Danfoss DEVIreg 850, Инструкция по установке и эксплуатации

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DEVIreg™ 850 ground and roof sensors
Installation and user manual 6
2 Placing and installation of sensors
At this point you must have identified and assigned sensors to the control zones as
prescribed in section 1.
In this section 2 you will be guided through a correct placing and installation of the sensors:
• For placing and installation of ground sensors see section 2.1.
• For placing and installation of roof sensors see section 2.2.
2 .1 Placing ground sensors
Placing ground sensors in appropriate spots is very important for the performance of
the ice and snow melting system. The appropriate spot must fulfill some characteristics,
where the below 2 are the most important:
The sensors must be placed minimum 1 m within the boundaries of the heated zone .
The sensors must not be covered or prevented from being exposed to snow or rain .
This includes dirt, leaves and pebbles .
2 .1 .1 Placing the first ground sensor in a zone
Find one who knows the area and make him describe the area function and weather
conditions.
The first ground sensor in a zone must now be placed where the first snow appears. The
appropriate spot can be found by following below steps:
a) Where the heated area is in shade all day. Look e.g. for algae.
b) Where e.g. a wind shield make the snow drift
c) Where the most traffic from shoes or car wheels happens
If you have a dual zone system, the first sensor for the other zone must be placed by
following the same steps above.
2 .1 .2 Placing the following ground sensors in a zone
The following ground sensors in a zone must be placed where the
surface dries up last
.
The appropriate spot can be found by following below steps:
a) Where the heated area is in shade all day
b) Where the melting water accumulates e.g. due to hollows in the area
c) So the whole zone is covered, but min. 1 meter from other sensors
If there is doubt about the appropriate spot, prepare a second spot for later use.