R
Stock No. 1144441
Installation must be perfomed by qualifi ed 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.
The Model VSR-S is a vane type waterfl ow switch for use on wet
sprinkler systems that use 1" (25mm), 1 1/4" (32mm), 1 1/2" (38mm) or
2" (50mm) pipe size. The unit may also be used as a sectional waterfl ow
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 fl ow of 10 gallons per minute (38 LPM) or more
occurs downstream of the device. The fl ow 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 general
purpose, die-cast housing. A cover tamper switch is included to indicate
unauthorized removal of the cover.
Installation
These devices may be mounted in a horizontal or vertical pipe. On
horizontal pipe they should be installed on the top side of the pipe
where they will be accessible. The units should not be installed within
Potter Electric Signal Company, LLC • 100 Westmore Dr. Units 6 & 7, Etobicoke, ON, Canada M9V5C3 • Phone: 888-882-1833 • www.pottersignal.com
PRINTED IN USA
FOR SMALL PIPE
UL, ULC, CSFM Listed and NYMEA Accepted
Service Pressure: Up to 300 PSI (20,7 BAR)
Minimum Flow Rate for Alarm: 10 GPM (38 LPM)
Maximum Surge: 18 FPS (5,5 m/s)
Enclosure: Die-cast, red enamel fi nish
Contact Ratings: Two sets of SPDT (Form C)
Conduit Entrances: Two knockouts provided for 1/2" conduit.
Usage:
Environmental Specifi cations:
• Suitable for indoor or outdoor use with factory installed gasket
• NEMA 4/IP55 rated enclosure - use with appropriate conduit
• Temperature range: 40° F to 120° F, (4,5° C to 49° C)
Service Use:
Automatic Sprinkler
One or two family dwelling
Residential occupancy up to four stories
National Fire Alarm Code
Cover Tamper: Detects removal of cover
Replaceable Components: Retard/Switch Assembly, stock no. 1029030
6"(15cm) of a valve, drain, or fi tting which changes the direction of the
waterfl ow. Select the proper paddle for the pipe size and type of TEE
used. See Fig. 1 for instructions on changing the paddle. The unit has a
1" NPT bushing for threading into a non-corrosive TEE. See Fig. 2 for
proper TEE size, type, and installation. Use no more than three wraps
of Tefl on tape.
Screw the device into the TEE fi tting as shown in Fig. 2. Care must be
taken to properly orient the device for the direction of waterfl ow.
The vane must not rub the inside of the TEE or bind in any way. The
stem should move freely when operated by hand.
The device can also be used in copper or plastic pipe installation with
the proper adapters so that the specifi ed TEE fi tting may be installed
on the pipe run.
Note: Do not leave cover off for an extended period of time.
MFG. #5401207 - REV H
12/08
firealarmresources.com
VSR-S
VANE TYPE WATERFLOW
ALARM SWITCH WITH RETARD
10.0 Amps at 125/250 VAC
2.0 Amps at 30 VDC Resistive
Individual switch compartments suitable for
dissimilar voltages.
Listed plastic, copper and schedule 40 iron pipe.
Fits pipe sizes - 1" (25mm), 1 1/4" (32mm), 1 1/2" (38mm)
and 2" (50mm)
Note: 12 paddles are furnished with each unit, one for each pipe
size of threaded and sweat TEE, one for 1" (25mm) CPVC,
one for 1" (25mm) CPVC (Central), one for 1" threaded Nibco
CPVC, and one for 1 1/2" (38mm) threaded (Japan).
and die-cast housing.
fi tting.
Switch Contact: SPDT (Form C)
Contact Rating: 3 Amps at 250 VAC
5 Amps at 125 VAC
1mA at 5 VDC min.
Terminations:
8" (20cm) 22 AWG wire leads
NFPA-13
NFPA-13D
NFPA-13R
NFPA-72
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