Majestic 400DVBL User manual

FRONT COVER IMAGE
PLEASE ADD LOGS INSIDE
MODELS: 400DVBL & 500DVBL
DVBL SERIES
DIRECT VENT GAS
FIREPLACE
INSTALLATION AND
OPERATING INSTRUCTIONS
READ BEFORE INSTALLING. SAVE THESE INSTRUCTIONS
DUE TO HIGH TEMPERATURES, THE
APPLIANCE SHOULD BE LOCATED OUT OF
TRAFFIC AND AWAY FROM FURNITURE AND
DRAPERIES.
CHILDREN AND ADULTS SHOULD BE
ALERTED TO THE HAZARDS OF HIGH
SURFACE TEMPERATURE AND SHOULD
STAY AWAY TO AVOID BURNS OR CLOTHING
IGNITION.
YOUNG CHILDREN SHOULD BE SUPERVISED
WHEN THEY ARE IN THE SAME ROOM AS THE
APPLIANCE.
C L O T H I N G O R O T H E R F L A M M A B L E
MATERIAL SHOULD NOT BE PLACED ON
OR NEAR THE APPLIANCE.
KEEP THE ROOM AREA CLEAR AND
FREE FROM COMBUSTIBLE MATERIALS,
GASOLINE, AND OTHER FLAMMABLE
VAPORS AND LIQUIDS.
IF THE INFORMATION IN THESE INSTRUCTIONS 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 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.
WARNING: Improper installation, adjustment, alteration,
services or maintenance can cause injury or property
damage. Refer to this manual. For assistance or additional
informationconsultaqualiedinstaller,serviceagency
or the gas supplier.
This appliance may be installed in an aftermarket*,
permanently located, manufactured home (USA only) or
mobile home, where not prohibited by local codes.
This appliance is only for use with the type of gas indicated
on the rating plate. This appliance is not convertible for
usewithothergases,unlessacertiedkitisused.
* Aftermarket: Completion of sale, not for purpose of resale, from the
manufacturer.
WARNING

2 74D0010
CONTENTS
Important Safety Information .......................... 3
Product Features.............................................. 5
Code Approval .................................................. 5
Pre-Installation Information
Installing Above 2000 Feet............................ 6
Orice Sizes, Pressures and BTUs............... 6
Before You Start ............................................ 6
Fireplace Framing ......................................... 7
Fireplace Dimensions.................................... 8
Fireplace Location......................................... 9
Clearances ...................................................... 10
Securing Fireplace to Floor or Framing ........11
Installation Information.................................. 12
Vent Installation .............................................. 13
Installation Planning.................................... 14
Rear (Through-the-Wall) Applications ......... 17
Vertical/Horizontal Termination
Conguration............................................... 19
Below Grade Installation ............................. 21
Vertical Through-the-Roof Applications....... 22
Installation for Vertical Termination ............. 23
Flex Vent Installation ................................... 25
Fireplace Installation...................................... 27
Check Gas Type.......................................... 27
Installing Gas Piping to Fireplace/Burner
System Location.......................................... 27
Checking Gas Pressure (Millivolt) ............... 29
Electrical Installation...................................... 29
Electrical Wiring .......................................... 29
Remote Wall Switch Installation ................... 30
Optional Fan/Blower Systems (Milli-Volt)..... 30
Operating Instructions (Milli-Volt)................. 32
Lighting Pilot for the First Time.................... 32
Lighting Pilot................................................ 33
Lighting Burner............................................ 34
Checking Gas Pressure -
(Signature Command System) ................ 35
Electrical Wiring
(Signature Command System) ................ 35
Optional Fan/Blower System
(Signature Command System)................. 36
Operating Instructions
(Signature Command System)................. 39
Operating Instructions................................. 39
To Turn Off Gas To Appliance ..................... 40
Signature Command System Operation....... 41
Glass Removal................................................ 44
Final Installation ............................................. 45
Hearth Brick Placement .............................. 45
Rockwool Placement................................... 45
Log Placement ............................................ 45
Cleaning and Maintenance ............................ 47
Burner, Pilot and Control Compartment ...... 47
Pilot Flame .................................................. 47
Burner Flame .............................................. 47
Vent System ................................................ 48
Glass Door .................................................. 48
Logs ............................................................ 48
Rock Wool .................................................. 48
Troubleshooting
Standing Pilot Ignition ................................. 49
Signature Command System ...................... 51
Illustrated Parts Lists..................................... 52
Firebox Components................................... 52
Standing Pilot Millivolt Control .................... 54
Signature Command System ...................... 56
Vent Components........................................ 58
Logs ............................................................ 60
Mass Residents Only ..................................... 61
Warranty .......................................................... 63

