7
© 2010 OJ Electronics A/S - EHT Haustechnik GMBH
Model FRTD 903
English
Introduction
The thermostat can switch on your heating system at predetermined
times on different days of the week. For each day of the week, you
can set individual temperatures for 4 different periods, called events.
Lowering the temperature when the home is unoccupied will reduce
your energy costs without reducing comfort.
The thermostat comes with a default schedule suitable for most
homes. Unless you change the settings, the thermostat will operate
in compliance with the default schedule.
Furthermore, the thermostat features an adaptive function that
automatically changes heating period start times so as to ensure
that the required temperature is reached at the set time. After three
days the adaptive function has learned when the heating must be
switched on.
First time settings
The first time you switch the interrupter ON “
I
”, language, time and
date must be set. The menu will automatically guide you through the
process.
• Choose your language with the Up and Down buttons and
confirm with
OK
.
• Set the actual hour and press the
OK
button. Then set the mi-
nutes. Press
OK
.
• Set the actual date: year, month and day. Confirm the settings
with the
OK
button.
The thermostat is now ready for use and will control your heating
in accordance with the pre-programmed 4-event schedule, see
Factory settings
.
Navigation buttons
Power interrupter
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General operation
The interrupter button allows you to turn the thermostat on “
I
” and
off “
0
” by sliding the button up and down. When the thermostat is
switched off “
0
”, the relay disengages. All settings, including time
and date, will be remembered.
The thermostat is intuitively operated using the navigation buttons.
The function of each button is indicated above the button in the
display.
Back
In various parts of the menus and submenus you will find the
Back
menu item.
Use
Back
to return to the last step.
Exit
Returns to initial dispay.
Operation mode
The thermostat features three different modes of temperature control:
Auto mode
Select Auto if you want the temperature to be controlled automa-
tically via the 4-event schedule.
Manual mode
Select Manual to cancel the programmed 4-event schedule (e.g.
during holidays) and to set the required temperature manually. You
may, for example, want to adjust the temperature to 5°C for frost
protection while you are away.
• Press
Manual
, confirm with
OK
and choose the required tempera-
ture.
Comfort mode
A
Select Comfort to set a temporary comfort temperature
(so-called party mode) for a single event.
• Press
Comfort
, confirm with
OK
and choose the required tempe-
rature. Then enter the required duration of comfort mode.
After the set time has elapsed, the thermostat will automatically
revert to
Auto mode
.
Please note: Comfort mode is a temporary manual setting that will
be automatically cancelled by the next event in the programmed
4-event schedule.
Thermostat setup menus
The menu allows you to select the following options:
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4-event settings
Allows you to have the temperature con-
trolled automatically in accordance with a
program of your own choice. You can select
temperature settings for four different events
during the day:
When you wake up in the morning
When you are away at work
When you come home
When you go to bed at night
The thermostat is pre-programmed with a 4-event schedule for easy
and economic heating control, see
Preset schedule
under
Factory
settings
. The schedule can be easily changed in the following way:
1. Press the
OK
button to activate the 4-event settings display.
2. Choose the days for which you want to change the settings,
Mon-Fri
or
Sat-Sun
using the up or down button. Press
OK
.
3. Now select the time and temperature for each daily event in the
program. Press
OK
and set the start time for the event concerned.
Confirm with
OK
. Set the temperature for this event and confirm
with
OK
.
4. After setting the required events, select
Exit
in the menu to return
to the initial display.
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User settings
In the user settings menu you can change the
following items:
• Time and date
• Child lock
• Display settings
• 4-event schedule
• Energy monitor
