Vermont Castings Royal Collection WMC36 Mounting instructions
For use in U.S./Canada
Underwriter's Laboratories
Report No. MH7603
20000583 1/13 Rev. 31
FP583A
WMC
12/18/98
Homeowner's Installation
and Operating Manual
2
WMC Series Woodburning Fireplace
20000583
Read all instructions and warnings carefully before starting installation. Failure to
follow these instructions may result in a possible re hazard and will void the warranty.
The WMC Series replaces are solid fuel, woodburning
premium replaces. The WMC36/42 are circulating models
with removable grilles (louvers).
Both models are fully insulated replaces.
Vermont Castings Group replaces and component parts
have been highly tested and will operate safely when
installed in accordance with instructions provided in this
manual. Carefully read and understand all instructions
beginning installation.
If you notice any damage to replace or component parts,
immediately report damage to your Vermont Castings
Group dealer.
Only use Vermont Castings Group components or the war-
ranty will be voided and a re hazard may be created.
Vermont Castings Group warranty will be voided by and
Vermont Castings Group disclaims any responsibility for
the following actions:
•
•
•
(except for chase
ashings as detailed in the Chimney Top installation
instructions).
•
•
Consult local building codes to ensure that you are in
compliance installing the replace.
Fireplaces must be vented to the out-of-doors.
Safety Information . . . . . . . . . . . . . . . . . . 2
Specications and Framing . . . . . . . . . . 3
Parts Identication . . . . . . . . . . . . . . . . . 4
Chimney Requirements . . . . . . . . . . . . . 5
Planning Information . . . . . . . . . . . . . . . . 6
Installation ....................... 7
Replacement Parts . . . . . . . . . . . . . . . . 18
Accessories ...................... 19
Fuels used in gas, woodburn-
ing or oil red appliances, and the products of combus-
tion 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
The replace should not be located in areas that create drafts
(ie: frequently opened doors and central heating air inlets/
outlets) that hamper the normal ow of air into the re.
If you plan to install a gas log, the gas line should be installed
framing the replace. The gas line must be installed
by a certied gas line installer.
3
WMC Series Woodburning Fireplace
20000583
50" (1270mm)
42"
(1067mm)
35Z\v" (895mm)
46" (1168mm)
B\,"
(16mm)
B\," (16mm)
Z\x" (13mm)
Z\x"
19C\v" (502mm)
1C\v"
(45mm)
38" (965mm)
21"
(533mm)
7C\v"
(197mm)
7Z\x"
(191mm)
Recessed
Nailing Flange
FP592A
WMC42 SPECS
1/28/99
13C\," Dia.
(340mm)
Rough Opening Width 47"
Rough
Opening
Height
Rough
Opening
Depth
Gas Line
Access
50" (1270mm)
70Z\x" (1791mm)
8Z\v"
(210mm)
22"
(559mm)
22Z\x"
(572mm)
26Z\v"
(667mm)
40C\v"
(1035mm)
14B\,"
(372mm)
15C\,"
(391mm)
9Z\x"
(241mm)
36B\,"
(930mm)
3"
(76mm)
8"
(203mm)
7Z\x"
(191mm)
Outside Air
Electrical
Access
11" Dia.
(279mm)
(1194mm)
Gas Line Access
8" Dia.
(203mm)
36" (914mm)
WMC42 Series specications and framing.
FP592A
FP590A
WMC36 SPECS
1/28/99 djt
B\," (16mm)
Z\x" (13mm)
Z\x"
36"
(914mm)
35Z\v" (895mm)
40" (1016mm)
B\,"
(16mm)
19 C\v" (502mm)
1C\v"
(45mm)
35Z\x" (902mm)
21"
7C\v"
(197mm)
7Z\x"
(191mm)
Recessed
Nailing Flange
11" Dia.
(279mm)
Rough Opening Width 41"
Rough
Opening
Height
Rough
Opening
Depth
Gas Line
Access
47" (1194mm)
47" (1194mm)
66Z\v" (1683mm)
8Z\v"
(210mm)
22"
(559mm)
22Z\x"
(572mm)
22" (559mm)
40C\v"
(1035mm)
14B\,"
(372mm)
15C\,"
(391mm)
9Z\x"
(241mm)
36B\,"
(930mm)
3"
(76mm)
8"
(203mm)
7Z\x"
(191mm)
Outside Air
Gas Line Access
Electrical
Access
8" Dia.
(203mm)
33C\v" (857mm)
(1041mm)
FP590A
WMC36 Series specications and framing.
4
WMC Series Woodburning Fireplace
20000583
Insulation methods shown are optional
for cold climate, not a requirement for
unit operation.
FPC554
Fireplace and chase parts identication.
Termination Cap
Storm Collar
Pan Flashing
Draftstop
Top Shield
Surround
Outlet Grille
Damper
Control
Gas Line Knockout
(both sides)
Screen
Grate
Firebox
Metal Safety Strips
(1, 2 or 3 pieces)
Inlet Grille
Outside Air
Cover Plate
Electrical Access
Gas Line Access
(both sides)
Nailing Flange
Standoff
Batt Insulation
(cut out around restop)
Firestop
Ceiling Level
A
B
C
FP1531
hearth dimensions
9/04 djt
WMC36 33Z\x" 20Z\v" 18Z\v"
(851 mm) (514 mm) (464 mm)
WMC42 39B\," 23C\," 18Z\v"
(1007 mm) (594 mm) (464 mm)
FP1531
Hearth dimensions.
