Gree GMV-VQ680WM/C-X Service Manual page 44

Gree
3.2.2.7 Reference Values of Unit Normal Operation Parameters (Commissioning Check)
Reference Values of Commissioning Parameters of the DC Inverter VRF Air-conditioning Unit
No. Commissioning Item
1
2
3
4
5
6
System Outdoor unit
parameters parameters
7
8
9
Parameter
Unit
Name
Outdoor
ambient °C
temperature
Air discharge
pipe
temperature of °C
inverter
compressor 1
Shell top
temperature of
°C
inverter
compressor 1
Air discharge
pipe
temperature of °C
inverter
compressor 2
Shell top
temperature of
°C
inverter
compressor 2
Temperature
of the
defrosting °C
temperature
sensor
High system
°C
pressure
Low system
°C
pressure
Opening of the
heating
electronic PLS
expansion
valve
42
GMV6 HR DC Inverter VRF Units Service Manual
Reference Value
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●When the system compressor starts
running and in normal cooling mode,
the air discharge pipe or shell top
temperature is between 70°C and
95°C, more than 10°C higher than the
saturation temperature corresponding
to the high system pressure; in normal
heating mode, the air discharge pipe or
shell top temperature is between 65°C
and 90°C, more than 10°C higher than
the saturation temperature
corresponding to the high system
pressure.
●When the system operates in cooling
mode, the temperature of the defrosting
temperature sensor is 5°C to 11°C
lower than the high system pressure;
●When the system operates in heating
mode, the difference between the
temperature of the defrosting
temperature sensor and the low system
pressure is about 2°C.
●The normal high system pressure
value is between 20°C and 55°C.
Based on the change of the ambient
temperature and operating capacity of
the system, the high system pressure
value is 10°C to 40°C higher than the
ambient temperature, and the higher
the ambient temperature, the smaller
the temperature difference between the
two is;
●In cooling mode, when the ambient
temperature is between 25°C and
35°C, the high system pressure is
between 44°C and 56°C;
●In heating mode, when the ambient
temperature is between –5°C and
10°C, the high system pressure is
between 40°C and 56°C.
●In cooling mode, when the ambient
temperature is between 25°C and
35°C, the low system pressure is
between 0°C and 8°C;
●In heating mode, when the ambient
temperature is between –5°C and
10°C, the low system pressure is
between –15°C and 5°C.
●In cooling mode, the opening of the
heating electronic expansion valve is
3000PLS;
●In heating mode, the opening of the
electronic expansion valve can be
Remarks
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