Danfoss EFIT 540 Bedienungsanleitung
INSTRUCTION
Thermostat EFIT 540/550
Table of contents
Introduction................................................................... 3
Introducing Thermostat EFIT 540/550 .......................... 4
How to use your Danfoss heating system .................... 6
Daily operation .............................................................. 7
Setting the clock & day ................................................. 10
Timer programming....................................................... 11
Warranty........................................................................ 16
Do not cover the thermostat, e.g. by hanging towels etc.
directly in front of it !
088L0358 - 01.01 09-2003
2
Introduction
You have purchased a Thermostat EFIT 540/550, which
forms an integrated part of a Danfoss system.
Danfoss has developed the Thermostat EFIT 540/550 to
make your floor heating an even more environmentally
correct way of heating your home.
Thermostat EFIT 540/550 will work dynamically with both
the room and floor temperature in order to give you the
highest possible comfort in the most economical way.
Thermostat EFIT 550 ONLY:
Furthermore, Thermostat EFIT 550 will take a few days to
optimise the use of the heating system, but it does not stop
there. The Thermostat EFIT 550 will continue to learn from
the room and thus constantly improve its performance and
consequently your comfort and economy.
We wish you many years of comfort with your new Danfoss
system.
3
Introducing Thermostat EFIT 540/550
Thermostat EFIT 540 is an advanced temperature
controller, with a built-in Timer.
Thermostat EFIT 550 ONLY:
Thermostat EFIT 550 is an adaptive temperature controller,
specially designed for floor heating systems.
The Thermostat EFIT 550 will measure the radiant comfort
from the floor combined with the comfort from the air
temperature in the room to offset the outside weather
condition.
We as human beings perceive comfort as the combined
effect of the radiant heat from the floor and air temperature
in the room. By continually measuring this combined effect,
it is therefore possible to maintain the highest possible
comfort level.
A higher floor radiant temperature can produce a sense of
comfort with a lower air temperature which can result in
lower running costs without reducing comfort levels.
4
All this means that as soon as you have set your
Thermostat EFIT 550 at your desired comfort temperature,
you do not have to do anything else. Thermostat EFIT 550
will automatically adjust the heating to meet your
requirements for comfort and economy, no matter how the
weather is changing outside.
This also means that Thermostat EFIT 550 is capable of
detecting a sudden temperature drop in the room. Instead
of switching the heating on to immediately compensate,
the Thermostat EFIT 550 uses the information stored then
checks to see if this is caused by e.g. the effects of a
window opened for 10 minutes !
Even the programming of economy temperatures (i.e.
during the night) is very simple. You do not have to cal-
culate how much earlier the heating should start in order
to reach a specific temperature at a specific time. Just
tell the Thermostat EFIT 550 when you want the comfort
temperature and the Thermostat EFIT 550 will take care of
the rest. By learning the rate of heat loss from the room, the
Thermostat EFIT 550 knows when to start heating in order
to achieve the selected temperature at exactly the right
time.
5
How to use your Danfoss heating system
The function of the button
The button can be turned both ways, is indicated by
or the button can be pressed/held, is indicated by
View of symbols in the display
Symbol for frost
protection
Symbol for Timer On
Numerical display
for time, tempera-
ture, text, etc.
Flashing point for
actual time
Weekdays
Indication of
AM/PM time at
12 hour clock
Symbol for Timer programming
Symbol for
setting of clock
24 hour clock-ring
which shows
actual time and
timer programme
Symbol for degrees
Symbol for
temperature
below set-point
6
Daily operation
Thermostat EFIT 540/550 has two temperature settings:
Constant temperature with the timer off.
Can be used e.g. as ‘Party Mode’ or for
constantly lowering the temperature when
going on holiday. This is indicated by a
continuous clock ring ...
Timer setting with automatic switching
between economy and comfort tem-
perature.
Clock and timer must be set !
Is indicated by the timer symbol
and the clock ring showing the timer
programme ...
(Display will indicate same temperature during both com-
fort and economy periods. But temperature will, during
economy periods, be lowered according to the set-back
level.)
7
You want to raise the temperature ...
Turn clockwise to raise the tempera-
ture.
You want to lower the temperature ...
Turn counter-clockwise to lower the
temperature.
You want to switch on or off the timer
function ...
Press the button to switch on the
timer.
Press again to switch off the timer.
Economy set-back
between 0000 and 0700
The clock is between
1000 and 1030
8
The marking on the clock-ring indicates
when comfort temperature is chosen
and when economy set-back is
switched on. A flashing point indicates
the actual clock (every half hour).
If the temperature is lowered to mini-
mum (+5ºC), a frost symbol will appear
in the display, indicating that the ther-
mostat will maintain minimum +5ºC in
the room for frost protection.
If the temperature is turned below
+5ºC, the thermostat will switch off.
(Only possible with the timer off).
When the temperature is raised again
the thermostat will automatically
switch on.
If the Thermostat EFIT 540/550 only
uses a floor sensor, the display will
not show the actual temperature (5º to
35º), but a scale from 0 to 10.
9
Setting the clock & day
You want to set/change the clock ...
(The clock is not set from the factory)
Hold the button for 3 sec.
The clock can now be set forward or
back by turning the button to the right
or left respectively.
Changing the week day is done by
continuing to change the time until it
passes 0:00, either way.
The numbers 1-7 do not correspond to
any specific days, so you can choose
which day of the week is No. 1 etc.
When the clock is set correctly, press
the button to save the settings.
3 sec.
10
Timer programming
You want to set/change the
economy set-back programme ...
(The timer is not set from the factory)
Hold the button for 6 sec.
The programme for economy
set-back can now be edited.
First, turn the button to choose the
weekday which you want to
programme ...
Press the button to start the
programming ...
6 sec.
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1
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