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FIGURE 3
REAR RETURN AIR FILTER BOX
With Top or Side Filter access
SIDE
FILTER
ACCESS
PANEL
FOUR FILTERS
(Filters may also be installed
through top of filter box)
TOP
FILTER
ACCESS
PANEL
G24−200
UNIT
FILTER
BOX
FIGURE 4
FRONT FILTER
ACCESS PANEL
G24−200
UNIT
FOUR FILTERS
(Filters may also
be installed
through side of
filter box)
SIDE FILTER
ACCESS PANEL
BOTTOM RETURN AIR FILTER BOX
With Front or Side Filter access
Burners (Both heat sections)
Inspect the burners and burner flame at the beginning of
each heating season. If necessary, clean the burners as
indicated below:
1 − Turn off the electrical and gas supply to the furnace.
2 − Remove the burner box top.
3 − Remove the burner retaining bracket.
4 − Remove the burners.
5 − Clean the inside of each burner with a bottle brush as
shown in figure 5.
CLEANING BURNERS
BOTTLE
BRUSH
BURNER
FIGURE 5
6 − Check the electrode gap using appropriately sized
twist drills or feeler gauges. Gap should be between
0.110 and 0.140 inches (2.79 to 3.56mm).
7 − Replace the burners and the burner retaining brack
et. Make sure that the burners are properly seated in
their slots in the tray and that each burner and man
ifold orifice is aligned properly.
8 − Reinstall the burner box top.
9 − Carefully check all piping connections (factory and field)
for gas leaks. Use a leak detecting solution or other pre
ferred means.
IMPORTANT
Some soaps used for leak detection are corrosive
to certain metals. Carefully rinse piping thoroughly
after leak test has been completed. Do not use
matches, candles, flame or other sources of igni
tion to check for gas leaks.
10 − Restore electrical power and gas supply to the furnace.
Follow lighting instructions on the front of the unit. Check
the appearance of the burner flame, burner pressure,
gas flow, and temperature rise. If necessary, make ad
justments. See the other unit adjustments section.
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