Condensing Water Heater Service Manual 46 100000354
KB Series Component Replacement Instructions
RU80i/e, RU98i/e
Heat Exchanger
15.Remove 9 screws to separate the air box from rear of heat exchanger. (FIGURE 9)
FIGURE 9
CAUTION
Use extreme caution! The following step will expose the burner. The burner is
a downward firing ceramic cassette and is very fragile.
16.Remove 15 screws around the perimeter where heat exchanger joins burner assembly (the screws will have a white
coating, these screws can only be used once, do not use again, the kit will include new screws). (FIGURE 10)
FIGURE 10
Screws (Located through the perimeter 15 total)
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