Gree Ultra Heat GMV-V72W/A-F, Service Manual, Page: 13 / 240

Ultra Heat GMV VRF Technical Service Manual UNIT INTRODUCTION
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2 INTERNAL PIPING DESIGN OF THE UNITS
2.1 Piping Diagram of GMV-V72W/A-F(U)
、
GMV-V96W/A-F(U)
2.2 Names and main functions of components
No. Name Main Function
1 Compressor
Adjusts its own rotational speed based on the actual requirement of the
system to implement capacity control.
2 Compressor heat tape
Maintains a proper oil temperature in the compressor when the compressor
is in standby status, ensuring the reliability during compressor startup.
3
Exhaust pipe temperature sensor of
compressor
Detects a compressor's exhaust gas temperature for compressor control
and protection.
4 High-pressure circuit breaker
Protects a compressor by sending feedback signal to stop the system when
the compressor's discharge pressure exceeds the operating value of
high-pressure circuit breaker.
5 Oil extractor Separates the gas and oil in the system to ensure compressor reliability.
6 One-way valve
Prevents high-pressure gas from entering the compressor and fast balances
the suction pressure and discharge pressure in a compressor.
7 High-pressure sensor
Detects the high pressure value in the system in real time mode for
compressor protection and other control functions.
8 Four-way valve 1
Used for the switching between the cooling and heating functions of system
IDU.