Majestic STR42, STR33, CVR36, STR36, CVR42 User Manual
STR/CVR Series
Woodburning Fireplace
Homeowner's Installation
and Operating Manual
For Models:
STR33
STR36
For use in U.S./Canada
Underwriter's Laboratories
Report No. MH6018
STR42
CVR36
CVR42
DO NOT DISCARD THIS MANUAL: Retain for future use.
7412961 12/06 Rev. 17
STR/CVR Series Woodburning Fireplaces
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.
Description
The STR/CVR Series fireplaces are multi-side solid fuel,
woodburning fireplaces. These are radiant models only
and include a preinstalled outside air kit.
Precautions
Majestic Fireplaces 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 before
beginning installation.
If you notice any damage to fireplace or component parts,
immediately report damage to your Majestic Fireplaces
dealer.
Only use CFM Corporation components or the warranty
will be voided and a fire hazard may be created.
CFM Corporation warranty will be voided by and CFM
Corporation disclaims any responsibility for the following
actions:
• Installation of any damaged fireplace or chim-
ney component;
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, wood-
burning 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.D
Drafts
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.
Gas Logs
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.
• Modification of fireplace, chimney assembly or
any component parts thereof; (except for chase
flashings as detailed in the Chimney Top installation instructions).
• Installation other than as instructed by CFM
Corporation; or
• Installation and/or use of any component part
not manufactured or approved by CFM Corporation in combination or assembly with a Majestic Fireplaces 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.
Fireplaces 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.
Units: EC20R0, FC20R0, GC20R0, FD20R0, GD20R0
Safety Information . . . . . . . . . . . . . . . . . . 2
Specifications and Framing
Parts Identification
Chimney Requirements . . . . . . . . . . . . . 6
Planning Information . . . . . . . . . . . . . . . . 7
Installation . . . . . . . . . . . . . . . . . . . . . . . 8
Replacement Parts . . . . . . . . . . . . . . . . 20
Accessories . . . . . . . . . . . . . . . . . . . . . 22
STR33 / STR36 / STR42
CVR36 / CVR42
Listed
UL 127 / ULC-S610
Standard for Factory Built Fireplaces
Table of Contents
. . . . . . . . . . 3
. . . . . . . . . . . . . . . . . 4
2
7412961
STR/CVR Series Woodburning Fireplaces
12"
9"
A
D
E
36"
21"
37"
7"
7"
Gas Line Access
Outside
Air
14"
12"
C
12"
G
F
B
J
24" Total
Unit Width
Framing Width
Will be 24" Minus
2 x (Drywall Thickness)
18"
STR33 STR36 STR42
A 33" 36" 42"
838mm 914mm 1067mm
B 37" 40" 46"
940mm 1016mm 1168mm
C 18" 20" 23"
470mm 508mm 584mm
D 49" 49" 53"
1267mm 1267mm 1368mm
E 52" 52" 56"
1340mm 1340mm 1442mm
F 11" 11" 13"
279mm 279mm 343mm
G 8" 8" 11"
203mm 203mm 279mm
J 26" 29 " 35"
680mm 741mm 894mm
"
"
B
A
D
E
36"
"
37"
"
"
Gas Line
Access
" Total
Unit Width
"
G
F
C
Outside
Air
"
"
J
Framing Width
Will be 24"
2 x (Drywall Thickness)
18"
CVR36 CVR42
A 36" 42"
914 mm 1067 mm
B 40" 46"
1016 mm 1168 mm
C 20" 23"
508 mm 584 mm
D 49" 53"
1267 mm 1368 mm
E 52" 56"
1340 mm 1442 mm
F 11" 13"
280 mm 340 mm
G 8" 11"
203 mm 280 mm
J 29" 35"
741 mm 895 mm
STR Series Woodburning Fireplace
Fig. 1 STR Series specifications and framing.
Fig. 2 CVR Series specifications and framing.
7412961
CVR Series Woodburning Fireplace
3
STR/CVR Series Woodburning Fireplaces
STR Fireplace
CVR Fireplace
Gas Line
Access
Outer
Dome
Outside Air Access
Ledge
Brackets
Header
Standoffs
Flue Damper
Control
(Inside)
Flue
Damper
Flue
Collar
Outer Collar
Screen
Gas Line
Knock-out
(Both Sides)
Brick liner on
Sides and Hearth
Air Inlet
Hearth
Wood Grate
Firebox
Metal Safety Strips,
shown not in place
(1, 2, or 3 Pieces)
Outside Air
Control
Outer
Dome
A
B
STR/CVR Series Woodburning Fireplace
Fig. 3 STR/CVR Parts Identification.
Front/Back Width Side Width
A B
STR33 26" 17¹⁄₈"
(660 mm) (435 mm)
STR/CVR36 29" 17¹⁄₈"
(737 mm) (435 mm)
STR/CVR42 35" 17
(889 mm) (435 mm)
Fig. 3a Hearth dimensions.
