Gree GMV-Pdhm224W/Na-M

25
Connection of Indoor and Outdoor Unit
●Installation requirements of refrigerant piping
1. Specification of Connecting Pipes
R410A refrigerant system
External
Diameter(mm/inch)
Thickness(mm) Type
Φ6.35(1/4)
≥0.8
0
Φ9.52(3/8)
≥0.8
0
Φ12.70(1/2)
≥0.8
0
Φ15.88(5/8)
≥1
0
Φ19.05(3/4)
≥1
1/2H
Φ22.2(7/8)
≥1.5
1/2H
Φ25.40(1/1)
≥1.5
1/2H
Φ28.60(9/8)
≥1.5
1/2H
Φ34.90(11/8)
≥1.5
1/2H
Φ38.10(12/8)
≥1.5
1/2H
Φ41.30(13/8)
≥1.5
1/2H
Φ44.45(7/4)
≥1.5
1/2H
Φ54.1(17/8)
≥1.5
1/2H
2. Allowable Length and Height Differences of the Connecting pipes between the Indoor and Outdoor Units
R410A refrigerant system
Allowable
(m/ft)
value
Fitting pipe
Total length (actual length) of fitting pipe 500/1640 L
1
+L
2
+L
3
+L
4
+…+L
9
+a+b+…+s+t
Actual length 150/492 Length of the furthest fitting
pipe
Equivalent length 175/574
L
1
+L
6
+L
7
+L
8
+L
9
+o+t
Equivalent length of fitting pipe
from the 1
st
branch joint to farthest indoor unit
40/131.2 L
1
+L
6
+L
7
+L
8
+L
9
+o+t
Outdoor unit at
upper
50/164
——
Height differences between
indoor unit and outdoor unit
Outdoor unit at
lower
40/131.2
——
Height differences between indoor units 15/49.2 ——