Ras-(2-3)Hvrc3 Vacuum Pumping Example - Hitachi UTOPIA R32 Series Installation And Operation Manual

9.3 RAS-(2-3)HVRC3 vacuum pumping example

Outdoor unit
Gas line
Liquid line
Multi-Kit
Indoor unit thermal insulation finishing.
Wind a tape from outside of thermal insulation of gas piping and liquid piping.
PMEN0654 rev.0 - 12/2023
Manifold
gauge
Gas line stop valve
Liquid line stop valve
Cover the flare nut and union of the piping
connection securely with thermal insulation
Nitrogen tank
(for air tight test and
nitrogen blow during brazing)
Vacuum pump
Indoor unit
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