
TFP1251
Page 6 of 6
NATIONAL FIRE PROTECTION ASSOCIATION and NFPA are registered trademarks of National Fire Protection Association
1400 Pennbrook Parkway, Lansdale, PA 19446 | Telephone +1-215-362-0700
© 2020 Johnson Controls. All rights reserved. All specifications and other information shown were current as of document revision date and are subject to change without notice.
Care and
Maintenance
The TYCO NG-1 100, NG-1 250, and
NG-1 500 Wall-Mounted Nitrogen Gen-
erators must be maintained and ser-
viced in accordance with this section.
Before closing a fire protection system
main control valve for maintenance
work on the fire protection system that
it controls, permission to shut down
the affected fire protection systems
must first be obtained from the proper
authorities. All personnel who may
be affected by this decision must be
notified.
Inspection, testing, and maintenance
must be performed in accordance
with the requirements of the NFPA,
and any impairment must be immedi-
ately corrected.
The owner is responsible for the inspec-
tion, testing, and maintenance of their
fire protection system and devices in
compliance with this document, as well
as with the applicable standards of any
authorities having jurisdiction. Contact
the installing contractor or product
manufacturer with any questions.
Automatic sprinkler systems are rec-
ommended to be inspected, tested,
and maintained by a qualified Inspec-
tion Service in accordance with local
requirements and/or national codes.
Maintenance of the Nitrogen
Generator
The nitrogen generator cabinet con-
tains three separate cartridge filters.
It is recommended that each of the
filter cartridges be replaced as part of
an annual preventative maintenance
program. In some environments it may
be necessary to replace filters more
frequently. When maintained properly
the nitrogen separation membrane will
provide up to 20 years of service life.
Cartridge Filter Replacement
Procedure
Perform the following steps when
replacing the cartridge filters located
in the filter housing. See Figure 4.
Step 1. Turn the power supply to the
uni t O F F.
Step 2. Close the air supply control
valves on fire sprinkler system’s air
maintenance device(s).
Step 3. Turn the Bypass Valve in the
nitrogen generator to the “FAST FILL”
position.
Step 4. The Nitrogen Generator is
designed to depressurize the inlet
piping through the permeate of the
nitrogen separation membrane when
the nitrogen generator automatically
shuts off.
Step 5. Remove the filter housing
by pulling down on the blue housing
lock and turning the filter housing
counter-clockwise.
Step 6. Once the filter housing has
been removed, the filter cartridge
inside is removed by first unscrewing
the black retaining disc at the base of
the cartridge and then pulling down on
the cartridge. Discard the old filter car-
tridge and replace it with the appropri-
ately marked filter cartridge from the
filter replacement kit by pushing up
so that it fits snugly onto the receiving
cylinder in the upper part of the filter
housing. Hand tighten the black retain-
ing disc back onto the central metal
threaded rod.
Step 7. Replace the filter housing by
pushing up into position and turning
housing clockwise until blue housing
lock locks into place.
Step 8. Repeat Step 5 through Step 7
for each additional filter.
Note: Filters 2 & 3 do not have a black
retaining disc, filters screw directly into
housing.
The Water Separator is found only in
the NG-1 500 Wall-Mounted Nitrogen
Generator. If replacing the Filter Car-
tridges in the NG-1 500 Wall-Mounted
Nitrogen Generator, continue on to
Step 9. Otherwise, proceed to Step 13
for the NG-1 100 and NG-1 250 Wall-
Mounted Nitrogen Generators.
Step 9. Disconnect the Water Separa-
tor drain tube from the bottom of the
separator bowl by pushing up on the
push fitting.
Step 10. Unscrew the separator bowl
and then pull out the separator element
for inspection and cleaning.
Step 11. Replace the separator element
and screw the separator bowl back into
place.
Step 12. Reconnect the Water Separa-
tor drain tube back into the push fitting
at the bottom of the separator bowl.
Step 13. Close the depressurization
ball valve. The Nitrogen Generator can
now be placed back into service.
Step 14. Turn the power supply to the
unit ON.
Step 15. Open the air supply control
valve on fire sprinkler system’s air
maintenance device(s).
Step 16. Turn the Bypass Valve in the
nitrogen generator to the “NITROGEN
GENERATION” position.
Limited
Warranty
For warranty terms and conditions, visit
www.tyco-fire.com.
Ordering
Procedure
Based on information provided by
the customer, TYCO will supply a list
of required part numbers to order
through regular sales channels. To
properly select a Nitrogen Generator,
contact your local business manager or
sales person and specify the following
information:
Sizing of Nitrogen Generator
• Total cumulative size of all dry/preac-
tion sprinkler systems
• Size of the largest single dry/preac-
tion sprinkler system
• Total number of dry/preaction sprin-
kler systems
• Supervisory pressure of all dry/pre-
action sprinkler systems
Select a Vent (Required)
Model TAV-D Dry Air Vent ............TAVD01
Model TSV-D SMART Dry Air Vent
120 VAC/60Hz . . . . . . . . . . . . . . . . . . . . TSVD01
230 VAC/50Hz . . . . . . . . . . . . . . . . . . . TSVD01E
Filter Replacement Kit
Filter Replacement Kit . . . . . . . . . . . .TNGFLTW
Optional Monitoring Equipment
Model THGA Handheld
Gas Analyzer . . . . . . . . . . . . . . . . . . . . . THGA01
Model TSGA SMART
Gas Analyzer ..................... TSGA01
Model TILD In-Line Corrosion
Detector
Refer to Technical Data Sheet TFP1261 for
ordering instructions.