MAINTAIN GASKET MATERIAL
As part of the annual maintenance of your furnace it is
important to inspect the gasket material (1” rope gasket)
around the inside of the firing door and ash pan door to
ensure proper sealing of the firebox.
The gasket material keeps added air from getting into the
firebox, which could lead to over-firing of the furnace and
causing excessive draft.
Fire Door Gasket
Ash Door Gasket
Maintenance
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