Install Instructions

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I. Sequence of Operation. See Figure 16. If boiler fails
to operate properly, see Troubleshooting Guides in
Service Section.
J. Check pilot burner flame. See Figure 17. Flame
should be steady, medium hard blue enveloping 3/8 to
1/2 inch of sensing probe.
Figure 16: Sequence of Operation
Figure 17: Pilot Burner Flame
Figure 18: Main Burner Flame
K. Check main burner flame. See Figure 18. Flame
should have clearly defined inner cone with no yellow
tipping. Orange-yellow streaks should not be confused
with true yellow tipping.
L. Check thermostat operation. Raise and lower
temperature setting to start and stop boiler operation.
M. Check ignition control module shut-off. Disconnect
ignitor/sensor cable from Terminal 9 (SPARK). Gas
valve should close and pilot and main burners should
extinguish. If burners do not shutdown, determine
cause of malfunction. Replace necessary items and
check operation.
N. Check low water cut-off (if so equipped).
1. Adjust thermostat to highest setting.
2. With boiler operating, open drain valve and slowly
drain boiler.