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15

BFC36 Balance Flue Heat-Circulating Fireplace

7412647

Side Wall Protection

Adjacent combustible side walls that are within mini-
mum dimensions shown in Figure 24 of the fireplace 
opening  must be protected with CFM Corporation Wall 
Shield Model SP40 or a specifically built wall shield 
described in Figure 18.
The special wall shield design described in Figure 18 is 
an alternate method of adding protection to side walls 
and can be used in place of the SP40 with the same 
wall clearances specified for the SP40. Rt must =1.85 
minimum.

Examples of wall shield insulation:

1.  Manville - CERAFORM 126, K=.27, 
  1/2 inches thick
2.  EH2416, K = .458, 
  1 inch thick required.

Hearth Installation

A hearth extension is required to protect a combustible 
floor in front of the fireplace. Refer to Figure 21 for mini-
mum dimensions and mounting detail.

Note:  Hearth Extension must not cover the air inlet 
opening of a fireplace.

The hearth extension described in Figure 21 must be 
a durable non-combustible material with a minimum 
(total) Rt value of 1.09; refer to Figure 22 for examples. 
The overall height (above a combustible floor), depth 
and width must be as indicated, with the extension cen-
tered to the fireplace opening.
The top of insulation must be covered with a non-com-
bustible decorative covering 

or

 a piece of .018” mini-

mum sheet metal, to protect hearth extension material.  
(Fig. 21)
Secure the hearth extension to the floor to prevent 
shifting, using trim molding or other similar means at 
three (3) outer edges.  Seal crack between the fireplace 
hearth and hearth extension with a non-combustible 
material.  (Figs. 21 and 23)

Minimum Wall Clearances

WITH

Noncombustible

Surround Facing

WITHOUT

Noncombustible

Surround Facing

Minimum Hearth Extension Dimensions

(for On-Site Construction)

G

H

G

J

Seal cracks

between the 

fireplace

and hearth

extension with

noncombustible

material

Safety strips 

must overlap 

���

" minimum

May install 

noncombustible 

decorative 

covering

OR

 .018" min. 

sheet metal

Fireplace

Hearth

Combustible

Floor

Minimum

Insulation

Value "R"

4" MIN.

FP594b
BFC combustible min.
8/21/00   djt

Firebox

Opening

A -

 Min. clearance 

to combustible

perpendicular wall

B -

 Min. clearance 

to combustible

perpendicular wall when

using noncombustible wall shield*

Side

Wall

Side 

Wall

F

**

C

**

E

E

D

4" Brick

(Example material)

Combustible material permitted within shaded area.  

 * Noncombustible wall shield requires 1" EH2416 

    insulation (minimum R Value = 1.85) between decorative 

    noncombustible rigid covering and combustible wall.  

    Minimum height and width is 40" x 40".
** Dimension/degree of angle will vary depending on thickness 

    of noncombustible surround facing.

Shaded area 

starts 1/2" from 

away from edge 

of unit 4"

FP594b

Fig. 21 

 Combustible side wall protection and hearth extension dimensions.

   

J

  BFC36 

26” 

12” 

17° 

25° 

12” 

8” 

8” 

18” 

47

¹⁄₄

   

660mm  305mm 

 

 

3085mm  203mm  203mm  457mm  1200mm

Summary of Contents for 647 BFC

Page 1: ...he U S Canada Underwriter s Laboratories Report No MH6018 DO NOT DISCARD THIS MANUAL Retain for future use 7412647 8 05 Rev 10 410 Admiral Blvd Mississauga Ontario Canada L5T 2N6 905 670 7777 www majesticproducts com www vermontcastings com CFM Specialty Home Products Homeowner s Installation and Operating Manual ...

Page 2: ... with a CFM Specialty Home Prod ucts fireplace system notwithstanding any independent testing laboratory or other third party approval of such component parts or accessory Any such action may possibly cause a fire hazard Consult local building codes to ensure that you are in compliance before installing the fireplace This fireplace and chimney system must be vented to the out of doors Do not obstruct ...

