28
Hearth Requirements
Unit Raised Above Combustible Hearth or Floor
Face of
Cement
Board
Top Face of
Combustible
Floor or Carpet
4” MIN.
Base of Fireplace
Combustible
Floor
Rules
1. A hearth is not required. However, any hearth/fl oor in front of fi replace within 4 inches vertically of the bottom of
the unit must be non-combustible and project a minimum distance as shown on page 29. Hearth/fl oors within
4 inches must have a non-combustible fi nish
applied over the 1/2 inch insulation board
provided with the
engine. This insulation board acts as a thermal break.
2. Minimum hearth projection is determined by a combination of the height of the hearth above the surface of
combustible fl oor or carpet and the distance between the hearth and the bottom of the fi replace.
3. Combustible baseboards (1 inch thick or less) located on the wall are acceptable provided they are located
below the base of the raised fi replace.
When the appliance is installed directly on
carpeting, tile or other combustible material
other than wood fl ooring, the appliance
shall be installed on a metal or wood panel
extending the full width and depth of the
appliance
Note:
Any shims used underneath to raise
the heater should be set-back 1/2” behind
front face of framing otherwise top face of
shims may be visible.
QUALIFIED
INSTALLER
Summary of Contents for 1100JN
Page 78: ......
