IOM-WR-Snow_Ice-090_09 324
2 of 8
Check the contents of this package. If any of the contents listed are missing or
damaged, please refer to the Limited Warranty and Product Return Procedure
on the back of this brochure and contact your wholesaler or Watts Radiant sales
representative for assistance.
Order number 81005661 includes:
• One Snow / Ice Sensor 090 with “O” ring • Four,
#6-32 x 3/8" screws • Four, #4-40 x 7/6" screws • One Installation & Operation Manual
Order number 81003753 includes:
• One Snow / Ice Sensor Socket 09 • One
protective plastic plug • One plastic mounting plate • Eight, #6-32 x 3/8" screws • One
Installation & Operation Manual
Location of the Sensor
----------------------------------------------
The location of the snow / ice sensor determines how well the snow melt detector
responds to conditions on the snow melting slab. The sensor measures the
temperature of the slab surface, and would normally be installed in a location that
is representative of the average surface temperature and moisture conditions. The
only exception to this practice would be those applications where the sensor is
placed in a specific problem area where ice or snow often forms first.
The installer should be careful to place the sensor in a location where it will not be
affected by abnormal temperature conditions that may occur near buildings, hot air
exhaust ducts or other heat sources, or sunny areas within a larger slab area.
As well as reading temperatures, the sensor also detects surface water. The installer
should be careful not to place the sensor where standing water could accumulate
on its surface. Standing water in the socket may cause the snow melt system to
be held on far longer than necessary, as the control will be getting a signal that
water is present even though the rest of the slab surface may be dry. In addition,
the sensor should not be placed in areas where drainage is considerably better
than the surrounding area.
The snow / ice sensor should not be installed in locations where vehicles park,
near building overhangs or near trees since this may interfere with snow fall
accumulation. If in doubt about the location of these obstacles, a second spare
socket and conduit can be installed in order to provide a backup sensor location.
Some Watts Radiant Snow Melting Controls are capable of dual sensing. To
determine if this feature is available, refer to the Installation & Operation Manual
for the Snow Melting Control.
•
•
•
•
Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use information can result in
personal injury, property damage, or damage to the equipment.
Keep this Manual for future reference.
It is your responsibility to ensure that this sensor is safely installed according to
all applicable codes and standards. Watts Radiant is not responsible for damages
resulting from improper installation and/or maintenance.
Step 1 - Check the Contents
Step 2 - Sensor Installation
