Majestic 36MCUFD SERIES User manual

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,


         


– WHAT TO DO IF YOU SMELL GAS
  
• Do not touch any electrical switch; do not use any

  

  

       
       

MAGNUM
UNVENTED
VENT-FREE FIREBOXES
INSTALLATION AND
OPERATING INSTRUCTIONS
Carefully review the instructions

unvented room heater for the mini-

DO NOT INSTALL AN APPLIANCE
IN THIS FIREBOX UNLESS THIS
FIREBOX MEETS THE MINIMUM
DIMENSIONS REqUIRED FOR
THE INSTALLATION.
WARNINGS
If the information in this manual is not followed
       

 


– WHAT TO DO IF YOU SMELL GAS
  
• Do not touch any electrical switch; do not use

       
     
instructions.
  

       
       

WARNINGS
MODELS: 36MCUFD, 42MCUFD SERIES

2 26D4750
CONTENTS
 ................................. 3
Product Features......................................................5
Before You Start.....................................................5
General Installation Information .............................6
Firebox Dimensions ...............................................6
Minimum Hearth Dimensions.................................7
 ..................................................7
....................8
...................................................10
Gas Line Installation ..............................................12
 ................................................13
 ...............................................14
Forced Air Kit .......................................................14
Brass or Chrome Trim..........................................14
Optional Wide Canopy.........................................14
Illustrated Parts Breakdown..................................15
..............................16
Warranty ..................................................Back Cover

26D4750 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re-
boxenclosuresforgas-redunventeddecorativeroom
heaters.
11. Do not install heater in a bathroom or bedroom.
12. Correct installation of the ceramic ber logs, proper
location of the heater, and annual cleaning are neces-
sary to avoid potential problems with sooting. Sooting,
resulting from improper installation or operation, can
settleonsurfacesoutsidethereplace.Seelogplacement
instructions for proper installation.
13. Avoidanydraftsthatalterburneramepatterns.Donot
allowfanstoblowdirectlyintoreplace.Donotplace
ablowerinsideburnareaofrebox.Ceilingfansmay
createdraftsthatalterburneramepatterns.Sootingand
improper burning will occur.
14. Caution: Candles, incense, oil lamps, etc. produce
combustion byproducts including soot. Vent-free appli-
anceswillnot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-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 appliance.
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 rebox.
IMPORTANT SAFETY INFORMATION
1. Due to high temperatures, the appliance should be
locatedoutoftraf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 appli-
ance.
 4. Donotplaceclothingorother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quali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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







WARNING

4 26D4750
IMPORTANT SAFETY INFORMATION
Continued from page 3
16. Keep room area clear and free from combustible materi-
als,gasolineandotherammable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 area.
In most homes of average construction, this does not pose
a problem. In houses of extremely tight construction,
additional mechanical ventilation is recommended.
19. During manufacturing, fabricating and shipping, various
components of this appliance are treated with certain
oils,lmsorbondingagents.Thesechemicalsarenot
harmful but may produce annoying smoke and smells
as they are burned off during the initial operation of the
appliance; possibly causing headaches, or eye or lung
irritation. This is a normal and temporary occurrence.
The initial break-in operation should last two to three
hours with the burner at the highest setting. Provide
maximum ventilation by opening windows or doors to
allow odors to dissipate. Any odors remaining after this
initial break-in period will be slight and will disappear
with continued use.
20. Input ratings are shown in BTU per hour and are for
elevations up to 2,000 feet. For elevations above 2,000
feet, input ratings should 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
during any pressure testing of the gas supply piping
system at test pressures equal to or less than 1/2 psig
(3.5 kPa).
23. Do not use this room heater if any part has been under
water. Immediatelycallaqualiedservicetechnician
to inspect the room heater and to replace any part of the
control system and any gas control which has been under
water.
24. Neverburnsolidfuelsinareplacewhereaunvented
room heater is installed.
25. Alwayshaveareplacescreeninplacewhentheappli-
ance is in operation, and unless other provisions for
combustion air are provided, the screen shall have an
opening(s) for induction of combustion air.
26. Donotllspacesaroundthereboxwithinsulationor
other materials. These spaces must be maintained to
preventthereboxfromcomingincontactwithcom-
bustible materials.

26D4750 5
The36MCUFDand42MCUFDSeriesarevent-freereboxes.Theyfeatureaselfcontainedheat-circulatingsystem.
Thisinstallationmanualwillenableyoutoobtainasafe,efcientanddependableinstallationofyourvent-freerebox.
Donotalterormodifythereboxoritscomponentsunderanycircumstances.Anymodicationoralterationoftherebox
system,includingbutnotlimitedtothereboxandaccessories,mayvoidthewarranty,listingsandapprovalsofthissystem
and could result in an unsafe and potentially dangerous installation.
BEFORE YOU START
Carefully inspect the contents for shipping damage. If any parts are missing or damaged, immediately inform the dealer
from whom you purchased the appliance. Do not attempt to install any part of the appliance unless you have all the parts in
good condition.

