PRINTED IN USA
PAGE 5 OF 6
AUTO TEST VSR (VSR-AT)
VANE TYPE WATERFLOW ALARM SWITCH WITH
ELECTRONIC RETARD AND AUTO TEST FEATURE
MFG. #5401239 - REV B
3/14
Do not connect power directly to these terminals.
DWG1239-3
C NO C NO GND LED
SWITCH
+ -
ALARM
ALARM
24 VDC PWR
From power source
suitable for bell,
120 VAC connection shown
Bell
Load
(Black)
Neutral
(White)
Line
(Black)
EOLR
Contact
Monitor
Module
COM
NO
Addressable
Relay
SLC
from
FACP
Fig. 7
Typical Electrical Connections For Operation by Addressable Fire Alarm Panel
Aux. power of
fire panel or
other Listed 24
VDC supply.
24 VDC @ 120 mA.
Notes:
1. The model VSR-AT has two sets of alarm contacts:
•
The connection to the waterflow zone of the fire panel involves 3
terminals on the VSR-AT. C
and NO. Connect the two wires
from the waterflow zone of the fire panel to the C and NO terminals
with the End of Line Resistor of the fire panel being connected
across the C and other terminal as shown on the drawing. The
NO and resistor terminal are internally connected by a normally
energized relay. A loss of power or failed AutoTest causes the relay
to drop out and initiate a trouble on the fire panel.
• The second connection may be used for a local audible or visual
annunciator.
2. For supervised circuits, see “Switch Terminal Connections” drawing
and warning note (Fig. 3).
The Auto Test feature can be initiated by momentarily connecting
the GND and Switch terminals together using the Auto Test Control
(ATC) or any UL Listed switch or relay.
