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Leak check all plumbing throughout the nitrogen generator, include the air supply from the air compressor
and the nitrogen supply to the fire sprinkler systems, repair any leaks found.
Verify and document that the no leaks exist in the nitrogen generator, air compressor
supply line and fire sprinkler supply line: Yes No
Verify and document bypass/nitrogen generation ball valve in the nitrogen generator
is in the nitrogen generation position: Yes No
Oxygen Removal Vents: PAV-D/DQ and PSV-D/DE
Verify and document the appropriate orifices for each venting device are available: Yes No
NOTE: Ensure the appropriate orifice is installed in the appropriate vent for each fire sprinkler system.
The restricted venting orifice size is determined by the sprinkler system capacity (gallons). The
restricted venting orifice ensures the oxygen removal process is completed in all fire sprinkler
systems within the same approximate timeframe and within typically fourteen (14) days.
PAV-D/DQ Standard Vent
Verify and document the model and serial number of each oxygen removal vent installed: Yes No
Determine the pressure setting of the backpressure regulator of oxygen removal vent.
1. The backpressure regulator setting must be below the cut-in or turn-on pressure of the nitrogen
generator and above the low air alarm pressure of the fire sprinkler system.
Verify and document the appropriate orifice in the oxygen removal vent: Yes No
Install the appropriate orifice in the oxygen removal vent.
Adjust the backpressure regulator setting on the oxygen removal vent:
1. Open and close the isolation ball valve on the oxygen removal vent to determine the pressure
setting of the backpressure regulator.
2. Pull the knob out from the regulator to adjust pressure setting. Turn the knob clockwise to raise
the pressure, counterclockwise to lower the pressure.
3. Repeat process until desired pressure setting is achieved.
NOTE: This process can only be performed when fire sprinkler system is at normal operating
pressure.
4. Once the desired pressure has been obtained on the backpressure regulator, push the knob on
the regulator until it clicks into place.
Verify and document the backpressure regulator set point: ___________
Verify and document isolation ball valve left in open position: Yes No
PSV-D/DE SMART Vent
Verify and document model and serial number of each oxygen removal vent installed: Yes No
Verify and document serial number of each oxygen removal vent control box installed: Yes No
Verify and document that the control box is properly installed: Yes No
If No, explain: _________________________________________________________________________
Verify and document wiring between the control box and the vent is properly installed: Yes No
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