WORK FLOW (EXAMPLE)
Prepare Project Schedule
Refrigerant check
Refrigerant piping work
Drain piping work
Duct work
Insulation work
Electric wiring work
Outdoor unit foundation work
Outdoor unit installation
Address setting
Leak pressure test
Vacuum evacuation and drying
Additional Refrigerant Charge
Gas leakage check
Outside panel installation
Test run and adjustment
Hand over
Customer Training
Refrigerant piping connection (Outdoor unit)
Remote controller installation
Indoor unit installation
Operation chart preparation
● Always check the refrigerant to be used.
● Always use the specified refrigerant.
● Prepare materials / tools matched to the refrigerant.
● Do not purge system with refrigerant.
● Use a vacuum pump with check valve to prevent the
backflow of vacuum pump oil into the refrigerant system.
● Pressurize system with 600 PSI Nitrogen.
● System must hold 600 PSI for a minimum of 24 hours.
● Calculate additional refrigerant charge. Add additional
refrigerant with R410A gage manifold and hose.
● Do not connect to the power source.
● Use copper tube of the specified material and thickness to
meet endurance pressure of the pipe. (609 psi (4.2 MPa))
● Do not use pipe with dust and dirt sticking to it during piping
connection work.
● Always flow dry nitrogen through piping while brazing.
Preparations
Start of work
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SYSTEM
DESIGN
SYSTEM
DESIGN
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