Shenzhen Envicool Technology Co., Ltd.
1. The low-temperature components are filled with part of the refrigerant at the factory, and the
ball valve should be covered with a damp cloth when welding.
2. The cryogenic component is equipped with a liquid storage tank, and the liquid level of the
sight glass should be checked when filling the refrigerant, and the liquid level can reach half of
the sight glass. If the outdoor temperature is relatively low, the heat exchanger of the outdoor
unit can be blocked, and the condensing pressure will be high, and then filled with refrigerant
so that the refrigerant reaches half of the sight glass of the reservoir. If the amount of
refrigerant charged is inappropriate, the system will not operate normally.
2.4 System installation diagram
For the unit installation mode, please refer to Fig.2-35~ Fig.2-38.
1. When the outdoor unit without pump cabinet is higher than the indoor unit, pay
attention to install reverse bends on the gas side pipe and liquid side pipe of the
outdoor unit condenser to avoid the backflow of liquid refrigerant during shutdown.
When installing reverse bends, you must Ensure that the top elbow of the reverse bend
is higher than the highest row of copper pipes in the condenser.
2. When the outdoor unit is higher than the indoor unit, if the outdoor unit is installed 6m
higher than the indoor unit, oil return bends (oil traps) should be installed on the air
side pipe every 6m to ensure the vertical height when the compressor is restarted after
stopping Compressor oil returning from the upper gas side pipe to the return bend can
be quickly taken away.
3. For units with pump cabinets, V-coil units with external units, or units with long piping,
the gas measuring pipe must be equipped with a one-way valve; if the air-conditioning
equipment is dual-circuit power supply or long piping, the liquid side pipe The
solenoid valve must be configured and installed. The one-way valve is installed near
the air inlet of the condenser of the outdoor unit, and the solenoid valve is installed
near the liquid pipe of the indoor unit of the equipment for easy wiring. The solenoid
valve coil needs to be waterproofed. The installation position is shown in Figure 2-18.
4. Due to space constraints, some units of inter-row air conditioners cannot install solenoid
valves at the liquid pipes in the equipment, and need to be installed on the engineering
pipelines. The installation direction of the solenoid valve should be consistent with
the flow direction of the refrigerant. If you encounter installation problems, please
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