MAJESTIC MW42SX S Heat Circulating Fireplace Installation Guide

MAJESTIC MW42SX S Heat Circulating Fireplace

PRODUCT INFORMATION

• MODEL NAME: Heat Circulating fireplace
• MODEL NO.: WM42SX-S, WM42SX-D

IMPORTANT : Read all instructions carefully before starting installation. Failure to follow these installation instructions may result in a po$sible fire hazard and will void the MAJESTIC warranty.

Save this manual for future reference.

PRODUCT OVERVIEW

INSTALLATION PRECAUTIONS

This Majestic Fireplace and its components have been tested and will operate safely when installed in accordance with this Installation Manual. Read all instructions before starting installation, then follow these instructions carefully during installation to maximize
fireplace benefit and safety.Report to your dealer any parts damaged in shipment. Specifically, check for loose insulation in the fireplace and damper operation. This fireplace and chimney system are a hlghly engineered system, unless you use Majestic or Equus Building Products components which have been designed for the system, you may create a possible fire hazard.

The MAJESTIC warranty wlll be voided by, and MAJESTIC disclaims any responsibility for, the following actions:

• Installation of any damaged fireplace or chimney component; Modification of the fireplace, chimney assembly  or any of the component parts thereof; (except for chase flashings as detailed in EQUUS Chimney Top installation instructions.)
• Installation other than as instructed by MAJESTIC; or  Installation and/or use of any component part or accessory not manufactured or approved by MAJESTIC or EQUUS in combination or assembly with a MAJESTIC fireplace system, notwithstanding any
• Independent testing laboratory or other third party approvalof such component part or accessory.
• Any such action may create a possible fire hazard. Consult your local building codes.
• This fireplace and chimney system must be vented out-of-doors.
• Do not obstruct or modify air inleVoutlet grilles in any manner.
• Do not Install combustible materials onto the black fireplace surround.
• Burn solid wood fuel only.
• Do not install a fireplace insert or other products not specified for use with this fireplace.
• The WM42SX Series Fireplaces are not approved for installation in mobile homes.
• Prior to first firing, read Owner’s Manual for operating instructions.

INSTALLATION INSTRUCTIONS

Installing the Fireplace

CHECK HOW ACCESSORIES ARE INSTALLED
Determine where selected accessories flt into this fireplace installation procedure by checking the installation instructions provided with each accessory. See Accesso,y Parts

NOTE : The outside air system and electrical connection for the fireplace cannot be installed after the fireplace is completely installed.

DETERMINE FIREPLACE LOCATION
The fireplace can be mounted on any of the following surfaces:

1. A flat hard combustible surface.
2. A raised platform of combustible or non-combustible material.
3. On four (4) corners of the fireplace so contact is made on all four (4) dimples and perimeter edges on the bottom of the unit.

( Example : Four (4) concrete masonry blocks.)

The fireplace must maintain a %-inch air space at back and 7/ts-inch air space at sides to combustible materials and insulation. Nearby combustible floors and walls must be protected as detailed in Section H.

Refer to Air Space Data and Dimensions on Page 17 to  be sure that the location which you have selected for yourfireplace provides for clearance and framing restrictions. At this point, you should have decided what components to include in your installation, where the fireplace is to belocated,and how the chimney will be routed to the roof (straight-up, offset, or chase). If this has not been done, stop and consult your Majestic Dealer for assistance with this planning.

Note that the installed length of any chimney section is less than its total length (except for the last section installed}, because of its overlap at joints. (See Fig. 2.)

A chase is a vertical box-like structure which encloses the fireplace and/or its chimney, typically built on the outside of the house with the fireplace opening cut in the outer wall of the home.

INSTALL METAL SAFETY STRIPS UNDER FIREPLACE
See Step G, Insulating Fireplace Enclosure For Cold Climates, before completing Step A-3. Thoroughly clean intended fireplace location area. Move· fireplace to the location where it is going to be instalfed. lift fireplace front slightly to slide metal saf~ty strip(s) under front bottom edge about 1 ½-inches, allowing the remainder to extend out in front of the fireplace. Overlapthe strips at least 112-inch to provide a positive joint. (SeeFig. 3.) (Flat safety strips are packed with fireplace.) In the event the fireplace is elevated above the floor, a “Z” shaped metal safety strip should be fabricated and used toprotect combustible surfaces in front of the fireplace. This· “Z” shape is not provided, but must be fabricated of metal with each horizontal leg at least 1 lk” wide – equal in length to the metal strips provided with each fireplace.