74D0010 3
4. Neverinstallthereplace
  • inarecreationalvehicle
  • wherecurtains,furniture,clothing,orotherammable
objectsarelessthan42"fromthefront,top,orsides
ofthereplace
  • inhightrafcareas
  • inwindyordraftyareas
5. Thisreplacereacheshightemperatures.Keepchildren
andadultsawayfromhotsurfacestoavoidburnsorcloth-
ingignition.Fireplace willremainhot foratime after
shutdown.Allowsurfacestocoolbeforetouching.
6. Carefullysuperviseyoungchildrenwhentheyareinthe
roomwithreplace.
7. Donotmodifyreplaceunderanycircumstances.Any
parts removed for servicing must be replaced prior to
operatingreplace.
8. Turnreplaceoffandletcoolbeforeservicing,install-
ing,orrepairing.Onlyaqualiedservicepersonshould
install,service,orrepairthereplace.Haveburnersystem
inspectedannuallybyaqualiedserviceperson.
9. Youmustkeepcontrolcompartments,burners,andcir-
culatingairpassagesclean.Morefrequentcleaningmay
beneededduetoexcessivelintanddust.Turnoffthegas
valveandpilotlightbeforecleaningreplace.
10. Haveventingsysteminspectedannuallybyaqualied
serviceperson.Ifneeded,haveventingsystemcleaned
orrepaired.SeeCleaning and Maintenance,page35.
11. Keeptheareaaroundyourreplaceclearofcombustible
materials,gasoline,andotherammablevaporandliq-
uids.Donotrunreplacewheretheseareusedorstored.
Donotplaceitemssuchasclothingordecorationsonor
aroundreplace.
INSTALLER
Pleaseleavetheseinstructionswiththeappliance.
OWNER
Pleaseretaintheseinstructionsforfuturereference .
IMPORTANT SAFETY INFORMATION
This replace is a vented product. This replace must be
properlyinstalledbyaqualiedserviceperson.Theglassdoor
mustbeproperlyseatedandsealed.Ifthisunitisnotproperly
installedbyaqualiedservicepersonwithglassdoorproperly
seatedandsealed,combustionleakagecanoccur.
CARBON MONOXIDE POISONING: Early signs of
carbonmonoxidepoisoningaresimilartotheuwithhead-
aches,dizzinessand/ornausea.Ifyouhavethesesigns,the
replacemaynothavebeeninstalledproperly.Getfreshair
atonce!Havethereplaceinspectedandservicedbyaquali-
edserviceperson.Somepeoplearemoreaffectedbycarbon
monoxidethanothers.Theseincludepregnantwomen,people
withheartorlungdiseaseoranemia,thoseundertheinuence
ofalcohol,andthoseathighaltitudes.
Propane/LPgasandnaturalgasarebothodorless.Anodor-
makingagentisaddedtoeachofthesegases.Theodorhelps
youdetectagasleak.However,theodoraddedtothesegases
canfade.Gasmaybepresenteventhoughnoodorexists.
Make certain you read and understand all warnings. Keep
thismanualforreference.Itisyourguidetosafeandproper
operationofthisreplace.
1. Thisapplianceisonlyforusewiththetypeofgasindi-
catedontheratingplate.Thisapplianceisnotconvertible
forusewithothergasesunlessacertiedkitisused.
2. Forpropane/LPreplace,donotplacepropane/LPsupply
tank(s)insideanystructure.Locatepropane/LPsupply
tank(s)outdoors.Topreventperformanceproblems,do
notusepropane/LPfueltankoflessthan100lbs.capac-
ity.
3. Ifyousmellgas
  • shutoffgassupply.
  • 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. Continued on page 4
• Read this owner’s manual carefully and completely before trying to assemble, operate,
orservicethisreplace.
• Anychangetothisreplaceoritscontrolscanbedangerous.
• Improperinstallationoruseofthisreplacecancauseseriousinjuryordeathfrom
re,burns,explosions,electricalshockandcarbonmonoxidepoisoning.
WARNING

4 74D0010
IMPORTANT SAFETY INFORMATION
Continued from page 3
12.Donotusethisreplacetocookfoodorburnpaperor
otherobjects.
13. Neverplaceanythingontopofreplace.
14. Donotuseanysolidfuels(wood,coal,paper,cardboard,
etc.)inthisreplace.Useonlythegastypeindicatedon
ratingplate.
15.This appliance, when installed, must be electrically
groundedinaccordancewithlocalcodesorintheabsence
oflocalcodes,withtheNational Electrical Code, ANSI/
NFPA 70,ortheCanadian Electrical Code, CSA C22.1.
16. Donotobstructtheowofcombustionandventilation
air in any way. Provide adequate clearances around
air openings into the combustion chamber along with
adequateaccessibilityclearanceforservicingandproper
operation.
17. Whentheapplianceisinstalleddirectlyoncarpeting,tile
orothercombustiblematerialotherthanwoodooring,
youmustsetapplianceonametalorwoodpanelorhearth
padextendingthefullwidthanddepthoftheappliance.
18. Donotusereplaceifanyparthasbeenexposedtoor
hasbeenunderwater.Immediatelycallaqualiedservice
techniciantoinspecttheapplianceandreplaceanypart
ofthecontrolsystemandanygascontrolwhichasbeen
submergedinwater.
19. Donotoperatereplaceifanylogisbroken.
20. Donotuseablowerinsert,heatexchangerinsert,orany
otheraccessorynotapprovedforusewiththisreplace.
21. Donot operatethe replacewith glassdoor removed,
cracked,orbroken.
IMPORTANT:
PLEASE READ THE FOLLOWING CAREFULLY
It is normal for replaces fabricated of steel to
give off some expansion and/or contraction noises
during the start up or cool down cycle. Similar
noises are found with your furnace heat exchanger
or car engine.
IMPORTANT:
PLEASE READ THE FOLLOWING CAREFULLY
It is not unusual for gas replaces to give off some
odor the rst time it is burned. This is due to the
manufacturing process.
Please ensure that your room is well ventilated
during burn off — open all windows.
It is recommended that you burn your replace for
at least ten (10) hours the rst time you use it. Place
the fan switch in the “OFF” position during this time.
Never connect unit to private
(non-utility) gas wells. This
gas is commonly known as
wellhead gas.
WARNING
www.ncertied.org
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.

