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10 

61D0087

52" (400 Models)

66" (500 Models) 

16" Min.

(400 Unit)

20" Min.

(500 Unit)

21"

21

1

/

2

"

40

1

/

2

"

40

1

/

8

" (400 Unit)

46

1

/

8

" (500 Unit)

SAFETY STRIP INSTALLATION 

You must place the metal safety strip (packed with your fireplace in two pieces) beneath the fireplace front before installing 

hearth extension Slide  safety strip approximately 1

1

/

2

" under the fireplace. The hearth extension will install on top of the 

safety strip. 

See Figures 8 and  9.

 

HEARTH EXTENSION

For manufactured home installations, use the Model H1652 (400 unit) or Model H2066 (500 unit) hearth extension or an 

equivalent hearth extension* acceptable to the authority having jurisdiction. The hearth extension must cover an area 16" 

(400 unit) or 20" (500 unit) in front of, and 8" either side of the fireplace opening. 

See Figures 8 and 9.

 If a raised hearth 

extension is desired, the fireplace must be elevated accordingly and positioned on a platform constructed of combustible or 

noncombustible materials.
The hearth extension may be covered with tile or any noncombustible material. The hearth extension assembly must not 

block lower louvered panel.

Note:  Do not install hearth extension until after fireplace and chimney have been installed. 

FIREPLACE INSTALLATION

Figure 8 - Installing Hearth Extension 

Gas 

Opening 

Junction 

Box 

Opening 

Floor 

Level 

Safety 

Strip

Hearth 

Extension 

   Hearth Extension Clearances & Width 

400 Unit

500 Unit

On Both Sides

8" Min.

8" Min.

Front of Fireplace

16" Min.

20" Min.

Extension Width

52"

66" 

Summary of Contents for BWBC400MHB

Page 1: ...LACES U L FILE NO MH7603 These replaces have been tested to U L Safety Standard 127 and listed by Underwriters Laboratories Inc Look for the UL listing mark on your replace CONGRATULATIONS You have ch...

Page 2: ...ace is listed by Underwriters Laboratories Inc to U L 127 Safety Standard For Factory Built Fireplaces The design of this replace and these instructions complied with the applicable U L 127 safety sta...

Page 3: ...e these instructions for any future repairs Use these instructions as a guide during the installation of the replace Install all the parts used with this replace system in accordance with these instal...

Page 4: ...connection The provision for a gas line is intended only for connecting one of the gas appliances gas log sets described by the following paragraph NOTICE Install only gas log sets which have been tes...

Page 5: ...he individuals who will be operating them Instruction manuals must be left with operator of the system CAUTION While a gas log appliance is installed in one of these replaces solid fuels must not be b...

Page 6: ...or restrict air circulation in any manner Blocking or restricting the air ow will cause the reboxtoreachhazardous temperatures WARNING Figure 2 Location of Cool Air Inlet and Warm Air Outlet Warm Air...

Page 7: ...brick panel on the left side of the rebox as shown by Figure 5 NOTE Outside combustion air damper is open when its control lever is up The damper is closed when its control lever is down The replace m...

Page 8: ...room that is centrally located in the house This will optimize heat circulation and comfort Locate replace away from frequently opened doors central heat outlets or returns or other places where air m...

Page 9: ...n Securely support and level replace Check face of the replace with a carpenter s level If replace is not plumb correct it by placing shims under the edges of replace 2 Block in the replace to prevent...

Page 10: ...sdiction The hearth extension must cover an area 16 400 unit or 20 500 unit in front of and 8 either side of the replace opening See Figures 8 and 9 If a raised hearth extension is desired the replace...

Page 11: ...hat is 1 2 thick with a K value thermoconductivity of 0 43 or lower For example an insulating material 1 2 thick with a K value of 0 35 would be acceptable A hearth extension made from materials 1 2 t...

Page 12: ...Models BWBC400MHB and BWBC500MHB replaces CLEARANCES Provide required clearances shown in Figures 10 through 12 Provide 2 minimum chimney air space clearance to combus tibles Figure 10 Minimum Cleara...

Page 13: ...Extension Firestop Thimble Model SVTR Requires 141 2 x141 2 Opening Zero Clearance to Combustibles FIREPLACE INSTALLATION CLEARANCES CONTINUED Figure 12 Proper Clearances and Chimney Height You must...

Page 14: ...minimum of 2 above all portions of the building within ten feet If the chimney is to include elbows to offset the chimney see Chimney Offset and Cap Installation Section There must be at least 2 air s...

Page 15: ...he hole in the roof must be rectangular instead of square A 7 pitch requires 14 x14 framing A 15 pitch requires a 14 x15 framed opening 2 Install the SVTR restop thimble as shown in Figure 13 Nail it...