When positioning the fireplace on all mounting surfaces (See Step A-2), the metal safety strips must be installed as described above to provide protection to combustible (burnable) surfaces in front of the fireplace.

NOTE : Safety strip is not required over non-combustible floors where all supports at the base of the fireplace are non-combustible.

ANCHOR FIREPLACE IN POSITION
To prevent shifting of the fireplace and to maintain sealing (described later), anchor the fireplace by using the fastening tabs provided on the fireplace. (See Fig. 4.) The fireplace can then be secured to the vertical framing members. Refer to Framing and Finishing Section H.

Installing the Chimney

CAUTION : REPORT TO YOUR DEALER ANY PARTS DAMAGED IN SHIPMENT, SPECIFICALLY, CHECK THE END CONNECTIONS OF CHIMNEY SECTIONS AND ELBOWS.

NOTE : The WM42SX Series Fireplace uses EQUUS Model S, 3-wall chimney system only. See installation procedure described in Section B (Installing the Chimney). Refer to the Accessory Section of this manual beginning on page 18.

LOCATE CENTERPOINT OF CHIMNEY STRAIGHT UP INSTALLATION
If the fireplace is positioned against the wall behind it, measure out 103/4-inches from that wall and make a mark on the ceiling above the fireplace. Draw a line through this mark parallel to the back wall, defining the centerline of the chimney. (See Fig. 5.} Then, using a plumb bob positioned directly over the centerpoint of the fireplace flue collar, mark the ceiling to establish the chimney centerpoint. (See Fig. 5.)

LOCATE CENTERPOINT OF CHIMNEY OFFSET INSTALLATION
In order to clear an obstruction, it may be ne~essary to offset the chimney from the vertical plane. This is done by using EQUUS CHIMNEY ELBOWS: Model 830A {30°). Each offset requires a pair of elbows. Use Table 1 and Flg. 6 to determine the offset that may be obtained using the various elbows.

Table 1:  Offset dimensions.

The following safety rules apply to offset installations. (The letters below match the letters in Flg. 6.)

• Height of the chimney measured from the hearth to the chimney exit at top:
• Do not use more than four (4) elbows per chimney. Attach the straps of the top elbows to a structural framing member. The first elbow of any pair does not have straps.
• The chimney cannot be more than 30° from the vertical plane.
• The maximum length of the angled run of the totalchimney system is 20 feet. (G plus H cannot exceed 20 feet)
• A chimney support (Model TCS8A) is required every 6 feet of angled run of chimney. Chimney supports are required at 30 feet and 60 feet of vertical chimney height above the hearth.

Determine the offset distance of your chimney arrangement from the centerline of the fireplace to the centerline of the chimney where it is to pass through the first ceiling.

NOTE : This offset distance may not be your full offset distance {T). (See above.} Locate on the ceiling the centerpoint of the chimney, as though a straight up chimney arrangement is to be used, by following the procedure outlined in Step B·1. Then measure your offset” dimension from the actual chimney centerpointon the ceiling (Fig. 7.)

MARK AREA OF CEILING CHIMNEY HOLE
The size of the ceiling chimney hole will vary with the  angle at Which the chimney passes through the ceiling. Refer to Table 2. Drive a nail up through the ceiling at the marked chimney centerpoint. Go lo the floor above and check where the hole will be cut, relative to the ceiling joists and any obstructions such as wiring or plumbing runs. If necessary, reposition the chimney and/or the fireplace to . better accommodate these joists and/or obstructions.

CUT CEILING CHIMNEY HOLE
After covering the opening of the fireplace collar, cut the chimney hole through the ceiling. Recheck the hole to be sure that it measures the hole size selected from Table 2.

FRAME CEILING CHIMNEY HOLE
Frame the ceiling chimney hole as shown in Fig. 8. It is good practice to use framing lumber that is the same size as the ceiling joists. (This is a requirement at the attic level.) The inside dimension of the frame must be the same as the hole size selected from Table 2 in order to provide the required 2 inch air space between the outside diameter of the chimney and the edges of the framed ceiling hole.

