Mason-Lite Masonry Firebox, MFP-39, MFP-44, MFP-49, MFP-63 User Manual

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Masonry Firebox

Models MFP-33/39/44/49/63

Instructions

THIS WOOD-BURNING FIREPLACE COMPLIES WITH UL127 STANDARD AS A FACTORY-BUILT APPLIANCE.

▲! WARNING: THIS FIREPLACE IS APPROVED FOR USE AS A WOOD BURNING FIREPLACE.

IT HAS NOT BEEN TESTED OR APPROVED FOR UNVENTED GAS LOGS.

▲! WARNING: 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.

IMPORTANT: DO NOT BURN WITHOUT FIREBRICK LINING. FIREBRICK NEEDS TO BE RATED ASTM-C1261. PROVIDE CLEARANCE FOR HEAT EXPANSION WITHIN HEARTH AREA.

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.

PFS

Do not store gasoline or other ammable vapors and

liquids in the vicinity of this or any other appliance.

REV OCT 2016

USC

Report No. 08-154

ICC Evaluation Services Report No. 2401

THIS PAGE INTENTIONALLY BLANK

CONTENTS

MFP350_rev C_JUN2015

MFI

6.5”

6.25”

MFP-33 Fireplace Parts Diagrams ....................................................................................................................... Pg. 2, 3

MFP-39/44/49 Fireplace Parts Diagrams ............................................................................................................. Pg. 4, 5

MFP-63 Fireplace Parts Diagrams ....................................................................................................................... Pg. 6, 7

Fireplace Overall Dimensions: MFP-33 and MFP-63 .......................................................................................... Pg. 8

Fireplace Overall Dimensions: MFP-39/44/49 ..................................................................................................... Pg. 9

Fireplace Framing Dimensions ............................................................................................................................ Pg. 10 ~ 12

Safety Information ................................................................................................................................................ Pg. 13

Product Overview ................................................................................................................................................. Pg. 14

Clearances to Combustibles ................................................................................................................................ Pg. 15

Combustible Floor Clearances ............................................................................................................................. Pg. 15

Mason-Lite Fireplace & Chimney System ............................................................................................................ Pg. 15

Chimney System Heights ..................................................................................................................................... P.g 15

Supporting Floor Systems .................................................................................................................................... Pg. 16, 17

Combustible Floor Installations ............................................................................................................................ Pg. 18

What You Will Need ............................................................................................................................................. Pg. 19

Fireplace Assemblies ........................................................................................................................................... Pg. 20~25

Installing Damper and Chimney System .............................................................................................................. Pg. 26

Firestop Radiation Shield ..................................................................................................................................... Pg. 27

Mason-Lite Firebrick Liners .................................................................................................................................. Pg. 27, 28

Fireplace Finishes and Combustible Trim Clearances ......................................................................................... Pg. 28

Installing Outside Air ............................................................................................................................................ Pg. 28, 29

Chimney Pipe ....................................................................................................................................................... Pg. 29

Adding a Gas Pipe ............................................................................................................................................... Pg. 30

Adding Electrical Connection ............................................................................................................................... Pg. 30

Fireplace Grates and Screens ............................................................................................................................. Pg. 30

Mason-Lite Owner’s Operation & Precautions ..................................................................................................... Pg. 30

Starting A Fire and Basic Operation ..................................................................................................................... Pg. 31

Annual Fireplace Maintenance ............................................................................................................................ Pg. 31

Customer Service & Parts Replacement ............................................................................................................. Pg. 31

Appendix I ............................................................................................................................................................ Pg. 32

Appendix II ........................................................................................................................................................... Pg. 33

Limited Warranty .................................................................................................................................................. Pg. 34

Below is a sample picture of the rating plate that is located inside the lower dome side of your replace. Model Number, Date Of

Manufacture and Serial Number should be stamped on the plate where indicated.

Masonry Fireplace

6391 Jurupa Ave. Riverside, CA 92514

LARR No. 25924

MODEL

No.:

WARNING

HAS BEEN TESTED FOR USE ONLY WITH APPROVED GLASS DOORS. TO REDUCE THE RISK OF FIRE OR INJURY, CONSULT OWNER’S MANUAL.

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.

LISTED MASONRY FIREPLACE SYSTEM COMPLIES WITH APPLICABLE REQUIREMENTS OF UL127 AND ULC610.

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 FIREPLACE.

Industries, LLC

THIS FIREPLACE

THIS APPLIANCE NEEDS FRESH AIR FOR SAFE OPERATION AND MUST BE INSTALLED SO THERE ARE PROVISIONS FOR ADEQUATE COMBUSTION AND VENTILATION AIR.

THIS FIREPLACE HAS NOT BEEN TESTED WITH AN UNVENTED GAS LOG SET.

See MFI’s installation and operating instructions for this model. Contact local building officials about restrictions and installation specifications in your area.

DO NOT REMOVE THIS LABEL

DATE OF MFG.

SERIAL No.

MFP39MFP33 MFP44 MFP49

WARNING:

listed Chimney Pipe as follows: MFP33/39/44: UL103-12”-Class A

(DM12-12”, FMI 12” chimneys).

MFP49: UL103-14”-Class A MFP63: UL103-16”-Class A

Please refer to pipe manufacturer’s installation instructions.

Chimney Height:

Max.: 40 ft. Min.: 14 ft.

sections maximum)

Use only approved,

(17 ft. with 1 or 2 offset

FIREPLACE CLEARANCES TO COMBUSTIBLES:

UNIT FRONT, SIDES, REAR..............................................2” (51 mm)

COMBUSTIBLE FLOOR (MFP33/39/44/49)................6” (203 mm)

COMBUSTIBLE FLOOR (MFP63)...............................8” (203 mm)

COMBUSTIBLE SHEATHING ABOVE OPENING TOP...18” (457 mm)

SHEATHING OR TRIM TO OPENING SIDES...................8” (203 mm)

MANTLE ABOVE OPENING...........................................12” (305 mm)

OPENING TO SIDE WALL..............................................24” (610 mm)

HEARTH EXTENSION BEYOND FRONT.......................20” (508 mm)

HEARTH EXTENSION BEYOND SIDES........................12” (305 mm)

INSULATION FROM FIREBOX.........................................2” (51 mm)

MANTEL CLEARANCES

0” - 3” : 1-1/2” MAX. PROJ. 3“ - 12” : 1-1/2“ - 8” MAX. PROJ.

Tested &

PFS

Listed By

MANTEL ABOVE OPENING:

MIN. - 3” SHEATHING OR TRIM TO OPENING SIDES 8”

Report No. 08-154

USC

ICC Evaluation Services Report No. 2401

MFP63

MFP-33 Fireplace Parts Diagrams

Combustible Floor Systems

Figure 1

Non-Combustible Floor Systems

Figure 2

See Page 16 thru 18 for combustible oor

and framing anchoring illustrations.

DETAIL A

SCALE 1 : 8

MFP-33 Fireplace Parts List

ITEM P/N DESCRIPTION QTY

1 MFP33-1 HEARTH BTM 2

2 MFP33-2

3 MFP49-3 SIDE WALL 5

4 MFP49-3A SIDE WALL W/Ø4 1

5 MFP33-4 DOWNDRAFT DIVERTER 1

6 MFP33-5 LOWER DOME 1

7 MFP33-6 LINTEL 1

8 MFP33-6A LINTEL, FRONT 1

9 MFP33-6B T-BAR, STEEL 1

10 MFP49-7 DOME, SIDE - LOWER 2

11 MFP49-8 DOME, SIDE, UPPER 2

12 MFP33-9 DOME TOP 1

13 MFP33-10 DOME, FRONT-REAR 2

14 MFP521 RATING PLATE 1

15 NOT SUPPLIED ² 12 INCH DAMPER/ANCHOR PLATE 1

16 NOT SUPPLIED ² ANCHOR PLATE INSULATION 1

17 MFP4-AK ¹ OUTSIDE AIR KIT, 4" DIA 1

18 MFPB33 ¹ METAL BASE 6 INCH HIGH 1

19 NOT SUPPLIED ² CEMENT BOARD 1

20 MFPSB ¹ ASSY, FLOOR JOIST BRACE 4

21 REBAR #3 REBAR (Ø3/8") x 36" 6

22 MFP364 ALLTHREAD 1/2-13 x 12" 4

23 NOT SUPPLIED ² Wide FW 0.5625 16

24 NOT SUPPLIED ² 1/2-13 UNC HEX NUT 16

25 NOT SUPPLIED ² 1” FIBERGLASS INSULATION BLANKET 1

REAR WALL

¹ ITEMS NOTED ARE SOLD SEPARATELY. ² ITEMS INDICATED AS “NOT SUPPLIED” CAN BE OBTAINED FROM YOUR LOCAL HARDWARE STORE.