5
WMC Series Woodburning Fireplace
20000583
D
RISE
BG
H
B
OFFSET
C
E
6 FT.
G
H
A
HEARTH
FLOOR
CHIMNEY
SECTION
CHIMNEY FLUE EXIT
ELBOW
FPC269
Chimney Requirements -typ. offset
Circulating models
1/28/99 djt
30˚
OFFSET
ELBOW
30˚
OFFSET
ELBOW
30˚
RETURN
ELBOW
30˚
RETURN
ELBOW
SKCS8
SUPPORT
Example 1 Example 2 Example 3
¹⁄₂
The following safety rules apply to
offset installations (letters correspond
with illustration above):
Height of the chimney is measured
from the hearth to the chimney exit.
WMC36 WMC42
Maximum: 90' 90'
Minimum:
Without Elbows 12' 6" 12' 6"
With 2 Elbows* 15' 0" 15' 0"
With 4 Elbows* 21' 0" 21' 0"
Do not use more than 4 elbows per
chimney.
Attach the straps of the return (top)
elbow to a structural framing member.
The offset (rst) elbow of any pair does
not have straps.
FPC269
IWF282
MBUF
5/26/96
OFFSET
RISE
IWF282
* In Canada, two (2) SK845 are allowed.
Chimney system requirements.
0 0 0 0 0 3" 11"
1 0 0 0 0 8Z\v" 20"
0 1 0 0 0 11Z\v" 25Z\v"
2 0 0 0 0 13Z\x" 29Z\v"
1 1 0 0 0 16Z\x" 34Z\v"
0 0 1 0 0 20Z\v" 40C\v"
2 1 0 0 0 21C\v" 43Z\x"
0 0 0 1 0 26Z\v" 51Z\v"
0 1 1 0 0 28Z\x" 55Z\v"
1 0 0 1 0 31Z\x" 60Z\v”
0 1 0 1 0 34Z\x" 65Z\x"
0 0 2 0 0 37Z\x" 70C\v"
1 1 0 1 1 41Z\x" 77C\v"
0 0 1 1 1 45" 83C\v"
0 1 2 0 1 47Z\v" 87Z\x"
0 0 0 2 1 51" 94"
0 1 1 1 1 53Z\v" 98"
0 0 3 0 1 56Z\v" 103Z\v"
0 1 0 2 1 59Z\v" 108Z\x"
0 0 2 1 1 62Z\v" 113Z\x"
0 1 3 0 1 64Z\x" 117Z\x"
0 0 1 2 1 68Z\v" 124"
0 1 2 1 1 70Z\x" 128"
0 0 0 3 1 74Z\v" 134Z\x"
0 1 1 2 2 78" 140C\v"
0 0 3 1 2 81" 146"
0 1 0 3 2 84" 151Z\v"
0 0 2 2 2 87" 156Z\x"
0 1 3 1 2 89Z\v" 160Z\v"
0 0 1 3 2 93" 166C\v"
0 1 2 2 2 95Z\v" 170C\v"
0 0 0 4 2 99Z\v" 177C\v"
0 1 1 3 2 101Z\v" 181C\v"
0 0 3 2 2 104Z\v" 186Z\v"
0 1 0 4 2 107Z\v" 191Z\x"
0 0 2 3 2 110Z\v" 196C\v"
0 1 3 2 3 114" 203Z\v"
0 0 1 4 3 117C\v" 209C\v"
0 1 2 3 3 120" 213Z\x"
0 0 0 5 3 123C\v" 220"
The chimney cannot be more than 30°
(45° in Canada) from the vertical plane in
any installation*.
The maximum length of the angled run
of the chimney system is 20 feet. (G
plus H cannot exceed 20 feet.)
A chimney support (Model SKCS8,
TCS8A - 8 inch triple wall) is required every
6 feet of angled run of chimney. Chimney
supports are required for every 30 feet
and 60 feet (SK8 pipe) or 20 feet and 40
feet (3-wall pipe) of vertical chimney height
above the hearth.
Determine the offset distance of your
chimney arrangement from the centerline
of the replace to the centerline of the
chimney where it is to pass through the
rst ceiling.
This offset distance may not be
your full offset distance. See Examples
2 and 3.
G + H cannot exceed 20 feet.
Air Space Clearances: SK8 (2-wall) = 1Z\x" and "S" Series (3-wall) = 2"
6
WMC Series Woodburning Fireplace
20000583
Preplanning an installation is very important to ensure
safety and to save time and money. An installer must
predetermine where a replace will be set and how the
chimney system will be run.
A replace may be mounted on the following surfaces:
1. A at 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 replace.
The replace be spaced 1/2" (13 mm) from a com-
bustible back wall and 1/2" (13 mm) from a combustible
side wall or support. Refer to Page 14, Figure 18.
