Gree Ultra Heat GMV-VQ72W/A-F, Руководство по обслуживанию

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Ultra Heat GMV VRF Technical Service Manual_Heat Recovery Serial UNIT INTRODUCTION
10
37 One-way valve
Avoid impurities getting into the electric parts. Meanwhile, absorb the water inside
the liquid status to prevent ice blockage.
38 Liquid valve
Stop valve, closed when the unit is delivered from the factory and will be opened
after installation.
39 Low pressure gas pipe valve
Stop valve, closed when the unit is delivered from the factory and will be opened
after installation.
40 High pressure gas pipe valve
Stop valve, closed when the unit is delivered from the factory and will be opened
after installation.
41
Low-pressure measurement
valve
Detects the low pressure value or charges refrigerant during system running.
42 Gas-bypass valve Make sure pressure of the system is balanced.
43 Pressure-balanced valve Ensures success startup of compressor.
44 Varying capacity valve 1 To make the compressor turn with double cylinders.
45 Varying capacity valve 2 To make the compressor turn with triple cylinders.
46 Oil-balanced valve 1 Make sure oil of the system is balanced.
47 Oil-balanced valve 2 Make sure oil of the modules is balanced.
48 Oil return valve Oil return control for the compressor.
49 One-way valve
Prevents high-pressure gas from entering the compressor and fast balances the
suction pressure and discharge pressure in a compressor.
50 Four-way valve 2 Used for the switching between the cooling and heating functions of system IDU.
51 One-way valve Controls refrigerant flow direction.
2.2 Piping Design of C&H Mode Exchanger
2.2.1 Piping diagram
NCHS1B(U):