Fireplace And Hearth Dimensions - Monessen Hearth MJ27NR Installation And Operating Instructions Manual

This appliance is for installation only in a solid-fuel burning masonry or
uL127 factory-built fireplace, vent free appliance, or in listed ventless
firebox enclosure. It has been design certified for these installations.
Exception: DO NOT install this appliance in a factory-built fireplace that
includes instructions stating it has not been tested or should not be used
with unvented gas logs.
use manufacturer's installation and clearance requirements as defined in their manual.
The MJ Series unvented room heater is approved for installation into the following unvented fire-
places:
GCuF Series Fireboxes Magnum36/42, Lo-Rider36 or BUF
The MJ Series unvented room heater may also be installed into a Ventless Firebox Enclosure for
Gas Fired Decorative Type Unvented Room Heaters per IAS Requirement No. 2-97 ANSI Z21.91-
2001 (typically referred to as a "Universal Firebox"), as long as firebox hearth dimensions meet
the minimum hearth dimensions shown below.
86D0024
19"
30"
Figure 2 - Minimum Hearth Dimension
FP1994
Min. hearth dims

FIREPLACE and HEARTH DIMENSIONS

27"
14"
9