Optional Outside Ø4”

Combustion Air Kit

Model No.: MFP4-AK

(Ø4” Ducting not included)

MFP33SHBL- Herringbone

MFP33FRBL- Running Bond

Refractory Firebrick Liners

(Herringbone Pattern shown, also available in Running Bond - see Pg.27)

Only Mason-Lite MFP33-GD Glass Doors have been tested and approved for use with this

replace.

For installation Instructions, see separate instructions included with doors.

MFP-39/44/49 Fireplace Parts Diagrams

Figure 3

Combustible Floor Systems

Non-Combustible Floor Systems

Figure 4

See Page 16 thru 18

for combustible oor

and framing anchoring

illustrations.

DETAIL A

SCALE 1 : 8

MFP-39/44/49 Fireplace Parts List

ITEM P/N DESCRIPTION

MFP39-1

MFP44-1 MFP49-1

MFP39-2 MFP44-2 MFP49-2

MFP39-3 MFP44-3 MFP49-3

MFP39-3A MFP44-3A MFP49-3A

MFP39-4 MFP44-4 MFP49-4

MFP39-5 MFP44-5 MFP49-5

MFP39-6 MFP44-6 MFP49-6

MFP39-6A MFP44-6A MFP49-6A

MFP39-6B MFP44-6B MFP49-6B

MFP39-7 MFP44-7 MFP49-7

MFP39-8 MFP44-8 MFP49-8

MFP39-9 MFP44-9 MFP49-9

MFP39-10 MFP44-10 MFP49-10

HEARTH (Left or Right)

REAR WALL

SIDE WALL

SIDE WALL (with Ø4” Outside Com-

bustion Air Hole)

SMOKE SHELF (Downdraft Diverter)

DOME REAR - LOWER

LINTEL

LINTEL FRONT

T-BAR

DOME SIDE - LOWER

DOME SIDE - UPPER

DOME TOP Ø12” DOME TOP Ø12” DOME TOP Ø14”

DOME FRONT/REAR - MIDDLE

QTY

ITEM P/N DESCRIPTION

MFP521

NOT SUPPLIED ³

MFP4-AK ¹

NOT SUPPLIED ³

MFPB39 ¹ MFPB44 ¹ MFPB49 ¹

NOT SUPPLIED ³

MFPSB ¹

REBAR

MFP364

NOT SUPPLIED ³

RATING PLATE

ANCHOR PLATE 1” FIBERGLASS INSULATION BARRIER

DAMPER / ANCHOR PLATE (Ø12 OR Ø14)

4 INCH DIA. OUTSIDE AIR KIT

1” FIBERGLASS INSULATION BLANKET

6” METAL BASE

CEMENT BOARD

ASSY, FLOOR JOIST BRACE

#3 REBAR (Ø3/8”) x 34” L.

ALL-THREAD BAR, 1/2-13 UNC X 12”

NUT, 1/2-13 UNC

WASHER, Ø1/2” X 1/16

QTY

A/R ²

MFP(33,39,44,49)SHBL- Herringbone MFP(33,39,44,49)FRBL- Running Bond

Refractory Firebrick Liners

(Herringbone Pattern shown, also available in Running Bond - see Pg.27)

¹ ITEMS NOTED ARE SOLD SEPARATELY. ² MFP39 requires 6, MFP44/49 requires 8 ³ ITEMS INDICATED AS “NOT SUPPLIED” CAN BE OBTAINED FROM YOUR LOCAL HARDWARE STORE.

Optional Outside Ø4”

Combustion Air Kit

Model No.: MFP4-AK

(Ø4” Ducting not included)

Only Mason-Lite MFP39-GD, MFP44-GD and MFP49GD Glass Doors have been tested and approved for use

with this replace.

For installation Instructions, see separate instructions included with doors.

MFP-63 Fireplace Parts Diagrams

Combustible Floor Systems

Figure 6

Non-Combustible Floor Systems

Figure 6

See Page 16 thru 18 for combustible oor

and framing anchoring illustrations.

DETAIL A

MFP-63 Fireplace Parts List

ITEM P/N DESCRIPTION QTY

1 MFP63-1 HEARTH (Left or Right) 2

1A MFP63-1A HEARTH CENTER 1

2 MFP63-2

3 MFP63-3 SIDE WALL 7

3A MFP63-3A SIDE WALL (with Ø4” Outside Combustion Air Hole) 1

4 MFP63-4 DOWN-DRAFT DIVERTER (2 PC) 1 set

5 MFP63-5 DOME REAR - LOWER 1

6 MFP63-6 LINTEL 1

7 MFP63-7 DOME SIDE - LOWER & UPPER 4

8 MFP63-8 DOME SIDE - MIDDLE 2

9 MFP63-9 DOME TOP FOR 16” CLASS A CHIMNEY 1

10 MFP63-10 DOME FRONT/REAR - MIDDLE 2

11 MFP63-11 DOME FRONT/REAR - UPPER 2

12 MFP521 RATING PLATE, MFP63 1

13 NOT SUPPLIED ² Ø16” DAMPER / ANCHOR PLT ---

14 NOT SUPPLIED ² INSULATION BLANKET ---

15 MFP4-AK ¹ 4 INCH DIA. OUTSIDE AIR KIT 1

16 MFPB63 ¹ STEEL SUPPORT PLATFORM 8 INCH HIGH 1

17 NOT SUPPLIED ² CEMENT BOARD, MFP63 ---

18 NOT SUPPLIED ² FIBERGLASS INSULATION BLANKET ---

19 MFPSB ¹ ASSY, FLOOR JOIST BRACE 4

20 REBAR #3 REBAR (Ø3/8”) x (LENGTHS VARY) A/R

MFP364

NOT SUPPLIED ²

REAR WALL (2 PIECES)

ALL-THREAD BAR, 1/2-13 UNC X 12”

NUT, 1/2-13 UNC

WASHER, Ø1/2” X 1/16

3 sets

¹ ITEMS NOTED ARE SOLD SEPARATELY. ² ITEMS INDICATED AS “NOT SUPPLIED” CAN BE OBTAINED FROM YOUR LOCAL HARDWARE STORE.

Optional Outside Ø4”

Combustion Air Kit

Model No.: MFP4-AK

(Ø4” Ducting not included)

MFP63SHBL- Herringbone MFP63FRBL- Running Bond

Refractory Firebrick Liners

(Herringbone Pattern shown, also available in Running Bond - see Pg.27)

Fireplace Overall Dimensions: MFP-33 and MFP-63

21"

11"

16"

33 1/2"

28"

Ø4" OUTSIDE AIR ACCESS CAN ALSO BE INSTALLED ON THE LEFT SIDE OF THE UNIT.

* MIN

46"

68 1/2"

9 1/2"

SECTION B-B

38 1/8"

30 1/4"

15"

4 1/2"

35"

7 3/4"

SECTION A-A

67"

63"

62"

52 1/2"

23"

Mason-Lite MFP33 Fireplace Overall Dimensions

Figure 7

11"

28"

12 1/4"

18 1/2"

22"

16"

7 3/4"

24"

37" 32"

22 1/2"

33"

SECTION A-A

Ø4" OUTSIDE AIR ACCESS CAN ALSO BE INSTALLED ON THE LEFT SIDE OF THE UNIT.

4 1/2"

53 3/4"

*MIN

30"

21"

23"

SECTION B-B

Mason-Lite MFP63 Fireplace Overall Dimensions

67"

62"

Figure 8

11"

16"

33 1/2"

46"

28"

Ø4" OUTSIDE AIR ACCESS CAN ALSO BE INSTALLED ON THE LEFT SIDE OF THE UNIT.

52 1/2"

23"

63"

SECTION A-A

7 3/4"

68 1/2"

* MIN

9 1/2"

4 1/2"

38 1/8"

30 1/4"

15"

7 3/4"

35"

21"

ALL DIMENSIONS ARE IN INCHES. * ALL DIMENSIONS ARE MINIMUM, MORTAR THICKNESS MAY ADD A TOTAL OF UP TO 1 INCH TO THE OVERALL HEIGHT.

Important:

maintained.

Note:

due to the addition of the required metal platform

2 inch minimum clearance to combustibles from the Dome Top must be

If your installation is on combustible floor, the total fireplace height will increase

SECTION B-B

Fireplace Overall Dimensions: MFP-39/44/49

Mason-Lite MFP-39/44/49 Fireplace Overall Dimensions

Figure 9

11"

28"

23"

A/2F

10"

21"

4 1/4"

SECTION J-J

(REFRACTORY LINING NOT SHOWN)

Ø4” Outside Combustion Air Access may be installed on the right or left side.

