Burnham MMII manual Operating Instructions

Figure 22: Operating Instructions

D.Follow Operating Instructions to place boiler in operation. See Figure 22.

E.Sequence of Operation. See Figure 21. If boiler fails to operate properly, see Troubleshooting Tree on pages 26-27.

F.Check pilot burner flame. See Figure 24. Flame should be steady, medium hard blue enveloping 3/8 to ½ inch of sensing probe.

G.Check main burner flame. See Figure 23. Flame should have clearly defined inner cone with no yellow tipping. Orange-yellow streaks should not be confused with true yellow tipping.

H.Check thermostat operation. Raise and lower temperature setting to start and stop boiler operation.

I.Check domestic hot water (tank) aquastat operation. Raise and lower temperature setting to start and stop boiler operation. Tank aquastat should be set at least

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