Table of Contents
Related Manuals for Monessen Hearth WOODBURNING FIREPLACE 424WBST
Summary of Contents for Monessen Hearth WOODBURNING FIREPLACE 424WBST
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Page 1: Woodburning Fireplace
424WBST Designer Woodburning Fireplace Homeowner's Installation and Operating Manual For use in U.S./Canada Underwriter's Laboratories Report No. MH7603 DO NOT DISCARD THIS MANUAL: Retain for future use. 87D1506 12/09 Rev. 2... -
Page 2: Table Of Contents
424WBST Designer Woodburning Fireplaces PLeASe ReAD THIS MANUAL BeFORe INSTALLINg AND USINg FIRePLACe. IMPORTANT: Read all instructions and warnings carefully before starting installation. Failure to follow these instructions may result in a possible fire hazard and will void the warranty. Description The 424WBST fireplaces are multi-side solid fuel, wood- burning fireplaces. -
Page 3: Specifications And Framing
Framing Width Will be 24" Minus 2 x (Drywall Thickness) 18 ” (464 mm) 12” (305 mm) 36" (914 mm) 12” 9 ” (305 mm) (241 mm) Fig. 1 424WBST specifications and framing. 87D1506 424WBST Fireplace Dimensions 11” (279 mm ) Dia. 24" Total Unit Width 20” (508 mm) 52 ” (1340 mm) 49 ”... -
Page 4: Parts Identification
424WBST Designer Woodburning Fireplaces 424WBST Woodburning Fireplace Outer Collar Outer Dome Gas Line Access Outside Air Access Metal Safety Strips, shown not in place (1, 2, or 3 Pieces) Fig. 3 424WBST Parts Identification. Front/Back Width FP1545 424WBST 29" hearth dimensions (737 mm) 1/05 Fig. -
Page 5: Chase Installation
Chase Installation Insulation methods shown are optional for cold climate, not a requirement for unit operation. Batt Insulation (cut out around firestop) Firestop Ceiling Level Outer Dome Refer to Figures 21 and 26 for clearance information. Ledge Brackets Nailing Flange Gas Access (both sides) Outside Air Cover Plate... -
Page 6: Chimney Requirements
424WBST Designer Woodburning Fireplaces Chimney Requirements - Offset Installations CHIMNEY FLUE EXIT RISE 6 FT. OFFSET HEARTH FLOOR Example 1 Notes: G + H cannot exceed 20 feet. Air Space Clearances: SK8 (2-wall) = 1Z\₂" Illustration Key The following safety rules apply to offset installations (letters correspond with illustration above): A. -
Page 7: 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. NOTe: The 424WBST model uses MHSC SK8 (2-wall) chimney systems. -
Page 8: Chimney Supports
424WBST Designer Woodburning Fireplaces Chimney Supports The chimney system is supported by the fireplace for vertical chimney heights less than 20' (6 m) above the hearth. Chimney supports are required if the vertical height exceeds 20' (6 m). Locate chimney supports at ceiling holes or other structural framing at 20' (6 m) heights. -
Page 9: Chimney Set-Up
Framing Framing can be constructed before or after the fireplace is set in place, however, most installers build the frame before setting the fireplace. Frame fireplace with 2 x 4 lumber or heavier materi- als. Refer to framing dimensions in Figures 1, 2, 3 or 4 for basic fireplace specifications. -
Page 10: Framing The Ceiling Hole
424WBST Designer Woodburning Fireplaces Actual Centerpoint 20 ” Chimney (521 mm) Centerline Fig. 10 Locate centerline of chimney with plumb line. Ceiling Chimney Hole/ Possible Obstructions FP707 The size of the hole in ceiling will vary with the angle at STR/CVR which the chimney passes through ceiling. -
Page 11: Positioning, Safety Strips, Securing The Fireplace
Positioning, Safety Strips, Securing the Fireplace Slide fireplace into position. Lift the fireplace front slightly and slide the metal safety strips under front bottom edge about 1Z\₂" (38 mm), al- lowing the remainder to extend in front of firebox. Over- lap strips at least 1/2"... -
Page 12: Installing The Chimney System
424WBST Designer Woodburning Fireplaces Installing the Chimney System Start by attaching the first chimney section to the collar on top of the fireplace. Install the pipe as pictured in Figure 16. When you get a good lock, you will hear the pipe clearly snap together. - Page 13 Firestop spacers are not available for nor are they re- quired on vertical walls. DO NOT put any sealant around the area where the outer pipe slides through the firestop spacer. If you seal this area, it may cause a fire hazard. Canadian Requirements for Insulation Shield In Canada, an attic insulation shield is required to...
