Instructions
Masonry Firebox
Model MFPST-43
THIS WOOD-BURNING FIREPLACE COMPLIES WITH UL127 STANDARD AS A FACTORY-BUILT APPLIANCE.
nWARNING: THIS FIREPLACE IS APPROVED FOR USE AS A WOOD BURNING FIREPLACE.
IT HAS NOT BEEN TESTED OR APPROVED FOR UNVENTED GAS LOGS.
nWARNING: IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE CAN
CAUSE INJURY, PROPERTY DAMAGE OR LOSS OF LIFE. REFER TO THIS MANUAL FOR ASSISTANCE OR
ADDITIONAL INFORMATION. CONSULT A QUALIFIED INSTALLER OR LOCAL DISTRIBUTOR.
SAVE THIS BOOK
This book is valuable. In addition to instructing you on how to install and maintain your appliance, it also contains
information that will enable you to obtain replacement parts or accessory items when needed. Keep with your other
important papers.
Do not store gasoline or other fl ammable vapors and
liquids in the vicinity of this or any other appliance.
REV 13 DEC 2009
Report No. 08-154
ICC Evaluation Services
Report No. 2401
This page has been left intentionally blank.
CONTENTS
CONTENTS
Fireplace Parts Diagram for Combustible Floors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 2
Fireplace Parts Diagram for Non-Combustible Floors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 3
Fireplace Overall & Framing Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 4
Fireplace Framing Dimensions (Combustible Floor Systems) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 5
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 6
Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 7
Clearance To
Combustibles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 8
Mason-Lite Fireplace & Chimney System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 8
Supporting Floor Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 9, 10
Mason-Lite Weight Determination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 10
Mason-Lite™ Component for combustible floors: 8” Metal Base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 11
Fireplace Assembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg.12 ~ 14
Firestop Radiation Shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 14
Mason-Lite™ Firebrick Liners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 15
Fireplace Finishes and Combustible Trim Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 16
Mantle and Mantle Shelf Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 16
Installing Outside Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 16
Adding a
Gas Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 16
Adding Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 16
Mason-Lite Chimney Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 17
Installing Damper and Chimney System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 17
Fireplace Door Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pg. 17
Mason-Lite Owner’s Operation & Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 18
Starting A Fire and Basic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 18
Annual Fireplace Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 19
Customer Service & Parts
Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 19
Appendix I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 20
Appendix II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 2
1
Below is a sample picture of the rating plate that is located inside the lower dome side of your fi replace. Serial number and date
code should be stamped on the plate where required.
DO NOT REMOVE THIS LABEL
See MFI’s installation and operating instructions for
Masonry
Fireplace
MFI
315 WEST 3RD ST.
SANT
A ANA, CA 92701
MODEL
:
No.
!
WARNING:
Industries, LLC
MFPST43
THIS FIREPLACE HAS
BEEN TESTED FOR USE
ONLY WITH APPROVED
GLASS DOORS. TO
REDUCE THE RISK OF
FIRE OR INJURY,
CONSULT OWNER’S
MANUAL.
THIS APPLIANCE NEEDS FRESH AIR FOR SAFE OPERATION AND MUST BE INSTALLED
SO THERE ARE PROVISIONS FOR ADEQUATE COMBUSTION AND VENTILATION AIR
this model. Contact local building officials about
restrictions and installation specifications in your area.
DATE OF MFG.
!
THIS FIREPLACE IS
DESIGNED FOR USE
ONLY WITH SOLID WOOD
LOGS, PLUMBED LPG OR
NG LOG LIGHTERS OR
PLUMBED ANSI Z21.60
DECORATIVE GAS LOGS.
Consult instructions
included with this firebox
for further information.
SERIAL No.
!
WARNING:
Use only approved, listed
UL103-16” I.D. Class A
Chimney System.
Please refer to pipe mfg.
installation instructions.
Chimney Height
Max.: 40 ft.
Min.: 14 ft.
(17 ft. with 1 or 2 offset
sections maximum)
FIREPLACE CLEARANCES TO COMBUSTIBLES:
UNIT FRONT, SIDES, REAR.............................................2” (50 mm)
COMBUSTIBLE FLOOR....................................................8” (200 mm)
COMBUSTIBLE SHEATHING ABOVE OPENING TOP.....8” (200 mm)
SHEATHING OR TRIM TO OPENING SIDES...................8” (200 mm)
MANTLE ABOVE OPENING...........................................12” (300 mm)
OPENING TO SIDE WALL..............................................24” (600 mm)
:
HEARTH EXTENSION BEYOND FRONT.......................20” (500 mm)
HEARTH EXTENSION BEYOND SIDES........................12” (300 mm)
INSULATION FROM FIREBOX.........................................2” (50 mm)
MANTEL CLEARANCES
0” - 3” : 1-1/2” MAX. PROJ.
3“ - 12” : 1-1/2“ - 8” MAX. PROJ.
.
MANTEL ABOVE OPENING:
MIN. - 3” SHEATHING OR TRIM
TO OPENING SIDES - 8”
LISTED MASONRY FIREPLACE SYSTEM COMPLIES WITH APPLICABLE REQUIREMENTS OF UL127
Fireplace is designed for installation per the National Fire Protection Association Standard
for Chimneys, Fireplaces, Vents and Solid Fuel-Burning Appliances (NFPA 211).
!
WARNING:
TO REDUCE THE RISK OF FIRE OR INJURY, DO NOT INSTALL AN UNVENTED GAS LOG SET INTO
rev 09_18 NOV 2009
THIS FIREPLACE HAS NOT BEEN TESTED WITH AN UNVENTED GAS LOG SET.
FIREPLACE.
Report No.
08-154
ICC Evaluation
Services Report
No. 2401
1
MFPST-43 Fireplace Parts Diagrams
MFPST-43 Fireplace Parts Diagrams
Combustible Floor Systems
Non-Combustible Floor Systems
Combustible Floor Systems
Non-Combustible Floor Systems
13
14
8
7
12
20
Figure 1
6
Figure 2
21
13
9
10
22
24
23
1
14
8
7
12
6
20
1
21
9
10
22
24
23
19
17
18
16
3A
19
3
3
3A
2
MFPST-43 Fireplace Parts List
Optional Outside Ø4”
Combustion Air Kit
Model No.: MFP4-AK
(Ø4” Ducting not included)
MFP43SHBL- Herringbone
MFP43FRBL- Running Bond
MFPST-43 Fireplace Parts List
ITEM P/N DESCRIPTION QTY
1 MFPST-43-1 HEARTH (Left or Right) 2
3 MFPST-43-3 SIDE WALL 5
3A MFPST-43-3A SIDE WALL W/4” KNOCKOUT 1
6 MFPST-43-6 LINTEL 1
7 MFPST-43-7 DOME SIDE - LOWER 2
8 MFPST-43-8 DOME SIDE - UPPER 2
9 MFPST-43-9 DOME TOP FOR 16” CLASS A CHIMNEY 1
10 MFPST-43-10 DOME FRONT/REAR - UPPER 2
12 MFP521 RATING PLATE, MFP33 1
NOT SUPPLIED
13
NOT SUPPLIED
14
16 MFPBST43 * STEEL SUPPORT PLATFORM 8 INCH HIGH 1
NOT SUPPLIED
17
18 MFPSB * ASSY, FLOOR JOIST BRACE 4
19 MF49-11 #3 REBAR (Ø3/8”) x 36” 8
20 MFP-ARC LINTEL TRIM (OPTIONAL) 2
21 MFP116-16 * COLLAR, TENSION STRAP 16” 1
22 MFP117 * TENSION STRAP, UPPER 2
23 MFP118 * TENSION STRAP, LOWER 2
24 MFP119 * TENSION STRAP HARDWARE PACK 1
Ø16” DAMPER / ANCHOR PLATE --INSULATION BLANKET ---
CEMENT BOARD, MFPST43 ---
Refractory Firebrick Liners
(Herringbone Pattern shown, also available
in Running Bond - see Pg.27)
Only the following
doors have been tested
and approved for use
with this fireplace:
Crown-Breckinridge
or
McKenzie-Pendelton
* ITEMS NOTED ARE SOLD SEPARATELY
ITEMS INDICATED AS “NOT SUPPLIED” CAN BE OBTAINED FROM YOUR
LOCAL HARDWARE STORE.
