Operating instructions

39D3200 9
A
C
D
B
WARNING
WARNING
Model A B C D
YS 18" 13" 27" 17"
FIREPLACE AND HEARTH DIMENSIONS
Use manufacturer's installation and clearance requirements as defined in their manual.
The YS Series unvented room heater is approved for installation into the following unvented fireplaces:
GCUF Series Fireboxes 32, 36, or 42
The YS 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 (typically referred to as a "Universal Firebox"), as long as firebox
hearth dimensions meet the minimum hearth dimensions shown below.
Figure 2 - Hearth Minimum Dimension for Solid Fuel Burning
Fireplaces and UL127 Factory Built Fireplaces
This appliance has been specifically tested and design certified for installation only
in a solid-fuel burning fireplace including factory-built UL127 fireplaces and masonry
fireplaces, or in a listed ventless firebox (see below).
Exception: DO NOT install this appliance in a factory-built fireplace that includes
instructions stating that it has not been tested or should not be used with unvented
gas logs.