Gree GMV-450WM/B-X User Manual

D.C. Inverter Multi VRF Modular
34
If indoor unit is equipped with auxiliary electric heater, select capacity of circuit breaker as per
auxiliary electric heater, which requires special setting.
Indoor unit models (with auxiliary
electric heater)
Capacity of circuit
breaker (A)
Min. sectional area of
grounding wire (mm
2
)
Min. sectional area of
power cord (mm
2
)
22,25,28,32,36 duct type unit
6
1.0
1.0
40,45,50 duct type unit
10
1.0
1.0
56,63,71,80 duct type unit
16
1.5
1.5
90,100,112,25,140 duct type unit
10
1.0
1.0
28,36,45,50 cassette type unit
6
1.0
1.0
56,63,71,80 cassette type unit
10
1.0
1.0
90,112,125,140 cassette type unit
6
1.0
1.0
Note:
①
Specification of circuit breaker and power cord is selected on the basis of unit’s maximum
power (max. current).
②
Specification of power cord is based on the working condition where ambient temperature
is 40
℃
and multi-core cable with copper conductor(working temperature is 90
℃
, e.g.
power cable with YJV cross-linked copper, insulated PE and PVC sheath) is lying on
the surface of slot. If working condition is different, please adjust the specification
according to national standard.
③
Copper-core cable must be used.
④
The above sectional area is suitable for a maximum distance of 15m. If it’s over 15m,
sectional area must be expanded to prevent overload current from burning the wire or
causing fire hazard.
⑤
Specification of circuit breaker is based on the working condition where the ambient
temperature of circuit breaker is 40
℃
. If working condition is different, please adjust the
specification according to national standard.
⑥
The circuit breaker should include magnetic trip function and thermal trip function so that
system can be protected from short circuit and overload.
⑦
An all-pole disconnection switch having a contact separation of at least 3mm in all poles
should be connected in fixed wiring
4.5.3 Connection of power cord
Warning: before obtaining access to terminals, all supply circuits must be disconnected.
Note:
(1) If units are type I electrical appliances, they must be reliably grounded.
(2) Ground resistance must be in accord with requirements of local standard.
(3) The green-yellow wire within units are ground wire. Do not use it for other purposes. Nor
should it be cut off or secured by tapping screws. Otherwise, it may cause electric
shock.
(4) Power supply at user side must have reliable ground terminal. Do not connect ground wire
to the following places:

Gree GMV-450WM/B-X Specifications

General

Brand	Gree
Model	GMV-450WM/B-X
Category	Air Conditioner
Language	English