3
MFPST-43 Fireplace Overall Dimensions
Figure 3
Overall Dimensions
28"
Figure 4
IF WOOD FRAMING IS UTILIZED
IT MUST BE HELD 18 INCHES
MIN. FROM TOP OF LINTEL AND
2 INCHES MIN.CLEARANCE
MUST BE MAINTAINED ALL
AROUND FIREPLACE DOME.
Non-Combustible Floor Systems
Ø 16" CHIMNEY
23 3/4"
A
RATING
PLATE
63"
29"
28"
24 1/2"
A
43 1/4"
53"
3"
38 3/4"
SECTION A-A
Fireplace Framing Dimensions
MAINTAIN THE 2” CLEARANCE TO
COMBUSTIBLES ABOVE THE DOME. DO
NOT ATTACH COMBUSTIBLE MATERIALS
ON TOP OF THE DOME.
IF METAL FRAMING IS USED
MAINTAIN A 1/2 INCH MIN. AIR
SPACE FROM TOP OF LINTEL.
2” MIN. CLEARANCE TO
COMBUSTIBLES AROUND SIDES,
REAR AND TOP OF FIREPLACE DOME.
57” I.D.
FRAMING
28” O.D.
n WARNING
Failure to position the parts in accordance with these diagrams or failure to use only parts specifi cally
approved with this appliance may result in property damage or personal injury.
4
Fireplace Framing Dimensions (Combustible Floor Systems)
Fireplace Framing Dimensions (Combustible Floor Systems)
Figure 5 - Combustible Floor
2" MIN**
CLASS “A”
CHIMNEY
8 1/2"
57"
I.D.
FRAMING
2"
MIN*
* 2 INCH CLEARANCE TO COMBUSTIBLES BOTH
SIDES OF FIREPLACE
** If using a raised hearth or metal base plate, note that a
combustible wood header must be no closer than 2” to the top of
the dome top.
Figure 6 - Non-Combustible Hearth Extension (by others*)
2" MIN
2”
ONLY NON-COMBUSTIBLE
MATERIAL WITHIN 18” OF
TOP OF OPENING.
1/2”
SEE FIG. 27
AND 28
SEE FIG. 26
2” AIRSP ACE
CLEARANCE TO
COMBUSTIBLES
FROM REAR
AND SIDES
65"
12"
MIN
20"
MIN
* Not provided as part of fi replace
53"
12"
MIN
30 5/8"
20”
28”
1/2” THICK
CONCRETE
BOARD
8” METAL
PLATFORM
Figure 7 - Combustible Floor
5
Safety Information
WARNING: THIS FIREPLACE HAS NOT BEEN TESTED
FOR USE WITH AN UNVENTED GAS LOG SET. TO
REDUCE THE RISK OF FIRE OR INJURY, DO NOT
INSTALL AN UNVENTED GAS LOG SET INTO FIREPLACE.
WARNING: THIS FIREPLACE HAS BEEN TESTED FOR
USE WITH OPTIONAL GLASS DOORS: CROWNBRECKINRIDGE OR MCKENZIE-PENDELTON ONLY.
WARNING:
Install only approved, listed UL 103-16” I.D. Class A
Chimney System.
Chimney maximum height: 40 feet
Chimney minimum height: 14 feet (with offset = 17 feet)
2 offsets maximum.
Important: Follow the chimney pipe manufacturer’s
instructions on the installation of their specifi c fl ue system.
GUIDELINES FOR USE:
All current and future users of Mason-Lite Fireplaces
are charged with the responsibility for full knowledge of the
information contained within this manual which includes:
Strict requirements for assembly.
Detailed instructions for installation.
Cautionary guidelines for use.
On-going maintenance instructions.
It is the responsibility of the distributor, subcontractor and/or
the general contractor – whoever shoulders the liability for
installation of this product – to see to it that the work is in
complete compliance with the guidelines and instructions
in this manual. Note that the general contractor is the party
accountable for seeing that adequate clearances are provided
from all fi rebox surfaces per specifi cations in this manual.
DO NOT USE A FIREPLACE INSERT OR OTHER
PRODUCTS NOT SPECIFIED FOR USE WITH THIS
FIREPLACE.
The Mason-Lite is Designed for Use Only with:
- Solid Wood Logs
- Plumbed LPG or Natural Gas Log Lighter.
- Plumbed ANSI Z21.60 Decorative Gas Log.
DO NOT USE OR STORE GASOLINE OR OTHER
FLAMMABLE LIQUIDS OR GASES IN OR NEAR THE
FIREPLACE!
ATTENTION: A fi re or an explosion could occur causing
property damage, injury or loss of life if you do not follow the
information in this manual!
NOTE: THIS MANUAL MUST BE REPRODUCED ONLY
IN ITS ENTIRETY.
Before Beginning the Installation
Read these instructions carefully before beginning the
installation of this fi replace. Also, if installing an ANSI Z21.60
Decorative Gas Log, read the gas log appliance manufacturer’s
literature regarding sizing and suitability for the installation into
this Enclosure prior to installation.
Statement of Intended Use:
The Mason-Lite Masonry Fireplace is a modular refractory
masonry unit designed for fi eld assembly. The fi rebox is
constructed using pre-cast, interlocking refractory blocks.
The blocks are then secured to each other using Mortar. The
system includes all parts necessary for the assembly of a
complete masonry fi replace. In addition to the basic enclosure,
a standard 1-1/8” thick, high temperature refractory brick is
required to line the interior of the fi rebox.
These fi replaces are not intended to serve as a primary
heat source, rather, the fi replace was expressly created as a
supplemental source of heat. The unit is designed for use with
solid fuels such as cord wood.
