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AUTO TEST VSR (VSR-AT)
VANE TYPE WATERFLOW ALARM SWITCH WITH
ELECTRONIC RETARD AND AUTO TEST FEATURE
MFG. #5401239 - REV B
3/14
UL, CUL, FM Approved
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:
2.5 AMP @ 125/250 VAC & 30 VDC
Power Requirements:
24 VDC From Listed or Approved Source
With Battery Backup
Typical Current Draw:
Standby 20 mA
Alarm 65 mA
Autotest 120 mA
Conduit Entrances:
Two knockouts provided for 1/2" conduit.
Environmental Specifications:
• NEMA 4/IP54 Rated Enclosure suitable for indoor or
outdoor use with factory installed gasket and die-cast housing
when used with appropriate conduit fitting.
• 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
Ordering Information
Nominal Pipe Size
Model
Part #
Replacement PCB #
2"
DN50
VSR-AT-2
1116102
1029074
2 1/2"
DN65
VSR-AT-2 1/2
1116125
1029075
3"
DN80
VSR-AT-3
1116103
1029076
3 1/2"
-
VSR-AT-3 1/2
1116135
1029077
4"
DN100
VSR-AT-4
1116104
1029078
5"
-
VSR-AT-5
1116105
1029079
6"
DN150
VSR-AT-6
1116106
1029080
8"
DN200
VSR-AT-8
1116108
1029081
Optional Power Supply: Ordering Information
Model
Description
Part Number
-
Power Supply
3006479
BT-80
12V Battery-8AH (2 REQUIRED)
5130084
Optional Test Switch: Ordering Information
Model
Description
Part Number
ATC-1
Single Zone Test Control
1000221
ATC-4
Four Zone Test Control
1000224
SGB-R
Single Gang Box-Red
1000483
DGB-R
Double Gang Box-Red
1000484
General Information
The model VSR-AT is an electronic vane type waterflow switch for
use on wet sprinkler systems. It is UL Listed and FM Approved for
use on steel pipe schedules 10 thru 40 sizes 2” thru 8”. See ordering
Information chart.
The VSR-AT may also be used as a sectional waterflow detector on large
systems. The VSR-AT has two sets of alarm contacts and an adjustable
instantly recycling electronic retard. The alarm contacts are actuated
when a flow of 10 GPM (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 time.
The VSR-AT may be remotely tested without flowing water by using
the optional auto test Control model ATC-1or ATC-4 or the use of
addressable relays and monitor modules as part of a listed addressable
•
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.
Specifications subject to change without notice.
fire alarm panel.
When the auto test feature is initiated, the VSR-AT performs a self test to
ensure compliance with UL requirements regarding waterflow detection
and retard time. In addition, the auto test feature ensures the integrity of
the paddle/trip stem assembly. A successful completion of the auto test
will activate both sets of normally open contacts on the flow switch. If
the auto test detects a problem with the trip stem/paddle assembly or if
there is no water in the pipe, neither normally open contact will operate
and the flow switch will indicate a trouble condition at the test switch
and transmit a trouble signal to the fire alarm panel.
Enclosure
The VSR-AT 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.
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.
Potter Electric Signal Company, LLC • St. Louis, MO • Phone: 866-956-1211/Canada 888-882-1833
• www.pottersignal.com
Important:
This document contains important information on the
installation and operation of VSR-AT 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.
