Design Disclosure
Material purchasing
Review of onsite installation 
places
Coconnecting Pipe Installation
Outdoor Unit InstallationIndoor Unit Installation
Weld
Purging,pressure maintaining and leak 
detection
Communication 
Cables 
Connection
Power Cord Connection
Power Cord 
Connection
Drain Pipe 
Installation
Heat insulation
Connecting the indoor unit and outdoor 
Pressure maintaining and leak 
detection
       Vacuum pumping
Refrigerant charging
Open the valve
Unit commissioning
As-built Drawing
User manual delivery
Heat insulation
Weld
Pilot run check on indoor unit
Air volume and Nosie check
Connecting the indoor unit and outdoor