Majestic Appliances SC42A Planning Information, Mounting The Fireplace, Planning the Chimney Run

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SR/SC Series "A" Woodburning Fireplace

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 1/2" (13mm) from a combustible back wall and 1/2" (13mm) from a com- bustible side wall or support. (Page 14, Fig. 20)

Planning the Chimney Run

 

LT

 

TOTAL

INSTALLED

 

MODEL SK

LENGTH

LENGTH

 

 

2 WALL CHIMNEY

(LT)

(L1)

 

L1

SK81

11¹⁄₂"

10¹⁄₂"

 

 

SK818

17¹⁄₂"

16¹⁄₂"

 

L1

SK83

35¹⁄₂"

34¹⁄₂"

 

SK84

47¹⁄₂"

46¹⁄₂"

 

 

 

 

WF288

Fig. 7

Installed lengths of chimney sections.

 

Determine how the chimney will be run, length of run and chimney components required to complete the job. (Fig. 6) Never install a chimney below minimum heights.

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 extending 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. 8)

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' (614mm) in height above the highest point where it passes through the roof.

 

0 To 10’

 

 

2’ Min.

0 To 10’

 

3’

 

Min.

 

 

 

2’ Min. 3’

 

 

Min.

 

Reference

 

 

Point

 

 

 

AC246

Fig. 8

Ten Foot Rule illustration.

 

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Contents SR/SC Series a Table of Contents Safety InformationSR36A Series Woodburning Fireplace SR42A Series Woodburning Fireplace Chase Installation Chimney Requirements Offset Installations Planning the Chimney Run Installed lengths of chimney sectionsPlanning Information Mounting The FireplaceInsulating Fireplace Enclosure for Cold Climates InstallationChase Installation Chimney SupportsFraming Installing Electrical Wire For Circulator ModelsInstall Fan Kit Assembly Chimney SetupCutting the Hole Straight-Up Chimney InstallationOffset Installation Ceiling Chimney Hole Possible ObstructionsAngle of Chimney at Ceiling Positioning, Safety Strips Securing the FireplaceInstalling Outside Air Kit Installing the Chimney SystemFor Insulation Shield Installing the Firestop Spacer Ceiling HoleProper Firestop Spacer Installation Canadian RequirementsPenetrating the Roof Continue Installing Pipe to Complete RunInstall Remainder of Chimney Sections Additional CeilingsFront View Side View Installing Top Housing or TerminationInstalling Chimney In a Chase Finishing Finish WallMantel clearances Top ViewNoncombustible Surround Facing Side Wall Protection Hearth InstallationCommon Materials and Factors Fireplace Top View Installing Line for Gas Logs948 Item/Model NumberAccessory Description Model Number AccessoriesComponent Description Model Number Chimney ComponentsChimney Components cont. Canada Limited Warranty & 30 Year Protection Plan CFM Specialty Home Products