Bedienungsanleitung Sorel XHCC S61 (Seite 36 von 44) (Englisch)

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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 when

the set ΔT is reached this does not switch on, 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.

Protective functions for Solar

The protection functions for Solar are not displayed in the “Protective functions” menu, but rather as a sub-menu in the

settings from the solar function, see " Solar " on page 35.

System protection

Priority protection function

The system protection should prevent an overheating of the components installed in the system through the forced shut down of

the solar circulation pump. If the value “AS Ton” on the collector has been exceeded for 1 Min. the pump will be turned off and not

turn on again in order to protect the collector, for example, from steam. The pump is turned on again when the value “AS Toff” on

the collector has not been met.

With the system protection (on), there are increased standstill temperatures in the solar collector and therefore an

increased pressure in the system. The operating manuals from the system components must be observed.

Collector protection

Priority protection function

The collector protection prevents the collector from overheating. A forced switching of the pump makes sure that the collector is

cooled through the storage. If the value “KS Ton” is exceeded on the collector, the pump will be turned on in order to cool the col-

lector. The pump is shut down if the value “KS Toff” on the collector is not met or the value “KS Tmax Sp.” on the storage or KS SB

Max on the pool is exceeded.

System protection has priority over collector protection! Even if the switch requirements for the collector protection are

present, the solar circulation pump is turned off once “AS T on” is reached. Normally the values from the system pro-

tection (depending on the maximum temperature of the storage or other components) are higher than the collector pro-

tection.

Recooling

In the system hydraulics with solar, excess energy is guided from the storage back to the collector with an activated return cooling

function. This only occurs if the temperature in the storage is greater than the value “Return cooling Tref” and the collector is at

least 20 °C colder than the storage and until the storage temperature has fallen below the value “Return cooling Tref”. For muti-

storage systems, the return cooling applies to all storage.

Energy is lost through the collector through this function! The recooling should only be activated in cases of exception,

with low heat acceptance, for example, during vacation.

Frost Protection

A 2-level frost protection function can be activated. In level 1, the controller turns on the pump every hour for 1 minute if the col-

lector temperature is below the set value “Frost Level 1”. If the collector temperature continues to decrease to the set value “Frost

Level 2”, the controller will turn on the pump without disruption. If the collector temperature exceeds the value “Frost level 2” by 2

°C, the pump will turn off again.

Energy is lost through the collector through this function! It is normally not activated for solar systems with antifreeze.

The operating manuals from the other system components must be observed.

Collector alarm

If this temperature at the collector sensor is exceeded when the solar pump is turned on, a warning or error notification is

triggered. There is a corresponding warning in the display.

Collector

Collector sensor

The collector sensor can be determined or changed here. The collector sensor set here is used for solar function ( Tmin collector,

∆T Solar,....) as well as all protection functions Solar (collector protection, system protection, ...).

Solar storage

The solar storage sensor can be determined or changed here. The solar storage sensor determined here is used for the solar

function ( Tmax storage, ∆T Solar,....).

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