2500 Owner’s Operation and Instruction Manual

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12 Ussc

Combustible Wall Chimney Connector Pass-Throughs

Method A. 12” (304.8 mm) Clearance to Combustible Wall Mem-

ber:

Using a minimum thickness 3.5” (89 mm) brick and a 5/8”

(15.9mm)minimumwallthicknessclayliner,constructawallpass-

through.  The clay liner must conform to ASTM C315 (Standard

SpecicationforClayFireLinings)oritsequivalent.Keepamini-

mumof12”(304.8mm)ofbrickmasonrybetweentheclaylinerand

wallcombustibles.Theclaylinershallrunfromthebrickmasonry

outersurfacetotheinnersurfaceofthechimneyuelinerbutnot

pasttheinnersurface.Firmlygroutorcementtheclaylinerinplace

tothechimneyueliner.

Method B. 9” (228.6 mm) Clearance to Combustible Wall Member:

Usinga6”(152.4 mm)insidediameter, listed,factory-builtSolid-

Pakchimneysectionwithinsulationof1”(25.4mm)ormore,build

awallpass-throughwithaminimum9”(228.6mm)airspacebe-

tweentheouterwallofthechimneylengthandwallcombustibles.

Usesheetmetalsupportsfastenedsecurelytowallsurfacesonall

sides,tomaintainthe9”(228.6mm)air space.  When fastening

supportstochimneylength,donotpenetratethechimneyliner(the

insidewalloftheSolid-Pakchimney).TheinnerendoftheSolid-

Pakchimneysectionshallbeushwiththeinsideofthemasonry

chimneyue, and sealed witha non-water soluble refractoryce-

ment.Usethiscementtoalsosealtothebrickmasonrypenetra-

tion.

Method C. 6” (152.4 mm) Clearance to Combustible Wall Member:

Startingwithaminimum24gage(.024”[.61mm])6”(152.4mm)

metalchimneyconnector,andaminimum24gageventilatedwall

thimblewhichhastwoairchannelsof1”(25.4mm)each,construct

awallpass-through.Thereshallbeaminimum6”(152.4)mmsep-

arationareacontainingberglassinsulation,fromtheoutersurface

ofthewallthimbletowallcombustibles.Supportthewallthimble,

andcover itsopeningwitha24-gage minimumsheetmetal sup-

port.Maintainthe6”(152.4mm)space.Thereshouldalsobea

supportsizedtotandholdthemetalchimneyconnector.Seethat

the supports are fastened securely to wall surfaces on all sides.

Makesurefastenersusedtosecurethemetalchimneyconnector

donotpenetratechimneyueliner.

Method D. 2” (50.8 mm) Clearance to Combustible Wall Mem-

ber: Start with a solid-pak listed factory built chimney section at

least12”(304mm)long,withinsulationof1”(25.4mm)ormore,

andaninsidediameterof8”(2inches[51mm]largerthanthe6”

[152.4 mm] chimney connector). Use this as a pass-through for

a minimum 24-gauge single wall steel chimney connector. Keep

solid-paksectionconcentricwithandspaced1”(25.4mm)offthe

chimneyconnectorbywayofsheetmetalsupport plates at both

endsofchimneysection.Coveropeningwithandsupportchimney

sectiononbothsideswith24gageminimumsheetmetalsupports.

Seethatthesupportsarefastenedsecurelytowallsurfacesonall

sides.Makesurefastenersusedtosecurechimneyueline.

NOTES:

1.Connectorstoamasonrychimney,exceptingmethodB,shallextendinonecontinuoussection

throughthewallpass-throughsystemandthechimneywall,tobutnotpasttheinneruelinerface.

2.Achimneyconnectorshallnotpassthroughanatticorroofspace,closetorsimilarconcealed

space,oraoor,orceiling.

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Owner’s Operation and Instruction Manual - Page 12