Primary Air; Burner Setup - Honeywell Hauck MEGASTAR MS-25 Instructions Manual

S. PRIMARY AIR
Primary air is used for improved mixing at low fire on LP fuel, and for the optional low pressure
atomization of oil fuel. Eclipse offers a TBA blower for primary air supply. The primary air blower
is supplied with an outlet flange to mate to the air connection on the burner. Piping between the
blower and the burner is not supplied with the burner. Once installed, verify that no air leaks exist
between the blower and the burner. If leaks exist, burner efficiency will be reduced.
T. BURNER SETUP
These settings are for initial setup only. Final settings will have
to be readjusted for required operating conditions.
Use of individual control motors allows the fuel valves to be characterized via the BCS7000 control
panel to maintain a tighter air/fuel ratio over the entire burner operating range. Starting points for
fuel control valves are shown in Figure 19 and in the individual burner capacity and performance
data sheets. Final settings of the fuel valves can then be set at multiple control points using the
BCS7000 control panel.
Nominal Settings (see Figure 19)
1. All control motors have a travel of 90°.
2. The low fire starting frequency for the combustion air blower is 16Hz. Always be sure that
the combustion air blower is operating at 16Hz prior to pilot and main flame ignition. During
operation, the blower frequency will need to modulate between 16 and 60Hz as required to
maintain process temperature.
3. Natural Gas Valve. Low fire is adjusted at the main gas valve. Adjust using the gas
metering orifice (see Orifice Meter Capacity Chart in Figure 4). The natural gas valve has a
nominal travel from the off position (low fire) to 9 (high fire) on the valve position indicator
dial plate.
4. Oil Metering Valve . The valve has a nominal travel from position 2 to 11 (see capacity and
performance data sheets).
Adjustment of this equipment by unqualified personnel
can result in fire, explosion, severe personal injury, or
even death.
WARNING
NOTE
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