NTI TFTN - Vent Pipe Material

Installation and Operation Manual TFTN 085-199
18
Figure 4-1 Exhaust & Air-Intake Connections
4.5 Vent Pipe Material
Table 4-3 Acceptable Exhaust and Air-Intake Vent Pipe Material
Items
1
Materials
2, 3
Venting System Standards
Exhaust and Air-Intake materials
installed on gas fired appliances in
CAN/US must meet the specifications
provided in this Table. Failure to
comply could result in fire, serious
injury or death.
United States
Canada
Vent Pipe
and
Fittings
PVC – DWV
Schedule 40/80
UL-1738 or
ANSI/ASTM D2665
ULC S636
PVC Schedule 40/80
UL-1738 or
ANSI/ASTM D1785
CPVC Schedule
40/80
UL-1738 or
ANSI/ASTM F441
Stainless-Steel (SS)
UL-1738
Polypropylene (PP)
UL-1738 or ULC S636
Pipe
Cement
PVC
ANSI/ASTM D2564
CPVC
ANSI/ASTM F493
Primers
PVC / CPVC
ANSI/ASTM F656
Notes:
1
Refer to Tables 4-4 and 4-5 for Allowable Vent Size & Length.
2
PVC venting (exhaust and air intake) is not permitted within the Closet/alcove of a Closet/alcove installation.
3
The Air Intake does not require high temperature pipe material; ABS and PVC Foam Core piping is acceptable. Check
applicable local codes for acceptable materials.
The use of cellular core PVC (ASTM F891), cellular core CPVC, or Radel® (polyphenolsulfone) in the
exhaust venting system is prohibited. Failure to follow these instructions may result in property
damage, personal injury, or death.
Covering non-metallic exhaust vent pipe and fittings with thermal insulation is prohibited. Failure
to follow these instructions may result in property damage, personal injury or death.
TFTN085-285
TFTN340-399
Air-Intake
Exhaust
Air-Intake
Exhaust
CPVC
Transition
Pipe*
CPVC
Transition
Pipe*
* CPVC Transition Pipe (included) is
mandatory when venting with PVC.