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G E N E R A L D E S C R I P T I O N
The Model ZN-RES Residential Flush Pendent Sprinklers are automatic sprinklers of the compressed fusible solder type.
They are decorative, low profile, flush mount sprinklers. The Frame and Cover of the sprinkler hide the Deflector and Valve
Cap assemblies. (Reference Figure 1) The Model ZN-RES is designed for use in residential occupancies such as homes,
apartments, dormitories, and hotels. When aesthetics is the major consideration, the Model ZN-RES should be your first
choice.
They are to be used in wet pipe residential sprinkler systems for one- and two-family dwellings and manufactured homes
per NFPA 13D; wet pipe residential sprinkler systems for residential occupancies up to and including four stories in height
per NFPA 13R; or, wet pipe sprinkler systems for the residential portions of any occupancy per NFPA 13.
The Model ZN-RES has a 4.2 (60.5 LPM / bar
pressures, enabling smaller pipe sizes and water supply requirements.
The flush design of the Model ZN-RES features a separable escutcheon providing 3/8 inch (9.5 mm) vertical adjustment.
This adjustment reduces the accuracy to which the fixed pipe drops to the sprinklers must be cut to help assure a perfect
fit installation.
The Model ZN-RES has been designed with heat sensitivity and water distribution characteristics proven to help in the
control of residential fires to improve the chance for occupants to escape or be evacuated. However, residential fire
sprinkler systems are not a substitute for intelligent fire safety awareness or fire safety construction required by building
codes.
WA R N I N G S
The Model ZN-RES Residential Flush Pendent Sprinklers described herein must be installed and maintained in
compliance with this document, as well as with the applicable standards of the National Fire Protection Association,
in addition to the standards of any authorities having jurisdiction. Failure to do so may impair the integrity of these
devices.
www.senjusprinkler.com
Model ZN-RES
K-Factor: 4.2
Residential Flush Pendant Sprinkler
(PTFE gasketed orifice seal design)
) K-factor which provides very low design flow rates at reduced residual
1/2
Page 1 of 8
SIN: SS4421
•
Document No. U028837 • 01-26-2022
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Related Manuals for Senju Sprinkler ZN-RES
Summary of Contents for Senju Sprinkler ZN-RES
- Page 1 They are decorative, low profile, flush mount sprinklers. The Frame and Cover of the sprinkler hide the Deflector and Valve Cap assemblies. (Reference Figure 1) The Model ZN-RES is designed for use in residential occupancies such as homes, apartments, dormitories, and hotels. When aesthetics is the major consideration, the Model ZN-RES should be your first choice.
- Page 2 ⑧ Valve Cap: Copper Alloy Painted, Dark Brown Painted, Chrome Plated • Physical Characteristics: Dezincification resistant Figure 1: Model ZN-RES K = 4.2 Copper Alloy body and PTFE gasketed orifice seal design. Residential Flush Pendent Sprinkler O P E R AT I O N The Sprinkler assembly contains a small fusible solder element.
- Page 3 Use only the escutcheon provided with the Model ZN-RES. The sprinkler must be secured in position by firmly fastening the sprinkler system piping to the structure. If the sprinkler is not properly secured in position, reaction forces resulting from sprinkler operation could alter its orientation and its water distribution pattern.
- Page 4 Precautionary Warnings for Corrosive Environments The Model ZN-RES sprinklers should not be installed where they may be subjected to a corrosive environment including the following: 1. Chlorine ion and Chloride environment Stress corrosion cracking may be caused by exposure to environments with Chlorine ion and Chloride. Exposure to this environment may result in sprinklers operating under non-fire conditions or not operating when exposed to an actual fire.
- Page 5 Use only VC-H model wrench socket for installation of ZN-RES sprinklers. Use of any other wrench or socket is prohibited and may cause damage to the sprinkler.
- Page 6 Center Mark Do Not Make a Over-Tighten Space Here Min. 1/8″ (3 mm) Tolerance Limit of Ceiling Level Mounting Surface Mounting Surface 2″ Ceiling Hole Diameter Figure 3: Installation Step 4: Wrench tighten the Sprinkler using only the Socket VC-H or Ratchet (3/8″ drive) & Socket VC-H Combination (Ref. Wrenching Area Figure 4).
- Page 7 / slippage, or the like, must be replaced. The model ZN-RES must only be replaced with pendent sprinklers which are listed for residential fire protection service and which have the same nominal K-factor, the same coverage area, and the same or lower flow ratings (as indicated under “Hydraulic Design Criteria”).
- Page 8 • Finishes: White Painted, Black Painted, Dark Brown Painted, Chrome Plated Escutcheon • Escutcheon for ZN-RES Flush Pendent Series, O.D. 3 inch (φ75mm), Order Separately from Sprinkler • Finishes: White Painted, Black Painted, Dark Brown Painted, Chrome Plated Tools & Accessories •...
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