MFC Series Boilers User Manual
CHAPTER 10 – MFC 8000/10000 DUAL FUEL BURNER
P
OMM-0104_94
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
Page
121
of
170
GF-146
Ph.: 800-526-0288
12/29/2015
Maximum Gas Pressure Switch Adjustment
10.17.2
Adjust the maximum gas pressure switch shown in Figure 10-15 after having performed all other
burner adjustments with the maximum gas pressure switch set to the end of the scale.
Adjusting Maximum Gas Pressure Switch
1. With the burner operating at MAX output, reduce the adjustment pressure by slowly turning
the adjustment dial anticlockwise until the burner locks out.
2. Then turn the dial clockwise by 0.8” WC and repeat burner firing.
3. If the burner locks out again, turn the dial again clockwise by 0.4” W.C.
Figure 10-15: Maximum Gas Pressure Switch
Minimum Gas Pressure Switch Adjustment
10.17.3
Adjust the minimum gas pressure switch shown in Figure 10-16 after having performed all the
other burner adjustments with the pressure switch set at the start of the scale.
Adjusting the Minimum Gas Pressure Switch
1. With the burner operating at MAX output, increase adjustment pressure by slowly turning
the relative dial clockwise until the burner locks out.
2. Then turn the dial anti-clockwise by 0.8” WC and repeat burner starting to ensure it is
uniform.
3. If the burner locks out again, turn the dial anti-clockwise again by 0.4” W.C.
Figure 10-16: Minimum Gas Pressure Switch
