Gree GMVVQ224WM/C-X - Page 70

GMV Heat Recovery DC Inverter VRF
66
Debugging Parameter Reference Value for GMV Heat Recovery DC Inverter VRF Unit
No.
Debugging item
Parameter name
Unit
Reference value
Remark
7
System
parameter
System
parameter
Outdoor
unit’s
parameter
System high pressure
℃
●
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
℃
;
—
8 System low pressure
℃
●
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
℃
.
—
9
Opening of electronic
expansion valve of
heating
PLS
●
During cooling operation, the electronic
expansion valve of heating is 3000PLS;
●
During heating operation, the adjustable
range of the opening of electric expansion
valve opening is 720~3000PLS.
—
10
Operation frequency of
inverter compressor
Hz
●
Change among 20Hz~140Hz
—
11
IPM module
temperature of inverter
compressor
℃
●
IPM module temperature is lower than
80
℃
. The highest temperature doesn’t
exceed 95
℃
.
—
12
Drive bus voltage of
inverter compressor
V
●
The normal bus voltage is 1.414 times
of the power supply voltage. For example,
if the three-phase power supply voltage is
390V, then the rectified bus voltage is:
390V
×
1.414 = 551V. The normal
deviation between the measured value
and
the calculated value within 15V.
—
13
Fan operation
frequency
Hz
●
Adjust the operation in the range of
0~85Hz according to the system pressure
adjustment.
—
14
Indoor
unit’s
parameter
Inlet tube temperature
of indoor heat
exchanger
℃
●
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.
—
15
Outlet tube temperature
of indoor heat
exchanger
℃ —