Cavity (Chase) Construction Notes - ORTAL Lyric Front Facing Series Installation And Operation Manual

Cavity (Chase) Construction Notes

Non-combustible Framing
The wall behind a Lyric fireplace (either at the back or side of the fireplace) and the ceiling above the fireplace
must be non‐combustible construction such as 5/8" Type X Drywall, concrete, brick, concrete masonry units,
or plaster on metal framing and lath. Penetrations in the wall or ceiling, such as electrical boxes, must be
removed and patched to assure integrity of the non‐combustible enclosure.
Combustible Framing
New and existing walls or ceilings built of combustible materials may be used if the exterior wall and internal
ceiling are covered with 5/8" Type X Drywall (or equivalent).
An exception to this rule is when the walls of the chase do not extend all the way to the ceiling and allow a
"gap" for heat release. In this scenario, ½" Type X Drywall (or its equivalent) may be used to match the
thickness of Type X Drywall used on the ceiling outside the chase.
Floor
A Lyric fireplace can be set on wood, concrete, metal and other typical solid floor types. Lyric fireplaces come
with legs that position the fireplace above the floor or platform on which they are installed. To raise a Lyric
fireplace, build a stable platform to which the fireplace can be secured. To lower a fireplace, legs cannot be
altered or removed. The fireplace must be recessed into the floor.
Installing the Fireplace and Venting
The installation of the fireplace and venting can only be completed by an authorized Lyric dealer unless
otherwise authorized by the manufacturer via documented approval. Lyric fireplaces must be installed in
accordance with the Lyric Installation Manual and applicable local and national building codes. Install the
direct vent pipe, make gas and power connections, and provide fire stopping or thimble where the direct vent
pipe penetrates the wall or ceiling of the chase.
Building the Front Wall
It is recommended to postpone installation of the front wall of the cavity until after the fireplace and pipe have
been installed. This will allow easy access for positioning the Lyric fireplace and pipe and making necessary
connections.
Install framing in accordance with building codes and project specifications. All studs are placed 16 inches on
center, or per local code.
Plan your work carefully, paying attention to:
•
Required clearances (see "Clearance & Finish Diagrams" section for details).
•
Blocking for securing the fireplace, direct vent pipes, mantles, drywall, etc.
•
Access panel for the gas valve and receiver fireplace (see "Access Panel" section for details).
•
Heat release (see "Heat Release" section for details).
•
Direct vent, direct vent strapping, and penetrations through walls and ceiling.
•
Recesses for TV, audio speakers, light fixtures, art work, and other items built into chase (if required).
•
Make sure the fireplace is bearing no weight of the finish or framing material (other than 5/8" Type X
drywall).
Take a moment for a final visual inspection of the chase interior. Remove any construction debris that may be
inside the chase.
Install conduit, wiring, power outlets, and electrical boxes between framing members with 5/8" Type X
Drywall (or equivalent) on both sides.
Lyric Installation Manual: Built-in Models, April 2019 61