9
WARNING
DO NOT RECESS THE VENT CAP INTO WALL OR SIDING.
IMPORTANT
Horizontal vent sections require 1/4 in. (6 mm) rise for every 12 in. (305 mm) of travel.
Vent cap location must be in compliance with the guidelines 11.3 Vent Cap Location Clearances, on page 19.
CAUTION
Cold air transfer area. The surrounding fireplace chase must comply with all clearances as outlined in this manual and be
constructed in compliance with local building codes. Outside walls should be insulated to prevent cold air from entering room.
3.5
Hearth Construction and Requirements
Determine the exact position of your fireplace, including hearth height, width, and depth. If possible, place the fireplace in such a manner
that the vent termination will be placed between two studs, thus eliminating the need for additional framing.
If masonry is to be used (optional), prepare the necessary foundation for the masonry load. When masonry construction is being used, a
lintel must be used over top of fireplace to support the added weight.
Consider the height of hearth finish material (stone, brick, etc.) when building a fireplace platform. The bottom of the fireplace must be
level with finished hearth.
Build the hearth to desired size and height. If a hearth extension is desired, combustible material may be used.
MINIMUM PLATFORM SIZE: 48-3/4 in. (1238 mm) wide x 19 in. (482 mm) deep.
WARNING
Install the fireplace on a hard metal or wood surface that extends the full width and depth of fireplace.
ABOVE FLOOR LEVEL INSTALLATIONS: A solid, continuous platform must be constructed below the appliance.
FIRE HAZARD
Do NOT install directly on carpeting, vinyl, or any combustible material other than wood.
3.6
Vent Termination Framing
35-5/8”
(905 mm)
19”
(483 mm)
Figure 3.3, Min. Horz. Termination
(Natural Gas and LP Gas)
43”
(1092 mm)
19 “
(483 mm)
Figure 3.5, Horizontal Flex Pipe
Vent Termination
47-5/8”
(1210 mm)
19”
(483 mm)
Figure 3.4, Max. Horz. Termination
6 in. + 9 in. (LP Gas)
Vertical
Vent Terminations:
Follow vent pipe manufacturer’s installation instructions for vertical vent termination framing.
A minimum of 1 in. (25 mm) clearance on all sides of the vertical vent pipe must be maintained.
Horizontal
Vent Terminations:
Framed openings illustrated in Figures 3.3—3.5 are measured from the bottom of the fireplace
enclosure floor to the center of the pipe to maintain vent system clearances.
A wall thimble with a 1 in. (25 mm) clearance for all vent sides is required for all horizontal vent runs.
