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The user needs to set a time for the pump to allow it to pump water through the piping system, so that after
turning on the tap hot water appears.
Downtime
The downtime should be as long as possible, but the water in the pipes cannot cool down too much. The user
should not feel uncomfortable when using HW.
HW rundown during summer
The pump loading the dispenser during SUMMER is delayed by this parameter. The purpose of this activity is to
discharge the boiler. After heating the dispenser to the desired temperature, the burner turns off and the
dispenser pump will work during rundown time in the summer.
Buffer pump
The regulator is prepared to work with the buffer. The documentation contains a hydraulic system diagram that
uses the buffer as a thermal energy store. If the control in such a system is to be correct, the Service must
activate buffer cooperation and set the remaining parameters correctly. A description of the available settings is
below.
Operation activation
Turning on the parameter is a piece of information for the regulator that the heat buffer is built in the hydraulic
system. In this system, the boiler loads the buffer to an appropriate temperature and then the accumulated
heat is used in the CH installation. This allows the most efficient use of fuel because these are the conditions in
which the greatest efficiency of the burner can be obtained. In this example, boiler control differs from
operating without the buffer. What is important, the boiler does not often start up and runs in long cycles,
mostly at maximum output. The boiler temperature is automatically set to a given value (
maximum
temperature - 2°C
) during buffer loading.
Important:
If the system does not include the buffer, the parameter should be disabled.
Note:
For operation with the heat buffer, it is recommended to use the PID DISABLED mode for the burner.
Upper temperature
The temperature decrease below the set value at the upper buffer sensor will trigger the buffer heating process.
The buffer pump will turn on when the temperature in the boiler will be higher than the minimum boiler
temperature and also higher than the measured temperature at the upper buffer sensor by at least 2C. This
prevents corrosion in the boiler as a result of dewing. On the other hand, the buffer is not cooled down by the
boiler when there is no appropriate temperature in the boiler.
Note: This setting is ignored after selecting the
Automatic upper temperature
option.
Lower temperature
If the lower buffer sensor measures the temperature that is higher than the set value, the buffer heating process
will be finished.
NOTE:
