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53D9041

17

B36LA & B36RA Woodburning Fireplaces

CHIMNEY INSTALLATION

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Centerline of 
Chimney

Figure 15

Actual Center Point

Plumb Line

Plumb Bob

Imaginary Center 
Point

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Figure 17

Outer Pipe

Flue

Support Straps
Fasten Securely

Firestop

Chimney Support

Snap Lock Chimney 
Support Securely to 
Lower pipes Before 
Fastening Support 
Straps

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Figure 16

Firestop Spacer Installation at Attic Level

Inlet Air Pipe

Ceiling Joist

Flue Pipe

Firestop Spacer

Chimney Section

Header

Firestop Spacer Installation at Floor Levels

Floor 
Joist

Inlet Air Pipe

Flue Pipe

Firestop Spacer

Chimney Section

Header

Table 1

Minimum Required Roof Opening

Minimum Framed Opening

 

 

“S” Series 

“E” Series

  Roof Pitch 

Double Wall 

Triple Wall Chimney

 

0/12 

14

¹⁄₂

” x 14

¹⁄₂

” 

17” x 17”

 

1/12 

14

¹⁄₂

” x 14

⁵⁄₈

” 

17” x 17

¹⁄₈

 

2/12 

14

¹⁄₂

” x 14

³⁄₄

” 

17” x 17

¹⁄₄

 

3/12 

14

¹⁄₂

” x 15” 

17” x 17

¹⁄₂

 

4/12 

14

¹⁄₂

” x 15

¹⁄₄

” 

17” x 17

³⁄₄

 

5/12 

14

¹⁄₂

” x 15

³⁄₄

” 

17” x 18

¹⁄₄

 

6/12 

14

¹⁄₂

” z 16

¹⁄₄

” 

17” x 18

³⁄₄

 

7/12 

14

¹⁄₂

” x 16

⁷⁄₈

” 

17” x 19

³⁄₈

 

8/12 

14

¹⁄₂

”x 17

¹⁄₂

” 

17” x 20”

 

9/12 

14

¹⁄₂

” x 18

¹⁄₈

” 

17” x 20

⁵⁄₈

 

10/12 

14

¹⁄₂

” x 18

⁷⁄₈

” 

17” x 21

³⁄₈

 

11/12 

14

¹⁄₂

” x 19

³⁄₄

” 

17” x 22

¹⁄₄

 

12/12 

14

¹⁄₂

” x 20

¹⁄₂

” 

17” x 23”

FP1891

FP1892

FP1890

Summary of Contents for B36LA

Page 1: ...esidential Installation 36 Built in Wood Burning Corner Fireplace with Optional Outside Air and Glass Doors WARNING This replace has not been tested with an unvented gas log set To reduce risk of re o...

Page 2: ...No 211 Some codes may require the replace and chimney be electrically grounded Before beginning the installation you should check with local building of cials to obtain required permits and assure com...

Page 3: ...tended for supplemental heating only and is not intended for use as a primary heating system The replace is designed to sit directly on a combustible oor The replace must be installed with clearances...

Page 4: ...iew the precautions and recommendations in the section of this manual pertaining to outside combustion air assembly The replace is also equipped with a ue damper which must be open when the replace is...

Page 5: ...ace Clearance to Combustibles Chimney Section S12 1 ft pipe S18 18 pipe S36 3 ft pipe S48 4 ft pipe Top Spacer Zero Clearance to Combustibles at Side Spacers Glass Doors Model WB36LR Galvanized Sheet...

Page 6: ...30 feet SC Round chimney cap for contemporary installations Includes storm collar SCL Round telescoping chimney cap SQL8 Square telescoping chimney cap 612 0 6 12 pitch ashing for contemporary instal...

Page 7: ...on Air Assembly Model OAC4 Nail to Framing Members Bottom of Fireplace Chimney 2 Min Air space Clearance to Combustibles Chimney Section E12 1 ft pipe E18 18 pipe E36 3 ft pipe E48 4 ft pipe Top Space...

Page 8: ...ows per chimney ECS Chimney support required when chimney height exceeds 30 feet LFCC 1 Round chimney cap for contemporary installations Includes storm collar LFCCL 1 Round termination cap for chase i...

Page 9: ...ng size required at the roof level table 1 should be used as a guide for sizing the roof opening Proper selection of a chimney outlet location is also important Objects such as overhanging or nearby t...

Page 10: ...n the hearth extension and the face of the replace To help prevent the crack from developing the hearth extension materials must be rmly fastened in place Wall ties should be screwed to the face of th...

Page 11: ...I658 Clearance from Fireplace Opening to Sidewall When Wall Shield IS NOT Used C36RA or B36RA Hearth Extension Model I627 Hearth Extension Model I658 Minimum Clearance from Fireplace Opening to Sidew...

Page 12: ...orm Collar Included with Chimney Cap Flashing 612 or 1212 Roof Joist Shields Attic Space Refer to Table 1 for Roof Opening Size FS Firestop Spacer 14 x 14 Framed Opening 1 Clearance to Com bustibles w...

Page 13: ...quare Hole in Joist 1 MCear ance to Combus tibles When Using FS Firestop Max Installation Height 86 14 Square Hoel in Joist 2 Min Air Space Clear ance Between Chimney and combustibles Firestop Spacer...

Page 14: ...his in struction manual 3 Set the replace in the desired location and be sure it is securely supported and leveled Install metal safety strip for hearth extension as shown by Figures 10 11 and 12 Chec...

Page 15: ...odel C36RMA B36RA with RLK Louver kit WB36LR Glass Door and OAC6 Combustion Air Model C36LMA not shown same as above except uses LLK Louver Kit on the B36LA replace Cool Air Inlet WB36LR Glass Door Ga...

Page 16: ...ith a plumb line as shown by Figure 15 The replace should be located in the planned installation position After the center line is established and a nail is driven to mark the point the opening can be...

Page 17: ...ling Joist Flue Pipe Firestop Spacer Chimney Section Header Firestop Spacer Installation at Floor Levels Floor Joist Inlet Air Pipe Flue Pipe Firestop Spacer Chimney Section Header Table 1 Minimum Req...

Page 18: ...y are as follows If the total height of the replace and chim ney is 16 0 or more two elbows may be used in the chimney 21 0 or more four elbows may be used in the chimney 4 The inclined portions of ch...

Page 19: ...use of FS Firestop FP2169 Figure 20 For Triple Wall Elbows Bench tab Over FP2168 Figure 19 Collar Bracket Table 2 Select desired offset and read across Table to obtain rise quan tity of chimney secti...

Page 20: ...14 x 14 Maximum four 4 elbows Per Fire place Offset Max 10 Support Straps Diagonal Chimney Enclosure Vertical Chimney Enclosure Recommended Diagonal Chimney Enclosure Acceptable Fasten All Support Str...

Page 21: ...ibe Line at Bottom FP1897 Model SC SCL Round Chimney Cap Apply Mastic Here Storm Collar Flashing 36 Min 18 Dim 7 FP2171 chimney cap install FP2171 Figure 23 5 Nail the ashing securely in place with ei...

Page 22: ...ated at an exterior location which is not likely to be accidentally blocked in any manner The assembly should be located above the snow line to prevent blockage by snow accumulation 3 The combustion a...

Page 23: ...cking screw down and tighten it with a screwdriver or nutdriver Figure 27 10 Nail or screw the combustion air assembly to the surface of the wall NOTE If the wall covering is brick or stone use approp...

Page 24: ...rohibit or place restrictions on the use of gas appliances in replaces Check with local code authorities before proceeding with the installation 5 The gas appliance and all connecting gas piping shoul...

Page 25: ...ng and attaching the base to the supporting oor will further reduce the possibility of such a crack developing CAUTION Do not allow any trim materials to extend closer than 3 8 to the vertical edges o...

Page 26: ...w Top Edge of Fireplace Combustible Mantel Top Edge of Fireplace 18 Min From Fireplace Opening to Bottom of Combustible Mantel Manufacturer Recommendation Top Edge of Fireplace Opening Top of Fireplac...

Page 27: ...How To Build A Better Fire The rst three res should be of moderate size to allow the replace to adjust and the bricks to cure before being subjected to larger res First make sure your room is well ven...

Page 28: ...air pollution but can induce extreme irritation for some individuals Use hemlock spruce juniper and other resinous woods with caution They contain moisture pockets which upon heating pop with conside...

Page 29: ...g the heating season to determine if a creosote buildup has occurred If creosote has accumulated it should be removed to reduce the risk of a chimney re The chimney cap can be removed for inspection m...

Page 30: ...m the face of the replace only with noncombustible materials 5 Do attach the noncombustible face trim material rmly to the face of the replace 6 Do block in or fasten the replace to prevent the possib...

Page 31: ...ore or place ammable liquids gases or pressurized containers near the replace 17 Don t neglect to instruct all responsible persons in the proper and safe operation of the replace 18 Don t fail to inst...

Page 32: ...s KY 40361 www mhsc com Item Description Qty B36RA B36LA 1 Retainer Side Brick 1 020270 020270 2 Retainer 2 Z19901 Z19901 3a Firebrick Side Assy Right 1 014012 3b Firebrick Side Assy Left 1 021663 4 R...

Page 33: ...53D9041 33 B36LA B36RA Woodburning Fireplaces...

Page 34: ...34 53D9041 B36LA B36RA Woodburning Fireplaces...

Page 35: ...your local building code contains restrictions on the use of this replace before you purchase it Blowers or fans which are warranted separately Heat loss due to the passage of heat or air through or a...

Page 36: ...JANUARY 2009 53D9041 Rev 2 MHSC 149 Cleveland Drive Paris Kentucky 40361 www mhsc com...

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