Determine how the chimney will be run, length of run and
chimney components required to complete the job. (Fig. 4)
install a chimney below minimum heights.
Major U.S. building codes specify a minimum chimney
height above the roof top. The “Ten Foot Rule” is a re
safety rule and not a draft rule. It is recommended that
you always meet or exceed the “Ten Foot Rule,” especially
when installing a termination on a high pitch roof. (Fig.
6)
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' (3 m) or less, the top of the chimney must
be at least 2' (609 mm) above the peak of the roof, but
never less than 3' (914 mm) 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 refer-
ence point is established that is on the surface of the roof
a distance of 10' (3 m) from the chimney in a horizontal
plane. The top of the chimney must be at least 2' (609
mm) above the reference point, but never less than 3'
(914 mm) in height above the highest point where it
passes through the roof.
In planning a chimney system, it is important to know:
1. The height of a chimney is measured from the hearth
to the exit point on the termination.
2. A chimney cannot be offset more than 30° from a vertical
plane.
3. A chimney may run straight up or it may be necessary
to offset it to avoid obstructions.
4. The maximum length of an angled run (total chimney
system) is 20' (6 m).
5. No more than 2 offsets (4 total 30° elbows in U.S./or
2 total 45° elbows in Canada) per replace may be
used.
6. A guy wire stabilizer (not provided) is required for
chimneys extending more than 6' (1.8 m) above a roof
line.
L1
L1
LTMODEL SK
2 WALL
CHIMNEY
TOTAL
LENGTH
(LT)
INSTALLED
LENGTH
(L1)
SK81
SK818
SK83
SK84
56O"
56O"
56O"
56O"
56O"
56O"
56O"
56O"
FP288A
MBUF-INSTALLED LENGTH
Triple wall
1/28/99 djt
TRIPLE
WALL
81
818
83
84
FP288A
Installed lengths of chimney sections.
2' Min.
2' Min.
3'
Min.
0 To 10'
3'
Min.
0 To 10'
AC246
4/1/96
Reference
Point
AC246
Ten Foot Rule illustration.
7
WMC Series Woodburning Fireplace
20000583
The chimney system is supported by the replace for
vertical chimney heights less than 30' (9 m) above the
hearth. Chimney supports are required if the vertical
height exceeds 30' (9 m) with SK8 chimneys or 20' (6 m)
with 3-wall chimneys. Locate chimney supports at ceil-
ing holes or other structural framing at 30' (9 m) (SK8)
or 20' (6 m) (3-wall) heights. Spacing between chimney
supports exceed 30' (9 m) (SK8) or 20' (6 m)
(3-wall). Use Chimney Support Model SKCS8 (SK8) and
TCS8A (3-wall).
Support provided
by elbow straps fullls the support requirement only if they
are spaced as previously described. (A chimney support
is 2Z\x" long when installed.)
Angled chimney runs require a support every 6' (1.8 m) in
addition to the elbow straps. Chimney supports are used
for this function. (Fig. 7)
A chase is a vertical boxlike structure which encloses the
replace and/or chimney. Chases are typically built on the
outside of the house with replace opening cut into the
outer wall of a room. (Page 5, Fig. 3)
If you need help in determining replace location or how
the chimney system should be run, contact your Vermont
Castings Group dealer for assistance.
If you live in a cold climate, it is not required but
that you insulate replace enclosure to
eliminate cold air penetration as much as possible.
Insulate base of replace with a noncombustible insula-
tion rated for a minimum of 300°F. Insulating is
for outside wall installations over a concrete
slab. If replace is installed on a platform, insulation
should be placed on top of the platform replace
is set. (Fig. 8)
When a replace 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 restop at the rst ceiling level
above the replace and enclose the chase with sheeting
material. Insulation may then be installed above sheet-
ing material to assure the space around the replace is
totally protected. (Fig. 3)
When installing the chimney, caulk between
outer pipe and restop. It is vital that some air be allowed
to ow through this very thin gap.
WHEN INSTALLING A FIREPLACE IN AN
INSULATED ENCLOSURE, BE SURE ALL REQUIRED
AIR SPACES ARE MAINTAINED. (Page 13, Fig. 18)
FP284
Chimney support installation.
FP284
MBUF CHIMNEY SUPPORT
1/28/99 djt
Chimney Sup-
port Strap
Chimney
Support
FPC555
Platform insulation
circulating model
1/28/99 djt
FPC555
Insulating between platform and replace.
Cover Plate
Top Shield
Hard, Flat
Surface
Insulation
Platform
8
WMC Series Woodburning Fireplace
20000583
Framing can be constructed before or after the replace
is set in place, however, most installers build the frame
before setting the replace.
Frame replace with 2 x 4 lumber or heavier materials.
Refer to framing dimensions in Figures 1 and 2 for basic
replace specications.
Framing should be positioned to accommodate
wall covering and replace facing material.
To prevent electrical shock, the house power
must be disabled. This can be accomplished by positioning
the circuit breaker to off.
The fan kit assembly and model EB1 junction box are
factory installed.