Table 2:  Sizes of ceiling chimney hole for installing firestop spacer.

INSTALL FIRESTOP SPACER
Firestop spacers are required for safety. The hole sizes listed in Table 2 for angled firestop spacers provide the minimum required air space to the chimney pipe for ceilingthicknesses up to 8 inches. When the combined thickness of the ceiling material, ceiling joists and flooring material exceeds 8 inches, adjustments must be made in the framing to assure thatthe minimum air spaces to the chimney are maintained.

It the area above the ceiling is not an attic, position the firestop spacer with the flange on the ceiling side and the dished or angled portion extending up into the hole. If the area above the ceiling is an attic, position the firestop spacer with the ilange on the top of the framed hole and the dished or angled portion extending down into the hole. (See Figs. 9 & 10.)

Nail each corner of the firestop spacer to the framing members of the ceiling hole.

NOTE : A firestop spacer is not required at the root.

Table 3. Firestop model numbers

ATTACH CHIMNEY SECTIONS

• Attach the first straight chimney section to the fireplacecoDar, or if offset installation attach elbow to the fireplace coDar. (Refer to Step B-8.) Mount the flue pipe first, using the built-in snap-lock fasteners. (See Fig. 11.) Then mount the additional pipe(s). Position each pipe section so the direction arrow is pointing UP.
• Make sure each pipe is firmly snapped and locked together as it is mounted.
• Continue installing chimney sections until ONE SECTION (all pipes) extend up through the ceiling hole. To extend through the ceiling, it may be necessary to assemble all pipes, push them up through the ceiling hole and then slide them down one at a time to connect them.

ATTACH FIRST ELBOW-OFFSET INSTALLATION

• If the first elbow is not to be attached to the fireplace, install chimney sections as required.
• Attach first elbow where required. Note that only the outer pipe of the elbow snap-locks.
• Attach the straps of all upper elbows to a structural framing member. (See Fig. 6.)

DETERMINE HOW MANY CHIMNEY SUPPORTS ARE NEEDED
The chimney system is supported by the fireplace for chimney heights less than 30 feet of vertical height above the hearth. Chimney supports are required if the chimney height exceeds 30 feet. locate chimney supports at ceiling holes or other structural framing at 30 foot heights. Spacing between chimney supports must not exceed 30 feet. Use EQUUS Chimney Support Model TCSBA.

( NOTE : The TCSBA cannot be mounted directly onto the fireplace.)

Support provided by elbow straps fullills the support requirement only if they are spaced as required above. · Angled chimney runs require support every 6 feet in addition to the elbow straps. EQUUS Chimney Supports are used for this function. Refer to Step B-2 to determine how many chimney supports are needed and where they will be placed in the chimney run.

NOTE : A chimney support is 2½-inches long when installed. This dimension must be considered when determining how many straight chimney sections are needed to provide the desired offset.

ATTACH CHIMNEY SECTIONS
Chimney supporis are attached to chimney sections the same way elbows are attached. Refer to Step 8-8. Nail the chimney support straps to adjacent structural framing, as shown in Fig. 12. Bend the straps as necessary and make sure they are tight so they will be able to support the weight of the chimney.

LOCATE CENTERPOINT OF NEXT CEILING HOLE

NOTE : If there is no other ceiling, you have completed Section B. Turn now to Section C, Penetrating the Root In a manner similar to that used in Steps B-1 and B-2, mark the centerpoint of the next ceiling hole.

PREPARE SECOND CEILING HOLE
Repeat Steps 8-3. Mark area of ceiling chimney hole; B-4, Cut ceiling chimney hole; B-5, Frame ceiling chimney hole; and B-6, Install firestop spacer.

CONTINUE INSTALLING CHIMNEY SECTIONS
Continue installing chimney sections and chimney supports (as required), until the chimney p_asses through the second ceiling hole.

NOTE : Repeat Steps B-11 through B-13 as many times as necessary to pass through all the ceilings in the building and bring the chimney just short of the roof.

Penetrating the Roof
The chimney system must be vented out-of-doors and must be terminated in an approved EQUUS top termination.

NOTE : If you are using a chase, go to Section D.