4 1/2"

61 3/4"

MIN*

32"

38"

SECTION H-H

ALL DIMENSIONS ARE IN INCHES. * ALL DIMENSIONS ARE MINIMUM, MORTAR THICKNESS MAY ADD A TOTAL OF UP TO 1 INCH TO THE OVERALL HEIGHT.

Important:

maintained.

Note:

due to the addition of the required metal platform

2 inch minimum clearance to combustibles from the Dome Top must be

If your installation is on combustible floor, the total fireplace height will increase

Fireplace Overall Dimensions

Model A B C D E F

MFP-39 43” 39” 28-1/2” 27” 38” Ø12-1/4”

MFP-44 48” 44” 33-1/2” 32” 43” Ø12-1/4”

MFP-49 53” 49” 38-1/2” 37” 48” Ø14-1/4”

Fireplace Framing Dimensions

▲! WARNING

Failure to position the parts in accordance with these diagrams or failure to use only parts specically

approved with this appliance may result in property damage or personal injury.

Figure 10

Cross-sectional Top View: Combustible Floor Systems

2” MIN. FROM REAR AND SIDES TO COMBUSTIBLES

NON-COMBUSTIBLE

8” MIN

1’-0” MIN

FACING MATERIAL

HEARTH EXTENSION

8” MIN

1’-0” MIN

1’-8”

MIN

Fireplace Framing Dimensions: Non-Combustible Floor Systems

Figure 11

18” MIN*

1/2”

MIN**

2” MIN. CLEARANCE TO

COMBUSTIBLES AROUND

SIDES, REAR AND TOP OF

FIREPLACE DOME

**IF METAL FRAMING IS USED MAINTAIN A 1/2 INCH MIN. AIR SPACE FROM TOP OF LINTEL.

*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.

MAINTAIN THE 2” CLEARANCE TO COMBUSTIBLES ABOVE THE DOME. DO NOT ATTACH COMBUSTIBLE MATERIALS ON TOP OF THE DOME.

MFP-33 41”

MFP-39 47”

MFP-44 52”

MFP-49 57”

MFP-63 71”

“W”

Model W

Figure 12

Cross-sectional Top View

(Corner Install):

Combustible Floor Systems

Fireplace Framing Dimensions

Model A

MFP-33 70-1/2”

MFP-39 82-1/2”

MFP-44 84-1/4”

MFP-49 86”

MFP-63 91”

Figure 13

18” MIN*

2” MIN

NON-COMBUSTIBLE FACING MATERIAL

NON-COMBUSTIBLE

8” MIN

1’-0” MIN

MAINTAIN THE 2” CLEARANCE TO COMBUSTIBLES ABOVE THE DOME. DO NOT ATTACH COMBUSTIBLE MATERIALS ON TOP OF THE DOME.

HEARTH EXTENSION *

2” MIN

8” MIN

1’-0” MIN

“A”

1’-8”

MIN

* Not provided as part of replace

or sold by MFI.

Where the ooring material at the opening of the replace is

combustible, it is required that the hearth extension be covered with a non-combustible material. The extension should be set

ush against the front of the replace front and measure 20”

minimum at the front (1’-8” min) and 12” minimum (1’-0” min)

beyond the sides of the replace opening as shown in Figures

10 and 12.

If a raised hearth extension is being installed, it must be constructed of non-combustible material and any material under the structure must also be non-combustible.

“H”**

8” MIN*

NON-COMBUSTIBLE FACING (NOT SUPPLIED).

Condition Dim. “H”**

with 6” platform 10”

with 8” platform 12”

without platform 3”

* MINIMUM CLEARANCE TO COMBUSTIBLE MATERIALS. ** MEASURED FROM FLOOR TO TOP OF FIREBRICK LINER.

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 (see Figure 13).

Attention: You will note that there will be a gap between the

replace front and the extension of the non-combustible hearth

material. Be certain that you seal this with non-combustible material.

Figure 14

Non-Combustible Floor Systems

Fireplace Framing Dimensions

MAINTAIN 2" CLEARANCE TO WOOD FRAMING

2" MIN CLEARANCE TO COMBUSTIBLES

Figure 15

Combustible Floor Systems

MAINTAIN 2" CLEARANCE TO WOOD FRAMING

1/2" CEMENT

BOARD

LINTEL

TOP

LINTEL

TOP

2" MIN

2" MIN CLEARANCE TO COMBUSTIBLES

2" MIN

DET

"C"

NON-COMBUSTIBLE FLOOR

SECTION A-A

DET

"C"

1/2" CEMENT

BOARD

28"

2" AIRSPACE CLEARANCE TO COMBUSTIBLES ON REAR AND SIDES OF UNIT

1 INCH THICK CERAMIC

FIBER INSULATION BLANKET

FLOOR JOIST BRACE

2" MIN. AIRSPACE

CLEARANCE TO

COMBUSTIBLE

FRAMING

LINTEL

DETAIL "C"

METAL PLATFORM

MODEL W1 H1 H2 H3 H4 H5

MFP-33 41" 32-1/2" 56-1/4" 7" 39-1/2" 63-1/4" MFP-39 47" 40-1/2" 64-1/4" 7" 47-1/2" 71-1/4" MFP-44 52" 40-1/2" 64-1/4" 7" 47-1/2" 71-1/4" MFP-49 57" 40-1/2" 64-1/4" 7" 47-1/2" 71-1/4" MFP-63 71" 42-3/4" 75" 9" 51-3/4" 84"

2" MIN

METAL

PLATFORM

28"

SECTION A-A

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.

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.

WARNING: THIS FIREPLACE HAS BEEN TESTED FOR USE WITH OPTIONAL MASON-LITE GLASS DOORS MFPXX-GD ONLY.

WARNING:

For MFP-33,39,44: Install only approved, listed UL 103-12” I.D. Class A Chimney System.

For MFP-49: Install only approved, listed UL 103-14” I.D. Class A Chimney System.

For MFP-63: Install only approved, listed UL 103-16” I.D. Class A Chimney System.

Chimney maximum height: 40 feet

Chimney minimum height: 14 feet (with o󰀨set = 17 feet) 2 o󰀨sets maximum.

Important: Follow the chimney pipe manufacturer’s

instructions on the installation of their specic ue system.

NOTICE: when installed in Canada, the Mason-lite needs to use ULC S-604 and ULC-610 listed chimney (Only Canadian approved chimney)

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.

DO NOT USE OR STORE GASOLINE OR OTHER FLAMMABLE LIQUIDS OR GASES IN OR NEAR THE FIREPLACE!

ATTENTION: A 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 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 eld assembly. The 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 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 rebox and can be purchased

from the manufacturer.

These replaces are not intended to serve as a primary heat source, rather, the replace was expressly created as a

supplemental source of heat. The unit is designed for use with solid fuels such as cord wood.

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 rebox surfaces per specications in this manual.

DO NOT USE A FIREPLACE INSERT OR OTHER PRODUCTS NOT SPECIFIED FOR USE WITH THIS FIREPLACE.

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.

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

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 replaces may be installed on either combustible or non-combustible oors. In order for the replace to be installed on a combustible oor though, it is necessary that the replace be supported on a platform or sub-oor that is non-combustible.

The Four Components of the Mason-Lite Fireplace:

• Combustible or Non-Combustible Floor

• Non-Combustible Raised Platform

• MASON-LITE Firebox and Smoke Dome

• UL103 class A listed chimney system required.

Important: Follow the chimney pipe manufacturer’s instructions on the installation of their specic ue system.

Figure 16 - Typical Installations

Internal

Wall

Installation

Full Projection 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

specied minimum clearances to combustibles.

Testing and listing for these Mason-Lite Fireplaces has been undertaken by PFS, Inc.

Corner Installation

Flush

Installation

Careful step-by-step instructions for each phase of the installation procedure will be given for the Mason-Lite

conventional radiant heat 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 oor on which it rests.

• Chimney system measurements.

• Choice of materials and craftsmanship in replace and

hearth nishing.

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 ooring. See

section on Installing Outside Air on page 28.

FIREPLACE DOME TOP

Clearances to Combustibles

The distance to be maintained from the surfaces of the

replace to combustibles must be observed. Below is a list of

the most common combustible materials to name a few:

Drywall Wood ooring Plywood Sub-ooring Wood Framing Particle board

Mill board Plywood paneling

Maintain the following clearances:

• Unit sides, rear, Dome sides, rear & top: 2” (51 mm)

• Combustible Floors (MFP-33,39,44,49): 6” (152 mm)

• Combustible Floors (MFP-63 only): 8” (203 mm)

• Combustible Sheathing above opening top: 18” (203 mm)

• Sheathing or trim to opening sides: 8” (203 mm)

• Mantel above opening: (see Fig.17)

• Opening to sidewall: 24” (609 mm)

• Hearth extension beyond front: 20” (508 mm)

• Hearth extension beyond sides: 12” (305 mm)

• Insulation from rebox: 2” (51 mm)

Figure 17

SAFE ZONE FOR PROJECTION OF

22"

20"

18"

COMBUSTIBLE

16"

Understanding Clearance to Combustibles

There is a build-up of a 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

These Mason-Lite Fireplaces have been designed with

clearance to combustible oors as indicated in Page 18. Cover any part of the combustible oor system left exposed with 1” (one inch) thick ceramic ber insulation rated up to 2,100° F.

