Vermont Castings | BFC36 | Specifications | Vermont Castings BFC36 Specifications

Vermont Castings BFC36 Specifications
BFC
Balanced Flue
(Closed Combustion)
Heat-Circulating Fireplace
Model:
BFC36
Homeowner’s Installation and
Operating Manual
647
BFC cover
8/18/00 djt
For use in the U.S. / Canada
Underwriter’s Laboratories
Report No. MH7603
DO NOT DISCARD THIS MANUAL: Retain for future use.
7412647 1/13 Rev. 21
BFC36 Balanced Flue Heat-Circulating Fireplace
Table of Contents
Safety Information.......................................................................................3
Specifications and Framing .......................................................................4
Parts Identification .....................................................................................5
Chimney Requirements .............................................................................6
Planning Information...................................................................................7
Installation . ................................................................................................8
Replacement Parts...................................................................................18
Accessories .............................................................................................20
Warranty...................................................................................................23
BFC36
Listed
UL127 / ULC-S610
Standard for Factory Built Fireplaces
7412647
BFC36 Balanced Flue Heat-Circulating Fireplace
Safety Information
Please Read This Manual Before Installing and Using Fireplace
IMPORTANT: Read all instructions and warnings carefully before starting installation. Failure to follow these instructions
may result in a possible fire hazard and will void the warranty.
Any such action may possibly cause a fire hazard.
Description
The BFC36 fireplace is a solid fuel, woodburning fireplace.
The BFC36 is a balanced flue (closed combustion) heatcirculating fireplace which receives outside combustion air
through the chimney system. This unique system results
in much higher efficiency since valuable room air is not
used for combustion.
The BFC36 is a decorative fireplace which provides efficient supplemental heat compared to other wood burning
fireplaces. It should not be used as a primary source of
heat.
CAUTION: Overloading the firebox with wood may result
in overfiring and damage to refractory components, the
grate and doors.
Precautions
Vermont Castings Group fireplaces and component parts
have been thoroughly tested and will operate safely when
installed in accordance with instructions provided in this
manual. Carefully read and understand all instructions
before beginning installation.
If you notice any damage to fireplace or component parts,
immediately report damage to your Vermont Castings
Group dealer.
Only use Vermont Castings Group components or the warranty will be voided and a fire hazard may be created.
Vermont Castings Group warranty will be voided by and
Vermont Castings Group disclaims any responsibility for
the following actions:
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 or modify air inlets/outlets in any
manner.
Do not install combustible materials on any of the black
fireplace surround.
Burn only solid wood fuel or gas logs.
The BFC36 is intended for operation only with the
doors closed.
Do not install a solid fuel burning insert or other products not specified for use with this fireplace.
Proposition 65 Warning: Fuels used in gas, woodburning or oil fired appliances, and the products of
combustion of such fuels, contain chemicals known to
the State of California to cause cancer, birth defects
and other reproductive harm.
California Health & Safety Code Sec. 25249.6
WARNING: Check with your electronics manufacturer
before installing a television or other electronic device above this fireplace.
Drafts
• Installation by any other than a qualified installer,
The fireplace should not be located in areas that create
drafts (ie: frequently opened doors and central heating
air inlets/outlets) that hamper the normal flow of air into
the fire.
• Installation of any damaged fireplace or chimney
Gas Logs
preferably NFI or WETT (Canada) certified.
•
•
•
component;
Modification of fireplace, chimney assembly or
any component parts thereof; (except for chase
flashings as detailed in Vermont Castings Group
Chimney Top installation instructions).
Installation other than as instructed by Vermont
Castings Group; or
Installation and/or use of any component part
not manufactured or approved by Vermont Castings Group in combination or assembly with a
Vermont Castings Group fireplace system, notwithstanding any independent testing laboratory
or other third party approval of such component
parts or accessory.
7412647
If you plan to install a gas log, the gas line should be installed before framing the fireplace. The gas line must be
installed by a certified gas line installer.
BFC36 Balanced Flue Heat-Circulating Fireplace
BFC36 Balanced Flue Heat-Circulating Fireplace
6QE"
(624mm)
Rough
6M"
Opening
(197mm)
Depth
5156QE" (1297mm)
56O" (13mm)
56O"
(1 6"
83 (1
4m 6m
m m)
)
Rough
Opening
Height
6Q
E"
5
6"
5156QE"
(1297mm)
(9
18
m
m
)
"
(610mm)
23"
(584mm)
Rough Opening Width 43"
(1092mm)
56QE" (179mm)
56O"
(902mm)
35"
(889mm)
Gas Line
Access
3956M"
(997mm)
"
556QE"
(246mm) (279mm)
1356O" Dia.
(343mm)
11" Dia.
(179mm)
8" Dia.
(203mm)
6" Recessed
(16mm)Nailing
Flange
326"
(829mm)
"
(533mm)
36"
(914mm)
" (914mm)
41(6" (1064mm)
56QE"
(49mm)
Gas Line
Access
56QE" (176mm)
Fig. 1 BFC36 specifications and framing.
B
BFC36
647
BFC36 specs
Width
Back
8/18/00 djt
Front
A
32Z\x"
(826 mm)
Width
Depth
B
C
20M\zn"
17C\v"
(519 mm) (451 mm)
C
A
FP1531
Fig. 1a Hearth dimensions.
FP1531
hearth dimensions
9/04 djt
7412647
BFC36 Balanced Flue Heat-Circulating Fireplace
Termination Cap
Storm Collar
Pan Flashing
Batt Insulation
(Cut out around
firestop)
Draftstop
Firestop
Ceiling Level
Standoff
Trim Ledge
Standoff
Surround
Glass Door
Gas Line Access Hole
(Each Side)
Romex Pigtail
Gas Line Access Knockout (Each Side)
Air Inlet
Basket Grate
Bottom Grille
Top Grille and Air Outlet
Metal Safety Strip(s)
Shown not inplace
(1,2 or 3 pieces)
Nailing Flange
FP554c
Fig. 2 Fireplace and chase parts identification.
