A.O. Smith Copper Boiler DW-1480

Main Burner Flame Characteristics

Check for complete combustion of gas

Ensure rapid ignition and carryover of flame across entire burner

Verify reasonably quiet operation during initial ignition, operation, and extinction

Check for no excessive lifting of flame from burner ports

Is there any accumulation of lint or foreign material restricting air openings?

Clear any lint or foreign material from air openings

Shut off all electric to the unit

Disconnect pilot line connection at main burner

Ensure the boiler is turned off and cooled down

Verify that all necessary tools and cleaning solutions are available

Check for contaminants in the system

Add the recommended percentage of cleaning solution to the system

Fire and circulate the system for about one hour

Flush the system clean with fresh water

Is the circulating pump properly sized for the application?

Oil the three oil cups as instructed on the oil tube supplied with the unit

Add 2 or 3 teaspoonfuls of No. 20 non-detergent motor oil in bearing oil cups

Add 10 or 12 drops of No. 20 non-detergent motor oil in motor oil cups

Was the lubrication process completed successfully?

Inspect all safety devices including low water cutoffs for proper operation

Low Water Cutoff Device Maintenance

Flush the low water cutoff device of the float type