WARNING:
Any application other than the “Intended Use” as stated above
is in violation of the manufacturer’s instructions and is hereby
prohibited. Such violation may cause immediate hazard,
property damage or loss of life and will void all liabilities to the
manufacturer and will void all warranties explicit or implied.
6
Product Overview
Introduction
We extend a warm welcome from all of us at Masonry
Fireplace Industries, LLC. (MFI), proud manufacturers of
Mason-Lite Fireplaces. Thank you for choosing MFI.
You may have thought long and hard before you chose the
fi replace which would grace your home. Rest assured that
every component of the Fireplace has been tested to ensure
long-term durability.
Product Overview
Mason-Lite Fireplaces are designed as factory-built blocks
to be assembled on-site. These fi replaces may be installed
on either combustible or non-combustible fl oors. In order for
the fi replace to be installed on a combustible fl oor though, it
is necessary that the fi replace be supported on a platform or
sub-fl oor that is non-combustible.
Figure 8 - Typical Installations
Internal
Wall
Installation
The Four Components of the Mason-Lite Fireplace:
Combustible or Non-Combustible Floor
•
Non-Combustible Raised Platform
•
MASON-LITE Firebox and Smoke Dome
•
UL103-16” class A listed chimney system required.
•
Important: Follow the chimney pipe manufacturer’s
instructions on the installation of their specifi c fl ue system.
Careful step-by-step instructions for each phase of
the installation procedure will be given for the Mason-Lite
conventional radiant heat fi replaces. Those instructions
generally fall into the following categories:
Spacing and clearance as it relates to combustible
•
materials.
Familiarity of installation for all components.
•
The strength of the fl oor on which it rests.
•
Chimney system measurements.
•
Choice of materials and craftsmanship in fi replace and
•
hearth fi nishing.
•
Island
Installation
Note that each of these topics will be covered in detail and that
the installer is expected to understand each phase completely
before going on to subsequent instructions.
Attention: Be advised that all the illustrations in this manual
are for general reference only. Do not scale drawings. Actual
design elements will vary from case to case. Pay attention to
specifi ed minimum clearances to combustibles.
Testing and listing for the Mason-Lite Fireplace has been undertaken by PFS Inc. (Report No. 08-154) to UL 127.
Attention: You may need a residential building permit to install a Mason-Lite Fireplace. Consult local jurisdictions before
you get started!
If asked, advise the local authorities that the Mason-Lite
Fireplace is designed for installation per the National Fire Protection Association Standard for Chimneys, Fireplaces, Vents
and Solid Fuel-Burning Appliances (NFPA211).
When choosing the location of your Mason-Lite Fireplace,
keep in mind you must maintain 2” (two inches) minimum
clearance from left, right and rear of Fireplace to surrounding
structure. Also, when choosing a 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 sub-fl ooring. See
section on Installing Outside Air on page 17.
7
Clearances to Combustibles
The distance to be maintained from the surfaces of the
fi replace to combustibles must be observed. Below is a list of
the most common combustible materials to name a few:
Drywall Wood fl ooring Plywood
Sub-fl ooring Wood Framing Particle board
Mill board Plywood paneling
Maintain the following clearances:
Unit front, sides, rear: 2” (50 mm)
•
Combustible Floor: 8” (150 mm)
•
Combustible Sheathing above opening top: 8” (200 mm)
•
Sheathing or trim to opening sides: 8” (200 mm)
•
Mantel above opening: (refer to Fig.9)
•
Opening to sidewall: 24” (500 mm)
•
Hearth extension beyond front: 20” (500 mm)
•
Hearth extension beyond sides: 12” (300 mm)
•
Insulation from fi rebox: 2” (50 mm)
•
Figure 9
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 fi replace installation.
The Mason-Lite is designed to be installed with a listed
1)
UL-103-16” I.D. Class A, Metal Chimney System.
This Mason-Lite fi replace is intended as a supplemental
2)
heat source only. It is not intended as a primary heat
source.
It is the responsibility of the contractor installer (not the
3)
manufacturer) to ensure that adequate combustion air is
provided for proper function of this fi replace. 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.
There are many conditions beyond a manufacturer’s
4)
control regarding improper fi replace 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.
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
MFPST-43 Mason-Lite Fireplaces have been designed
with clearance to combustible fl oors at a minimum of 8-1/2”
(eight and one half inches) as provided by the 8” metal base
and 1/2” concrete board. Cover any part of the combustible
fl oor system left exposed with 1” (one inch) thick ceramic fi ber
insulation rated up to 2,100°F.
The Mason-Lite Steel Platform , the 1/2” concrete board
above, the 1” ceramic fi ber blanket or board within the
platform (Fig.15) and the 2” clearance for dome front, and unit
sides provide the temperature safety margin to combustible
materials.
Inspect all fi replace & chimney components for evidence
5)
of damage prior to starting installation. Consult your local
distributor for replacement parts if necessary.
Under no circumstances should you make any adjustments
6)
or modifi cations 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 fi replace. You must follow your
chimney manufacturer’s instructions.
Caution is urged if it is decided to add insulation material
7)
to any part of the Mason-Lite Fireplace or Chimney
system, be certain that the insulation material is kept at
least 2” (two inches) away from any part of the system.
When using insulation or vapor barrier materials, cover
with a layer of plywood, particle board or gypsum board to
maintain the specifi ed 2” (two inch) clearance.
Air spaces around fi rebox must remain open. DO NOT fi ll
8)
these open spaces with insulation or packing material of
any kind.
Chimney System Heights
When installed, the maximum overall height of the chimney
system from bottom of fi replace to the top/termination chimney
is 40 feet. The minimum installed height of the completed
Chimney System is 14 feet with a straight fl ue stack, 17 feet if
the chimney includes one or two offset sections.
8
Supporting Floor Systems
It is the ultimate responsibility of the installer to ensure that
proper concrete slab supports are used.
WARNING to the licensed design professional and/or building
contractor: It is your responsibility to be certain that the
Mason-Lite can be properly supported by the combustible
fl oor system on which the fi replace will rest.
For fi replace support foundations installed on concrete refer to
Appendix I and II (pages 20 & 21 ) for specifi c instructions.
Rebar locations
Lay-out the position of the fi replace and drill holes where
the rebar will be located. Secure eight #3 rebar 4 inches into
concrete foundation with ITW Epoxy or Simpson Epoxy.
Follow manufacturer’s instructions for installation of rebar into
slab.
Wood Floor
Anchorage of fi replace to wood fl oor construction is required.
Refer to Figure 10 for anchorage locations. Four anchors are
required to attach to the sub-fl ooring framing.
Attach the fi rebox side wall anchors to steel support frame
by inserting all-thread rods through holes on the bottom fl
on the steel support frame as shown in Figure 14. Secure with
two Ø 2” o.d. x Ø 9/16” i.d. x 0.10” Washers and two 1/2-13
UNC Nuts.
Figure 10
Metal Base
Assembly
A35 Brackets
(16 required)
ange
2X FLOOR JOIST
EXAMPLE ONLY
Crawl Space or Upper Floor:
For installation of fi rebox over combustible crawl spaces or
upper fl oors, anchorage of the fi rebox is required. Illustrations
of examples of possible anchorage methods are shown in
Figures 10 thru 13 depending upon the type of fl oor framing.
