DEVIREG™850 (D850 DP-10)

Ice and Snow Melting

TECHNICAL SPECIFICATIONS
Basic Temperature setting	-9,9ºCº to -0,1ºC
Melting Temperature Range	+0ºC to +9,9ºC
Post heat period	0 to 9 Hours
Moisture level	5 to 95 (5 being the most sensitive to moisture)
Voltage Devireg™850 Power Supply	180-250 V ~ 50/60 Hz 18 - 26 V DC
Power Consumption Devireg™850 Roof sensors Ground Sensors	Max. 3W Max 8W each Max. 13W each
Load	250 V ~ 3 x 16 A
Inductive load	1A
Indicator Display	2 x 16 character, illuminated
Ambient Temperature Devireg™850 Roof sensor Ground Sensor	-10ºC to +40ºC -30ºC to +70ºC -30ºC to +70ºC
IP Class devireg™850 Roof sensor Ground Sensor	IP 20 IP 67 IP 67

Introducing an intelligent, digital solution for optimised ice and snow melting.

Devireg™ 850 is the most optimal solution for keeping up to 2 independent areas or free of ice and snow and it is possible to prioritise which area gets first consideration - very useful when power supply is limited. The system is controlled by measuring a combination of the temperature and the moisture level. By including the moisture measurement, up to 75% less power is required to achieve the desired ice/snow melting requirement. The system will only start the heating when both low temperature and a certain level of moisture are detected. This energy saving system significantly reduces running costs.

Wiring Diagrams

Devireg™850

Power Supply

Devireg™850 Technical Specs

Functions

DIN rail electronic thermostat with (external) DIN rail 24V power supply.
Working temperature range for sensors: Ground -30ºC to 70ºC : Roof -50ºC to 70ºC
Three 16-amp relays – total maximum of 30 amps. One of the relays can be used for an external alarm.
Adjustable operating mode: Automatic; Constant ON (manual timer); Manually OFF
Adjustable parameters: Melting temperature; Basic temperature; Moisture sensitivity; Post heating period.
Adjustable language display.
View actual sensor measurements. View the actually temperature and moisture level for the sensors.
Info-button for help/information. The info-button will guide you through all the different menus and settings.
Alarm function. Allows connection to an external alarm. Red light indicator will blink when alarm stats occurs.
Fault finding function. The devireg™ 850 has a self diagnosing program, which will detect faults - faulty sensor, clogged drains etc. - and will show an alarm warning - an external alarm may also be fitted.
devinet™ enabled.
devibus™ enabled. Connect the sensors in parallel and install only one cable back to the devireg™850. This cable can be extended for up to at 400 meters.
RS232 enabled. Connect the devireg™850 to a computer when appropriate software is available.
Two intelligent, digital sensors – one to detect when the surface needs to be heated up, and the other one to detect when the surface is dry. This will reduce energy consumption and give optimal protection against ice.

Features

Ice and snow melting thermostat for ground areas
Intelligent sensing of outdoor ground & roof applications
Combined moisture and temperature sensors
Digital sensors with high accuracy
Reduced energy consumption
Easy and flexible installation
Set and forget
User-friendly information on the display and easy set-up
Language selection
Future proof system - software upgradeable
High durability

Applications

Driving areas
Ramps
Stairs
Driveways
Pavements
Parking areas
Doorways
Loading areas
Bridges
Car parks
Roofs
Roof gutters
Valley gutters
Drains

Links referenced

Devireg™850: /img/content/411/442/850-wiring-diagram-thermostat.jpg
Power Supply: /img/content/411/442/850-wiring-diagram-pwr-supply.jpg
Technical Specs: /img/content/411/442/850-tech-specs-jpg.jpg

Location http://www.devi.co.nz/index.cfm/1,108,0,0,html