1144440 Potter VSR-S Waterflow Alarm Switch for Small Pipe

Features

• Assembled in USA
• 0-90 second field replaceable time delay retard
• Easy to read retard time delay adjustment knob
• Fits 1” to 2” CPVC, copper, brass, or iron pipe
• Comes with all necessary paddles
• Two SPDT (form C) contacts
• Weatherproof
• Easy to read wire terminal designations
• 5 year warranty

Description

The Model VSR-S is a vane type waterflow switch for use on wet sprinkler systems that use 1” (25mm), 1¼” (32mm), 1½” (38mm) or 2” (50mm) pipe size. The unit may also be used as a sectional waterflow detector on large systems.

The unit contains two single pole double throw snap action switches and an adjustable, instantly recycling pneumatic retard. The switches are actuated when a flow of 10 gallons per minute (38 LPM) or more occurs downstream of the device. The flow condition must exist for a period of time necessary to overcome the selected retard period.

Enclosure

The VSR-S switches and retard device are enclosed in a weather/UV/flame resistant high impact composite plastic. The cover is held in place with two tamper resistant screws which require a special key for removal. A field installable cover tamper switch is available as an option which may be used to indicate unauthorized removal of the cover. See bulletin number 5401103 for installation instructions of this switch.

Technical Specifications

• Service Pressure - 300 PSI (20,68 BAR) - UL
• Flow Required for Alarm
  • 10 GPM (38 LPM)
  • To ensure minimum flow of 10 gpm, a minimum pressure is required at all sprinklers with a k-factor of 3 or less
  • K-3: 10 PSI
  • K-2.8: 12 PSI
• Maximum Surge - 18 FPS (5,5 m/s)
• Enclosure - Cover - Weather/UV/Flame Resistant High Impact Composite Base - Die-cast aluminum
• Contact Ratings
  • Two sets of SPDT (Form C)
  • 10.0 Amps at 125/250VAC
  • 2.0 Amps at 30VDC Resistive
  • 10 mAmps min. at 24VDC
• Conduit Entrances - Two 1/2” conduit connections provided. Individual switch Compartments suitable for dissimilar voltages.
• Usage - Listed plastic, copper, schedule 40 iron pipe and unlisted riser assemblies approved by Potter. Fits pipe sizes - 1”, 1¼”, 1½” and 2”. Note: 12 paddles are furnished with each unit, one for each pipe size of threaded and sweat TEE, one for 1” CPVC, one for 1” CPVC (Central), one for 1” threaded Nibco CPVC, and one for 1½” threaded (Japan)
• Environmental Specifications
  • NEMA 4/IP54 Rated Enclosure suitable for indoor or outdoor use with factory installed gasket when used with appropriate conduit fitting
  • Temperature Range: 40°F - 120°F, (4.5°C - 49°C) - UL
• Service Use - Automatic Sprinkler NFPA-13, One or two family dwelling NFPA-13D, Residential occupancy up to four stories NFPA-13R, National Fire Alarm Code NFPA-72

1144440 Specifications PDF