7412647
FP554a
BFC
Fireplace and chase parts identification
circulating model
8/21/00 djt
BFC36 Balanced Flue Heat-Circulating Fireplace
Chimney Requirements - Offset Installations
Offset
CHIMNEY FLUE EXIT
Rise
Chimney
Section
B
D
E
6 FT.
C
G
30°
Offset
Elbow
Rise
Offset
H
30°
Return
Elbow
30°
Offset
Elbow
B
FP282
30˚ Elbow Offsets
MBUF
5/26/96
G
TCS8A
Support
H
Hearth
Floor
Example 1
Example 2
Notes: G + H cannot exceed 20 feet.
Air Space Clearances: = 2” Min. to Combustibles
Illustration Key
Example 3
FP269
FP269
The following safety rules apply to
offset installations (letters correspond
with illustration above):
C. The chimney cannot be more than MBUF
30˚
(45˚ in Canada) from the vertical plane5/16/96
in
rev. 5/25
any installation*.
A. Height of the chimney is measured
from the hearth to the chimney exit.
D. The maximum length of the angled run
of the total chimney system is 20 feet. (G
plus H cannot exceed 20 feet.)
Maximum: Minimum:
Without Elbows
With 2 Elbows*
With 4 Elbows*
BFC36
50’0”
14’6”
14’6”
21’0”
B. Do not use more than 4 elbows per
chimney.
Attach the straps of the return (top)
elbow to a structural framing member.
The offset (first) elbow of any pair does
not have straps.
E. A chimney support (Model TCS8A)
is required every 6 feet 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.
1’ 1¹⁄₂' 3’ 4’
0
1
0
2
1
0
2
0
0
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
0
0
0
0
1
0
0
1
0
0
2
0
1
2
0
1
3
0
2
3
1
2
0
1
3
0
2
3
1
2
0
1
3
0
2
3
1
2
0
Chimney
Support
Elbow
A
IWF282
30°
Return
Elbow
0
0
0
0
0
0
0
1
0
1
1
0
1
1
0
2
1
0
2
1
0
2
1
3
2
1
3
2
1
3
2
4
3
2
4
3
2
4
3
5
Offset
0
3” 0 8¹⁄₄" 0 11¹⁄₄" 0 13¹⁄₂" 0 16¹⁄₂" 0 20¹⁄₄" 0 21³⁄₄" 0 26¹⁄₄" 0 28¹⁄₂" 0 31¹⁄₂" 0 34¹⁄₂" 0 37¹⁄₂" 1 41¹⁄₂" 1 45" 1 47¹⁄₄" 1 51" 1 53¹⁄₄" 1 56¹⁄₄" 1 59¹⁄₄" 1 62¹⁄₄" 1 64¹⁄₂" 1 68¹⁄₄" 1 70¹⁄₂" 1 74¹⁄₄" 2 78" 2 81" 2 84" 2 87" 2 89¹⁄₄" 2 93" 2 95¹⁄₄" 2 99¹⁄₄" 2 101¹⁄₄" 2 104¹⁄₄" 2 107¹⁄₄" 2 110¹⁄₄" 3 114" 3 117³⁄₄" 3 120" 3 123³⁄₄" Rise
11”
20"
25¹⁄₄"
29¹⁄₄"
34¹⁄₄"
40³⁄₄"
43¹⁄₂"
51¹⁄₄"
55¹⁄₄"
60¹⁄₄”
65¹⁄₂"
70³⁄₄"
77³⁄₄"
83³⁄₄"
87¹⁄₂"
94"
98"
103¹⁄₄"
108¹⁄₂"
113¹⁄₂"
117¹⁄₂"
124"
128"
134¹⁄₂"
140³⁄₄"
146"
151¹⁄₄"
156¹⁄₂"
160¹⁄₄"
166³⁄₄"
170³⁄₄"
177³⁄₄"
181³⁄₄"
186¹⁄₄"
191¹⁄₂"
196³⁄₄"
203¹⁄₄"
209³⁄₄"
213¹⁄₂"
220"
Fig. 3 Chimney system requirements.
7412647
BFC36 Balanced Flue Heat-Circulating Fireplace
Planning Information
Preplanning an installation is very important to ensure
safety and to save time and money. An installer must
predetermine where a fireplace will be set and how the
chimney system will be run.
Mounting the Fireplace
A fireplace may only be mounted on the following surfaces:
1. A flat combustible surface.
2. A raised wooden platform.
3. A concrete block or other solid object placed beneath
each of the four (4) corners of the fireplace.
The fireplace must be spaced 1” (25 mm) from a combustible back wall and 1/2” (13 mm) from a combustible side
wall or support. (Page 13, Fig. 17)
Planning the Chimney Run
Determine how the chimney will be run, length of run and
chimney components required to complete the job. (Fig. 4)
Never install a chimney below minimum heights.
LT
L1
L1
TRIPLE
WALL
81
818
83
84
TOTAL INSTALLED
LENGTH LENGTH
(LT)
(L1)
56O"
56O"
56O"
56O"
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 installing a termination on a
high pitch roof. (Fig. 5)
The key points of the “Ten Foot Rule” are:
1. If the horizontal distance from the chimney to the peak of
the roof is 10’ (3m) or less, the top of the chimney must
be at least 2’ (610mm) above the peak of the roof, but
never less than 3’ (914mm) in height above the highest
point where it passes through the roof.