LOCATE CHIMNEY CENTERPOINT AT ROOF
Use the same procedure detailed in Steps B-1 and B-2. Drive a nail up through the roof at the marked centerpoint. This will mark the centerpoint on the outside of the roof.

CUT AND FRAME ROOF HOLE
The size of the roof hole varies with the type of chimney top that will be installed. Refer to the installation instructions provided with your EQUUS chimney top termination to find the correct size of roof hole for thisinstallation. There must be at least a 2 inch air space between the outermost section of the chimney sections and any adjacent combustible (burnable) surfaces.

WARNING : 00 NOT PACK REQUIRED AIR SPACES WITH INSULATION OR OTHER MATERIALS.

(Combustible surfaces include such things as ceiling members, joists, flooring, combustible insulation and roof structures.) Mark the outline of the roof hole around the centerpoint nail.

Note : The hole dimensions given in the chimney top installation instructions are horizontal dimensions; therefore, the ho!e size must be marked on the roof accordingly. Cover the opening of the installed chimney. Cut and frame the hole. It is good practice to use framing lumber that is the same size as the rafters. Install frame securely. Chimney top and flashing anchored to frame · must withstand heavy winds.

DETERMINE MINIMUM CHIMNEY HEIGHT ABOVE ROOF.
Major U.S. building codes specify minimum chimney height above the roof top. These specifications are summarized in the Ten Foot Rule. (See Fig. 13.) The key points of this rule are:

1. If the horizontal distance from the center of the chimney to the peak of the roof is 10 feet or less, the top of the chimney must be at least 2 feet above the peak of the roof, but never less than 3 feet in height above the highest point where it passes through the roof.
2. lf horizontal distance from the center of the chimney to the peak of the roof is more than 1 o feet, a chimney height reference point is established that is on the surface of the roof a distance of 10 feet from the center of the chimney in a horizontal plane. (See Fig. 13.) The top of the chimney must be at least 2 feet above this reference point, but never less than 3 feet in heightabove the highest point where it passes through the roof.These chimney heights are necessary in the interest of safety and do not assure a smoke-free operation.

INSTALL REMAINDER OF CHIMNEY SECTIONS
Continue Installing chimney sections up through the roof hole. Check your chimney top installation instructions for data on how high above the top of roof the CHIMNEY SECTIONS (all pipes) should go.

INSTALL CHIMNEY TOP HOUSING. OR TERMINATION.
Follow the installation instructions provided with the EQUUS chimney top you have selected. Then proceed to Framing and Finishing, Section H.

Installing Chimney in a Chase
A chase is a vertical box-like structure built to enclose the fireplace and/or its chimney.

CAUTION : Treatment of firestop spacers and construction of the chase may vary with the type of building. These instructions are not substitutes for the requirements of local building codes .. Therefore, your local building codes must be checked to determine the requirements for these steps.

NOTE : Other material may be required in addition to f EQUUS Firestop Spacers.

When installing the fireplace and chimney in a chase, it is always good building practice to insulate the chimney chase as you would an outside wall of your home. See Section G, which ·describes the insulation methods. Refer to Framing and Finishing on Page 11. Upon completion of building your chase frame, install the chimney system.

Follow the instructions for Installing the Chimney starting on page 4. Then proceed to Step D-1.

INSTALL CHIMNEY TOP HOUSING OR TERMINATION

Follow the installation instructions provided with the EQUUS chimney top you have selected. Then proceed to Framing and Finishing, Step H-1. E. Install the Electrical Connection

ELECTRICAL CONNECTION

CAUTION : All WIRING SHALL BE DONE BY A QUALIFIED ELECTRICIAN AND SHALL BE INCOMPLIANCE WITH ALL LOCAL, CITY AND STATE BUILDING CODES.

IMPORTANT : To prevent electrical shock, the house power must be disabled. This can be accomplished by positioning the circuit breaker to off.

INSTALLATION OF FIELD WIRING
The fans require 120VAC, 60 Hz power which may be connected to the right side of the fireplace at the junction box (J box} provided with the unit. This power ~hould be provided at initial Installation, since access to the outer casing is normally not practical at a later date. The junction box (J box) is attached to one (1) screen assembly of the fireplace.

