Majestic 36MCUFD SERIES Installation And Operating Instructions Manual

Manual is about: UNVENTED VENT-FREE FIREBOXES

Summary of 36MCUFD SERIES

  • Page 1

    For use with a listed gas-fired unvented decorative room heater not to exceed 40,000 btu/hr. Do not build a wood fire. Read and save these instructions warnings if the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss ...

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    26d4750 contents important safety information ................................. 3 product features ......................................................5 before you start .....................................................5 general installation information .............................6 firebox d...

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    26d4750 9. The installation must conform with local codes or, in the absence of local codes, with the national fuel gas code, ansi z223.L/nfpa54. 10. This unit complies with ansi z21.91.2001 ventless fire - box enclosures for gas-fired unvented decorative room heaters. 11. Do not install heater in a...

  • Page 4

    4 26d4750 important safety information continued from page 3 16. Keep room area clear and free from combustible materi- als, gasoline and other flammable vapors and liquids. 17. Unvented gas heaters are a supplemental zone heater. They are not intended to be a primary heating appli- ance. 18. Unvent...

  • Page 5

    26d4750 5 the 36mcufd and 42mcufd series are vent-free fireboxes. They feature a self contained heat-circulating system. This installation manual will enable you to obtain a safe, efficient and dependable installation of your vent-free firebox. Do not alter or modify the firebox or its components un...

  • Page 6

    6 26d4750 in planning the installation for the appliance it is necessary to determine where the unit is to be installed and whether optional accessories are desired. Gas supply piping should also be planned. The following steps represent the normal sequence of installation. Each installation is uniq...

  • Page 7

    26d4750 7 36mcufd-f 36mcufd-r 42mcufd-f 42mcufd-r a 6 1 / 4 " 5 / 4 " 1 / 4 " 1 / 4 " b 15" 14 / 4 " 15" 14 / 4 " c 5 / 8 " 1 / 8 " 8 5 / 8 " 8 1 / 8 " d 5" 5" 5" 5" e 0 1 / " 0 1 / " 0 1 / " 0 1 / " minimum hearth dimensions general installation information and location of firebox figure 2 - minimu...

  • Page 8

    8 26d4750 6" minimum 42" minimum 6" minimum ensure that minimum clearances shown in figures 4 through 7 are maintained. Left and right clearances are determined when facing the front of the firebox. Follow these instructions carefully to ensure safe installation. Failure to follow these requirements...

  • Page 9

    26d4750 9 1" 10" 8" 6" 1 / " 1" 16" 19" 1" " 5. Mantel clearances: the canopy supplied with the unit must be installed. If a combustible mantel is installed, it must meet the clearance requirements as shown in figure 7a . However, if lower mantel height is desired, see page 15 and figure 7b. Figure ...

  • Page 10

    10 26d4750 h g d f e a c b a 8 1 / 4 " 1 / 2 "- 5 / 8 " c a g c g a ½"-⅝" fireplace framing firebox framing can be built before or after the appliance is set in place. Construct firebox framing following figures 9 through 12 and the chart below for your specific installation requirements. See figure...

  • Page 11

    26d4750 11 k j fireplace framing 36mcufd mcuf42 with trim with trim k 4" 47 / 4 " j 8 1 / 8 " 8 1 / 8 " 1. Bend out the nailing flanges located on each side of the firebox. 2. Slide the firebox into prepared framing or position firebox in its final position and frame later. 3. Level the firebox by c...

  • Page 12

    1 26d4750 gas line installation consult all local codes. All gas piping must be installed to comply with local codes, or in the absence of local codes, with the latest edition of the national fuel gas code ansi z223.1/nfpa54. Remove the baseplate for ease of gas line installation. Remove three (3) s...

  • Page 13

    26d4750 1 canopy installation installing canopy a canopy is furnished with each firebox and must be installed for safe operation. See figure 15. 1. Remove the three (3) screws from the top front frame assembly. Also remove the two (2) screws on the side frames. See figure 15. 2. Align the canopy wit...

  • Page 14

    14 26d4750 thermostat control fan switch off on black white green 110/115 v.A.C. Black blower motor optional equipment forced air kit (blotmc) if you are installing the forced air kit, model blotmc, on 36mcufd or 42mcufd models, see the installation instructions provided with the kit for electrical ...

  • Page 15

    26d4750 15 1 4 5Ê 2 3 *not illustrated, see following page. Illustrated parts list item description qty 36mcufd 42mcufd 1 canopy 1 71d0500 71d1000 screen panel 6d456 6d456 screen rod 6d01k 6d01k accessories in kits 1 standard brass canopy 1 brcu6 brcu4 1 wide brass canopy 1 brc6 brc4 4 blower w/ rhe...

  • Page 16

    16 26d4750 using optional ak-4 outside air kit 8'max. Combustion air 1. Locate combustion air assembly at an exterior location which is not likely to be accidentally blocked in any manner. Locate assemblya min. Of 12" above the snow line to prevent blockage by snow accumulation. 2. Never mount the c...

  • Page 17

    26d4750 17 using optional ak-4 outside air kit the use of outside air for combustion is optional unless required by building codes. It is only necessary to supply outside combustion air to one side of the fireplace. Use the model ak4 combustion air kit. Model ak-4 combustion air assembly 1. Remove t...

  • Page 18

    18 26d4750 model ak-4 combustion air assembly (continued) 7. If the duct is the insulated type, push the insulation back from one end of the duct approximately 2". See figure 24. 8. Slip the exposed end of the duct over the starting collar on the fireplace . 9. Using the sheet metal screws provided,...

  • Page 19

    26d4750 19 limited lifetime warranty policy the following components are warranted for life to the original owner, subject of proof of purchase: firebox, combustion chamber, heat exchanger, grate, and stainless steel burners. Five year warranty the following components are warranted for 5 years to t...

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    August 2008 26d4750 • rev. 9 mhsc 149 cleveland drive • paris, kentucky 4061 www.Mhsc.Com.