SL280UHV BURNER, COMBUSTION AIR INDUCER ASSEMBLY & | |||
| HEAT EXCHANGER REMOVAL |
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| gasket |
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| pressure switch |
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rollout switch | flue transition |
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burner box assembly | ignitor | collector box | heat exchanger |
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| orifice plate |
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sensor |
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gasket | combustion air inducer |
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| burners |
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| manifold and gas valve |
| retention rings |
burner box cover plate |
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| cross over |
FIGURE 39
9 − Remove screws from both sides, top and bottom of | 13− To clean the combustion air inducer visually inspect and | |
vestibule panel. | using a wire brush clean where necessary. Use com- | |
10− Remove heat exchanger. It may be necessary to | pressed air to clean off debris and any rust. | |
spread cabinet side to allow more room. If so, remove | 14− Reinstall heat exchanger in vestibule. (Replace the | |
five screws from the left side or right side of cabinet. | ||
five screws in the cabinet from step 10 if removed). | ||
See figure 41. | ||
15− NOX units only − replace NOX inserst. | ||
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11− Back wash using steam. Begin from the burner opening | 16− Reinstall collector box and combustion air assembly. | |
on each clam. Steam must not exceed 275°F. | ||
Reinstall all screws to the collector box and combustion | ||
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12− To clean burners, run a vacuum cleaner with a soft brush | air inducer. Failure to replace all screws may cause | |
leaks. Inspect gaskets for any damage and replace if | ||
attachment over the face of burners. Visually inspect in- | ||
necessary. | ||
side the burners and crossovers for any blockage | ||
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caused by foreign matter. Remove any blockage. Figure | 17− Reinstall burner box, manifold assembly and burner box | |
39 shows burner detail. | cover. |
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