51
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
If No, explain: _________________________________________________________________________
Verify the control box timer is programmed properly:
1. Mode is set to “E” Yes No
2. Scale is set to “20-60” Yes No
3. Range is set to “10h” Yes No
4. Dial is set to “34” Yes No
Turn On the control box. Verify and document control box is operating properly: Yes No
If No, explain: _________________________________________________________________________
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. Turn on the power switch to the control box and press the “Vent” button.
2. Open and close the isolation ball valve on the oxygen removal vent to determine the pressure
setting of the backpressure regulator.
3. Pull the knob out from the regulator to adjust pressure setting. Turn the knob clockwise to raise
the pressure, counter-clockwise to lower the pressure.
4. Repeat process until desired pressure setting is achieved.
NOTE: This process can only be performed when fire sprinkler system is at normal operating
pressure.
5. 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
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