EAST COAST Temperature differential controller, Инструкция по эксплуатации и руководство по установке

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these cases, the solar circuit must be briefly activated
at regular intervals to transmit the actual heat from
the collector pipe to the sensor (T1). If the tube col-
lector function is activated, the controller automati-
cally switches the pump on every 30 minutes for 30
seconds.
The following display appears:
The lower temperature sensor, T1, is shown.
7.5 Holiday function
The holiday function is used to cool down a completely
heated storage tank again via the collector. The stor-
age tank can heat up too much, e.g. if no hot water
is extracted from the storage tank over an extended
period of time (holiday) of intense solar irradiance.
A completely heated storage tank subjects the solar
energy system to a higher thermal load and the solar
fluid can evaporate.
If the holiday function is activated, the storage tank
is cooled as follows: If the temperature in the storage
tank rises to 10 K below the set storage tank maximum
temperature, the controller attempts to discharge
the lower section of the storage tank to 35°C (e.g. at
night). To do so, the pump is automatically switched
on once the collector is 8 K colder than the storage
tank. Once the temperature difference between the
collector and the storage tank is only 4 K, the pump is
switched off again.
•
°
C
max
max
T1
D
T1
T1
T3
T2


°C °F
!