Powers 460 Series AquaSentry 2 Temperature Alarm System - Manual (Page 2)

Apply power to the panel. The correct process temperature should
be displayed on the display. If the audio indicator is sounding, press
the “RESET” key twice. The shutoff valve (if used) should be open,
and the AquaSentry 2 should now be functional.
• If the display does not indicate the correct temperature, refer to
the troubleshooting instructions.
• If the display is flashing, the process is outside setpoint limits.
Either correct the process temperature, or change the set-
points. Press the “RESET” key again. The display should stop
flashing, and the shutoff valve (if used) should open.
When the alarm sounds:
• Press the “RESET” key to silence the audio indicator.
• Take necessary actions to correct the cause of the over/under
temperature condition.
• When the temperature on the display returns to within setpoint
limits, press the “RESET” key again to reset the alarm. The dis-
play should stop flashing, and the shutoff valve (if used) should
open.
• If the temperature on the display is not within setpoint limits,
the alarm will not reset, the shut-off will remain closed, and the
display will continue to flash.
1. Mount electrical box to stud or other wall surface, so front
panel is flush with wall. Position box so that mounting screws
are in the upper left and lower right locations.
2. Mount sensor junction box within 2 1 ⁄
2
feet from sensor location.
3. Mount the transformer on an appropriate electrical box and
insure 120 VAC is available. (Do not connect power at this time.)
4. Run wire (16–18 gauge stranded wire) from the transformer
secondary (two screw terminals) to the 4 x 4 Aqua Sentry elec-
trical box. Leave approximately 6" for connections in the box.
5. Run sensor cable from the sensor junction box to the 4 x 4 Aqua
Sentry electrical box. Leave approximately 6" at each end.
6. Connect wires as shown in Figure 3 if using selonoid valve or
figure 4 if using motorized valve.
7. Plug Sensor into sensor junction box.
8. Carefully tuck excess wire into the 4 x 4 Aqua Sentry electrical
box and screw module into box.
9. To use shutoff feature, wire as follows
(see Figure 3 or 4):
Terminal 8: Common
Terminal 7: Normally open
Terminal 6: Normally closed
9. Ensure all electrical wiring conforms to local and National elec-
trical codes.
10. Connect 120 VAC to transformer primary input.
1. Locate a suitable point to install sensor. This should be either
at the source of medium being monitored (water heater, boiler,
master mixer, etc.), or at any specific point within the system
that needs to be monitored. For typical domestic tempered
water systems, sensor should be installed 2' to 5' from the mix-
ing valve.
2. Install a pipe “T” in the line, and install reducer bushing (if
required) to reduce the out branch to 1 ⁄
2
" NPT.
3. Install the 1 ⁄
2
" NPT to 1 ⁄
4
" sensor adapter (supplied) to the pipe
“T”.
4. Slide the temperature sensor into the adapter until the tip is in
the approximate center of the flow, and secure by tightening
the compression nut.
Operating Instructions
n
Installation
n
Sensor Installation
n
2
Sensor adaptor Sensor adaptor
Reducer bushing
(use only one)
3/4˝ or larger pipe
Attach sensor junction box
no further than 2-1/2 feet
Compression nut
Adapter
Sensor tip in
Sensor
Sensor Junction Box
1/2˝ pipe
Figure 2—Sensor Installation