DEVI DEVIreg 850 User manual

1
Installation and user manual
DEVIreg™ 850 controller
GB-DAS

2
1: User Manual
System overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
General use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Menu system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Possible alarms during operation
Clogged drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Missing sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
New sensor added . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Sensor malfunction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Changing parameters and performance of systems . . . . . . . . . . . . . . . . . . . . 8
Roof system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Ground system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2: Installer Manual
System overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Connection steps for system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Installation steps for system/systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Installation of roof system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Installation of ground system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Installation of combi system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Installation of dual system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Modication of system(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Replacing a malfunctioning sensor. . . . . . . . . . . . . . . . . . . . . . . . . . 23
Add an extra sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3: Technical Specications
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Factory settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4: Appendix
A: Menu system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
B: How it works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Roof system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Ground system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Security and energy consumption . . . . . . . . . . . . . . . . . . . . . . . . . . 35
C: PSU and feeder cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Ground system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Roof system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Table of Contents

3
System overview
The DEVIreg™ 850 system is capable of keeping outdoor areas free of ice and snow.
The DEVIreg™ 850 can handle up to 2 independent areas, in any of the following
combinations:
User Manual
tSingle roof system
To keep gutters, valley gutters and down pipes free
of ice and snow, and to prevent icicles from causing
damage. It is also possible to use the roof system to
reduce/remove the snow weight from a roof. (Roof
system A)
A
tSingle ground system
To keep areas like parking areas, paths, garage en-
trances, steps, ramps, roadways and bridges free of
ice and snow. (Ground systems A)
AA
t1 ground system and 1 roof system (combi system)
Consists of 1 single roof system A and 1 single
ground system B.
A
BB
t roof systems (dual system)
Consists of 2 x “Single roof systems (A and B)”. B
A
t2 ground systems (dual system)
Consists of 2 x “Single ground systems (A and B)”.
AB

4
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.
The DEVIreg™ 850 is fully automatic and operated digitally by means of the intel-
ligent sensors located in the heated terrain. Each sensor measures both temperature
and moisture, and the system turns the heating elements on and o based on these
readings. By combining moisture and temperature readings, the system is able to save
around 75% energy compared to systems which only measure temperature readings.
The digital sensors used for the DEVIreg™ 850 also provide the most exact readings
when compared with corresponding analogue systems. The result is optimum func-
tionality and low energy consumption.
For more information about the ice and snow melting function of the DEVIreg™ 850,
please refer to: Appendix B: “How it works”.
User Manual
A typical installation consists of:
tController unit (only one)
This is the DEVIce which, based on the measure-
ments from the sensors, decides when to heat the
connected area(s).
tPower supply (one or more)
The power supply delivers power to the controller
unit and the connected sensors.
tGround sensor (one or more)
At least 1 ground sensor is needed for each
ground area, but to get the best performance of a
system, 2 or more sensors are recommended.
For more information please refer to the sensor
manual.
tRoof sensor (one or more)
At least 1 roof sensor is needed for each roof area,
but for complex roof constructions, 2 or more
sensors are recommended.
For more information please refer to the sensor
manual.

5
General use
The DEVIreg™ 850 is operated via 3 buttons and an alpha numeric display capable of
displaying information in various languages.
Buttons
The functions of the 3 buttons are:
Info Shows additional information / help (Only active when lit)
Next Next menu entry / next line / next letter
Enter Conrm / select
Besides the normal function of the buttons, some special combinations are important
to the user:
Return to home of menu system: Hold for 2 seconds
Master reset: Restore factory defaults AND
delete installed systems (In case of insolv-
able problems due to a wrong choice of
language, etc.)
Hold + for 8 seconds
Display
The following icons have a special meaning:
This animated icon is shown, when the system is heating. When the icon is
blinking the system wants to heat, but is paused (system has low priority).
This icon is shown, when the system has detected moisture, and the tempera-
ture is above the melting temperature.
This icon is shown, when the system has detected snow or ice, and the tem-
perature is below the melting temperature.
The DEVIreg™ 850 can simultaneously control up to 2 dierent systems. These 2 sys-
tems are referred to as System A and System B. The DEVIreg™ 850 gives the user the
opportunity to view the current status of the systems. The status can be shown in 2
dierent ways.
User Manual