Page 3: ...nge 647 BFC36 specs 8 18 00 djt 13 Dia 343mm Rough Opening Width 43 Rough Opening Height Rough Opening Depth Gas Line Access 51 1297mm 51 1297mm 1 8 3 4 m m 197mm 23 584mm 610mm 624mm 39 997mm 246mm 35 889mm 279mm Gas Line Access 902mm 36 914mm 1092mm 11 Dia 179mm 8 Dia 203mm 9 1 8 m m A B C FP1531 hearth dimensions 9 04 djt Front Width Back Width Depth A B C BFC36 32 20 17 826 mm 519 mm 451 mm FP...

Page 4: ...ftstop Standoff Surround Trim Ledge Standoff Glass Door Romex Pigtail Gas Line Access Knock out Each Side Air Inlet Basket Grate Bottom Grille Metal Safety Strip s Shown not inplace 1 2 or 3 pieces Nailing Flange Top Grille and Air Outlet Gas Line Ac cess Hole Each Side Ceiling Level Firestop Batt Insulation Cut out around firestop FP554c Fig 2 Fireplace and chase parts identification ...

Page 5: ...et of angled run of chimney Chimney supports are required for every 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 See Examples 2 and 3 Fig 3 Chimne...

Page 6: ...45 elbows in Canada per fireplace may be used 6 A guy wire stabilizer is required for chimneys extend ing more than 6 1 8m above a roof line The Ten Foot Rule Major U S building codes specify a minimum chimney height above the roof top The Ten Foot Rule is a fire safety rule and not a draft rule To ensure proper draft it is recommended that you always meet or exceed the Ten Foot Rule especially when...

Page 7: ...the chimney system should be run contact your Ver mont Castings Majestic Products dealer for assistance Installation Insulating Fireplace Enclosure for Cold Climates If you live in a cold climate it is not required but highly recommended that you insulate fireplace enclosure to eliminate cold air penetration as much as possible Insulate base of fireplace with a noncombustible insulation rated for a ...

Page 8: ... nuts must be tight NOTE Check local building codes to determine if junction box is required at the romex pigtail house wire connection Also check junction box and speed control SCVS installation instructions The Model FKSX A blower assembly is preinstalled in the BFC36 FP1062 romex pigtail 8 21 00 djt Romex Pigtail Provided Fireplace Electrical Coverplate Wire Nuts Not pro vided Ground Black Whit...

Page 9: ...ut Check to see where existing ceiling joists and other possible obstructions are located i e wiring plumbing etc If necessary re position chimney and or fireplace to avoid obstructions Cutting the Hole Cover fireplace collar opening and cut proper sized chimney hole in chimney Framing the Ceiling Hole Frame the ceiling chimney hole as shown in Figure 10 It is good practice to use framing lumber tha...

Page 10: ...in front of the fireplace This Z shaped safety strip is not provided but must be fabricated of metal with each horizontal leg at least 1 38mm wide and equal in length to the metals strips provided with the fireplace NOTE Safety strips are not required over non com bustible floors where all supports at the base of the fireplace are noncombustible Four 4 nailing flanges are supplied with the fireplace fou...

Page 11: ...minimum required air space to chimney pipe for ceiling thickness up to 8 203mm When combined thickness of ceiling material ceiling joists and flooring material exceeds 8 203mm adjustments must be made in framing to assure that minimum air spaces to chimney are maintained Proper Firestop Spacer Installation Figure 16 shows different installation procedures for both an area that is an attic and an ar...

Page 12: ...bustible insulation and roof structures WARNING Do not pack required air spaces with insulation or other materials Mark an outline of the roof hole around the center of the point nail NOTE Hole dimensions given in the chim ney top installation instructions are horizontal dimen sions therefore the hole size must be marked on the roof accordingly Cover the opening of the installed chimney so debris ...

Page 13: ...ocal building codes to determine specific requirements for your city or state NOTE Other building materials may be required in addition to firestop spacers Finishing CAUTION All joints between the finished wall and the fireplace surround top sides must be sealed with non combustible material to prevent cold air leakage into the room Only noncombustible material may be applied to the facing of the firep...

