Inner Door Gasket Replacement - Bradford White D4403S*F(BN Service Manual

Residential flue damper
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Inner Door Removal Procedure (cont'd)
Step 7.
Inspect both inner doors for any of the following imperfections: tears,
missing material, cracks, dirt or debris, lack of adhesion to the inner door, material left
on combustion chamber, or any other imperfections that will inhibit a proper seal.
If any of the imperfections above are present, replace the inner door gasket following
the Inner Door Gasket Replacement Procedure. If not, replacement of the inner door
gaskets is not necessary.
Inner Door Gasket Replacement Procedure
If the information in these instructions is not followed exactly, a fire or explosion may re-
sult causing property damage, personal injury, or death.
Step 1.
Completely remove all gasket and adhesive residue from the right and
left side inner doors, as needed.
Step 2.
Using RTV sealant, apply a 1/8" bead to secure
the inner door gasket to the inner door sections. Refer to the
illustration
for
proper
configuration in the flange area of the inner door.
flange section first, and this will help to achieve the proper
overlap position.
Recommended pattern for RTV sealant

Inner Door Gasket Replacement

WARNING
application.
Note
Gasket Overlap must be as
shown + 1/32
Gasket Overlap must be as
shown + 1/32
the
overlap
Set the
Expanded view
Enlarged
view of
flange area
Page 33
33

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