Install Instructions

3 of 8 © 2009 D 090 - 07/09
socket and conduit can be installed in order to provide a backup sensor location
if the first location is not found to be ideal.
Vehicle tire and pedestrian traffic can track water and contaminants onto the snow
melt area. If the snow / ice sensor is located in the traffic area, snow melting will be
triggered by the passing traffic. This may be desirable in commercial areas where
excessive traffic can cause the surface to become icy. In residential installations,
the amount of traffic is usually limited, and it may be desirable to locate the
snow / ice sensor away from the traffic area. This will reduce the number of snow
melt events that occur and thereby reduce the annual fuel consumption.
The location of the sensor should be midway between the heating pipes or
elements.
Conduit
Place the sensor socket at the chosen location and run a conduit for the cable
from the socket to the snow / ice detection control. If more than 210’ (64 m) of cable
is required to reach the control, run the conduit to a weatherproof junction box.
The sensor cable should be run in its own conduit and not in combination with
high voltage wiring.
The conduit length from the sensor to the junction box should be less than the 210’
(64 m) of cable supplied with the 094 snow / ice sensor.
At the junction box, additional 18 AWG, 5 conductor cable can be spliced on to
increase the total length to 500’ (150 m) from the sensor to control.
Avoid tying the conduit to the rebar within 6’ (2 m) of the socket. This allows the
rebar grid to move without disturbing the position of the socket.
Sloped Surfaces
The top of the snow / ice sensor should be flush and parallel
to that of the snow melt surface.
When the sensor is installed on a sloped driveway, the sensor
must be installed near the lowest elevation of the slope. This
is required since the melting snow or ice runoff water will drain
toward the lowest point on the driveway and keep this area wet
for longer periods of time.
Installing the Socket
A mounting plate has been included to simplify the installation
of the sensor socket. When possible, the mounting plate
should be located directly on top of gravel in order to provide
good drainage. If the slab is more than 4 thick, a mound of
crushed rock or a styrofoam or wooden block can be used to
elevate the socket. A hole must be punched or drilled in the
styrofoam or wooden block in order to provide drainage.
Failure to provide adequate drainage under the socket may reduce the life
expectancy of the snow / ice sensor.