74D0010 5
PRODUCT FEATURES and CODE APPROVAL
Off/Pilot/On Knob
Figure 1 - DVBL Series Fireplace
(Millivolt Control shown)
• Thisappliance hasbeen certiedfor use
with either natural or propane gas. See
appropriatedataplates.
• This appliance is not for use with solid
fuels.
• Theapplianceisapprovedforbedroomor
bedsittingroominstallations.
• Theappliancemustbeinstalledinaccor-
dancewithlocalcodesifany.Ifnoneexist
use the current installation code.ANSI
Z223.1/NFPA54intheUSA,CSAB149
inCanada.
• This appliance is mobile home appr-
oved.
• Theappliancemustbeproperlyconnected
toaventingsystem.
• Theapplianceisnotapprovedforclosetor
recessedinstallations.
Hi/Lo Knob
PRODUCT SPECIFICATIONS
The efciency rating of this appli-
anceisaproductthermalefciency
ratingdeterminedundercontinuous
operatingconditionsandwasdeter-
minedindependentlyofanyinstalled
system.
ThermalEfciency=upto80%
CODE APPROVAL
DirectVenttypeappliancesdrawallcombustionairfromoutsideofthedwellingthroughtheventpipe.
TheseapplianceshavebeentestedbyCSAandfoundtocomplywiththeestablishedstandardsforDIRECTVENTGAS
FIREPLACEHEATERSintheUSAandCanadaasfollows:
LISTED VENTED GAS FIREPLACE HEATER
TESTED TO: ANSI Z21.88Bb-2008/CSA 2.33b-2008 STANDARDS
Amanufacturedhome(USAonly)ormobilehomeOEMinstallationmustconformwiththeManufactured Home Con-
struction and Safety Standard, Title 24 CFR, Part 3280, orwhensuchastandardisnotapplicable,theStandard for
Manufactured Home Installations, ANSI/NCSBCS A225.1,orStandard for Gas Equipped Recreational Vehicles and
Mobile Housing, CSA Z240.4.
On/Off/RS Switch
Ignitor

6 74D0010
PRE-INSTALLATION INFORMATION
INSTALLING ABOVE 2000 FEET
• IntheUSA,theappliancemustbederated4%forevery1,000ftabove2,000ftelevations.Wheretheheatingvalueof
thegashasbeenreduced,theserulesdonotapply.
• InCanada,theseappliancesarecertiedforaltitudesof0–2000ft,andmustbede-ratedby10percentforinstallations
between2000and4,500ft.(derateanadditional4%forevery1,000ft.above4,500ft.elevations).
ORIFICE SIZES, PRESSURES AND BTUs
NATURAL GAS PROPANE GAS
ManifoldPress:(W.C.) 3.5" ManifoldPress:(W.C.) 10"
MaximumSupplyPressure 10.5" MaximumSupplyPressure 13" 
MinimumSupplyPressure 4.5" MinimumSupplyPressure 11"
BEFORE YOU START
Readthishomeownermanualthoroughlyandfollowallinstructionscarefully.Inspectallcontentsforshippingdamageand
immediatelyinformyourdealerifanydamageisfound.Donotinstallanyunitwithdamaged,incomplete,orsubstituteparts.
Checkyourpackinglisttoverifythatalllistedpartshavebeenreceived.Youshouldhavethefollowing:
• Fireplace(FireboxandBurnerSystem)
• RockWool
• LogSet
ITEMS REQUIRED FOR INSTALLATION
Tools: Building Supplies:
• PhillipsScrewdriver • FramingMaterials
• Hammer • WallFinishingMaterials
• Sawand/orsabersaw • CaulkingMaterial(Noncombustible)
• Level • FireplaceSurroundMaterial(Noncombustible)
• MeasuringTape • PipingComplyingwithLocalCodes
• ElectricDrillandBits • TeeJoint
• Pliers • PipeSealantApprovedforusewithPropane/LPG
• Square  (ResistanttoSulfurCompounds)
• PipeWrench
Model
Number
400DVBLNV 400DVBLPV 500DVBLNV 500DVBLPV 400DVBLNS 400DVBLPS 500DVBLNS 500DVBLPS
GasType Natural Propane Natural Propane Natural Propane Natural Propane
Max.BTU/h
Input
26,000 26,000 28,000 27,000 26,000 26,000 28,000 27,000
Min.BTU/h
Input
19,000 21,000 20,000 22,000 19,000 21,000 20,000 22,000
OriceSize 2.50mm 1/16in. #38 1.60 mm 2.50mm 1/16in. #38 1.60mm

