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MHSC B36LA8, Installation, Operation And Maintenance Manual, Page: 1 / 36

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Woodburning Fireplaces
Models: B36LA8 and B36RA8

Installation, Operation and Maintenance Manual

For Residential Installation

36” Built-in Wood Burning Corner Fireplace with Optional Outside Air and Glass Doors

WARNING: This fireplace has not been tested with an unvented gas log set. To reduce risk 

of fire or injury, do not install an unvented gas log set into fireplace.

87D0176  2/10  Rev. 2

Report No. MH7603

Summary of Contents for B36LA8

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

Page 2: ...installation you should check with local building officials to obtain required permits and assure compliance with local regulations and coded If you encounter problems with code requirements contact...

Page 3: ...ed for supplemental heating only and is not intended for use as a primary heating system The fireplace is designed to sit directly on a combustible floor The fireplace must be installed with clearance...

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

Page 5: ...provides for the installation of the model LF FS 2 firestop spacer in a residential installation Since the pitch of the roof influences the opening size required at the roof level table 1 should be u...

Page 6: ...himney 1Z x Min Air space Clear ance to Combustibles Chimney Section SK81 1 ft pipe SK818 18 pipe SK83 3 ft pipe SK84 4 ft pipe Top Spacer Zero Clearance to Combustibles at Side Spacers Glass Doors Mo...

Page 7: ...Model I658 Clearance from Fireplace Opening to Sidewall When Wall Shield is not Used B36RA8 Hearth Extension Model I627 Hearth Extension Model I658 Minimum Clearance from Fireplace Opening to Sidewal...

Page 8: ...hearth extension and the face of the fireplace To help prevent the crack from developing the hearth extension materials must be firmly fastened in place Wall ties should be screwed to the face of the...

Page 9: ...yramid style chimney cap used to terminate chimney through a chase Includes adapter Flashing not included CF8CA Adapter kit Unites square termination with chimney pipe 202036 Housing extensions Extend...

Page 10: ...3 Min Storm Collar Flashing Roof Joist Shields Attic Space Refer to Table 1 for Roof Opening Size FS Firestop Spacer 14Z x x 14Z x Framed Opening 1Z x Clearance to Com bustibles with Firestop SK8 Seri...

Page 11: ...tional for cold climate not a requirement for unit op eration Termination Cap Storm Collar Pan Flashing Draftstop Top Spacer Surround Screen Firebox Metal Safety Strips 1 2 or 3 pieces Nailing Flange...

Page 12: ...oist 1Z x Clear ance to Combus tibles When Using Firestop Max Installation Height 86 14Z x Square Hole in Joist 1Z x Min Air Space Clear ance Between Chimney and combustibles Firestop Spacer Firestop...

Page 13: ...arances as specified by this in struction manual 3 Set the fireplace in the desired location and be sure it is securely supported and leveled Install metal safety strip for hearth extension as shown b...

Page 14: ...eplace Model C36RMA B36RA8 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 B36LA8 fireplace Cool Air Inlet WB36LR G...

Page 15: ...ge to the chimney 4 Install firestop spacers at each ceiling level 5 Install the proper chimney cap or chimney housing on the chimney to prevent the entry of rain and debris into the chimney and to as...

Page 16: ...to the chimney exit B36LA8 B36RA8 Maximum 90 0 Minimum Without Elbows 15 6 With 2 Elbows 17 6 With 4 Elbows 21 0 B Do not use more than 4 elbows per chimney Attach the straps of the return top elbow t...

Page 17: ...lace may be used 6 A guy wire stabilizer is required for chimneys extend ing more than 6 1 8 m above a roof line The Ten Foot Rule Major U S building codes specify a minimum chimney height above the r...

Page 18: ...hase it is also a good idea to install a firestop at the first ceiling level above the fireplace and enclose the chase with sheeting material Insulation may then be installed above sheet ing material...

Page 19: ...size of the hole in ceiling will vary with the angle at which the chimney passes through ceiling Drive a nail up through ceiling at marked chimney center point Go to floor above and see where hole wil...

Page 20: ...is used to keep pipe spaced properly and required for safety Nail the firestop spacer at each corner to the framing members of the ceiling hole Note A firestop spacer is not required at the roof Hole...

Page 21: ...chimney termina tion installed Refer to installation instructions provided with the chimney termination to find correct size of roof hole There must be an air space 1 38 mm with SK8 between outermost...

Page 22: ...E Firestop Spacer 14Z x x 14Z x Maximum four 4 elbows Per Fire place Offset Max 10 Support Straps Diagonal Chimney Enclosure Vertical Chimney Enclosure Recommended Diagonal Chimney Enclosure Acceptabl...

Page 23: ...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 air inlet...

Page 24: ...e fireplace with the four 4 sheet metal screws provided Figure 24 3 Cut a 6 diameter opening for model OAC4 in the out side wall covering where the model OAC4 outside grille is to be located Figure 26...

Page 25: ...sions on the fireplace The following instructions only apply to passing the gas line through the fireplace wall Follow the instructions provided by the appliance for the gas line testing and ad justin...

Page 26: ...is manual Page 13 Figure 10 Combustible mantels and trim must be installed in accordance with the National Fire Protection Association ANSI NFPA 211 Standard Section 7 2 3 3 Glass Door Installation Th...

Page 27: ...rer Recommendation Top Edge of Fireplace Opening Mantel Installation Do Not Install Combustible Facing Material Below Top Edge of Fireplace Air Inlet Opening CAUTION Never block bottom air inlet openi...

Page 28: ...blems If your fireplace is equipped with an outside combustion air assembly open the combustion air inlet by pushing upward on the lever located above the firebrick on the left side of the firebox NEV...

Page 29: ...ced on a noncombustible floor or on the ground well away from all combustible materials pending final disposal If the ashes are disposed of by burial in soil or otherwise locally dispersed they should...

Page 30: ...the chimney 9 Do install firestop spacers at each ceiling level when the chimney is installed in a multistory building 10 Do install the proper chimney cap or chimney housing on the chimney to preven...

Page 31: ...larly 21 Don t operate the fireplace with the glass fire screen doors partially open The doors should always be fully open or fully closed 22 Don t use gasoline kerosene engine oil or charcoal lighte...

Page 32: ...Y 40361 www mhsc com Item Description Qty B36RA8 B36LA8 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 Ro...

Page 33: ...87D0176 33 B36LA8 B36RA8 Woodburning Fireplaces...

Page 34: ...34 87D0176 B36LA8 B36RA8 Woodburning Fireplaces...

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

Page 36: ...MHSC 149 Cleveland Drive Paris Kentucky 40361 www mhsc com...

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