CFM Corporation SHR48, SHR52, SHR42A Minimum Wall Clearances, Minimum Hearth Extension Dimensions

Page 18

SHR Series Woodburning Fireplace

Minimum Wall Clearances

WITH

 

WITHOUT

 

Noncombustible

 

Noncombustible

Surround Facing

 

Surround Facing

4" Brick

 

Shaded area starts

 

1/2" away from

 

(Example material)

 

edge of unit

 

 

 

4"

 

E F**

Firebox

E

D

 

Opening

 

C**

A - Min. clearance

 

 

 

to combustible

 

 

Side

perpendicular wall

 

 

B - Min. clearance

Side

 

Wall

to combustible

Wall

 

 

perpendicular wall when

 

 

using noncombustible wall shield*

 

Combustible material permitted within shaded area.

*Noncombustible wall shield requires 1" CFM Corporation 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.

Minimum Hearth Extension Dimensions

(for On-Site Construction)

 

H

G

G

 

 

 

 

 

 

J

 

Seal cracks

 

 

May install

between the

 

noncombustible

fireplace

 

 

decorative

and hearth

 

 

covering

extension with

 

OR .018" min.

noncombustible

 

sheet metal

material

 

Fireplace

 

 

 

Hearth

4" Min.

 

 

 

Combustible

Minimum

Safety strips

Floor

Insulation

must overlap

 

Value "R":

���" minimum

 

A

B

C

 

D

E

F

G

H

J

 

 

SHR36

20"

12"

35°

 

42°

18"

14"

8"

16"

52"

 

(508 mm)

(305 mm)

 

 

 

(457 mm)

(356 mm)

(203 mm)

(406 mm)

(1321 mm)

SHR42A

22"

18"

32¹⁄°

 

39¹⁄°

18"

14"

12"

20"

66"

 

(559 mm)

(457 mm)

 

 

 

(457 mm)

(356 mm)

(305 mm)

(508 mm)

(1676 mm)

SHR48

28"

18"

26¹⁄°

 

33°

18"

14"

10"

24"

68"

 

(711 mm)

(457 mm)

 

 

 

(457 mm)

(356 mm)

(254 mm)

(610 mm)

(1227 mm)

SHR52

30"

20"

33¹⁄°

 

38¹⁄°

24"

20"

14"

24"

80"

 

(762 mm)

(508 mm)

 

 

 

(610 mm)

(508 mm)

(356 mm)

(610 mm)

(2032 mm)

 

 

 

 

 

 

 

 

 

 

 

FP532SHR

Fig. 32 Combustible side wall protection and hearth extension dimensions.

Noncombustible Decorative Covering May be Installed or

.018" Minimum Sheet Metal

2¹⁄₂" Min.

Combustible

Floor

Seal Cracks Between Fireplace and Hearth Extension with Non- combustible Material

Lower Sur-

roundFireplace Hearth

Seal Cracks Between Fireplace and Hearth

Extension with Noncombustible Material

Noncombustible

Lower

 

Surround

 

Material 7⁷⁄₁₆" Max.

 

Noncombustible

 

Thickness

Fireplace

Combustible

Material

Hearth

 

 

 

Floor

 

 

1/4" Min.

 

 

Min. Thickness

 

 

 

(Refer to Table 4)

 

Majestic Safety

 

 

 

 

 

 

Strips Must be

Minimum Insula-

Overlapped 1/2"

tion Value R-3.28

Min.

(Refer Table 4)

FP1169

 

 

 

Thickness

Majestic Safety

Minimum Insulation

Strips Must be

Value R-0.94

Overlapped 1/2"

Min.

 

 

FP1170

Fig. 33 Protection of adjacent combustible side walls and hearth extension dimensions.

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Contents SHR Series Safety Information Table of ContentsSHR36 Series Woodburning Fireplace SHR48 Series Woodburning Fireplace Chase Installation Chimney Requirements Offset Installations 30˚ Elbow OffsetsIllustration Key Planning the Chimney Run Planning InformationMounting the Fireplace Ten Foot RuleChimney Supports InstallationChase Installation Insulating Fireplace Enclosure for Cold ClimatesFirebrick Installation FramingChimney Set-up Ceiling Chimney Hole Possible Obstructions Straight-Up Chimney InstallationOffset Installation Cutting the HolePositioning, Safety Strips Securing the Fireplace Installing Outside Air KitInstalling the Chimney System Installing the Firestop Spacer Ceiling HoleProper Firestop Spacer Installation Additional Ceilings Continue Installing Pipe to Complete RunCanadian Requirements For Insulation Shield Penetrating the RoofInstalling Chimney in a Chase Install Remainder of Chimney SectionsInstalling Top Housing or Termination Cut and Frame Roof HoleMantel clearance Facing on fireplace surround flush with finished wall Example of Determining Hearth Extension Equivalents Hearth InstallationSide Wall Protection Example for Common BrickMinimum Hearth Extension Dimensions Minimum Wall ClearancesInstalling Line for Gas Logs Sealing detailSHR36/42A/48/52 Woodburning Fireplace Accessories Accessory Description Model NoSLTCF11 Limited Warranty & 30 Year Protection Plan For Majestic Fireplaces PRE-ENGINEERED Fireplace SystemsCFM Corporation