Wiring Requirment; Installation Instruction; Installation Of Cooling And Heating Mode Exchanger; Dimension Of Outdoor Unit And Mounting Hole Position - Gree NCHS1B(U) Owner's Manual

GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger

3.4 Wiring Requirment

Model
NCHS1B(U)
NCHS2B(U)
NCHS4B(U)
NCHS8B(U)
①
Above circuit breaker and power cord specition are selected according to the max power (max currrect).
②
Specification of power cord is based on the working condition where ambient temperature is 40℃(104℉)
and multi-core copper cable (working temperature is 90℃（194℉）, e.g. power cable with YJV cross-linked
copper, insulated PE and PVC sheath) is lying on the surface of slot. If working condition changes, please
adjust the specification according to national standard.
③
Specification of circuit breaker is based on the working condition where ambient temperature of circuit
breaker is 40℃(104℉). If working condition changes, please adjust the specification according to national
standard.
④
When installating the cut-off device next to the unit, the min space between every two levels of cut -off
device should be 3mm (1/8in.) (for indoor unit and outdoor unit).

4 Installation Instruction

4.1 Installation of Cooling and Heating Mode Exchanger

4.1.1 Dimension of Outdoor Unit and Mounting Hole Position

After the unit is installed, a maintenance port should be reserved at the electric box side of unit for
maintenance. The position of maintenance port should be lower than the lower size of unit.
The mode exchanger shall be installed near the maintenance port or air return of indoor unit. (Note:
if it is installed near the air return, please make sure not to affect air return and maintenance).
The following pictures detailedly describe the installation of maintenance port and mode exchanger:
Power
208/230V 1Ph 60Hz
208/230V 1Ph 60Hz
208/230V 1Ph 60Hz
208/230V 1Ph 60Hz
Minimum Circuit
Fuse Capacity(A)
Ampacity(A)
15
15
15
15
7
Maximum
Overcurrent
Protection(A)
10 15
10 15
10 15
10 15