Final method of anchorage to be determined by licensed
design professional.
For conventional framing where the fl oor joists are parallel
with the sides of the fi rebox, the addition of fl oor joists to align
with the anchor brackets allows the brackets to be directly
connected to the fl oor joists.
Note that additional fl oor joists may be required to support
the weight of the fi rebox and chimney. Where the fl oor joists
run parallel to the front of the fi rebox, anchorage can be
accomplished in like manner as shown in Figure 12 using
blocking between the fl oor joist.
For fl oors supported by I-Joists, the method of anchorage
is illustrated in Figures 10 and 11. Figure 12 illustrates the
general arrangement of anchorage to fl oor framing.
It is important to take into consideration that the load for
the Mason-Lite Fireplace must be considered as additional
dead load that will have to be supported by the fl oor framing.
Additional fl oor joists or I-joists may be required as determined
by the licensed design professional.
The weights to be considered are noted in Table I. It is the
task and responsibility of the general contractor/installer to see
that the proper reinforcement for weight loads are made by a
licensed design professional prior to the fi replace installation.
As stated above, it is desirable to place additional framing
for alignment of anchor rods. Refer to Figure 14 for anchor
rod locations.
Floor Sheathing
not shown for
clarity
Figure 11
I-Joist Anchoring
Top View
Simpson
Strong-Tie
A-35 or
equivalent
Figure 12
I-Joist
Anchoring
Bottom
View
2X FLOOR JOIST
Example Only
ist
I-Jo
Anchor
Brackets
I-JOISTS
Example Only
9
MASON-LITE Weight Determination
The following are dead load weight estimates for the
Mason-Lite Fireplace.
Table I
Model: MFPST-43
Fireplace 835 lb..
Damper/Anchor
Plate, Firebrick &
Mortar
Steel Platform 70 lb..
Floor Area
Other Weight Considerations:
Fireplace fi nished facing (surround): This information needs to be obtained from the contractor.
1)
Weight of metal fl ue: See chimney manufacturer’s weight specifi cations. Some chimney systems can weigh up to 50 lb. per
2)
linear foot.
350 lb..
53” x 28”
(10.3 square feet)
Table II - Defl ection Limits
Construction L S or W D +L
1
Floor Members
1
For wood structural members having a moisture content of less than 16 per cent at time of installation and used under dry
conditions, the defl ection resulting from L + 0.5D is permitted to be substituted for the de fl ection resulting from L + D.
Note that MASON-LITE cannot accept responsibility for structural fl oor support details. All drawings are presented as mere
illustrations to indicate the presence of the underlying fl oor system. It is the responsibility of the general contractor/installer to
consult with a local licensed design professional for guidance in building a proper fl oor support system.
Figure 14
I/360 --- I/240
48 3/4"
Figure 15
8"
12"
Floor framing anchor rods see Figure 15 for support of
anchor rods by the steel support frames.
Figure 16
T ypical Anchorage
Layout
2” min
clearance
Fireplace
outline
EXAMPLE ONLY
10
10”
SECTION VIEW
ROTATED 90CW
Combustible Floor Installations
8” Metal Base
The Mason-Lite Metal Base ensures the minimum 8” (eight
inch) clearance above combustible fl ooring is maintained.
A layer of 1/2” minimum Concrete Board is required on
the top and mid section below as shown in Figure 17. The
required sizes are shown in the table below.
1/2” Thick Cement Board Dimensions
Model A1 A2 B1 B2
MFPST-43 53” 28” 48” 23”
Figure 17
Place Cement Board
on top rails of platform.
MFP-33/39/44/49: 6” Metal Base Assembly
What You Will Need
You will fi nd that the MASON-LITE Fireplace is designed
to be completely assembled on-site, consisting of interlocking
precast parts. You will need a thin-set type mortar for
bonding. The parts of the fi replace are made of Mason-Lite’s
incredibly strong blend of specialty cement and a light weight
aggregate.
IMPORTANT! When applying mortar, it is imperative that the
concrete blocks be maintained moist (not soaking) so they
don’t absorb the water out of the mortar and cause adhesion
to fail. Frequently run a damp sponge to the parts before
mortar is applied!
The installation of an anchor plate/damper is required but not
supplied. Y ou may purchase it from any chimney manufacturer
or MFI. Also, an optional combustion air inlet MFP4-AK can be
obtained from MFI.
Refractory Firebrick Liners also need to be installed. These
should be a minimum of 1-1/8” (one and one-eight inches)
thick. The liner will be applied within the walls and hearth area
of the fi rebox.
Place Cement Board on
top of cross-members.
B2
B1
26 ga. galv.
Hearth Ember Shields
Eight (8) All-Thread Rods are secured to the top fl ange
of the Metal Base with sixteen (16) fl at washers (2”OD x
9/16”ID x 0.10”) and sixteen (16) 1/2”-13 UNC Nuts.
Anchor Bracket All-Thread Rods are secured to the bottom fl ange
of the Metal Base with eight (8) fl at washers (2”OD x 9/16”ID x
0.10”) and eight (8) 1/2-13 UNC Nuts.
n IMPORTANT:
Remember to tighten up nuts below the fl oor after fi replace
installation in order to take up any slack in the threads.
A1
A2
Materials needed for concrete slab
(non- combustible) installation
Eight (8) pieces 3/8” rebar x 36” long (included with unit)
•
Eight (8) pieces of rebar x 12” long (included with unit)
•
Epoxy for securing rebar in footing / foundation
•
Three (3) - 90 lb. bags of ready mix concrete with 1/4” or
•
smaller aggregate
Mason-Lite Mortar (one 50 lb. bag)
•
Materials needed for combustible
wood floor installation:
Eight (8) pieces 3/8” rebar x 36” long (included with unit)
•
Eight (8) 12” long, 1/2-13 UNC All-Thread with (24) nuts
•
and washers
8 inch Metal Base.
•
1” ceramic fi ber blanket the size of the hearth base to go
•
under the metal base.
½” cement boards.
•
Four or more fasteners to attach metal base to fl oor joists
•
Mason-Lite Mortar (at least one 50 lb. bag)
•
Three (3) - 90 lb. bags of ready mix concrete with 1/4” or
•
smaller aggregate.
Hearth Ember Shield:
Metal safety stripping is required between the front of the
Fireplace Hearth and Hearth Extension (not supplied). A 26
gauge galvanized 4” wide metal strip can be used. The length
needs to extend 2 inches beyond each side of the fi replace
opening. If two strips are used, make sure they overlap at
least two inches in the middle. The strip is placed about 2” into
the underside of the platform at the front of both openings on
the fi replace.
Note: When using an on-site-constructed hearth extension,
you may use a sand-cement grout between the hearth and
extension instead.
