Install Instructions

© 2009 D 090 - 07/09 2 of 8
Installation
Caution
Improper installation and operation of this sensor could result in damage to
equipment and possibly even personal injury. It is your responsibility to ensure
that this sensor is safely installed according to all applicable codes and standards.
Please follow these step-by-step instructions to gain a full understanding of this
device.
STEP ONE
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GETTING READY
Check the Contents
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 tekmar sales representative
for assistance.
Type 090 includes:
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One Snow / Ice Sensor 090 with “O” ring
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Four, #6-32 x 3/8”
screws
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Four, #4-40 x 7/16” screws
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One Data Brochure D 090
Type 094 includes:
•
• One Snow / Ice Sensor 094 with “O” ring
•
• Four, #6-32 x 3/8”
screws
•
• Four, #4-40 x 7/16” screws
•
• One Data Brochure D 090
Type 091 includes:
•
• One Snow / Ice Sensor Socket 091
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• One protective plastic
plug
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• One plastic mounting plate
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• Eight, #6-32 x 3/8” screws
•
• One Data Brochure
D 090
STEP TWO
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MOUNTING THE SENSOR
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
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