Page 30 - NG-1 100, NG-1 250, NG-1 500 - Wall-Mounted Nitrogen Generator System Installation Manual
P. 30

    Model Number: Service Pressure:
System Connection: Temperature Range: Dimensions:
Vent Assembly:
Up to 175 PSIG (12 Bar)
1 in. NPT Male
40°F to 120°F (4.5°C to 49°C)
The TYCO SMART Dry Vent provides automatic oxygen venting in dry pipe and preaction fire sprinkler systems. The restricted venting orifice allows oxygen to be vented from the fire sprinkler system at a controlled rate to achieve a minimum nitrogen concentration of 98%. The TYCO SMART Dry Vent is equipped with a levered float valve that allows gas to discharge but prevents liquid water from leaking through the restricted venting orifice in the event water enters the fire sprinkler system. A backpressure regulator is also included to prevent total system depressurization from the vent assembly. A special fitting is provided to receive 5/32” tubing when the vent is used in conjunction with the TYCO SMART Gas Analyzer.
The TYCO SMART Dry Vent is equipped with an electronic solenoid valve that must be wired to the electric control box (conductors not included). The control box will automatically close the vent once the desired nitrogen concentration has been reached. The control box is equipped with an on/off switch and a vent button to provide a means to restart of the venting process should oxygen be reintroduced into the fire sprinkler system.
Installation Instructions
1. The TYCO SMART Dry Vent includes two (2) separate components. The first component is the vent assembly equipped with a ball valve to be connected to the fire sprinkler riser. The contractor must install a 1” outlet (welded or mechanical) to connect the vent assembly to the sprinkler system on the system side of the main control valve. The isolation ball valve must remain in the closed position until the TYCO Nitrogen Generator System has been commissioned.
NOTE: The vent assembly does not require a support hanger.
2. Install the vent assembly in a level position. Recommended mounting height is 5’-10’ (1.5-3m) above
the finished floor, but a minimum of 2’ (.6m) above the dry pipe or preaction valve.
NOTE: Piping to the vent assembly cannot be installed in a configuration that would trap water and prevent drainage to the sprinkler system; a water trap impedes the ability of the vent assembly to vent oxygen from the fire sprinkler system.
 For use under U.S. Patents 8,720,591, 9,144,700, 9,186,533 and 9,610,466
General Description
Control Box:
Support Hanger Not Required
Page 29 of 80
12.0 in. (W) x 4.65 in. (D) x 11.2 in. (H) (305 mm (W) x 118 mm (D) x 285 mm (H)) 9.0 in. (W) X 7.0 in. (D) X 10.0 in. (H)
(229 mm (W) X 178 mm (D) X 254 mm (H))

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