Potter VSR-2 User Manual

PRINTED IN USA PAGE 1 OF 4
VSR
VANE TYPE WATERFLOW
ALARM SWITCH WITH RETARD
MFG. #5401146 - REV M
11/15
UL, CUL and CSFM Listed, FM Approved, LPCB Approved, For
CE Marked (EN12259-5) / VdS Approved model use VSR-EU
Service Pressure: 450 PSI (31 BAR) - UL
Flow Sensitivity Range for Signal:
4-10 GPM (15-38 LPM) - UL
Maximum Surge: 18 FPS (5.5 m/s)
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 knockouts provided for 1/2" conduit.
Individual switch compartments suitable
for dissimilar voltages.
Environmental Specications:
 • NEMA4/IP54RatedEnclosuresuitableforindooror
outdoor use with factory installed gasket and die-cast housing
whenusedwithappropriateconduittting.
 • TemperatureRange:40°F-120°F,(4.5°C-49°C)-UL
 • Non-corrosivesleevefactoryinstalledinsaddle.
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
• Installationmustbeperformedbyquali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.
Ordering Information
NominalPipeSize Model PartNumber
2" DN50 VSR-2 1144402
2 1/2" DN65 VSR-2 1/2 1144425
3" DN80 VSR-3 1144403
3 1/2" - VSR-3 1/2 1144435
4" DN100 VSR-4 1144404
5" - VSR-5 1144405
6" DN150 VSR-6 1144406
8" DN200 VSR-8 1144408
Specicationssubjecttochangewithoutnotice.
Optional:CoverTamperSwitchKit,stockno.0090148
Replaceable Components:Retard/SwitchAssembly,stockno.1029030
Waterow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.Waterowswitchesusedforthis
application may result in unintended discharges caused by surges,
trappedair,orshortretardtimes.
Potter Electric Signal Company, LLC• St. Louis, MO • Phone: 866-956-1211/Canada 888-882-1833 • www.pottersignal.com
General Information
TheModelVSRisavanetypewaterowswitchforuseonwetsprinkler
systems.ItisULListedforuseonasteelpipe;schedules5through40,
sizes2"-6"andisULListedandFMApprovedforuseonsteelpipe;
schedules10through40,sizes2"thru8"(50mmthru200mm).LPC
approvedsizes are 2" thru 8" (50 mm thru 200 mm). See Ordering
Information chart.
TheVSRmayalsobeusedasasectionalwaterowdetectoronlarge
systems.TheVSRcontainstwosinglepole,doublethrow,snapaction
switchesandanadjustable,instantlyrecyclingpneumaticretard.The
switchesareactuatedwhenaowof10GPM(38LPM)ormoreoccurs
downstreamofthedevice.Theowconditionmustexistforaperiod
of time necessary to overcome the selected retard period.
Enclosure
TheVSRswitchesandretarddeviceareenclosedinageneralpurpose,
die-cast housing. The cover is held in place with two tamper resistant
screws which require a special key for removal. A eld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.
Important: This document contains important information on the installation and operation of theVSR waterow switches. Please read all
instructionscarefullybeforebeginninginstallation.AcopyofthisdocumentisrequiredbyNFPA72tobemaintainedonsite.

Potter VSR-2 Specifications

General

Brand	Potter
Model	VSR-2
Category	Switch
Language	English