11
Placement
The DEVIreg™ 850 and power supply are designed for DIN rail mounting. When mount-
ing please be aware of the following conditions:
The DEVIreg™ 850 is designed and approved to operate in the temperature
range -10°C to 40°C.
The DEVIreg™ 850 is only IP20 protected, thus not water resistant.
The installer must ensure proper enclosure of the DEVIreg™ 850 according to
national standards (electrical safety).
Connection steps for system
Only authorized personnel is allowed to install the DEVIreg™ 850.
When wiring up the DEVIreg™ 850 and sensors, please be aware of the following
conditions:
When the DEVIreg™ 850 is used in a dual system conguration, it is prefer-
able that each sensor bus (DEVIbus™) can be connected and disconnected via
switches. During the installation of a dual system, each system must be con-
nected one at a time.
Be aware of maximum allowable power drain from power supply to sensors.
Below is shown the recommended order of the installation. Please refer to gure A for
connection of DEVIreg™ 850 and refer to gure B-G for a guideline to connect the heat-
ing elements to DEVIreg™ 850.
1. Connect heating cables to the DEVIreg™ 850
t1MFBTFOPUJDFUIBUBTJOHMFTZTUFN"-8":4VTFTUIFSystem A output relay
t8IFOVTJOHFYUFSOBMQPXFSSFMBZQMFBTFSFGFSUPUIFDPOOFDUJPOEJBHSBNT
2. Connect the power supply to the DEVIreg™ 850
t%POPUDPOOFDUUIFQPXFSTVQQMZUPNBJOTZFU
3. Connect sensors to the DEVIbus™
t8IFOVTFEBTBEVBMTZTUFNPOMZUIFTFOTPSTGPSSystem A can be connected. For
connection of System B please refer to chapter: “Installation of dual system”.
4. Connect the power supply to mains.
Installer Manual