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DEVIreg™ 850 IV
Installation instruction 10
2 Installer Manual
2�1 System overview
The DEVIreg™ 850 can handle up to 2 independent areas, in any of the following
combinations:
• Single roof system
(1 system, 1–4 roof sensors)
• Single ground system
(1 system, 1–4 roof sensors).
• 1 ground system and 1 roof system (combi system)
(2 systems, 2–4 sensors total, minimum 1 sensor per system).
• 2 roof systems (dual system)
(2 systems, 2–4 sensors total, minimum 1 sensor per system).
• 2 ground systems
(dual system)
(2 systems, 2–4 sensors total, minimum 1 sensor per system).
When more than 1 area is controlled by the DEVIreg™ 850 system, it is also possible to
prioritize the areas. Prioritizing makes it possible to operate 2 areas, even if the needed
power for 2 areas is not present.
A typical ice and snow melting system consists of:
• DEVIreg™ 850
•• Only 1 DEVIreg™ 850 is allowed on the DEVIbus™.
• Power supply
•• More power supplies can be connected in parallel (if needed)
•• Be aware of maximum number of sensors on each power supply
(Refer to Technical Specification for power demand of sensors).
• Ground and/or roof sensor(s)
•• Be aware of maximum number and cable length of sensors on each power supply
(Refer to sensor manual for a more detailed description).