Crown Boiler CHC68-96 用户手册

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The heat exchanger may also be cleaned through the flue pipe connection. With the 
furnace turned off and at room temperature, carefully remove the vent connector and 
the heat exchanger flue pipe, if equipped, to inspect and clean the heat exchanger. 
 
The inner radiator of the heat exchanger may be cleaned from the inside of the 
combustion chamber. This involves removal of the burner and the burner mounting 
plate from the heat exchanger. 
 
Using a portable light source with a mirror inserted through and into the heat exchanger, 
check for an accumulation of soot, scale, and particulate matter on the walls and in the 
base of the drum, or on the floor of the combustion chamber. If a significant 
accumulation is present, it should be removed. Use a flexible wire brush to loosen the 
deposits on the heat exchanger walls. Remove any loose foreign material using a 
vacuum cleaner. 

 

Replace all gaskets, if removed, with new (unused) gaskets. Reassemble the burner 
mounting plate, burner flange, and new gaskets in the reverse order they were 
removed. A rubber mallet, or equivalent tool, may be useful for reinstalling the caps in 
the cleanout tubes. 
 

At least once a year, thoroughly inspect the heat exchanger flue pipe, the vent 
connector, the chimney, or vent, and the barometric damper for signs of sagging, loose 
connections, excessive corrosion, and deterioration. Clean, repair, or replace any 
components for continued safe and proper operation of the furnace.