74D0010 7
H
G
D
F
E
A
C
B
A
1/2” or 5/8”
C
A
G
C
G
A 1/2” or 5/8”
FIREBOX FRAMING
Fireboxframingcanbebuiltbeforeoraftertheapplianceissetinplace.ConstructreboxframingfollowingFigure 2andthe
chartbelowforyourspecicinstallationrequirements.SeeFigure 3onpage8forreboxdimensions.Theframingheaders
mayrestonthetopofthereboxstandoffs.Donotbringheadersbelowtopofstandoffs. Please note: When planning your
framing and installation, keep in mind that your gas line will come in on the right side of the box (as you are facing it) and
your electricity will come in on the left side.
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com-
bustible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.
FIREPLACE FRAMING
Corner Installation
Stud Location
Inside Chase Installation
Recessed Installation
Donotllspacesaroundreboxwith
insulation or other materials. This
couldcauseare.
WARNING
Figure 2 - Framing Dimensions
400DVBL 500DVBL
A 377/16" 417/16"
B 407/8" 407/8"
C 301/4" 341/4"
D 1413/16" 1613/16"
E 643/4" 683/4"
F 323/8" 343/8"
G 171/16" 171/16"
H 4513/16" 485/8"

8 74D0010
A
NF
C
KL
J
I
31 7/8
3
MB
D
E
H
G
15/16
11 3/8
PRE-INSTALLATION INFORMATION
Figure 3 - Fireplace Dimensions
FIREPLACE DIMENSIONS
E
H
J
A
D
L
K
C
F
N
MB
I
G
DESCRIPTION Key Letter 400DVBL 500DVBL
Overall Front Width A 371/16" 411/16"
Inside Width B 3115/16" 3515/16"
Glass Width C 29" 33"
CTR Pipe (L/R) D 189/16" 209/16"
Rear Width E 301/4" 341/4"
Glass Height F 2513/16" 2513/16"
Chassis Height G 371/2" 371/2"
Depth H 179/16" 179/16"
Height to Standoffs I 405/8" 405/8"
CTR Pipe Rear J 75/16" 75/16"
Top Face K 73/4" 73/4"
Side Face L 29/16" 29/16"
Bottom Face M 1" 1"
Overall Front Height N 405/8" 405/8"

74D0010 9
Y
EAB
C
D
F
Y
X
PRE-INSTALLATION INFORMATION
FIREPLACE LOCATION
Planfortheinstallationofyourappliance.Thisincludesdeterminingwheretheunitistobeinstalled,theventconguration
tobeused,framingandnishingdetails,andwhetheranyoptionalaccessories(i.e.blower,wallswitch,orremotecontrol)
aredesired.Consultyourlocalbuildingcodeagencytoensurecompliancewithlocalcodes,includingpermitsandinspec-
tions.
Thefollowingfactorsshouldbetakenintoconsideration:
• Clearancetoside-wall,ceiling,woodwork,andwindows.Minimumclearancestocombustiblesmust be maintained.
• Thisreplacemaybeinstalledalongawall,acrossacorner,oruseanexteriorchase.See Figure 4 forsuggestedloca-
tions.
• Locationshouldbeoutofhightrafcareasandawayfromfurnitureanddraperiesduetoheatfromappliance.
• Neverobstructthefrontopeningofthereplace.
• Donot installinthevicinitywheregasolineorotherammableliquidsmaybestored.
• Ventpiperouting.SeeVenting sectionfoundinthismanualforallowableventingcongurations.
• Theseunitscanbeinstalledinabedroom.SeeNationalFuelGasCodeANSIZ233.1/NFPA54—(currentedition),the
UniformMechanicalCode—(currentedition),andLocalBuildingCodesforspecicinstallationrequirements.
• Theseunitscanbeinstalledinabathroom.
Figure 4 - Locating Gas Fireplace
A Flat on Wall
B Cross Corner
C Island**
D Room Divider*
E Flat on Wall Corner*
F Chase Installation
Y 6" Minimum
** Island (C) and room divider (D) installation is possible as long as the horizontal portion of vent system (X)
does not exceed 20'. See Installing Horizontal Termination Conguration on pages 18 and 19.
* When you install your replace in (D) room divider or (E) at on wall corner positions (Y), a minimum of 6"
clearance must be maintained from perpendicular wall and front of replace.
NOTE
COLD CLIMATE INSULATION
Ifyouliveinacoldclimate,sealallcracksaroundyourappliance,andwherevercoldaircouldentertheroom,
withnoncombustiblematerial.Itisespeciallyimportanttoinsulatetheoutsidechasecavitybetweenthestuds
andundertheooronwhichtheappliancerests,iftheoorisabovegroundlevel.