• Before installing the junction box (J box} to the fireplace, remove the cover plate and two (2) mounting screws 1rom the lower right side of the fireplace and set aside. The outer casing insulation is perforated on the sides for installation of the J box. Tear at the perforations and lift up- do not remove this insulation. ·
• Remove the knockout in the center of the cover plate.
• Install the house power connection to the cover plate using listed cable clamps. Feed the house wire through the listed cable clamp leaving approximately 6 inches of wire exposed through the cover plate. Secure the listed cable clamp to the wire.
• Using pliers, remove the nut from the grounding stud in the J box and attach the green ground wire from the house power. Reinstall the nut securely. (See Fig. 15.)
• Attach the white wire from house power to one (1) wire of the receptacle and secure within a wire nut. Attach the black wire from the house power to the other wire of the receptacle and secure within a wire nut. (See Fig. 15.)
  • IMPORTANT : The wire nuts must be tight. Install the J box into the fireplace through the hole made available by removing the cover plate. The flange has a hole which will align with the hole in the outer casing. (See Fig. 14.)
• Secure the J box to the fireplace with the sheet metal screw provided.
  • NOTE : The flange of the J box goes outside the outer casing.
• Reinstall the cover plate being careful to position the excess wire within the J box.

INSTALL BLOWER ASSEMBLY
The Model FKSX blower assembly is provided for your convenience, cartoned and setting in the firebox of the fireplace.

Follow the installation instructions provided with the blower, to install in the fireplace.

Install Outside Air System

INSTALLATION PRECAUTIONS

1. The duct termination should be located so it is exposed to an out-of-doors opening at least 100 square inches. If the duct termination must be located in a crawl space or basement, be sure the termination area has 100 square inches of ventilation opening to outside air.
2. The duct termination must be located so It does not compete for air flow with exhaust fans, gas vent hoods or other air consuming devices or appllances. It must not be obstructed by rafters, insulating materials or other obstructions.
3. It is a good practice to protect your hands and eyes during Installation by wearing work gloves and safety glasses.

CAUTION : 00 NOT INSTALL TERMINATION INTO A GARAGE OR OTHER AREA THAT COULD CONTAIN FLAMMABLE LIQUIDS OR FUMES, OR INTO AN ATTIC SPACE.

PLAN INSTALLATION
Determine the location of the fireplace as described in this fireplace Installation Manual. Then plan the location of theduct termination and the route of the duct run between the fireplace and the duct termination. (Refer to Fig. 16.) Duct run must be limited to a maximum distance of 40 feet from the fireplace pipe collar to duct termination. This will provide the least restriction to air flow. No more than four 90° elbows can be used. Duct run may be horizontal, vertical, inclined or any combination of these. Vertical duct runs must be at least three (3) feet below the fireplace chimney flue exit. (See Fig. 16.}

INSTALL DAMPER ASSEMBLY

• Remove the four (4) screws, outside air cover plate and internal insulation knockout from the left side of the fireplace.
• Retain the screws for mounting the damper assembly to the fireplace.
• Discard the cover plate andinsulation knockout. The cartoned outside air components are shipped within the firebox of the fireplace. You are ready to install the damper assembly.
• Position the gasket to the backside of the damper assembly by inserting its damper rod through the keyhole in the bottom of the left side brick retainer. (See Fig. 17.) The damperassembly should be positioned so the damper blade swings freely in operation.
• When positioned properly, attach the damper assembly to the outer casing byaligning the four (4) mounting holes and securing with four (4) screws removed previously. Attach the knob to the threaded end of the damper rod.
• Check to see if the damper operates correctly. Push and pull damper rod to check that damper blade freely opens and closes. The damper door is spring loaded and will close automatically when released unless it is locked inthe open position.
• To lock open, lift the damper rod up and pull forward until the detent in the damper rod is engaged in the keyhole. Push the damper rod down to lock in place.
• To close, lift the damper rod up and release. The spring will close the damper door.

ATTACH DUCTING
Secure 4 inch diameter ducting (supplied) to inlet collar. Route ducting to termination point. ·

NOTE: Four (4) inch diameter Class 1 air ducVconnector material or metal duct (not supplied) may be used. (For Installation In New York State, only aluminum, non-combustible flexible or type “O” metal ducting is permissible.)

