Installation And Dimensions Of The Temperature Sensor; Installation And Dimensions Of The Moisture Sensor - Raychem EMDR-10 Handbuch

2.3 Installation and Dimensions of the temperature Sensor

A good positioning of the temperature sensor is crucial for the correct and efficient operation
of the snow melting system. The temperature sensor should be placed on the North side of the
building, in a position where it will always be away from direct sunlight. Moreover, it must be
protected against other influences, i.e. it may not be mounted above doors or windows and not
close to lamps or floodlights.
A position on the wall just below a gutter is recommended.
2
The connection wire of the sensor may be extended to max. 100 m at a lead diameter of 1.5 mm .
The wires of the temperature sensor has to be considered as carrying mains voltage according
to VDE. The relevant installation regulations must be observed. Connection diagram see item 5.
Dimensions:
35
52
40

2.4 Installation and Dimensions of the Moisture Sensor

A good positioning of the moisture sensor is crucial for the correct and efficient operation of the
snow melting system.
The moisture sensor and heating cable(s) served / controlled by the same control unit should be
positioned in the same roof area. The moisture sensor is usually placed in a gutter at the lowest
position in the system adjacent to one of the drainpipes. This is usually where water / snow is
last cleared from the gutter, hence ensuring that the whole protected area is cleared before the
heating system turns off. The exact positioning will depend on the particular building and the
prevailing weather conditions. If experience shows that the system shuts down before snow is
removed from a key area, then the sensor should be moved to that area.
For mounting the sensor in the gutter use the fixing brackets (Hard-46) to fix the sensor adjacent
and parallel to the heating cable. Ensure that the sensor remains flat and is not in contact with
the heating cable.
The connection wire of the moisture sensor may be extended to max. 100 m at a lead diameter
. Connection diagram see item 5.
of 3 x 1.5 mm
2
The wires of the moisture sensor are carrying mains voltage!
Dimensions:
4 m
650
active sensor length
500
7