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EGULUS - SRS 3 Controller - www.re
ulus.
Special functions menu 7
D 7. 6 - Expansions menu 7.6
This menu can only be selected and used if additional options or expansions have been built into the
controller.
The associated supplementary installation, mounting and operation instructions are then included with the
specific expansion.
D 7. 7 - Heat quantity
menu 7.7 / 7.7.1 - 7.7.5
A simple heat metering function for basic system control can be activated in this menu. Set the type and
concentration of the antifreeze fluid and its flow rate read from the mechanical flowmeter (in the pump station).
A deviation value for heat metering can be also set by modifying „∆T Offset”.
Remember that the hydraulic variant does not change. Settings in this menu are used for heat
calculation only and should be set according to the real system. Resulting data is only approximate
value for function control!
Heat metering menu 7.7.1
Activate or deactivate the heat metering function.
Settings range: On / off / default setting: Off
AF type menu 7.7.2
Adjust the type of antifreeze used in the system. Kolekton Super Plus is of propylene type.
Setting range: Ethylene / Propylene / default setting: Ethylene
Glycol portion menu 7.7.3
Adjust the percentage of glycol that has been used in the system. Kolekton Super Plus has a concentration of 50 %.
Setting range: 0-60 % / default setting: 40 %
Flow rate menu 7.7.4
Adjust the flow rate read from the flowmeter (in the pump station). The flowmeter shows flow rate in l/minute.
For l/hour just multiply the number with 60 (e.g. 4 l/min = 240 l/hour).
Setting range: 10-5000 l/h / default setting: 500 l/h
∆T Offset menu 7.7.5
Calculation of heat metering is based on the temperature of the collector and storage where measuring takes
place.
For a proper calculation, the temperature of the feed and return lines of the solar system shall be used. The
temperatures of the tank sensor and of the solar return line are usually almost identical. Possible deviations of
these temperatures can be compensated using the value ΔT Offset .
Example: Displayed collector temp. 40° C, displayed storage temp. 30° C, ΔT is 40-30=10 °C. Measured
flow temp. 39° C, measured return temp. 31° C, ΔT is 93-31=8 °C. This means an offset setting of -20 %
(Displayed ΔT 10K, actual ΔT 8K which is by 20 % less => -20 % correction value.)
Setting range: -50 % to +50 % / default setting: 0 %
D 7.8 - Start aid function menu 7.8 / 7.8.1 - 7.8.3
With some vacuum tube collectors, it may occur that the sensor is often not at the hottest location. This
function turns on the solar pump for a while which helps moving the heated solar liquid to the sensor for real
temperature check.
When the start help is activated, the following sequence is carried out:
If the temperature at the collector sensor increases by the value specified under „Increase” within one
minute, then the solar pump is switched on for the set „Purging 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.
In Regulus tube collectors the sensor sheath is placed in optimum position inside the collector and
the start help function is not needed.
Caution
Caution
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