flamco MeiTronic W10, User Manual

Page: 67 / 232

67 Service setting manual
EN
MIXING HEATING CIRCUIT
STAND-PIPE TEMPERATURE CALCULATION
The upper limit of stand-pipe temperature calculation is set with maximum stand-pipe
temperature - parameters S2.6 and S3.6, lower limit is set with minimum stand-pipe
temperature - parameters S2.5 and S3.5. Parameters S2.1 and S3.1 are used to set
the influence of room temperature deviation for the calculation of the stand-pipe
temperature, and with the parameters P2.2 and P3.2 you can adjust the parallel
shifting of the heating curve.
HEATING SWITCH OFF
If the calculated temperature of the stand-pipe isn‘t at least a few °C higher than the
room temperature, the heating is automatically switched off. If the room temperature
is not measured and when the outdoor temperature approaches the required
temperature, then the heating is automatically switched off. The temperature
difference at which the heating will switch off can be increased or decreased with
parameters S2.13 and S3.13. At automatic switch off of the heating, a temperature
of 4 °C is set for the temperature of the stand-pipe and the circulation pump is turned
off with delay - parameters S2.16 and S3.16. With parameters S2.4 and S3.4 other
possibilities for pump operation can be selected.
INTENSIVE - BOOST HEATING
With parameters P2.3, P2.4, and P3.3 and P3.4 you can define time and intensity of
intensive (BOOST) heating, which is activated at transition of time program from night
to day heating interval.
LIQUID FUEL BOILER PROTECTION
If the liquid boiler temperature drops below the minimum boiler temperature-
parameter P5.1, the mixing valve will gradually begin to close.
In the case, where liquid boiler temperature exceeds the maximum boiler temperature -
parameter S5.1, boiler protection is activated. At this point, the maximum boiler
temperature - parameters S2.6 and S3.6 is set for the calculated stand-pipe
temperature. The protection is deactivated, when the boiler temperature drops
below the maximum boiler temperature.
SOLID FUEL BOILER PROTECTION
If the solid boiler temperature drops below the minimum temperature- parameter
P5.2, the mixing valve will gradually begin to close. In the case, where solid boiler
temperature exceeds the optimal operation temperature, the controller proportionally
increases the calculated stand-pipe temperature. In this way, boiler overheating is
prevented and the surplus heat is discharged into the building. If the solid boiler
temperature exceeds the maximum boiler temperature - parameter S5.13, the mixing
valve gradually opens up to the maximum stand-pipe temperature - parameters S2.6
and S3.6. The protection is deactivated, when the boiler temperature drops below the
maximum boiler temperature.
BASIC DESCRIPTIONS OF
CONTROLLER OPERATION