
November
2013
TROUBLE SHOOTING (CONT.)
D) A buildup of ashes in the ash trough can restrict the exhaust of combustion air.
E) A buildup of ashes on top of the grates can restrict combustion air.
F) Ensure that the chimney has adequate draft (.06” w.c. minimum).
G) Ensure that no other appliances are connected to the chimney.
H) A “cold” chimney could force cooler exhaust gases back into the furnace. Verify that the chimney
is properly installed and insulated.
I) Check for possible chimney “down draft” from taller surrounding trees, buildings or objects. It might be
possible to correct with a chimney cap.
6) PROBLEM: EXCESSIVE SMOKE OR FLAMES COMING OUT OF LOADING DOOR DURING REFUELING
A) Fully open the smoke damper rod prior to opening the fuel loading door. B) Open fuel door 1/2”,
then wait 30 seconds for draft to increase prior to fully opening the door (SLOWLY). C) Chimney could have i
insuffi
cient draft:
1. Ensure that chimney draft is .06” w.c. or greater.
2. Check length of fl ue pipe to chimney. The appliance should be located within 6 feet of the chimney.
3. Ensure that the chimney cap is not too close to the top of the chimney, restricting air fl ow.
4. Clean chimney and chimney connector.
5. Raise chimney height to increase draft.
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