I.C.E. GIDM-325 - Manual (Page 9)

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6. UNABLE TO ADJUST FIRE TO BURN CLEANLY.
A) Insufficient exhauster* draft.
B) Insufficient or too much fuel at supply.
C) Incorrect adjustment of air shutters at burner.
D) Insufficient combustion air available.
E) Burner blower wheel running backwards.
7. INSUFFICIENT HEAT BEING DISCHARGED INTO AREA.
A) Main fan blowers running backwards.
B) High limit switch setting too low or defective.
C) Burner locked in low fire position.
D) Ductstat setting improper or defective.
E) Field mounted thermostat and/or ductstats improperly wired.
*APPLIES TO POWER VENTED UNIT ONLY.
MAINTENANCE
Regular maintenance is necessary to ensure the efficient operation and long life of this unit. This maintenance should be
performed by, or supervised by, qualified service personnel. A maintenance schedule should be prepared for the unit
based on its application and location.
RECOMMENDED MONTHLY MAINTENANCE
1. Check for loose connections in the wiring.
2. Check the voltage at the unit while it is in operation.
3. Check motor amperage draws against rating plate values.
4. Inspect all contactors to ensure that they are clean and making good contact.
5. Check all fittings, valves and lines for leaks.
6. Check the burner; clean and adjust if necessary.
7. Check the flame sensor; clean if necessary.
8. Check the fuel supply pressure to the unit.
9. On gas fired units, check the manifold pressure.
10. Clean or replace air filters if necessary. Replace filters only with type equivalent to those supplied with the unit
by the factory.
11. Check all damper, linkages and damper actuators; adjust and tighten as required.
12. Check all belts; adjust or replace as necessary.
13. Check operation of all safety controls.
RECOMMENDED YEARLY MAINTENANCE
1. Perform the monthly maintenance recommended.
2. Inspect blower wheels and housing; clean if necessary.
3. Inspect all set screws on blower wheels and pulleys to ensure that they are secured to their respective shafts.
4. Check ignition spark and adjust gap if necessary.
5. Inspect and clean ignition electrodes.
6. Check flame supervisor relay.
7. Inspect all operating and safety controls; clean and replace if necessary.
8. Inspect the header box and secondary tubes through the access panels provided. Check for carbon deposits,
soot, scale, or rust; clean as required. Check condition of flue pipe.
9. Clean the primary combustion chamber.
10. Clean the burner.