DEVI devireg 550 User manual

DEVIreg™ 550
Electronic Intelligent Thermostat
User Guide
www.DEVI.com

Table of Contents
1 Introduction ............... 4
1.1 Safety Instructions ........ 5
2Settings ................. 6
2.1 Frost Protection ......... 8
2.2 Time and Day of Week ...... 9
2.3 Periods with Lowering of Temper-
ature ................ 10
2.4 Minimum Floor Temperature .. 14
2.5 Safety Lock ............ 15
2.6 Turning the Thermostat On and
Off ................. 16
3Saving Clock Settings (Backup Bat-
tery) .................... 17
4 Error Messages ............. 17
5 Warranty ................. 18
6 Disposal Instruction .......... 19
DEVIreg™ 550
User Guide 3

1 Introduction
DEVIreg™ 550 is an adaptive temperature controller special-
ly designed for floor heating systems by using the built-in
room sensor and an external floor sensor . It can, however,
also be used for other heating systems (e.g. power heating
units).
The thermostat will measure the radiant temperature from
the floor combined with the air temperature in the room to
compensate for the outside weather condition. This means
that DEVIreg™ 550 will automatically adjust the heating to
meet your comfort levels regardless of changing weather
conditions shortly after the settings are set and the desired
comfort temperature has been selected. A sudden temper-
ature drop in the room will also be detected. Instead of im-
mediately switching on the heating to compensate, infor-
mation is stored and a check will be made to detect wheth-
er this sudden drop of temperature may be caused by, for
instance, a window that has been opened for 10 minutes.
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4 User Guide

Even the programming of economy temperatures (i.e. low-
ering of temperature at night and when you are at work) is
very simple. A calculation of the heating start is not needed
to reach a specific temperature at a specific time. Just tell
the DEVIreg™ 550 when you want the comfort temperature,
and the rest will happen automatically; by identifying the
rate of heat loss from the room, DEVIreg™ 550 knows when
to start heating in order to achieve the selected tempera-
ture at the right time.
1.1 Safety Instructions
Please observe the following guidelines:
▪Do not cover the thermostat, e.g. by hanging towels or
similar items in front of it! This will impair the ability of
the thermostat to sense and adjust the room tempera-
ture correctly.
▪Do not spill liquids of any kind into the thermostat.
▪Do not open, disassemble, or tamper with the thermo-
stat in any way.
▪If the thermostat is installed in a place frequented by
small children, use the safety lock.
▪Do not interrupt the power supply to the thermostat.
▪The installation of the thermostat must be done by an
authorized and qualified installer according to local
regulations.
DEVIreg™ 550
User Guide 5

2 Settings
Using clear visual symbols, the display of the thermostat
shows active and selected functions, the actual tempera-
ture and the time:










1. Symbol for frost protection.
2. Numeric display of time, temperature, text, etc.
3. Day of week.
4. Flashing indication of actual time.
5. Symbol for setting of time and day.
6. Symbol for timer mode.
7. Symbol indicating that the floor is being heated.
8. Symbol for degrees.
DEVIreg™ 550
6 User Guide

9. Safety lock.
10. Economy periods (i.e. periods with lowering of tem-
perature).
Basic rules for changing thermostat settings
Accessing different
settings When you press and hold the but- ton for a certain number of sec-
onds, different layers of settings will
appear.
To increase a value Turn the button to the right (clock-
wise).
To decrease a value Turn the button to the left (counter-
clockwise).
To confirm a value
or go to the next
setting
Press the button once.
The unit of meas-
urement for tem-
perature
The temperature is either shown in
celsius degrees (5°C to 35°C) if a
room sensor is used, or as a scale
from 1 to 10 (where each step cor-
responds to approximately 5°C) if
only a floor sensor is used .
DEVIreg™ 550
User Guide 7

