Vivax HPS-120HM155AERI/I1s, User Manual

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ENG
VIVAX
21
Gas side Liquid side
4 ‐ 16 kW outdoor unit Flaring Flaring
Indoor unit Flaring Flaring
MODELS 4 ‐ 16 kW
Max.piping length (H+L1) 30m
Max difference in height (H) 20m
Remove Dirt or Water in the Pipes
1)
Make sure there is no any dirt or water before connectiong the piping to the outdoor
and indoor units.
2)
Wash the pipes with high pressure nitrogen, never use refrigerant of outdoor unit.
Airtight Testing
Charge pressured nitrogen after connecting indoor/outdoor unit pipes to do airtight
testing
Air Purge with Vacuum Pump
1)
Using vacuum pump to do the vacuum, never using refrigerant to expel the air.
2)
Vacuuming should be done from liquid side
2)
Connection method
CAUTION
Pressured nitrogen [4.3MPa (44kg/cm
2
) for R32] should be used in the airtight testing.
Tighten high/low pressure valves before charging pressured nitrogen. Charge pressure
nitrogen from the connector on the pressure valves.
The airtight testing should never use any oxygen, flammable gas or poisonous gas.