INSTALL TERMINATION AND CAP
At the termination end, you should install the duel termination. This should be installed from the outside of the home and should be covered with the rain cap (the rain cap snaps on). Cut a hole in the desired location approximately 41/2-inches in diameter, caulk around the hole, and slide the termination, with rain cap attached, through the opening from outside the home. Thetermination/rain cap should be caulked around its perimeter to assure a tight seal. The rain cap opening should be posi1ioned downward. (See Fig. 18.)

Insulating Fireplace Enclosure For Cold Climates
When installing the fireplace, it is always good building practice to insulate as you would an outside wall of your home. The WM42SX-(S/D) is fully insulated as shipped from MAJESTIC. To further reduce cold air into your home in cold climate areas, Sections G-1 through G-3 are recommended.

INSULATE BASE OF FIREPLACE.
Insulate the base of the fireplace with a non-combustible insulation rated for a minimum of 300°F. This step is particularly important for outside wall installations overconcrete slab floor construction. If a platform is used to raise the fireplace, the insulation should be placed on top of the platform before the fireplace is set. (See Fig. 19.)

INSPECT JOINTS
Inspect joints of the fireplace as well as the points of sealing between the fireplace and the finishing materials. Any cracks should be sealed with non- combustiblecaulking or insulation. See Fig. 20 for details of sealing between the fireplace and finishing materials.

INSULATION OF ENCLOSURE
When a fireplace is installed in a chase or on an outside wall, the enclosure should be insulated like any other wallof the home. Insulation should be installed on the inside wall as well as the outside wall(s). In a chase, it is also a good idea to install a firestop at the first ceiling level above the fireplace and close the chase with sheeting material. Insulation may then be installed above the sheeting material to assure the space around the fireplace is totally protected. See Fig. 21 for additional details of suggested insulating methods.

CAUTION : WHEN INSTALLING A FIREP.LACE IN AN INSULATED ENCLOSURE, BE SURE ALL MARKED AIR SPACES ARE MAINTAINED.

Framing and Finishing

DETERMINE WHEN TO INSTALL FRAMING
Fireplace framing can be built before or after the fireplace is set in place. Fig. 22 shows the minimum framing dimensions.

BUILD FRAMING

• The fireplace framing should be constructed of 2 x 4 lumber or heavier. Refer to Dimensions on page 17 for basic fireplace dimensions that will affect the framing dimensions.
• The header may rest on the fireplace standoffs (V-angles on the front ledge of the fireplace). but must NOT be notched to fit around them.
• Framing should be positioned to accommodate wall covering and fireplace facing material. Fastening tabs provided on the side of the fireplace can be used to anchor the fireplace. Nail through the tabs into the vertical framing members. (See Fig. 4.)

CAUTION : All joints between the finished wall and the fireplace surround (top and sides} must be sealedwith non-combustible material. Only non- combustible material may be applied as facing to the fireplace surround.

FINISH WALL

• Finish the wall with material of your choice. Do not install a combustible mantel closer than 12 inches above the outlet grille. If a combustible material is used below a flat mantel shelf, consult your local building codes for the minimum clearance from the top of the fireplace opening to the bottom of the material.
• When finishing the fireplace, a oombustible facing material (i.e. drywall or wood paneling) may be installed at the  fireplace surround top as shown in Fig. 23. This materialmay rest on the ledge brackets (L-brackets on the front edge of the fireplace), but must NOT be notched to fitaround them.
• All joints (top, bottom and sides}, where the wall or decorative facing material meets the fireplace surround must be completely sealed with a non-combustible material. {See Figs. 23, 25 and 26.)
• Only non-combustible material may, be applied as facing to the black fireplace surround.
• When finishing the fireplace, never obstruct or modify the air inlet/outlet grilles In any manner.

ADD PROTECTION TO SIDE WALLS
Adjacent combustible side walls that are within 28″ of the fireplace openings must be protected with EQUUS Wall Shield Model SP40, or a built-up wall shield design described in Fig. 24.
The built-up wall shield design described in Fig. 24 is an  alternate method for adding protection to side walls andcan be used in place of the SP40 with the same wall clearances specified for the SP40.

