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26D4720

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) screws along the front edge of the baseplate. 

Remove four (4) screws which secure the baseplate to the combustion casing (two at rear and one along each side). 

Replace baseplate prior to connecting gas line to heater. Consult heater installation and operating instructions for correct 

installation of the heater into the fi rebox.
The 

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"  gas  line  may  enter  either  from  the  left  side  or  right  side  of  the  fi rebox.  Gas  access  holes  are  provided  on 

both sides of the fi rebox.
Install a 

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" gas line through the hole provided in the fi rebox. Outside the fi rebox, the gas line connects to a gas shut-off valve 

recessed fl ush into the wall or fl oor. The valve should be controlled by a removable valve key for safety.
An ANSI  approved  manual  shut-off  valve,  union  and  plugged 

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8

"  NPT  pressure  tapping  point  must  be  installed 

upstream of the heater.
A sediment trap may be upstream of the heater to prevent moisture and contaminants from passing through trap to the heater 

controls and burners. Failure to do so could prevent the heater from operating reliably. Consult applicable codes.
An external regulator must be used on all propane / L.P.G. heaters, in addition to the regulator fi tted to the heater, 

to reduce the supply tank pressure to 13" w.c. (maximum). Any copper tubing used to supply propane / L.P.G. from 

the tank must be internally tinned. 

Note: When connecting propane / L.P.G. vent-free room heaters, you must use pipe sealant resistant 
to propane / L.P.G.

Important: Hold heater regulator with a wrench to prevent movement when connecting to inlet piping.

Check gas type: The gas supply must be the same as stated on the heater’s rating plate. If the gas supply 
is different, DO NOT INSTALL THE HEATER. Contact your dealer for the correct model.

After completing connection, test all gas joints from the gas meter to the gas heater regulator for leaks. Using soap and 

water solution or a gas sniffer. DO NOT USE AN OPEN FLAME.

Plumbing connections should only be performed by a qualifi ed, licensed plumber. 

Main  gas  supply  must  be  off  when  plumbing  gas  line  to  fi replace  or  performing 

service.

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Connecting directly to an unregulated 
propane  /  L.P.G.  tank  can  cause  an 
explosion.

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Do not connect directly to natural gas 1/2 PSI or 2 PSI systems. Always make sure 
natural gas pressure is regulated 10.5 w.c. (maximum before operating the unit). 

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Summary of Contents for MCUF36

Page 1: ...WARNINGS If the information in this manual is not followed exactly a fire or explosion may result causing property damage personal injury or loss of life Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your buildin...

Page 2: ...ternal Dimensions 6 Minimum Hearth Dimensions 7 Location of Fireplace 7 Clearances and Height Requirements 8 Fireplace Framing 10 Gas Line Installation 12 Canopy Installation 13 Other Optional Equipment 14 Forced Air Kit 14 Brass or Chrome Trim 14 Firebrick 14 Optional Wide Canopy 14 Illustrated Parts Breakdown 15 Warranty Back Cover ...

Page 3: ...TANT Read these instructions carefully before installing or trying to operate a vent free gas heater in this firebox IMPORTANT SAFETY INFORMATION 1 Due to high temperatures the appliance should be located out of traffic and away from furniture and draperies 2 Children and adults should be alerted to the hazard of high surface temperature and should stay away to avoid burns or clothing ignition 3 You...

Page 4: ...d be reduced 4 percent for each 1 000 feet above sea level Refer to the National Fuel Gas Code 21 The appliance and its appliance main gas valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1 2 psig 3 5 kPa 22 The appliance must be isolated from the gas supply piping system by closing its equipment shutoff valve du...

Page 5: ...anopy 5 Two 2 nuts and bolts for grate 3 Installation and Operating Instructions WHAT YOU WILL NEED FOR INSTALLATION TOOLS BUILDING SUPPLIES Phillips screwdriver Square Framing materials Hammer Piping complying with local codes Wall finishing materials Saw and or sabersaw Tee joint Caulking material noncombustible Level Pipe wrench Fireplace surround materials noncombustible Measuring tape Pliers E...

Page 6: ...ing 2 Field wire main power supply to models with fan kit Electrical connections should only be performed by an experi enced licensed certified tradesman 3 Plumb gas line Gas connections should only be performed by an experienced licensed certified tradesman 4 Install vent free gas log heater per the instructions provided with the vent free gas log heater 5 Complete finish wall material surround and ...

