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Figure 22: Operating Instructions
G. Check main burner fl ame. See Figure 23. Flame
should have clearly defi ned 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
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 fl ame. See Figure 24. Flame
should be steady, medium hard blue enveloping 3/8 to
½ inch of sensing probe.