Gree GMV-224WM/B-X, Service Manual

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GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
46
Equivalent length from the first branch to the furthest piping (1)
≤40
L6+L7+L8+L9+j
Height difference
between outdoor
unit and indoor unit
Outdoor unit at upper(4)
≤90 ——
Outdoor unit at lower(4)
≤90 ——
Height difference between indoor units (m)
≤30 ——
Maximum length of Main pipe(2)
≤90
L1
From IDU to its nearest branch (3)
≤10
a,b,c,d,e,f,g,h,i,j
Notices:
（
1
）
. Normally, the pipe length from the first branch of IDU to the farthest IDU is 40m. When those
three conditions as below are satisfied, the length can reached 90m.
① Actual length of pipe in total: L1+L2x2+L3x2+L4x2+…+L9x2+a+b+…+i+j≤1000m;
②
Length between each IDU and its nearest branch a, b, c, d, e, f, g, h, i, j≤40m;
③
Difference between the pipe length from the first branch of IDU to the farthest IDU and the
pipe length from the first branch of IDU to the nearest IDU: L10-
L11≤40m.
（
2
）
.
When the maximum length of the main pipe from ODU to the first branch of IDU is≥90m, then
adjust the pipe size of the gas pipe and liquid pipe of main pipe according to the following table.
Outdoor Model Gas pipe size(mm) Liquid pipe size(mm)
GMV-224WM/B-X
No need to enlarge pipe size No need to enlarge pipe size
GMV-280WM/B-X
No need to enlarge pipe size
Φ12.7
GMV-335WM/B-X
Φ28.6 Φ15.9
GMV-400WM/B-X
Φ31.8 Φ15.9
GMV-450WM/B-X
Φ31.8 Φ15.9
GMV-504WM/B-X
Φ34.9 Φ19.05
GMV-560WM/B-X
Φ34.9 Φ19.05
GMV-615WM/B-X
Φ34.9 Φ19.05
GMV-680WM/B-X
No need to enlarge pipe size
Φ19.05
GMV-730WM/B-X
Φ38.1 Φ22.2
GMV-785WM/B-X
Φ38.
1
Φ22.2
GMV-850WM/B-X
Φ38.1 Φ22.2
GMV-900WM/B-X
Φ38.1 Φ22.2
GMV-960WM/B-X
Φ41.3 Φ22.2
GMV-1010WM/B-X
Φ44.5 Φ22.2
GMV-1065WM/B-X
Φ44.5 Φ22.2
GMV-1130WM/B-X
Φ44.5 Φ22.2
GMV-1180WM/B-X
Φ44.5 Φ22.2
GMV-1235WM/B-X
Φ44.5 Φ22.2
GMV-1300WM/B-X
Φ44.5 Φ22.2
GMV-1350WM/B-X
Φ44.5 Φ22.2
GMV-1410WM/B-X
Φ44.5
Φ25.4