Gree GMV-VQ280WM/C-X Owner's Manual page 71

GMV Heat Recovery DC Inverter VRF
Debugging Parameter Reference Value for GMV Heat Recovery DC Inverter VRF Unit
No. Debugging item
7
8
Outdoor
unit's
parameter
System
parameter
System
9
parameter
10
11
12
13
14
Indoor
unit's
parameter
15
Parameter name
System high pressure
System low pressure
Opening of electronic
expansion valve of
heating
Operation frequency of
inverter compressor
IPM module
temperature of inverter
compressor
Drive bus voltage of
inverter compressor
Fan operation
frequency
Inlet tube temperature
of indoor heat
exchanger
Outlet tube temperature
of indoor heat
exchanger
Unit Reference value
● The normal high pressure value of the
system is 20℃~55℃. According to the
change of ambient temperature and the
change of operating capacity of the system,
the high pressure value of the system is
10℃~40℃ higher than the ambient
temperature. The higher the ambient
temperature, the smaller the temperature
difference;
℃
● When the unit operating in the cooling
mode at the ambient temperature of
25~35℃, the system high pressure value is
44~56℃;
● When the unit operating in the heating
mode at the ambient temperature of
-5~10℃, the system high pressure value is
40~56℃;
● When the unit operating in the cooling
mode at the ambient temperature of
25~35℃, the system low pressure value is
0~8℃;
℃
● When the unit operating in the heating
mode at the ambient temperature of
-5~10℃, the system low pressure value is
-15~5℃.
● During cooling operation, the electronic
expansion valve of heating is 3000PLS;
PLS ● During heating operation, the adjustable
range of the opening of electric expansion
valve opening is 720~3000PLS.
Hz ● Change among 20Hz~140Hz
● IPM module temperature is lower than
80℃. The highest temperature doesn't
℃
exceed 95℃.
● The normal bus voltage is 1.414 times of
the power supply voltage. For example, if
the three-phase power supply voltage is
V 390V, then the rectified bus voltage is:
390V × 1.414 = 551V. The normal deviation
between the measured value and the
calculated value within 15V.
● Adjust the operation in the range of
Hz 0~90Hz according to the system pressure
adjustment.
● According to the ambient temperature,
the inlet temperature is 1℃~7℃ lower than
℃
the outlet temperature for the same indoor
unit under cooling mode.
●The inlet temperature is 1℃~7℃ lower
℃
than the outlet temperature for the same
indoor unit under the heating mode.
67
Remark
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