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TFTN 085-199
4.4
Boiler Exhaust & Air-Intake Vent Pipe Connectors
The TFTN employs universal exhaust and air-intake connectors that accept PVC/CPVC or Polypropylene (or in the case of the
TFTN340-399, Stainless-Steel) special gas vent; see Figure 4-1.
Note: When inserting the vent pipe into the connector, verify that the gasket is lubricated and properly seated, and that
pipe ends are cut square and beveled at approximately 1/8 in. to avoid damaging or dislodging the gasket during installation.
Gasket Sealing – Failure to properly prepare the vent pipe and gasket before installation may cause
gasket seal failure resulting in property damage, serious injury or death.
PVC Exhaust Piping – When venting the exhaust with PVC, use the supplied CPVC Transition Pipe provided with the boiler;
insert the CPVC pipe into the exhaust connector and cement the other end to the PVC exhaust venting using a field
supplied PVC or CPVC coupling. See Figure 4-1.
DO NOT insert PVC pipe directly into the boiler exhaust connector, as it can deform from the
clamping force of the gear clamp. Failure to follow these instructions may result in gasket failure
and/or the dislodging of the exhaust vent from the connector, resulting in property damage, serious
injury or death.
Polypropylene Piping – TFTN085-285 exhaust and air-intake connectors accept approved 3 in. Polypropylene special gas vent
with 80 mm outside diameter. TFTN340-399 exhaust and ai- intake connectors accept approved 4 in. Polypropylene
special gas vent with 100 mm outside diameter.
Note: 4 in. Polypropylene with 110 mm outside diameter must be adapted to fit the boiler vent pipe connector using the
applicable field supplied adapter; see Table 4.2
Stainless-Steel Piping – TFTN340-399 exhaust and air-intake connectors accept approved 4 in. Stainless-Steel special gas vent
with a 4 in. outside diameter. TFTN085-285 exhaust and air-intake connectors do not accept Stainless-Steel vent; to vent
these models with Stainless-Steel, use the applicable field supplied adapter – See Table 4.2.
Failure to use the appropriate exhaust vent adaptor for the type of venting being used will lead to
flue gas leakage possibly resulting in property damage, Carbon Monoxide poisoning or death.
Follow the Special Gas Venting manufacturer's assembly instructions.
Polypropylene vent pipes & fittings, or Stainless-Steel vent pipes & fittings, together unless they
are of the same brand and type. Failure to follow these instructions may lead to flue gas leakage
possibly resulting in property damage, Carbon Monoxide poisoning or death.
Table 4-2 Appliance Adapters for Polypropylene and Stainless-Steel Venting
Vent Material
Polypropylene
Centrotherm (InnoFlue®)
DuraVent (FasNSeal®)
Stainless Steel
Notes:
1
TFTN085-285 exhaust and air-intake connectors are designed to directly accept 3 in. Polypropylene Special Gas Vent.
2
TFTN340-399 exhaust and air-intake connectors are designed to directly accept 4 in. DuraVent PolyPro® Polypropylene
Special Gas Vent, as well as 4 in. DuraVent FasNSeal and Z-Flex Z-Vent® Stainless Steel Special Gas Vent.
Exhaust vent piping must be supported to reduce strain on piping joints. Failure to follow these
instructions may result in result in damage, serious injury or death.
In Canada, the first 3 ft (915 mm) of exhaust vent piping must be readily accessible for inspection.
Venting Brand
DuraVent (PolyPro®)
Z-Flex (Z-Dens®)
Z-Flex (Z-Vent®)
Installation and Operation Manual
Adapter Part No.
TFTN085-285
1
NA
810005378
2SVSTTA03
DO NOT connect
TFTN340-399
2
NA
ISAA0404
2ZDCPVCG4
2
NA
17
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