❸
Connect one Dry Contact Sensor wire to the float
switch wire that goes to the thermostat.
NOTE: If the unit has more than one float switch, ensure the Dry
Contact Sensor connects to the last float switch in the series.
❹
Connect the remaining Dry Contact Sensor wire to
the C terminal on the HVAC control board.
❺
The switches on the front of the Dry Contact Sensor
should be set to NC (black) and 24V (orange).
❻
Remove the battery tab from the Dry Contact Sensor.
❼
Using the screws, double-sided adhesive tape, or cable
tie provided, install the mounting bracket to a wall or
pipe near the desired monitoring area, and then
mount the Dry Contact Sensor.
❽
Turn on power to the HVAC unit. If the LEDs are
blinking in a pattern, that means the switches are
configured incorrectly. Please double check the wiring
and switch positions before testing the unit.
❾
Test the operation of the Dry Contact Sensor by
tripping the float sensor and holding it in that position
for approximately two seconds. Ensure the Alert LED
on the Dry Contact Sensor turns on for 3 seconds. If the
sensor remains in the alert state, it will continue to blink
for 5 minutes.
4
5
Monitoring the R-wire with float switches wired
between the HVAC transformer and the HVAC
control board
❶
Turn off power to the HVAC unit.
❷
Connect one Dry Contact Sensor wire to the
R terminal on the HVAC control board.
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