11
Tools needed for both above installations:
One 4’ level
•
Roto-hammer with ½” drill bit (needed for concrete slab
•
install only)
Drill motor with mixer blade (to mix Mason-Lite Mortar)
•
Two empty 5 gallon buckets (to mix Mason-Lite Mortar)
•
One wheelbarrow and shovel to mix concrete.
•
Grout bag
•
Triangular masonry trowel
•
Rubber hammer
•
Sponge and water bucket to wipe down and moisten parts
•
prior to applying mortar.
Field Assembly Procedures
Mixing the MASON-LITE mortar – The mortar comes
a)
premixed and should be dry . Be sure to use clean water and
work it up into a mixture that is pasty but not lumpy . If it’s too
thin and the surfaces don’t stay moist, the components will
not adhere. Load the mixture into a standard grout bag.
Apply about ½” (one-half inch) thread of mortar. The mortar
b)
bead should be approximately ½” (one-half inch) away from
all edges. The mortar has a considerable amount of holding
power so do not overload the components with too much
mortar. Keep the components moist at all times!
Some mortar will “ooze out” when placing components
c)
together, this is normal. Wipe excess away with a trowel. Do
not cover component surfaces completely with mortar. Do
not apply the mortar in thick bands even if the component
you are working with is larger than the rest. You will want to
apply “stripes” of mortar in these situations.
Make sure components are level. It’s extremely important
d)
that you pay careful attention to how you are assembling
the Mason-Lite Fireplace since every component builds on
the next. If you have to make any kind of an adjustment,
do not try to do it “by loading an opening” with mortar, this
will only result in a fi replace that will not be plumb or level.
Use wood shims instead. You will fi nd these small wood
shims supplied with the Mason-Lite Fireplace and
you can nudge them in between openings to achieve the
precision you need in making component adjustments.
Once you have inserted any shims, you will want to
cover any gaps that may have resulted with the mortar.
MFPST-43 Fireplace Assembly
1) Place the Mason-Lite Fireplace hearth base on top of your
non-combustible fl oor or metal base. For concrete slabs,
supporting fl oor needs to be rated at ASTM 90.
a) Combustible Floor Installations:
2)
Mix up a batch of mortar and place hearth slabs on
top of cement board which sits on top of the Raised
Metal Platform (see Figure 15). All-thread rods should
stick up through the holes on the hearth slabs.
b) Non-combustible Floor Installations:
Draw an outline of the hearth area based on the
dimensions shown in Figure 18. Position Hearth slabs
and mark rebar center locations (see Pg. 10, Fig.14).
Drill 4 inches into concrete slab and secure the four
pieces of rebar with epoxy.
Figure 18
Apply mortar
between joints
28”
LH Hearth 2nd
RH Hearth 1st
Four 26ga.galv. 4” wide
Hearth Ember Shields
required (not supplied)
Keep the assembly of the next sections of the fi rebox
4)
side walls moving up, keeping components moist, mixing
mortar as you need it and threading the mortar
appropriately as you stack each section, one onto the
next. Constantly check for squareness and levelness
while building each course of block. As you complete
each section, make certain that you adhere the mortar at
each and every joint.
Figure 19
Setting Firebox Sides
After the last side walls are in place, add #3 rebar rods
5)
and fi ll the fi rebox cells with mortar mix. Mix approx. 2 cu.
ft. of sanded mortar mix. Put 25% in cells and place #3
rebar vertically into holes on the hearth base. If a raised
metal platform was installed, place adjacent to all-thread
rods sticking through the cells. Make sure the bars are
into the hearth and at least 1/2” (one-half inch) below top
of fi rebox top surface. Finish fi lling cells.
53”
2” min
overlap typ.
Before installing the side walls, confi rm placement of
3)
outside combustion air side block (if required), this can
be installed either side depending on which side is
accessible to outside combustion air. Prepare side wall
footprint with the prepared mortar.
Figure 20
Keep damp at all
times while applying
mortar.
Lower Tension
Strap.
IMPORTANT! Keep in mind that, when applying the
mortar, you must frequently run a damp sponge to the
parts before mortar is applied!
12
6)
Set the lintel in place as shown in Figure 21. Check that
all is level. If you need to make adjustments, use shims.
Place one or more of these shims between the lowest
wall component and the top surface of the base plate.
Once you are satisfi ed with the degree of levelness, you
can address any gap that may have occurred with an
appropriate amount of mortar.
parts have a slight bevel. Check for vertical with level
(Figure 24).
Figure 24
Upper Dome
Sides
Figure 21
Lower Dome
Assembly
Note: Although you are cautioned to use MASON-LITE
mortar sparingly because it does have such holding
power, you should look over the fi rebox assembly at the
end and fi ll in any gaps, especially joint connections, with
the mortar. Needless to say, you must make adjustments
to be sure the fi replace is level and square while the
mortar is still wet.
Set the remaining lintel as shown in Figure 22.
7)
Figure 22
Lower Dome
Side
Upper Dome
Front/Rear
As you are connecting each MASON-LITE component,
10)
be certain you are following the instructions given
previously for using MASON-LITE mortar. Stop to look at
the smoke dome side, front and rear walls to see that
they are aligning correctly and that the surfaces be
smooth and uniform. Make sure connections are covered
with an adequate amount of mortar. Remember that you
have the option of using shims and covering them with
mortar if you need to. Make any adjustments to the
fi replace alignment before continuing to the next step.
Figure 25
Completed
Firebox
Lintel
Now you are ready to start the smoke dome assembly.
8)
Take the lower side dome positioned so that the beveled
face lines up with the inward angles of the lintel sides
(see Figure 23). Top surfaces should be level.
Figure 23
Top surfaces
to be level.
Check your assembly here. If things are proceeding as
11)
they should be, the fi nished top surface should be fl at
and level.
Now you can set the smoke dome top plate into position.
12)
Be sure that it is fl ush in every direction as you place it
on the crest of the smoke dome wall assembly.
Seal Anchor Plate using a 1” thick ceramic fi ber blanket.
13)
Complete the Anchor Plate assembly by securing with (4)
1/4-inch masonry anchors as shown in Figure 26.
Now position the front/rear smoke dome parts on top of
9)
dome. These parts require care in leveling, noting the
13
Figure 26a
Now that you have completed the smoke dome
14)
Chimney Anchor Plate Installation
Place 1” Ceramic Fiber
Blanket under Anchor
Plate and secure with
four 1/4-inch masonry
anchors.
assembly, all the components should stack up for a
smooth transition into the fl ue components. Setting the
smoke dome completes the MASON-LITE Firebox and
Smoke Dome assembly. You are now ready to begin the
installation of the necessary fi rebrick lining and the fl ue
components.
Figure 26b
Firestop Radiation Shield
A Firestop Radiation Shield is required in multistory installations
at each fl oor penetration above that where the Support Box is
located.
Figure 27
Firestop Radiation Shields also provide complete separation
from one fl oor space to another or attic space as required
by most codes. When the double wall pipe passes through
a framed opening into an attic space, the fi restop must be
placed into an attic fl oor as shown in Figure 28.
