Potter VSR-S Mode D'emploi

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
CAUTION
Waterflow switches that are monitoring wet pipe sprinkler systems
shall not be used as the sole initiating device to discharge AFFF,
deluge, or chemical suppression systems. Waterflow switches used
for this application may result in unintended discharges caused by
surges, trapped air, or short retard times.
Important: This document contains important information on the installation and operation of the VSR-S waterflow switches. Please read all instructions
carefully before beginning installation. A copy of this document is required by NFPA 72 to be maintained on site.
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.
• Installation must be performed by qualified personnel
and in accordance with all national and local codes and
ordinances.
• Shock hazard. Disconnect power source before servicing.
Serious injury or death could result.
• Risk of explosion. Not for use in hazardous locations. Serious
injury or death could result.
Potter Electric Signal Company, LLC
Technical Specifications
Service Pressure
Flow Required for
Alarm
Maximum Surge
Enclosure
Contact Ratings
Conduit Entrances
Usage
Environmental
Specifications
Service Use
*Specifications subject to change without notice.
• St. Louis, MO •
•
5401207 - REV J 11/21
Vane Type Waterflow Alarm
Switch With Retard
300 PSI (20,68 BAR) - UL
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
18 FPS (5,5 m/s)
Cover - Weather/UV/Flame Resistant High Impact Composite
Base - Die-cast aluminum
Two sets of SPDT (Form C)
10.0 Amps at 125/250VAC
2.0 Amps at 30VDC Resistive
10 mAmps min. at 24VDC
Two 1/2" conduit connections provided. Individual switch
compartments suitable for dissimilar voltages.
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).
• 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
Automatic Sprinkler
One or two family dwelling
Residential occupancy up to four stories
National Fire Alarm Code
Phone: 800-325-3936
VSR-S
NFPA-13
NFPA-13D
NFPA-13R
NFPA-72
• www.pottersignal.com
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