All installations and services must be performed by qualified service personnel.
49
Figure 9, OPA Heat Exchanger Clean-out Ports and Related Components
Remove the clean-out covers. Also, remove the burner compartment cover, the
burner, and the burner mounting plate. When removing the clean-out covers, special
care must be taken not to damage the gaskets. Should any of the gaskets separate,
show evidence of cracks or breaks, or otherwise be unable to provide the necessary
seal, the gasket must be replaced before reattaching the clean-out covers, refer to
Figure 10.
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