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61D0006

OPERATION GUIDELINES 

HOW YOUR FIREPLACE SHOULD BE USED 

This fireplace is intended for supplemental heating only and 

is not intended for use as a primary heating system.
This fireplace is designed to sit directly on a combustible 

floor. The fireplace must be installed with clearances to com-

bustible building materials as specified by this manual. Only 

parts manufactured by Monessen Hearth Systems and labeled 

for use with this fireplace should be used in the installation 

of the fireplace except for special roof flashings that may be 

fabricated locally. The use of improper parts in the installation 

can be hazardous and voids the warranty offered by Monessen 

Hearth Systems.
This fireplace is designed to burn solid wood fuel (wood), 

UL- classified processed solid fuel fire logs, or a certified 

decorative gas appliance may be installed in the fireplace as 

described later by this instruction manual.
This fireplace is not designed to burn coal, unplumbed liquid 

fuels, unplumbed gaseous fuels or household refuse. Any 

attempt to burn these fuels in the fireplace can be hazard-

ous.

HOW YOUR FIREPLACE WORKS

As wood is burned in the fireplace, room air entering the 

fireplace is circulated around the fireplace firebox. This air 

circulation protects the firebox from overheating. Air circula-

tion through the fireplace must not be blocked or restricted 

in any manner. Blocking or restricting air circulation through 

the fireplace can cause a fire hazard.

RESIDENTIAL INSTALLATION 

In residential type installation, an AK4 outside combustion air 

kit may be connected to the left side of the fireplace to allow 

outside air to enter the firebox through a dampered opening in 

that side of the fireplace. This 

outside combustion air

 feature 

reduces the room air used for combustion and prevents exces-

sive heat loss from the room. When the fireplace is in use, 

the fireplaceʼs “outside combustion air” damper connected 

to an AK4 may be opened to allow air from outside to enter 

the fireplace firebox. When the fireplace is not in use, the 

“outside combustion air” damper should be closed to prevent 

cold air from entering the firebox. An “outside combustion 

air” damper is open when its control lever is up and closed 

when its control lever is down. A control lever for the 

outside 

combustion air

damper is located inside the firebox near the top 

of the side firebrick on the left side of the fireplace. The design 

of the fireplace allows the routing of the combustion air duct 

downward or horizontally to obtain the outside combustion 

air; this permits flexibility in planning your installation. See 

Figures 24 thru 27 and their instructions for typical installa-

tion of outside combustion air kits. Review the precautions 

and recommendations in this manual pertaining to outside 

combustion air. 

Note:  Outside  air  for  combustion  is  optional  in 

residential type installations unless required 
by local codes. Outside air for combustion 
it  is  mandatory  in  manufactured  home 
installations. Use an AK6 outside combustion 
air  kit  in  manufactured  home  installations, 
instead of the AK4 offered for residential type 
installations. 

GLASS DOORS 

Glass  doors  (models  GD36BA,  GD36PBA,  GD36SSA, 

GD42BA, GD42PBA and GD42SSA by Monessen Hearth 

Systems) may be installed to receive the maximum benefit 

from your fireplace. For large fires, the maximum heating 

benefit from the fireplace will be obtained with the doors open 

due to the high amount of radiant heat being emitted out of 

the front opening of the fireplace. With a small fire, or before 

retiring in the evenings, it is best to operate the fireplace with 

the doors closed to prevent excessive room air from being 

drawn up the chimney. When the doors are open, the mesh 

screens should be closed to help keep burning embers from 

popping out of the firebox.

Note:  Glass  doors  are  mandatory  on  fireplaces 

installed in manufactured homes.

Fireplaces equipped with glass doors 
should  be  operated  only  with  the 
glass doors fully open or fully closed. 
If doors are left partly open, gas and 
flame may be drawn out of the fireplace 
opening, creating risks of both fire and 
smoke.

W

ARNING

Summary of Contents for 36" and 42" Wood Burning Fireplaces BWB400A

Page 1: ...INSTALLING SAVE THESE INSTRUCTIONS Only Unvented Gas Log Sets which have been found to comply with the Standard For Unvented Room Heaters ANSI Z21 11 2 are to be installed in this replace A hood must...