2. If a horizontal distance from the chimney to the peak of
the roof is more than 10’ (3 m), a chimney height reference point is established on the surface of the roof a
distance of 10’ (3m) from the chimney in a horizontal
plane. The top of the chimney must be at least 2’ (610
mm) above the reference point, but never less than 3’
(914 mm) in height above the highest point where it
passes through the roof.
0 To 10'
2' Min.
3'
Min.
56O"
56O"
56O"
56O"
0 To 10'
2' Min.
3'
Min.
FP288a
Fig. 4 Installed lengths of chimney sections.
In planning a chimney system, it is important to know:
FP288A
Reference
Point
AC246
Fig. 5 Ten Foot Rule illustration.
1. The height of a chimney is measured from
the hearth LENGTH
MBUF-INSTALLED
AC246
Triple wall
to the exit point on the termination.
Chimney
Supports
4/1/96
1/28/99 djt
2. A chimney cannot be offset more than 30° from a vertical
The chimney system is supported by the fireplace for vertiplane.
cal chimney heights less than 30’ (9m) above the hearth.
3. A chimney may run straight up or it may be necessary
Chimney supports are required if the vertical height exto offset it to avoid obstructions.
ceeds 30’ (9m). Locate chimney supports at ceiling holes
4. The maximum length of an angled run (total chimney
or other structural framing at 30’ (9m) heights. Spacing
system) is 20’ (6 m).
between chimney supports must not exceed 30’ (9m).
Use Chimney Support Model TCS8A. (Note: The TCS8A
5. No more than 2 offsets (4 total 30° elbows in U.S./or
cannot be mounted directly to the fireplace.) Support
2 total 45° elbows in Canada) per fireplace may be
provided by elbow straps fulfills the support requirement
used.
only if they are spaced as previously described. (A chimney
6. A guy wire stabilizer is required for chimneys extending
support is 2¹⁄₂" (64mm) long when installed.)
more than 6’ (1.8 m) above a roof line.
Angled chimney runs require a support every 6’ 1.8m) in
addition to the elbow straps. Chimney supports are used
for this function. (Fig. 6)
7412647
BFC36 Balanced Flue Heat-Circulating Fireplace
Chase Installation
A chase is a vertical box-like structure which encloses the
fireplace and/or chimney. Chases are typically built on the
outside of the house with fireplace opening cut into the
outer wall of a room. (Page 4, Fig. 2)
If you need help in determining fireplace location or how
the chimney system should be run, contact your Vermont
Castings Group dealer for assistance.
Chimney Support Strap
TCS8A
FP284a
Fig. 6 Chimney support installation.
Installation
FP284a
Insulating Fireplace Enclosure
TCS8A
for Cold Climates 8/21/00
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.
Hard Flat
Surface
Insulate base of fireplace with a noncombustible insulation rated for a minimum of 300°F. Insulating is very
important for outside wall installations over a concrete
slab. If fireplace is installed on a platform, insulation
should be placed on top of the platform before fireplace
is set. (Fig. 7)
When a fireplace is installed in a chase or on a outside
wall, enclosure should be treated like any outside wall
in a home. Insulation should be installed on the inside
wall as well as the outside wall(s). In a chase, 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 sheeting material to assure the space around the fireplace is
totally protected. (Fig. 2)
When installing the chimney, DO NOT caulk between
outer pipe and firestop. It is vital that some air be allowed
to flow through this very thin gap.
CAUTION: When installing a fireplace in an insulated enclosure, be sure all required air spaces are
maintained. (Page 13, Fig. 17)
Insulation
Platform
FPC555a
Fig. 7 Insulating between platform and fireplace.
Framing
FPC555a
Framing can be constructed before or after the fireplace
Platform insulation
is set in place, however, most installers build the frame
BFC model
before setting the fireplace.
Frame fireplace with 2 x 4 lumber8/21/00
or heavierdjt
materials.
Refer to framing dimensions in Figure 1 for basic fireplace
specifications.
NOTE: Framing should be positioned to accommodate
wall covering and fireplace facing material.
7412647
BFC36 Balanced Flue Heat-Circulating Fireplace
Electrical Wire Installation
The fan requires 120V AC, 60 Hz power which may be
connected from the right side of the fireplace. This power
connection must be completed before the fireplace is secured and finish material applied.
NOTE: Refer to instruction sheet for Model SCVS Variable
Speed Fan control for speed control wiring schematic.
The lower cavity of the fireplace may be accessed by
removing the lower grille. Lift grille and pull lower side out
to remove.
1. If using romex type power supply wiring, install a strain
relief fitting into the small access hole in the lower right
side of the fireplace outer wrapper.
2. Route house power wires into the fireplace through the
fitting.
3. Extend these wires through large front hole of right side
floor support.
4. Using supplied junction box assembly, connect and
secure house romex wiring to duplex outlet. Ensure
correct polarity and that the ground wire is securely
connected.
5. Secure romex wiring using supplied strain relief fitting
at rear of junction box. Re-assemble junction box.
6. Secure romex wiring at strain relief fitting in fireplace
outer wrapper.
7. Mount junction box mounting plate to inside face of right
side floor support using two self-tapping sheet metal
screws.
8. Plug blower cord into duplex outlet.
9. Replace lower grille.
Chimney Set-up
Since you have already preplanned the chimney run,
you should know exactly how the installation is to be accomplished — how much pipe is required, the number of
elbows, if any, and type of termination to be used.
CAUTION: REPORT TO YOUR DEALERS ANY PARTS
DAMAGED IN SHIPMENT, SPECIFICALLY CHECK THE
END CONNECTION OF CHIMNEY SECTIONS AND
ELBOWS.
