Installation guide

035-20530-001Rev.B(0804)
replaced.
FIGURE 8: Deformed heat exchanger
d. Burn Through. See Figure 9.
FIGURE 9: Burned through heat exchanger
While you are feeling the inside surface, you should also
check the integrity of the rivets that secure the overflame baf-
fle to the heat exchanger drum. You can check the rivets by
pushing against each of the four (4) mounting legs. If any of
the rivets are missing, the heat exchanger will need to be
FIGURE 10: Overflame baffle located in top of heat
exchanger assembly (cut-away view).
D, Corrective Actions
1. Heat Exchanger cracked, deformed or burned
through or 1 or more overflame baffle pop rivets are
missing. Replace heat exchanger with 37323713001
Replacement Heat Exchanger. Follow instructions
provided with kit.
2. If heat exchanger burn through has resulted in dam-
age to the furnace casing insulation and/or a breach
in the furnace casing, you will need to contact the
DGAT program at: 1-888-665-4640 or on line at dgat-
[e-mail] to receive authorization to
replace furnace.
3. Heat Exchanger exhibits normal discoloration pattern
with no defects.
a. Install DGAT Program Kit 37323712001. Follow
instructions in Part 3.
Part 3: DGAT Program Kit Installation
A. Install Heat Exchanger Liner
FIGURE 11: Remove pressure switch tube.
FIGURE 12: Remove burner inlet pan 12 screws as
marked and remove burner inlet pan.
4 Unitary Products Group