Check local building codes to determine if a junc-
tion box is required at the romex pigtail/house wire con-
nection.
The SCVS Variable Speed Control is tested and safe when
installed in accordance with these instructions. Read all
instructions before beginning installation. Follow instruc-
tions carefully.
The SCVS speed control may be used as an alternate
wall switch in lieu of the single pole (Listed 1.5 Amp 120V)
switch described in the fan or replace installation instruc-
tions.
For mounting the speed control, a 2" deep standard electri-
cal box should be used. Using wire nuts supplied with the
speed control, connect control in series with fan motors and
line voltage. Refer to Figure 9 for wiring diagram.
Mount speed control in electrical box and attach wall plate
with screws provided. Push on knob so that indicator is in
OFF position. (Fig. 10)
Turn control knob counterclockwise until a click is heard
for OFF position. To operate fans, turn knob clockwise and
adjust fan speed as desired.
Green
White
Black
White
FP1212
SCVS wiring
5/23/02 djt
Ground
Ground Screw
Variable Speed Con-
trol (optional)
Wire Nuts
(supplied)
Receptacle
Fireplace
Junction Box
Ground
Stud
Wall
Junction Box
(not supplied)
Black
FP1212
SCVS wiring diagram.
OFF
LOW
FP1213
SCVS
components
5/24/02 djt
Electrical Box
(not supplied)
Speed Con-
trol Cover
Plate
Oval
Head
Screw
Plastic
Knob
Flat
Head
Screw
Wire Nut FP1213
Speed control mounting.
9
WMC Series Woodburning Fireplace
20000583
Since you have already preplanned the chimney run, you
should know exactly how the installation is to be accom-
plished - how much pipe is required, the number of elbows,
if any, and type of termination to be used.
REPORT TO YOUR DEALER ANY PARTS
DAMAGED IN SHIPMENT, SPECIFICALLY CHECK THE
END CONNECTION OF CHIMNEY SECTIONS AND
ELBOWS.
The WMC36 may use Vermont Castings Group
model SK8, or Model S (three wall) chimney systems.
However, a TWABR adapter collar is required when using
the Model S (triple wall) chimney system on this unit. The
WMC42 is designed to use only the "S" triple wall chimney
system. Either chimney system may be used, but
be mixed.
To use the TWABR adapter on the WMC36, remove
and discard the cover plate on the top shield. (Fig. 8)
To mark the centerline of the ue, put the replace in nal
position and measure out from the wall: 9Z\v" (235 mm).
Mark a spot on the ceiling directly above the replace.
Draw a line parallel to the back wall through this mark.
(Fig. 11)
Using a plumb bob positioned directly over center point
of replace ue collar, mark the ceiling to establish the
chimney center point. (Fig. 11)
In order to clear an obstruction, it may be necessary to
offset chimney from vertical. This is accomplished by us-
ing Vermont Castings Group 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 equipped with support straps. It is very important to
install the second elbow in each offset as close to the
ceiling or support as possible so the elbow straps can be
secured to framing members to help support the weight
of the chimney.
Determine offset distance of your chimney arrangement
from centerline of replace 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.
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 oor above and see where hole will be cut.
Check to see where existing ceiling joists and other pos-
sible obstructions are located...i.e. wiring, plumbing etc...
If necessary, reposition chimney and/or replace to avoid
obstructions.
Cover replace collar opening and cut proper sized chim-
ney hole in chimney. The SK8 pipe allows you to run pipe
through a typical 16” on center joist without cutting joists.
FPC556
WMC
LOCATE CENTER LINE
Circulating model
1/28/99 djt
9Z\v"
(235mm)
FPC556
Locate centerline of chimney with plumb line.
Chimney Centerline
Actual Centerpoint
Plumb Line
Plumb Bob
Imaginary Cen-
terpoint
10
WMC Series Woodburning Fireplace
20000583
Frame the ceiling chimney hole as shown in Figure 13. It is
good practice to use framing lumber that is the same size
as the ceiling joists; this is a requirement at attic level.
The following table gives restop spacer model num-
bers:
If replace is to be elevated above the oor, a “Z” shaped
metal safety strip must be fabricated and used to protect
combustible surfaces in front of the replace. This “Z”
shaped safety strip is not provided but must be fabricated
of metal with each horizontal leg at least 1Z\x" (38 mm)
wide and equal in length to the metal strips provided with
the replace.
Safety strips are not required over noncombustible
oors where all supports at the base of the replace are
noncombustible.
Nailing anges are integrated on the face of the replace.
To level the box and secure it rmly in place, bend the nail-
ing anges and install as shown in Figure 15.
Typical frame for ceiling chimney hole.
FP551
WF551
BR/BC
9/29/97
See
Fig. 12
See
Fig. 12
Existing
Ceiling
Joists
Ceiling
New Framing
Members
Chimney
Hole
Ceiling chimney hole sizes necessary for installing
restop spacer.
