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2.2.8 Smoking Causes and Troubleshooting
To reduce the likelihood of smoking when opening the door, set the combustion air controls
to the right (accelerated) before opening the door. Your fireplace has been designed and tested
to provide smoke free operation. Occasionally, there may be a small amount of smoking upon
lighting the fire, until the chimney heats up but this should not continue. If the fireplace
continues to smoke it is probably for one of the following reasons:
A. Negative pressure in the house
As the fire burns, air goes up the chimney. This air must be replaced through leakage into
the house or through the fresh air kit. When operating the ENERZONE SOLUTION
2.5ZC, open a nearby window temporarily to check if there is adequate air supply
replacement. If opening a window solves the problem, the house is under negative
pressure.
B. Fans operating (e.g.: range hood)
These fans draw air out of the house and may actually cause a negative pressure in the
house. Turn off all fans and open a nearby window to determine if this is the cause of the
problem.
C. Wet wood
Wet or tarred wood will smoulder and smoke instead of burning properly.
D. Dirty or blocked chimney
Check to make sure the chimney is clear and clean.
E. Chimney not long enough
The minimum system height is 15 feet (4.6m). The chimney must extend at least 3 feet
(915 mm) above its point of contact with the roof and at least 2 feet (0.6 m) higher than
any roof or wall within 10 feet (3 m) of it. When installed with offsets, the minimum
system height is 15 feet (4.6 m) to 17 feet (5.2 m) as per Table 1. Additional height will
increase draught and will decrease the tendency to smoke. If only the minimum chimney
height is installed, operating conditions must be optimal (interior chimney, minimum
height of 18" before any offset, etc.).
F. Poor chimney draft
With no fire, there should be sufficient draught to exhaust cigarette smoke introduced
under the baffle. Chimneys installed against an outside wall without protection may
generate back draught problems which will cause start-up problems. To prevent this, open
a nearby window, roll up a piece of paper and light it. Then, hold it in the upper part of the
firebox to warm up the chimney. Wait until the draught is sufficient, then start the fire.
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