Page 31 - NG-1 100, NG-1 250, NG-1 500 - Wall-Mounted Nitrogen Generator System Installation Manual

3. The second component of the TYCO SMART Dry Vent is the electric control box. The control box must be installed on a wall or vertical surface adjacent to the vent assembly installation location.
4. Provide conductors from 120VAC/60Hz (230VAC/50Hz) power supply to designated terminals in the electric control box in accordance with the applicable national and/or local codes (i.e. NFPA 70). The device draws less than 2 amps. Contractor must drill hole in the control box to provide access for the 120VAC/60Hz (230VAC/50Hz) power supply conductors.
5. Provide conductors to connect the 120VAC/60Hz (24VDC) coil leads of the electronic solenoid valve on the vent assembly to the designated terminals in the electric control box in accordance with applicable national and/or local codes (i.e. NFPA 70). Contractor must drill hole on side or top of the control box to provide access.
6. The green power switch on the electric control box must remain in the OFF position until the TYCO Nitrogen Generator has been commissioned.
7. Inspection of the vent assembly should be performed after installation and hydrostatic testing of the fire sprinkler system. The inspection should be performed periodically thereafter in accordance with the applicable national codes, NFPA codes and standards, and/or the authority having jurisdiction.
NOTE: Inspection must include verifying the condition of the inline 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, please contact Johnson Controls. The restricted venting orifice must be installed before proceeding with the steps below.
2. Determine the low air alarm pressure and 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.
NOTE: This process can only be performed when the solenoid on the vent is energized (power on and VENT button depressed), and fire sprinkler system is at normal operating pressure.
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 isolation ball valve and allow device to depressurize through restricted venting orifice to pressure setting. Make adjustment to pressure setting using the knob, then open the isolation ball valve to pressurize device and close the isolation ball valve again to check pressure setting. Repeat process until desired pressure setting is achieved.
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