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26D4720 

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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 fi re-

box enclosures for gas-fi red unvented decorative room 

heaters.

11.  Do not install heater in a bathroom or bedroom.
12.  Correct installation of the ceramic fi ber logs, proper 

location of the heater, and annual cleaning are necessary 

to  avoid  potential  problems  with  sooting.  Sooting, 

resulting  from  improper  installation  or  operation, 

can  settle  on  surfaces  outside  the  fi replace.  See  log 

placement instructions for proper installation.

13.  Avoid any drafts that alter burner fl ame patterns. Do not 

allow fans to blow directly into fi replace. Do not place 

a blower inside burn area of fi rebox. Ceiling fans may 

create drafts that alter burner fl ame patterns. Sooting 

and improper burning will occur.

14. 

Caution:

  Candles,  incense,  oil  lamps,  etc.  produce 

combustion  byproducts  including  soot.  Vent-free 

appliances  will  not  fi lter  or  clean  soot  produced  by 

these types of products. In addition, the smoke and/or 

aromatics  (scents)  may  be  reburnt  in  the  vent-free 

appliance which can produce odors. It is recommended 

to minimize the use of candles, incense, etc. while the 

vent-free appliance is in operation. 

15.  An unvented gas-fi red heater uses air (oxygen) from the 

room in which it is installed. Provisions for adequate 

combustion and ventilation air must be provided. See 

installation guidelines. 

INSTALLER

Please leave these instructions with the owner.

OWNER

Please retain these instructions for future reference.

IMPORTANT

Read these instructions carefully before installing or trying to operate a vent-free gas heater in this fi rebox. 

IMPORTANT SAFETY INFORMATION

  1.  Due to high temperatures, the appliance should 

be located out of traffi c 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.  Young  children  should  be  carefully  supervised 

when they are in the same room with the apli-

ance. 

  4.  Do not place clothing or other fl ammable material 

on or near the appliance. 

  5.  Any safety screen or guard removed for servicing 

an appliance, must be replaced prior to operating 

the heater.

  6.  Installation and repair should be done by a qualifi ed 

service person.

  7.  To prevent malfunction and/or sooting, an unvented 

gas heater should be cleaned before use at least 

annually by a professional service person. More 

frequent cleaning may be required due to exces-

sive lint from carpeting, bedding material, etc. It is 

imperative that control compartments, burners and 

circulating air passageways be kept clean.

8.

  

CARBON MONOXIDE POISONING:

 Early signs of 

carbon monoxide poisoning are similar to the fl u with 

headaches, dizziness and/or nausea. If you have these 

signs, obtain fresh air immediately. Have the heater 

serviced as it may not be operating properly.

Continued on page 4

• Any change to this heater or its controls can be dangerous.
• Improper installation or use of the heater can cause serious injury or death from fi re, 

burns, explosion or carbon monoxide poisoning.

• Do  not  allow  fans  to  blow  directly  into  the  fi replace.  Avoid  any  drafts  that  alter 

burner fl ame patterns.

• Do not use a blower insert, heat exchanger insert or other accessory, not approved 

for use with this heater where applicable.

W

ARNING

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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