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Combined view (default):
The combined view shows the status of both systems at
the same time. System A is shown on the upper display
line, and System B is shown on the lower display line.
This view gives the user a quick overview of all the systems.
A:Roof
B:Ground
Flipped view:
The ipped view shows the status of 1 system at a time.
The status of each system is shown for 5 seconds.
This view gives the user more detailed information about
each system.
A:Roof
>> Standby
B:Ground
>> Melting
The user can always press to get more information about the current status
irrespective of view selected.
Menu system
The menu system is navigated by the keys and .
No matter if the DEVIreg™ 850 controls one
or two systems, the look and use of the
menu system is always the same. This is ob-
tained by making the entry to each system in
the main menu. The possibilities and settings
for each system are rst accessible after the
user has selected the desired system.
To the right is given an example of the main
menu and the menus for System A and
System B.
Please note, that only a few of the menus for each system are shown!
For a complete overview of the menu system, please refer to Appendix A: “Menu system”.
System
B
System
A
5s
5s
Only visible when System B is installed !
$5RRI  Ø
%*URXQG  Ù××
$5RRI  Ø
Ó6WDQGE\
6HOHFWV\VWHP$
5RRI
9LHZDODUP
PHQX
%*URXQG  Ù××
Ó0HOWLQJ
9LHZDQGVHW
RSHUDWLQJPRGH
9LHZVHQVRU
PHDVXUHPHQWV
9LHZDQGVHW
RSHUDWLQJPRGH
9LHZVHQVRU
PHDVXUHPHQWV
6HOHFWV\VWHP%
*URXQG
User Manual

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Possible alarms during operation
Clogged drain
Description: When clogged drain warning has been enabled, an alarm is raised
when the system constantly has been detecting moisture for 14
days.
y
If the DEVIreg™ 850 controls more than 1 system, and prioritiz-
ing has been enabled, the time before clogged drain warning
for the down-prioritized system, can be much longer. The
time is only updated, when the system actually is allowed to
heat the area (e.g. the up-prioritized system is not heating)
Solution: - Check gutter and down pipes for any obstacles preventing the
melting water to ow away.
- Check if sensors are covered with dirt.
Missing sensor
Description: When the connection to a sensor is lost, the DEVIreg™ 850 alarms
the user. At the same time the DEVIreg™ 850 automatically switch-
es the system to “Constant O” mode, and user interaction with
the DEVIreg™ 850 is needed.
Solution: - Acknowledge error and go to “Installer Site” in the menu system
and select “Change System”.
- Contact your local installer to get a replacement.
New sensor added
Description: When a new sensor is added, the DEVIreg™ 850 alarms the user and
at the same time automatically switches to “Constant O” mode.
User interaction is needed in order to correct the error.
Solution: Acknowledge error and go to “Installer Site” in the menu system
and select “Change System”.
Sensor malfunction
Description: When something is wrong with the readings from connected sen-
sors to the DEVIreg™ 850, an alarm is raised.
Not all error prone sensors can be discovered using this fea-
ture!
Solution: - Acknowledge error and go to “Installer Site” in the menu system
and select “Change System”.
- Contact your local service centre to get a replacement.
User Manual

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Changing parameters and performance of systems
Several parameters for each system can be changed during and after the installation.
For a complete understanding of how these parameters aect the performance of the
roof and ground system, please refer to Appendix B: “How it works”.
Only change the DEVIreg™ 850 parameters if you are aware of the eects of
your actions. Reference: Appendix A: Installer menu
Roof system
Melting temperature
Changing the melting temperature will aect when the system is activated in case of
moisture and low temperatures.
The factory setting is 1.5°C. This means that the heating system will be activated if the
temperature falls below 1.5°C and moisture is detected.
Moisture level
The “moisture level” decides when the system detects moist.
The factory setting is 50 (on a scale from 5 to 95). The lower the setting, the more sensi-
tive the system is to moisture.
Post-heat
Once the sensor has detected that the roof/gutter is dry and free of ice and snow the
system will keep heating for another hour (default). If you wish to increase/decrease
this time see appendix A: Installer menu.
The factory setting is 1 hour (on a scale from 0 to 9 hours)
Priority
When using the DEVIreg™ 850 as a dual or combi system, it is possible to prioritize the
systems. When the priority of 2 systems is equal, both systems can heat at the same
time. If the priority of the 2 systems diers, and both systems want to heat, only the
system with the highest priority is allowed to heat.
The factory setting is 1 (highest priority) for all systems.
Clogged drain
It is possible to enable and disable the “Clogged drain warning”.
The factory setting is “Warning On”.
System and sensor name
It is possible to change the names of the system and connected sensors (see appendix
A: Installer menu.
User Manual

