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NOTE: The only time the nitrogen generator should need to be in the “air bypass” position is
for the NFPA 13 30-minute system fill time requirement.
7. Turn the cabinet power switch ON (if not already on). The generator will prompt to complete
the commissioning process through the HMI. See section 5.a., in the Commissioning Section for
procedure.
System Filling Procedure
The sprinkler system(s) is (are) filled using the air from the air compressor connected to the nitrogen
generator to meet the NFPA 13 30-minute fill requirement.
1. Close the nitrogen generator’s air inlet isolation ball valve and the nitrogen outlet isolation ball
valve.
2. Open the nitrogen generator’s air bypass isolation ball valve.
NOTE: Bypass indication on HMI screen will be displayed.
3. Open the fast fill valve and close the regulated valve of the appropriate air maintenance device
(AMD) necessary to fill the sprinkler system(s).
4. Close the fast fill and regulated AMD valves on any system not being filled.
5. Air compressor will start running.
6. Once the sprinkler system(s) obtain the desired pressure:
a. Open the nitrogen generator’s air inlet isolation ball valve and the nitrogen outlet isolation
valve.
b. Close the nitrogen generator’s air bypass isolation ball valve.
NOTE: Bypass Alarm indication on HMI screen will be extinguished.
c. Close the appropriate AMD fast fill valve and open the AMD regulated valve.
d. Open AMD regulated valves that were previously closed on any systems not being filled.
7. Initiate the fourteen (14) day nitrogen inerting process (See Nitrogen Inerting Process in this
section).
8. Once the nitrogen inerting process is completed, the nitrogen generator will continue to
automatically operate when any of the associated sprinkler systems require nitrogen.
Nitrogen Inerting Process
1. Standard Vents
a. Open the ball valve on the Standard Vent to initiate the fourteen (14) day nitrogen
inerting process.
b. Close the ball valve on the Standard Vent at the completion of the fourteen (14) day
nitrogen inerting process.
2. SMART Vents
a. Press the Vent button on the SMART Vent Controller which energizes the solenoid on the
SMART Vent to initiate the fourteen (14) day nitrogen inerting process.
b. At the completion of the fourteen (14) day nitrogen inerting process the SMART Vent
Controller will automatically close the vent by de-energizing the solenoid.
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