Attention: It is critical to abide by the clearances listed in this

manual for all components specied as it allows for movement

MANTEL

10"

MATERIAL

NON-COMBUSTIBLE

ONLY ZONE

10"

TOP OF FIREPLACE OPENING

1 1/2"

LINTEL FRONT

of hot air from the fireplace into interior areas of the chimney chase. Also, be certain that the chimney system be installed as stated below. Prior to starting the installation, check with

local, regional or state codes for any restrictions or required

permits regarding your replace installation.

Mason-Lite Fireplace & Chimney System

1) The Mason-Lite is designed to be installed with a listed UL103 - Class A, Metal Chimney System.

2) This Mason-Lite replace 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 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.

4) There are many conditions beyond the manufacturer’s

control regarding improper 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 correct heights; system drafts caused by faulty mechanical systems; adverse weather conditions or any other environmental situations over which the manufacturer has no control.

5) Inspect all replace & 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 modi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 replace. You must follow these

chimney instructions.

7) Caution is urged if it is decided to add insulation material 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

specied 2” (two inch) clearance.

8) Air spaces around rebox must remain open. DO NOT ll 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 replace to the top/termination chimney

is 40 feet. The minimum installed height of the completed

Chimney System is 14 feet with a straight ue stack, 17 feet if the chimney includes one or two o󰀨set sections.

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

oor system on which the replace will rest.

For replace support foundations installed on concrete refer to Appendix I and II (pages 31 & 32) for specic instructions.

Attach the rebox side wall anchors to steel support frame by inserting all-thread rods through holes on the bottom ange

on the steel support frame as shown in Figure 24 and 25. 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 18

Metal Base Assembly

A35 Brackets (16 required)

Rebar locations

Lay-out the position of the replace and drill holes where

the rebar will be located. Secure the #3 rebar 4 inches into the concrete foundation with ITW Epoxy or Simpson Epoxy. Follow manufacturer’s instructions for installation of rebar into slab.

Wood Floor

Anchorage of replace to wood oor construction is required.

Refer to Figure 21 for anchorage dimensions. Four anchors

are required to attach to the sub-ooring framing.

Crawl Space or Upper Floor:

For installation of rebox over combustible crawl spaces or upper oors, anchorage of the rebox is required. Illustrations

of examples of possible anchorage methods are shown in

Figures 18 thru 20 depending upon the type of oor framing.

Final method of anchorage is to be determined by licensed design professional.

For conventional framing, where the oor joists are parallel with the sides of the rebox, the addition of oor joists to align

with the anchor brackets allows the brackets to be directly

connected to the oor joists.

Note that additional oor joists may be required to support the weight of the rebox and chimney. Where the oor joists run parallel to the front of the rebox, anchorage can be

accomplished in like manner as shown in Figure 18 using

blocking between the oor joist.

2X FLOOR JOIST

EXAMPLE ONLY

2X FLOOR JOIST

Floor Sheathing not shown for clarity

Figure 19

I-Joist Anchoring Top View

For oors supported by I-Joists, the method of anchorage

is illustrated in Figures 19 and 20. Figure 23 illustrates the

general arrangement of anchorage to 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 oor framing. Additional oor joists or I-joists may be required as determined

by the licensed design professional.

The dead weights for the replace 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 replace

installation.

As stated above, it is desirable to place additional framing for alignment of anchor rods. Refer to Figure 21 for anchor rod locations.

Simpson Strong-Tie A-35 or equivalent

Figure 20

I-Joist Anchoring Bottom View

Example Only

I-Joist

Anchor Brackets

I-JOISTS

Example Only

MASON-LITE Weight Determination

The following are dead load weight estimates for the Mason-Lite Fireplace.

Table I

Fireplace Model

Fireplace Weight

Mortar, Rebar & Ready Mix Concrete

Firebrick Lining

MFP-33 MFP-39 MFP-44 MFP-49 MFP-63

835 lbs. 1,194 lbs. 1,250 lbs. 1,359 lbs. 1,704 lbs.

200 lbs. 350 lbs. 357 lbs. 364 lbs. 370 lbs.

290 lbs. 333 lbs. 345 lbs. 356 lbs. 435 lbs.

Damper/Anchor Plate

Steel Platform

Floor Area

Other Weight Considerations:

1) Fireplace nished facing (surround): This information needs to be obtained from the contractor.

2) Weight of metal ue: See chimney manufacturer’s weight specications. Some chimney systems can weigh up to 50 lbs per lineal foot.

17 lbs. 17 lbs. 17 lbs. 17 lbs. 21 lbs.

89 lbs. 94 lbs. 96 lbs. 100 lbs. 132 lbs.

37” x 28” (7.2 ft²) 42” x 28” (8.12 ft²) 48” x 28” (9.33 ft²) 53” x 28” (10.30 ft²) 67” x 28” (13 ft²)

Table II - Deection Limits

Construction L S or W D +L1

Floor Members

For wood structural members having a moisture content of less than 16 per cent at time of installation and used under dry

conditions, the deection resulting from L + 0.5D is permitted to be substituted for the deection resulting from L + D.

Note that MASON-LITE cannot accept responsibility for structural oor support details. All drawings are presented as mere illustrations to indicate the presence of the underlying 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 oor support system.

Figure 21

I/360 --- I/240

Figure 22

Model A

MFP-33 32”

MFP-39 38”

MFP-44 43”

MFP-49 48”

MFP-63 62”

Figure 23

Typical Anchorage Layout

2” min clearance

10"

Fireplace outline

EXAMPLE ONLY

10”

SECTION VIEW ROTATED 90CW

8” Metal Base (MFP-63)

Combustible Floor Installations

6” Metal Base (MFP-33/39/44/49)

The MFP-63 Mason-Lite Metal Base (MFPB63) ensures the minimum eight inch clearance above combustible ooring is maintained. A layer of 1/2” minimum Concrete Board is required on top

of the platform and 1” thick berglass blanket below as shown

in Figure 24.

Figure 24

Place 1/2” cement board on top of platform. May be a single piece or two halves as shown.

Place 1” Fiberglass Insulation Blanket under platform.

Hearth Ember Shields 26ga. galvanized

Four (4) All-Thread Rods are secured to the top ange of the Metal Base with eight

(8) at washers (2”OD x 9/16”ID x 0.10”)

and eight (8) 1/2-13 UNC Nuts.

MFP-63: 8” Metal Base Assembly

28”

67”

The Mason-Lite Metal Base ensures the minimum six inch clearance above combustible ooring is maintained.

6” Metal Bases

Model P/N

MFP-33 MFPB33

MFP-39 MFPB39

MFP-44 MFPB44

MFP-49 MFPB49

Figure 25

Place Cement Board on top of platform.

26 ga. galv. Hearth Ember Shields

MFP-33/39/44/49: 6” Metal Base Assembly

Anchor Bracket All-Thread Rods are secured to the bottom ange

of the Metal Base with eight (8) at washers (2”OD x 9/16”ID x

0.10”) and eight (8) 1/2-13 UNC Nuts.

▲! IMPORTANT:

Remember to tighten up nuts below the oor after replace

installation in order to take up any slack in the threads.

Hearth Ember Shields:

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 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.

Note: When using an on-site constructed hearth extension, you may use a sand-cement grout between the hearth and extension instead.

Place 1” thick Fiberglass Blanket under Platform

Four (4) All-Thread Rods are secured to the top ange

of the Metal Base with eight (8) at washers (2”OD x

9/16”ID x 0.10”) and eight (8) 1/2”-13 UNC Nuts.

Anchor Bracket All-Thread Rods are secured to the bottom ange

of the Metal Base with eight (8) at washers (2”OD x 9/16”ID x

0.10”) and eight (8) 1/2-13 UNC Nuts.

A layer of 1/2” minimum Concrete Board is required on the top and mid-section of the Metal Base as shown in Figure 25. The required sizes are shown in the following table:

1/2” Thick Cement Board Dimensions

Model A1 A2 B1 B2

MFP-33 37” 28” 30” 23”

MFP-39 43” 28” 36” 23”

MFP-44 48” 28” 41” 23”

MFP-49 53” 28” 46” 23”

Note: The insulation (concrete) board chosen must meet a

thermal conductivity rating ≥ 0.4 Btu-in/hr-ft²-F°.