Note: The BFC36 fireplace must use Vermont Castings
Group Model triple wall 8” chimney components only. The
installation procedure described in this manual applies
only to this system.
Straight-Up Chimney Installation
To mark the centerline of the flue, put the fireplace in final
position and measure out from the wall: 8³⁄₄" (222 mm).
Mark a spot on the ceiling directly above the fireplace. Draw
a line parallel to the back wall through this mark. (Fig. 8)
7412647
Using a plumb bob positioned directly over center point
of fireplace flue collar, mark the ceiling to establish the
chimney center point. (Fig. 8)
Chimney Centerline
Actual Centerpoint
86M"
(222mm)
Plumb Line
Plumb Bob
Imaginary Centerpoint
FPC556a
Fig. 8 Locate centerline of chimney with plumb line.
Offset Installation
In order to clear an obstruction, it may be necessary to
offset chimney from vertical. This is accomplished by using elbows. Use the 30° Offset Elbow table on Page 5 to
determine proper offset and parts required.
Each offset requires two (2) elbows.
The second elbow is
FPC556a
equipped with support straps. ItBFC36
is very important to install
the second elbow in each offset
as close
to theLINE
ceiling
LOCATE
CENTER
or support as possible so that Circulating
the elbowmodel
straps can be
djt
secured to framing members to8/21/00
help support
the weight
of the chimney.
Determine offset distance of your chimney arrangement
from centerline of fireplace to centerline of chimney where
it is to pass through ceiling.
Locate center point of the chimney on ceiling as though a
straight up chimney arrangement is to be used. Measure
your offset dimension from straight up chimney center
point on ceiling.
BFC36 Balanced Flue Heat-Circulating Fireplace
Ceiling Chimney Hole/
Possible Obstructions
The 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 will be cut.
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.
Positioning, Safety Strips,
Securing the Fireplace
Slide fireplace into position.
Lift the fireplace front slightly and slide the metal safety
strips under front bottom edge about 1¹⁄₂” (38 mm), allowing
the remainder to extend in front of firebox. Overlap strips
at least 1/2” (13 mm) to provide a positive joint. (Flat safety
strips are packed with fireplace.) (Fig. 11)
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 9. It is
good practice to use framing lumber that is the same size
as the ceiling joists; this is a requirement at attic level.
Existing
Ceiling
Joists
17¹⁄₂”
(445mm)
Metal Safety Strips
(1,2 or 3 pcs.)
17¹⁄₂”
(445mm)
Fireplace
Chimney
Hole
1¹⁄₂”
(38mm)
New
Framing
Members
Platform
Hearth Ext.
FP557b
Fig. 11 Safety strip installation.
Ceiling
FP551b
Fig. 9 Typical frame for ceiling chimney hole.
FP551b
The following table gives
17 firestop
1/2" spacer model numbers:
Framing chimney hole
5/13/99
djt
Chimney
Hole Size
Angle of Chimney at Ceiling
Size of Chimney
Vertical
30°
FS2A
FS6A
8” Flue
17¹⁄₂” x 17¹⁄₂”
17⁷⁄₈” x 29⁵⁄₈”
(445 x 445mm) (454 x 753mm)
Fig. 10 Ceiling chimney hole sizes necessary for installing
firestop spacer.
The inside dimension of the frame must be the same as
the hole size selected from Figure 10 in order to provide
required the 2” (51 mm) air space between the outside
diameter of the chimney and the edges of the framed
ceiling hole.
10
¹⁄₂” (13mm)
Min. Overlap
“Z” Safety
Strip
(not supplied)
Safety strips are used to ensure that any combustible
WF557 materials in front of the fireplace are protected even
BR though a
non-combustible hearth extension is required.
11/10/97
If fireplace is to be elevated above the floor, a “Z” shaped
metal safety strip must be fabricated and used to protect
combustible surfaces 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 1¹⁄₂” (38mm) wide
and equal in length to the metals strips provided with the
fireplace.
Note: Safety strips are not required over non-combustible
floors where all supports at the base of the fireplace are
noncombustible.
Four (4) nailing flanges are supplied with the fireplace
(found on the fireplace hearth). To level the box and secure it firmly in place, remove the nailing flanges from the
hearth and install at the sides of the fireplace as shown
in Figure 12.
7412647
BFC36 Balanced Flue Heat-Circulating Fireplace
Nail Top
Standoffs
Elbow Strap
Support Structure
Elbow Strap
(must be tight)
Nail SideNailing
Flanges
Ceiling Hole
Framing
Angled Strap
Angled Firestop
FPC549a
Fig. 12 Fasten fireplace in position.
FP270/271
Installing the
FPC549a
Chimney System
BFC
Nail flange/standoff
Start by attaching the first chimney
section to the collar on
circulating models
top of the fireplace.
8/21/00 djt
Install the pipe as pictured in Figure 13. When you get
a good lock, you will hear the pipe clearly snap together.
Once sections are snap-locked in place, it is extremely
difficult to get them apart. Make sure the pipe is firmly
snapped and locked together as each pipe section is
mounted.
Pipe Section
UP
Pipe
Rim
Hem
Pipe
Hem
Lance
Chimney Support Strap
(must be tight)
Fig. 14 Attach straps to a structural framing
member.
FP270/271
CR Series
Installing the Firestop
Spacer
2/19/99
djt
in the Ceiling Hole
A firestop spacer 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 sizes listed in Figure 10 for angled firestop spacers
provide minimum required air space to chimney pipe for
ceiling thickness up to 8” (203 mm). When combined
thickness of ceiling material, ceiling joists and flooring
material exceeds 8” (203 mm), adjustments must be made
in framing to assure that minimum air spaces to chimney
are maintained.
