TROUBLE- SHOOTING
Continued
OBSERVED | POSSIBLE |
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PROBLEM | CAUSE |
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| REMEDY | ||
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Burner does not light | 2. | Burner orifice diameter | 2. | Replace burner orifice. | ||
after ODS/pilot is lit. |
| is too small. |
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(continued from page | 3. | Inlet gas pressure is too | 3. | Contact local natural gas | ||
21) |
| low. |
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| company. |
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Delayed ignition of | 1. | Manifold pressure is too | 1. | Contact local natural gas | ||
burner |
| low. |
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| company. |
| 2. | Burner | orifice | is | 2. | Clean burner (see Clean- |
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| clogged. |
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| ing and Maintenance, |
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| page 20) or replace burner |
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| orifice. |
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Burner backfiring | 1. | Burner | orifice | is | 1. | Clean burner (see Clean- |
during combustion. |
| clogged or damaged. |
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| ing and Maintenance, | |
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| page 20) or replace burner |
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| orifice. |
| 2. | Burner damaged |
| 2. | Replace burner. | |
| 3. | Defective gas regulator | 3. | Replace gas regulator. | ||
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Yellow flame during | 1. | Not enough air |
| 1. | Check burner for dirt and | |
burner combustion |
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| debris. If found, clean |
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| burner (see Cleaning and |
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| Maintenance, page 20). |
| 2. | Defective gas regulator | 2. | Replace gas regulator. | ||
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Slight smoke or odor | 1. | Residues | from manu- | 1. | Problem will stop after a | |
during initial opera- |
| facturing processes |
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| few hours of operation. | |
tion |
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Heater produces a 1. | Turning control knob to |
whistling noise when | HIGH position when |
burner is lit. | burner is cold |
2. | Air in gas line |
3. Air passageways on heater blocked
4. Dirty or partially clogged burner orifice
1.Turn control knob to LOW position and let warm up for a minute.
2.Operate burner until air is removed from line. Have gas line checked by local natural gas company.
3.Observe minimum instal- lation clearances (see Figure 2, page 6).
4.Clean burner (see Clean- ing and Maintenance, page 20) or replace burner orifice.
22
Continued