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Page | 13
2.0ft.
18.0in.
3.0ft.
INSTALLATION
Approved Venting Method 3:InternalorExternalMasonryChimneySystem
10
ft.
Chimneylinercross‐sectional
area(LengthxWidth)must
be
nolargerthantwicethecross‐
sectionalareaofthefluecollar
(2x28.27in
2
=56.55in
2
). If
chimneylinerislargerthan
56.55in
2
,reliningwitha5.5”
or6.0”linerisrequired
The10‐3‐2Rule:Thechimneysystem
mustterminate3.0ft.abovethepoint
whereitscenterlinepassesthroughthe
roofANDthechimneymustterminate
2.0ft.aboveanypartofthedwelling
withina10ft.radiusofthechimney.
ChimneyConnector
(SingleorDoubleWall)
MasonryThimblewith
properclearanceto
combustibles
AshCleanoutsmust
haveanairtightsealto
preventweakdraft.
•
Followtheruleslistedaboveconcerningmaximumpermissiblefluelinersize;installingthisunitonmasonry
chimneysexceeding56.55
in
2
incross‐sectionalareawillresultindecreaseddraftandthepotentialforpoorunit
performance.
•
Usethreesheetmetalscrewsateachsinglewallchimneyconnectorjoint(checkmanufacturer’s
recommendationswhendoublewallchimneyconnectorisused).
•
Drillthreeholesinthefluecollaroftheunitandattachthechimneyconnectortotheunitusingsheetmetal
screws(holesshouldbepre‐drilledinfluecollarfromfactory).
•
Avoidnumerouselbowsandexcessivehorizontalruns asbothwillleadtopoordraftandincreasedcreosote
accumulation. Horizontalrunsofchimneyconnectormustneverexceed4.0ft. andtheoveralllengthofthe
chimneyconnectormustnotexceed8.0ft.
•
Atightsealatthethimbleiscrucialforproperunitperformanceandtocreateasafeinstallation. Usetheproper
adapterdesignedforconnectingsingle ordoublewallchimneyconnectortoamasonrythimble.
•
Haveexistingmasonrychimneysinspectedforsafetyandproperclearancestocombustiblesbeforeputtingthem
intoservice;aqualifiedchimneysweepcanperformthisinspection.
•
Externalmasonrychimney s oftensuffercolddowndraftsandpoordraftperformanceevenwhentheymeetthe
cross‐sectionalarearules. Inthiscase,a6.0”insulatedlinermaybenecessary.
Please Note:Installationdiagramsareforreferencepurposesonlyandarenotdrawntoscale,normeanttobeusedasplans
foreachindividualinstallation. Pleasefollowallventingsystemrequirements,maintaintherequiredclearancesto
combustibles,andfollowalllocalcodes.
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