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ChimneyandChimneyConnection
CHECKYOURCHIMNEY
Followlocalcodes.Intheabsenceof localcodes,followANSI/NFPA31
InstallationofOilBurningEquipment,latestedition.
Thisisaveryimportantpartofyourheatingsystem.Noboiler,however
efficientitsdesign,canperformsatisfactorilyifthechimneythatservesitis
inadequate.Checkyourchimneytomakecertainthatitistherightsize,
properlyconstructedandinsoundcondition.
Itischeapertorebuilda poorchimneythantopayexcessivefuelbills.If
yoursisanoldmasonrychimney,a newsteellineror a new
prefabricatedchimneymaybethebestsolution.Thefollowingchartshows
recommendedminimumchimneysizesbasedonTable3andFigure6 of
theI:B:R TestingandRatingStandardfor HeatingBoilers,Sixth
Edition,June1989.
MUST BE REQUIRED MIN*
IMUM HEIGHT, MUST BE
AT LEAST 3 FT. HIGHER
THAN HIGHEST PART OF
PASSAGE THROUGH
ROOF. MUST BE AT
LEAST 2 FT. HIGHER
THAN ANY NEIGHBORING
OBJECT. MUST HAVE AN
UNOBSTRUCTED TOP
OPENING,
MUST BE AT LEAST
4 INCHES THICK -
AND BE LINED.
_l_ CHFM_ I
.60- i 30 15
13Iol 80 15
i,81o2,00 20
FIECOMMENDED MtNiMUM _IMNEY SIZES
=!:
_ER_ LNER;
_!NNqY' i_DE I_
8"×8 ' 6' 6:5_x 6_'
8' x 8" 7' , 6_f;_"× 6_!4"
[:<]re#_@:(Y)88_ee 2,#_ if,,8J3_es_ _i, ad_3 feetIocblm_qeYhe_gP4_
[_!et la Fiqure 1@t
Foradditionalchimneydesignandsizinginformation,consulttheASHRAE
1996HVACSystemsandApplicationsHand-book,Chapter30,Chimney,
GasVentandFireplaceSystems;ortheNationalStandardforChimneys,
Fireplaces,VentsandSolidFuelBurningAppliances,ANSI/NFPA211.
CHIMNEYCONNECTORANDDRAFTREGULATOR
Yourboilerrequires7"diameterchimneyconnectorpipeon 3 section,8"
diameterchimneyconnectorpipeon 4 section.Youmustalsouse a dralt
regulatorpackedwithboiler.Properlyinstalled,theregulatorwillcontrolthe
draftautomatically.Itisbettertoinstallitina horizontalsectionofthepipe;but
itmaybeinanangledorverticalsection.Justmakecertainthatthe"top"isat
top- andthattheshortpipesectionwhichholdstheVaneishorizontal.Install
itascloseaspracticabletotheboiler.
Toinstallthechimneyconnector,startattheboilerandpreferablytakeoff
fromthefluecollectorcollarwithanelbow- theninstallthedraftregulator
next,makingithorizontal.Whentheregulatorisinplace,startatthechimney
andworkbacktotheregulator.JointhetwosectionswithaDrawband.The
horizontalpipemustslopeuptowardthechimneyatleast1/4inchperfoot.It
mustnotleakandmustbefirmlysupported.Joinsectionswithatleasttwo
sheet-metalscrews.Supporteverysecondsectionwitha stovepipewire.
MINIMUMVENTPIPECLEARANCE
ALTERNATE POSITIONS
TOP
1
MUSTSLOPEUP
AT LEAST 1/
PER FOOT OF
HORIZONTALRUN
DRAWBAND
LAST PIECE
INSTALLED
I
I L
_,TIGHT. SMOOTH,
CORRECTLY SIZED.
I
I
t
I
&LEDIN
THIMBLE
TIGHT
DOOR
DRAFT REGULATOR
VANE
Woodandothercombustiblematerialsmustnotbecloserthan18"fromany BALANCEDWEIGHT
surfaceoftheventpipe.
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