8" Flue SKFS2A SKFS6A
"SK" Series 14Z\x" x 14Z\x" 14Z\x" x 25Z\x"
(368mm x 368mm) (368mm x 648mm)
8" Flue FS2A FS6A
"S" Series 3-Wall 17Z\x" x 17Z\x" 17⁷\," x 29B\,"
(445mm x 445mm) (454mm x 753mm)
The inside dimension of the frame must be the same as
the hole size selected from Figure 13 in order to provide
required air space between the outside diameter of the
chimney and the edges of the framed ceiling hole. (1Z\x"
- SK8; 2" - 3 wall)
Slide replace into position.
Lift the replace front slightly and slide the metal safety
strips under front bottom edge about 1Z\x" (38 mm), allowing
the remainder to extend in front of rebox. Overlap strips
at least 1/2" (13 mm) to provide a positive joint. (Flat safety
strips are packed with replace.) (Fig. 14)
Safety strips are used to ensure that any combustible ma-
terials in front of the replace are protected even though
a noncombustible hearth extension is required.
FPC557
Safety strip installation.
FPC557
WMC Safety strip installation
circulatin models
1/29/99 djt
Metal Safety
Strips
(1, 2 or 3 Pieces)
Z\x" (13mm)
Min. Overlap
1Z\x"
(38mm)
"Z"
Safety
Strip
Fire-
Place
Plat-
Form Hearth Ext.
(not supplied)
FPC549
Fasten replace in position.
FPC549
Nail flange/standoff
circulating models
1/29/99 djt
Nail Top
Standoffs
Nail Side-
Nailing
Flanges
11
WMC Series Woodburning Fireplace
20000583
An outside air kit is installed in all WMC Series Fireplaces. If
desired, or if local codes mandate the use of an air kit, then
an AK-MST is required to complete the installation (from
air kit to the outdoors). If the outside air kit is to be used,
the AK-MST be installed the replace is
enclosed. Refer to the AK-MST instructions for eld instal-
lation. The outside air control lever is located at the front
edge of the left side brick. To ‘open’, push the control lever
down toward the hearth brick. To ‘close’, pull the control
lever up and over. (Fig. 16)
For Canada installations, model CCE-SK Chimney
Collar Enclosure must be used on this replace with Model
SK8 double wall chimney systems.
FPC558
Install pipe, listening for the snap-lock to fasten.
UP
FPC558
WMC
Pipe install
Circulating models
1/29/99 djt
Inner Pipe Section
Pipe
Rim
Pipe
Rim
Hem
Lance
FP270/271
CR Series
2/19/99 djt
Attach straps to a structural framing member.
FP270/271
Support Structure
Elbow Strap
(Must be tight)
Ceiling
Hole
Framing
Angle Firestop
Chimney Support Strap
(Must be tight)
CLOSED
OPEN
WF 710
OUTSIDE AIR LEVER
WOOD FIREPLACES
5/28/98
FP710
Outside air operation.
Start by attaching the rst chimney section to the collar on
top of the replace.
Install the pipe as pictured in Figure 17. When you get
a good lock, you will hear the pipe clearly snap together.
Once sections are snap-locked in place, it is extremely
difcult to get them apart.
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 mem-
ber. (Fig. 18)
Continue installing the pipe as required until pipe is installed
up through the ceiling. At this point, you must install a
restop spacer.
A restop spacer is used to keep pipe spaced properly and
required for safety.
Nail the restop spacer (at each corner) to the framing
members of the ceiling hole. A restop spacer is
not required at the roof.
Hole sizes listed in Figure 13 for angled restop 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 ooring
material exceeds 8" (203 mm), adjustments must be made
in framing to assure that minimum air spaces to chimney
are maintained.
Figure 19 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 ceilingan attic, position the
restop spacer with the ange on the ceiling side and the
angled portion extending up into the hole.
12
WMC Series Woodburning Fireplace
20000583
FP593
SR/C
11/20/97
Installing restop spacer.
FP593
Nails (4)
Firestop Spacer
Joist
Joist
Firestop Spacer
Nails (4)
FP263
Attic shield installlation (Canadian requirement).
IGF263
MBUF
5/9/96
Attic Insula-
tion Shield
Ceiling
Base
Flanges
Nails
(4 required)
Attic Joist
If the area above the ceiling an attic, position the restop
spacer with the ange on the top of the framed hole and
the angled portion extending down into the hole.
Firestop spacers are not available for nor are they required
on vertical walls.
put any sealant around the area where the outer
pipe slides through the restop spacer. If you seal this
area,
In Canada, an attic insulation shield is required to prevent
attic insulation from contacting the chimney section.
If the attic insulation shield is used, the restop is not re-
quired in the attic installation. Framing dimensions for the
chimney hole should measure 14Z\x" x 14Z\x" (368 x 368
mm) for SK8; 17Z\x" x 17Z\x" (445 x 445 mm) for 3-wall. An
attic shield MUST be installed on top of attic joists (above
the oor level). (Fig. 20)
In the U.S., it is a good idea, although not always
required, to install an attic insulation shield where blown-in
insulation is planned to be used in the attic.
Install the attic insulation shield with the anges on its base
extending down into the framing hole. Nail each corner of
attic insulation shield to the framing members of the ceil-
ing hole using 8d nails. Attic shields are not required at
the roof.
