Monessen Hearth MCUF42D SERIES manuale d’uso

For use with a listed gas-fired unvented decorative room heater not to exceed 40,000 BTU/hr . Do not build a wood fi re. READ AND SA VE THESE INSTRUCTIONS W ARNINGS If the information in this manual is not followed exactly , a fi re or explosion may result causing property damage, personal injury or loss of life. – Do not store or use gasoline [...]

2 26D4720 CONTENTS Important Safety Information ................................. 3 Product Features ......................................................5 Before Y ou Start .....................................................5 General Installation Information .............................6 Firebox Dimensions .....................................[...]

26D4720 3 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 bathroom or bedroom. 12. Correct installation of[...]

4 26D4720 IMPORT ANT SAFETY INFORMA TION 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. Unvented gas heaters emit moisture into the living are[...]

26D4720 5 The MCUF36D and MCUF42D 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 under any circumstances. Any modification or alterat[...]

6 26D4720 D F E H C 5.25" 32.125" 2.50" 2.50" B 26.25" 9.75" 8.25" 37.375" 6" A In planning the installation for the appliance it is necessary to determine where the unit is to be installed and whether optio nal accessories are desired. Gas supply piping should also be planned. The following steps repres[...]

26D4720 7 MINIMUM HEARTH DIMENSIONS GENERAL INST ALLA TION INFORMA TION AND LOCA TION OF FIREBOX Figure 2 - Minimum Hearth Dimensions LOCA TION OF FIREBOX Carefully select the best location for installation of your vent-free firebox. The following factors should be taken into consideration: • Clearance to side wall, ceiling, woodwork and windows.[...]

8 26D4720 6" Minimum 42" Minimum 6" Min imum 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 may create a fire hazard. 1. Side[...]

26D4720 9 12" 10" 8" 6" 2 1 / 2 " 12" 16" 19" 21" 23" CLEARANCES AND HEIGHT REQUIREMENTS 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[...]

10 26D4720 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 1 on Page 6 for fir[...]

26D4720 11 K J FIREPLACE FRAMING MCUF36D MCUF42D with Trim with Trim K 42" 47 3 / 4 " J 38 1 / 8 " 38 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 checking the top edge of [...]

12 26D4720 GAS LINE INST ALLA TION 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) screws along the front edge of the baseplate. Re[...]

26D4720 13 CANOPY INST ALLA TION INST ALLING 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 with the holes in the top frame. 3. Replace the s[...]

14 26D4720 Thermostat Control Fan Switch OFF ON Black White Green 1 10/1 15 V .A.C. Black Blower Motor OPTIONAL EQUIPMENT FORCED AIR KIT (BLOTMC) If you are installing the forced air kit, Model BLOTMC, on MCUF36D or MCUF42D models, see the installation instructions provided with the kit for electrical wiring requirements, or the blower installation[...]

26D4720 15 1 4 5Ê 2 3 *Not illustrated, see following page. ILLUSTRA TED P ARTS LIST ITEM DESCRIPTION QTY MCUF36D MCUF42D 1 Canopy 1 71D0500 71D1000 2 Screen Panel 2 26D4562 26D45622 3 Screen Rod 2 26D0132K 26D0133K ACCESSORIES IN KITS 1 Standard Brass Canopy 1 BRCU36 BRCU42 1 Wide Brass Canopy 1 BRC36 BRC42 4 Blower w/ Rheostat 1 BLOTMC BLOTMC 5 [...]

16 26D4720 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 assembly a min. of 12" above the snow line to prevent blockage by snow accumulation. 2. Never mount the combustion air inlet assembly in a gara[...]

26D4720 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 fi replace. Use the model AK4 combustion air kit. MODEL AK-4 COMBUSTION AIR ASSEMBL Y 1. Remove the cover plate from the 4" outlet opening [...]

18 26D4720 MODEL AK-4 COMBUSTION AIR ASSEMBL Y (CONTINUED) 7. If the duct is the insulated type, push the insulation back from one end of the duct approximately 2". See Figur e 24. 8. Slip the exposed end of the duct over the starting collar on the fi replace . 9. Using the sheet metal screws provided, secure the duct end to the collar attach[...]

26D4720 19 NOTES[...]

JUNE 2008 P/N 26D4720 • Rev . 7 MONESSEN HEARTH SYSTEMS LIMITED LIFETIME W ARRANTY 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 W ARRANTY The following components are warranted for 5 years to th[...]