Potter Releasing Systems - Manual (Page 92)

92
PRINTED IN USA MFG. #5401206 - REV G
12/08
VSR-S
VANE TYPE WATERFLOW
ALARM SWITCH WITH RETARD
FOR SMALL PIPE
PAGE 1 OF 3
Stock No. 1144440
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 general purpose,
die-cast housing. 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
These devices may be mounted in 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 6" (15cm)
of a valve, drain or fitting which changes the direction of the waterflow.
Select the proper paddle for the pipe size and type of TEE used see Fig.
1 for instructions on changing 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 teflon tape.
Screw the device into the TEE fitting as shown in Fig. 2. Care must be
taken to properly orient the device for the direction of waterflow.
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 installations with
the proper adapters so that the specified TEE fitting may be installed
on the pipe run.
Note: Do not leave cover off for an extended period of time.
Potter Electric Signal Company, LLC • St. Louis, MO • Phone: 866-956-0988/Canada: 888-882-1833 • www.pottersignal.com
UL, ULC, CSFM Listed and NYMEA Accepted
Service Pressure: Up to 300 PSI (20,7 BAR)
Flow Sensitivity Range for Signal: 4-10 GPM (15-38 LPM) UL
Maximum Surge: 18 FPS (5,5 m/s)
Enclosure: Die-cast, red enamel finish
Cover held in place with tamper resistant screws
Contact Ratings: Two sets of SPDT (Form C)
10.0 Amps at 125/250 VAC
2.0 Amps at 30 VDC Resistive
10mAmps min. at 24 VDC
Conduit Entrances: Two openings provided for 1/2" conduit.
Individual switch compartments suitable for
dissimilar voltages.
Usage: 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).
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 to 120° F, (4,5° C to 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
Optional: Cover Tamper Switch Kit, Stock No. 0090148
(See Fig. 7 for terminations)
Replaceable Components: Retard/Switch Assembly, stock no. 1029030
Installation must be perfomed 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.