4
INSTALLATION GUIDE & OPERATION MANUAL | PART NO.
25484
REV
B
With user supplied hardware, mount the
SNOW OWL securely in an upright position
(sensor snowflake at top) in a clear and open
area typical of the area to be melted, either
above the roof line or removed from the
building in an area exposed to falling snow.
Avoid overhead trees, shrubs, wires, eaves,
etc., and falling or blowing debris.
Avoid vehicle and foot traffic. Avoid creating
a tripping or safety hazard.
Avoid exposure to artificial heat sources and
excessive shock and vibration.
Position the sensor at a height to reduce,
eliminate or discourage damage caused by
animals or vandals.
Install in accordance with the requirements of
all applicable electrical and building codes
and regulations. Ensure that all conduit and
cable terminations are watertight.
NEC Article 426.28 requires equipment
ground fault protection (GFEP) for ice and
snow melting equipment. This functionality is
not provided as part of this sensor and must
be provided as part of the overall system.
The SNOW OWL can be mounted at a distance
up to 500 feet away from the controller or
contactor using 22-gauge wires and up to
1000 feet using 18 gauge wires.
Once the SNOW OWL has been mounted in
the desired location it can be connected to the
controller or contactor.
INSTALLATION DIAGRAMS
The following diagrams show the SNOW OWL
and CIT -1 drop in installations
POWER ON SELF TEST
PRE-INSTALLATION TEST
The SNOW OWL performs an internal self test
when the power is first turned on. During the
first 10 seconds of power up the sensor will
turn on its output and engage any contactor
that is connected to it for a short time. For this
reason care should be taken to ensure that
heater power is either connected properly
or that it is turned off/ disconnected before
powering up the sensor. If the sensor gives
a continuous ON-OFF-ON-OFF output then
this is an indication of a bad sensor. As a pre
installation test the POST can be run simply by
powering the unit and observing the output.