Proper Firestop Spacer Installation
Figure 15 shows different installation procedures for both
an area that is an attic and an area that is not an attic.
If the area above the ceiling is not an attic, position the
firestop spacer with the flange on the ceiling side and the
angled portion extending up into the hole.
FPC558a
If the area above the ceiling is an attic, position the firestop
spacer with the flange on the top of the framed hole and
the angled portion extending down into the hole.
Fig. 13 Install pipe, listening for the snap-lock to fasten.
Firestop spacers are not available for, nor are they required
on vertical walls.
When installing elbows, only outer pipe will snap- lock.
Middle pipes simply slide into position. Be sure to always
attach straps on upper elbow to a structural framing member. (Fig. 14)
DO NOT put any sealant around the area where the outer
pipe slides through the firestop spacer. If you seal this
area, it may cause a fire hazard.
Continue installing the pipe as required until pipe is installed
up through the ceiling. At this point, you must install a
firestop spacer.
7412647
FPC558a
BFC
Pipe install
Circulating models
8/21/00 djt
11
BFC36 Balanced Flue Heat-Circulating Fireplace
Ceiling Installation
Attic Installation
Nails (4)
Joist
Firestop
Spacer
Firestop
Spacer
Joist
Nails (4)
NOTE: If the attic insulation shield is used, the
firestop is not required in the attic installation.
FP593
Fig. 15 Installing firestop spacer.
Continue Installing
Pipe to Complete Run
Canadian Requirements
for Insulation Shield
FP593
SR/C Continue attaching pipe sections to complete system to
In Canada, an attic insulation shield is required to 11/20/97
prenext level always being careful that the pipe is firmly snapvent attic insulation from contacting the chimney section.
NOTE: If the attic insulation shield is used, the firestop is
not required in the attic installation. Framing dimensions
for the chimney hole should measure 17¹⁄₂” x 17¹⁄₂” (445 x
445 mm). An attic shield MUST be installed on top of attic
joists (above the floor level). (Fig. 16)
Attic Insulation Shield
Nails
(4 required)
locked in place before proceeding to next pipe section.
Chimney Supports
If chimney supports are required, they are installed the
same as elbows. Nail chimney support straps to adjacent
structural framing, as shown on Page 8, Figure 8. Bend
straps as necessary and make sure they are secure so
they will support the weight of the chimney. A chimney
support is 2¹⁄₂" (64 mm) long when installed. Consider this
dimension when determining how many straight chimney
sections are needed.
Note: Chimney supports are generally used in long runs
in a chase installation.
Additional Ceilings
Attic Joist
Ceiling
Base Flanges
Penetrating the Roof
FP263
Fig. 16 Attic shield installation (Canadian requirement).
NOTE: In the U.S., it is a good idea, although not always
required, to install an atticIGF263
insulation shield where blown-in
MBUF
insulation is planned to be
used in the attic.
5/9/96
If you encounter additional ceilings, repeat same steps
required for first ceiling installation. See firestop illustration
in Page 11, Figure 15.
Install the attic insulation shield with the flanges on its base
extending down into the framing hole. Nail each corner
of attic insulation shield to the framing members of the
ceiling hole using 8d nails. Attic shields are not required
at the roof.
Run pipe to roofline. Since chimney system must be vented
to the out-of-doors, you must use an approved Vermont
Castings Group termination.
If a chase is used, refer to the installation manual provided
with the termination cap.
Locate Chimney Centerpoint On Roof
Use same procedure detailed in locating center point of
the flue system.
Drive a nail up through roof at the center point. This will
determine center point on outside of the roof.
Cut and Frame Roof Hole
Size of roof hole varies with the type of chimney termination installed. Refer to installation instructions provided
12
7412647
BFC36 Balanced Flue Heat-Circulating Fireplace
with Vermont Castings Group chimney termination to find
correct size of roof hole.
There must be a 1¹⁄₂” (38 mm) air space between outermost
portion of chimney sections and any adjacent combustible
surfaces. (Combustible surfaces include burnable materials such as: ceiling members, joists, flooring, combustible
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 chimney
top installation instructions are horizontal dimensions;
therefore, the hole size must be marked on the roof accordingly.
Cover the opening of the installed chimney so debris cannot get into the system.
Cut and frame the hole. It is good practice to use framing
lumber that is the same size as the rafters. Install the frame
securely because the chimney top and flashing anchored
to the frame must be able to withstand heavy winds.
Finish Wall
Finish the wall with material of your choice. Do not install a
combustible mantel shelf less than 12” (305 mm) above
the grille opening. Do not install a mantel face plate less
than 6” (159 mm) from top of grille opening. (Fig. 20)
If a combustible material is used below a flat mantel shelf,
consult your local building codes for minimum clearance
from top of fireplace opening to bottom of mantel shelf.
All joints (top, bottom and sides) where wall or decorative
facing material meets fireplace surround must be completely sealed with a noncombustible material. (Figures
18 and 19)
Note: No side wall protection is required for fireplaces
installed at 45° to two (2) side walls (corner installation).
Air Space Clearances
Combustible framing material MUST NOT
penetrate AIR SPACE (shaded areas).
Install Remainder of Chimney Sections
Since you have already preplanned the height of your
termination according to the Ten Foot Rule, continue to
install pipe to the predetermined height.
Check the chimney top installation instructions for details
on how high above the roof top the chimney sections (all
pipes) should extend.
Installing Top Housing
or Termination
2”
Standoff
¹⁄₂” air space to
sides
FRONT VIEW
Follow the installation instructions provided with the
Vermont Castings Group chimney termination you have
selected.