10 74D0010
13" MIN.
6" MIN.
FROM OPENING
71" MINIMUM
CIELING
MANTEL SHELF:
0-12”MAX DEPTH
Follow these instructions carefully to ensure safe installation. Failure to follow
instructionsexactlycancreatearehazard.
The appliance cannot be installed on a carpet, tile or other combustible material other
thanwoodooring.Ifinstalledoncarpetorvinylooring,theapplianceshallbeinstalled
onametal,woodornoncombustiblematerialpanelextendingfullwidthanddepthof
the appliance.
WARNING
CLEARANCES
CLEARANCES TO COMBUSTIBLES
MANTEL CLEARANCES
NOTE: The combustible area above the facing must not protrude more than 3/4" from the facing. If it does,
it is considered a mantel and must meet the mantel requirements listed in this manual.
Figure 5 - Clearances from the mantel,
ceiling, and side wall.
Figure 5a - Mantel clearances.
6"
5"
3"
2.5" 4.5"
45°
3.5"3.5"
1" 1.5"1.5"
Allmantelshelves,regardlessofdepth,shouldbeamini-
mumof13"fromtopopeningofreplace.Mantelshelf
shall not exceed 12" maximum depth at 13" minimum
heightfromopening.
NOTE:
Fireplace
Opening
Wall
Combustible
Material Area

74D0010 11
Thereplacemustbesecuredtotheoorand/ortoframingstudsasshowninFigure 6.Usetwo(2)woodscrewsormasonry/
concretescrewstosecurereplacetotheoor.Usefour(4)screwstoattachreplacetoframing.Thesidenailinganges
are1/2"or5/8"toaccommodatedifferentwallthickness.
SECURING FIREPLACE TO FLOOR OR FRAMING
Figure 6 - Securing Fireplace to Floor and Framing Studs
Framing
Framing
Nailing
Flange
Nailing
Flange
Screws
Screws
Screws
Nailing
Flange
Nailing
Flange

12 74D0010
Read all instructions completely and thoroughly before attempting installation. Failure
to do so could result in serious injury, property damage or loss of life. Operation of
improperly installed and maintained venting system could result in serious injury,
property damage or loss of life.
WARNING
Failure to follow these instructions will
void the warranty.
NOTICE
INSTALLATION PRECAUTIONS
Consultlocalbuildingcodesbeforebeginningtheinstallation.Theinstallermustmakesuretoselecttheproperventsystem
forinstallation.Beforeinstallingventkit,theinstallermustreadthisreplacemanualandventkitinstructions.
Onlyaqualiedinstaller/servicepersonshouldinstallventingsystem.Theinstallermustfollowthesesafetyrules:
 • Wearglovesandsafetyglassesforprotection.
 • Useextremecautionwhenusingladdersorwhenonrooftops.
 • Beawareofelectricalwiringlocationsinwallsandceilings.
Thefollowingactionswillvoidthewarrantyonyourventingsystem:
 • Installationofanydamagedventingcomponent.
 • Unauthorizedmodicationoftheventingsystem.
 • InstallationofanycomponentpartnotmanufacturedorapprovedbyMHSC.
 • Installationotherthanpermittedbytheseinstructions.
FINISHING MATERIAL
NOTE: Any remote wiring (i.e. remote control, wall switch, and optional fan) must be done prior to nal
nishing to avoid costly reconstruction.
INSTALLATION INFORMATION
Onlynoncombustiblematerials(i.e.brick,tile,slate,steel,orothermaterialswithaULreratingofZero)maybeused
tocovertheblackpaintedfaceoftheappliance.Itispermissibletobringcombustiblewallboardtothetopandsideedges
oftheblackpaintedface.A300°Fminimumadhesivemaybeusedtoattachfacingmaterialstotheblacksurface.Ifjoints
betweenthenishedwallandthereplacesurroundaresealed,a300°Fminimumsealantmaterial(GeneralElectricRTV103
orequivalent)mustbeused.
VENT INSTALLATION
This replace must be vented to the outside. The venting system must NEVER be
attached to a chimney serving a separate solid fuel burning appliance. Each gas
appliance must use a separate vent system. Do not use common vent systems.
WARNING

74D0010 13
VENT INSTALLATION
Figure 7 - Combustible Clearances for Vent Pipe
A minimum of 3" clearance to the top is
required along horizontal length until ue
pipe penetrates outside wall.
A minimum 1"
clearance to
combustibles
permitted all
around ue at
outside wall
Horizontalsectionsofthisventsystemrequireaminimum
of 3" clearances to combustibles at the top of the ue
and 1" clearance at the sides and bottom until the ue
penetrates the outside wall. A minimum 1" clearance all
aroundtheueisacceptableatthispointofpenetration.
Vertical sections of this vent system require a minimum of
1" clearance to combustibles on all sides of the pipe.
WARNING
12" vertical rise required
before horizontal run