What You Will Need

You will 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 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. You 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

rebox. These are available from MFI. See page 27.

Tools needed for 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.

Materials needed for concrete slab

(non combustible) installation

MFP33:

Six (6) pieces 3/8” rebar x 26” long (included with unit) Six (6) pieces 3/8” rebar x 12” long (included with unit)

MFP39:

Six (6) pieces 3/8” rebar x 34” long (included with unit) Six (6) pieces 3/8” rebar x 12” long (included with unit)

MFP44/49:

Eight (8) pieces 3/8” rebar x 34” long (included with unit) Eight (8) pieces 3/8” rebar x 12” long (included with unit)

MFP-63:

Ten (10) pieces 3/8” rebar x 34” long (included with unit). Ten (10) pieces 3/8” rebar x 12” long (included with unit).

ALL UNITS:

• 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 for MFP-33/39/44/49 or

two 50 lb. bags for MFP-63).

Materials needed for

combustible wood floor installation:

MFP33:

Six (6) pieces 3/8” rebar x 26” long (included with unit) Six (6) ea. All-thread x 12” long (with nuts and washers) Metal base - 6 inch.

MFP39:

Six (6) pieces 3/8” rebar x 34” long (included with unit) Six (6) ea. All-thread x 12” long (with nuts and washers) Metal base - 6 inch.

MFP44/49:

Eight (8) pieces 3/8” rebar x 34” long (included with unit) Eight (8) ea. All-thread x 12” long (with nuts and washers) Metal base - 6 inch.

MFP-63:

Ten (10) pieces 3/8” rebar x 34” long (included with unit). Ten (10) ea. All-thread x 12” long (with nuts and washers) Metal base - 8 inch.

ALL UNITS:

• 1” ceramic fiber blanket the size of the hearth base to go under the metal base.

• ½” cement boards (cut to size).

• Four or more fasteners to attach metal base to floor joists

• Mason-Lite Mortar (one 50 lb. bag for MFP-33/39/44/49 or two 50 lb. bags for MFP-63)

• Three (3) - 90 lb. bags of ready mix concrete with 1/4” or smaller aggregate.

Field Assembly Procedures

a) Mixing the MASON-LITE mortar – The mortar comes

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.

b) Apply about ½” (one-half inch) thread of mortar. The mortar

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!

c) Some mortar will “ooze out” when placing components

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.

d) Make sure components are level. It’s extremely important

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 replace that will not be plumb or level. Use wood shims instead. You will 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 removed any shims, you will want to cover any gaps that may have resulted with the mortar.

MFP-33/39/44/49 Fireplace Assembly

Assembly Instructions

1. Place the Mason-Lite Fireplace hearth base on top of your

non-combustible oor or metal base. For concrete slabs, supporting oor needs to be rated at ASTM 90.

2. a) Combustible Floor Installations: Mix up a batch of

mortar and adhere hearth slabs to the cement board (see Figure 25). 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 pages 8 and 9. Position Hearth slabs and mark rebar center locations. Drill 4 inches into concrete slab and secure the 8 pieces of 12 inch rebar with epoxy.

Figure 26

Apply mortar

between joints

28”

12 inch rebar

Left Side Hearth 2nd

Right Side Hearth 1st

Two 26 ga. galv. hearth ember shields required (not supplied)

Model W

MFP-33 37”

MFP-39 43”

MFP-44 48”

MFP-49 53”

Figure 28

Hearth shown prepared for Left Side position

6. Before installing side walls, conrm placement of outside combustion air access (if required), this can be installed either side depending on which side is accessible to outside combustion air (all diagrams in this manual show the combustion air inlet hole on the right side). Prepare side wall and rear wall mating surfaces with the prepared mortar and begin assembly.

Figure 29

Side Wall shown prepared for Right Side Air Access. For Left Side, bead opposite side.

1/2” AWAY FROM EDGES

3. Mix a batch of mortar and prepare Right Side Hearth bottom surface to be bonded as shown in Figure 27.

4. Align Right Side Hearth to the outline created. The overall width should allow for an approximate gap of 1/8” between slabs for the additional mortar to unite the remaining slab.

Check for surface atness, level if necessary.

Figure 27

APPLY MORTAR BEAD TO ALL MATING SURFACES

Hearth section shown prepared for Right Side position

1/2” MORTAR BEAD TYPICAL

1/2” AWAY FROM EDGES

5. Apply mortar to the remaining Hearth except this time apply

beading on surface to be facing oor as shown in Figure 28.

7. Keep the assembly of the next sections of the rebox 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 30

Side Wall

Apply mortar

Combustion Air Access Right or Left (Right shown).

Apply mortar

Rear Wall

Side Wall

For MFP-33 installation continue to next page, for MFP-39/44/49 installation turn to page 22.

MFP-33 Fireplace Assembly

8. MFP-33 ONLY: After the second row of rebox is complete,

install Smoke Shelf and remaining side walls (Figure 31). Mix approx. 2 cu. ft. of Ready-Mix Concrete. Insert 28” rebar vertically through the cells, into the holes in the hearth, adjacent to the rebar and/or all-thread sticking up from the hearth. Fill all cells with Ready-Mix Concrete mix.

Figure 31

MFP-33 Only

Install Smoke Shelf MFP33-4 after 2nd row of walls.

Add rebar and ll all

cells with concrete mix

11. As you are connecting each MASON-LITE component, 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 are smooth and uniform.

Make sure connections are covered with an adequate amount of mortar. Remember that you have the option of using shims but they must be removed and any holes

lled. Make any adjustments to the replace alignment

before continuing to the next step.

12. Assemble Upper Dome (MFP33-10) and Dome Sides (MFP33-8) as shown in Figure 33. Check your assembly here. If things are proceeding as they should be, the nished top surface should be at and level.

Install rebar adjacent to all-thread or rebar

stemming from oor.

9. Set the Lintel and Lower Rear Dome in place as shown

in Figures 32. 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 satised with

the degree of levelness, you can address any gap that may have occurred with an appropriate amount of mortar.

Note: Although you are cautioned to use MASON-LITE mortar sparingly because it does have such holding power,

you should look over the rebox assembly at the end and ll

in any gaps, especially joint connections, with the mortar.

Important: Adjustments can only be made while the mortar is still wet when correcting for squareness and leveling.

10. Assemble Lower Dome Sides as shown in Figure 32. The

beveled face lines up with the inward angles of the lintel sides. Top surfaces should be level.

13. Finally, set the Dome Top into position. Be sure that it is

ush in every direction as you place it on the crest of the

smoke dome wall assembly. After this is done, proceed to section on “Installing Damper and Chimney System” on

page 26.

Note: The chimney hole on the Dome Top is not centered

from front to back - it should be o󰀨set closest to the rear of the replace (see Figure 33).

Figure 33

Dome Sides MFP33-8

Dome Top (MFP33-9) Center of chimney hole is o󰀨set towards the rear.

Position marker towards front as shown.

Upper Domes MFP33-10

Figure 32

These surfaces should

be ush.

Lower Rear Dome MFP33-5

MFP-33

Lower Dome Sides MFP33-7

T-Bar

Lintel Front

MFP-39/44/49 Fireplace Assembly

14. MFP-39/44/49: After the third row of rebox is complete,

place #3 rebar (36” long) vertically through the cells until they reach bottom. Position them adjacent to the rebar or all-thread sticking up from the hearth.Figure 34.

Figure 34

15. Install Downdraft Diverter and nal row of Side Walls (Fig.35). All components must be level. Mix approx. 2 cu. ft. of Ready-Mix Concrete. Insert 28” rebar vertically through the cells, into the holes in the hearth, adjacent to the rebar and/or all-thread sticking up from the hearth. Fill all cells with Ready-Mix Concrete mix.

Figure 35

Add rebar to cells

and ll with mortar.

12 inch rebar or all-thread

Downdraft Diverter (Smoke Shelf)

17. Assemble Lower Dome Sides as shown in Figure 37. The

beveled face lines up with the inward angles of the lintel sides. Resulting top surfaces should be level.

Figure 37

Lower Dome Sides (Rating Plate faces inside)

18. Verify that the Smoke Dome side, front and rear walls are aligning correctly and that mating surfaces are smooth and uniform. Make sure connections are covered with an adequate amount of mortar. Remember that you have the option of using shims but they must be removed and

any holes lled. Make any adjustments to the replace

alignment before continuing to the next step.

19. Assemble Upper Dome and Dome Sides as shown in Figure 38. The top surfaces of all dome parts should be

at and level.

