Gree GMV-1015WM/G-U, Service Manual

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Gree GMV6 DC Inverter VRF Units Service Manual
39
3.2.7 Reference Values of Unit Normal Operation Parameters
(Commissioning Check)
Debugging Parameter Reference Value for DC Inverter VRF Unit
No. Debugging item Parameter name Unit Reference value Remark
1
System
parameter
Outdoor
unit’s
parameter
Outdoor ambient
temperature
℃
（
℉
）
— —
2
Discharge pipe
temperature of inverter
compressor 1
℃
（
℉
）
● When the compressor starts running,
the normal discharge pipe of cooling or
shell top temperature is 70~95
℃
（
158~203 ℉
）
, above 10 ℃
（
50 ℉
）
higher than the saturation temperature of
system high pressure; the normal
heating temperature is 65~90
℃
（
149~194
℉
）
, above 10
℃
（
50
℉
）
higher than the saturation temperature of
system high pressure.
—
3
Shell top tube
temperature of inverter
compressor 1
℃
（
℉
）
—
4
Discharge pipe
temperature of inverter
compressor 2
℃
（
℉
）
—
5
Shell top tube
temperature of inverter
compressor 2
℃
（
℉
）
—
6
Temperature of
defrosting temperature
sensor
℃
（
℉
）
● When the system is running in cooling
mode, the temperature of defrosting
temperature sensor is 5~11
℃
（
41~51.8
℉
）
lower than system high pressure;
● When the system is running in heating
mode, the temperature difference
between the defrosting temperature
sensor and the system low pressure is
about 2
℃
（
35.6
℉
）
.
—
7 System high pressure
℃
（
℉
）
● The normal high pressure value of the
system is 20 ℃
（
68 ℉
）
~55 ℃
（
131
℉
）
. 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
℃
（
50 ℉
）
~40 ℃
（
104 ℉
）
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
℃
（
77~95
℉
）
, the system high
pressure value is 44~56 ℃
（
111.2~132.8
℉
）
;
● When the unit op erating in the heating
mode at the ambient temperature of -
5~10
℃
（
23~50 ℉
）
, the system high
pressure value is 40~56 ℃
（
104~132.8
℉
）
;
—