mFi MASON-LITE MFP- 75, Instructions Manual

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Follow your chimney manufacturer’s instructions on specific
guidelines pertaining to their chimney and Firestop Radiation
Shield installation instructions.
Fireplace Finishes & Combustible Trim
Clearances
Hearth Material & Dimensions – Strict codes control
the types of materials that you can select for your Mason-Lite
Fireplace’s hearth as well as the hearth’s length and width. All
hearth extensions must be made of code-rated,
noncombustible materials such as tile, brick, concrete or
stone.
As with any radiant heat fireplace, all MASON-LITE
Fireplaces must comply with building code safety
clearances, per units that have openings of 6 sq. ft. (six
square feet) or greater. For Mantel clearances see
Clearances to Combustibles . Walls that Adjoin – Safety
codes and all practical outlooks insist that your fireplace
cannot be installed closer than 2 ft. (two feet) to any walls in
the room the fireplace is housed in or to any walls of
adjoining rooms.
Caution in Regards to Combustibles – If any part of the
fireplace or objects in the room (curtains, rugs, paint,
cushions, etc.) start to show warping or discoloration due to
heat from the fireplace, it is time to take immediate action. Do
not use the fireplace until you have figured out how to
address the problem. You are facing a potential fire hazard.
MFI cannot be responsible for the make-up of material on the
exterior of the fireplace you have chosen, nor can MFI be
held responsible for the materials in a room that may be
responding negatively to heat. However, in almost all cases,
there is a solution to the problem, either by making
adjustments to airflow or the modifications to the room itself.
Installing Outside Air
The Mason-Lite Fireplace needs enough replacement
air to function properly and some local building codes may
require outside combustion air to be provided. If no
replacement air is provided, improper flue drafting may occur,
creating negative pressure whereby smoke may enter the
home, especially in homes that are very well insulated and
tightly sealed. Check local building codes for specific
requirements.
Install Combustion Air Kit MFP4-AK into the MASONLITE
Firebox through the side wall opening provided. A 4” dia.
hole will also be required through the firebrick side lining. The
tubing that goes out of the firebox wall must feed into a
flexible metal conduit as the source for outside combustible
air. It can go straight out through an outside wall or into a
ventilated crawl space. If crawl space is used, check codes
for proper termination.
Be sure that you carefully check the source of the outside air
before you choose the site for your air intake. You don’t want
a place where snow will collect, where bushes or trees will be
growing or a location that is too close to any other structure.
Install a screened termination cap to keep out small animals.
Adding a Gas Pipe
You may elect to add a vented decorative gas appliance (gas
log) to your Mason-Lite Fireplace. If so, follow the installation
instructions from the Decorative Gas Appliance manufacturer.
Familiarize yourself with requirements for installation as
outlined by the National Fuel Gas Code, ANSI Z223.1.This
gas pipe provision should only be used on a decorative gas
appliance.
You can route the gas piping practically anywhere in the
firebox – the floor, back wall or side walls. You will just need a
masonry drill; the instructions from the gas appliance
manufacturer will be very straightforward.
Fill in the holes you have drilled around the gas piping with the
regular MASON-LITE mortar.
Follow the Gas Log manufacturer’s instructions.
Adding Electrical Connections
Like the gas line, electrical feed lines can be run through the
floor, back wall, or side walls. Follow local building and
electrical code requirements.
Fireplace Door Accessory
To complete your fireplace installation, a fireplace grate will be
required for safe operation. The fireplace grate can be
obtained from MFI or if choosing an alternate, it must be sized
to 50% of the hearth maximum. Additionally, a fireplace
screen must be installed for safety.
When ordering, please refer to the parts lists in the beginning
of this manual.