14 74D0010
VENT INSTALLATION
INSTALLATION PLANNING
Therearetwobasictypesofdirect-ventinstallation:
 • HorizontalTermination
 • VerticalTermination
Itisimportanttoselecttheproperlengthofventpipeforthetypeofterminationyouchoose.Itisalsoimportanttonotethe
wallthickness.
FOR HORIZONTAL TERMINATION
Select the amount of vertical rise desired.All horizontal run
ofventingmusthave1/4"riseforevery12"ofruntowardsthe
termination.
Youmayuseuptothree90°elbowsinthisventconguration.See
HorizontalTerminationCongurationsonpages17and18.
FOR VERTICAL TERMINATION
Measurethedistancefromthereplaceoortotheceiling.Addtheceilingthickness,theverticalriseinanatticorsecond
story,andallowforsufcientventheightabovetheroofline.
NOTE: You may use two 45° elbows in place of a 90° elbow. You must follow rise to run ratios when using
45° elbows. The appliance is approved for use with three 90° elbows maximum or a combination of 90°
and 45° elbows up to a maximum of 270°.
Fortwo-storyapplications,restopsarerequiredateachoorlevel.Ifanoffsetisneededintheattic,additionalpipeand
elbowswillberequired.
Youmayuseachasewithaventterminationwithexposedpipeontheexteriorofthehouse.SeeInstalling Vent System in
a Chasebelow.Ifpipeisenclosedinchase,itisnotexposed.
Itisveryimportantthattheventingsystemmaintainitsbalancebetweenthecombustionairintakeandtheuegasexhaust.
Certainlimitationsapplytoventcongurationsandmustbestrictlyfollowed.
INSTALLING A VENT SYSTEM IN AN OUTSIDE CHASE
Achaseisaverticalboxlikestructurebuilttoencloseventingthatrunsalongtheoutsideofabuilding.Achaseisrequired
forsuchventing.
Never run the vent pipe level or
downward.Thismaycauseexcessive
temperatures which could cause
are.
WARNING
Treatmentofrestopsandconstructionofthechasemayvaryfrombuildingtypeto
building type. These instructions are not substitutes for the requirements of local
building codes. You must follow all local building codes.
NOTICE
When installing in a chase, you should insulate the chase as you would the outside walls of
your home. This is especially important in cold climates. Insulation should be considered
a combustible material. Maintain proper clearances to all combustible materials.
NOTICE

74D0010 15
V
V
V
V
V
V
V
V
D
L
E
B
C
F
B
B
B B
B
M
I
A
A
J
H
G
A
Operable
Fixed
Closed Fixed
Closed
Opera-
ble
K
A
A
A
G
VENT INSTALLATION
Always maintain minimum clearances around vent systems. The minimum clearances
tocombustiblesforhorizontalventpipeare3"atthetopand1"atthesidesandbottom
of the vent system until the pipe penetrates the nearest vertical wall (1" required). A
1" minimum clearance all around the pipe must be maintained at outside wall and on
vertical runs. Do not pack the open air spaces with insulation or other materials. This
couldcausehightemperaturesandmaypresentarehazard.
WARNING
Figure 8 - Horizontal Vent Termination Location
Vent Terminal Air Supply Inlet Area Where Terminals Not Permitted
Inside Corner Detail
FOR HORIZONTAL TERMINATION
MINIMUM DISTANCES
A=Clearanceabovethegrade,averanda,porch,deck,orbalcony[*12"(305mm)minimum]. 
B=Clearancetowindowordoorthatmaybeopened[*12"(305mm)minimum].
C=Clearance to permanently closed window [*minimum 12" (305 mm) recommended to prevent condensation on
window]
D=Verticalclearancetoventilatedsoftlocatedabovetheterminalwithinahorizontaldistanceoftwo(2)feet(610mm)
fromthecenterlineoftheterminal[18"(457mm)minimum].
E= Clearancetounventilatedsofts[12"(305mm)minimum].Clearancetovinylsoft[30"(762mm)].
F= Clearancetoanoutsidecorner.See Figure 9.
G=Clearancetoaninsidecorner. See Figure 9.
H=*Nottobeinstalledaboveagasmeter/regulatorassemblywithinthree(3)feet(914mm)horizontallyfromthecenterline
oftheregulator.
I= Clearancetoserviceregulatorventoutlet[*3'(914mm)minimum].
J= Clearancetonon-mechanicalairsupplyinlettobuildingorthecombustionairinlettoanyotherappliance[*12"(305mm)
minimum].
K=Clearancetoamechanicalairsupplyinlet[*6'(1829mm)minimum].
L= Clearanceaboveapavedsidewalkorpaveddrivewaylocatedonpublicproperty[**7'(2133mm)minimum].
M=Clearanceunderveranda,porch,deck,orbalconyRefertoFigure9[*ForCanada12"(305mm)minimum***].
* AsspeciedinCSAB149InstallationCodes.Note:Localcodesorregulationsmayrequiredifferentclearances.
** Aventmustnotterminatedirectlyaboveasidewalkorpaveddriveway,whichislocatedbetweentwosingle-family
dwellingsandservesbothdwellings. 
***Onlypermittedifveranda,porch,deck,orbalconyisfullyopenonaminimumoftwosidesbeneaththeoor.

