Reliable N2-Blast PrePaK DDX-LP Instructions For Installation, Operation Care And Maintenance

Reliable N2-Blast PrePaK DDX-LP Instructions For Installation, Operation Care And Maintenance

Low pressure dry pipe system

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Instructions for
Installation, Operation,
Care and Maintenance
Note: N2-Blast
and Blast-off
®
Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523
are registered trademarks of South-Tek Systems, LLC.
®
Model DDX-LP N2-Blast
Low Pressure Dry Pipe System
2" (50mm), 2-1/2" (65mm),
3" (80mm), 4"(100mm)
Low Pressure Dry Pipe System
8 psi - 24 psi (0.6 bar - 1.7 bar)
System Air/Nitrogen Pressure
General Description
The Reliable Model DDX-LP PrePaK system with integrated
nitrogen generation (Sizes 2" (50mm), 2½" (65 mm), 3" (80
mm) and 4" (100 mm)) is a completely self-contained, super-
vised dry pipe system that can be readily installed within a floor
space of less than 7 ft
(0.65 m
2
dimensions. Installation of the DDX-LP PrePaK system requires
just three piping connections: the water supply, the sprinkler
system and the drain. Reference locations of these piping con-
nections are shown in Fig. 1. Independent electrical supplies
are required for the optional system air compressor (115 or 220
VAC) and the nitrogen generator (115 VAC).
Full assembly drawings for the units are available on the Reli-
able Automatic Sprinkler Company website (www.reliablesprin-
kler.com).
The Reliable Model DDX-LP N2-Blast
porates a South-Tek Systems FPS-900 pressure swing adsorp-
tion N2-Blast
®
nitrogen generator, complete with independent
air compressor, nitrogen storage tank, and control system. The
nitrogen generator is completely wired, tested, and integrated
with the Model DDX-LP PrePaK system, and supplies 98% pure
nitrogen to the piping network to limit electrochemical, galvanic,
and micro-biologically influenced corrosion (MIC). Operation
and maintenance information can be found in this bulletin as
well as the South-Tek Systems website (www.southteksystems.
com).
The heart of the Reliable Model DDX-LP PrePaK system is
the Model DDX-LP Dry Pipe Valve. The Reliable Model DDX-
LP Dry Pipe Valve is a hydraulically operated, mechanical valve
designed for use as a primary control valve in a low pressure
dry pipe valve system. The trim set used with the Model DDX-
LP Dry Pipe Valve contains the Reliable Model LP Dry Pilot Ac-
tuator releasing device. This Actuator allows the system air or
nitrogen pressure to be considerably less than the water supply
pressure (see Table A). The following benefits are a direct result
of lower air pressure:
1. In refrigerated area systems, lower air pressure decreases
the possibility of ice plugs that could impede or prevent
the flow of water to fire sprinkler heads in the event of fire.
Bulletin 737 January 2021
PrePaK™
®
). Refer to Fig. 1 for cabinet
2
PrePaK system incor-
®

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Summary of Contents for Reliable N2-Blast PrePaK DDX-LP

  • Page 1 Note: N2-Blast and Blast-off are registered trademarks of South-Tek Systems, LLC. ® ® Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523...
  • Page 2: Technical Data

    “Installation Guidelines for Refrigerated Storage” may need to Technical Data be incorporated. 1. The Reliable Model DDX-LP PrePaK system is rated for a minimum water supply pressure of 20 psi (1.4 bar). Optional Seismic Kit The 2”, 2-1/2”, 3”, and 8” sizes are rated for a maximum Reliable part number 6501200041 (25”...
  • Page 3 Fig. 1...
  • Page 4: System Electrical Requirements

    System Electrical Requirements the system, closing them when flow of water has stopped. All 24 VDC electrical connections in the Reliable Model DDX- 5. Open the Manual Emergency Release valve. Note: The LP PrePaK system are translated to a water tight terminal box above steps accomplish the relieving of pressure in the mounted on the inside of the enclosure.
  • Page 5 Prior to opening valve P, be sure that the Model B1 Ac- 9. Secure the Model B Manual Emergency Station in the celerator has been successfully reset per Reliable Tech- OFF position with a nylon tie (included with the assembly) nical Bulletin 323.
  • Page 6 Model DDX-LP Low Pressure Dry Pipe System Valve Legend (Note: Some items omitted for clarity) Fig. 2...
  • Page 7 Fig. 3...
  • Page 8 Fig. 4 Draining Excess/Condensate Water From System 1. Close the main valve controlling water supply to the Model DDX-LP system. 2. Close the pushrod chamber supply valve, and open the main drain valve. 3. Slightly open the condensate drain valve until all water has drained, then close.
  • Page 9: Safety Guidelines

    South-Tek Systems N2-Blast FPS-900-RS. ® in safe working conditions. South-Tek Systems and Reliable are not responsible for dam- • Always use approved parts when performing mainte- ages when using this in manners not approved by South-Tek nance and repairs. Make sure that replacement parts Systems and Reliable.
  • Page 10: Operation

    ® request. • Nitrogen Purity 98.5+% Site Specifications • Integrated Installation in Reliable PrePaK system • Display Hours/Power on/Operating Unless designed otherwise, install in a nonhazardous in- • Storage Pressure 60-70 PSIG (±5%) door location with temperatures between 40-100°F (4°- 38°C).
  • Page 11: Alarm Mode

    Normal Run/Standby Mode (run/StdbY) tem pressure is detected below the normal functioning limits “Run” mode is when the FPS-900-RS is producing ni- of the nitrogen generator. This may be from an issue with trogen and supplying it to the storage tank. The system will the generator, a supply valve being shut off, or caused by a automatically enter “Standby”...
  • Page 12: Key Contacts

    Air Intake Filter 1. Power Issues The integrated air compressor, of the N2-Blast FPS-900- If the N2-Blast FPS-900-RS does not have power, the produc- ® ® RS, has an air intake pre-filter. It prevents particles from entering tion and storage of nitrogen will become apparent once the stor- the compressor housing and damaging internal components.
  • Page 13 Fig. 5 - Nitrogen Generator Filter Locations...
  • Page 14 6501200042 (30” x 33” cabinet for 6” and 8” systems, and all units with nitrogen generator) are seismic upgrade kits required to make the Reliable PrePaK OSHPD compliant. One kit is required for each PrePaK (reference Caution Sheet 331).

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