Danfoss DEVIreg 850, Installation And User Manual

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DEVIreg™ 850 ground and roof sensors
Installation and user manual 5
1 .3 Assign sensors to control zones
There are some good reasons to have
2 or more sensors
in one control zone.
• Higher degree of detection safety , which is relevant for larger, complex or busy
roof and ground areas.
• Approx. 1 hour
faster ground system
, as one sensor measures the ground
temperature and other sensors measure the moisture whereas a single sensor must
switch between temperature and moisture measurements.
Now decide how the ice and snow melting system should be operated and assign the
sensors to the control zones. In case of questions the system designer must be consulted.
Draw circles around
Zone type and 1-4
Sensors
Single zone ground x 1 2 3 4
Maximum
4 sensors
in all
Single zone roof x 1 2 3 4
Combi zones x 1 2 3 1 2 3
Dual zones ground x
2 3 4
Dual zones roof x 2 3 4