A.O. Smith Copper Boiler DB-1480

Ignition System Safety Shutoff Devices Check

Close the pilot adjusting valve on the left side of the manifold

Did the main burners and pilot extinguish within four seconds?

Did the spark igniter on the pilot assembly begin sparking?

If System Does Not Operate Correctly

Discontinue gas supply by closing main manual shutoff

Call a qualified serviceman to correct the situation and describe the issue

Ensure all appliances remain connected to the common existing system

Seal any unused openings in the common venting system

Visually inspect the venting system for proper size and horizontal pitch

Check for blockage, restriction, leakage, corrosion, and other deficiencies

Close all building doors and windows

Close all doors between the appliance space and other spaces

Turn on clothes dryers and any appliance not connected to the common venting system

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

Ensure drain line is installed to direct discharge to a safe location

Is the manual gas control valve turned off?

Lift the lever at the top of the valve several times

Does the valve seat properly and operate freely?

Post-Inspection Safety Measures

Check for any signs of overheating

Is the gas supply functioning correctly?

Ensure the circulating pump is properly sized for the application

Oil the three oil cups (2 on the motor, 1 on the pump) as instructed on the oil tube

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

Is the lubrication process completed for all oil cups?