FP1545
¹⁄₈"
FP701
4
7412961
Chase Installation
Insulation methods shown are optional
for cold climate, not a requirement for
unit operation.
Batt Insulation
(cut out around
firestop)
STR/CVR Series Woodburning Fireplaces
Termination Cap
Storm Collar
Pan Flashing
Firestop
Ceiling Level
Outer Dome
Refer to Figures 21
and 26 for clearance
information.
Ledge Brackets
Nailing Flange
Gas Access
(both sides)
Outside Air Cover Plate
Draftstop
Finish Wall
Surround
Screen
Grate
Firebox
Fig. 4 Fireplace and chase parts identification.
7412961
Outside Air
Control
FP704
5
STR/CVR Series Woodburning Fireplaces
OFFSET
RISE
D
RISE
B
G
H
B
OFFSET
C
E
6 FT.
G
H
A
HEARTH
FLOOR
CHIMNEY
SECTION
CHIMNEY FLUE EXIT
ELBOW
30˚
OFFSET
ELBOW
30˚
OFFSET
ELBOW
30˚
RETURN
ELBOW
30˚
RETURN
ELBOW
SKCS8
SUPPORT
Example 1 Example 2 Example 3
Chimney Requirements - Offset Installations
FP282
30˚ Elbow Offsets
Notes: G + H cannot exceed 20 feet.
Air Space Clearances:
SK8 (2-wall) = 1¹⁄₂" , and 11CF (2-wall) = 2"
Illustration Key
The following safety rules apply to
offset installations (letters correspond
with illustration above):
A. Height of the chimney is measured
from the hearth to the chimney exit.
Maximum: 90'0"
Minimum:
Without Elbows 15'6"
With 2 Elbows* 17'6"
With 4 Elbows* 21' 0"
B. Do not use more than 4 elbows per
chimney.
Attach the straps of the return (top)
elbow to a structural framing member.
The offset (first) elbow of any pair does
not have straps.
* In Canada, two (2) SK845 are allowed.
Fig. 5 Chimney system requirements.
6
CVR / STR Series
C. The chimney cannot be more than 30˚
(45˚ in Canada) from the vertical plane in
any installation*.
D. The maximum length of the angled run
of the total chimney system is 20 feet. (G
plus H cannot exceed 20 feet.)
E. A chimney support (Models TCS8A or
11CS) is required every 6 feet of angled
run of chimney. Chimney supports are re
quired for every 30 feet and 60 feet (SK8
& CF11 pipe) 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.
FP720
1'
3' 4'
1¹⁄₂'
0 0 0 0 0 3" 11"
1 0 0 0 0 8
0 1 0 0 0 11
2 0 0 0 0 13
1 1 0 0 0 16
0 0 1 0 0 20
2 1 0 0 0 21
0 0 0 1 0 26
0 1 1 0 0 28
1 0 0 1 0 31
0 1 0 1 0 34
0 0 2 0 0 37
1 1 0 1 1 41
0 0 1 1 1 45" 83
0 1 2 0 1 47
0 0 0 2 1 51" 94"
0 1 1 1 1 53
0 0 3 0 1 56
0 1 0 2 1 59
0 0 2 1 1 62
0 1 3 0 1 64
0 0 1 2 1 68
0 1 2 1 1 70
0 0 0 3 1 74
0 1 1 2 2 78" 140
0 0 3 1 2 81" 146"
0 1 0 3 2 84" 151
0 0 2 2 2 87" 156
0 1 3 1 2 89
0 0 1 3 2 93" 166
0 1 2 2 2 95
0 0 0 4 2 99
0 1 1 3 2 101
0 0 3 2 2 104
0 1 0 4 2 107
0 0 2 3 2 110
0 1 3 2 3 114" 203
0 0 1 4 3 117
0 1 2 3 3 120" 213
0 0 0 5 3 123
Chimney
Offset
Support
¹⁄₄" 20"
¹⁄₄" 25¹⁄₄"
¹⁄₂" 29¹⁄₄"
¹⁄₂" 34¹⁄₄"
¹⁄₄" 40³⁄₄"
³⁄₄" 43¹⁄₂"
¹⁄₄" 51¹⁄₄"
¹⁄₂" 55¹⁄₄"
¹⁄₂" 60¹⁄₄”
¹⁄₂" 65¹⁄₂"
¹⁄₂" 70³⁄₄"
¹⁄₂" 77³⁄₄"
¹⁄₄" 87¹⁄₂"
¹⁄₄" 98"
¹⁄₄" 103¹⁄₄"
¹⁄₄" 108¹⁄₂"
¹⁄₄" 113¹⁄₂"
¹⁄₂" 117¹⁄₂"
¹⁄₄" 124"
¹⁄₂" 128"
¹⁄₄" 134¹⁄₂"
¹⁄₄" 160¹⁄₄"
¹⁄₄" 170³⁄₄"
¹⁄₄" 177³⁄₄"
¹⁄₄" 181³⁄₄"
¹⁄₄" 186¹⁄₄"
¹⁄₄" 191¹⁄₂"
¹⁄₄" 196³⁄₄"
³⁄₄" 209³⁄₄"
³⁄₄" 220"
Rise
³⁄₄"
³⁄₄"
¹⁄₄"
¹⁄₂"
³⁄₄"
¹⁄₄"
¹⁄₂"
7412961
STR/CVR Series Woodburning Fireplaces
L
1
L
1
L
T
MODEL SK &
MODEL 11 CF
2 WALL CHIMNEY
TOTAL
LENGTH
(L
T
)
INSTALLED
LENGTH
(L
1
)
SK81 / 11CF1
SK818 / 11CF18
SK83 / 11CF3
SK84 / 11CF4
"
"
"
"
"
"
"
"
2' Min.
