Gree GMVVQ224WM/C-X Owner's Manual page 70

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
GMV Heat Recovery DC Inverter VRF
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;
● During heating operation, the adjustable
PLS
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 0~85Hz 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 10℃~20℃
℃
lower than the outlet temperature for the
same indoor unit under the heating mode.
66
Remark
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