This appliance is for installation only in a solid-fuel burning masonry or UL127
factory-built fireplace or in a 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 DST30 Series unvented room heater is approved for installation into the following unvented fireplaces:
The DST30 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 Z21.91-2000 (typically referred to as a "Universal
Firebox"), as long as firebox hearth dimensions meet the minimum hearth dimensions shown below.
Model
DST30
43D0122
GPF36, GSTF36, GRCF36, GLCF36
A
B
C
1
36"
20
/
"
21
4
Figure 2 - Hearth Minimum Dimension for Solid Fuel Burning
Fireplaces and UL127 Factory Built Fireplaces
FIREPLACE AND HEARTH DIMENSIONS
1
/
"
2
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9