Operation manual for M RS 420 ESTYMA control unit
18
AMOUNT OF AIR, LAMBDA SENSOR – POWER TEST MODE
The combustion process requires the supply of air, the amount of which depends
on the type of fuel and the power of the heating unit. Therefore, the optimal
amount of air should be set for each type of fuel and each burner power level.
This should be done by the person who starts up the control unit. The parameters
are saved in the non-volatile memory of the control unit.
In order to set the optimal amount of air, one should:
- set the type of fuel corresponding to the fuel to be used,
- turn on the control unit,
- enter the POWER TEST submenu and run the “power test mode”.
- set the amount of air for 20, 40, 60, 80, 100% of the burner power. The values
will be calculated by approximation method from the selected curves. See Figure
11.
If the control system includes the optional Lambda module, oxygen values should
be set in a similar fashion for the various burner power levels. The parameters
should be set in line with the boiler manufacturer’s specifications, or on the basis
of the results of waste gas analysis at the different burner power levels.
If the blower power is controlled using the optional Lambda sensor module, the
blower power may be adjusted within the range of ±10 adjustment units. This
relationship is shown in Figure 12.
NOTE!!!
Turn off the chimney sweep mode once you have completed the
adjustments.
When adjustments are made in the power test mode, automatic burner power
control is deactivated so as to allow measurements and analyses at constant
burner power.