16 74D0010
V
GG=6" (152mm)
FF=6" (152mm)
V
V
G
G = Combustible 24"(610mm)
Noncombustible 18"(457mm)
Combustible &
Noncombustible
H = 24" (610mm)
J = 20" (508mm)
V
H
J
C = Maximum depth of 48" (1219mm)
for alcove location
D = Minimum width for back wall of
alcove location
Combustible - 38" (965mm)
Noncombustible - 24" (610mm)
E = Clearance from corner in alcove
location
Combustible - 6" (152mm)
Noncombustible - 2" (51mm)
E
V
D
C
C
Inside Corner
Alcove Location
Outside Corner
Balcony with No Side Wall Balcony with Perpendicular
Side Wall
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
2 4 6 8 10 1214 16 1820
eg: A
VENT INSTALLATION
TERMINATION CLEARANCES FOR BUILDINGS WITH COMBUSTIBLE
AND NONCOMBUSTIBLE EXTERIORS
Figure 9 - Allowable Venting Chart
HOW TO USE THE VENT GRAPH
TheVentGraphshouldbereadinconjunctionwiththefollowing
ventinstallationinstructionstodeterminetherelationshipbetween
theverticalandhorizontaldimensionsoftheventsystem.
1. Determinetheheightofthecenterofthehorizontalventpipe
exiting through the outer wall. Using this dimension on the
SidewallVentGraphbelow,locatethepointintersectingwith
theslantedgraphline.
2. Fromthepointofthisintersection,drawaverticallinetothe
bottomofthegraph.
3. Selecttheindicateddimension,andposition the replacein
accordancewithsame.
Example: If the vertical dimension from the oor of the
replace is 11' (3.4m) the horizontal run to the face of the
outer wall must not exceed 14' (4.3m).
Example: If the vertical dimension from the oor of the unit
is 7’ (2.14m), the horizontal run to the face of the outer
wall must not exceed 81/2' (2.6m).
SidewallVentGraphshowingtherelationshipbetweenverticaland
horizontaldimensionsforaDirectVentuesystem. Figure 10 - Rear Wall Venting Graph
Horizontal dimension from the nished outside wall
to the center of the pipe on the replace
Vertical Dimension From the Floor of Unit to the
Center of the Horizontal Vent Pipe
Dimensions in
Feet
Combustible – 6" (152 mm)
Noncombustible – 2" (51mm)
57" from
oor
to center

74D0010 17
VENT INSTALLATION
REAR (THROUGH-THE-WALL) APPLICATIONS
Sealantisnotrequiredtoassemblereplaceventing.Donot
usesiliconesealantattheueexhaustconnections.
1. Findthepipesection'sdirectionlabel.Thelabelarrowshall
bepointedawayfromthereboxandtowardthetermina-
tion.Firmlyinserttheinitialrigidsection/elbowintothe
reboxoutercollar.Simpson"GS"andSelkirk"DT"outer
wallsarehemmedandwillsnapintothecollar'stabs.
AttachSimpson'sDirectVentProbyfullyinsertingintothe
collarandsecuringwithself-tappingscrews.Thescrews
shallonlypenetratetheueouterwall.
 Refertoventmanufacturer'sinstallationinstructionsto
properlyassembleue.
2. Locateandcuttheventopeninginthewall.Forcombus-
tiblewallsrstframeinopening.
Combustible Interior Walls:Cutan111/2"Hx91/2"W
holethroughtheinteriorwall.
Combustible Exterior Walls:Cuta91/2"Hx91/2"W
squareholethroughtheexteriorwallframe.See Figure 12.
Noncombustible Walls:Holeopeningshouldbe71/2"(190
mm)indiameter.
3. Thecenteroftheholeshouldalignwiththecenterlineof
thehorizontalrigidventpipeend.Pipeshallalwaysrun
leveloruphillonhorizontalruns.Neverrunpipedown
hill. See Figure 12.
Female Locking Lugs
Male Slots
NOTE: Horizontal runs
of vent must be sup-
ported every three feet
(914 mm). Use wall
straps for this purpose.
Figure 11 - Rigid Vent Pipe Connections
91/2"
(241 mm)
91/2"
(241 mm)33/4"
(92 mm)
71/2"
(190 mm)
Figure 12 - Exterior Wall Framing Dimensions

