Gree GMV-N12U/C-T(U) Owner's Manual page 20

AHU-KIT
Selection of branch pipe between
indoor units
Y-type Manifold
T- type Manifold
(3) When several AHU-KITs are connected to one AHU, branch pipe (e) shall be selected
according to the following table:
Model(Combined)
GMV-N48U/C-T(U)+GMV-N192U/C-T(U)
GMV-N96U/C-T(U)+GMV-N192U/C-T(U)
GMV-N192U/C-T(U)+GMV-N192U/C-T(U)
3.5.2.2 Selection of Piping Dimension
Piping dimension can be selected according to the total rated capacity of upstream or
downstream modules. Detailed requirements are as below:
(1) Piping (A, B, C) from ODU to branch pipe shall be selected according to the rated capacity
of ODU;
(2) Piping D between branch pipes of ODU modules shall be selected according to the total
rated capacity of upstream modules;
(3) Piping E and G of branch pipe at IDU side shall be selected according to the total rated
capacity of downstream IDUs;
(4) Piping F from IDU branch pipe to IDU shall be selected according to the rated capacity of
IDU;
(5) Piping (I1, I2, J, H) between branch pipe and AHU-KIT shall be selected according to the
capacity of AHU-KIT.
Relationship between capacity and piping dimension is as below:
Rated capacity (kBtu/h)
Q≤72
72<Q≤96
96<Q≤120
120<Q≤144
144<Q≤168
Total rated capacity of downstream
IDUs C(kBtu/h)
C<68
68≤C≤102
102<C≤239
239<C≤461
461<C
C≤136
C≤232
232<C
Gas pipe mm(inch)
Φ19.05(3/4)
Φ22.2(7/8)
Φ28.6(1-1/8)
Φ28.6(1-1/8)
Φ28.6(1-1/8)
16
FQ01A/A
FQ01B/A
FQ14/H1
FQ18/H1
FQ18/H2
Branch pipe
FQ02U/A
FQ02U/A
FQ02U/A
Liquid pipe mm(inch)
Φ9.52(3/8)
Φ9.52(3/8)
Φ12.7(1/2)
Φ12.7(1/2)
Φ15.9(5/8)
Model
FQ02/A
FQ03/A
FQ04/A
Quantity
1
1
1