Figure 38

Upper Dome Sides

16. Set the Lintel, T-Bar, Lintel Front and Lower Rear

Dome as shown in Figure 36. Check that all is level. If adjustments are needed, use shims and ll gaps with an appropriate amount of mortar.

Note: Although you are cautioned to use MASON-LITE mortar sparingly because it does have such holding power,

you should look over the rebox assembly at the end and ll

in any gaps, especially joint connections, with the mortar. Important: Adjustments can only be made while the mortar is still wet when correcting for squareness and leveling.

Figure 36

Lintel

T-Bar

Lintel Front

Lower Rear Dome

Upper Dome Front/Rear

20. Finally, set the Dome Top into position. Be sure that it is

ush in every direction as you place it on the crest of the

smoke dome wall assembly.

Note: The chimney hole on the Dome Top is not centered

from front to back - it should be o󰀨set closest to the rear of the replace. The front of the dome is indicated by a marker (see

Figure 39).

Figure 39

Center of chimney hole is

o󰀨set towards the rear.

Marker indicates front of Dome Top.

MFP-39/44/49

MFP-63 Fireplace Assembly

MFP-63 Assembly Instructions:

21. Place the Mason-Lite Fireplace hearth base on top of your

non-combustible oor or metal base. For concrete slabs, supporting oor needs to be rated at ASTM 90.

22. a) Combustible Floor Installations: Mix a batch

of mortar and adhere hearth slabs to the cement board (see Figure 24, Pg.18). All-thread rods should stick up through the holes on the hearth slabs.

b) Non-combustible Floor Installations: Draw an outline footprint 67” x 28” for the MFP-63 footprint and mark the centers for the rebar locations using the hearth slabs as templates. Drill holes for rebar 4 inches into the concrete slab and secure the 10 pieces of 12” long rebar with epoxy.

Figure 40

Apply mortar between joints

Left Side Hearth 3rd MFP63-1

Center Hearth 2nd MFP63-1A

Right Side Hearth 1st MFP63-1

Figure 42

MFP63-1 Hearth (shown prepared for Left Side position)

26. Before installing side walls, conrm placement of outside combustion air access (if required), this can be installed either side depending on which side is accessible to outside combustion air (all diagrams in this manual show

the combustion air inlet hole on the right side).

27. Prepare side wall mating surfaces with the prepared mortar as shown in Figure 43.

Figure 43

Side Wall shown prepared for Right Side Air Access. For Left Side, bead opposite side.

67”

28”

23. Mix a batch of mortar and prepare bottom surface of Right

Side Hearth to be bonded (Figure 41), then lower the piece into place on the outline created before. Align lower Right Side Hearth on the outline created. The 67” width dimension allows for an approximate gap of 1/8” between slabs for the additional mortar to unite the remaining slabs. Continue process for remaining hearth sections while moistening and adding mortar between joints at slab ends.

Figure 41

Apply mortar bead to all mating surfaces.

MFP63-1 Hearth shown prepared for Right Side position

Typical 1/2” mortar bead

1/2” away from edges

1/2” AWAY FROM EDGES

28. Keep the assembly of the next sections of the rebox side walls moving up (Figure 44), 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 every joint.

Figure 44

Apply mortar

Begin with the smallest rear wall to the right side as shown below.

24. Apply mortar in like manner to the Center Hearth and place next to the Right Side Hearth. Check that surface is LEVEL and use shims if necessary.

25. Apply mortar to the remaining Hearth except this time

apply beading on surface to be facing oor as shown in

Figure 42.

Combustion Air Access Right or Left (Right shown).

MFP-63 Fireplace Assembly

29. Rear walls are staggered on every row as shown in Figures 45 and 46.

Figure 45

Apply mortar

Figure 46

Rear Wall (long)

Rear Wall (short)

Rear Wall (long)

Stagger positions of rear wall

Rear Wall (short)

31. After the last side walls are installed, place #3 rebar (10 each, 36 inch long) vertically through the cells, into the holes in the hearth, adjacent to the rebar and/or all-thread

sticking up from the hearth and ll all cells with Ready-Mix

concrete mix.

32. Set the Lintel and Lower Rear Dome in place as shown in Figure 48. Check that all is level. If you need to make adjustments, use shims between the lowest wall component and the top surface of the base plate. Once leveled, ll any resulting gaps with mortar.

Important: Adjustments can only be made while the mortar is still wet when correcting for squareness and leveling.

Figure 48

MFP63-6 Lintel

Fill all cells with

mortar mix.

MFP63-5 Lower Rear Dome

30. After the third row of rebox is complete, install Downdraft Diverter sections (MFP63-4) as shown in Figure 47.

Figure 47

Downdraft Diverter (short)

Downdraft Diverter (long)

33. Assemble Dome Sides (MFP63-7) as shown in Figure

49. The beveled face lines up with the inward angles of the lintel sides. Top surfaces should be level.

Figure 49

Rating Plate

MFP63-7 Dome Side

34. Position Middle Domes (MFP63-10) so that outer faces

are ush to the lower dome as shown in Figure 50.

35. Carefully install Dome Middle Sides (MFP63-8) as shown

in Figure 50.

MFP-63 Fireplace Assembly

Figure 50

36. As you are connecting each MASON-LITE component, 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 are smooth and uniform. Make sure connections are covered with an adequate amount of mortar. Remember that you have the option of using shims but they must be removed and

any holes lled. Make any adjustments to the replace

alignment before continuing to the next step.

37. Assemble Upper Domes (MFP63-11) and Dome Sides (MFP63-7) as shown in Figure 51. Check your assembly here. If things are proceeding as they should be, the

nished top surface should be at and level.

Figure 51

MFP63-8 Dome Middle Side

MFP63-10 Dome Middle

MFP63-8 Dome Middle Side

MFP63-9 Dome Top

38. Finally, set the Dome Top (MFP63-9) into position. Be sure

that it is ush in every direction as you place it on the crest

of the smoke dome wall assembly.

Note that the chimney hole on the Dome Top is not centered

from front to back - it should be o󰀨set closest to the rear of the replace. (see Figure 52).

Figure 52

Center of Ø16” chimney hole

is o󰀨set towards the rear.

10”

12-1/2”

MFP-63

39. Now that you have completed the smoke dome assembly, all the components should stack up for a smooth transition

into the 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 re brick lining and the ue components.

WARNING: DO NOT PACK REQUIRED AIR SPACES WITH INSULATION OR OTHER MATERIALS.

40. For use of Masonry Chimney sections on the Mason-lite

replaces, please see Masonry Chimney instructions

located online at www.mason-lite.com

MFP63-11 Upper Dome

MFP63-7 Dome Side

Figure 53

Mason-Lite Masonry Chimney sections

All-thread through Dome Top

Check with local codes for use of Masonry Chimney in your area - restrictions may apply.

Installing Damper and Chimney System

All chimney systems must be installed with an integrated

Damper System / Anchor Plate installed on or in the replace.

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.

If installing a Damper/Anchor Plate Combination see steps 41 thru 44

41. Apply a 1/4” bead of gasket cement around the base of the Anchor Plate as shown in Figure 54. Apply a 1” thick

ceramic ber blanket to the gasket cement.

Figure 54

Apply a 1/4” bead of gasket cement around base of Anchor Plate

45. If installing a Damper Plate only as shown in Figure 56

(not supplied), refer to accompanying instructions and use an Optional Damper Support Kit obtainable from MFI. An

Anchor Plate will still be required for metal ue

connection. If using Masonry Chimney consult your local codes.

Figure 56

Optional Damper Support Sides

Optional Damper Support Rear

Optional Damper Plate (by others)

Attention: Clearance to combustible construction cannot be reduced during course of construction. For the safe operation

of the nished replace, these clearances must be followed

when building the framework for the chimney system.

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 re hazard may

occur.

Apply balance of gasket cement in a 1/4” bead on top of smoke dome approx. 1-1/2” around periphery of chimney hole. Install damper assembly on top of unit pressing damper and insulation blanket into cement. Secure with four 1/4” X 1-14” masonry fastener.

Figure 55

Secure with four 1/4” x 1-1/4” masonry fastener.

Adhere 1” ceramic ber

blanket under Anchor Plate.

1/4” bead of gasket cement

42. Place chimney adapter onto top of damper plate and center in opening using gasket supplied with adapter.

43. Attach adapter with screws supplied by carefully drilling holes into damper plate.

44. Attach damper chain stop on center rear of lintel 3” (three inch) vertical from opening using (3) #8 cement fasteners.

Warning: do not interchange chimney manufacturer’s parts

with any other parts except those speci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.

Figure 57

Elbow

Return Elbow

6' Max.

