3 Piping work and refrigerant charge
Piping connection for outdoor unit
SMGB0136 rev.0 - 07/2021
49
3
6 Check to ensure that the stop valves are completely closed before connecting pipes.
7 Connect the eld supplied refrigerant pipes to the indoor unit and outdoor unit. Apply the oil thinly at the seat are nut
and pipe before tightening.
The required tightening torque is as follows:
Pipe Size Tightening Torque (Nm)
Ø 6.35 mm (1/4) 20
Ø 9.52 mm (3/8) 40
Ø 12.70 mm (1/2) 60
Ø 15.88 mm (5/8) 80
Ø 19.05 mm (3/4) 100
8 After connecting the refrigerant piping, seal the open space between knockout hole and refrigerant pipes by using
insulation material.
Unit Side
Nº Description
Insulation Material
Insulation Material
Field Supplied
Insulation Material
9 Operation of stop valve should be performed according to the “3.2.3 Outdoor unit stop valve” explanation.
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