9
Ground system
Melting temperature
Changing the melting temperature will aect when the system is activated in case of
moisture and low temperatures.
The factory setting is 4°C. This means that the heating system will be activated if the
temperature falls below 4°C and moisture is detected.
Standby temperature (maintained ground temperature)
The higher the standby temperature the faster the system will be able to melt ice and
snow. On the other hand the higher the standby temperature the higher the running
costs. So, determining the standby temperature is a trade-o between fast melting or
low running costs. The factory setting is -3 C°.
Moisture level
The “moisture level” decides when the system detects moist.
The factory setting is 50 (on a scale from 5 to 95). The lower the setting, the more sensi-
tive the system is to moisture.
Post-heat
Once the sensor has detected that the roof/gutter is dry and free of ice and snow the
system will keep heating for another hour (default). If you wish to increase/decrease
this time see appendix A: Installer menu.
The factory setting is 1 hour (on a scale from 0 to 9 hours)
Priority
When using the DEVIreg™ 850 as a dual or combi system, it is possible to prioritize the
systems. When the priority of 2 systems is equal, both systems can heat at the same
time. If the priority of the 2 systems diers, and both systems want to heat, only the
system with the highest priority is allowed to heat.
The factory setting is 1 (highest priority) for all systems.
Clogged drain
It is possible to enable and disable the “Clogged drain warning”.
The factory setting is “Warning On”.
System and sensor name
It is possible to change the names of the system and connected sensors.
User Manual

10
System overview
The DEVIreg™ 850 can handle up to 2 independent areas, in any of the following
combinations:
t 4JOHMFSPPGTZTUFN
(1 system, 1-4 roof sensors)
t 4JOHMFHSPVOETZTUFN
(1 system, 1-4 roof sensors)
t HSPVOETZTUFNBOESPPGTZTUFN (combi system)
(2 systems, 2-4 sensors total, minimum 1 sensor per system)
t SPPGTZTUFNT (dual system)
(2 systems, 2-4 sensors total, minimum 1 sensor per system)
t HSPVOETZTUFNT (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:
t %&7*SFH
Only 1 DEVIreg™ 850 is allowed on the DEVIbus™
t 1PXFSTVQQMZ
More power supplies can be connected in parallel (if needed)
Be aware of maximum number of sensors on each power supply
(Refer to Technical Specication for power demand of sensors)
t (SPVOEBOEPSSPPGTFOTPST
Be aware of maximum number and cable length of sensors on each power supply
(Refer to sensor manual for a more detailed description)
Installer Manual

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 conguration, 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
t1MFBTFOPUJDFUIBUBTJOHMFTZTUFN"-8":4VTFTUIFSystem A output relay
t8IFOVTJOHFYUFSOBMQPXFSSFMBZQMFBTFSFGFSUPUIFDPOOFDUJPOEJBHSBNT
2. Connect the power supply to the DEVIreg™ 850
t%POPUDPOOFDUUIFQPXFSTVQQMZUPNBJOTZFU
3. Connect sensors to the DEVIbus™
t8IFOVTFEBTBEVBMTZTUFNPOMZUIFTFOTPSTGPSSystem 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

12
DEVIreg™ 850DC-PSU 24V/24W
PSU 24V NA
DC output DC supply
White
White
Red
Black
White
White
Red
Black
Sensor Sensor
13 13 14 15 16 17 18 19 20 21 22 23 24
123456789101112
12
54
DEVIbusTM sensors
RS232
Red
Black
White White GND Rx Tx
220 / 240V~
50 - 60 Hz ALARM System A System B
+- -+
The DEVIreg™ 850 has an integral alarm function that monitors the attached sensors
and the in-built microprocessor.
An external alarm may also be connected to the system.
Installer Manual

13
Installer Manual
B - 230V, 1-3 P/1-3 loads - System A
230 V cables
C - 230V, 1-3 P/1-3 loads - System B
230 V cables

14
Installer Manual
%71IBTF-PBETSystem A
400 V cables
&71IBTF-PBETSystem B
400 V cables
F - Direct connection - System A
230 V cables
G - Direct connection - System B
230 V cables

15
Installation steps for system/systems
The installation of the DEVIreg™ 850 is very easy, and the user is guided through the
installation process. The installation process diers a little depending on which kind
and the number of systems to be installed.
Please follow the general description and nally select the installation scenario accord-
ing to the system type.
Change setting with key:
Accept setting with key:
General
Power on DEVIreg™ 850 Welcome to
DEVIreg 850 III
Select language Select
language:English
System is being checked… Checking system

Select system conguration
t3PPGTZTUFN (1 system)
t(SPVOETZTUFN (1 system)
t$PNCJTZTUFN (2 systems)
t%VBMTZTUFN (2 systems)
System size:
1 system
The rest of the installation is divided into the system congurations; roof, ground,
combi or dual, as listed above.
Installer Manual

