Tmax Storage
Switch off temperature at sensor X:
If this value is exceeded at the specified sensor, the controller turn off the affiliated pump or the valve. If this value on the sensor is
undershot and the other conditions are fulfilled, the controller will turn on the pump or the valve.
Temperature values which are set too high can lead to scalding or damage to the system. Scalding protection must be
provided by the customer!
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
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 there is still no normal
switching condition 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 par-
ticular 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.
Protective Functions
See " Protective functions for Solar " on page 39
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,....).
Solar bypass
Use a relay to switch a bypass valve or a bypass pump. With this function, the flow can be guided past the storage if the flow tem-
perature at the bypass sensor is less than in the storage to be filled.
Variant
In this menu, you can set if the flow is guided through the bypass with a pump or a valve.
Bypass sensor
The reference sensor for the bypass function to be placed in the flow is selected in this menu.
Booster
This function can control an additional booster pump for filling a resistance system.
Charge time
When solar charging begins, the connected booster pump fills the system for the time set here.
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