Takagi T-H3S-DV - -Exhaust vent (Stainless steel vent)-

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-Exhaust vent (Stainless steel vent)-
This is a Category IV appliance and must be vented accordingly. The vent system must be sealed airtight.
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160°F.Forbestresults,aventsystem
should be as short and straight as possible.
• The Indoor models are a Category IV appliance and must be vented accordingly with any 4” vent
approved for use with Category III/IV or Special BH type gas vent.
• The manufacturer recommends the NovaVent line. However, the following are also UL listed
manufacturers: ProTech Systems Inc. (FasNSeal), Metal-Fab Inc., and Heat-Fab Inc. (Saf-T Vent).
• Follow the vent pipe manufacturer’s instructions when installing the vent pipe.
• Themaximumlengthofexhaustventpipingmustnotexceed100ft.(30.5m)(deducting5ft.(1.5
m)foreachelbowusedintheventingsystem).Donotusemorethan5elbows.
• Whenthehorizontalventrunexceeds5ft.(1.5m),supporttheventrunat3ft.(0.9m)intervals
with overhead hangers.
Installaon
Installaon Manual
Diameter Max. No. of Elbows Max. Vertical and Horizontal (Total) Vent Length
4in.(102mm) 5 100ft.(30.5m)
*For each elbow added, deduct 5 ft. (1.5 m) from max. vent length.
Excludes vent terminators, termination elbows, or rain caps.
No. of Elbows Max. Vertical or Horizontal Vent Length
0 100ft.(30.5m)
1 95ft.(29.0m)
2 90ft.(27.4m)
3 85ft.(25.9m)
4 80ft.(24.4m)
5 75ft.(22.9m)