Continue attaching pipe sections to complete system
to next level always being careful that the pipe is rmly
snapped locked in place before proceeding to next pipe
section.
If chimney supports are required, they are installed the
same as elbows. Nail chimney support straps to adjacent
structural framing, as shown on Page 7, Figure 7. Bend
straps as necessary and make sure they are secure so
they will support the weight of the chimney. A chimney sup-
port is 2Z\x" long when installed. Consider this dimension
when determining how many straight chimney sections
are needed.
Chimney supports are generally used in long runs
in a chase installation.
If you encounter additional ceilings, repeat same steps
required for rst ceiling installation. Refer to restop il-
lustration on Figure 19.
Run pipe to roof line. Since chimney system must be
vented to the out-of-doors, you use an approved
termination.
If a chase is used, refer to the installation manual provided
with the termination cap.
Use same procedure detailed in locating center point of
the ue system.
Drive a nail up through roof at the center point. This will
determine center point on outside of the roof.
If the attic insulation shield is used, the restop is not
required in the attic installation.
13
WMC Series Woodburning Fireplace
20000583
Size of roof hole varies with the type of chimney termination
installed. Refer to installation instructions provided with the
chimney termination to nd correct size of roof hole.
There must be an air space (1Z\x" - SK8; 2" - 3-wall) between
outermost portion of chimney sections and any adjacent
combustible surfaces. (Combustible surfaces include burn-
able materials such as: ceiling members, joists, ooring,
combustible insulation and roof structures.)
Mark an outline of the roof hole around the center of the
point nail. Hole dimensions given in the chimney
top installation instructions are dimensions;
therefore, the hole size must be marked on the roof ac-
cordingly.
Cover the opening of the installed chimney so debris can-
not 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 ashing anchored
to the frame must be able to withstand heavy winds.
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.
Follow the installation instructions provided with the chim-
ney termination you have selected.
Refer to Page 4, Figure 3 for an illustration of a typical
chase installation.
All joints between the nished wall and the
replace surround (top/sides) must be sealed with noncom-
bustible material to prevent cold air leakage into the room.
Only noncombustible material may be applied to the facing
of the replace surround. (Black painted area) (Fig. 21)
Finish the wall with material of your choice.
(Fig. 23)If a combustible material is used below a at
mantel shelf, consult your local building codes for mini-
Only noncombustible
material may be applied
as facing to the black
fireplace surround.
Wall
Shield
Hearth
Extension
0" Clearance
to Floor
Firestop
Z\x" Air
Space
to Back
Z\x" Air
Space
to Sides
FPC559
WMC
AIR SPACES
circulating models
1/29/99 djt
Front View Side View
Standoff
Combustible framing material MUST NOT
penetrate AIR SPACE (shaded areas).
Air Space Clearances
Z\x" Air Space
To Sides
1Z\x" (SK8)
2" (3-wall)
Minimum clearances to combustibles.
FPC559
14
WMC Series Woodburning Fireplace
20000583
mum clearance from top of replace opening to bottom of
mantel shelf.
All joints (top, bottom and sides) where wall or decorative
facing material meets replace surround must be com-
pletely sealed with a noncombustible material. (Figs. 22
and 23)
No side wall protection is required for replaces
installed at 45° to two (2) side walls (corner installation).
Often a decorative surround or vertical portion of the mantel
is desired. If this is constructed of any combustible material
it must be within the safe zone indicated in Figure 23.
Adjacent combustible side walls that are within the mini-
mum dimensions shown in Figure 24 of replace opening
must be protected with a specically built wall shield as
described below.
The special wall shield design described in Figure 19 is
an alternate method of adding protection to side walls. Rt
must =1.85 minimum.
FP531b
Mantel clearance.
FP531b
mantel clearances
9/03 djt
Z\x"
12"
(305mm)
Max.
12" (305mm)
Min.
1Z\x"
(38mm)
6"
(159mm)
Min.
Combustible
Mantel and
Trim Finished Wall
Header
Standoff
Noncombustible
Material
Grille
Opening
Fireplace Open-
ing
2 x 4 Stud
Finished Wall
Must be sealed with non-
combustible material
Fireplace Front
MA81
Combustible mantel clearances.
MA81
rev. 8/5/97
1Z\x"
Ref.
Combustible materials are
permitted within a shaded area
shown in Figure 23 titled
Minimum Wall Clearances.
*
**
Face Plate
15
WMC Series Woodburning Fireplace
20000583
1. Manville - CERAFORM 126, K=.27,
1/2 inches thick
2. Vermont Castings Group - EH2416, K = .458,
1 inch thick required.
(Micor 300)
A hearth extension is required to protect a combustible oor
in front of the replace. Refer to Figure 24 for minimum
dimensions and mounting detail.
The hearth extension described in Figure 24 must be a
durable noncombustible material with a minimum (total)
Rt value of 1.09; refer to Figure 25 for examples. The
overall height (above a combustible oor), depth and width
must be as indicated, with the extension centered to the
replace opening.
