CR Series Woodburning Fireplaces
Planning Information
Preplanning an installation is very important to ensure safety and to save time and money. An installer must predetermine where a fireplace will be set and how the chimney system will be run.
Mounting the Fireplace
A fireplace may only be mounted on the following surfaces:
1.A flat combustible surface.
2.A raised wooden platform.
3.A concrete block or other solid object placed be- neath each of the four (4) corners of the fireplace.
The fireplace must be spaced 3/4 inch from a com- bustible back wall and 7/16 inch from a combustible side wall or support. (Fig. 17, Page 12)
Planning the Chimney Run
Determine how the chimney will be run, length of run and chimney components required to complete the job. (Fig. 3) Never install a chimney below minimum heights.
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| 2 WALL CHIMNEY | (LT) | (L1) |
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| SK81 | �����" | �����" | |
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| SK818 | �����" | �����" | |
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| SK83 | �����" | �����" | |
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| SK84 | �����" | �����" | |||
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Fig. 4 Installed lengths of chimney sections.
In planning a chimney system, it is important to know:
1.The height of a chimney is measured from the hearth to the exit point on the termination.
2.A chimney cannot be offset more than 30° from a vertical plane.
3.A chimney may run straight up or it may be neces- sary to offset it to avoid obstructions.
4.The maximum length of an angled run (total chim- ney system) is 20’ (6m).
5.No more than 2 offsets (4 total 30° elbows in U.S./or 2 total 45° elbows in Canada) per fireplace may be used.
6.A guy wire stabilizer is required for chimneys ex- tending more than 6’ (1.8m) above a roof line.
The Ten Foot Rule
Major U.S. building codes specify a minimum chimney height above the roof top. The “Ten Foot Rule” is a fire safety rule and not a draft rule. To ensure proper draft, it is recommended that you always meet or exceed the “Ten Foot Rule,” especially when installing a termina- tion on a high pitch roof. (Fig. 5)
The key points of the “Ten Foot Rule” are:
1.If the horizontal distance from the chimney to the peak of the roof is 10’ (3m) or less, the top of the chimney must be at least 2’ (610mm) above the peak of the roof, but never less than 3’ (914mm) in height above the highest point where it passes through the roof.
2.If a horizontal distance from the chimney to the peak of the roof is more than 10’ (3m), a chimney height reference point is established on the surface of the roof a distance of 10’ (3m) from the chimney in a horizontal plane. The top of the chimney must be at least 2’ (610mm) above the reference point, but never less than 3’ (914mm) in height above the highest point where it passes through the roof.
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| 2' Min. 3' | 0 To 10' |
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| 2' Min. 3' |
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Fig. 5 | Ten Foot Rule illustration. |
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Chimney Supports
The chimney system is supported by the fireplace for vertical chimney heights less than 20’ (6m) above the hearth. Chimney supports are required if the vertical height exceeds 20’ (6m). Locate chimney supports at ceiling holes or other structural framing at 20’ (6m) heights. Spacing between chimney supports must not exceed 20’ (6m). Use Chimney Support Model SKCS8 for SK8 chimney, and Model 11CS for 11CF chimney.
(Note: the chimney support can not be mounted directly to the fireplace.) Support provided by elbow straps fulfills the support requirement only if they are spaced as previously described. (A chimney support is 2¹⁄₂" (64mm) long when installed.)
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