129
GMV5 HR HEAT RECOVERY
VRF Units Technical Sales Guide
Under the following conditions, the length can reach 90m(295-1/4feet).
1) Actual length of pipe in total: L1+L2x2+L3x2+L4x2+…+L9x2+a+b+…+i+j
≤
1000m(3280-
3/4feet).
2) Length between each IDU and its nearest branch a, b, c, d, e, f, g, h, i, j
≤
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: L10-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
≥
90m(295-
1/4feet), then adjust the pipe size of the gas pipe and liquid pipe of main pipe according to the
following table.
Outdoor Model
Size of connection between outdoor unit and the first indoor branch
Low pressure gas pipe mm(in.)
Liquid pipe mm(in.)
High pressure gas pipe mm(in.)
GMV-Q72WM/B-F(U)
No need to enlarge pipe size
No need to enlarge pipe size
No need to enlarge pipe size
GMV-Q96WM/B-F(U)
No need to enlarge pipe size
Ф
12.7(1/2)
Φ
22.2(7/8)
GMV-Q120WM/B-F(U)
No need to enlarge pipe size
Ф
15.9(5/8)
Φ
28.6(1-1/8)
GMV-Q144WM/B1-F(U)
Ф
34.9(1-3/8)
Ф
15.9(5/8)
Φ
28.6(1-1/8)
GMV-Q144WM/B-F(U)
Ф
34.9(1-3/8)
Ф
15.9(5/8)
Φ
28.6(1-1/8)
GMV-Q168WM/B1-F(U)
Ф
34.9(1-3/8)
Ф
19.05(3/4)
Φ
28.6(1-1/8)
GMV-Q168WM/B-F(U)
Ф
34.9(1-3/8)
Ф
19.05(3/4)
Φ
28.6(1-1/8)
GMV-Q192WM/B-F(U)
Ф
34.9(1-3/8)
Ф
19.05(3/4)
No need to enlarge pipe size
GMV-Q216WM/B-F(U)
Ф
34.9(1-3/8)
Ф
19.05(3/4)
No need to enlarge pipe size
GMV-Q240WM/B-F(U)
No need to enlarge pipe size
Ф
19.05(3/4)
Ф
34.9(1-3/8)
GMV-Q264WM/B-F(U)
No need to enlarge pipe size
Φ
22.2(7/8)
Ф
34.9(1-3/8)
GMV-Q288WM/B-F(U)
No need to enlarge pipe size
Φ
22.2(7/8)
Ф
34.9(1-3/8)
GMV-Q312WM/B-F(U)
No need to enlarge pipe size
Φ
22.2(7/8)
Ф
34.9(1-3/8)
GMV-Q336WM/B-F(U)
No need to enlarge pipe size
Φ
22.2(7/8)
Ф
34.9(1-3/8)
GMV-Q360WM/B-F(U)
No need to enlarge pipe size
Φ
22.2(7/8)
No need to enlarge pipe size
GMV-Q72WM/B-U(U)
No need to enlarge pipe size
No need to enlarge pipe size
No need to enlarge pipe size
GMV-Q96WM/B-U(U)
No need to enlarge pipe size
Ф
12.7(1/2)
Φ
22.2(7/8)
GMV-Q120WM/B-U(U)
No need to enlarge pipe size
Ф
15.9(5/8)
Φ
28.6(1-1/8)
GMV-Q144WM/B-U(U)
Ф
34.9(1-3/8)
Ф
15.9(5/8)
Φ
28.6(1-1/8)
GMV-Q168WM/B-U(U)
Ф
34.9(1-3/8)
Ф
19.05(3/4)
Φ
28.6(1-1/8)
GMV-Q192WM/B-U(U)
Ф
34.9(1-3/8)
Ф
19.05(3/4)
No need to enlarge pipe size
GMV-Q216WM/B-U(U)
Ф
34.9(1-3/8)
Ф
19.05(3/4)
No need to enlarge pipe size
GMV-Q240WM/B-U(U)
No need to enlarge pipe size
Ф
19.05(3/4)
Ф
34.9(1-3/8)
GMV-Q264WM/B-U(U)
No need to enlarge pipe size
Φ
22.2(7/8)
Ф
34.9(1-3/8)
GMV-Q288WM/B-U(U)
No need to enlarge pipe size
Φ
22.2(7/8)
Ф
34.9(1-3/8)
GMV-Q312WM/B-U(U)
No need to enlarge pipe size
Φ
22.2(7/8)
Ф
34.9(1-3/8)
GMV-Q336WM/B-U(U)
No need to enlarge pipe size
Φ
22.2(7/8)
Ф
34.9(1-3/8)
GMV-Q360WM/B-U(U)
No need to enlarge pipe size
Φ
22.2(7/8)
No need to enlarge pipe size
(4) If the length between an IDU and its nearest branch is above 40m(131-1/4feet), then double the