Return Elbow

Elbow

Return Elbow

6' Max.

Ceiling Support

Pipe 16S-16DM

Elbow

Return Elbow

6' Max.

Elbow

Firestop Radiation Shield

A Firestop Radiation Shield is required in multi-story

installations at each oor penetration above that where the

Support Box is located (Figure 58).

Figure 58

Firestop Radiation Shields also provide complete separation

from one 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 Firestop must be

placed into an attic oor as shown in Figure 59.

Firestop Spacer with Living Space Above Ceiling

Existing Ceiling Frame

Firestop Spacer

Eight #8 x 3/4” wood screws

Figure 60).

• The pattern for the 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 certied mason to lay-in the brick. He will follow

the proper instructions from the replace liner manufacturer

and also understand the type of adhesive or cement he is to use.

• Make sure the replace is installed with the nished rebrick

oor of the replace so that it is at least 11” (eleven inches) above the combustible oor system.

• Disclaimer: Masonry Fireplace Industries wishes to express

that as the manufacturer of Mason-Lite Fireplaces, they cannot take any liability or responsibility for the way the

rebrick or the rebrick mortar performs. It is not unusual in the course of the life of the rebrick, or the rebrick mortar,

for heat stress cracks to appear. MFI cannot be responsible for this and other wear and tear to the rebrick and mortar.

Figure 60

Maintain 1/4 inch gap all around Firebrick Hearth

Figure 59

Firestop Spacer with Attic Space Above Ceiling

Eight #8 x 3/4” wood screws

Firestop Spacer

Existing Ceiling Frame

Follow your chimney manufacturer’s instructions on specic

guidelines pertaining to their chimney and Firestop Radiation Shield installation instructions.

Mason-Lite Firebrick Liners

Custom Firebrick Lining

WARNING: DO NOT OPERATE FIREPLACE

WITHOUT FIREBRICK LINING. Doing so will void all warranties and may cause a hazardous condition.

• Custom Firebrick Lining is not supplied by Masonry Fireplace

Industries (MFI). There is, however, the option of Modular Prefabricated Panels that can be obtained from MFI. See exploded parts page for details.

• If Custom Firebrick Lining is desired, it is required that

the brick be at least 1-1/8” inch thick and must be rated

ASTM-C1261. Important: Allow at least 1/4 inch

clearance around rebrick hearth to allow for heat expansion otherwise your rebrick may crack (see

1/4 inch

Figure 61

Area behind Rear Firebrick Liner Panel can remain empty

1/4 inch

Modular Firebrick Lining

If using our Mason-Lite Firebrick Liners, use the extra mortar we supply. Install Hearth Liner rst.

IMPORTANT: Maintain 1/4 inch clearance around hearth to allow for heat expansion. Failure to do so may cause cracks in your rebrick hearth!.

Next, install the rear and sides last. 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. The rear Liner Panel is straight from the bottom to

the top front edge of the Downdraft Diverter edge. The space behind does not have to be lled (Figure 61).

The following Firebrick Patterns are available from MFI:

MFP(XX)SHBL- Herring Bone

Figure 62

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 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 specic 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 rebrick side lining (see Figure 64). The tubing that goes out of the rebox wall must feed into a 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.

MFP(XX)FRBL- Running Bond

Figure 63

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 replace, 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 Figure 17. Walls that Adjoin – Safety codes and all practical outlooks insist that your

replace cannot be installed closer than 2 ft. (two feet) to any walls in the room the replace is housed in or to any walls of

adjoining rooms.

Figure 64

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.

Caution in Regards to Combustibles – If any part of the replace

or objects in the room (curtains, rugs, paint, cushions, etc.) start

to show warping or discoloration due to heat from the replace, it is time to take immediate action. Do not use the replace until you have gured out how to address the problem. You are facing a potential re hazard. MFI cannot be responsible for the make-up of material on the exterior of the 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 airow or the modications to the room

itself.

OPTIONAL OUTSIDE AIR KIT (MODEL MFP-AK/F)

The installation of an outside air kit should be performed during

the rough framing of the replace due to the nature of it’s

location. Outside combustion air is accessed through a vented crawl space (MFP4-AKF) or through a sidewall (MFP4-AK).

▲! CAUTION: Combustion air inlet ducts shall not

terminate in attic space.

The maximum height for the air vent cannot exceed

3 feet below the ue gas outlet of the termination.

Figure 65

Secure to Collars with Metal Tape, Screws or Straps (Min. of 1/4” x 20” in size)

Vent Hood Required for Wall Installation

Air Inlet location must allow for bushes or snow

LINEAL GAIN

PART NO. DESCRIPTION GAIN

Mason-Lite Fireplace 66-1/2”

12-12DM

12-12HT

18-12DM

18-12HT

24-12DM

24-12HT

36-12DM

36-12HT

48-12DM

48-12HT

RLT-12D

RLT-12HT

STL-12D

* The lineal gain for the terminations is measured to the ue gas

outlet height.

Pipe Section 10-5/8”

Pipe Section 16-5/8”

Pipe Section 23-5/8”

Pipe Section 34-5/8”

Pipe Section 46-5/8”

Round Termination 7-3/4”

Square Chase-Top

with Slip Section

7” to 15” *

Vented Crawl Space (check local codes before installing in a Vented Crawl Space)

CHIMNEY PIPE

▲

WARNING: Label part number 900599-01 must be

applied by the installer to all chimney pipe sections but is not required on sections that will be visible after the installation is complete. Label must wrap around the circumference of the pipe. See accessories, page 25 for Kit F2659.

The IHP chimney system consists of 12”, 18”, 24”, 36” and 48” snap-lock, double-wall pipe segments, planned for maximum adaptability to individual site requirements. Actual lengths

gained after tting overlaps must be taken into consideration

(lineal gain) and are given in the lineal gain chart (see Figure 8). Lineal Gain is the actual measurable length of a part after two or more parts are connected. For Canada, use chimney parts designated “HT”.

▲! WARNING: The opening in the collar around the

chimney at the top of the replace must not be obstructed. Never use blown insulation to ll the chimney enclosure.

Figure 65

Hemmed End

15” Galvanized Outer Pipe

12 3/8” Stainless Inner Pipe

ASSEMBLY AND INSTALLATION OF DOUBLE WALL CHIMNEY SYSTEM

Each double wall chimney section consists of a galvanized

outer pipe, a stainless steel inner ue pipe and a wire spacer.

The pipe sections must be assembled independently as the chimney is installed. When connecting chimney directly to

the replace, the inner ue pipe section must be installed rst

with the lanced side up. The outer pipe section can then be

installed over the ue pipe section with the hemmed end up.

Press down on each pipe section until the lances securely

engage the hem on the replace starter. The wire will assure

the proper spacing between the inner and outer pipe sections. Continue to assemble chimney sections as outlined above, making sure that both the inner and outer pipe sections are locked together. When installing double wall snap-lock chimney together, it is important to assure the joint between the chimney sections is locked. Check by pulling chimney upward after locking. The chimney will not come apart if properly locked. It is not necessary to add screws to keep the chimney together (exception: see Figure XX, Page XX).

The height of a vertical chimney pipe supported ONLY by the

replace, must not exceeed 20 feet. Chimney heights above 20

feet must be supported.

Adding a Gas Pipe

Mason-Lite Owner’s Operation & Precautions

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 rebox – the oor, 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

oor, back wall, or side walls. Follow local building and electrical

code requirements.

Fireplace Grates and Screens

To complete your replace installation, a replace grate will be required for safe operation. The replace grate can be obtained

from MFI or if choosing an alternate, it must be sized to 50% of

the hearth maximum. Additionally. a replace screen must be

installed for safety.

When ordering, please refer to the parts lists in the beginning of this manual.

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 replace without a re safety screen installed.

CAUTION: The manufacturer cautions against using chemical

chimney cleaners. Never use charcoal or coal in the replace

under any circumstances.

First Lighting of the Mason-Lite – After construction is completed,

all elements of the replace and chimney system must be

completely dry. This means that the unit must stand without any

ring for a minimum of 28 days. Only after that period of time can a rst lighting take place.

The rst 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 re burn for more than one hour. After this rst lighting – when the replace has started to “cure” Do not set another re for at least 24 hours.

Second Lighting – Start the re slowly and gradually as you did with the rst lighting, but this time you can burn up to ten pounds of rewood, probably four to ve logs that are 3” (three inches) in diameter. With the second lighting you can let the re

burn two hours – no more.

After First and Second Lighting – When the replace has been

properly cured with 1st and 2nd lighting, you will be able to add a full fuel load to the MASON-LITE which is about 10 to 15

pounds of 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.