Page 2: ...or years of heating and viewing enjoyment Please take time to read this entire manual before installing or operating your replace LISTING AND CODE APPROVALS The instructions contained in this manual p...

Page 3: ...rheating Hazardous temperatures to develop on combustible materials adjacent to the replace or chimney The emission of smoke sparks or hazardous gases into the dwelling Leakage of rain water into the...

Page 4: ...from outside to enter the replace rebox When the replace is not in use the outside combustion air damper should be closed to prevent cold air from entering the rebox An outside combustion air damper i...

Page 5: ...tions of air leakage in the home Because cold air coming in may be unavoidable in some structures Monessen Hearth Systems is not responsible for heat loss or air in ltration through or around the repl...

Page 6: ...lid fuel re logs or a certi ed decorative gas appliance may be installed in the replace as described later by this instruction manual The appliance must be properly connected to a venting system PRODU...

Page 7: ...e replace in a large and open 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 retur...

Page 8: ...pacers 133 4 Electrical 213 4 Framing Dimension 403 4 Framing Dimension C Framing Dimension B TOP VIEW FRONT VIEW SIDE VIEW BWB400A BWB400CA BWB400IA BWBC400IA BWB500A BWBC500A BWB500IA BWBC500IA Outs...

Page 9: ...ate poor chimney draft and smoke spillage from the replace open ing into the home Use elbows to offset the chimney to avoid obstructions or to locate the chimney cap in a better location See Chimney O...

Page 10: ...estopping be used at the ceiling level for chase installation even if local codes do not require restopping Do not insulate chase with blown or ll type insulation Only allow insulation to come into co...

Page 11: ...If Necessary Metal Safety Strip Must Be Use if Unit Is Placed on Combustible Floor Metal Safety Strip Must Be Use if Unit Is Placed on Combustible Floor Figure 6 Installing Floor Protection Circulatin...

Page 12: ...xtension materials in place Screw wall ties to the face of the replace Imbed the wall ties in the mortar joints of brick stone or other non combustible materials Place metal safety strip packed with t...

Page 13: ...mney air space clearance to com bustibles 2 Place replace in the desired location Securely support and level replace Check face of the replace with a carpenter s level If replace is not plumb correct...

Page 14: ...let Height Roof Flashing Model 612 Firestop Model SF Requires 15 x15 Opening 2 min Air Space to Combustibles Top Spacer Flexible Duct Type FP 4 U Combustion Air Assembly Model AK4 Front to Back Framin...

Page 15: ...ontact with and possible damage to the chimney Install restop spacers at each ceiling level Install the proper chimney cap or chimney housing on the chimney to prevent the entry of rain and debris int...

Page 16: ...Combustibles 15 Square Opening in Joist 2 Min Clearance to Combustibles 3 Min and 2 Above Any Point Within 10 Figure 15 Residential Installation Do not install combustible materials below top spacer N...

Page 17: ...he roof and be seen on the rooftop If the chimney is to penetrate a pitched roof the hole in the roof must be rectangular instead of square and should be sized according to Table 1 INSTALLING FIRESTOP...

Page 18: ...ress down until the snap locks engage Continue to add chimney sections on top of each other until chimney is at least 6 above roof opening on all sides See Figure 19 Note As the chimney sections are i...

Page 19: ...y nails per strap Figure 20 Installing Chimney Supports Outer Pipe Flue Support Straps Fasten Securely Firestop Snap Lock Chimney Support Securely to Lower Pipes before Fastening Support Straps Chimne...

Page 20: ...ustibles SF Firestop Spacer 2 min Air Space Clearance to Combustibles Vertical Chimney Enclosure Support Straps Support Straps Note Two 2 elbows may be used when total installation height is more than...

Page 21: ...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 22: ...23 Chimney Center Line Figure 23 SF30 Firestop Spacer Note If the inclined portion of the chimney passes through a oor or ceiling an SF30 restop spacer should be installed to provide the restop and s...