18 74D0010
VENT INSTALLATION
REAR (THROUGH-THE-WALL) APPLICATIONS (continued)
4. Applyabeadofnon-hardeningmasticaroundtheoutsideedge
ofventcap.Positiontheventcapinthecenterofholeonthe
exteriorwallwiththeword"HOT"ontheventcapfacingup.
Insureproperclearanceof1"tocombustiblesismaintainedto
theue.Attachtheventcapwithfourwoodscrewssupplied.
See Figure 13.
HOT
Vent Cap
Wood Screw
Apply Mastic to
all Four Sides
Figure 13 - Installing Horizontal Termination
HOT
Cut Vinyl Siding
Away to Fit Standoff
Standoff #950
Simpson
Termination
#985
Bolt
Wood Screw
Nut
Apply
Mastic to all
Four Sides
Figure 14 - Installing Simpson/Selkirk Vinyl
Siding Standoff and Termination
Inerior Wall
Surface
Firestop
Horizontal
Vent Pipe
Screw
Vent Cap
(Horizontal
Termination)
Figure 15 - Installing Firestop on
Horizontal Vent Pipe
WARNING
Do not recess vent
termination into any
wall. This will cause a
rehazard.
NOTE: Replace the wood screws with appropriate
fasteners for stucco, brick, concrete, or other types of
siding.
Avinylsidingstandoff(part#950)mustbeusedwiththeSimpson/
SelkirkHorizontalTermination(part#985)onvinyl,stuccoorwood-
cladexteriorwalls.Applynon-hardeningmasticaroundoutsideedge
ofthestandoffinsteadoftheventcapassembly.See Figure 14.
5. Slidetherestopovertheventpipebeforeconnectingthehori-
zontalruntotheventcap.See Figure 15.
6. Theterminationshouldoverlaptheueaminimumof11/4".
Applysiliconetotheouterpipe/terminationconnection.Fasten
terminationwithscrewsprovided.
7. Slidetherestopagainsttheinteriorwallsurfaceandattachwith
screws.See Figure 15.

74D0010 19
12" Min.
• Themaximumnumberof90°elbowspersidewallinstallationisthree(3).See Figure 16.
• Aminimumof12"isrequiredbeforea90°elbow.Ifa90°elbowistteddirectlyafter12"verticalsectionmountedto
thetopofthereplace,themaximumhorizontalventrunbeforetheterminationoraverticalriseis24”(914mm).See
Figure 17.
VENT INSTALLATION
VERTICAL/HORIZONTAL TERMINATION
CONFIGURATIONS
Since it is very important that the venting system maintain its balance between the combustion air intake and the ue
gas exhaust, certain limitations as to vent congurations apply and must be strictly adhered to.
TheVentGraph,showingtherelationshipbetweenverticalandhorizontalsidewallventing,willhelptodeterminethevari-
ousdimensionsallowable.See Figure 10.
NOTE: Horizontal sections of this vent system require a minimum of 3" clearances to combustibles at the top of the
ue and 1" clearance at the sides and bottom until the ue penetrates the outside wall. A minimum 1" clearance all
around the ue is acceptable at this point of penetration.
Vertical sections of this vent system require a minimum of 1" clearance to combustibles on all sides of the pipe.
Whenventexitsthroughfoundationslessthan20"belowoutcrop,theterminationmustbeushupwithoutcroppedwall
above.
Itisbesttolocatethereplaceinsuchawaythatminimizesthenumberofoffsetsandhorizontalventlength.
Thehorizontalventrunreferstothetotallengthofventpipefromtheuecollarofthereplace(orthetopoftheTransition
Elbow)tothefaceofthenishedoutsidewall.
Figure 16 - Maximum Three (3) 90° Elbows
Per Installation
Figure 17 - Maximum Horizontal Run with No Rise
3 x 90°
Elbows
24"
Max.
24"
Max.
12" Min.

20 74D0010
VERTICAL/HORIZONTAL TERMINATION
CONFIGURATIONS (continued)
• Ifa90°elbowisusedinthehorizontalventrun(levelheight
maintained)thehorizontalventlengthisreducedby36".
See Figures 16 and 17, page19.Thisdoesnotapplyifthe
90°elbowsareusedtoincreaseorredirectaverticalrise.
See Figure 19.
Example: According to the vent graph (page 16) the
maximum horizontal vent length in a system with a 10'
vertical rise is 20’ (6m) and if a 90° elbow is required in
the horizontal vent it must be reduced to 17' (5.2 m).
In Figures 18 and 19dimensionAplusBmustnotbegreater
than17'(5.2m).
• Themaximumnumberof45°elbowspermittedperside
wallinstallationistwo(2).Theseelbowscanbeinstalled
ineithertheverticalorhorizontalrun.
• Foreach45°elbowinstalledinthehorizontalrun,thelength
ofthehorizontalrunMUSTbereducedby18"(45cm).This
doesnotapplyifthe45°elbowsareinstalledonthevertical
partoftheventsystem.
• Themaximumnumberofelbowdegreesinasystemis270°.
See Figure 20.
Figure 19 - Maximum Vent Run with Elbows
Example: Elbow 1 = 90°
Elbow 2 = 45°
Elbow 3 = 45°
Elbow 4 = 90°
Total Angular Variation = 270°
Figure 18 - Horizontal Run Reduction
Figure 20 - Maximum Elbow Usage
VENT INSTALLATION
90°
A + B = 17' Maximum
90° Elbow = 3'
1 + 2 + 3 + 4 = 270°
1
2
3
4
10'
A B
10'
10'
7'
A
B
12" Min.