Page 7: ...ns ceiling fans return air registers for forced air furnaces air conditioners windows or doors Installation must provide adequate ventilation and combustion air DO NOT INSTALLTHIS FIREBOX IN A BED ROOM OR BATHROOM Location should be out of high traffic or windy or drafty areas DO NOT INSTALLWHERE CURTAINS FURNITURE CLOTHING OR OTHER FLAMMABLE OBJECTS ARE LESS THAN 42 FROM FRONT OF HEATER Never obst...

Page 8: ... to follow these requirements may create a fire hazard 1 Sidewall clearances The clearance from the inside of the appliance to any combustible wall should not be less than 9 See Figure 4 2 Ceiling clearance The ceiling must be at least 42 from the top of the firebox opening See Figure 4 3 Back wall clearnace The appliance may be placed against a combustible back wall Figure 4 Clearance and Height Re...

Page 9: ... flooring mate rial such as carpeting or asphalt tile which is closer than 14 to the base of the firebox See Figure 6 Or The inner chamber firebox floor may be installed nearer to the floor if a minimum of 14 of noncombustible material such as slate or marble is installed between the base of the firebox and the combustible flooring See Figure 7 Figure 5 Mantel Clearances Figure 6 Minimum Clearance above ...

Page 10: ...led directly on carpeting tile or other combustible material other than wood flooring the firebox shall be installed on a metal or wood panel extending the full width and depth of the enclosure MCUF36 MCUF42 A 411 4 471 4 B 431 2 431 2 C 301 2 361 2 D 151 4 181 4 E 711 2 771 2 F 353 4 383 4 G 21 21 H 501 2 551 2 MCUF36 MCUF42 47 43 36 18 77 38 G 21 21 55 A 41 B 43 C 30 D 15 E 71 F 35 G 21 21 H 50 Fi...

Page 11: ...suitable fasteners See Figure 13 5 The canopy must be installed for safe operation of the heater See page 13 for canopy installation details When finishing a custom cabinet mantel or other built in enclosure the opening size to accommodate the fireplace with trim installed is as follows Figure 12 Custom Cabinet Figure 13 Location of Nailing Flanges Nail Sides Through Nailing Flanges The fireplace mus...

Page 12: ...rom passing through trap to the heater controls and burners Failure to do so could prevent the heater from operating reliably Consult applicable codes An external regulator must be used on all propane L P G heaters in addition to the regulator fitted to the heater to reduce the supply tank pressure to 13 w c maximum Any copper tubing used to supply propane L P G from the tank must be internally tin...

Page 13: ...the side frames See Figure 14 2 Align the canopy with the holes in the top frame 3 Replace the screws previously removed 4 Tighten side screws Make sure the canopy is level and secure The firebox canopy must not be modified or replaced with a canopy that may be provided with the unvented decorative room heater WARNING Close fireplace screen panel before operating a decorative type unvented room heat...

Page 14: ...NG Any of the original wire as supplied with the fireplace must be replaced Contact dealer for proper replacement wiring harness see parts list for part number 120 volts 60Hz 1 amps Electrical power cord plug can be routed to exit the MCUF36 MCUF42 on either the left side or the right side Remove cord protector from side of unit route power cord through hole opposite side Reinstall cord protector T...

Page 15: ...RC42 1 Wide Brass Canopy 1 BRC36 BRC42 1 Wide Brass Canopy 1 BRC36 BRC42 4 Blower w Rheostat 1 BLOTM BLOTM 4 Blower w Rheostat 1 BLOTM BLOTM 4 Blower w Rheostat 1 BLOTM BLOTM 4 Blower w Rheostat 1 BLOTM BLOTM 4 Blower w Rheostat 1 BLOTM BLOTM 5 Brass Trim Curved Design 1 BRTKM36 BRTKM42 5 Brass Trim Curved Design 1 BRTKM36 BRTKM42 5 Brass Trim Curved Design 1 BRTKM36 BRTKM42 5 Brass Trim Curved De...

Page 16: ... in accordance with the installation instructions The Limited Lifetime Warranty will also be void if the appliance is not operated and maintained according to the operating instructions supplied with the appliance and does not extend to 1 firebox burner assembly damage by accident neglect misuse abuse alteration negligence of others including the installation thereof by unqualified installers 2 the ...

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