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Gree MULTIPRO GMV-V WL/C-T Series Quick Start Manual page 12

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NITROGEN PRESSURE TEST
Once piping is complete, pressure test the system through both service valves
Start at 150 psi and hold for 3 minutes
Increase to 325 and hold for 5 minutes
Increase to 500 and hold for 1 hour
EVACUATION
Use a Micron Gauge
Connect to Liquid and Gas
Triple Evacuation is recommended
Ensures dry system
Often quicker
Pull down to 4000 microns
Hold for 15 minutes
Break with 3 psi of Dry Nitrogen
Hold for 20 minutes
Pull down to 1500 microns
Hold for 20 minutes
Break with 3 psi of Dry Nitrogen
Hold for 20 minutes
Pull down to 500 microns
Hold for 1 hour
Does not rise above 1000 microns
GR EE M ULTIPRO QUICK STA RT GUID E
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