Gree NCHS1B(U) - Parameter Table; 3 Preparation before Installation; Standard Accessory

GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
3
2.2 Parameter table
Model
Unit
NCHS1B(U)
NCHS2B(U)
NCHS4B(U)
NCHS8B(U)
Rated voltage
V
208/230V
208/230V
208/230V
208/230V
Max. quantity of connecting indoor
unit
-
8
16
32
64
Max. branch quantity of
connecting indoor unit
-
1
2
4
8
Max. quantity of connecting indoor
unit for each branch
-
8
8
8
8
Max. total capacity of connecting
indoor unit for each branch
Btu/h
48500
48500
48500
48500
Total capacity of connecting
indoor unit for mode convertor
Btu/h
48500
96000
154000
232000
Size of high pressure pipe (mode
convertor connects outdoor unit)
mm(in.)
15.9(5/8)
19.05(3/4)
22.2(7/8)
22.2(7/8)
Size of low pressure gas pipe
(mode convertor connects outdoor
unit)
mm(in.)
22.2(7/8)
22.2(7/8)
28.6(1-1/8)
28.6(1-1/8)
Size of liquid pipe (mode
convertor connects outdoor unit)
mm(in.)
9.52(3/8)
9.52(3/8)
12.7(1/2)
15.9(5/8)
Size of gas pipe (mode convertor
connects indoor unit)
mm(in.)
15.9(5/8)
15.9(5/8)
15.9(5/8)
15.9(5/8)
Size of liquid pipe (mode
convertor connects indoor unit)
mm(in.)
9.52(3/8)
9.52(3/8)
9.52(3/8)
9.52(3/8)
3 Preparation before installation
NOTICE
！
The product photos are only for reference. The unit for size is mm(in.), except otherwise
stated.
3.1 Standard Accessory
Please use below provided standard parts according to requirement.
No.
Name
Photo
Quantity
Purpose
1
M10X8
Nut with washer M10X8
4
Used for hanging mode
exchanger
2
Nut M10
(hesagon nut M10X8.4)
4
Used for hanging mode
exchanger
3
Washer 10
(spring washer M10X2.6)
4
Used for hanging mode
exchanger
4
High-tenperature tieline
8
Wrap sponges at the
connection position
5
Installation template
/
1
Used for drilling holes at the
ceiling
6
M4X12
(green bonding screw M4X12)
1
Used for connecting the
earthing cord
7
silencer 1
1
The sizes of both nozzles
are IDΦ19.3 (3/4)and
ODΦ19(3/4)
，
nozzle
ODΦ19(3/4) is used for
connecting the high
pressure gas pipe of
NCHS2B(U).