Bedienungsanleitung Sorel LTDC (Seite 42 von 50) (Englisch)

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Factory settings

All settings can be reset, returning the controller to its delivery state.

All of the controller‘s parametrization, statistics, etc. will be lost irrevocably. The controller must then be commissioned once

again.

Time & Date

Serve to set the current time and date.

For time-dependent functions such as circulation and anti-legionella and the evaluation of system data, it is essential that the

time is accurately set on the controller. Please note that the clock continues to run for about 24 hours if the mains voltage is inter-

rupted, and afterward must be reset. Improper operation or an incorrect time may result in data being cleared, recorded incor-

rectly or overwritten. The manufacturer accepts no liability for the recorded data!

Starting aid

For some solar systems, in particular for vacuum tube collectors, the measurement recording on the collector sensors may be too slow or

imprecise, because the sensor is often not on the warmest spot. With an activated starting aid, the following procedure occurs: If the tem-

perature on the collector sensor increases within a minute by the value defined under “increase”, the solar circulation pump will be turned on

for the set “purging time” so that the medium to be measured is transported to the collector sensor. If there is still no normal switching con-

dition through this, there will be a 5 minute block time for the start wizard function.

This function should only be activated by a technician if problems occur with the measurement recording. Observe in particular

the instructions from the collector manufacturer.

The menus "Purging time" and "Increase" are only displayed when the starting aid function is set to "On".

Purging time

If the temperature on the collector sensor increases within a minute by the value defined under “increase”, the solar circulation pump will be

turned on for the set “purging time” so that the medium to be measured is transported to the collector sensor. If the set ΔT is not reached, a 5-

minute circulation pause time for the starting aid function will apply.

Increase

If the temperature at the collector reaches within a minute the value defined, the solar pump is turned on for the duration of the purging time.

Global radiation sensor

With the global radiation sensor, a start-up operation can be triggered depending on the solar

radiation. If the set radiation intensity exceeded at the sensor, the start-up aid is activated and the solar pump is switched on for the set rins-

ing time. If within this time no start condition is reached, the start-up function is blocked for the set time.

Radiation sensor

The sensor input can be defined here, to which the global radiation sensor is connected.

Radiation intensity

If the radiation intensity set here is exceeded in watts See " Starting aid " on page 42per m² at the radiation sensor, the starting aid function

will be triggered,

Blocking time

Here a blocking time in minutes can be defined. Within this the starting aid function is disabled.

Daylight saving time

If this function is activated, the controller automatically changes to winter time or summer time (DST, Daylight Savings Time).

Eco Display Mode

In Eco Display Mode the backlight of the display is switched off if no buttons are pushed for 2 minutes.

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Sorel LTDC Seite 42

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