MFC Series Boilers User Manual
CHAPTER 10 – MFC 8000/10000 DUAL FUEL BURNER
Page
108
of
170
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
OMM-0104_94
12/29/2015
Ph.: 800-526-0288
GF-146
Figure 10-3: Electrode Adjustment
10.3 Combustion Head setting
In addition to varying air flow depending on the output requested, the air gate valve servomotor
(4) in Figure 10-1 varies the setting of the combustion head by means of a lifting assembly.
This system allows an optimal setting even at a minimum firing rate.
For the same servomotor rotation, combustion head opening can be varied by moving the tie
rod onto holes 1-2-3, Figure 10-4.
The choice of the hole (1-2-3) to be used is decided on the basis of diagram in Figure 10-6
against the required maximum output.
Setting is pre-arranged in the plant for the maximum run (hole 3) in Figure 10-4.
When dealing with boilers featuring a strong back pressure, if air delivery is insufficient even
with the damper fully open, you can use a different setting to that illustrated in diagram in Figure
10-6; do this by moving the tie rod onto the next highest index, thus increasing the combustion
head’s opening and hence air delivery.
If combustion requirements require you to move spacer 1) in Figure 10-5 onto the first
or second
hole of the gear and, at the same time, the hinge is on the right, you need to fit the spacers 4) in
Figure 10-5 supplied with the burner.
Proceed as follows:
