Gree Ultra Heat GMV Multi VRF Series User Manual

Ultra Heat GMV Multi VRF_Heat Recovery Serial
15
Height difference between indoor units
≤15(49)
h1
Maximum length of Main pipe(3)
≤90(295-1/4)
L1
From IDU to its nearest branch (4)
≤40(131-1/4)
A11,A12,B21,B22,D21,D22
Notices:
(1) Normally, the pipe length from the first branch of IDU to the farthest IDU is 40m (131-1/4feet).
Under the following conditions, the length can reach 90m (295-1/4feet).
1) Actual length of pipe in total: L1+L2x2+L3x2+L4x2+…+L9x2+L10 x2+A11+A12+…+D21+D22≤
1000m (3280- 3/4feet).
2) Length between each IDU and its nearest branch A11, A12, B11, B21, B22, B31, C11, D11, D21,
D22≤40m(131- 1/4feet).
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: L12-L11≤40m (131-1/4feet).
(2) When the outdoor unit is at upper side and height difference is more than 50m, please consult
company for the related technical requirement.
(3) When the maximum length of the main pipe from ODU to the first branch of IDU is ≥50m (164
ft), then adjust the pipe size.
Total rated capacity of
ODU: C (Btu/h)
Pipe between outdoor unit and the first indoor branch
Low pressure gas pipe
mm(inch)
Liquid pipe mm(inch)
High pressure gas pipe
mm(inch)
GMV-VQ72W/A-F(U)
No need to enlarge pipe size
No need to enlarge pipe size
Φ22.2(7/8)
GMV-VQ96W/A-F(U)
No need to enlarge pipe size
No need to enlarge pipe size
Φ22.2(7/8)
GMV-VQ192WM/A-F(U)
Φ34.9(1-3/8)
Φ19.05(3/4)
Φ31.8(1-1/4)
(4) If the length between an IDU and its nearest branch is above 10m (32-4/5feet), then increase the
size of the liquid pipe of IDU (only for the pipe size that is≤6.35mm (1/4inch).
4.3.4 Connection pipe among outdoor modules
Fig.18

Gree Ultra Heat GMV Multi VRF Series Specifications

General

Brand	Gree
Model	Ultra Heat GMV Multi VRF Series
Category	Air Conditioner
Language	English