Fireplace Door Accessory

IMPORTANT: Only Mason-Lite MFP33-GD/ MFP39-GD/ MFP44GD/ MFP49GD Glass Doors are approved for use with

this replace.

For installation Instructions, see separate instructions included with doors.

Without a grate for your rewood to rest on, you cannot get the air ow you need under the re which makes for a hotter, more satisfying re.

Don’t “over burn” – Always remember, your Mason-Lite Fireplace is an elegant addition to your home. It is not an indoor incinerator!

If you start to use the 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 o󰀩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!

Starting a Fire and Basic Operation

IMPORTANT: DO NOT BURN A FIRE WITHOUT FIREBRICK LINER.

(see Page 27 for details)

Before starting a re in your 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. Top your fuel load with a couple of hardwood logs or split logs (Oak or Hickory). Make sure you stack the logs so they fall inside the grate as they burn.

Note: 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.

SURFACE CRACKS

Mason-Lite replaces are manufactured using high quality

materials. During the drying process though, surface cracking

may occur. These small cracks (under 1/16” will not a󰀨ect the replace safety or performance). During the assembly process, ll surface cracks with thin-set mortar and brush when drying for a smooth surface nish.

REMOVAL OF CREOSOTE AND SOOT FORMATION

Creosote vapors are known to form in the relatively cool

chimney ues of slow burning res, hence, creosote residue collects on the ue lining.

When you are satised with the arrangement of your wood

load, light the paper which in turn will ignite the kindling, then

the softer wood and nally, the harder wood logs. As the re burns, you can carefully lay additional logs on the ame, but

make sure you place them gently without forcing them into the opening.

Annual Fireplace Maintenance

Your replace and chimney require seasonal and monthly maintenance. It is recommended that inspection of the 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.

A Professional Chimney Sweep may be hired to clean the

rebox and chimney at least twice a year. If doing 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 ue, unscrew the four screws

that hold it in place. For cleaning access from below, open the

damper in the rebox. It is best to use a exible handle chimney

cleaning brush made especially for the job.

Because of soot and creosote build-up, it is recommended

that the replace and chimney cleaning be done twice a year.

In colder climates, cleaning should be done more often.

Before performing maintenace on your replace make sure you shut o󰀨 gas and electrical connections and allow the replace

to cool completely.

Use only solid fuel in your replace. You may use a natural or LP gas log lighter as a method to start your wood re.

The Chimney Damper must be in the OPEN position whenever

there is heat in the 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 1:00 p.m. to 5:00

p.m. (Pacic Standard Time) at: (800)-345-7078.

If your replace system has any o󰀨set chimney sections, start cleaning with the exible brush from the top of the section downward to the elbow. Then clean from the rebox up to the o󰀨set/return section. Make sure to cover the oor of the 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!

Never use any chemical cleaners when cleaning the chimney

system since their residue may cause a re hazard.

During heating season as you conduct your monthly inspection

of the rebox and chimney, be sure to also check the outside of the chimney, metal ashing and weather seals that surround it. If you nd any cracks or openings around screws or nails, seal

them to avoid any roof or chimney chase leaks.

AppendixI

)

OR LOCATION OF

Basement

See Section R402.2 for maximu

(f’

used to

d,e,f

3,000

3,500

,shall be as

f’

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

mcementitious materials content.

CONCRETE CONSTRUCTION

TABLE R402.2 MINIMUM SPECIFIED COMPRESSIVE STRENGTH OF CONCRETE

For installations regulated by the International Residential Code, the

required in Table R402.2 of the International Residential Code (IRC). Concrete subject to moderate or severe weathering as indicated

in Figure R301.2(3) of the International Residential Code (IRC) shall be air entrained as specified in TableR402.2ofthe International

consist of aminimum of6inchesthick reinforced concrete slab. The minimum specified compressive strength of

Residential Code (IRC). The maximum weight of fly ash, other pozzolans, silica fume, slag or blended cements that is included in

produceconcrete and testingthereofshall comply with theapplicable standards listed in Chapter 3 of ACI 318.

shall not exceed the percentages of the total weight of cementitious materials specified in Section 4.2.3 of ACI 318. Materials

concrete mixtures for garage floor slabs and for exterior porches, carport slabs and steps that will be exposed to deicingchemicals

For installations regulated by the International Building Code (IBC), the support foundation for the fireplace installed on concrete

shall consist of a minimum of 6 inches thick reinforced concrete slab. The concrete strength and durability shall comply with Sections

accordance with Footnote d.

7 percent.

walls, foundationwalls, exterior walls and other vertical concrete

TYPE

1903, 1904 and 1905 of the International Building Code (IBC).

Basement walls, foundations and other concrete not exposed to theweather 2,500 2,500 2,500

Basement slabs and interior slabs on grade, except garage floor slabs 2,500 2,500 2,500

Porches, carport slabs and steps exposed to the weather, and garage floor slabs2,500 3,000

work exposed to the weather

c. Concrete in these locationsthatmay be subject to freezing and thawing during construction shall be air-entrained concrete in

a. Strengthat28dayspsi.

b. SeeFigureR301.2(3) forweathering 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 percentis permitted if the specified compressive strength of the concrete is increased to not less than 4,000 psi.

f. For garagefloorswith a steel troweled finish, reduction of thetotal air content (percent by volume of concrete) to not less than

Appendix II

FIGURE R301.2(3) WEATHERING PROBABILITY MAP FOR CONCRETE

a. Alaska and Hawaii are classied as severe and negligible, respectively.

b. Lines dening areas are approximate only. Local conditions may be more or less severe than indicated by region classication. A severe classication is

where weather conditions result in signicant snowfall combined with extended periods during which there is little or no natural thawing causing deicing

salts to be used extensively.

Lifetime Limited Warranty

MASON-LITE FIREPLACE

Masonry Fireplaces Industries, LLC (MFI) warrants all Mason-Lite Fireplaces to be free from defects in materials that adversely aect replace performance for the lifetime of the product from the date of purchase, subject to the terms and conditions of this limited warranty.

MFI does not warrant accessory chimney, outside air ducts and devices not manufactured by MFI.

This warranty covers only products manufactured by MFI, specically the modular concrete 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 aect drafting, smoking, and sooting and MFI cannot guarantee these aspects of performance.

Coverage under this warranty is subject to the following conditions and exclusions:

• This warranty is null and void when the replaces are not installed pursuant to the installation instructions provided by MFI or local building codes have not been followed completely.

• Glass is warranted against thermal breakage only and only on models that are manufactured by MFI with a glass front. On Direct Vent

models the safety glass or safety screen must be kept in front of this glass when replace is in use. Safety screen must be used

on all models when in use.

• This warranty does not apply to any component or part that shows evidence of misuse, abuse, improper installation, accident or lack of regular maintenance. MFI is not responsible for misuse or mishandling of component parts.

• This warranty does not apply to any damage sustained to the appliance while in transit.

• Neither MFI, nor any aliate thereof, is responsible for any labor costs or indirect costs incurred for the replacement of defective components. Any covered component that, in our judgment, is defective shall be repaired, replaced or refunded at MFI’s option.

• Nothing in this warranty makes MFI, or any aliate thereof, liable in any respect for any injury or damage to the building or structure

in which the replace has been installed or to the persons or property therein arising out of the use, misuse, or installation of properly

manufactured MFI products.

• The replace must be used in accordance with operating instructions. The grate or andirons must be installed when using the replace.

NEITHER MFI, NOR ANY AFFILIATE THEREOF, SHALL 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. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.

If a component is found to be defective under the terms of this warranty, the party this warranty is extended to shall notify MFI, 6391 Jurupa Ave., PO Box 4338, Riverside, CA 92514 in writing, by registered mail, within thirty (30) days following the discovery of the

defect within the lifetime warranty period. The letter shall include proof of purchase and state the (1) date of purchase, model number and serial number ; (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.

This warranty applies only to those replaces installed in the continental United States, Alaska and Canada. If any part of this warranty is found to be unenforceable, the remaining parts shall remain in force and eect.

THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ALL OTHER WARRANTIES, TERMS OR CONDITIONS, EXPRESS OR IMPLIED EITHER IN FACT OR BY OPERATION OF LAW. MFI HEREBY DISCLAIMS ALL GUARANTEES AND WARRANTIES, EXPRESS OR IMPLIED, BEYOND THE WARRANTIES SET FORTH HEREIN, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.

Revision date: 1/29/2015

MASONRY FIREPLACE INDUSTRIES, LLC

6391 Jurupa Ave., Riverside, California 92514

Telephone (800) 345-7078 Fax (951) 588-8046

Masonry Fireplace Industries, LLC

6391 Jurupa Ave., Riverside, CA 92504

Mason-Lite Masonry Firebox, MFP-39, MFP-44, MFP-49, MFP-63 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual