Maintenance; Advice For Saving Energy; Suitable Room Temperature; Eliminating Heat Or Cold Sources - Saunier Duval SDH 18-025 NW Mode D'emploi

MAINTENANCE

8

Advice for saving energy

8.1

Suitable room temperature

Set the room temperature to an appropriate value to ensure
physical wellbeing, comfort and to comply with the legal
standards if required. Each degree above this value significantly
increases the energy consumption.
The temperature must also be suitable for the specific use
being made of the room: the temperature of empty rooms and
bedrooms does not have to be the same as the main living
room.
8.2

Eliminating heat or cold sources

In the event that there are any heat (in cooling mode) or cold
(in heating mode) sources that could be eliminated please do
so (e.g. a window or a door which are not properly closed). This
will ensure that the unit consumes less energy.
8.3

Operation in heating mode (heat pump)

Your unit, when operating in heating mode, acts as a heat
pump, i.e. it takes heat from the outside (via the outdoor unit)
and releases it inside (via the indoor unit). Nevertheless,
a conventional heating system produces heat purely by
consuming energy. Therefore, heating a room using a heat
pump is far more economical than using conventional heating
(radiators, heaters, boilers, etc.).
8.4

Ambient temperature when absent

During heating mode, an economic saving is made by keeping
the room temperature at approx. 5ºC lower than the normal
temperature. A reduction which exceeds these 5º C does not
provide any further energy savings since greater heating power
is required for consecutive periods of operation in normal
operating conditions.
It is only worth reducing the temperature even further in the
event of prolonged absences, e.g. during holidays.
During winter when protection against freezing must be
guaranteed.
SDH18-NW-U_EN - 05/14 - Saunier Duval
8.5

Uniform heating

Often in a house only the one room is heated. In addition to
the surfaces which form the perimeter of this area, i.e. the
walls, doors, windows, ceiling and floor, the adjacent rooms are
cooler than the room temperature therefore: thermal energy is
unintentionally lost. It is therefore difficult to adequately heat the
room and an unpleasant feeling of cold is felt (the same occurs
when leaving open doors which separate heated areas and
unheated areas in a limited way).
This is false economy: the heating is on and, nevertheless,
the ambient temperature is not pleasant. Greater comfort and
a more reasonable operating mode are achieved by heating
all the rooms in a house uniformly, taking into account the use
being made of each room (the temperature of empty rooms and
bedrooms does not have to be the same as the main room, as
long as they are not significantly cooler than the main room).
8.6 Reduction in consumption during night
hours (Sleep function)
Your unit has a SLEEP function which allows the temperature
to be modified automatically in relation to the predetermined
values (in heating mode the temperature decreases slightly; in
cooling mode the temperature increases slightly) during sleep
setting period. Thus, apart from greater comfort being provided
there is also a reduction in the electricity consumption. For more
details regarding the SLEEP function, please consult section
7.7.1).
8.7 Reduction in consumption with
programmed operating time (Timer
function)
By using the TIMER function you can adjust the operation start
time of your unit. Therefore, it is possible to programme the
operation of your unit to make it function only when required
and thus achieve more economic operation.
8.8

Appropriate maintenance of the unit

A unit in perfect condition operates efficiently, taking maximum
advantage of the energy it consumes. Ensure that your unit is
correctly serviced (for more details please consult section 10).
In particular, make sure that the filters are kept clean and that
the air inlets and outlets are not obstructed either on the indoor
or outdoor unit. Failure to do so will lead to an increase in
energy consumption.
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