Majestic 33ISDG User manual

This is an unvented gas-red heater.
It uses air (oxygen) from the room
in which it is installed. Provisions for
adequate combustion and ventilation air
must be provided. See page 9.
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 of life.
– Donotstoreorusegasolineorotherammable
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building.
• Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call the
redepartment.
– Installation and service must be performed by
a qualied installer, service agency or the gas
supplier.
MODEL: 33ISDG
Natural Gas or Propane/LPG
Control Type: Milli-Volt and T-Stat
VENT-FREE
FIREPLACE SYSTEMS
INSTALLATION AND
OPERATING INSTRUCTIONS
WARNINGS
This appliance may be installed in
an aftermarket, permanently located,
manufactured (mobile) home, where
not prohibited by local codes.
This applicance is for use only with the
type of gas indicated on the rating plate.
This applicance is not convertible for
use with other gases.

2 23D8036
CONTENTS
Important Safety Information ..................................3
Product Features......................................................5
Operation ..............................................................5
Natural Gas ..........................................................6
Propane/LPG ........................................................6
Specications ...........................................................6
Ignition Controls ....................................................6
Pilot .......................................................................6
Thermal Generator ...................................................6
Getting Started..........................................................7
General Installation Information .............................8
Removing Screen .................................................8
Installing Canopy ..................................................8
Codes ...................................................................9
Adequate combustion and Ventilation Air .............9
Clearances and Height Requirements..................11
Fireplace Framing...................................................14
Securing Heater to Floor........................................15
Connecting the Gas................................................16
Checking Gas Pressure .........................................18
Electrical Wiring (Milli-Volt) ...................................19
Electrical Wiring (Fan)............................................21
Log Placement........................................................22
Flame Appearance..................................................26
Checking the Burner Flame...................................27
Operating Instructions...........................................28
What to Do if You Smell Gas ..............................28
Milli-Volt Control Lighting Instructions .................29
Match Lighting Instructions .................................30
Cleaning and Servicing..........................................31
Troubleshooting .....................................................32
Illustrated Parts Breakdown..................................34
Fireplace Assembly ...........................................34
Grate and Base Assembly .................................36
Logs....................................................................38
Warranty ..................................................Back Cover

23D8036 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 Z21.11. Unvented Heat-
ers.
11. Do not install the heaters in a bathroom or bedroom.
12.Correctinstallationoftheceramicberlogs,properloca-
tionoftheheater,andannualcleaningarenecessaryto
avoidpotentialproblemswithsooting.Sooting,resulting
from improper installation or operation, can settle on sur-
faces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 com-
bustionbyproductsincludingsoot.Vent-freeappliances
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.Thisisanunventedgas-redheater.Itusesair(oxygen)
from the room in which it is installed. Provisions for
adequate combustion and ventilation air must be provided.
Seepage9.
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 this vent-free gas heater.
IMPORTANT SAFETY INFORMATION
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ser-
viced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re,
burns,explosionorcarbonmonoxidepoisoning.
•Donotallowfanstoblowdirectlyintothereplace.Avoiddraftsthatalterburnerame
patterns.
•Donotuseablowerinsert,heatexchangerinsertorotheraccessory,notapprovedfor
usewiththisheaterwhereapplicable.
WARNING
 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appliance.
 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and
atleastannuallybyaprofessionalserviceperson.More
frequentcleaningmayberequiredduetoexcessivelint
fromcarpeting,beddingmaterials,etc.Itisimperative
thatcontrolcompartments,burnersandcirculatingair
passagewaysbekeptclean.

4 23D8036
IMPORTANT SAFETY INFORMATION
Continued from page 3
16. Keep room area clear and free from combustible materials,
gasolineandotherammablevaporsandliquids.
17.Unventedgasheatersareasupplementalzoneheater.They
arenotintendedtobetheprimaryheatingappliance.
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.
27.InstallationofthisventedgaslogintheCommonwealth
of Massachusetts requires the damper be permanently
removed or welded in the full open position. In addition, a
naturallyventedgaslogmaynotbeinstalledinabedroom
orbathroomintheCommonwealthofMassachusetts.Flex
lineinstallationmustnotexceed36".
We suggest that our gas hearth
products be installed and
serviced by professionals who
are certied in the U.S.by the
National Fireplace Institute®
(NFI) as Gas Specialists.
Never connect unit to private (non-
utility) gas wells. This gas is commonly
known as wellhead gas.
WARNING
25.Alwayshaveareplacescreeninplacewhentheappliance
is in operation and, unless other provisions for combustion
airareprovided,thescreenmusthaveanopening(s)for
induction of combustion air.
26.FORMASSACHUSETTSRESIDENTSONLY:
This product must be installed by a
licensed plumber or gas tter when
installed within the Commonwealth of
Massachusetts.
WARNING
28.Anyoutsideairductsand/orashdumpsinthereplace
shallbepermanentlyclosedattimeofapplianceinstal-
lation.
Failure to keep the primary air openings
of the burners clean may result in
sooting and property damage.
WARNING