EXAMPLES OF INSULATION:

1. ManviDe – CERAFORM 126, K = .27, ½” thick required.
2. EOUUS Building Products – EH2416, K = .458, 1″ thick required.

INSTALL HEARTH EXTENSION.
A hearth extension is required to protect combustible floor  construction in front of the fireplace. (See Figs. 27 and 28.}The hearth extension described in Fig. 27 must be constructed of a rigid insulation with a minimum {total) Rr value of 2.18. (See Table 4 for examples.) The overall height (above combustible floor), depth and width must be as indicated, with it centered to the fireplace opening.

Table 4. Common materials and their factors. The top of the insulation must be covered with a non-combustible decorative covering or a piece of .018″ minimum sheet metal, to protect the hearth extension material. (See Fig. 27.)
Secure the hearth extension to the floor to prevent shifting, using ,trim molding or other similar means at the three (3) outer edges. Seal the crack between the fireplace hearth and the hearth extension with a non-combustible material. (See Fig. 27.)

WARNING : HEARTH EXTENSION MUST BE INSTALLED IN ACCORDANCE WITH FIGS. 27 AND 28 AND MUST NOT COVER THE GRILLE OPENING OF THE FIREPLACE.

Alternate, non-combustible materials may be used, .providing the (total) thermal resistance (Ar value) of the alternate material employed is greater than or equal to an R = 2.18. The thermal resistance (R) or the thermal conductivity (K) may be obtained from the manufacturer of the material. The factors are related by the formula

• K = 1/R.
• T = given thickness
• R = thermal resistance for a given thickness (T)
• K = thermal conductivity

Non-combustible material with a lower R value may be used, provided the thickness of the-material is sufficiently greater to maintain an equivalent (total) thermal resistance (Rr}.

EXAMPLE OF DETERMINING HEARTH EXTENSION EQUIVALENT

To determine the thickness required for any new material

EXAMPLE FOR EQUUS BUILDING PRODUCTS

EH2416 INSULATING BOARD T (new)= 5.0/0.458 x 1.00 in.= 10.92 in. (new required thickness)

INST ALL DECORATIVE GAS APPLIANCE.

The Majestic WM42SX Series fireplace is designed to accept a 112-inch gas line for an approved gas appliance. Have the appliance installed by a qualified plumber In accordance with all building codes. The gas connection may enter from either side of the fireplace. The following instructions apply to the side selected.
Locate the gas line hole in the outer casing of the fireplace and remove the insulation from the gas line tube. (Refer to Fig. 29).

Next, insert a ½-inch gas pipe through the gas line tube from the outside of the fireplace and forcibly punch out the metal knockout on the inside offireplace. Now, install the ½-inch gas pipe through the opening. After the gas pipe installation is complete, use the insulation that was removed from the gas line tube to repack the space around the pipe. This should be inserted from the outside of the fireplace and packed tightly to totally seal between the pipe and the tube.

NOTE : The gas pipe should not come In contact with any wood structure until it has reached a point at least one (1) inch away from the fireplace side. (See Fig. 29 for installation clarification.)

NOTE : Local codes may require removal of the flue damper when installing any type of gas appliance in a fireplace. For instructions on damper removal, refer toMajestic Instruction BFl51. Heat output of a gas appliance installed in the fireplace should be ratedl~ss han 100,000 BTU/HR. The gas pipe installation is intended for connection to a decorative gas appliance only (1) incorporating an automatic shutoff device and (2) complying with the Standard for Decorative Gas Appliances for Installation in Vented Fireplaces, ANSI 221.60. The decorative gas appliance should be installed in accordance with the National Fuel Gas Code, ANSI 2223.1-1988.

CAUTION : WHEN USING DECORATIVE GAS APPLIANCE, THE FLUE DAMPER MUST BE SET IN THE FULLY OPEN POSITION.

Installing Glass Doors/Door Tracks/ Door Frame
The WM42SX·S and WM42SX-D door track/door frame and glass door panels are individually packaged to protect the finish during fireplace ins1allation. The glass door enclosures are carefully engineered and tested as part of the fireplace installation and MUST be installed in accordance with the following instructions.

