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Avisualcheckof themainburnerandpilotflames
shouldbe madeatthestartof theheatingseason
and againin mid-season.The mainburnerflame
shouldhaveaweltdefinedinnerbluemantelwitha
lighterblueoutermantel,Checktheburnerthroats
andbumerorificesforlintordustobstruction.(Figures
19 and 20)
LIGHT BLUE OUTER MANTEL
FIGURE 19]
\
iFIGURE 20]
The pilot flame should envelop _8 to ½ inch of the tip
of the pilot thermocoupte, ignition/sensing electrode
or mercury sensor, (Figure 21)
PZLOT FLAME
MAKN :BURNER
/
FIGURE I8]
To adjust the pitot flame, remove the pilot adjustment
cover screw (Figures 14-16 on pages 15-16) and
turn the inner adjustment screw counterclockwise
f_'_ to increase or clockwise _"_ to decrease
pilot flame, Be sure to replace cover screw after
adjustment to prevent possible gas leakage,
The burners and pilot should be checked for signs
of corrosion, rust or scale buildup. The area around
the boiler must be kept clear and free of combustible
materials, gasoline and other flammabte vapors and
liquids.
The free flow of combustion and ventilating air to
the boiler and boiler room must not be restricted or
blocked,
It is recommended that a qualified service agency
be employed to make an annual inspection of the
boiler and heating system, They are experienced in
making the inspections outlined above, and, in the
event repairs or corrections are necessary, trained
technicians can make the proper changes for safe
operation of the boiler,
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