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Operating manual for the auroMATIC 620 Controller 0020094404_0046
Thermostat valves and room thermostat
Thermostat valves on all heating elements exactly main-
tain the room temperature set once. You can adjust the
room temperature to suit your individual requirements
and ensure economical operation of your heating instal-
lation using the thermostatic valves in combination with
a weather-compensated controller.
This is how a thermostat valve works: When the room
temperature rises above the value set on the sensor
head, the thermostatic valve closes automatically. When
the room temperature falls below the set value, the
thermostatic valve opens once more.
Do not cover regulators
Do not cover your regulators with furniture, drapes or
similar objects. The room air must circulate unhindered.
Covered thermostat valves can be equipped with
remote sensors and thus still work.
Installing a weather-controlled compensator
Weather compensators regulate the heating supply tem-
perature according to the outside temperature. Thus it
is ensured that heat in excess of what is required at the
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 thermostat val-
ves are the most economical form of heating regulation.
Ventilating residential spaces
During the heating period, open windows only for venti-
lation and not for temperature regulation. A brief,
forced change of air is more effective and energy-
saving than windows that are kept open for a long time.
During ventilation, close all thermostat valves in the
room
or set the room regulator to minimum tempera-
ture.
These measures
guarantee adequate air circulation
without unnecessary loss of energy and cooling off.
How to make positive energy savings:
Activate the energy-saving function when airing the
room or during temporary absences.
Adapt the post-heating times to your daily routine.
b
Caution!
Material damage caused by freezing!
Parts of the system can freeze if the frost
protection is delayed for too long.
Setting the frost protection delay is a job
for the heating engineer!
Programme your holiday periods to avoid unneces-
sary heating during extended absences.
Set the hot water temperature (for hot water) to the
lowest value necessary just to cover your heat
demand.
If possible, set the Eco mode for all heating circuits
and have the frost protection delay time adjusted by
your heating engineer.
The heating is completely switched off overnight in the
Eco mode. If the outside temperature falls below +3 °C,
the set back temperature is invoked again after the pre-
settable frost protection delay time. The frost protec-
tion delay time can be extended for houses with good
thermal insulation.
Optimising solar gain
By using the sun or free solar energy you will be preser-
ving the environment and reducing your energy costs.
Solar energy is used to heat up the solar cylinders (e.g.
DHW cylinders). The energy cost savings are represen-
ted by the solar gain in kilowatt hours.
When the temperature in the solar collector is higher
than that in the lower zone of the solar hot water sto-
rage tank by a defined amount, the solar pump switches
on and the thermal energy is transferred to the drinking
water in the cylinder. The solar gain is limited by the
maximum cylinder temperature and the solar circuit
protection function, which is intended to prevent over-
heating of the solar cylinder or the solar circuit.
If the solar radiation is too low, the solar hot water sto-
rage tank is post-heated by the boiler. The post-heating
is enabled according to the specification for the hot
water target value and the time window for hot water.
When the temperature in the upper zone of the solar
hot water storage tank is less than the hot water target
value by 5°C, the boiler is switched on in order to heat
up the drinking water in the cylinder to the desired hot
water target value. When the hot water target value is
attained, the post-heating boiler is switched off. Post-
heating by the boiler only takes place during the pro-
grammed time window for hot water. The solar gain can
be optimised in the operator level by means of the
options described in the following.
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9 Energy saving tips
48


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