The top of insulation must be covered with a noncombus-
tible decorative covering a piece of .018” minimum sheet
metal, to protect hearth extension material. (Fig. 24)
Secure the hearth extension to the oor to prevent shift-
ing, using trim molding or other similar means at three (3)
outer edges. Seal crack between the replace hearth and
hearth extension with a noncombustible material. (Figs.
22 and 26)
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.
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 sufciently greater
to maintain an equivalent (total) thermal resistance (Rt).
Minimum Wall Clearances
WITH
Noncombustible
Surround Facing
WITHOUT
Noncombustible
Surround Facing
Minimum Hearth Extension Dimensions
(for On-Site Construction)
G
HG
J
Seal cracks
between the
fireplace
and hearth
extension with
noncombustible
material
Safety strips
must overlap
56O" minimum
May install
noncombustible
decorative
covering
OR .018" min.
sheet metal FIREPLACE
HEARTH
Combustible
Floor
1/2” Min.
EH2416 or
Equal “R”
Value
4" MIN.
FP594A
WMC combustible min.
1/29/99 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" Vermont Castings
Group 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.
4"
Shaded area starts
1/2" away from
edge of unit
FP594A
Combustible side wall protection and hearth extension dimensions.
WMC36 16" 12" 48° 41° 18" 14" 7C\v" 16" 48"
406 mm 305 mm 457 mm 356 mm 197 mm 406 mm 1219 mm
WMC42 20" 12" 42° 35° 18" 14" 11Z\x" 20" 61Z\x"
508 mm 305 mm 457 mm 356 mm 292 mm 508 mm 1562 mm
16
WMC Series Woodburning Fireplace
20000583
COMMON MATERIALS AND FACTORS
MATERIAL K* R MINIMUM
THICKNESS
EH2416
Micor 300
Common Brick
0.458
5.0
1.09 0.50 in.**
0.10 5.46 in.**
R Value is for 1/2 inch.
* Units of K = BTU/SQ FT/HR/˚F/IN
** Thickness of Listed Material
FP533ADD
Addendum
6/1/99 djt
8/4/99 changed .2 to .1
one inch to 1/2 inch djt
Hearth extension material factors.
FP533ADD
NEW K of new material (per inch) thickness
required = ------------------------------------ X of listed
thickness K of listed material (per inch) material
To determine the thickness required for any mate-
rial:
T (new) = 5.0 / 0.458 x 0.50 in. = (new required
thickness).
FP550
BR/BC - SEALING
DETAILS
9/29/97
Wall Covering
Noncombustible
Decorative
Facing
Noncombustible
Decorative
Covering
Seal all cracks
between fireplace
surround and wall
materials with
noncombustible
material.
Seal crack
between fireplace
and hearth extension
with noncombustible
material.
2x4" Header -
Do not notch at
standoffs.
Safety Strips -
Must be overlapped
Z\x" minimum.
Hearth Extension
Insulation
Side View
FP550
Sealing gaps.
Your replace can provide countless hours of pleasure and
security. However, use your replace carefully because
any time you build a re inside a house, a problem may
develop.
The ue damper is meant to be closed only when the re
is completely out and the replace is not in use. This pre-
vents the loss of room air up the open ue. Remember, the
damper must be in the “open” position when refueling.
The WMC Series fireplace flue damper is
“opened” and “closed” by a knob located just below the
top outlet grille. (Fig. 27) The damper is adjustable and
may be adjusted to the partially open notch as long as the
glass doors are closed and smoke buildup does not occur
in the rebox. Most efcient operation is obtained in the
partially open position. When refueling, fully open damper
before opening glass doors.
WMC Series damper control positions.
MD706-1
MD-100
WM Series Damper Control
3/5/99
OPEN DAMPER BEFORE CLOSING DOORS
CLOSED
PARTIALLY
OPEN
FULLY
OPEN
17
WMC Series Woodburning Fireplace
20000583
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.
If installing an unvented gas log set, refer to statement below:
Vermont Castings Group replaces are designed to accept
a 1/2" 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 replaces.)
Be sure to have the appliance installed in accordance with
building codes.
Gas connection may enter from either left or right side of
the replace.
Locate appropriate gas line access hole in the outer cas-
ing of replace and remove insulation from gas line tube.
(Fig. 28)
From inside the replace, locate the knockout on the re-
brick -- be sure you are on the appropriate or "gas line" side
of the replace. Using a at bladed screwdriver or small
chisel and hammer, carefully tap around the knockout until
it loosens and falls out.
Install 1/2" certied gas pipe through opening. After gas
pipe installation is complete, use insulation that was re-
moved from gas line tube to repack space around the pipe.
Material should be inserted from outside of the replace and
packed tightly to totally seal between the pipe and tube.
When installing an ANSI Z21.11.2 ventless appli-
ance, the nishing materials used for the mantel must be
rated at 250°F or greater.
BTU input of a gas appliance installed in replace should
be rated less than 100,000 BTU/Hr.
Gas pipe installation is intended for connection to a deco-
rative gas appliance only when (1.) incorporating an auto-
matic shut-off device and (2.) complying with the Standard
for Decorative Gas Appliances for Installation in Vented
Fireplaces (ANSI Z21.60) 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).
