Gree KM48H4O Service Manual page 100

Super Free Match
Service Manual
1) Piping adapter(Optional accessories)
NO. Name
1 Φ15.9→Φ19.05
2 Φ9.52→Φ12.7
3 Φ9.52→Φ15.9
4 Φ6.35→Φ9.52
2) Install the piping adapter
① Refer to the piping connection size of the outdoor unit and indoor units, the appropriate piping adapter
should be adopted.
② Align the flared end of copper tube with the center of pipe joint. Tighten the nuts with hands.
3) Sealing the unconnected port
If the port of BU module indoor side does not connected to one indoor unit, the port must be sealed to
prevent refrigerant leaks. Please tighten the copper flaring nuts to the unconnected port with torque wrench until
you hear a "click".
Caution!
The unconnected ports must not be sealed well by the plastic flaring nuts but by the copper flaring nuts in the
accessories.
6.6.2 KM21-BBU12-3 and KM21-BBU13-3
1) Piping adapter(Standard accessories)
INSTALLATION
94
Port A Port B
(mm) (mm)
Φ15.9 Φ19.05
Φ9.52 Φ12.7
Φ9.52 Φ15.9
Φ6.35 Φ9.52