King Electric SCM - Manual (Page 10)

10
Placement of Individual Ground Sensors
 The sensor must be placed within the heated area and at least 3.3’ (1m) from the edge of the area.
 The sensor must be placed in between the heating cables—a minimum distance of 0.4” (1 cm) should be maintained between the sensor
tube and the heating cable.
 There must be a minimum distance of
3.3’ (1 m) between the two sensors. (As
shown in diagram below)
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KING ELECTRIC MFG CO · 9131 10TH AVENUE SOUTH · SEATTLE, WA 98108 · PH:206 762 0400 · FAX: 206 763 7738 · www.king-electric.com
! WARNING Installation in Asphalt, the temperature must not exceed 176 °F (80°C) around the sensor/tube. A wooden block or similar place hold-
er may be used in the area where the tub/sensor can be placed subsequently. The installation pipe used for the sensor cable should, in that
case, be a metal tube that can withstand high temperatures.
Placement of Ground Sensors
Correct placement of the sensor(s) is important for the system to work as intended. Some basic guidelines follow:
The number of ground sensors:
 The more sensors added to the system the better the performance.
 The basic principle is to place one sensor where the snow/ice will appear first (for fast detection) and one sensor where the snow/ice will
disappear last (for complete melting). Just place the sensors as far apart as possible.
 With only one sensor you will have to decide what is most important:
a) Fast detection and activation of the system or
b) Securing a complete melting of all snow/ice. A one sensor ground system will be slower in terms of detection and activation than a
two senso4r ground system, where one sensor measures the ground temperature and the other sensor measures the moisture.
 Use two or more to cover problem spots where snow usually is not detected or where snow is not completely when the system shuts down.
INSTALLATION INSTRUCTIONS