Gree GMV-120WM/B-F Service Manual

GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL
89
9 REFRIGERANT PERFUSION
9.1 CALCULATION METHOD FOR PERFUSING REFRIGERANT
Outdoor unit has been charged refrigerant before delivery.
Charge additional refrigerant for field-installed connecting pipe. If the pipeline is longer than
1m(39-3/8inch), please refer to the following table for charging amount of refrigerant. (Liquid pipe
prevails)
How much additional refrigerant should be charged
Total refrigerant charging amount R= Pipeline charging amount A + ∑charging amount B of every
module
(1) Pipeline charging amount
Added refrigerant quantity A for piping = ∑Liquid pipe length × Added refrigerant quantity for each
meter(inch) of liquid pipe
Diameter of liquid pipe mm(inch)
28.6(1-1/8)
25.4(1)
22.2(7/8)
19.05(3/4)
15.9(5/8)
12.7(1/2)
9.52(3/8)
6.35(1/4)
kg/m
0.680
0.520
0.350
0.250
0.170
0.110
0.054
0.022
OZ/inch
0.61
0.47
0.31
0.22
0.15
0.10
0.05
0.02
(2) ∑Refrigerant charging amount B of every module
Refrigerant charging amount B of every
module kg(Pounds)
Rated Capacity(1000Btu/h)
IDU/ODU rated
capacity collocation
ratio C
Quantity of included
IDUs(N)
72
96
120
50%≤C≤90%
N＜4
0
0
0
N≥4
0.5(1.1)
0.5(1.1)
0.5(1.1)
90%＜C≤105%
N＜4
1(2.2)
1(2.2)
1.5(3.3)
8＞N≥4
2(4.4)
2(4.4)
3(6.6)
N≥8
4(8.8)
3.5(7.7)
4(8.8)
105%＜C≤135%
N＜4
2(4.4)
2(4.4)
2.5(5.5)
8＞N≥4
4(8.8)
3.5(7.7)
4(8.8)
N≥8
4.5(9.9)
4.5(9.9)
5(11.0)
For example:
The OUD is composed of 3 modules: GMV-72WM/B-F(U), GMV-120WM/B-F(U) and
GMV-120WM/B-F(U). The IDUs are made up of 7sets of GMV-ND48PHS/A-T(U).
IDU/ODU rated capacity collocation ratio C= 48×7/(72+120+120)=108%.The quantity of included
IDUs is more than 4 sets. Please refer to the above table.
Refrigerant charging amount B for GMV-72WM/B-F(U) module is 4.0kg(8.8pounds).
Refrigerant charging amount B for GMV-120WM/B-F(U) module is 4.0kg(8.8pounds).
Refrigerant charging amount B for GMV-120WM/B-F(U) module is 4.0kg(8.8pounds).

Gree GMV-120WM/B-F Specifications

General

Brand	Gree
Model	GMV-120WM/B-F
Category	Inverter
Language	English