These fireplaces have been marked with a maximum rating of 40,000 BTU to assure that homeowners do not exceed the allowable lim- its for all allowed installations of mantles.
NEVER INSTALL AN UNVENTED GAS LOG SET WITH A BTU GREATER THAN 40,000.
CAUTION: WHEN USING THE DECORATIVE GAS APPLIANCE, THE FIREPLACE DAMPER MUST BE SET IN THE FULLY OPEN POSITION.
CAUTION: PLUMBING CONNECTIONS SHOULD ONLY BE PERFORMED BY A QUALIFIED, LI- CENSED PLUMBER. MAIN GAS SUPPLY MUST BE OFF WHEN PLUMBING GAS LINE TO FIRE- PLACE OR PERFORMING SERVICE.
If you’re installing a gas line, connect it before the fireplace is framed and enclosed in the finished wall. The gas knockout is determined by the indentation located at the bottom and slightly off center in the side refractories. THE
KNOCKOUT IS ALWAYS REMOVED FROM IN- SIDE THE FIREPLACE. DO NOT REMOVE THE KNOCKOUT UNLESS YOU ARE INSTALLING A GAS LINE. If removal is attempted from the outer wrapper, side refractory damage may occur. With a
IMPORTANT: REPACK INSULATION MATERIAL IN SQUARE HOLE AROUND GAS LINE, INTE- RIOR AND EXTERIOR OF FIREPLACE, TO SEAL.
Glass Doors
COLD CLIMATE INSULATION
If you live in a cold climate, it is especially important to seal all cracks around the fire- place opening with noncombustible material and wherever cold air could enter the room. Surrounding materials must be caulked where it meets the black metal facing of the fireplace to avoid cold air intrusion. Use noncombus- tible caulking material only on fireplace facing to seal. Also, the outside air inlet duct should be wrapped with noncombustible insulation to minimize the formation of condensation. Do not place insulation materials on top of fire- place or against chimney sections.
Note: A 2" air space must be preserved for all combustible materials extending for any con- tinuous length adjacent to the chimney.
It is especially important to insulate between the studs of an outside chase cavity and under the floor if the floor is above ground level. Do not place insulation directly against the fire- place or chimney system.
FIREPLACE FINISHES
Mantels and Trim
It is sometimes best to frame your fireplace after it is positioned and the chimney is in- stalled. Frame enclosure for chimney and fire- place with 2 x 4’s (or heavier) lumber.
12” Max.
Combustible
Finished Wall
Combustible
Mantel
Note: The header may rest on the two (2) metal top spacers on top of the unit but the header must not be notched to fit around the spacers.
These fireplaces may sit directly on a combus- tible surface. A 2" air space is required be- tween combustible framing and the chimney. Combustible mantels and trim may be in- stalled 12" above the fireplace opening as per NFPA 211, Section
Hearth Extensions and Wall Shields
A hearth extension must be installed with all fireplaces. It is to protect the combustible floor in front of the fireplace from both radiant heat and sparks. The hearth exten- sion must extend beyond the front at least 20" (508 mm) and both sides at least 12" (305 mm) (see Figure 43 ).
Use a hearth extension constructed of a durable noncombustible material having an equal or better (lower k value) insulating value of k = .84 BTU IN/FT2 HR ° F or a thermal resistance that equals or exceeds r
=1.19 HR ° F FT2/BTU IN. With these values, determine the minimum thickness/material required using the formula and Page 17.
Header
False Header
Combustible Surround
Materials 1 ¹⁄₂” Thick Max.
If glass doors are to be installed on these fireplaces, refer to specific installation instruc- tions packed with the glass doors. Use only the doors that are listed for use with these fire- places. Use of other
12”
Min.
7 ¹⁄₂” Min.
CAUTION: CERTAIN GLASS DOORS OVER- LAP THE BLACK METAL FACING OF THE FIRE- PLACE. IF THE FIREPLACE HAS BEEN FACED WITH NONCOMBUSTIBLE MATERIALS, THERE MIGHT NOT BE SUFFICIENT CLEAR- ANCE TO INSTALL THE GLASS DOORS OF YOUR CHOICE. ENSURE ADEQUATE CLEAR- ANCE IS MAINTAINED AT ALL TIMES SO AS NOT TO INTERFERE WITH THE INSTALLA- TION AND OPERATION OF GLASS DOORS.
Fill With Non-
Combustible
Material
Decorative Facing
(Do Not Overlap
The Opening) Steel
Lintel
Figure 42
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Seal Any Gap With
Material
15