Gree GMV5 Service Manual

GREE Photovoltaic Direct-driven Inverter Multi VRF Units
139
2.4 References for Proper Unit Operation Parameters
SN Commissioning Item Parameter Name Unit Reference Value
1
System
parameter
Outdoor unit
parameter
Outdoor environment
temperature
°C/
℉
——
2
Discharge pipe
temperature of
compressor
°C/
℉
●When the system compressor is running, the normal discharge
pipe or top temperature for cooling is 70
-95°C(167-203
℉
),
which is more than 10°C(18
℉
) higher than the saturation
temperature corresponding to the system high
-pressure. The
normal temperature for heating is 65
-80°C(149-176
℉
), which is
more t
han 10°C(18
℉
) higher than the saturation temperature
corresponding to the system high-pressure.
3
Defrosting temperature
°C/
℉
●When the system runs for cooling, the defrosting temperature
is 5
-11°C(41-52
℉
) lower than the system high-pressure value.
●When the system runs for heating, the defrosting temperature
is 2°C(3.6
℉
) higher or lower than the system low-pressure
value.
4
System high
-pressure
°C/
℉
●The normal system high
-pressure value is 20-55°C(68-131
℉
).
With the change of environment temperature
and system
operation capacity, the system high
-pressure value is
10
-40°C(50-104
℉
) higher than the environment temperature.
The higher the environment temperature, the less the
temperature difference.
●When the system runs for cooling with the environment
temperature being 25
-35°C(77-95
℉
), the system high-
pressure
value is 44
-53°C(111-127
℉
).
●When the system runs for heating with the environment
temperature being
-5 - 10°C(23-50
℉
), the system low-
pressure
value is 40
-52°C(104-125
℉
).
5
System low
-pressure
°C/
℉
●When the system runs for cooling with the environment
temperature being 25
-35°C(77-95
℉
), the system low-pressure
value is 0
-8°C(32-46
℉
).
●When the system runs for heating with the environment
temperature being
-5 - 10°C(23-50
℉
), the system low-press
ure
value is
-15 - 5°C(5-41
℉
).
6
Opening degree of
heating electronic
expansion valves
PLS
●During the cooling operation, the heating electronic expansion
valves always remain at 480 PLS.
●During the heating operation, the adjustable electronic
expansion valves change between 120 and 480 PLS.
7
Current of inverter
compressor
A
●According to different operation frequencies and loads, the
current of inverter compressor 1 changes between 7 and 25 A.
The current of inverter compressor
2 changes between 7
and 20
A.
8
IPM module temperature
of inverter compressor
°C/
℉
●When the environment temperature is lower than 35°C, the
temperature of the IPM module is lower than 80°C. The highest
temperature is not higher than 95°C.
9
Indoor unit
parameter
Environ
ment
temperature of IDU
°C/
℉
——
10
Inlet
-
tube temperature of
indoor heat exchanger
°C/
℉
●As the environment temperature is different, the inlet-tube
temperature is 1
-7°C(1.8-12.6
℉
) lower than the outlet-tube
temperature of the same IDU in cooling mode.
●The inlet
-tube temperature is 10-20°C(18-36
℉
) lower than the
outlet-tube temperature of the same IDU in heating mode.
11
Outlet
-tube temperature
of indoor heat exchanger
°C/
℉
12
Opening degree of
indoor electronic
expansion valves
PLS
The opening d
egree automatically changes between 0 and
2000 PLS or between 0 and 480 PLS.
13
Communi
cation
parameter
Communication data
—
●The commissioning software shows that the number of
IDUs/ODUs is consistent with the actual engineering quantity,
without communication failure.

Gree GMV5 Specifications

General

Brand	Gree
Model	GMV5
Category	Inverter
Language	English