Page 14: ...ntel clearances 12 from top of grille opening 6 from top of grille opening Face Plate FP531b mantel clearances 9 03 djt 12 305mm Max 12 305mm Min 1 38mm 6 159mm Min Fig 19 Mantel clearance Combustible Mantel Shelf and Trim Finished Wall Stud Standoff Circulating Front Noncombustible Material Fireplace Opening 2 x 4 Stud Finished Wall Must be sealed with noncom bustible material Fireplace Front Sid...

Page 15: ...al to protect hearth extension material Fig 21 Secure the hearth extension to the floor to prevent shifting using trim molding or other similar means at three 3 outer edges Seal crack between the fireplace hearth and hearth extension with a non combustible material Figs 21 and 23 Minimum Wall Clearances WITH Noncombustible Surround Facing WITHOUT Noncombustible Surround Facing Minimum Hearth Extensi...

Page 16: ...ng Hearth Extension Equivalents To determine the thickness required for any new mate rial NEW K of new material per inch thickness required X of listed thickness K of listed material per inch material Example for Common Brick T new 5 0 0 458 x 0 50 in 5 46 in new required thickness FP550 BR BC SEALING DETAILS 9 29 97 Wall Covering Noncombustible Decorative Fac ing Seal all cracks between fireplace ...

Page 17: ...seal between the pipe and tube Note Gas pipe should not come in contact with any wood structures until it has reached a point at least 1 25mm away from fireplace side BTU input of a gas appliance installed in fireplace should be rated less than 100 000 BTU Hr Gas pipe installation is intended for connection to a decorative gas appliance only when 1 incorporating an automatic shutoff device and 2 com...

Page 18: ...0008275 5 Right Door Assembly Complete 20008276 6 Rear Firebrick 2353145 7 Side Firebrick two per fireplace 2353146 8 Hearth Firebrick 2353140 9 Nailing Flange four per fireplace 2422198 10 Fiberglas Rope Gasket Outer Collar 7547137 11 Top Refractory 2353147 12 Front Brick Retainer 2353163 13 Cable Clip For Blower Assembly 7522241 14 Plug Button two per fireplace 7522239 15 Door Gasket 20009567 16 Ce...

Page 19: ...6 Balance Flue Heat Circulating Fireplace 7412647 BFC Balanced Flue Fireplace continued 25 Stud 3 8 16 x 1 20009776 26 Nut Hex Jam 3 8 16 Toplk 1203290 27 Black Fall Away Handle 20006382 Ref Description BFC36 ...

Page 20: ...per ated only with CFM Specialty Home Products approved components If you use an unapproved component to make any modifications you may create a possible fire hazard and will void the CFM Specialty Home Products warranty In addition such action may void the coverage provided by the owner s insurance Accessories Hearth Extension Insulation Provides hearth extension floor protection EH2416 Grate for BR...

Page 21: ...ing is not included TT200C Adapter Kit TT8CB is required Chase Top Housing Used with chase terminations to prevent rain entry FL88 8 flue Contemporary Flashing 8 6 12 with 8 flue Required for Contemporary Round Top 0 to 6 12 pitch termination to prevent rain entry 8 12 12 with 8 flue 6 12 to 12 12 pitch Chimney Sections 8 flue 81 1 long Used to build chimney systems 818 1 long 83 3 long 84 4 long Chim...

Page 22: ...22 BFC36 Balance Flue Heat Circulating Fireplace 7412647 ...

Page 23: ... is subject to the following conditions and limitations 1 This warranty is extended only to a Fireplace installed in the con tinental United States the state of Alaska and Canada only if and so long as the Fireplace is installed according to the installation instruc tions furnished with the Fireplace and operated at all times under nor mal conditions use and service according to the operative inst...

Page 24: ...410 Admiral Blvd Mississauga Ontario Canada L5T 2N6 905 670 7777 www majesticproducts com www vermontcastings com CFM Specialty Home Products ...

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