Burnham SM-6 manual Typical Pilot Flame Main Burner Flame

6CHECK PILOT FLAME. Flame should be a blue medium hard flame enveloping approximately 3/8” of the end of the sensing probe, see Figure 14.

7CHECK THERMOSTAT OPERATION. Raise and lower thermostat setting as required to start and stop burners.

8CHECK HIGH LIMIT CONTROL. Allow boiler to operate until burners are shut down by limit control (approximately 235°F). If burners are not shut down by limit control, determine cause of malfunction. Replace control if necessary and check its operation.

9CHECK IGNITION SYSTEM SAFETY SHUTOFF DEVICE. Remove pilot ground lead from electrical junction block. If burners are not shut down by module, determine cause of malfunction. Replace module or gas valve if necessary.

10MAIN BURNER FLAMES should have a clearly defined inner cone, see Figure 15, with no yellow tipping. Orange-yellow streaks caused by dust should not be confused with true yellow tipping.

11CHECK LWCO OPERATION (if so equipped). Drain boiler water below LWCO set point. Burners should shutdown. If burners do not shut down determine cause of malfunction and repair.

12WARNING – BEFORE INSTALLATION OF THE BOILER IS CONSIDERED COMPLETE, THE OPERATION OF THE BOILER CONTROLS SHOULD ALL BE CHECKED, PARTICULARLY THE LOW WATER CUT-OFF AND THE HIGH LIMIT CONTROL.

Figure 14

TYPICAL PILOT FLAME

Figure 15

MAIN BURNER FLAME

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