SIDE VIEW
Firestop
Installing Chimney in a Chase
Wall
Shield
Refer to Page 4, Figure 2 for an illustration of a typical
chase installation.
1” Air
Space to
Back
CAUTION: Treatment of firestop spacers and construction
of chase may vary with type of building. These instructions
are not a substitute for local building codes. You must
check your local building codes to determine specific requirements for your city or state. Note: Other building
materials may be required in addition to firestop spacers.
¹⁄₂” Air
Space to
Sides
Finishing
CAUTION: All joints between the finished wall and the
fireplace surround (top/sides) must be sealed with noncombustible material to prevent cold air leakage into the
room. Only noncombustible material may be applied to
the facing of the fireplace surround. (Black painted area)
(Fig. 17)
Only noncombustible material
may be applied as
facing to the black
fireplace surround.
0” Clearance to
Floor
Hearth Extension
FPC559a
Fig. 17 Minimum clearances to combustibles.
7412647
13
FPC559a
BFC
AIR SPACES
circulating mode
BFC36 Balanced Flue Heat-Circulating Fireplace
Combustible
Mantel Shelf
and Trim
12"
(305mm)
Max.
Finished Wall
1Z\x"
(38mm)
Stud
12" (305mm)
Min.
Standoff
6"
(159mm)
Min.
Noncombustible
Material
Circulating
Front
Fireplace Opening
Side View
Z\x"
2 x 4 Stud
Finished Wall
Fireplace
Front
Must be sealed with noncombustible material
FP531b
Fig. 18 Mantel clearance.
FP531b
mantel clearances
9/03 djt
Face Plate
*
1Z\x"
Ref.
* 12” from top of grille opening.
** 6” from top of grille opening.
C
B
**
Combustible materials are
permitted within a shaded area
shown in Figure 21 titled
Minimum Wall Clearances.
MA81
Fig. 19 Combustible mantel clearances.
14
7412647
MA81
rev. 8/5/97
BFC36 Balanced Flue Heat-Circulating Fireplace
Side Wall Protection
Hearth Installation
Adjacent combustible side walls that are within minimum
dimensions shown in Figure 23 of the fireplace opening
must be protected with a specifically built wall shield as
described in Figure 17.
A hearth extension is required to protect a combustible floor
in front of the fireplace. Refer to Figure 20 for minimum
dimensions and mounting detail.
The special wall shield design described in Figure 18 is
an alternate method of adding protection to side walls. Rt
must =1.09 minimum.
Examples of wall shield insulation:
1. Manville - CERAFORM 126, K=.27,
1/2 inches thick
2. EH2416, K = .458,
1 inch thick required.
Note: Hearth Extension must not cover the air inlet
opening of a fireplace.
The hearth extension described in Figure 20 must be a
durable non-combustible material with a minimum (total)
Rt value of 1.09; refer to Figure 21 for examples. The
overall height (above a combustible floor), depth and width
must be as indicated, with the extension centered to the
fireplace opening.
The top of insulation must be covered with a non-combustible decorative covering or a piece of .018” minimum sheet
metal, to protect hearth extension material. (Fig. 20)
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.
20 and 22)
WARNING: Hearth extension must be installed in ac-
Minimum Hearth Extension Dimensions
Minimum Wall Clearances
WITH
Noncombustible
Surround Facing
WITHOUT
Noncombustible
Surround Facing
Shaded area
starts 1/2" from
away from edge
of unit
4"
4" Brick
(Example material)
E
Firebox
Opening
F**
E
D
A - Min. clearance
to combustible
perpendicular wall
C**
Side
Wall
(for On-Site Construction)
Side
B - Min. clearance
Wall
to combustible
perpendicular wall when
using noncombustible wall shield*
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.
H
G
G
J
May install
noncombustible
decorative
covering
OR .018" min.
sheet metal
Seal cracks
between the
fireplace
and hearth
extension with
noncombustible
material
Fireplace
Hearth
4" MIN.
Combustible
Floor
1/2” Min.
EH2416 or
equal “R”
value
Safety strips
must overlap
56O" minimum
A
B
C
D
E
F
G
H
J
BFC36 26”
12”
17°
25°
12”
8”
8”
18”
47¹⁄₄”
660 mm 305 mm
305 mm 203 mm 203 mm 457 mm1200 mm
FP594b
Fig. 20 Combustible side wall protection and hearth extension dimensions.
7412647
FP594b
BFC combustible min.
8/21/00 djt
15
BFC36 Balanced Flue Heat-Circulating Fireplace
cordance with Figure 22 and must not cover the bottom
front opening of the circulating model.
Alternate noncombustible materials may be used providing
the (total) thermal resistance (Rt value) of the alternate
material employed is greater than or equal to R = 1.09
Thermal resistance (R) or thermal conductivity (K), may be
obtained from manufacturer of the material. Factors are
related by the formula K = 1/R. (Fig. 21)
T = given thickness
R = thermal resistance for a given thickness (T)
K = thermal conductivity
Noncombustible material with a lower R value may be
used, provided thickness of material is sufficiently greater
to maintain an equivalent (total) thermal resistance (Rt).
COMMON MATERIALS AND FACTORS
MATERIAL
EH2416
Micor 300
K*
R
0.458 1.09
Common Brick 5.0
0.10
MINIMUM
THICKNESS
Wall Covering
Side View
Noncombustible
Decorative Facing
2 x 4” Header
- Do not notch at
standoffs
Seal all cracks
between fireplace
surround and wall materials with noncombustible material.
Noncombustible Decorative
Covering
Hearth Extension Insulation
Seal crack between
fireplace and hearth
extension with noncombustible material
FP550
Safety Strips Must be overlapped 1/2”
minimum
0.50 in.**
Fig. 22 Sealing gaps.
