Gree GMV6 DC Inverter VRF Units Service Manual
3.2.7 Reference Values of Unit Normal Operation Parameters
(Commissioning Check)
Debugging Parameter Reference Value for DC Inverter VRF Unit
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 operating in the heating
mode at the ambient temperature of -
5~10
℃
(
23~50
℉
)
, the system high
pressure value is 40~56
℃
(
104~132.8
℉
)
;
—