit installation

Table 1

The maximun leagth for refrigerant piping is 25 meters (but KF(R)-50TW/E1N is 15 meters),when the length exceeds 10

meters,you should charge additional(refrigerant as shown in following for per-meter added).

Indoor unit installation

Pipe gauge Tightening torque

3/8” 30 to 40 N.m

1/2” 45 to 50 N.m

5/8” 60 to 65 N.m

3/4” 70 to 75 N.m