Firestop Spacer with Living
Space Above Ceiling
Existing
Ceiling
Frame
Firestop
Spacer
eight
#8 x 3/4
Screws
WARNING: DO NOT PACK REQUIRED AIR SPACES WITH
INSULATION OR OTHER MATERIALS.
Figure 28
Firestop Spacer with Attic
Space Above Ceiling
eight
#8 x 3/4
Screws
Firestop
Spacer
Existing
Ceiling
Frame
Follow your chimney manufacturer’s instructions on specifi c
guidelines pertaining to their chimney and Firestop Radiation
Shield installation instructions.
14
Mason-Lite Firebrick Liners
Custom Firebrick Lining
Custom Firebrick lining is not supplied by Masonry Fireplace
Industries (MFI). There is, however, the option of modular
pre-fabricated panels that can be obtained from MFI. See
exploded parts page for details.
If custom fi rebrick lining is desired, 1-1/8” inch thick liners will
be required. The pattern for the fi rebrick lining is exclusively
your choice. Before you install the lining, remember to consider
any holes your contractor may need to drill for gas, electrical
or combustion air kit access holes.
Please use a certifi ed mason to lay-in the brick. He will follow
the proper instructions from the fi replace liner manufacturer
and also understand the type of adhesive or cement he is to
use.
Make sure the fi replace is installed with the fi nished fi rebrick
fl oor of the fi replace so that it is at least 11” (eleven inches)
above the combustible fl oor system.
Figure 30
Sectioned Side View
If Optional Arches
are used, corner
notching will be
required on all
four places.
Figure 29
FINISHED
FIREBRICK
HEARTH
LINER
11 INCHES
MINIMUM TO
COMBUSTIBLE
FLOOR
Finished Height to Combustible Floor
Disclaimer: Masonry Fireplace Industries wishes to express
that as the manufacturer of Mason-Lite Fireplaces, they cannot
take any liability or responsibility for they way the firebrick or
the firebrick mortar performs. It is not unusual in the course of
the life of the firebrick, or the firebrick mortar, for heat stress
cracks to appear. MFI cannot be responsible for this and other
wear and tear to the firebrick and mortar.
The following Firebrick Liners are available from MFI:
MFPST43SHBL- Herringbone
Figure 31
Herringbone Brick Pattern
MFPST43FRBL- Running Bond
Modular Firebrick Lining
If using our Mason-Lite Firebr ick Liners, simply use an extra
bucket of the mortar we supply. Install Hearth Liner fi rst, then
continue with sides. Consider if brackets for grates will be
required also if pre-drilling is required for gaslines, electrical or
if the outside combustion air kit is to be installed. If the optional
Arch is used, the top cor ners of the fi rebrick side liners will
need to be notched (see Figure 30).
15
Figure 32
Running Bond Brick Pattern
Fireplace Finishes & Combustible Trim
Clearances
Hearth Material & Dimensions – Codes are strict regarding the
use of proper materials for hearth extensions and the proper
dimensional characteristics.
All hearth extensions must be made of code-rated,
noncombustible materials such as tile, brick, concrete or
stone. MASON-LITE Fireplaces usually have an opening of
approximately 8 sq. ft. (eight square feet) that translates to a
hearth extension of about 20” (twenty inches) at the fi replace’s
opening and about 12” (twelve inches) extension at each side.
These relative dimensions are also covered by code. Note
that it is required that metal safety strips must be laid on the
fl oor of the non-combustible raised platform. These should be
26 gauge and measure 4” (four inches) wide. They need to
extend half way under the platform and half way under the
hearth extension material (see Figure 18).
Attention: You will note that there will be a gap between the
fi replace front and the extension of the non-combustible hearth
material. Be certain that you seal this with non-combustible
material.
Mantle and Mantle Shelf Clearances
As with any radiant heat fi replace, all MASON-LITE Fireplaces
must comply with building code safety clearances, for units
that have openings of 6 sq. ft. (six square feet) or greater.
For Mantel clearances see Figure 9.
Walls that Adjoin – your fi replace cannot be installed closer
than 2 ft. (two feet) to any adjoining walls in the room where
the fi replace is.
Caution in Regards to Combustibles – If any part of the
fi replace or objects in the room (curtains, rugs, paint, cushions,
etc.) start to show warping or discoloration due to heat from
the fi replace, it is time to take immediate action. Do not use
the fi replace until you have fi gured out how to address the
problem. You are facing a potential fi re hazard. MFI cannot be
responsible for the make-up of material on the exterior of the
fi replace 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 airfl ow or the
modifi cations to the room itself.
Installing Outside Combustion (make-up) Air
1) The Mason-Lite Fireplace needs enough make-up air to
function properly and some local building codes may require
outside combustion air to be provided. If no make-up air is
provided, improper fl ue 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 specifi c requirements.
2) Install Combustion Air Kit MFP4-AK into the MASON-LITE
Firebox through the side wall opening provided. The tubing
that goes out of the fi rebox wall must feed into a fl exible
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.
3) 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.
4) Install a screened termination cap to keep out 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.
1) You can route the gas piping practically anywhere in the
fi rebox – the fl oor, back wall or side walls. You will just need
a masonry drill; the instructions from the gas appliance
manufacturer will be very straightforward.
2) Fill in the holes you have drilled around the gas piping with
the regular MASON-LITE mortar.
3) Follow the Gas Log manufacturer’s instructions.
Adding Electrical Connection
Like the gas line, electrical feed lines can be run through
the fl oor, back wall, or side walls. Follow local building and
electrical code requirements.
16
MASON-LITE Chimney Systems:
The Mason-Lite Fireplace requires the following chimney
systems:
All chimney systems must be installed with an integrated
damper/base plate installed on top of unit. Installers are
cautioned to put the chimney system together exactly as
instructed and shown in chimney manufacturer’s guide. Any
variations may have serious consequences resulting in an
accident or malfunction. If instructions are not followed, the
warranty on the product will become null and void.
Note that the most important aspect of the installation is
maintaining the minimum required clearances to combustible
materials according to the chimney pipe manufacturer’s
recommendations, otherwise a potential fi re hazard may
occur.
Figure 33
Elbow
Return
Elbow
Elbow
6' Max.
6' Max.
Return
Elbow
Elbow
A
Elbow
Return
Elbow
6' Max.
Ceiling
B
Support Pipe
12S-12DM
Return
Elbow
6' Max.
Return
Elbow
6' Max.
Warning: do not interchange chimney manufacturer’s parts
with any other parts except those specifi cally required by
the chimney manufacturer’s recommendations otherwise a
potential hazardous condition may be created.
Attention: When choosing a Chimney System it must meet the
following requirements:
•
Designed for installation in accordance with the National
Fire Protection Standard and UL 103.
•
Meets the requirements of NFPA 211.
•
Designed in accordance with ICC Codes.
Assuming you have sections of vertical pipe that are more than
10’ (ten feet) measuring between elbows, you must insert – at
midpoint – a chimney stabilizer. When installing the stabilizer,
pull out the support straps with a good amount of tension and
hammer to the frame.
