A.O. Smith 120 trough 500 - Manual (Page 38)

BTR TANK TYPE HEATERS
SERVICE HANDBOOK
A.O. Smith Water Products Service Handbook
Irving, Texas ©2000 Training Department
37
STEP 15 MAIN BURNER TEST
Note: BTR series 108 and 109 implemented a new main burner stamping process –
burners appear the same as illustrated.
STEP 15. MAIN BURNER TEST. Visually check for main burner.
IF THEN
The main burner ignites: • Sequence is complete
The main burner does not ignite • Go to step 16