Gree VRF Fresh Air Series, Owner'S Manual

Page: 10 / 27

Multi Variable Air Conditioners Duct Type Indoor Unit
6 7
Wire Type
Total Length of
Communication Line L(m) Wire Gauge (mm
2
) Wire Standard Remark
Light/Common PVC
Jacket Soft Wire
L
≤
250 2×0.75
~
2×1.25 IEC 60227-5
The total length of
communication line
should not exceed 250m
3.3.2 Select communication line for indoor unit and indoor unit (outdoor unit)
Outdoor
unit1
Outdoor
unit 2
Outdoor
unit 3
Outdoor
unit 4
Indoor Unit 1 Indoor Unit 2 Indoor Unit n
LO1
L=LO1+LO2+LO3+Li1+Li2+.......+Lin(n
≤
80)
LO2 LO3 Lin
Fig 3.3.2
Wire Type
Total Length of
ommunication
Line L(m)
Wire Gauge (mm
2
) Wire Standard Remark
Light/Common PVC
Jacket Soft Wire
L
≤
1000
≥
2×0.75 IEC 60227-5
If wire gauge is 2X1 mm
2
, then
it’s OK to increase the length of
communication line. But total
length should not exceed 1500m.
3.4 Wiring Requirements
(1) Power Cord Size and Air Switch Capacity
Model Power Supply
Air Switch
apacity
(A)
Minimum Sectional
Area of Ground
Wire (mm
2
)
Minimum
Sectional Area of
Power Cord (mm
2
)
GMV-NX140P/A(X1.2)-K 220-240V ~50Hz 6 1.0 1.0
GMV-NX224P/A(X2.0)-M 380-415V 3N ~50Hz 6 1.0 1.0
GMV-NX280P/A(X2.5)-M 380-415V 3N ~50Hz 6 1.0 1.0
GMV-NX280P/A(X3.0)-M 380-415V 3N ~50Hz 6 1.0 1.0
GMV-NX450P/A(X4.0)-M 380-415V 3N ~50Hz 6 1.0 1.0
Notes:
①
The size of circuit breaker and power cord in above sheet is selected based on the max
power (max current) of unit.
②
Above selection requirements of power cord size: Power cord size is based on multicore
copper core cable with operation temperature of 90°C when laying on wire groove at 40°C ambient
temperature (IEC 60364-5-523). If the operation condition is different, please calculate according to
national standard.
③
Above selection requirements of circuit breaker size: Circuit breaker size is based on ambient
temperature of 40°C when the circuit breaker is working. If the operation condition is different, please
calculate according to circuit breaker specification.
(2) Install circuit breaking device near the unit. The minimum distance between each stage of
circuit breaking should be 3mm (The same for both indoor unit and outdoor unit).