Page 23: ...Cutting Off Top of the Flashing Flashing Figure 26 Installing Storm Collar and Chimney Cap Model SC Chimney Cap Apply Mastic Here Storm Collar Flashing 9 Place chimney cap into matching parts of the...

Page 24: ...nside the hole in the chase cover Lower inlet air telescope down into the mating pipe of the chimney until ange on the telescope section rest on ange of the chase cover overhang Note All telescoping s...

Page 25: ...when an adequate supply of air is provided by open ventilation 4 Do not take combustion air from attic space or garage space 5 Avoid extremely long runs and numerous turns in the duct leading from th...

Page 26: ...NUED Figure 31 45 Corner Installation on Slab Floor Figure 30 Installation Above Basement or Crawl Space Do not take combustion air from attic space or garage CAUTION One Wall Inside Room Inside Wall...

Page 27: ...duct clamp or screws See Figure 33 DO NOT remove the cover if the outside air will not be connected WARNING Figure 32 Attaching Outside Air Starting Collar and Insulation Ring to Left Side of Fireplac...

Page 28: ...to each duct 3 Place duck clamp over the end of each duct Tighten duct clamp down snuggly 4 Push insulation back into place and over duct clamp Figure 35 Installing Duct Connector 403 Approximately 2...

Page 29: ...of the replace and appliance to the people who will be operating them and leave all instruction manuals with the operator of the appliance If an unvented gas appliance is installed in the replace the...

Page 30: ...the gas appliance to the gas pipe according to the appli ance makers instructions 6 Pack insulation around the pipe to prevent air owing through the tube either into or out of the rebox for proper se...

Page 31: ...See Figure 38 2 Combustible mantel and or trim may be installed within shaded area in Figure 39 Use only non combustible materials below top of spacers and behind front face Note These instructions a...

Page 32: ...To nd front clearances extend a line from back corner of unit to 4 in front of replace face and 1 outside screened opening Combustible materials may be placed within shaded areas Note Do not let combu...

Page 33: ...s must be removed to gain access to the side of the replace to install junction box later Note A rectangular switch knockout is provided on the lower right hand face of the replace This replace has be...

Page 34: ...ur yard Fireplace damper must be fully opened when using a gas appliance WARNING See Gas Appliance Installation for more guidelines HOW TO BUILD A BETTER FIRE The rst three res should be of moderate s...

Page 35: ...extreme irritation for some people Use hemlock spruce juniper and other resinous woods with caution They contain moisture pockets which upon heating pop with considerable vigor Always use a re screen...

Page 36: ...utside environmental 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 sw...

Page 37: ...heck the replace for proper adjustment and opera tion before leaving it unattended for long periods of time 13 Do inspect and clean the replace chimney regularly 14 Do keep the re screens closed when...

Page 38: ...e chim ney 14 Don t neglect to apply caulking or mastic to the required joints of the ashing and between the ashing roof 15 Don t dry clothing or other articles near the replace 16 Don t store or plac...

Page 39: ...CEMENT PARTS ARE AVAILABLE THROUGH YOUR RETAILER Item Description QTY 400 Unit 500 Unit 1 Weldment Air Door Rod 1 031867 031867 2 Firescreen Panels 2 61D0001 61D0003 3 Back Firebrick Assembly 1 61D010...

Page 40: ...for protecting oor against sparks and radiant heat 7 H2066 20 x66 hearth extension for protecting oor against sparks and radiant heat 8 AK4 4 diameter outside combustion air kit allows air from outsi...

Page 41: ...p LFSQT Square shroud termination chimney cap for chase installation use with S8 telescope pipe and VFK ashing kit Minimum chase top dimensions 26 x26 SPC Pyramid shroud termination chimney cap for ch...

Page 42: ...42 61D0006 NOTES...

Page 43: ...61D0006 43 ATTENTION APPLIANCE INSTALLER PLEASE RETURN THESE OPERATING AND INSTALLATION INSTRUCTIONS TO THE CONSUMER...

Page 44: ...ct 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 build...

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