Installing Damper and Chimney System
The Damper System/Anchor Plate assembly is required
for the installation of these chimney systems. Consult the
Chimney System manufacturer’s instructions.
Using the Damper/Anchor Plate Assembly, apply a 1/4”
1.
(one-quarter inch) bead of gasket cement around the
base of the Anchor Plate. Apply ceramic blanket gasket to
the gasket cement.
Apply balance of gasket cement in a 1/4” (one-quarter
2.
inch) bead on top of smoke dome top approx. 3” (3 inches)
outside of outlet hole. Install damper on top of unit pressing
damper into cement.
Place chimney adapter onto top of damper plate and
3.
center in opening using gasket supplied with adapter.
Attach adapter with (12) #8 cement fasteners supplied,
4.
carefully drilling holes into damper plate.
Attach damper chain stop on center rear of lintel 3”
5.
(three inch) vertical from opening using (3) #8 cement
fasteners.
Mason-Lite Fireplace
MFPST43
Elbow
Chimney System
UL103-16” I.D. Class A
6' Max.
C
Attention: Clearance to combustible construction cannot be
reduced during course of construction. For the safe operation
of the fi nished fi replace, these clearances must be followed
when building the framework for the chimney system.
Finishing Your Installation
T o complete your fi replace installation, a fi replace grate will
be required for safe operation. The fi replace grate must be
sized to 50% of the hearth maximum. Additionally, a fi replace
screen must be installed for safety.
Fireplace Door Accessory
IMPORTANT: Only Crown-Breckinridge or McKenziePendelton Doors are approved for use with this fi replace.
For installation Instructions, see separate instructions included
with doors.
17
Mason-Lite Owner’s Operation & Precautions
Starting a Fire and Basic Operation
Installers of the Mason-Lite are urged to leave the owner’s
manual with the unit after installation is complete.
WARNING: Do not attempt to operate your fi replace without
a fi re safety screen installed.
CAUTION: The manufacturer cautions against using chemical
chimney cleaners. Never use charcoal or coal in the fi replace
under any circumstances.
First Lighting of the Mason-Lite – After construction is
1)
completed, all elements of the fi replace and chimney
system must be completely dry. This means that the unit
must stand without any fi ring for a minimum of 28 days.
Only after that period of time can a fi rst lighting take place.
The fi rst fi re must be small and well-controlled, started
with a small amount of kindling. Add no more than eight
pounds of wood, preferably small logs not more than 3”
(three inches) in diameter. You will probably burn no more
than three to four of these small logs. Do not let the fi re
burn for more than one hour. After this fi rst lighting – when
the fi replace has started to “cure” Do not set another fi re
for at least 24 hours.
Second Lighting – Start the fi re slowly and gradually as
2)
you did with the fi rst lighting, but this time you can burn up
to ten pounds of fi rewood, probably four to fi ve logs that
are 3” (three inches) in diameter. With the second lighting
you can let the fi re burn two hours – no more.
Before starting a fi re in your fi replace, open the damper to
its’ fully open position. Crumple some paper and place it on
the log grate. Use some soft, dry wood as kindling and put it
on top of the paper. Place some small logs or split logs atop
the paper and kindling.
Finish off the fuel load with a couple of hardwood logs or
split logs – oak or hickory. Check to see that you’re stacking
the logs so that they will fall inside the grate as they burn.
To get the most out of your wood, it is recommended
that you let it set and completely dry out for nine months to a
year.
When you are satisfi ed with the arrangement of your wood
load, light the paper which in turn will ignite the kindling, then
the softer wood and fi nally, the harder wood logs. As the fi re
burns, you can carefully lay additional logs on the fl ame, but
make sure you place them gently without forcing them into the
opening.
After First and Second Lightings – When the fi replace
3)
has been properly cured with 1st and 2nd lightings, you
will be able to add a full fuel load to the MASON-LITE
which is about 10 to 15 pounds of fi rewood at any given
time. Consider that this typical fuel load is three to four dry
hardwood logs that are about 6” (six inches) to 8” (eight
inches) in diameter.
Without a grate for your fi rewood to rest on, you cannot
4)
get the air fl ow you need under the fi re which makes for a
hotter, more satisfying fi re.
Don’t “over burn” – Always remember, your Mason-
5)
Lite Fireplace is an elegant addition to your home.
It is not an indoor incinerator! If you start to use the
fi replace and begin a routine of “over burning,” you
can permanently and unalterably damage the unit.
Under no circumstances should you be burning
household trash, including chemicals and combustibles,
cardboard boxes, your offi ce papers, scrap lumber
or stray branches from your yard, particularly pine.
WARNING: Burning of above mentioned materials will
cause an unsafe condition and will void your warranty!
18
ANNUAL FIREPLACE MAINTENANCE
Your fi replace and chimney require seasonal and
monthly tune-ups”. Like any piece of well-built equipment,
the Mason-Lite Fireplace and chimney needs routine
maintenance.
The manufacturer recommends that inspection of the
fi replace and chimney take place on a monthly basis during the
heating season.
Start at the top, looking for birds’ nests, leaves or any
other obstructions. Also check the spark arrestor, for creosote
or soot build-up. T wice a year, you will want to clean the fi rebox
and chimney yourself or hire a professional chimney sweep to
do the job for you. If you elect to do it yourself, use a plastic,
wood or steel brush for the inside of the chimney.
For the spark arrestor, scrub with a wire brush. To
dismantle the chimney cap for cleaning of the fl ue, unscrew
the four screws that hold it in place. For cleaning access from
below, open the damper in the fi rebox. It is best to use a fl exible
handle chimney cleaning brush made especially for the job.
If your fi replace system has any offset chimney
sections, start cleaning with the fl exible brush from the top of
the section downward to the elbow. Then clean from the fi rebox
up to the offset/return section.
Be sure that you have covered the fl oor of the fi replace
and out to the hearth with a damp sheet that has been taped
securely in place. When all the soot has settled, remove the
sheet and vacuum up – don’t sweep the excess soot.
Good old-fashioned “elbow grease” is enough to
remove the extraneous matter from the inside of the fi rebox
and chimney . Never use any chemical cleaners as their residue
could introduce a fi re hazard after the task is completed.
SURFACE CRACKS
The MASON-LITE FIREPLACES are manufactured
using high quality materials. During the drying process, surface
cracking may occur. These small cracks (under 1/16” will not
effect the fi replace safety or performance). During the assembly
process, fi ll surface cracks with thin-set mortar and brush when
drying for a smooth surface fi nish.
Removal of Creosote and Soot Formation – Creosote
vapors are known to form in the relatively cool chimney fl ues of
slow burning fi res, hence, creosote residue collects on the fl ue
lining. Because of soot and creosote build-up, it is recommended
that the fi replace and chimney cleaning be done twice a year. In
colder climates, cleaning should be done more often.
Always allow the fi replace to completely cool before
you work on it, which means, of course, shutting off all gas and
electrical connections, also.
Be certain that you use only solid fuel in your fi replace.