23D8036 5
Yourvent-freereplacemustbemountedtotheoororthereplacehearth.
OPERATION
Thisunventedgasheaterrequiresnooutsideventingandburnscleanlywithhighheatingefciency.
Piezo Ignitor
Fireplace
Screen
Control Knobs
PRODUCT FEATURES
Optional
Face Plate
Figure 1 - Unvented Gas Heater with Control Access Door Open
On/Off Switch
Blower
Optional T-stat
Sensor

6 23D8036
NATURAL GAS
Milli-Volt and T-Stat Pressure
RegulatorPressureSetting:3.5"w.c.
PilotRegulator:3.5"w.c.
GasInletPressure:Max.101/2"w.c.
 Min.5"w.c.
PRODUCT FEATURES and SPECIFICATIONS
PROPANE/LPG
Note: An external regulator is required to reduce supply pressure to a maximum of 13" w.c.
Milli-Volt and T-Stat Pressure
RegulatorPressureSetting:10"w.c.
GasInletPressure:Max.13"w.c.
 Min.11"w.c. 
IGNITION CONTROLS
Piezoignitorallowsignitionofthepilotwithouttheuseofmatchesorbatteries.
Milli-Volt and T-Stat control has four (4) positions:
OFF  - Allgastothegaslogsisshutoffatthevalve.
IGN  - Valvepositiontolight/maintainastandingpilot.
ON  - ValvepositiontoturnON/OFFlogsetwithremoteswitch/thermostat.
LOW/HI  - Variablepositiontocontrolameheight(heatoutput).Bothfrontandrearburnersareinoperationto
providerealisticglowandyellowame.
PILOT
Thegaslogheateristtedwithaspeciallydesignedsafetypilotlight(ODSassembly)whichsensestheamountofoxygen
availableintheroomandshutsthegaslogheateroffiftheoxygenlevelbeginstodropbelowasatisfactorylevel.Thepilot
canonlyberelitwhenadequatefreshairisavailable.
THERMAL GENERATOR
Themilli-voltgaslogpilotisttedwithamilli-voltgeneratortoprovidepowerforremoteactivation.
Gas Rate
Model Number Control Max BTU/HR Min BTU/HR
33ISDNTG Millivolt 28,000 19,000
33ISDNVG T-Stat 28,000 19,000
Gas Rate
Model Number Control Max BTU/HR Min BTU/HR
33ISDPTG Millivolt 28,000 23,000
33ISDPVG T-Stat 28,000 23,000

23D8036 7
GETTING STARTED
MAKE SURE YOU HAVE RECEIVED ALL PARTS
Checkyourpackinglisttoverifythatalllistedpartshavebeenreceived.Youshouldhavethefollowing:
 • Installation/Operatinginstructions • BlackLouvers(5)
 • 33"unventedgasheaterwithbrickpanels. • Canopy
 • Volcanicrockandrockwool  • Two(2)anchoringscrews
 • Mountingscrewsforcanopy
 • Logbox(refertoinstallationinstructions)
Accessoryfaceplatesavailabletonishtheinsert.
 • DIFACESM Blacksmallface33"Hx43"W • DIFACELG Blacklargeface36"Hx50"W
Accessoriesincludebrasstrimandmountinghardware
Themilli-voltcontrolledversionofthisheateristheonlystyledesignedtobeoperatedwithoptionaldevicesforON/OFF
functions.Thefollowingoptionsmaybeusedwiththemilli-voltcontrolledheater.Theseoptionsarenotpackagedwiththe
logset.
 •HandheldRemotewithReceiver • Wallswitchwith15'wire. • WallT-statwith15'wire.
• Hand held Thermostat Remote with Receiver • Thermostat Sensor
•Handlethegaslogburnerassemblybythegrateonly.Donotpicktheunitupbythe
burners.
•Glovesarerecommendedwhenhandlingceramicberlogstopreventskinirritation
fromloosebers.Logsarefragile—handlewithcare.
WARNING
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 parts
in good condition.
WHAT YOU WILL NEED FOR INSTALLATION
Youmusthavethefollowingitemsavailablebeforeproceedingwithinstallation…
 • Externalregulator(forpropane/L.P.G.and1/2lb.NaturalGasSystemsonly)
 • Pipingwhichcomplieswithlocalcodes • Sedimenttrap
• Tee joint • Pipe wrench or appropriate size crescent wrench set
 • Phillipsheadscrewdriver • Drillwith5/32"bit
 • Optionalfaceplatekit. • Manualshutoffvalve
 • OptionaltrimkitforinstallationintowallorfreestandingMantlewithoutthreepiecefaceplate
 • Pipesealantapprovedforusewithpropane/LP.G(Resistanttosulfurcompounds)