Check your packing list to verify that all listed parts have been received. You should have the following:
1. Vent-Free Gas Firebox 4. Five (5) sheet metal screws for canopy
2. Canopy
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nishingmaterials  
• Saw and / or sabersaw • Tee joint • Caulking material (noncombustible)
• Level • Pipe wrench • Fireplace surround materials (noncombustible)
• Measuring tape • Pliers
• Electric drill and bits • Pipe sealant approved for use with propane/L.P.G. (resistant to sulfur compounds)
Refer to the installation instructions provided with the log sets for items required for log set installation.
PRODUCT FEATURES


 

WARNING

and are for design and framing reference only. Actual installations may vary due to
         

NOTICE

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 unique, however, and might require a different sequence.
1. Positionreboxpriortoframingorintopreparedframing.
2. Field wire main power supply to models with fan kit. (Electrical connections should only be performed by an experi-
enced,licensed/certiedtradesman).
3. Plumbgasline.(Gasconnectionsshouldonlybeperformedbyanexperienced,licensed/certiedtradesman).
4. Install vent-free gas log heater per the instructions provided with the vent-free gas log heater.
5. Completenishwallmaterial,surroundandoptionalhearthextensiontoyourindividualtaste.
FIREBOX DIMENSIONS
GENERAL INSTALLATION INFORMATION
Figure 1 - Firebox Dimensions
D
F
E
H
C
5.25"
32.125"
2.50" 2.50"
B26.25"
9.75"
8.25"
37.375"
6"
36MCUFD 42MCUFD
A 411/4" 47"
B 36" 42"
C 181/4" 181/4"
D 32" 38"
E 203/4" 203/4"
F 271/4" 331/4"
H337/8" 397/8"

26D4750 7
36MCUFD-F 36MCUFD-R 42MCUFD-F 42MCUFD-R
A 261/4" 253/4" 321/4" 313/4"
B 15" 143/4"15" 143/4"
C 325/8" 321/8" 385/8" 381/8"
D 25" 25" 25" 25"
E201/2"201/2" 201/2" 201/2"
MINIMUM HEARTH DIMENSIONS
GENERAL INSTALLATION INFORMATION and LOCATION OF FIREBOX
Figure 2 - Minimum Hearth Dimensions
LOCATION OF FIREBOX
Carefully select the best location for installation of your
vent-freerebox.Thefollowingfactorsshouldbetaken
into consideration:
• Clearance to side wall, ceiling, woodwork and
windows. See “Clearances/Height Requirements on
page 8. Minimum clearances to combustibles must
be maintained.
• Location must not be affected by drafts caused by
kitchen exhaust fans, ceiling fans, return air registers
for forced air furnaces / air conditioners, windows
or doors.
• Installation must provide adequate ventilation and
combustion air.
• DO NOT INSTALL THIS FIREBOX IN A
BEDROOM OR BATHROOM.
 • Locationshouldbeoutofhightrafcorwindyor
drafty areas.
• DO NOT INSTALL WHERE CURTAINS, FURNITURE, CLOTHING OR OTHER FLAMMABLE OBJECTS
ARE LESS THAN 42" FROM FRONT OF HEATER.
 • Neverobstructthefrontopeningofthevent-freereboxorrestricttheowofcombustionandventilationair.
 • Minimizemodicationstoexistingconstruction.RefertoFigure3belowforlocationsuggestions.
 • Donotinstallinthevicinitywheregasolineorotherammableliquidsmaybestored.Thevent-freereboxmustbe
kept clear and free from these combustible materials.
Figure 3 - Location of Firebox

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rebox.
Follow these instructions carefully to ensure safe installation. Failure
tofollowtheserequirementsmaycreatearehazard.
1. Sidewall clearances: The clearance from the inside of the
appliance to any combustible wall should not be less than 6".
See Figure 4.
2. Ceiling clearance: The ceiling must be at least 42” from the
topofthereboxopening.See Figure 4.
3. Back wall clearance: The appliance may be placed against a
combustible back wall.
Figure 4 - Clearance and Height
Requirements
4. Floor clearance: Thisinnerchamberreboxoormustbeinstalledatleast6"aboveanycombustibleooringmate-
rial,suchascarpetingorasphalttile,whichiscloserthan14"tothebaseoftherebox.See Figure 5.
Or
  Theinnerchamberreboxoormaybeinstallednearertotheoorifaminimumof14"ofnoncombustiblematerial
suchasslateormarbleisinstalledbetweenthebaseofthereboxandthecombustibleooring. See Figure 6.
Figure 5 - Minimum Clearance above
Combustible Flooring
Figure 6 - Minimum Clearance above Combustible
Flooring with Non-Combustible Material Installed at
Base of Fireplace
Combustible
Material
6" Minimum
14" Minimum
Can Be
Less than 6" Non-Combustible
Material
CLEARANCES and HEIGHT REqUIREMENTS

26D4750 9
12"
10"
8"
6"
21/2"
12"
16"
19"
21"
23"
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 7A - Mantel Clearances Figure 7B - Mantel Clearances for Wide Prole
Canopy Only.
FIREPLACE
WALL
COMBUSTIBLE
MATERIAL AREA
HOOD
TOP VIEW
Figure 8- Mantel Clearances
CLEARANCES and HEIGHT REqUIREMENTS

10 26D4750
H
G
D
F
E
A
C
B
A
81/4"
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reboxframingfollowingFigures 9
through 12 andthechartbelowforyourspecicinstallationrequirements.See Figure 1 on Page 6 forreboxdimensions.
Theframingheadersmayrestonthetopofthereboxstandoffs.
Thereboxmaybeinstalleddirectlyonacombustibleoororraisedonaplatformofanappropriateheight.Whenthe
reboxisinstalleddirectlyoncarpeting,tile,orothercombustiblematerial,otherthanwoodooring,thereboxshallbe
installed on a metal or wood panel extending the full width and depth of the enclosure.
Figure 9 - Corner Installation
Figure 11 - Stud Location
Figure 10 - Inside Chase
Installation
Figure 12 - Recessed Installation

insulation or other materials. This

WARNING
Combustibles may not come any closer to the top of the
enclosure than the standoffs will allow.
36 MCUFD 42MCUFD
A 411/4" 471/4"
B 373/4" 373/4"
C 32" 38"
D 163/8" 193/8"
E 687/8" 747/8"
F 341/2" 371/2"
G 173/4" 173/4"
H 483/4" 53"