3. PROGRAMMING THE THERMOSTAT
3.1 A brief introduction to programming
•
Programming means the setting of switching times and selection of
accompanying temperature levels. The device can be programmed for
a one-week period. Its operation is automatic, and it will cyclically repeat
the programs that have been keyed in. For each day, beside 1 fixed
(
PROG
)
switching time, 6 adjustable
(
PROG
‒
PROG
)
switching times can be set.
For all switching times a different temperature can be assigned between
5 and 35°C, in 0.5°C increments. The temperature set for a given switch
will remain valid until the start time of the next switch. Accordingly, the
thermostat will keep the temperature set for switching time
PROG
until
switching time
PROG
is reached. After switching time
PROG
the temperature
selected to switch
PROG
will be valid until the time of the next switch
(
PROG
)
.
•
The start time of switch
PROG
is
, which cannot be changed, only
its temperature can be adjusted. So under the factory default settings, the
thermostat performs only one switch (
PROG
) every day, which is in effect
from
until
the next day.
Note:
Setting just one switch for a day (factory default setting) is reasonable
only if a constant temperature is needed all day. (For example, if for every
weekday a constant 16°C, and for every weekend a constant 22°C is
needed.) Otherwise, from both a comfort and an energy-efficiency point
of view, it is recommended to activate more than one switch for each day.
Furthermore, it is advised that a comfort temperature is used only those
times, when the room or building is in use, since every 1°C decrease of
temperature saves approximately 6% energy during a heating season.
As opposed to common belief, keeping a flat warm requires more energy
than heating it up. (When using a stove, more gas is needed to keep a pan
of water boiling than to just keep it warm.)
•
The
PROG
‒
PROG
switches are deactivated by factory default (their
start time is
), but they can be activated at need. Their start time
can be freely set between
and
at 10-minute intervals given
the constraint, that their start time should be in increasing order and a
difference of at least 10 minutes should be between them. This minimum
10-minute difference is going to be preserved even if a previously activated
switch is modified, in order to avoid co-occurring or overlapping switches.
In such a case, the device automatically increases the start time of the
affected switches until a difference of at least 10 minutes between them is
reached. If the start time of a switch would be later than
because of
this automatic modification, then that switch is deactivated instead.
•
In order to enter the programming mode, press the “
SET
” button and hold
it down and press the “
PROG
” button, too.
During the programming the
values being adjusted are flashing on the display. The modification
of these values can always be done using the large
and
buttons.
The confirmation of a value is always done by pressing the
“
PROG
” button, after which the next value can be adjusted. The program
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