Installation instruction
ECtemp 850 IV
© Danfoss | 2019.07 | 11
08097083 / VIMHE202
2
Installer Manual
2 .1
System overview
The ECtemp 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 ECtemp 850 system, it is also possible to
prioritize the areas. Prioritizing makes it possible to operate 2 areas, even if the need-
ed power for 2 areas is not present.
A typical ice and snow melting system consists of:
• ECtemp 850
• Only 1 ECtemp 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).