Y ou may use a natural or LP gas log lighter as a method to start
your wood fi re.
The fl ue damper must be in the OPEN position
whenever there is heat in the fi replace.
CUSTOMER SERVICE & PARTS REPLACEMENT:
Parts and accessories may be purchased from your
local dealer. Additional information is available from Masonry
Fireplace Industries,.LLC.
Accessory orders will be accepted by mail, or you may
call your order in Monday through Friday from 8:00 a.m. to 5:00
p.m. (Pacifi c Standard Time) at: (800)-345-7078.
Outside Inspection – During your once a month
inspection of the fi rebox and chimney, make it a point to also
check the outside of the chimney , the metal fl ashing and weather
seals that surround it. If you fi nd any cracks or openings around
screws or nails, seal them to avoid any roof or chimney chase
leaks.
19
)
c
(f’
a
used to
c
c
d
d,e,f
3,000
3,500
b
, shall be as
c
f’
d
d,e,f
Weathering Potential
2,500 3,000
Negligible Moderate Severe
MINIMUM SPECIFIED COMPRESSIVE STRENGTH
support foundation for the fireplace installed on concrete shall
Appendix I
TABLE R402.2 MINIMUM SPECIFIED COMPRESSIVE STRENGTH OF CONCRETE
produce concrete and testing thereof shall comply with the applicable standards listed in Chapter 3 of ACI 318.
For installations regulated by the International Building Code (IBC), the support foundation for the fireplace installed on concrete
consist of a minimum of 6 inches thick reinforced concrete slab. The minimum specified compressive strength of
required in Table R402.2 of the International Residential Code (IRC). Concrete subject to moderate or severe weathering as indicated
For installations regulated by the International Residential Code, the
in Figure R301.2(3) of the International Residential Code (IRC) shall be air entrained as specified in Table R402.2 of the International
shall not exceed the percentages of the total weight of cementitious materials specified in Section 4.2.3 of ACI 318. Materials
Residential Code (IRC). The maximum weight of fly ash, other pozzolans, silica fume, slag or blended cements that is included in
concrete mixtures for garage floor slabs and for exterior porches, carport slabs and steps that will be exposed to deicing chemicals
1903, 1904 and 1905 of the International Building Code (IBC).
shall consist of a minimum of 6 inches thick reinforced concrete slab. The concrete strength and durability shall comply with Sections
Basement walls, foundations and other concrete not exposed to the weather 2,500 2,500 2,500
Basement slabs and interior slabs on grade, except garage floor slabs 2,500 2,500 2,500
work exposed to the weather
Basement walls, foundation walls, exterior walls and other vertical concrete
Porches, carport slabs and steps exposed to the weather, and garage floor slabs 2,500 3,000
20
TYPE OR LOCATION OF CONCRETE CONSTRUCTION
accordance with Footnote d.
7 percent.
c. Concrete in these locations that may be subject to freezing and thawing during construction shall be air-entrained concrete in
a. Strength at 28 days psi.
b. See Figure R301.2(3) for weathering potential.
d. Concrete shall be air-entrained. Total air content (percent by volume of concrete) shall be not less than 5 percent or more than
3 percent is permitted if the specified compressive strength of the concrete is increased to not less than 4,000 psi.
e. See Section R402.2 for maximum cementitious materials content.
f. For garage floors with a steel troweled finish, reduction of the total air content (percent by volume of concrete) to not less than
Appendix II
FIGURE R301.2(3) WEATHERING PROBABILITY MAP FOR CONCRETE
21
a. Alaska and Hawaii are classified as severe and negligible, respectively.
severe classification is where weather conditions result in significant snowfall combined with extended periods during which there is
b. Lines defining areas are approximate only. Local conditions may be more or less severe than indicated by region classification. A
little or no natural thawing causing deicing salts to be used extensively.
Limited Warranty
Mason-Lite™ Fireplace
Masonry Fireplaces Industries, LLC (MFI) warrants all MASON-LITE Fireplaces to be free from defects in materials that
adversely affect fi replace performance for a period of ten (10) years from the date of purchase, subject to the terms and
conditions of this limited warranty. MFI does not warrant accessory chimney, outside air ducts, gas control or burner
system, ceramic logs, and devices not manufactured by MFI. V alves and electronic parts are only covered for one year
parts and labor per the log set manufacturer’s warranty.
This warranty covers only products manufactured by MFI, specifi cally the modular concrete fi rebox, and NO WARRANTY ,
EXPRESS OR IMPLIED, EXTENDS TO ANY OF THE HARDWARE, FOUNDATION, VENTING, DUCTS, OR
ACCESSORIES. THIS WARRANTY DOES NOT COVER DRAFTING, SMOKING, OR SOOTING OF THE FIREPLACE
SYSTEM. Factors beyond the manufacturer’s control may affect drafting, smoking, and sooting, MFI cannot guarantee
these aspects of performance.
If a component is found to be defective under the terms of this warranty, the party this warranty is extended to shall
notify MFI, 315 W. 3rd Street, Santa Ana, CA 92701 in writing, by registered mail, within thirty (30) days following the
discovery of the defect within the warranty period. The letter shall contain (1) the date of purchase; (2) place of purchase;
(3) address of installation; (4) name, address and phone number of the homeowner; and (5) a brief description of the
defect.
MFI, or any entity thereof, is not responsible for any labor costs or indirect costs incurred for the replacement of
defective components.
MFI is not responsible for misuse or mishandling of component parts. Nothing in this warranty makes MFI, or any
entity thereof, liable in any respect for any injury or damage to the building or structure in which the fi replace has been
installed or to the persons or property therein arising out of the use, misuse, or installation of properly manufactured
MFI product.
MFI, OR ANY ENTITY THEREOF, SHALL NOT BE HELD LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL
DAMAGES OR EXPENSES ARISING OUT OF THE USE OF THE FIREPLACE. ALL SUCH DAMAGES AND EXPENSES
ARE HEREBY EXCLUDED.
This warranty is null and void when the fi replaces are not installed pursuant to the installation instructions provided by
MFI and local building codes have not been followed completely.
This warranty applies only to those fi replaces installed in the continental United States, Hawaii, Alaska and Canada. If
any part of this warranty is found to be unenforceable,, the remaining parts shall remain in force and effect.
MFI HEREBY DISCLAIMS ALL GUARANTEES AND WARRANTIES, EXPRESS OR IMPLIED, BEYOND THE
WARRANTIES SET FORTH HEREIN.
CUSTOMER SERVICE & PARTS REPLACEMENT:
Parts and accessories may be purchased from your local dealer. Additional information is available from Masonry
Fireplace Industries, L.L.C. Accessory orders will be accepted by mail, or you may call to order Monday through Friday
from 1:00 p.m. to 5:00 p.m. (Pacifi c Standard Time) at: (800) 345-7078.
Please complete the following information for future reference and warranty verifi cation:
Date of Purchase ____________________20____
Model # ________________
Serial # ________________
Masonry Fireplace Industries, LLC
315 West 3rd Street Santa Ana, CA. 92701
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