- Page 14 424WBST Designer Woodburning Fireplaces 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.
- Page 15 Mantel Clearance - No Noncombustible Facing Material Combustible 12" Mantel and Trim (305mm) Max. 1/2" 12" (305mm) Min. * Minimum width from top of sur- round to bottom of screen rail Fig. 21 Fireplace surround flush with finished wall. 1 " Ref.
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Page 16: Side Wall Protection
424WBST Designer Woodburning Fireplaces Side Wall Protection All joints (top, bottom and sides) where wall or deco- rative 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. -
Page 17: Hearth Installation
Minimum Wall Clearances WITH Noncombustible Surround Facing 4" BRICK (Example material) Firebox Opening A - Min. clearance to combustible perpendicular wall Side B - Min. clearance Wall to combustible perpendicular wall when using noncombustible wall shield* Combustible material permitted within shaded area. * Noncombustible wall shield requires 1"... - Page 18 424WBST Designer Woodburning Fireplaces example of Determining Hearth extension equivalents To determine the thickness required for any new mate- rial: K of new material (per inch) required = thickness K of listed material (per inch) example for Common Brick T (new) = 5.0 / 0.458 x 0.50 in. = 5.46 in. (new required thickness).
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Page 19: Installing Line For Gas Logs
Installing Line for gas Logs Monessen Fireplaces are designed to accept a 1/2" (13 mm) gas line for installation of an approved gas appliance. (MHSC manufactures a wide variety of gas logs for use in Monessen fireplaces.) Be sure to have the appliance installed in accordance with building codes. -
Page 20: Replacement Parts
424WBST Designer Woodburning Fireplaces MHSC reserves the right to make changes in design, materials, specifications, prices and discontinue colors and products at any time, without notice. 424WBST Woodburning Fireplace Ref. Description Flue Damper Damper Handle Damper Handle Push Nut Screen Rod Assembly (two per fireplace) Screen Assembly (four per fireplace) Screen Pulls (four per fireplace) Firebrick - Hearth... -
Page 21: Accessories
The following accessories for this appliance are available from your local Monessen distributor. Should you need ad- ditional information beyond what your distributor can furnish, contact: MHSC, 149 Cleveland Drive, Paris, KY 40361, Attn: Technical Services. CAUTION: This fireplace and chimney assembly is a highly engineered system, and, as such, must be operat- ed only with MHSC approved components. -
Page 22: Chimney Components
424WBST Designer Woodburning Fireplaces U.S. Component Round Top Termination Round termination to be used with SK8 chimney system. (Flashing not included.) Long Round Top Round top to be used with a chase installation Termination utilizing SK8 chimneysystem. Knock-down Shroud - Black pyramid knock-down shroud used for Pyramid chase installations with any RLT round top... - Page 23 Canada Component Attic Insulation Shield SK8 Chimney Sections 45° Chimney Elbows 87D1506 Description Used to prevent insulation from coming in contact with the chimney system. Used to build chimney systems exposed above roof. Provides 45° offset and return. FOR CANADIAN INSTALLATIONS ONLY.
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Page 24: Limited Warranty
Factory-Build Fireplace and Components What is Covered and For How Long Five-Year Coverage: For five years from the date this fireplace and components are first purchased for use, MHSC will, at its option, repair or replace any defective part of this fireplace or components, or refund to you a sum not to exceed the factory retail price in effect at the time of purchase.
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