Purging air SiBE611027_A
77 Trial Operation and Field Settings
3. Purging air
Air pockets sometimes form in the piping during trial operation after installation or during normal
operation. To remove air pockets from inside the piping, follow the steps below to purge air from
the unit. Be sure to purge air while the unit is in cooling or heating operation.
1. Remove the front panel and the air filter.
2. While pressing the air purge valve with one hand, turn the knob with other hand and open it.
3. Make sure that air has been completely purged, and then close the air purge valve securely.
Caution
There is a risk of injury if you touch the heat exchanger with bare hand.
Be sure to close the air purge valve after purging air.
Leaving the air purge valve open may result in water leakage and decreased performance.
Water leakage occurs if the knob is loose. Check that the knob is tightly closed.
Open the valve
Knob
(R12708)
Air purge
valve
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