| | Modu-Fire®Gas-Fired Boiler | Maintenance |
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•Check the cabinet pressure for a minimum of 0.3" w.c.
•Check burner is clean (refer to Section 5.2).
Ignition Failure
In the event the pilot flame is not detected by the UV scanner during the 10 second trial-for-ignition period (Step 9), the pilot gas valve and spark igni- tion are de-energized. At this time a safety lockout occurs which de-energizes all outputs from the pro- grammer except Terminal A, which is connected to the "Flame Failure" indicator. A manual reset of the programmer (located inside the control panel) is required.
Flame Failure
In the event of a main flame failure during a firing period, the main fuel valves are de-energized and the programmer immediately goes into "lockout" mode. If flame failure occurs and the indicator is illuminated, the programmer must be manually re- set.
WARNING
If any “Manual Reset” limit device trips,
DO NOT
reset without determining and correcting the cause.
(Flame safeguard, high or low gas pressure, high temperature limit, stack temperature.)