5.46 in.**
Glass Door Operation
FP550
R Value is for 1/2 inch.
* Units of K = BTU/SQ FT/HR/˚F/IN
** Thickness of Listed Material
FP533ADD
- SEALING
The BFC36 is intended for useBR/BC
only with
the doors fully
DETAILS
closed. (Fig. 23)
9/29/97
Fig. 21 Hearth extension material factors.
FP533ADD
Example of Determining
Hearth Extension EquivaAddendum
lents
6/1/99 djt
8/4/99 required
changed .2
.1 new mateTo determine the thickness
forto any
one inch to 1/2 inch djt
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).
16
Correct
Wrong
KT108b
Fig. 23 Correct door position.
KT108b
BFC
Correct door position
8/23/00 djt
7412647
BFC36 Balanced Flue Heat-Circulating Fireplace
Operation
Before the first fire, the location of the upper refractory
baffle (ceiling panel) should be checked. This part floats
intentionally and may move out of place during shipping
or installation of the fireplace. If the baffle is out of place,
the resulting improper air flow will cause dirty glass and
improper combustion. The baffle should be centered sideto-side between the refractory sidewalls and be pulled forward (toward the glass doors) until it rests on the front
sheet metal ledge.
Refer to the publication “How to Enjoy Your Woodburning
Fireplace” for starting and maintaining a wood fire.
Note that the BFC36 does not have a damper to open or
close. This is a tremendous efficiency increasing advantage since there is no damper to potentially leave open
after a fire dies down. House air will not escape up the
chimney. Note also that the doors should remain closed at
all times except when starting or reloading a fire.
Burn only seasoned firewood. Typically, only two or three
burning logs are needed to provide efficient supplemental
heat and a bright decorative fire. In general, fresh wood
should not be loaded higher than about 2/3 the height of
the firebox.
Installing Line for Gas Logs
Vermont Castings Group fireplaces are designed to accept
a 1/2” (13 mm) gas line for installation of an approved gas
appliance. (Vermont Castings Group manufactures a wide
variety of gas logs for use in Vermont Castings Group
fireplaces.)
Be sure to have the appliance installed in accordance with
building codes.
Gas connection may enter from either left or right side of
the fireplace.
Locate appropriate gas line in the outer casing of fireplace
and remove insulation from gas line tube. (Fig. 24)
From inside the fireplace, locate the knockout on the firebrick -- be sure you are on the appropriate or “gas line” side
of the fireplace. Using a flat bladed screwdriver or small
chisel and hammer, carefully tap around the knockout until
it loosens and falls out.
Install 1/2” (13 mm) certified gas pipe through opening.
After gas pipe installation is complete, use insulation that
was removed from gas line tube to repack space around
the pipe. Material should be inserted from outside of the
fireplace and packed tightly to totally seal between the
pipe and tube.
Hole in Outer Casing
Gas Line
Tube
Fireplace Top View
1"
Min.
Supply
Line
Ceramic
Knockout
Repack Insulation
1/2"
Hole in
Outer Casing
Ceramic Knockout
(both sides)
FP560a
Fig. 24 Gas line access.
FP560a
BFC
line knockout
BTU input of a gas appliance installed Gas
in fireplace
should
8/00
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.) complying with the Standard
for Decorative Gas Appliances for Installation in Vented
Fireplaces (ANSI Z21.60) or CSA draft requirements for
Gas-Fired Log Lighters for Woodburning Fireplaces (Draft
No. 4, August 1993).
Decorative gas appliance should be installed in accordance
with the National Fuel Gas Code, ANSI Z223.1/NFPA 54
(latest edition).
CAUTION: When using decorative gas appliance, flue damper must be set in fully open
position. Glass doors on the fireplace must
also be fully opened.
WARNING: Do not operate an unvented gas
log set in this fireplace with the chimney removed.
WARNING: When installing an unvented gas
log set, the model CABL or CABR 4” adjustable hood must be used.
Note: Gas pipe should not come in contact with any
wood structures until it has reached a point at least 1”
(25 mm) away from fireplace side.
7412647
17
BFC36 Balanced Flue Heat-Circulating Fireplace
4
3
1
5
2
6
8
10
15
9
16
14
7
12
11
13
18
29
17
26
27
28
21
19
23
20
22
25
24
23
Vermont Castings Group reserves the right to make changes in design, materials, specifications, prices and discontinue colors and products at any
time, without notice.
BFC Balanced Flue Fireplace
Ref.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
18
Description
Top Grille - Painted
Bottom Grille - Painted
Grate Assembly
Left Door Assembly Complete
Right Door Assembly Complete
Rear Firebrick
Side Firebrick (two per fireplace)
Hearth Firebrick
Nailing Flange (four per fireplace)
Fiberglas Rope Gasket (Outer Collar)
Top Refractory
Front Brick Retainer
Cable Clip (For Blower Assembly)
Plug Button (two per fireplace)
Left Door Gasket
Right Door Gasket
647
BFC parts 2008
2/08 djt
BFC36
3126160
3126160
7579218
30004361
30004362
2353145
2353146
2353140
2422198
7547137
2353147
2353163
7522241
7522239
20013999
20013998
7412647
BFC36 Balanced Flue Heat-Circulating Fireplace
BFC Balanced Flue Fireplace
Ref.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
Description
Blower Assembly - FKSX-A
Grate Retainer
Junction Box Assembly
Ceramic Glass Panel (two per fireplace)
Flat Gasket 3/4” Wide (two per fireplace)
Knob (two per fireplace)
Bushing (four per fireplace)
Pan Hd, PH 1/4-20 x 1 Black (two per fireplace)
Spacer (two per fireplace)
Spring Clip
#8-18 x 1/2” Decorative Screw
Hinge Spacer (two per fireplace)
BFC Door Assembly
7412647
(continued)
BFC36
20000620
2353179
3126161
30004352
20013997
1600657
1201895
1200907
1600070
30004450
7521180
30004360
20014006
19
BFC36 Balanced Flue Heat-Circulating Fireplace
Accessories
The following accessories for this appliance are available from your local Vermont Castings Group distributor. Should you
need additional information beyond what your distributor can furnish, contact: Vermont Castings Group, 149 Cleveland
Drive, Paris, KY 40361, Attn: Technical Services.
