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Installing the Gas Fireplace 

 

WARNING:

 THIS FIREPLACE HAS NOT BEEN TESTED  

 

FOR USE WITH AN UNVENTED GAS LOG 
SET.  TO  REDUCE  THE  RISK  OF  FIRE  OR 
INJURY,  DO  NOT  INSTALL  AN  UNVENTED 
GAS LOG SET INTO FIREPLACE. 

 

WARNING:

  THIS  FIREPLACE  HAS  BEEN  TESTED  FOR  

 

USE  WITH  OPTIONAL  GLASS  DOORS: 
CROWN-BRECKINRIDGE  OR  MCKENZIE- 
PENDELTON ONLY. 

 

WARNING: 

Install  only  approved,  12"  B-vent  or  listed  UL  103-12

” I.D. 

Class A Chimney System. 

Chimney maximum height: 40 feet 

Chimney minimum height: 14 feet (with offset = 17 feet) 
2 offsets maximum. 

 

Important: 

Follow the chimney pipe manufacturer

’s  

instructions on the installation of their specific flue system. 

 

GUIDELINES FOR USE 

All  current  and  future  users  of  Mason-Lite

™  Fireplaces 

are  charged  with  the  responsibility  for  full  knowledge  of  the 
information contained within this manual which includes: 

•   Strict requirements for assembly. 
•   Detailed instructions for installation. 
•   Cautionary guidelines for use. 
•   On-going maintenance instructions. 

 
It  is  the  responsibility  of  the  distributor,  subcontractor  and/  
or  the  general  contractor  -  whoever  shoulders  the  liability  
for installation of this product  - to see to it that the work is  
in  complete  compliance  with  the  guidelines  and  instructions  
in  this  manual.  Note  that  the  general  contractor  is  the  party  
accountable  for  seeing  that  adequate  clearances  are  provided  
from all firebox surfaces per specifications in this manual. 
 
DO  NOT  USE  A  FIREPLACE  INSERT  OR  OTHER 
PRODUCTS  NOT  SPECIFIED  FOR  USE  WITH  THIS 
FIREPLACE. 
 

The  Mason-Lite™  is  designed  for  use  only  with  the 
supplied gas burner system. 

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

ATTENTION: 

  A  fire  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  fireplace.  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  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 

required to line the interior of the firebox. 

These  fireplaces  are  not  intended  to  serve  as  a  primary 
heat  source,  rather,  the  fireplace  was  expressly  created  as  a 
supplemental source of heat. The unit is designed for use with 
solid fuels such as cord wood. 

 

WARNING: 

Any application other than the 

“Intended Use” as stated above  

is  in  violation  of  the manufacturer

’s instructions and is hereby  

prohibited.  Such  violation  may  cause  immediate  hazard,  
property damage or loss of life and will void all liabilities to the  
manufacturer and will void all warranties explicit or implied. 

 

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 
fireplace  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  fireplaces  may  be 
installed on either combustible or non-combustible floors. 

The Three Components of the Mason-Lite™ Fireplace: 

• 

Combustible or Non-Combustible Floor 

• 

Non-Combustible Raised Platform 

• 

MASON-LITE Firebox and Smoke Dome 

• 

12"B-vent  orUL103-12

”classA  listedchimneysystem  required.  

 

Important:

   Follow   the   chimney   pipe   manufacturer

’s 

instructions on the installation of their specific flue system. 

 

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

™ 

conventional    radiant    heat    fireplaces.    Those    instructions 
generally fall into the following categories: 

• 

Spacing  and  clearance  as  it  relates  to  combustible  

  materials.  

REV 1 - 0907231405 

L-A2-27509 

Summary of Contents for MGFPST-43

Page 1: ...is fireplace must be connected to a working flue meeting the requirements of the ANSI Z21 50 standard Solid fuels shall not be burned in this fireplace This appliance must be vented vertically through the roof This appliance is not for installation in manufactured or mobile homes The installation including provisions for combustion ventilation air and required minimum permanent vent opening must c...

