Table 1 | System and General Troubleshooting | ||||
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| PROBLEM | POSSIBLE CAUSE |
| REMEDY |
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| Home does not | Improper distribution of heat. |
| This Is unlikely to be a furnace problem. Balance duct system with dampers. |
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| heat evenly. |
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| Supply air | Airtlow blocked or dirty air filter. |
| Clean or replace air filter. |
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| temperature too |
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| hot. | Insufficient airflow. |
| Check all dampers. Open closed dampers including registers in unused rooms. Check |
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| system temoerature rise. If temcerature rise Is too hiah &Deed UD blower fan. |
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| Supply air | Excess airtlow. |
| Check sYStem temoerature rise. Slow down blower fan is necessary. |
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| temperature too | Excessive duct losses. |
| Check supply air ductwork. 5ea11eaky joints and seams. Insulate ductwork if |
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| cool. |
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| necessary. |
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| Supply air | Fan control "fan on" setting too low. |
| Increase "fan on" time. Register air deflectors may help. |
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| temperature too |
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| cool during first |
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| rnomentsof | Excessive duct losses. |
| Check supply air ductwort<. 5ea11eaky joints and seams. Insulate ductwork if |
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| furnace cycle. |
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| necessary. |
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XIV. Maintenance &Annual Inspection
1)Replace Delevan nozzle with exact capacity, angle and pattern as supplied.
2)Replace vestibule mounted oil filter with
3)Replace condensate neutralizer with part number
4)Remove air handler assembly (slide out) and inspect the bottom (upflow configuration) of the secondary heat exchanger. Loosen accumulated foreign matter with soft brush and vacuum clean.
5)Perform all routine safety switch function checks.
6)Perform combustion analysis as described on page 18 Burner Adjustment.
7)Do not remove rear access panel of heat exchanger. Internal cleaning of the primary or secondary heat exchangers are not required (unless satisfactory combustion analysis cannot be achieved).
!CAUTION
The ceramic combustion chamber located in the primary heat exchanger should not be handled once it is cured at startup. Structural damage will occur, if handled and if broken the furnace will be rendered inoperative.
NOTE:
If the secondary heat exchanger turbulators have a light coating of soot, this is normal and will not affect the efficiency of the furnace.
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