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Activate or deactivate the heat metering function
Settings range: On/off /default setting: Off
Adjust the type of glycol that has been used in the system.
Settings range: Ethylene/Propylene /default setting: Ethylene
Adjust the percentage of glycol that has been used in the system.
Settings range: 0-60% /default setting: 40%
Adjust the fl ow rate according to the system.
Settings range: 10-5000 l/h /default setting: 500 l/h
Since the calculation of the heat metering is based on the temperature of the collec-
tor and storage where measuring takes place, a possible deviation from the fl ow and
return temperature can be compensated with this value.
Example: Displayed collector temp. 40° C, measured fl ow temp. 39° C, displayed stor-
age temp. 30° C, measured return temp. 31° C means a setting of -20% (Displayed
T
10K, actual T 8K => -20% correction value)
Settings range: -50% to +50% /default settings: 0%
With some solar systems, especially with vacuum tube collectors, it may occur that the
measurement value acquisition at the collector sensor occurs too slowly or too inac-
curately because the sensor is often not at the hottest location. When the start help is
activated the following sequence is carried out:
If the temperature at the collector sensor increases by the value specifi ed under
“Increase” within one minute, then the solar pump is switched on for the set “Purg-
ing time” so that the medium to be measured can be moved to the collector sensor. If
this still does not result in a normal switch-on condition, then the start help function is
subject to a 5-minute lockout time.
Start help setting range: on, off/default setting: off
Purging time setting range: 2 ... 30 sec./default setting: 5 sec.
Increase setting range: 1°C....10°C/default setting: 3°C/min.
7.8 Start aid function
7.7.1 Heat metering
7.7.2 AF type
7.7.3 Glycol por tion
7.7.4 Flow rate
7.7.5 ∆T Offset
Caution
This function should only be activated by a specialist if problems arise
with acquisition of measurement values. In particular follow the instruc-
tions from the collector manufacturer.
Special functions
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