CAUTION: This fireplace and chimney assembly is a highly engineered system, and, as such, must be operated
only with Vermont Castings Group approved components. If you use an unapproved component to make any
modifications, you may create a possible fire hazard and will void the Vermont Castings Group warranty. In
addition, such action may void the coverage provided by the owner’s insurance.
Accessory
Description
Hearth Extension Insulation
Grate for BR/BC36/42
Hearth Patch Compound
Provides hearth extension floor protection
Holds firewood in firebox
Patch cracks in hearth
Model Number
EH2416
RBG-BFC36
HPC-1
See your Vermont Castings Group Fireplaces
distributor or dealer for finishing Marble and
Mantels, available in a wide selection of styles.
20
7412647
BFC36 Balanced Flue Heat-Circulating Fireplace
Chimney Components
Component
Chimney Support
Description
Model Number
Used to support chimney for each of TCS8A
30’ vertical height and 6’ of angled chimney run (8” flue)
Firestop
Required at each floor level and attic on FS2A (8” straight flue)
multi-story installation
FS6A (8” 30° inclined flue)
Attic Insulation Shield
Required in Canada
FS2100HT
Traditional Top Housing
Top housing of simulated brick pattern
T20B
available in red, tan or white. Appropriate (single flue)
adapter is required (8CA). Flashing included.
TL20B
(extra tall single flue)
Housing Extension
Extends Traditional Top Housing on 202036
steep pitched roofs (single flue)
Contemporary Chase Top
Used to terminate chimney at the top of a
Termination
chase. Flashing 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 (1¹⁄₂’ long)
83 (3’ long)
84 (4’ long)
Chimney Elbows
Used to develop offset chimney systems.
Only 30° elbows are available. (Elbows
830A-2
packed 2 per carton - upper and lower (8” 30° flue)
elbow set.)
Round Top Termination
Used to terminate chimney on the roof.
RT8C
Flashing not included. (8” flue)
Extended Round Top Chase
Used to terminate chimney at the top of a RT8CL
Termination
chase. Adapter Kit included. Flashing not (8” flue)
included.
Adapter Kit
Required to connect triple-wall chimney
8CA
with Traditional Top Housing (T20B or TL20B) (8” flue)
Adapter Kit
Required to unite chimney with
TT8CB
Contemporary Chase Top. (TT200C)
7412647
21
BFC36 Balanced Flue Heat-Circulating Fireplace
22
7412647
BFC36 Balanced Flue Heat-Circulating Fireplace
LIMITED WARRANTY
Factory-Build Fireplace and Components
(Except Blowers)
What is Covered and For How Long
Five-Year Coverage: For five years from the date this fireplace and components are first purchased for use, Vermont
Castings Group will, at its option, repair or replace any defective part of this fireplace or components, or refund to you a
sum not to exceed the factory retail price in effect at the time of purchase.
Ten-Year Coverage: From the sixth through the tenth year following the date this fireplace or accessory is first purchased for use, Vermont Castings Group will make available to you, at our factory, a free replacement for any defective
part in this fireplace or accessory.
Twenty-Five-Year Availability of Replacement Parts: From the eleventh through the twenty-fifth year following the
date this fireplace or accessory is first purchased for use, Vermont Castings Group will make available at our factory
replacement parts for this fireplace or accessory, which you may purchase for the list price current at the time your
purchase order is received.
What is Not Covered
•
•
•
•
•
•
•
•
•
•
•
This limited warranty does not cover:
Transportation or shipping cost.
The cost of a service call to diagnose trouble.
Painted surfaces.
Damage or defect caused by improper installation, accident, misuse, abuse or alteration.
Poor ventilation of smoke or gases caused by air-conditioning and heating systems, exhaust fans, or pressure differentials produced by wind.
Broken glass components.
Cracks in ceramic and castable parts that do not affect safe operation.
We do not warrant this fireplace to be in compliance with your local building code. Building codes vary greatly
throughout the country, and you should determine whether 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 or around the fireplace.
Also, under our five year coverage, we do not pay the cost of removal and replacement of any portion of the structure in
which the fireplace is situated, made necessary by the repair, removal or re-installation of the fireplace.
And under our twenty-five year warranty of availability of replacement parts, we only promise to maintain a supply of
replacement parts at our factory for you to purchase.
Limitations and Exclusions
1. No one has authority to add to or vary this limited warranty, or to create for Vermont Castings Group any other obligations of liability in connection with this fireplace and accessory.
2. Vermont Castings Group shall not be liable for incidental, consequential, special or contingent damages you might
suffer as a result of its breach of this written warranty or any implied warranty. Some states do not allow the exclusion
of limitation of incidental or consequential damages, so the above limitations may not apply to you.
3. This warranty applies only to a fireplace sold and used in the United States.
For information about this warranty, contact:
Vermont Castings Group
7412647
149 Cleveland Drive
Paris, Kentucky 40361
23
BFC36 Balanced Flue Heat-Circulating Fireplace
Vermont Castings Group
149 Cleveland Drive • Paris, Kentucky 40361
www.Vermont Castings Group.com
24
7412647
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