15
Midco International Inc.
8471 95
For 24V Burner Models
Adjust the high
fi
re by turning the span knob on the
24V burner SCEBM-1 board.
Measure the
manifold pressure and refer to the
Chart 2 and 3 for the 24V
burner to match the manifold pressure
to the desired
fi
ring rate.
Note:
Burners are not always set up to maximum capacity. Refer to the “Firing Rate” portion of
the Burner Rating Label or the Label of the heating equipment for the actual
fi
ring rate.
-
Modulate the burner to high
fi
re by applying a 10V DC input signal.
-
Verify that the manifold pressure is the same as marked on the Burner Rating Label(s) for
the actual
fi
ring rate.
__________________________________________
VI Initial
Start-up/Adjustment
for 120V and 24V
Continued
V1
V2
5
4
1.5
1
2.5
2
3.5
3
4.5
0.5
0
0
1500
1000
500
Manifold
Pressure
(Inches W.C.)
Firing Rate (mbtu/hr)
E -
High Fire
Adjustment
Continued
ii - Adjustment 24V
Chart 2
Manifold Pressure vs. Firing Rate
24 V models V1 and V2 Burners
Chart 3
Load Line Pressure vs. Blower Speed
24V models V1 and V2 Burners
V1
V2
8
6
1
2
4
3
5
0
0
300
250
200
150
100
50
Load Line
Pressure
(Inches W.C.)
Blower Speed (hz)
7
Part 1 Installation