Monessen Hearth CWC400, CWC500 Cut and Frame Roof Hole, Install Remainder of Chimney Sections

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Cut and Frame Roof Hole

Size of roof hole varies with the type of chimney ter- mination installed. Refer to installation instructions provided with the chimney termination to find correct size of roof hole.

There must be an air space (1¹⁄₂" - SK8; 2" - 3-wall) between outermost portion of chimney sections and any adjacent combustible surfaces. (Combustible surfaces include burnable materials such as: ceiling members, joists, flooring, combustible insulation and roof struc- tures.)

WARNING: DO NOT PACK REQUIRED AIR SPACES WITH INSULATION OR OTHER MATERIALS.

Mark an outline of the roof hole around the center of the point nail. Note: Hole dimensions given in the chim- ney top installation instructions are horizontal dimen- sions; therefore, the hole size must be marked on the

CWC Series Woodburning Fireplace

Air Space Clearances

Combustible framing material MUST NOT penetrate AIR SPACE (shaded areas).

1Z\x" (SK8)

 

2" (3-wall)

Standoff

 

Z\x" Air Space

To Sides

Front View

Side View

roof accordingly.

Cover the opening of the installed chimney so debris cannot get into the system.

Cut and frame the hole. It is good practice to use fram- ing lumber that is the same size as the rafters. Install the frame securely because the chimney top and flash- ing anchored to the frame must be able to withstand heavy winds.

Install Remainder of Chimney Sections

Since you have already preplanned the height of your termination according to the Ten Foot Rule, continue to install pipe to the predetermined height.

Check the chimney top installation instructions for details on how high above the roof top the chimney sec- tions (all pipes) should extend.

Installing Top Housing

or Termination

Wall

Shield

Only noncombustible material may be applied as facing to the black fireplace surround.

Firestop

Z\x" Air Space to Back

Z\x" Air

Space to Sides

0" Clearance to Floor

Hearth

Extension FPC559

Follow the installation instructions provided with the chimney termination you have selected.

Installing Chimney In a Chase

Refer to Page 4, Figure 3 for an illustration of a typical chase installation.

CAUTION: Treatment of firestop spacers and con- struction of chase may vary with type of building. These instructions are not a substitute for local building codes. You must check your local building codes to determine specific requirements for your city or state. Note: Other building materials may be required in addition to Firestop Spacers.

Fig. 21 Minimum clearances to combustibles.

Finishing

CAUTION: All joints between the finished wall and the fireplace surround (top/sides) must be sealed with noncombustible material to prevent cold air leakage into the room. Only noncombustible material may be applied to the facing of the fireplace surround. (Black painted area) (Fig. 21)

Finish Wall

Finish the wall with material of your choice. Do not install a combustible mantel shelf less than 12" (305 mm) from top of grille opening. Do not install a mantel face plate less than 6" (159 mm) from top of grille opening. (Fig. 23) If a combustible material is

87D1504

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Contents CWC Series Table of Contents Safety InformationCWC400 Series Woodburning Fireplace Circulating Model Front Width Back Width Depth Chase InstallationChimney Requirements Offset Installations Mounting the Fireplace Planning InformationPlanning the Chimney Run Ten Foot RuleChase Installation InstallationChimney Supports Insulating Fireplace Enclosure For Cold ClimatesInstall Variable Speed Control Install Electrical ConnectionInstallation Instructions FramingOffset Installation Straight-Up Chimney InstallationChimney Set-up Ceiling Chimney Hole Possible ObstructionsFraming the Ceiling Hole Positioning, Safety Strips Securing The FireplaceAngle of Chimney at Ceiling Size of ChimneyInstalling the Chimney System Installing Outside Air KitInstalling the Firestop Spacer Ceiling Hole Proper Firestop Spacer InstallationCanadian Requirements for Insulation Shield Continue Installing Pipe to Complete RunAdditional Ceilings Penetrating the RoofInstalling Top Housing Or Termination Install Remainder of Chimney SectionsInstalling Chimney In a Chase Cut and Frame Roof HoleFrom top of grille opening for circu- lating models Side Wall ProtectionTop View Minimum Wall Clearances Hearth InstallationEH2416 458 Common Materials and FactorsFireplace Top View Installing Line for Gas LogsItem/Model Number CWC400/500 Woodburning FireplaceAccessory Description Model Number AccessoriesComponent Description Chimney ComponentsModel Number Canada Component Description Model NumberCWC Series Woodburning Fireplace Limited Warrantycwc Series Woodburning Fireplace Mhsc