Delta 81HM003J24, Инструкция по эксплуатации

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14
7. Filling of Refrigerant and Test Run
7.1 Filling of Refrigerant
1). Before shipped out from manufacturer, the outdoor unit has been filled with refrigerant.
Additional refrigerant may be filled when carrying out site connection of pipelines.
2). Check the liquid valve and the gas valve of the outdoor unit. The valves shall be completely
shut off.
3). Connect a vacuum pump to the liquid valve and the gas valve of the outdoor unit to remove
air from the inside of the indoor unit and the connecting pipe. Refer to the following figure:
"LO"Knob
"HI"Knob
Vacuuming pump
Manometer Manometer
Connection hose
Gas valve
Liquid valve
4). After confirming that there is no leakage from the system, when the compressor is not in
operation charge additional R410A working fluid with specified amount to the unit through
the filling opening of the liquid pipe valve of the outdoor unit.
7.2 Calculating Mass of Additional Refrigerant
7.2.1 Mass of Refrigerant in the System When Delivered from Manufacturer
Note:
The mass of refrigerant in the system when delivered from manufacturer does not include the
mass of additional refrigerant needed by the piping connecting the outdoor unit and the indoor unit.
Model
Refrigerant charge (kg) 7.0 7.0 7.0 7.0
As the length of the connecting pipe is decided on site, the amount of additional refrigerant
shall be decided depending on the size and the length of the liquid pipe used on site.
7.2.2 Method of Calculating Mass of Additional Refrigerant to Be Filled (Based on the
Liquid Pipe)
Mass of Additional Refrigerant to Be Filled =∑ Length of Liquid Pipe × Amount of Additional
Refrigerant to Be Filled Per Meter of Liquid Pipe
81HM003J24 81HM004J24
81HM004J24
81HM005J24