2' Min.
3'
Min.
0 To 10'
3'
Min.
0 To 10'
Reference
Point
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.
NOTE: STR33/36 and CVR36 models use CFM Corporation SK8 (2-wall) chimney systems. STR/CVR42
Fireplaces use only model 11CF chimney system.
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 1/2" (13mm) from a combustible back wall and 1/2" (13mm) from a combustible
side wall or support. (Page 14, Fig. 20)
Planning the Chimney Run
Determine how the chimney will be run, length of run
and chimney components required to complete the
job. (Fig. 6) Never install a chimney below minimum
heights.
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. 7)
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' (3m), 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' (610mm) above the reference point, but
never less than 3' (914mm) in height above the highest point where it passes through the roof.
FP705
Fig. 6 Installed lengths of chimney sections.
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 neces
-
sary to offset it to avoid obstructions.
4. The maximum length of an angled run (total chimney
system) is 20' (6m).
5. No more than 2 offsets (4 total 30˚ elbows in U.S./or
2 total 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.
7412961
AC246
Fig. 7 Ten Foot Rule illustration.
-
7
STR/CVR Series Woodburning Fireplaces
Chimney Supports
The chimney system is supported by the fireplace for
vertical chimney heights less than 20' (6m) above the
hearth. Chimney supports are required if the vertical
height exceeds 20' (6m). Locate chimney supports
at ceiling holes or other structural framing at 20' (6m)
heights. Spacing between chimney supports must not
exceed 20' (6m). Use Chimney Support Model SKCS8
for SK8 chimney, and Model 11CS for 11CF chimney.
(NOTE: the chimney support can not be mounted
directly to the fireplace.) Support provided by elbow
straps fulfills the support requirement only if they are
spaced as previously described. (A chimney support is
2¹⁄₂" (64mm) long when installed.)
Angled chimney runs require a support every 6' (1.8m)
in addition to the elbow straps. Chimney supports are
used for this function. (Fig. 9)
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 5, Fig. 4)
If you need help in determining fireplace location or how
the chimney system should be run, contact your Majestic 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 non-combustible
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. 9)
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. 4)
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
14, Fig. 20)
Chimney Support Strap
SKCS8
Fig. 8 Chimney support installation
8
FP284
7412961
STR/CVR Series Woodburning Fireplaces
Framing
Framing can be constructed before or after the fireplace
is set in place, however, most installers build the frame
before setting the fireplace.
Frame fireplace with 2 x 4 lumber or heavier materials. Refer to framing dimensions in Figures 1, 2, 3 or 4
for basic fireplace specifications. Headers and support
studs must be turned on end as illustrated on Page 5,
Figure 4.
NOTE: Framing should be positioned to accommodate
wall covering and fireplace facing material. Maintain
1/2" (13mm) air space between the outer dome and
any combustible framing materials that may be supported by the ledge brackets. Refer to Figures 20
and 26 for details.
Hard, Flat
Surface
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: STR33/36 and CVR36 models use CFM Corporation SK8 (2-wall) chimney systems. STR/CVR42
Fireplaces use only model 11CF chimney system.
Straight-Up Chimney Installation
To locate the centerline of the flue put the fireplace in
final position and place a plumb bob from the ceiling to
the center of the fireplace flue collar. Mark this spot on
the ceiling. Draw a line through that mark to either side
of the firebox and indicate dimension X to locate the
side wall framing. (Fig. 10) Be sure to observe clearance requirements for side and parallel combustible
walls as noted in Page 16, Figure 23.
Insulation
Plateform
Fig. 9 Insulating between platform and fireplace.
FP706
Offset Installation
In order to clear an obstruction, it may be necessary
to offset chimney from vertical. This is accomplished
by using CFM Corporation elbows. Use the 30° Offset
Elbow table on Page 6 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 that 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 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 the chimney center
point on the ceiling.
7412961
9
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