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NOTE: Inspection must include the condition of the in-line filter and checking for blockage in the
Y-Strainer and the restricted venting orifice.
Operating Instructions
1. Verify the vent assembly has been equipped with a restricted venting orifice downstream of the
backpressure regulator.
NOTE: If the vent assembly is not equipped with a restricted venting orifice, one will be provided by
ECS during system commissioning. The restricted venting orifice must be installed before
proceeding with the steps below.
2. Determine the low air alarm pressure and the turn-on pressure of the nitrogen generator.
3. Choose a pressure setting for the backpressure regulator that is above the low air alarm pressure but
below the turn-on pressure of the nitrogen generator.
4. 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.
5. Close the ball valve and allow device to depressurize through restricted venting orifice to pressure
setting. Make adjustment to pressure setting using the knob, then open ball valve to pressurize device
and close ball valve again to check pressure setting. Repeat process until desired pressure setting is
achieved.
NOTE: This process can only be performed when fire sprinkler system is at normal operating pressure.
6. Push knob back into regulator until it clicks into place.
7. Once the nitrogen generator system has been commissioned, open the isolation ball valve on the vent
assembly.
8a. Standard Vent Operation:
a. The Vent is now open and actively venting oxygen from the fire sprinkler system. It should
remain open for approximately fourteen (14) days or less, until the system nitrogen
concentration reaches 98% or greater.
b. Close the isolation ball valve. Failure to close the isolation ball valve after fourteen (14) days
or less, once fire sprinkler system nitrogen concentration reaches 98% will result in additional
oxygen corrosion damage to the system and unnecessary run time of the air compressor and
nitrogen generator.
c. Use a Handheld Gas Analyzer to verify the gas concentration inside the fire sprinkler system.
8b. The AdvancedIQ Vent is now open and actively purging oxygen from the fire sprinkler system. It will
remain open for approximately fourteen (14) days. The AdvancedIQ Controller (AVC) will
automatically stop the venting process.
9. If the sprinkler system actuates or another event introduces oxygen to the sprinkler system the
isolation ball valve must be opened again for a period of fourteen (14) days to vent oxygen from the
system.
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