Network installation
If more DEVIreg™ 550 thermostats have been installed, they
may be connected in a network. If so, one of the thermo-
stats is defined as the master unit controlling the time, day
of week and lowering of temperature during economy peri-
ods for the other so-called slave units. This means that
changes to these settings must be made on the master
thermostat and will then automatically take effect on all
"slave" thermostats.
Please contact the electrician to find out if the thermostats
in your house are linked in a network and, if so, ask which
thermostat is configured as master unit.
2.1 Frost Protection
How to set the thermostat in frost protection mode
1. Turn the button counter-clockwise un-
til the temperature reaches +5°C (or 1
if a scale from 1 to 10 is used).
A frost symbol will now appear on
the display.
DEVIreg™ 550
8 User Guide

2.2 Time and Day of Week
The time and day of week is not set by default.
How to set the time and day of week
1. Press and hold the button for 3 sec-
onds.
The symbol for setting of time, the
time and the number of the day in the
week will be shown on the display
2. Turn the button to the right or left.
Every time the time passes 00:00, the day of week
number will go 1 day up/down depending on which
way you turn the button.
The number you choose will be the day of the current
day of the week, i.e. the numbers 1-7 do not corre-
spond to any specific day. For example, if today is
Tuesday and you select 2 on the display, Tuesday will
correspond to number 2.
3. Set the time correctly by turning the button.
DEVIreg™ 550
User Guide 9

4. When the right time is found, press the button once to
save the settings.
2.3 Periods with Lowering of Temperature
With DEVIreg™ 550 you have the possibility of either setting
the thermostat to keep a constant temperature, or let the
thermostat automatically switch between periods with a
lower temperature (also called economy temperature) and
periods with comfort temperature.
By default, the thermostat is set to the following comfort
periods:
▪Monday - Friday: 6:00 - 8:00 and 16:00 - 22:30.
▪Saturday - Sunday: 6:00 - 22:30.
In order to automatically switch between comfort tempera-
ture and economy temperature (e.g. when going to bed or
to work), the timer function is used.
The temperature will be lowered by a certain number of
degrees compared to the comfort temperature. By default
this number is preset to -5°C.
If the adaptive function is active (this is normally the case),
you only need to select the time at which you require com-
fort and economy temperatures. The thermostat will then
calculate when the heating should start in order to reach
the desired temperature at the specified time.
DEVIreg™ 550
10 User Guide

How to define comfort periods and economy periods
Note: The markings on the clock ring indicate periods with
comfort temperature and periods with economy tempera-
ture. The flashing point indicates the actual time of day. If
at any point you make a mistake, rotate the dial counter-
clockwise to the first segment and press the button to clear
the marking.
1. Press and hold the button for 6sec-
onds.
The symbol for timer setting and day
of week numbers are shown.
2. Turn the button clockwise until you
reach the day of week and start time
of the first comfort temperature peri-
od, e.g. day 1 at 06:00. Then press the
button once to confirm the start time.
DEVIreg™ 550
User Guide 11

3. Turn the button clockwise until you
reach the time at which the tempera-
ture should be lowered again, e.g.
07:30. Then press the button once to
confirm.
4. Turn the button clockwise until you
reach the time at which the comfort
temperature is required again, e.g.
15:30. Then press the button once to
confirm.
5. Turn the button clockwise until you
reach time at which the temperature
should be lowered again, e.g. 22:30.
Then press the button once to con-
firm.
6. Turn the button clockwise. When you pass the mid-
night hour (00:00), the settings for the following day
of the week can be made using the same procedure.
7. Repeat Steps 3-6 until period settings for all seven
days of the week are made.
DEVIreg™ 550
12 User Guide

8. Hold the button for 3 seconds to save your settings
and finish.
The display will automatically return to normal dis-
play.
How to turn the timer function on and off
1. Press the button once to turn the timer function on or
off.
You may for instance want to turn the timer function
off if a short extension of the comfort period is nee-
ded. You may also want to turn off the timer when a
lowering of the temperature is required for a longer
period, e.g. because of vacation.
When switched on, a timer symbol is
shown in the upper part of the display.
An unbroken clock ring indicates that
constant comfort temperature is
maintained, i.e. the timer function is
deactivated.
DEVIreg™ 550
User Guide 13

