All installations and services must be performed by qualified service personnel.
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
The air filter should be inspected each month and cleaned when dirty. 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 9, in this section, for the location of the return air filter.
43
