Takagi T?K4?IN - EXHAUST VENTING; VENTING ILLUSTRATIONS

Installation
13│Page
‐Exhaustventing‐
(FortheT‐KJr2‐IN,T‐K4‐IN,&T‐D2‐INmodels)

ThisisaCategoryIIIapplianceandmustbeventedaccordingly.Theventsystemmustbesealedairtight.
Allseamsandjointswithoutgasketsmustbesealedwithhighheatresistantsilicone sealantorULlisted
aluminumadhesivetapehavingaminimumtemperatureratingof350°F.Forbestresults,a
ventsystem
shouldbeasshortandstraightaspossible.
• ThiswaterheaterisaCategoryIIIapplianceandmustbeventedaccordinglywithany4”vent 
approvedforusewithCategoryIIIorSpecialBHtypegasvent.
• Followtheventpipemanufacturer’sinstructionswheninstallingthe
ventpipe.
• Donotcommonventthisappliancewithanyotherventedappliance(Donotterminatevent
into a chimney.If the vent must go through the chimney, the vent must run all the way
throughthechimneywithCategoryIIIapprovedorSpecialBHventpipe).
• When
the horizontal vent run exceeds 5 ft., support the vent run at 3 ft. intervals with
overheadhangars.
• Themaximumlengthofexhaustventpiping mustnotexceed50ft.(deducting5 ft.foreach
elbowusedintheventingsystem).Donotusemorethan5elbows.

Diameter Max.No.ofElbow Max.Vertical&Horizontal(Total)VentLength
4” 5 50ft.
*Foreachelbowadded,deduct5ft.frommax.Ventlength.
No.ofElbows Max.VerticalorHorizontalLength
0 50ft.
1 45ft.
2 40ft.
5 25ft.
‐VentingIllustrations‐
(FortheT‐KJr2‐IN,T‐K4‐IN,&T‐D2‐INmodels)

HorizontalInstallationDiagram
VerticalInstallationDiagram
SidewallVent
Terminator
Wall
BackflowPreventer*
VerticalCondensationDrain**
Fordetailsoftheoptionalitems,refertothe InstallationmanualforeachOptionalitem.
Roof
VerticalCondensation
Drain**
RoofFlashing
RainCap
BackflowPreventer*