This function is available from REG and RegConfig firmware version 4.32 onward within the ELETTRA/SOLAR page of RegConfig.
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A REG-DIN-8 regulator;
Two-way ON/OFF valves on the input DHW pipe to each Producer (numbers 1, 2 and 3 in the following diagram);
A flow meter (number 5 in the following diagram);
A REG2VFS interface to enable communication between the REG and the flow meter:
PHOTO TBD
Currently, the REG2VFS interface communicates with the Grundfos VFS sensor, the interface is provided with cable and connector to precisely connect to the Grundfos VFS. For further information about the REG2VFS, please refer to the data sheet.
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A diagram is shown to better explain parameters P01, P02, P03, and P04; in red the flow rate trend over time, in blue the thresholds (multiples of P01) and in yellow the hysteresis referring to each threshold (always equal to P02):
PHOTO TBD
Instant DHW Producers cascade status and output setting
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Active generators number: is the number of producers whose valve is open;
First active generator: is the number of the producer whose valve is open first, in the image below it is the sixth producer;
Current flow rate and Current temperature: are the values read by the VFS in l/min and °C respectively;
Generator activation Threshold [l/min]: shows the threshold value that must be exceeded for another producer to be added. This value depends on how many generators are already active. Assuming that P01 is 15 l/min: if only a producer is active, the threshold will be 15 l/min, if 2 producers are active the threshold will be 30 l/min etc.
Generator deactivation Threshold [l/min]: shows the threshold value that must be exceeded (downwards) before removing a producer. This value depends on how many generators are active: if 3 generators are active, the threshold will be 27 l/min [P01*(number of active producer - 1) - P02], if 2 generators are active the threshold will be 12 l/min [P01*(number of active producer - 1) - P02], etc. If only one producer is active, this value will be negative if P02 is greater than zero.
Add/Removal Filter Timer [s]: reports the countdown (if started) of parameters P03 and P04;
PHOTO TBD
Within the REGDIN OUTPUT page (or IOA / IOB OUTPUT in case expansions are needed as the REG system also manages other actuators within the heating/cooling system), it is possible to set the outputs to be assigned to the 8 DHW producers valves:
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