FPC560
Gas line access.
1"
Min.
FPC560
WMC
Gas line access
1/29/99
1/2"
Hole in Outer Casing
Gas Line
Tube
Ceramic
Knockout
Supply
Line
Repack Insula-
tion
Hole in Outer
Casing
Ceramic Knockout
(Both sides)
18
WMC Series Woodburning Fireplace
20000583
2-583
Parts page
3/2/99 djt
1
2
3
4
5
6
12
8
10
9
11
15 14a,b
17
16
18
OFF
LOW
13
7
2
Vermont Castings Group reserves the right to make changes in design, materials, specicaitons, prices and discontinue colors and products at any
time, without notice.
1. Damper Blade 7551310 7551310
2. Grille Painted (two per replace) 20014533 20000714
3. Basket Grate 3041130 3041130
4. Screen (two per replace) 26D0131 26D0131
5. Damper Knob (Wood) 7536177 7536177
6. Firebrick - Left Side 3041104 3034102
7. Firebrick - Back 3030102 3034104
8. Firebrick - Right Side 3041105 3034103
9. Firebrick - Hearth 3041103 3034105
10. Screen Rod (two per replace) 26D0138 61D0500
11. Top Brick Retainers (three per replace) 3030172 3030172
12. Cable Clips (four per replace) 7512135 7512135
13. O.S.A. Assy. 20003076 20003076
14a. Door Assy. - Brass Doors 20002984 20002985
14b. Door Assy. - Black Doors 20005309 20005310
15. Door Track Assy. 20003384 20003435
16. Closure Spring 7540264 7540264
17. Blower Assembly 20000620 20000620
18. Variable Speed Control 2544900 2544900
19
WMC Series Woodburning Fireplace
20000583
The following accessories for this appliance are available from your local distributor. Should you need additional in-
formation beyond what your distributor can furnish, contact: Vermont Castings Group, 149 Cleveland Drive, Paris, KY
40361; Attn: Technical Services.
Glass Door — Optional Bi-Fold door set - Pewter nish 42GDKS (WMC42)
Outside Air Termination Completes connection from air kit to out-of-doors AK-MST
Chimney Adapter Converts WMC36 to use 3-wall system TWABR
Hearth Extension Insulation Provides hearth extension oor protection EH2416
20
WMC Series Woodburning Fireplace
20000583
Round Top Termination Top used to terminate chimney at roof. RLTSK8
(SK8) (Flashing not included.)
Round Top Termination - Top used to terminate chimney at chase. RLTSK8L
Extended (SK8) (Flashing not included.)
Flashing Metal nishing required around Contemporary 8-6-12 with 8" ue:
Termination to prevent rain leakage. 0-6/12 pitch
8-12-12 with 8" ue:
6/12-12/12 pitch
Square Top Housing Top housing of simulated brick pattern S20BR(Red)
available in red, tan or white. Appropriate S20BT(Tan)
adapter required. Flashing included. S20BW(White)
Housing Extensions Extends Square Top Housing on steep pitched 202036
roofs. (Specify red, tan or white)
Square Shroud Square knockdown shroud for RLTSK8L SKDSBL
(SK8) chase applications. (Black)
Square Chase Termination Housing used to terminate chimney through CT100
a chase top. (Unpainted nish)Appropriate
adapter (CTSK) required.(Flashing not included.)
Pyramid Shroud Pyramid knock-down shroud for RLTSK8L PKDSBL
chase application. (Black)
Chase Top Housing Low prole pyramid-style chimney cap used to PLTSK8
(SK8) terminate chimney through a chase. Includes
adapter. (Flashing not included.)
Chase Top Housing Square chimney cap used to terminate chimney SLTSK8
(SK8) through a chase. Includes adapter.
(Flashing not included.)
SK8 Chimney Sections Pipe used to build 8" (SK8) ue systems. SK81 (1' Long)
SK818 (1Z\x' Long)
SK83 (3' Long)
SK84 (4' Long)
SK8 Chimney Elbows Elbow used to create an offset in an 8" SK830-2
chimney system. Only 30˚ elbows available.
Packaged 2 per carton (offset and return).
Firestop Required at each oor level of chimney SKFS2A —
(SK8) installation. (Plus attic on multi-story installation.) (8" straight ue)
SKFS6A —
(8" 30° inclined ue)
Chimney Support Used to support chimney for each of: 30' vertical SKCS8
(SK8) height and 6' of angled chimney run.
Chimney Sections Pipe used build 8" (3-wall) ue systems. 81 (1' Long)
(3-wall) 818 (1Z\x' Long)
83 (3' Long)
84 (4' Long)
Chimney Elbows Used to create an offset in an 8" chimney system. 830A-2
(3-wall) Only 30° elbows available.
Packaged 2 per carton (offset and return).
Round Top Termination Top used to terminate chimney at roof. RLTS8
(3-wall) (Flashing not included)
Round Top Termination Top used to terminate chimney at chase. RLTS8L
Extended (3-wall) Adapter kit included. (Flashing not included)
This manual suits for next models
1
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