Page 2: ... 15 16 16 16 16 16 17 17 17 18 19 19 19 20 20 20 20 20 20 21 21 22 22 22 22 22 22 23 23 23 23 23 23 Tested Listed By MFI 315 WEST 3RD ST SANTA ANA CA 92701 Industries LLC DATE OF MFG SERIAL No Report No TBD MODEL No MGFPST 43 GAS TYPE NG LP WARNING THIS FIREPLACE HAS BEEN TESTED FOR USE ONLY WITH APPROVED GLASS DOORS TO REDUCE THE RISK OF FIRE OR INJURY CONSULT OWNER S MANUAL THIS FIREPLACE IS DES...

Page 3: ...ting plate MFPST43 MFP16 11 4 3 Rebar Ø 3 8 x 36 MFP49 11 10 2 Dome front rear upper MFSTP 43 10 12 9 1 Dome top for 16 class A chimney MFPST 43 9 8 8 2 Dome side upper MFPST 43 8 7 2 Dome side lower MFP 43 7 6 6 2 Lintel MFP 43 6 15 3A 1 Side wall w 4 knockout MFP 43 3A 3 7 Side wall MFP 43 3 3 11 1 3A Refractory Firebox Liners Herringbone Pattern shown Also available in Running Bond MFP43STSHBL ...

Page 4: ...required up to header or top plate 1 2 MIN 0 MIN 57 I D FRAMING Fig 4 2 Framing dimensions 2 MIN 0 MIN 28 O D ZERO CLEARANCE TO COMBUSTIBLES BOTH SIDES AND BACK OF FIREPLACE 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 REV 1 0907231405 4 L A2 27509 ...

Page 5: ...it 4 1 Damper clamp 5 1 Lava Rock qty of 4 6 1 Front bottom log 30 7 1 Front bottom log 30 8 1 Top log 18 9 1 Top log 18 10 1 Top log 20 11 1 Top log 17 6 7 1 8 11 2 4 5 Photos not to scale Contact Mason lite for replacement parts and accessories as listed in these parts lists 9 10 3 REV 1 0907231405 5 L A2 27509 ...

Page 6: ...g code approvals and may cause property damage personal injury or loss of life The burner included with this gas fireplace is non convertible and only meant to be used with the gas listed on the rating plate Burner p n BTU x 1000 size top front Included in Nat LP MGFPST 43 P 90 23 45 44 55 MGFPST 43 Nominal BTU based on gas inlet pressure Nominal gas inlet pressure for natural gas is 5 W C Require...

Page 7: ...ding 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 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 ...

Page 8: ...allations Internal Wall Installation Island Installation Clearance to Combustibles The distance to be maintained from the surfaces of the fireplace to combustibles must be observed Below is a list of the most common combustible materials to name a few Drywall Wood flooring Plywood sub flooring Wood Framing Particle board Mill board Plywood paneling Maintain the following clearances Unit front side...

Page 9: ...n of the fireplace You must follow your chimney manufacturer s instructions Fireplace Heights When installed the maximum overall height of the Chimney System is 40 feet The minimum installed height of the completed Chimney System is 14 feet with a straight flue stack 17 feet if the chimney includes one or two offset sections Supporting Floor Systems It is the ultimate responsibility of the install...

Page 10: ...y the floor framing Additional floor joists or I joists may be required as determined by the licensed design professional The weights are noted in Table I for each MASON LITE unit model 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 fireplace installation As stated a...

Page 11: ...Four or more fasteners to attach metal base to floor joists 4 Mason Lite Mortar at least one 50 lb bucket two for MFP63 Tools needed for both above installations 1 One 4 level 2 Roto hammer with drill bit needed for concrete slab install only 3 Drill motor with mixer blade to mix Mason Lite Mortar 4 Two empty 5 gallon buckets to mix Mason Lite Mortar 5 One wheelbarrow and shovel to mix concrete 6 ...

Page 12: ...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 Fig 12 2 Setting Firebox sides Fig 12 3 Keep damp at all time...