2.4 Minimum Floor Temperature
Note: Minimum floor temperature only applies if the ther-
mostat is configured to use a room and floor sensor (rFS
mode) and only during comfort periods.
1. Press and hold the button for 9 sec-
onds.
"MFt" (Minimum Floor Temperature)
appears on the display.
2. Turn the button until you reach the desired minimum
floor temperature. Then press the button shortly to
confirm.
The display returns to normal.
The floor temperature is now kept above the specified
lower limit.
DEVIreg™ 550
14 User Guide

2.5 Safety Lock
The safety lock is used for preventing undesirable changes
of the thermostat settings.
How to turn the safety lock on
1. Press and hold the button while turn-
ing it counter-clockwise until "COdE"
appears on the display. Then turn the
button clockwise to select "0033".
2. Press once to confirm and the safety
lock symbol appears on the display.
The safety lock is now on and the ther-
mostat settings cannot be operated
before the safety lock is switched off
again.
How to turn the safety lock off
1. Press and hold the button while turning it counter-
clockwise until "COdE" appears on the display.
2. Turn the button clockwise to select "0033".
DEVIreg™ 550
User Guide 15

3. Press once to confirm and the safety lock symbol dis-
appears from the display.
The safety lock is off and it is now possible to change
the thermostat settings again.
2.6 Turning the Thermostat On and Off
Note: The thermostat is on by default. Before you can
switch the thermostat off, the timer function must be deac-
tivated.
How to turn the thermostat off
1. Make sure the timer function is turned off (solid black
outer ring).
2. Turn the button counter-clockwise un-
til the temperature is below +5°C (or 1
if the temperature is shown as a scale
from 1 to 10) and keep turning until
OFF appears on the display.
How to turn the thermostat on
1. Turn the button clockwise until the temperature is
above +5°C (or 1 if the temperature is shown as a
scale from 1 to 10).
DEVIreg™ 550
16 User Guide

3 Saving Clock Settings (Backup Battery)
The backup battery saves time settings in case of power
failure and recharges automatically when the mains supply
is on again.
The thermostat must be connected to continuous power
supply. Do not interrupt the power supply to the ther-
mostat.
4 Error Messages
DEVIreg™ 550 has a built-in system that constantly checks
the heating system, the thermostat itself and a possible
network for any malfunctions.
When an error occurs, the outer ring on the thermostat dis-
play flashes and one of the numbers normally indicating
the day of week shows the error code.
No Error What to do?
2Configured as Mas-
ter, but another Mas-
ter unit detected.
Call an electrician (Only one
unit may be configured as a
Master).
3Configured as a
Slave, but cannot
find any Master unit.
Call an electrician (One unit
must be configured as Mas-
ter).
DEVIreg™ 550
User Guide 17

4The thermostat is
switched off because
of overheating.
Call an electrician (Let the
thermostat cool for a period.
Then enter basic set-up to
leave error mode).
5Sensor fault. Floor
sensor is short circuit. Call an electrician (Floor sen- sor must be checked and re-
placed if necessary).
6Sensor fault. Floor
sensor open circuit. Call an electrician (Floor sen- sor must be checked and re-
placed if necessary).
7Clock is not set. Set the clock.
5 Warranty
2
Y E A R
DEVIreg™ 550
18 User Guide

6 Disposal Instruction
DEVIreg™ 550
User Guide 19

DEVIreg™ 550
Danfoss A/S
Electric Heating Systems
Ulvehavevej 61
7100 Vejle
Denmark
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
www.DEVI.com
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products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes
being necessary in specifications already agreed. All trademarks in this material are property of the respective companies. DEVI and the DEVI logo-
type are trademarks of Danfoss A/S. All rights reserved.
VUFDA302 Produced by Danfoss © 07/2012