7
If asked, advise the local authorities that the Mason-Lite
Fireplace is designed for installation per the National Fire Pro
-
tection Association Standard for Chimneys, Fireplaces, Vents
and Solid Fuel-Burning Appliances (NFPA211).
When choosing the location consider outside air requirements
to determine if it will be on the left or right side of the Fireplace.
In the case of an island installation, outside air accessibility
may be obtained through subflooring. See section on Installing
Outside Air on page 15.
Figure 5
Internal Wall
Installation
Island
Installation
Typical
Installations
Clearances to Combustibles
The distance to be maintained from the surfaces of the
fireplace to combustibles must be observed. Below is a list of
the most common combustible materials to name a few:
Drywall
Wood flooring
Plywood
Sub-flooring
Wood Framing
Particle board
Mill board
Plywood paneling
Maintain the following clearances:
•
Unit front, sides, rear: 0”
•
Combustible Floor: 0”
•
Combustible Sheathing above opening top: 2” (51 mm)
•
Sheathing or trim to opening sides: 8” (203 mm)
•
Mantel above opening: (refer to
Figure 6
)
•
Opening to sidewall: 24” (609 mm)
•
Hearth extension beyond front: 20” (508 mm)
•
Hearth extension beyond sides: 12” (305 mm)
•
Insulation from firebox: 0”
NON-COMBUS-
TIBLE
MATERIAL
COMBUSTIBLE MATERIAL
MANTEL SHELF
SAFE ZONE FOR
PROJECTION OF
COMBUSTIBLE
MATERIAL
1 1/2”
DISTANCES TO UNDERSIDE
OF MANTEL
TOP OF
FIREPLACE
OPENING
ALL MINIMUM
DISTANCES ARE
IN INCHES
UNDERSIDE OF
MANTEL SHELF
33°
10” 16”
Figure 6
Understanding Clearance to Combustibles
There is a build-up of considerable amount of radiant heat on
the outer surfaces of the Mason-Lite Fireplace. It’s critical that
proper clearances to combustibles be maintained so that this
radiant heat is maintained to safe limits.
Combustible Floor Clearances
MGFPST43 Mason-Lite Fireplaces have been designed with
zero clearance to combustible floors.
Mason-Lite Fireplace & Chimney System
Prior to starting the installation, check with local, regional or
state codes for any restrictions or required permits regarding
your fireplace installation.
1) The Mason-Lite is designed to be installed with a listed B-
vent or UL-103-12” I.D. Class A, Metal Chimney System.
2) This Mason-Lite fireplace is intended as a supplemental
heat source only. It is not intended as a primary heat
source.
3) It is the responsibility of the contractor installer (not the
manufacturer) to ensure that adequate combustion air is
provided for proper function of this fireplace. Fireplaces
take up a large volume of replacement air from outside the
house and if the house is of airtight construction, smoke
spillage may occur if proper draft is not achieved.
4) There are many conditions beyond a manufacturer’s control
regarding improper fireplace operation. The manufacturer
cannot ensure “smoke free” operation, nor can the
manufacturer take on the responsibility for problems with
surrounding construction; chimneys that have not been
built at the right heights; system drafts caused by faulty
mechanical systems; adverse weather conditions or any
other inclement environmental situations over which the
manufacturer has no control.
5) Inspect all fireplace & chimney components for evidence
of damage prior to starting installation. Consult your local
distributor for replacement parts if necessary.
6) Under no circumstances should you make any adjustments
or modifications to the chimney system during the
installation procedure. If you do, you are not only liable
for negating the warranty, but you could very well cause a
serious malfunction of the fireplace. You must follow your
chimney manufacturer’s instructions.
Installing the Gas Fireplace
