Installation Of Single Wall Chimney Connector - Empire Comfort Systems Gateway 1700 Mode D'emploi

Double wall chimney connectors are tested and certified. The rules for double wall pipe are
found in the manufacturer's installation instructions. These rules will be very different than those
for single wall.
9.6.1

Installation of Single Wall Chimney Connector

The chimney connector assembly has been called 'the weak link' in the safety of wood heating
systems because failure to install the connector properly (which has been common in the past)
can result in house fires.
The best flue pipe assembly is one that rises straight up from the stove to the base of the
chimney with no elbows. Straight assemblies are less likely to cause problems like smoke roll-
out when the door is opened for loading. They are also more stable and easier to maintain than
assemblies with elbows. Horizontal runs of flue pipe should be avoided where possible because
they reduce chimney draft.
Figure 33: Best
The rules below are based on those found in the CSA B365 installation code. Please carefully
follow these installation instruction rules, or those enforced by the local code.
• Maximum overall length of horizontal pipe: 10 ft. (3 m) including elbows.
• Minimum clearance from combustible material: 18" (450 mm). The minimum clearance may be
reduced by 50 percent to 9" (225 mm) if suitable shielding is installed either on the pipe or on the
combustible surface.
• The assembly should be as short and direct as possible between the stove and chimney. The use
of two 45 degree elbows is often preferable to a single 90 degree elbow because less turbulence is
created in the exhaust flow and they result in less horizontal run.
• The minimum overall height of the chimney system, measured from the stove top to the exterior
termination cap of the chimney should be at least 12 ft. (3.66 m). A chimney which is too short may
lack the "tunnel effect" required to obtain a proper draft.
• Maximum number of 90-degree elbows: 2.
• Maximum unsupported horizontal length: 3 ft. (1 m).
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Figure 34: Acceptable Figure 35: Avoid