Mason-Lite MFP-33 Manual Download

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What You Will Need

You will find 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 fireplace 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

firebox. 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 fireplace that will not be plumb or level.

Use wood shims instead.

You will find 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.

Summary of Contents for MFP-33

Page 1: ...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 flammable vapors and liquids in the vicinity of this or any other appliance REV OCT 201...

Page 2: ...THIS PAGE INTENTIONALLY BLANK ...

Page 3: ...T REMOVE THIS LABEL WARNING Use only approved listed Chimney Pipe as follows MFP33 39 44 UL103 12 Class A DM12 12 FMI 12 chimneys MFP49 UL103 14 Class A Please refer to pipe manufacturer s installation instructions Chimney Height Max 40 ft Min 14 ft 17 ft with 1 or 2 offset sections maximum WARNING THIS FIREPLACE HAS NOT BEEN TESTED WITH AN UNVENTED GAS LOG SET TO REDUCE THE RISK OF FIRE OR INJURY...

Page 4: ...s Non Combustible Floor Systems 3 7 14 2 13 8 4 9 5 6 15 21 16 12 1 10 11 1 11 19 25 5 14 15 13 17 10 18 20 12 9 17 2 21 16 3 4 6 7 8 A 24 22 SCALE 1 8 DETAIL A 23 See Page 16 thru 18 for combustible floor and framing anchoring illustrations Figure 2 Figure 1 ...

Page 5: ...P33 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 12 INCH DAMPER ANCHOR PLATE 1 16 NOT SUPPLIED ANCHOR PLATE INSULATION 1 17 MFP4 AK OUTSIDE AIR KIT 4 DIA 1 18 MFPB33 METAL BASE 6 INCH HIGH 1 19 NOT SUPPLIED CEMENT BOARD 1 20 MFPSB ASSY FLOOR JOIST BRA...

Page 6: ...tems Non Combustible Floor Systems 20 DETAIL A 21 SCALE 1 8 22 18 3 1 11 12 10 3A 8 13 9 4 6 7 19 6B 5 6A 2 14 3 14 17 1 6A 4 6B 7 12 13 16 19 9 8 5 10 6 3A 11 2 15 A Figure 3 Figure 4 See Page 16 thru 18 for combustible floor and framing anchoring illustrations ...

Page 7: ... 1 6A MFP39 6A MFP44 6A MFP49 6A LINTEL FRONT 1 6B MFP39 6B MFP44 6B MFP49 6B T BAR 1 7 MFP39 7 MFP44 7 MFP49 7 DOME SIDE LOWER 2 8 MFP39 8 MFP44 8 MFP49 8 DOME SIDE UPPER 2 9 MFP39 9 MFP44 9 MFP49 9 DOME TOP Ø12 DOME TOP Ø12 DOME TOP Ø14 1 10 MFP39 10 MFP44 10 MFP49 10 DOME FRONT REAR MIDDLE 2 ITEM P N DESCRIPTION QTY 11 MFP521 RATING PLATE 1 12 NOT SUPPLIED ANCHOR PLATE 1 FIBERGLASS INSU LATION ...

Page 8: ...5 2 15 8 14 11 9 8 13 1 20 4 14 3 3A 10 18 2 19 16 1A 17 15 6 5 12 7 2 A See Page 16 thru 18 for combustible floor and framing anchoring illustrations MFP 63 Fireplace Parts Diagrams Combustible Floor Systems Non Combustible Floor Systems Figure 6 Figure 6 ...

Page 9: ...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 Ø16 DAMPER ANCHOR PLT 14 NOT SUPPLIED INSULATION BLANKET 15 MFP4 AK 4 INCH DIA OUTSIDE AIR KI...

Page 10: ...is on combustible floor the total fireplace height will increase 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 2 inch minimum clearance to combustibles from the Dome Top must be maintained Note MIN 46 68 1 2 9 1 2 B B A A SECTION B B 38 1 8 30 1 4 15 4 1 2 35 7 3 4 3 7 3 4 SECTION A A 67 63 62 52 1 2 23 7 21...

Page 11: ... combustibles from the Dome Top must be maintained Note If your installation is on combustible floor the total fireplace height will increase due to the addition of the required metal platform SECTION J J REFRACTORY LINING NOT SHOWN B C 4 1 4 10 A 4 E 23 Fireplace Overall Dimensions MFP 39 44 49 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...

Page 12: ...gure 11 WARNING Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this appliance may result in property damage or personal injury Fireplace Framing Dimensions Model W MFP 33 41 MFP 39 47 MFP 44 52 MFP 49 57 MFP 63 71 MAINTAIN THE 2 CLEARANCE TO COMBUSTIBLES ABOVE THE DOME DO NOT ATTACH COMBUSTIBLE MATERIALS ON TOP OF THE DOME 1 ...

Page 13: ...ion You will note that there will be a gap between the fireplace front and the extension of the non combustible hearth material Be certain that you seal this with non combustible material 1 8 MIN 2 MIN 2 MIN 8 MIN 1 0 MIN 8 MIN 1 0 MIN NON COMBUSTIBLE FACING MATERIAL HEARTH EXTENSION Not provided as part of fireplace NON COMBUSTIBLE Not provided as part of fireplace or sold by MFI A MINIMUM CLEARA...

Page 14: ...E TO COMBUSTIBLES SECTION A A DET C MAINTAIN 2 CLEARANCE TO WOOD FRAMING MAINTAIN 2 CLEARANCE TO WOOD FRAMING METAL PLATFORM H3 METAL PLATFORM H3 NON COMBUSTIBLE FLOOR H2 1 2 CEMENT BOARD 1 2 CEMENT BOARD H5 1 INCH THICK CERAMIC FIBER INSULATION BLANKET FLOOR JOIST BRACE 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 ...

