Vaillant ecoTEC VU Instructions d'exploitation télécharger pdf (Page 20)

Energy saving tips

20 Operating instructions ecoTEC plus 0020116701_00

6 Energy saving tips

Fitting a weather compensator

Weather compensators regulate the heating supply temper-

ature according to the outside temperature. Thus it is

ensured that heat in excess of what is required at that

moment is not generated. In addition, desired heating and

set-back phases (e.g. at night) are automatically turned on

and off by using integrated time programmes.

Weather compensators combined with thermostatic radia-

tor valves are the most economical form of heating regula-

tion.

Operating the heating system in energy-saving

mode

> Reducing the room temperature at night and in your

absence.

The simplest and most reliable way is to be able to reduce

the room temperature using the controller with individually

selectable timer programmes.

> At such times, set the room temperature approx. 5°C

lower than during full heating times.

If the room temperature falls by more than 5°C, you are

not saving any additional energy because increased heating

capacity would then be required for the next full heating

period. Only for longer absences, e.g. during holidays, is it

worthwhile to further lower the temperatures.

Caution.

> In winter, make sure that adequate frost protection is

maintained (¬Section 5.8).

Room temperature

> Set the room temperature only as high as would be

enough for your comfort level.

Each extra degree would cause an increased energy con-

sumption of about 6%.

> Adjust the room temperature according to the purpose

of use of the room.

For example, normally, bedrooms or rooms that are seldom

used are heated to 20°C.

Uniform heating

> Heat all of the rooms in your dwelling to the same level

and according to their use.

If you only heat one room or individual rooms in your dwell-

ing, the adjacent unheated rooms will also be heated

through walls, doors, windows, roofs and floors and this

heating will be unregulated. The capacity of the radiators

for the heated rooms is insufficient for this type of opera-

tion. The heated rooms are then not heated sufficiently (the

same effect is caused if doors between heated and

unheated rooms (or rooms that are heated to a limited

degree) are left open).

Thermostatic radiator valves and weather compen-

sators or room thermostats

Thermostatic valves on all radiators maintain the room tem-

perature exactly once it is set. You can adjust the room

temperature to suit your individual requirements and

ensure effective operation of your heating system using

thermostatic valves in combination with a room thermostat

or a weather compensator.

This is how a thermostatic valve works: If the room temper-

ature rises above the value set on the sensor head, the

thermostatic radiator valve shuts off automatically and

when the temperature drops below the defined value, it

opens again.

Do not obstruct the controller

> Do not obstruct your controller with furniture, curtains

or other objects.

The controller must be able to record the circulating room

air unhindered. Covered thermostatic radiator valves can be

equipped with remote sensors and thus still work.

Ventilating living rooms

> During the heating period, open windows only for venti-

lation and not for temperature regulation.

A brief ventilation boost is more effective and energy-sav-

ing than windows that are kept open for a long time.

Close all the thermostatic valves in the room during ventila-

tion.

> If you have a room thermostat, set it to the minimum

temperature.

This guarantees adequate exchange of air without unneces-

sary loss of energy and cooling off.

Setting the operating mode

> In warmer seasons, when the dwelling needs no heating,

turn the heating to summer mode.

The heating mode is then switched off. The boiler and sys-

tem remain ready for operation for the hot water produc-

tion.

Setting the hot water temperature

> Only heat the warm water up to the extent that is neces-

sary for use.

Any further heating results in unnecessary power consump-

tion and hot water temperatures of more than 60°C also

lead to increased limescale reduction.

Switching on comfort mode (only VUW):

Comfort mode immediately supplies you with hot water at

the required temperature, without you having to wait for

the water to heat up. For this, the hot water heat exchanger

is kept at a preselected temperature level.

If you do not need hot water for a long period, it is recom-

mended to turn off comfort mode to save energy further.

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Vaillant ecoTEC VU Instructions d'exploitation Page 20

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