Page 13: ...ssembly 17 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 be smooth and uniform Make sure connections are covered with an adequate amount of mortar Remember that you have the option of usin...

Page 14: ...n Lite Firebrick Liners screws Existing Ceiling Frame framework to house the chimney system 22 Now that you have completed the smoke dome assembly all the components should stack up for a smooth transition into the flue 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 firebrick lining and the flu...

Page 15: ...ern the proper instructions from the fireplace liner manufacturer and also understand the type of adhesive or cement he is to use Make sure the fireplace is installed with the finished firebrick floor of the fireplace so that it is at least 11 eleven inches above the combustible floor system Disclaimer Masonry Fireplace Industries wishes to express that as the manufacturer of Mason Lite Fireplaces...

Page 16: ...for outside combustible air It can go straight out through an outside wall or into a ventilated crawl space If crawl space is used check codes for proper termination 3 Be sure that you carefully check the source of the outside air before you choose the site for your air intake You don t want a place where snow will collect where bushes or trees will be growing or a location that is too close to an...

Page 17: ...ling holes into damper plate 5 Attach damper chain stop on center rear of lintel 3 three inch vertical from opening using 3 8 cement fasteners Fig 17 1 Return Return Elbow Elbow Elbow Elbow when building the framework for the chimney system Fireplace Door Accessory IMPORTANT Only Crown Breckinridge or McKenzie Pendelton Doors are approved for use with this fireplace For installation Instructions s...

Page 18: ...concrete slab The concrete strength and durability shall comply with Sections TABLE R402 2 MINIMUM SPECIFIED COMPRESSIVE STRENGTH OF CONCRETE MINIMUM SPECIFIED COMPRESSIVE STRENGTH a f c TYPE OR LOCATION OF CONCRETE CONSTRUCTION Weathering Potential b Negligible Moderate Severe Basement walls foundations and other concrete not exposed to the weather 2 500 2 500 2 500C Basement slabs and interior s...

Page 19: ...d female for the spill switch wires connection The short spill switch wire is to be routed across and into the top hole on the opposite side of the fireplace Connect the wire to the opposite baffle assembly Fig 19 1 Owner s Operation Precautions Installers of the Mason Lite are urged to call the attention of fireplace owners to the following precautions The installer should hand deliver this owner...

Page 20: ...Pilot if neccessary 1 Follow the lighting instructions to light the pilot The pilot flame should encircle the generator tip which is preset at the factory Fig 20 2 Ordinarily the pilot will not require field adjustment 2 If adjustment is necessary remove the cap screw Fig 20 1 and turn the smaller gas adjustment screw inside counterclockwise to increase the pilot flame and clockwise to decrease th...

Page 21: ...th the burner pipe Repeat for the second front log on the opposite side of the see thru burner 2 Place the top logs across the two bottom logs in the order and positions shown below Fig 21 1 Fig 21 2 8 9 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 11 1...

Page 22: ...ay lit see the Troubleshooting section Lighting and Extinguishing the Burner System To turn on your gas log set with the pilot lit turn the safety valve knob to the ON position Switch the toggle switch control to the on UP position and the gas log set will light To turn off your gas log set switch the toggle switch control to the off DOWN position The pilot will remain lit See the instructions tha...

Page 23: ...No Gas to Burner 3 Fireplace Not burning properly 4 Fireplace will not shut OFF 5 Frequent pilot outage 6 Fireplace shuts down during operation 7 Excessive soot on logs CAUSE a Pilot generator may not be producing sufficient millivoltage b Pilot flame making a blowing sound c Generator wire leads attached to the wrong terminals on the valve d Defective thermomagnetic safety in valve a Safety valve...

Page 24: ..._________ Orifice Other __________ Leak Test ___________ Burn Test ___________ Gas Type NAT PROPANE Date ___________ Model ___________ Serial ___________ Air Shutter ___________ Inspector ___________ REV 1 0907231405 24 L A2 27509 ...

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