Gree Ultra Heat GMV Multi VRF Series User Manual

Ultra Heat GMV Multi VRF_Heat Recovery Serial
25
4.5.2 Additional refrigerant charging
Outdoor unit has been charged refrigerant before delivery.
If the pipeline is longer than 1m (39-3/8inch), please refer to the following table for charging amount
of refrigerant. (Liquid pipe prevails)
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 = Added refrigerant quantity A1 for liquid piping + Added
refrigerant quantity A2 for high pressure gas piping
Added refrigerant quantity A1 for liquid 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
Added refrigerant quantity A2 for high pressure gas piping = ∑high pressure gas pipe length ×
Added refrigerant quantity for each meter (inch) of high pressure gas pipe
Diameter of high pressure gas 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)
kg/m
0.054
0.046
0.032
0.024
0.017
0.009
OZ/inch
0.048
0.041
0.029
0.022
0.015
0.008
Note: high pressure gas pipe lengths means all the lengths between ODU and mode exchangers.
(2) ∑Refrigerant charging amount B of every module
Refrigerant charging amount B of every module kg(lb)
Rated Capacity(1000Btu/h)
IDU/ODU rated capacity
collocation ratio C
Quantity of included
IDUs(N)
72
96
50%≤C≤90%
N＜4
0
0
N≥4
0.5(1.1)
1(2.2)
90%＜C≤105%
N＜4
0
0.5(1.1)
8＞N≥4
0.5(1.1)
1.5(3.3)
N≥8
2(4.4)
3(6.6)
105%＜C≤135%
N＜4
0.5(1.1)
1(2.2)
8＞N≥4
2.5(5.5)
3.5(7.7)
N≥8
4(8.8)
5(11.0)
For example 1:

Gree Ultra Heat GMV Multi VRF Series Specifications

General

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