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Heatilator •
HEIR36, HEIR42, HEIR50 • 2285-900 Rev. D • 8/12
Figure 5.10 Non-Combustible Hearth Extension Dimensions
MODEL A B
in. mm in. mm
HEIR36 12 305 57-1/4 1454
HEIR42 12 305 63-5/16 1608
HEIR50 12 305 71-5/16 1811
A
B
NON-COMBUSTIBLE
NON-COMBUSTIBLE
BOARD
HEARTH CLEARANCE
BRACKET
WOOD OR OTHER COMBUSTIBLE
FLOOR OR PLATFORM
4 IN.
3 IN. MIN.
BOTTOM OF
FIREPLACE
1/2 IN. MAX.
THICKNESS
COMBUSTIBLE
BUILDING
MATERIAL
Figure 5.12 Appliance Raised a Minimum of 3 Inches Above
Combustible Surface.
Non-Combustible Hearth Extension NOT REQUIRED.
NON-COMBUSTIBLE
BOARD
HEARTH CLEARANCE
BRACKET
NON-COMBUSTIBLE
HEARTH EXTENSION
1 IN. THICK MAX.
WOOD OR OTHER COMBUSTIBLE
FLOOR OR PLATFORM
E. Hearth Extension
WARNING! Risk of Fire! Non-combustible hearth exten-
sion may be required when appliance is installed on com-
bustible surface.
• Hearth extension must be non-combustible and
serves to protect combustible fl oors in front of appli-
ance. See Figure 5.11.
• The base of the fi replace may sit on a combustible sur-
face. See Figure 5.11. The area in front of the appli-
ance must be protected by a non-combustible hearth
extension, unless the appliance is raised a minimum
of three inches above the combustible fl oor or hearth.
See Figure 5.11 and Figure 5.12.
Figure 5.11 Appliance Installed on Combustible Surface
Non-Combustible Hearth Extension REQUIRED.
NOTICE: DO NOT install a hearth that is greater than
one inch thick. Hearth will interfere with installation of
glass assembly. Total hearth height must not exceed one
inch from bottom of appliance when appliance is installed
directly on fl oor (including mortar, backer material, etc.)
If a hearth greater than one inch in thickness is desired,
the appliance must be raised by the equivalent height
to ensure that the hearth does not interfere with the
installation of the glass assembly required for fi replace
operation. See Figure 5.11.