16
Installation of roof system
The installation of a DEVIreg™ 850 with 1 roof system has been selected.
It is optional if the sensors are connected to the DEVIreg™ 850 before power on or dur-
ing the installation.
The system uses the output System A.
If sensors for System A are not connected - do it now!
Press or wait…
Connect sensors:
System A
System is being scanned to nd type of connected
sensors… System A
Scanning...
Select system type: Roof System type:
Roof
Wait until correct number of sensors for System A is
found.
1 Roof sensor
found. Accept?
Press when all sensors are found…
System A is installed…
System A!
Installed
System is being checked… Checking system

Press to congure System A (naming sensors and
changing factory settings).
Config system:
System A
Please refer to “Changing parameters and performance of systems” in “User Manual”
for description of the congurable parameters.
If for some reason you do not wish to congure the system now you can press to
skip conguration of system .
Press to end conguration. Press to end
configuration.
Installer Manual

17
Installer Manual
Installation of ground system
The installation of a DEVIreg™ 850 with 1 ground system has been selected.
It is optional if the sensors are connected to the DEVIreg™ 850 before power on or dur-
ing the installation.
The system uses the output System A.
If sensors for System A are not connected - do it now!
Press or wait…
Connect sensors:
System A
System is being scanned to nd type of connected
sensors… System A
Scanning...
Select system type: Ground. System type:
Ground
Wait until correct number of sensors for System A is
found.
3 Ground sensor
found. Accept?
Press when all sensors are found…
System A is installed…
System A!
Installed
System is being checked… Checking system

Press to congure System A (naming sensors
and changing factory settings).
Config system:
System A
Please refer to “Changing parameters and performance of systems” in “User Manual”
for description of the congurable parameters.
If for some reason you do not wish to congure the system now you can press to
skip conguration of system .
Press to end conguration. Press to end
configuration.

18
Installer Manual
Installation of combi system
The installation of a DEVIreg™ 850 with 1 roof and 1 ground system has been selected.
It is optional if the sensors are connected to the DEVIreg™ 850 before power on or dur-
ing the installation.
The rst installed system (System A) is using the output System A.
The second installed system (System B) is using the output System B.
It is freely selectable if System A should be the roof or ground system. However it is
preferable that System A is the roof system, since System A is shown on the upper line
of the display. Please refer to the description of the Display and Combined view in the
user manual.
If sensors for System A are not connected - do it now!
Press or wait…
Connect sensors:
System A
System is being scanned to nd type of connected
sensors… System A
Scanning...
Select system type: Roof (if roof system is preferred as
System A)
System type:
Roof
Wait until correct number of sensors for System A is
found.
1 Roof sensor
found. Accept?
Press when all sensors are found…
System A is installed…
System A!
Installed
If sensors for System Bare not connected - do it now!
Press or wait…
Connect sensors:
System B
System is being scanned to nd type of connected
sensors… System B
Scanning...
Wait until correct number of sensors for System Bis
found.
System type:
Ground
Press when all sensors for System Bare found… 3 Ground sensors
found. Accept?

19
Installer Manual
Press when all sensors for System Bare found…
System Bis installed…
System B!
Installed
System is being checked… Checking system

Press to select system to congure.
Config system:
System A
Press to congure selected system (naming sen-
sors, changing factory settings and setting priorities.)
Config system:
System B
Please refer to “Changing parameters and performance of systems” in “User Manual”
for description of the congurable parameters.
Press to end conguration. Press to end
configuration.

20
Installer Manual
Installation of dual system
The installation of a DEVIreg™ 850 with 2 roof systems or 2 ground systems has been
selected.
It is mandatory that no sensors or only sensors for System A are connected to the
the DEVIreg™ 850 before power up. Sensors for System B must be connected to the
DEVIreg™ 850 during the installation steps. Connection of the sensors during instal-
lation can either be done using a switch on the DIN-rail or just connect sensor bus of
System B to the already connected sensor bus of System A.
The rst installed system (System A) is using the output System A.
The second installed system (System B) is using the output System B.
If sensors for System A are not connected - do it now!
Press or wait…
Connect sensors:
System A
System is being scanned to nd type of connected
sensors… System A
Scanning...
Select system type: Ground. System type:
Ground
Wait until correct number of sensors for System A is
found.
1 Ground sensor
found. Accept?
Press when all sensors for System A are found…
System A is installed…
System A!
Installed
Connect sensors for System B.
Press or wait…
Connect sensors:
System B
System is being scanned to nd type of connected
sensors… System B
Scanning...
Select system type. System type:
Ground
Wait until correct number of sensors for System B is
found.
1 Ground sensor
found. Accept?