Page 7 of 9
Acorn Safety
a division of Acorn Engineering
Manual #7109-305-001
Installation & Operation Manual
4. Connect the ground wires and ground in
accordance of local and NEC National Electrical
Code requirements. A green ground screw is
provided on the alarm box (or J-box).
STEP ONE:
FLOW SWITCH INSTALLATION
1. Determine location of flow switch in water
supply line. The inlet and outlet ports of the flow
switch must be a minimum of 6” from any tees
or elbows (as shown on page 3) in the water
supply line. Refer to page 6 and rough-in
drawing.
2. Pipe the flow switch in-line of fixture supply
inlet. The switch body must be in the vertical
position with the water pipe horizontal. The
water flow must be in the direction of the arrow
that is marked on the flow switch body. Refer to
page 6 and rough-in drawing.
STEP TWO:
ALARM INSTALLATION
2.Attach alarm hanger plate as shown with angled
flange in an upward orientation.
1. Determine mounting method and location of
alarm. As a recommendation, locate the alarm
near emergency equipment and in a manner
that would allow it to be readily visible by
employees and quick reaction or emergency
personnel when activated.
3. Connect wiring (supplied by others) to the
terminals within the flow switch junction box as
shown in the appropriate wiring diagram. Extra
set of wiring terminals provided for remote
monitoring, not shown.
3. Field wire flow switch to alarm box (or J-box).
Provide electrical service wiring to alarm box (or
J-box). Note: Circuit wiring should not be
energized at this time. It is recommended that
the alarm and other components be installed in
accordance of national and local electrical
codes.
5. Connect flow switch field wiring and electrical
service wiring to alarm terminals as indicated in
wiring diagram.
6. Hang the horn/strobe assembly over the hanger
plate with the mounting screw at the bottom,
then tighten mounting screw to secure..
7. Apply power to the circuit and test to verify
operation.
SURFACE MOUNTING J-BOX
(NTS)
2" [51]
3"
[76]
1
2
" NPT REMOVABLE
BOX PLUGS
#10 x 1-1-4" LONG PHILLIPS
HEAD SCREWS PROVIDED
CAP PLUGS
PROVIDED
Ø
1
4
" [6.3] FIELD
DRILLING REQUIRED
2" [51]
1
1
2
"
[38]
HANGER PLATE
HORN / STROBE
ASSEMBLY
Revised: 12/10/18
