surface with fine sandpaper, wipe it down to remove dust, and apply two thin coats of paint. For best results, use the same paint that was originally used on the furnace, which is available in spray cans. See your dealer for details. 10.1.6 Heat exchangers care Heat exchangers must be cleaned thoroughly at the end of every heating season. During summer, the air in basements is damper and with minimal air circulation within the furnace, it can mix with creosote and/or sooth deposits in the exchangers to form an acid that could accelerate the corrosion process and induce premature decay of the steel. Corrosion damages are not covered under warranty. Smoke pipe and exchangers must be inspected regularly during the heating season. Access to the exchangers is easy and does not require tools. 1. Unscrew the wing nut (B) and remove the washer (C) on the exchanger access door.
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