Lennox Cooling Unit LCH072

Spray the coil steadily and uniformly from top to bottom with water

Ensure pressure does not exceed 900 psi

Ensure angle does not exceed 45 degrees

Ensure nozzle is at least 12 inches from the coil face

Check for fractures between the fins and refrigerant tubes

Reduce pressure and work cautiously to prevent damage

Clean condenser coil with detergent or commercial coil cleaner

Inspect the evaporator coil for dirt and debris

Clean the coil using mild detergent or commercial coil cleaner

Flush the condensate drain with water

Ensure the following are not wet during flushing

Is the area around the coil clean and dry?

Inspect monthly during the cooling season.

Inspect monthly during the cooling season.

Shut off power supply and gas to unit

Remove the mullion on the right side of the heat section

Disconnect pressure switch air tubing from combustion air inducer port

Remove and retain screws securing combustion air inducer to flue box

Clean inducer wheel blades with a small brush

Ensure the unit is not in operation before starting the filter replacement.

Verify the correct filter size from table 32.

Remove the temporary filters from the unit

Install the approved filters according to local codes or appropriate jurisdiction

Are the new filters installed correctly and securely?