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Furnace Maintenance
FIG. 7 TYPICAL INSTALLATION
(Cont.)
The floor or furnace base must be in good physical
condition. For Upflovv Furnace with a bottom return
the floor or base area around the furnace must form
a seat (no sagging, cracks defects etc.) to prevent air-
from being pulled in from furnace area, or any defect
area must be sealed between floor or base and
furnace.
Remove the front panel and use a flashlight to inspect
the visible part of the heat exchanger, burners and ig-
nitor. Check for loose soot and give particular atten-
tion to obvious deterioration from corrosion or other
sources. Check for any signs of condensate leakage
inside furnace cabinet.
tf soot or deterioration is found or if there is evidence
of condensate leakage inside furnace DO NOT
OPERATE FURNACE.
Calt a qualified service technician.
/ AIN BURNER 8L PILOT
FLAMESI! onthly
Allow furnace to run approximately 1 0 minutes then
inspect the main burner flames and pilot flame (ex-
cept furnaces with Hot Surface Ignition).
MAIN BURNER FLAMES should be stable, soft and
blue, (dust may cause orange tips or they may have
,wisps of yellow but they must not have solid yellow
tip_). They should extend directly upward from burner
without curling, floating or lifting off. They must not
touch the sides of the heat exchanger.
Con'tact a qualified service agency at once if an ab-
normal flame appearance should develop.
FIG. 8 MAIN BURNER FLAME
PILOT FLAME should surround 3/8"' to 1/2" of the
ignitor/sensor tip.
FIG. 9 PILOT FLAME
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