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17

SHR Series  Woodburning Fireplaces

20001384

Side Wall Protection

Adjacent combustible side walls that are within dimen-
sions shown in Figure 29 of fireplace opening must be
protected with Wall Shield Model SP40 or a specifically
built wall shield described in Figure 28.

The special wall shield design described in Figure 25 is
an alternate method of adding protection to side walls
and can be used in place of the SP40 with the same
wall clearances specified for the SP40. Rt must =1.85
minimum.

Examples of wall shield insulation:

1.  Manville - CERAFORM 126, K=.27,

1/2 inches thick

2.  CFM Corporation - EH2416, K = .458,

1 inch thick required.

40"
Min.

40" Min.

Decorative
Noncombustible
Rigid Covering

Noncombustible
Insulation
R

T

 = 1.85 Min.

(Manville Ceraform 126 -
1/2" Thick or CFM
Corporation EH2416 - 1"
Thick)

Fig. 28 Noncombustible wall shield dimensions.

FP838

The top of insulation must be covered with a noncom-
bustible decorative covering or a piece of .018” mini-
mum sheet metal, to protect hearth extension material.
(Fig. 29)

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 noncombustible
material.  (Figs. 29, 31, 32, 33)

WARNING:  HEARTH EXTENSION MUST BE IN-
STALLED IN ACCORDANCE WITH FIGURE 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 conductiv-
ity (K), may be obtained from manufacturer of the
material.  Factors are related by the formula K = 1/R.
(Fig. 29)

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 resis-
tance (Rt).

Example of Determining

Hearth Extension Equivalents

To determine the thickness required for any new
material:

NEW
required
thickness 

K of new material (per inch)

K of listed material (per inch)

thickness
of listed
material

=

x

Example for Common Brick

T (new) = 5.0/0.458 x 0.50 in. = 5.46 in. (new required
thickness).

Hearth Installation

A hearth extension is required to protect a combustible
floor in front of the fireplace.  Refer to Figure 29 for
minimum dimensions and mounting detail.

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

The hearth extension described in Figure 29 must be a
durable noncombustible material with a minimum (total)
Rt value of 1.09; refer to Figure 30 for examples. The
overall height (above a combustible floor), depth and
width must be as indicated, with the extension centered
to the fireplace opening.

FP533ADD

Fig. 30  Hearth extension material factors.

Common Materials And Factors

Material

K*

R

Minimum

Thickness

EH2416 

Common Brick

0.458

5.0

1.09    0.50 in.**        

0.10    5.46 in.**       

(CFM Corporation)

    R Value is for 

¹⁄₂

 inch.

  * Units of K = BTU/SQ FT/HR/ßF/IN
** Thickness of Listed Material

Summary of Contents for SHR36

Page 1: ...ls SHR36 SHR42A SHR48 SHR52 Underwriter s Laboratories Report No MH6018 DO NOT DISCARD THIS MANUAL Retain for future use 20001384 7 04 Rev 13 410 Admiral Blvd Mississauga Ontario Canada L5T 2N6 905 67...

Page 2: ...CFM Spe cialty Home Products in combination or assembly with a Majestic Fireplaces fireplace system notwithstanding any independent testing laboratory or other third party ap proval of such component...

Page 3: ...ine Access Gas Line Access 1365mm FP546A Fig 2 SHR42A Series specifications and framing SHR42A Series Woodburning Fireplace 36 914mm 46 1175mm 44 1118mm 24 610mm 7 189mm 13 Dia 340mm Rough Opening Wid...

Page 4: ...Access Gas Line Access 1518mm SHR48 Series Woodburning Fireplace Fig 3 SHR48 Series specifications and framing FP545A 9 235mm 52 1321mm 62 1584mm 52 1334mm 33 838mm 7 189mm 13 Dia Rough Opening Width...

Page 5: ...ion FP554A Fig 5 Fireplace and chase parts identification SHR48 shown Termination Cap Storm Collar Pan Flashing Batt Insulation cut out around firestop Firestop Ceiling Level Draftstop Ledge Bracket S...

Page 6: ...measured from the hearth to the chimney exit SHR36 SHR42A SHR48 SHR52 Max 90 90 90 90 Min 0 Elbows 14 6 14 6 16 0 16 0 2 Elbows 15 6 15 6 19 0 19 0 4 Elbows 21 0 21 0 24 0 24 0 B Do not use more than...

Page 7: ...nation 2 A chimney cannot be offset more than 30 degrees 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 ang...

Page 8: ...ation or how the chimney system should be run contact your Majestic Fireplaces dealer for assistance Insulating Fireplace Enclosure for Cold Climates If you live in a cold climate it is not required b...

Page 9: ...he fireplace 3 Slide the rear firebrick back into the left corner behind the end of the left firebrick Push both panels back as far as possible into the left side and corner 4 Swing the right side of...

Page 10: ...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 sec...

Page 11: ...le 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 1 inches wide and equal in length to the metal strips...

Page 12: ...ers provide minimum required air space to chimney pipe for ceiling thickness up to eight 8 inches When combined thickness of ceiling material ceiling joists and flooring material exceeds eight 8 inche...

Page 13: ...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...

Page 14: ...n the front standoffs that may be used to attach finish material Fig 23 Finish Wall Finish the wall with material of your choice Do not install a combustible mantel shelf less than 12 305mm from the t...

Page 15: ...5mm min 1 6 159mm Min 1 FP531 Fig 22 Mantel clearance Header Must be sealed with noncombustible material Surround Face Finished Wall Ledge Bracket Finished Wall Ledge Bracket Combustible Mantel and Tr...

Page 16: ...Not Place Finishing Material Beyond These Edges or Cover Air Inlets Screen Rail Hearth FP1168 Fig 26 Finishing front of fireplace MA81 Fig 27 Combustible mantel clearances 1 Ref Combustible materials...

Page 17: ...resistance Rt value of the alternate material employed is greater than or equal to R 1 09 Thermal resistance R or thermal conductiv ity K may be obtained from manufacturer of the material Factors are...

Page 18: ...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 facin...

Page 19: ...pecialty Home Products 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...

Page 20: ...05299 4 Screen Rod two per fireplace 7554181 7554199 20001428 20002790 5 Screen two per fireplace 7554295 20001723 20001723 20005278 6 Screen Pull two per fireplace 5584139 5584139 5584139 5584139 7 P...

Page 21: ...lable from your local Majestic Fireplaces distributor Should you need additional information beyond what your distributor can furnish contact CFM Specialty Home Products 410 Admiral Blvd Mississauga O...

Page 22: ...roof Flashing not included For use with Vermont Castings Majestic Products Type 11CF Chimney Systems Used to terminate chimney at top of chase Adapter kit included Flashing not included Used to build...

Page 23: ...ject to the following conditions and limita tions 1 This warranty is extended only to a Fireplace installed in the continental United States the state of Alaska and Canada only if and so long as the F...

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

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