Page 15: ...sonry Fireplace is a modular refractory masonry unit designed for field assembly The firebox 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 fireplace In addition to the basic enclosure a standard 1 1 8 thick high temperature refractory brick is require...

Page 16: ...gth of the floor on which it rests Chimney system measurements Choice of materials and craftsmanship in fireplace and hearth finishing Figure 16 Typical Installations Internal Wall Installation Corner Installation Flush 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 goi...

Page 17: ... intended as a supplemental heat source only It is not intended as a primary heat source 3 It is the responsibility of the contractor installer not the manufacturer to ensure that adequate combustion air is provided for proper function of this fireplace Fireplaces take up a large volume of replacement air from outside the house and if the house is of airtight construction smoke spillage may occur ...

Page 18: ...ote that additional floor joists may be required to support the weight of the firebox and chimney Where the floor joists run parallel to the front of the firebox anchorage can be accomplished in like manner as shown in Figure 18 using blocking between the floor joist For floors supported by I Joists the method of anchorage is illustrated in Figures 19 and 20 Figure 23 illustrates the general arran...

Page 19: ...cations Some chimney systems can weigh up to 50 lbs per lineal foot Table II Deflection Limits Construction L S or W D L1 Floor Members I 360 I 240 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 deflection resulting from L 0 5D is permitted to be substituted for the deflection resulting from L D Note that M...

Page 20: ...o 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 6 Metal Base MFP 33 39 44 49 The Mason Lite Metal Base ensures the minimum six inch clearance above combustible flooring...

Page 21: ... 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 re...

Page 22: ...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 7 Keep the assembly of the next sections of the firebox side walls moving up keeping components moist mixing mortar as you need it and threading the mo...

Page 23: ...ctions 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 filled Make any adjustments to the fireplace align...

Page 24: ...face lines up with the inward angles of the lintel sides Resulting top surfaces should be level 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 filled Make any adjus...

Page 25: ...o the remaining Hearth except this time apply beading on surface to be facing floor as shown in Figure 42 26 Before installing side walls confirm 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...

Page 26: ...he base plate Once leveled fill any resulting gaps with mortar Important Adjustments can only be made while the mortar is still wet when correcting for squareness and leveling 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 34 Position Middle Domes MFP63 10 so that outer faces are flush to the lo...

Page 27: ... Dome Top MFP63 9 into position Be sure that it is flush 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 offset closest to the rear of the fireplace see Figure 52 Figure 52 Center of Ø16 chimney hole is offset towards the rear 10 12 1 2 MFP 63 39 Now that you have completed th...

Page 28: ...ection If using Masonry Chimney consult your local codes Figure 56 Optional Damper Support Sides Optional Damper Plate by others Optional Damper Support Rear Attention Clearance to combustible construction cannot be reduced during course of construction For the safe operation of the finished fireplace these clearances must be followed when building the framework for the chimney system Note that th...

Page 29: ... firebrick may crack see Figure 60 The pattern for the firebrick 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 certified mason to lay in the brick He will follow the proper instructions from the fireplace liner manufacturer and also understand the ty...

Page 30: ...d MFI cannot be responsible for the make up of material on the exterior of the fireplace you have chosen nor can MFI be held responsible for the materials in a room that may be responding negatively to heat However in almost all cases there is a solution to the problem either by making adjustments to airflow or the modifications to the room itself Installing Outside Air The Mason Lite Fireplace ne...

Page 31: ...ﬁll the chimney enclosure LINEAL GAIN PART NO DESCRIPTION GAIN Mason Lite Fireplace 66 1 2 12 12DM Pipe Section 10 5 8 12 12HT 18 12DM Pipe Section 16 5 8 18 12HT 24 12DM Pipe Section 23 5 8 24 12HT 36 12DM Pipe Section 34 5 8 36 12HT 48 12DM Pipe Section 46 5 8 48 12HT RLT 12D Round Termination 7 3 4 RLT 12HT STL 12D Square Chase Top with Slip Section 7 to 15 The lineal gain for the terminations ...

Page 32: ...in the fireplace under any circumstances First Lighting of the Mason Lite After construction is completed all elements of the fireplace and chimney system must be completely dry This means that the unit must stand without any firing for a minimum of 28 days Only after that period of time can a first lighting take place The first fire must be small and well controlled started with a small amount of...

Page 33: ...the top of the section downward to the elbow Then clean from the firebox up to the offset return section Make sure to cover the floor of the fireplace 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 resid...

Page 34: ...oncrete slab The concrete strength and durability shall comply with Sections 1903 1904 and 1905 of the International Building Code IBC TABLE R402 2 MINIMUM SPECIFIED COMPRESSIVE STRENGTH OF CONCRETE MINIMUM SPECIFIED COMPRESSIVE STRENGTH a f c Weathering Potential b TYPE OR LOCATION OF CONCRETE CONSTRUCTION Negligible Moderate Severe Basement walls foundations and other concrete not exposed to the...

Page 35: ...ely b Lines defining areas are approximate only Local conditions may be more or less severe than indicated by region classification A severe classification is where weather conditions result in significant snowfall combined with extended periods during which there is little or no natural thawing causing deicing salts to be used extensively ...

Page 36: ...n this warranty makes MFI or any affiliate thereof liable in any respect for any injury or damage to the building or structure in which the fireplace has been installed or to the persons or property therein arising out of the use misuse or installation of properly manufactured MFI products The fireplace must be used in accordance with operating instructions The grate or andirons must be installed ...

Page 37: ...Masonry Fireplace Industries LLC 6391 Jurupa Ave Riverside CA 92504 ...

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