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Hersteller: Lennox Hearth Dateigröße: 1.59 mb Dateiname: Unterrichtssprache:

Mark an outline of the roof hole around the center of the point nail. NOTE: Hole dimensions given in the chimney top installation instructions are horizontal dimensions; therefore, the hole size must be marked on the 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 framing lumber that is the same size as the rafters. Install the frame securely because the chimney top and flashing 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 sections (all pipes) should extend. Installing Top Housing or Termination Follow the installation instructions provided with the chimney termination you have selected. Installing Chimney In a Chase Refer to Page 5, Figure 4 for an illustration of a typical chase installation. CAUTION: Treatment of firestop spacers and construction 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. 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. 20) Finish Wall Finish the wall with material of your choice. Do not install a combustible mantel shelf less than 12" (305mm) above the front opening. Do not install a mantel face plate less than 6" (159mm) from top of fireplace opening. (Fig. 21) If a combustible mate FP717 Fig. 20 Minimum clearances to combustibles. Front View Side View Standoff Combustible framing material MUST NOT penetrate AIR SPACE (shaded areas). Air Space Clearances Only noncombustiblematerial may be appliedas facing to the blackfireplace surround. Wall Shield Hearth Extension 0" Clearance to Floor Firestop OUTER DOME ......" (13mm) Air Spaceto Sides ......" (13mm) air spaceto sides 1......" (38mm) ........................ 1" (51mm) ................................Maintain ........" (13mm) air spaceto sides rial is used below a flat mantel shelf, consult your local building codes for minimum clearance from top of fireplace opening to bottom of mantel shelf. NOTE: No side wall protection is required for fireplaces installed at 45° to two (2) side walls (corner installation). Adjacent combustible side walls that are within 16" (406mm) (STR33/36 and CVR36) and 20" (508mm) (STR42 and CVR42) of fireplace opening must be protected with CFM Corporation Wall Shield Model SP40 or a specifically built wall shield described in Figure 20 & 24. Often a decorative surround or vertical portion of the mantel is desired. If this is constructed of any combustible material, it must be within the safe zone indicated in Figure 24. 14 7412961 STR/CVR Series Woodburning Fireplaces ......" 1/2" * 12" (305mm) Min. 12" (305mm) Max. 1/2" 12" (305mm) Min. 12" (305mm) Max. 6' (159mm) Min. FP721 Mantel Clearance - No Noncombustible Facing Material Finished Wall Standoff 2 x 4 Stud Noncombustible Mate- rial Header Ledge Bracket Fireplace Front Fireplace Opening * Minimum width from top of sur- round to bottom of screen rail Combustible Mantel and Trim Combustible Mantel and Trim Standoff Finished Wall 2 x 4 Stud Noncombustible Mate- rial Header Ledge Bracket Fireplace Front Fireplace Opening Noncombustible Facing Material Finished Wall 2 x 4 Stud Must be sealed with noncombustible materialFireplace Front Mantel Clearance - with Noncombustible Facing Material Fig. 21 Fireplace surround flush with finished wall. 1......" Ref. Combustible materials are permitted within a shaded areashown in Figure 23, titledMinimum Wall Clearances. * * * MA81 Face Plate *12" (305mm) from top of fireplace opening. ** 6" (159mm) from top of fireplace opening. (Noncombustible material must separate the black face surround of the fireplace and any combustible mantel material) Fig. 22 Combustible mantel clearances. 7412961 15 STR/CVR Series Woodburning Fireplaces Side Wall Protection All joints (top, bottom and sides) where wall or decorative facing material meets fireplace surround must be completely sealed with a noncombustible material. (Figs. 20 and 24) The special wall shield design described in Figure 20 is an alternate method of adding protection to side walls and can be used in place of the SP40 with the same wall clearances specified for the SP40. Rt must =1.85 minimum. Examples of wall shield insulation: 1. Manville - CERAFORM 126, K=.27, 1/2 inches thick 2. CF...

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