8 23D8036
REMOVING SCREEN
Removereplacescreenbypushingscreenframepanelup
and out. See Figure 2.
Figure 2 - Removing Fireplace Screen
GENERAL INSTALLATION INFORMATION
INSTALLING CANOPY
1. Removethereplacescreenasdescribedintheprevioussection.
2. Aligncanopywiththeholesinthetopframeassembly.See Figure 3.
3. Install the ve (5) screws (in owner’s manual packaging) which attach the canopy to the top frame assembly. See
Figure 3.
4. Tightenallscrews.Makesurethecanopyislevelandsecure.Installthereplacescreen.
Figure 3 - Installing Canopy
Do not operate the unit without the
screen frame panel and canopy
installed.
WARNING
NOTE: Fireplace screen must
be removed to access log box
and to install canopy.

23D8036 9
GENERAL INSTALLATION INFORMATION
CODES
Adheretoalllocalcodesor,intheirabsence,thelatesteditionofTHENATIONALFUELGASCODEANSIZ223.1or
NFPA54whichcanbeobtainedfrom…
American National Standards Institute, Inc.
1430Broadway
New York, NY 10018
or
National Fire Protection Association, Inc.
BatterymarchPark
Quincy,MA02269
ADEQUATE COMBUSTION AND VENTILATION AIR
Thisheatershallnot beinstalledinaconnedspaceor unusuallytight constructionunless provisionsareprovidedfor
adequate combustion and ventilation air.
The National Fuel Gas Code, (ANSI Z223.1/NFPA54),denesaconnedspaceasaspacewhosevolumeislessthan50
cubicfeetper1,000BTUperhour(4.8m3perkw)oftheaggregateinputratingofallappliancesinstalledinthatspaceand
anunconnedspaceasaspacewhosevolumeisnotlessthan50cubicfeetper1,000BTUperhour(4.8m3per kw) of the
aggregateinputratingofallappliancesinstalledinthatspace.Roomscommunicatingdirectlywiththespaceinwhichthe
appliancesareinstalled,throughopeningsnotfurnishedwithdoors,areconsideredapartoftheunconnedspace.
UNUSUALLY TIGHT CONSTRUCTION IS DEFINED AS CONSTRUCTION WHERE…
a) wallsandceilingsexposedtotheoutsideatmospherehaveacontinuouswatervaporretarderwitharatingof1perm
(6x1011kgperpa-sec-m2)orlesswithopeningsgasketedorsealed;and
b) weatherstripinghasbeenaddedonopenablewindowsanddoors,and
c) caulkingorsealantsareappliedtoareassuchasjointsaroundwindowanddoorframes,betweensoleplatesandoors,
betweenwall-ceilingjoints,betweenwallpanels,atpenetrationsforplumbing,electrical,andgaslines,andatother
openings.
Do not install the heater …
•Wherecurtains,furniture,clothing,orotherammableobjectsarelessthan42"from
the front of the heater.
•Inhightrafcareas.
• In windy or drafty areas.
WARNING

10 23D8036
W
H
BTU/Hr =
BTU/Hr =
WARNING
The following formula can be used to determine the maximum heater rating per the denition of unconned
space:
(L1 + L2) Ft x (W) Ft x (H) Ft
50
Consider two connecting rooms with an open area between, with the following dimensions:
L1 = 151/2 Ft., L2 = 12 Ft., W = 12 Ft., H = 8 Ft.
(151/2 + 12) x (12) x (8)
50
If there were a door between the two rooms the calculation would be based only on the room with the heater.
(151/2) x (12) x (8)
50
GENERAL INSTALLATION INFORMATION
Figure 4 - Example of a Large Room with 1/2 Wall Divider
Counter
Fireplace
x 1000
x 1000 = 52800 BTU/Hr
x 1000 = 29760 BTU/Hr
If the area in which the heater may be operated is smaller than that dened as an
unconnedspaceorifthebuildingisofunusuallytightconstruction,provideadequate
combustionandventilationairbyoneofthemethodsdescribedintheNationalFuel
GasCode,ANSIZ223.1/NFPA54,Section5.3orapplicablelocalcodes.
WARNING
BTU/Hr =