Remove Dirt Or Water In The Pipe; Airtight Test; Air Purge With Vacuum Pump; Refrigerant Amount To Be Added - Vivax HPS-22CH65AERI/O1 R32 User Manual

ENG
Max.piping length
Max difference in height when outdoor
unit is upsite
Max difference in height when outdoor unit is
downside
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
Pressured nitrogen [4.3MPa (44kg/cm
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.
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
Refrigerant Amount to be Added
Calculate the added refrigerant according to the
diameter and the length of the liquid side pipe of
the outdoor unit/indoor unit connection.
If the length of the liquid side pipe is less than 15
meters it is no need to add more refrigerant, so
than calculating the added refrigerant the length of
the liquid side pipe must subtract 15 meters
MODELS
2
) for R32] should be used in the airtight testing.
4‐10 kW
30m
20m
15m
CAUTION
MODELS
4 / 6 kW
8 / 10 kW
21
-
VIVAX
4‐10 kW
20g/m
38g/m