DEVIreg™ 850 IV
Installation instruction10
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).
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