MOUNT WM42SX-S DOOR TRACKS
You will find prepunched holes in the top and bottom surround for the mounting of the door tracks. With the shorter leg of the track facing away from the fireplace, place one (1) spring bracket in each end of the door track. (See Fig. 30.) (NOTE: #10 x % inch long pan headscrews must be installed into slots in spring brackets with holes in brackets positioned to outward ends of door tracks.) Position the door track as shown in Fig. 30, install two (2) #8′ x 3/4 inch long flat head screws in center of two (2) holes of door track, securing the door track to the bottom surround. Using two (2) #10 x ¾ inch long screws, attach two (2) spring brackets, making certain thespring brackets are positioned as close to the sides of the fireplace as possible. Attach the remaining door track to the top surround using the same method.

MOUNT WM42SX-D DOOR FRAME
Locate and remove the three (3) sheet metal screws from each side of the firebox opening that attache.s the surround to the firebox casing. (See Fig. 31.) Slide door frame into firebox opening until top and bottom edges are tight against fireplace surround. Afign holes in side mounting flanges with mounting holes in firebox casing sides. Secure each side by reinstalling the three (3) sheet metal screws. (See Fig. 32.)

INST ALL GLASS DOORS

• Install the door assemblies by folding each door and then placing it in the track at an angle and sliding the pivot pin into the spring bracket. When the hinge pin is snapped in place, top and bottom, the door should slide smoothly in the track. (See Fig. 33.)
• To remove door panel, open door assembly, depress top spring bracket and swing upper door panel inward and .out of track.
• Close door panels and check vertical gap between edges of inner door panels and inner frame sides. If uneven gap exists, the spring bracket(s) located in each corner of the frame track will need to be adjusted. (See Fig. 34.)
• To adjust, determine which spring bracket and directionbracket needs to be moved. Remove door panel as described above. Loosen attachment screw retaining spring bracket and slide bracket in desired direction. (See Fig. 34.) Secure screw and reinstall door panel. Check alignment and repeat procedure it necessary.

OPERATING GLASS DOORS
Your fireplace is equipped with glass doors. Start the fire and leave the doors fully open (with screens closed). AFTER the fire is well started, then the doors may be closed. Do not close the doors on an excessively hot fire. The glass must be allowed to warm slowly. An excessively hot fire can be created by such things as pitch laden logs, very dry mill end lumber, or large amounts of paper or cardboard cartons. Keep the fire well back from the doors and never let flames contact the glass.

The glass doors must always be in either the fully opened or fully closed position. Partially opened doors can cause air drafts that may swirl the fire dangerously or cause smoke to be blown into the room. Any time you have a fire burning in the fireplace and you open 1he glass doors, be sure to close the fireplace screen.

WARNING : FIREPLACES EQUIPPED WITH DOORS SHOULD BE OPERATED WITH DOORS FULL V OPEN  OR DOORS FULLY CLOSED. IF DOORS ARE LEFTPARTL::Y OPEN, GAS AND FLAME MAY BE DRAWN OUT OF THE RREPLACE OPENING, CREATING RISKS OF BOTH FIRE AND SMOKE. (See Fig. 35 for correct door positions.)

Reference Data

AIR SPACE DATA
Any MAJESTIC WM42SX Series fireplace can be located directly on a flat hard- surfaced combustible floor or on a wooden platform without air space from combustible construction. Some protection, however, is required for adjacent surfaces as detailed in Fig. 36.

The-minimum air space-to-combustibles requirements for chimney sections and dome are detailed in Fig. 36.

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

Accessory Parts
The following accessory parts can be obtained from your Majestic Dealer. The fan kit, top terminations, outside air kit, glass doors, and hearth patching kits are supplied with installation instructions packaged with the unit. Should you need additional information beyond what your dealer can furnish, contact the Majestic Company, Huntington, Indiana 46750, Attention: Director of Customer Service.

CAUTION : This fireplace and chimney assembly are a highly engineered system and, as such, must be operated only with Majestic or EQUUS Building Products approved compcments that have been designed as parts of the system. If you use an unapproved component or make any modifications, you may create a possible fire hazard and will void the Majestic warranty. In addition, such action may void the coverage provided by the owner’s home insurance.

LISTINGS FOR RESIDENTIAL CONSTRUCTION: WM42SX-S, WM42SX-D UNDERWRITERS LABORATORIES REPORT NO. MH6018 ® Unde,w,nera laboratode,, Inc

WM42SX Fireplaces are covered by Mechanical Patent4,519,376 74-12-537 WM42l1l1291

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