Danfoss DEVIreg 850 IV Manuel utilisateur

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Installation instruction

DEVIreg™ 850 IV controller

DEVIreg™ 850 IV

Installation instruction2

Table of Contents

1 User Manual � � � � � � � � � � � � � � � � � � � � � � � � � � 3

1.1 System overview. . . . . . . . . . . . . . . . . . . . . . . 3

1.2 General use . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.3 Possible alarms during operation . . . . . . . . . . . . 7

1.4 Changing parameters and performance of systems 8

2 Installer Manual� � � � � � � � � � � � � � � � � � � � � � � 10

2.1 System overview. . . . . . . . . . . . . . . . . . . . . . .10

2.2 Placement . . . . . . . . . . . . . . . . . . . . . . . . . . .11

2.3 Connection steps for system . . . . . . . . . . . . . . .11

2.4 Installation steps for system/systems. . . . . . . . . .15

2.5 Modiﬁcation of system(s) . . . . . . . . . . . . . . . . .22

3 Technical Speciﬁcations� � � � � � � � � � � � � � � � � � 24

3.1 Technical data . . . . . . . . . . . . . . . . . . . . . . . .24

3.2 Factory settings . . . . . . . . . . . . . . . . . . . . . . .25

4 Appendix � � � � � � � � � � � � � � � � � � � � � � � � � � � 26

A: Menu system . . . . . . . . . . . . . . . . . . . . . . . . .26

B: How it works . . . . . . . . . . . . . . . . . . . . . . . . .31

C: PSU and feeder cable . . . . . . . . . . . . . . . . . . . .35

5 Warranty � � � � � � � � � � � � � � � � � � � � � � � � � � � 36

DEVIreg™ 850 IV

3Installation instruction

1 User Manual

1�1 System overview

The DEVIreg™ 850 IV system is capable of keeping outdoor areas free of ice and snow.

The DEVIreg™ 850 IV can handle up to 2 independent areas, in any of the following

combinations:

• Single roof system

To keep gutters, valley gutters and down pipes free of

ice and snow, and to prevent icicles from causing dam-

age. It is also possible to use the roof system to reduce/

remove the snow weight from a roof. (Roof system A).

• Single ground system

To keep areas like parking areas, paths, garage entranc-

es, steps, ramps, roadways and bridges free of ice and

snow. (Ground systems A).

• 1 ground system and 1 roof system (combi system)

Consists of 1 single roof system A and 1 single ground

system B.

• 2 roof systems (dual system)

Consists of 2 x“Single roof systems (Aand B) ”.

• 2 ground systems (dual system)

Consists of 2 x“Single ground systems (Aand B) ”.

DEVIreg™ 850 IV

Installation instruction4

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 intelligent

sensors located in the heated terrain. Each sensor measures both temperature and mois-

ture, and the system turns the heating elements on and oﬀ 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 sen-

sors used for the DEVIreg™ 850 also provide the most exact readings when compared

with corresponding analogue systems. The result is optimum functionality and low en-

ergy consumption.

For more information about the ice and snow melting function of the DEVIreg™ 850,

please refer to: Appendix B: “How it works”.

A typical installation consists of:

• Controller unit (only one)

This is the device which, based on the measurements

from the sensors, decides when to heat the connected

area(s).

• Power supply (one or more)

The power supply delivers power to the controller unit

and the connected sensors.

• 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.

• 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.

DEVIreg™ 850 IV

5Installation instruction

1�2 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 Conﬁrm / 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 insolvable

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 tempera-

ture is below the melting temperature.

The DEVIreg™ 850 can simultaneously control up to 2 diﬀerent systems. These 2 systems

are referred to as System A and System B. The DEVIreg™ 850 gives the user the opportu-

nity to view the current status of the systems. The status can be shown in 2 diﬀerent ways.

DEVIreg™ 850 IV

Installation instruction6

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 ﬂipped 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 obtained by

making the entry to each system in the main

menu. The possibilities and settings for each

system are ﬁrst 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

Only visible when System B is installed !

 

 

 



  



 



 



  

 

 



  

 

 



  



DEVIreg™ 850 IV

7Installation instruction

1�3 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.

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 ﬂow 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 Oﬀ”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 Oﬀ”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.

DEVIreg™ 850 IV

Installation instruction8

1�4 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 aﬀect 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 eﬀects of your

actions. Reference: Appendix A: Installer menu

Roof system

Melting temperature

Changing the melting temperature will aﬀect 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 diﬀers, 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).

DEVIreg™ 850 IV

9Installation instruction

Ground system

Melting temperature

Changing the melting temperature will aﬀect 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-oﬀ 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 sensitive 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 diﬀers, 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.

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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