All installations and services must be performed by qualified service personnel.
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1. VESTIBULE: The furnace vestibule areas or burner compartment should be
inspected by removing front door of the furnace and looking for signs of
excessive heat such as discoloration of components, materials damaged
from rust or corrosion, soot or carbon build-up.
2. EXTERIOR OF FURNACES: The furnace exterior should be inspected for
signs of excessive heat such as discoloration of materials or damage from
rust or corrosion.
3. VENT CONNECTOR: The furnace vent pipe should be inspected for signs of
rust, corrosion pitting, or holes in the pipe. Check for leakage around seams
in pipe indicated by soot or condensate streaks.
4. ROOF JACKS: The furnace roof jack should be inspected for signs of rust or
corrosion, pitting or holes, signs of excessive condensation or moisture
leaking from roof jack.
D. FILTER LOCATION AND CLEANING
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CAUTION: To avoid injury from moving part, hot surfaces or electrical
shock, shut off the power to the furnace and allow the furnace to cool
before removing furnace access door to service filter.
The air filter should be inspected each month and cleaned when dirty. Clean the
filter by soaking it in water with a mild detergent and rinsing it with clean water.
Allow the filter to air dry before reinstalling it in the furnace. Cleaning the air filter
frequently may prevent airborne contaminants from going through the furnace
and depositing in the furnace, duct system, and interior of the building.
See Figure 10, in this section, for the location of the return air filter.