Page 16: ...n of chimney and chimney cap or chimney housing to be removed for moving the manufactured home on the highway Note If additional strength of the outer pipe joints is desired place 2 or three 3 sheet m...

Page 17: ...Installation Storm Collar 612 Flashing Roof Support Straps 4 Inclined portions of chimney are often used as stor age Enclose the inclined portions of chimney that pass through living spaces to avoid...

Page 18: ...2 151 2 22 36 411 4 471 4 1 1 1 2 0 20 1 0 1 0 0 1 0 1 0 24 28 301 2 503 4 573 4 62 1 1 1 1 0 0 0 1 0 0 0 2 1 1 0 331 2 361 2 391 2 673 4 721 2 771 2 1 1 1 1 0 0 1 0 1 0 1 2 1 1 0 42 451 2 48 82 88 92...

Page 19: ...un of the chimney to vertical 6 Nail the support straps of the second elbow to a building frame member 7 Continue installing the vertical portion of the chimney CHIMNEY CAP INSTALLATION MODEL SC CHIMN...

Page 20: ...of the chimney cap sits on the chimney pipe Punch or drill 1 8 diameter holes in the inlet air duct chimney pipe where speci ed on the brackets Fasten chimney pipe down with the No 8 screws provided S...

Page 21: ...in the structural integrity of the home Maintain the structural integrity of the manufactured home oor wall and ceiling roof CAUTION Figure 21 Attaching Outside Air Starting Collar and Insulation Ring...

Page 22: ...way the ow of air through the air inlet and air outlet louvers in the face of the replace Seal any space between face of replace and non combustible facing material Failure to seal this crack is a po...

Page 23: ...ith local codes or in the absence of local codes with the latest edition of National Electrical Code ANSI NFPA 70 See Figure 26 Always check and make sure power is off before attempting to install or...

Page 24: ...ing is installed in the center of the top track This closure clip provides friction to the door guide pins which help hold the doors together properly 1 To remove a left or right glass door assem bly...

Page 25: ...orner of the glass panel See Figure 28 5 Gently compress seat the glass spring retainers between the trim channels and glass Use chan nellock pliers to easily seat the glass spring retain ers Be caref...

Page 26: ...pacer washers on the pivot pin as shown Note Normally washers will only be needed when a misalignment condition exists as a result of a combination of tolerances ranging from glass size variations rep...

Page 27: ...ur yard Fireplace damper must be fully opened when using a gas appliance WARNING Do not burn plastics poison ivy twigs and stems and chemi cally treated woods such as discarded poles and railroad ties...

Page 28: ...re your room is well ventilated your damper open and the ue is unobstructed Then make sure your wood is dry and seasoned Unseasoned wood burns poorly If you use unseasoned wood with poor ventilation o...

Page 29: ...at produced by the replace Use the ON OFF rocker switch installed in the lower grille on the front of the replace to turn the fan on and off Prepare your re by placing two logs on the iron grate or re...

Page 30: ...built to require very little maintenance The surfaces of the brass frames are coated with a clear baked on enamel to prevent tarnishing of the brass The brass nish is treated to withstand temperatures...

Page 31: ...ainer Remove Hearth 4 Lift back edge of hearth upward using the two grate retainers Pull hearth toward you Remove hearth See Figure 33 Remove Side Brick Panels 5 Pull back edges of side brick panels t...

Page 32: ...nmental conditions such as temperature and humidity or changes in the operation of the replace can lead to rapid buildup of soot and or creosote Have a a quali ed and reputable chimney sweep clean the...

Page 33: ...ctions and proper chimney height when selecting the location and installing the chimney Don t store or place ammable liquids gases or pressur ized containers near the replace Don t put combustibles wi...

Page 34: ...22 REPLACEMENT PARTS Failure to position the parts in accordance with these diagrams or failure to use only parts speci cally approved with this appliance may result in property damage or personal in...

Page 35: ...D0619 9 Motor Assembly 2 077996 077996 10 Fan Base Bracket 2 029935 029935 11 Adjustable Spring Clip 2 037088 037088 12 Spring Door Closure 1 037416 037416 13 Glass Panel 4 61D0002 61D0004 14 Right Do...

Page 36: ...tecting oor against sparks and radiant heat 5 FP6U 6 diameter x 8 long exible uninsulated combustion air duct Use with AK6 kit 6 603 6 duct connector for splicing FP6U ducts includes one connector and...

Page 37: ...61D0087 37 NOTES...

Page 38: ...38 61D0087 NOTES...

Page 39: ...61D0087 39 ATTENTION APPLIANCE INSTALLER PLEASE RETURN THESE OPERATING AND INSTALLATION INSTRUCTIONS TO THE CONSUMER NOTES...

Page 40: ...ect safe operation We do not warrant this replace to be in compliance with your local building code Building codes vary greatly throughout the coun try and you should determine whether your local buil...

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