Gree KM48H4O Service Manual page 105

Indoor unit 3
Indoor unit 4
Indoor unit 5
Indoor unit 6
Serial No.
L1
L2
L4
1A
1B
1C
2A
2B
2C
The total length of the liquid pipes: 20+10+10+5+5+5+5+5+5=70(m).
Thus, the total length is over than 30m, so the air conditioner needs to add refrigerant.
 Additional refrigerant charge
Σ
the Liquid Pipe Length of Φ6.35×0.022kg/m +
=(5+5+5+5+5+5)(m)×0.022kg/m+(20+10+10)(m)×0.054kg/m-1.47(kg)
=1.35(kg)
4) Additional refrigerant charge record
Diameter(mm)
Φ6.35
Φ9.52
Total
6.10.2 Procedures for adding refrigerant
NO. 1
Name Outdoor unit
NO. 6
Name Hi-knob
1) When the liquid and gas stop valves have not been opened, the system is under the vacuum:
① Refer to the left of the figure above; connect the R410A tank to the system.
② Turn on the R410A tank and the Hi-knob; charge the R410A refrigerant into the unit from the liquid side
Wall mounted type
Wall mounted type
Duct type
Wall mounted type
Diameter(mm)
Φ9.52
Φ9.52
Φ9.52
Φ6.35
Φ6.35
Φ6.35
Φ6.35
Φ6.35
Φ6.35
Σ
Total length(m)
2 3
Service port Liquid side stop valve
7
Lo-knob
KW09HUBA1D
KW09HMBA3D
KM09HTBA3D
the Liquid Pipe Length of Φ9.52×0.054kg/m-1.47(kg)
Additional refrigerant charge(kg)
4
Gas side stop valve
8
R410A tank
Super Free Match
Service Manual
KM09HFDI
Length(m)
20
10
10
5
5
5
5
5
5
5
Pressure-vacuum
gauge
9
Scale
INSTALLATION
99