FAQs
InnoFlue® is approved for gas-fired Category II and IV appliances and is suitable for vertical or horizontal venting in new or retrofit installations, including chimneys, chases, and through-wall terminations. InnoFlue® Poloprophyline also meets UL-1738 code.
Connector Rimgs are required for an installation of 2″ through 5″ diameter InnoFlue® to be UL-1738 and ULC-S636 compliant. Centrotherm strongly recommends the use of Connector Rings on all installations. Diameters 6″ and larger do not require the use of Connector Rings.
InnoFlue® Polypropylene Special Gas Vent Systems can be field cut to length using a hacksaw and miter box or equivalent. InnoFlue® must be cut on the male end of the pipe, preserving the socketed (female) end. After making a cut, the end can be beveled at the contractor’s discretion. The end must be deburred using a standard deburring tool or sand paper.
Yes, the exterior of InnoFlue® can be painted. Please follow the surface preparation specified by the paint manufacturer.
Yes. For rooftop terminations, follow flashing and sealing instructions. Vertical terminations over 59” above the roof line must be supported with guy wires or braces.
Not directly. For underground applications, InnoFlue® must be installed inside a larger diameter, direct-bury-rated pipe. The vent must be pitched, supported, and allowed to expand/contract inside the sleeve.
Yes. Apply Centrocerin (water-based lubricant) or water to the male end to ease insertion into the female socket.
Use Centrotherm-supplied support brackets when possible. Horizontal runs must be supported every 39" (1 m); vertical runs must be supported every 78" (2 m). Directional changes (elbows/tees) should be supported within 12".
A rain cap is not required, but bird screens are recommended and may be mandated by local codes.
The polypropylene material has inherent insulating properties. For extreme cold outdoor environments, mineral wool and aluminum cladding may be used.
Yes. All diameters of InnoFlue® SW Rigid components are UV stabilized and suitable for exterior installation. Optional black components are available in 2" and 3" for aesthetic preference or enhanced performance.
No Solvents or Glues Required, Faster Installation Time, Superior Temperature Resistance, Environmentally Friendly & Safer, Lightweight & Durable, Flexible System Options.
Maintain a minimum of 12" from the termination to grade or anticipated snow level. Do not extend more than 12" from the exterior wall. Follow local codes for specifics.
InnoFlue® is sold in effective lengths of 1′, 2′, 3′, 6′ and 10'. Effective length is the distance between the male end and the beginning of the female socket. Overall length includes the socket. When assembling/laying-out a system, always utilize the effective length.
The maximum continuous vertical vent length is 164’ (50m).
InnoFlue® is designed to withstand flue gas temperatures up to 230∘F (110∘C).
- InnoFlue® SW Residential (diameters 2"-5") requires a slope of 1° or 1/4″ per foot.
- InnoFlue® SW Commercial (diameters 6"-12") requires a slope of 3° or 5/8″ per foot.
A Base Support must be used for any vertical run that exceeds 10 inches when not supported by a support or Connector Rings.
InnoFlue® Polypropylene Special Gas Vent Systems are a gasketed system and does not use any primers or glue. Slope ensures that acidic condensates do not come in contact with the gasket.
InnoFlue® Polypropylene Special Gas Vent Systems are intended for use on condensing heating appliances. Condensing appliances generate one gallon of condensate per hour per hundred thousand BTUs. A pitched system ensures that condensate does not build up inside the vent system. Pooled condensate creates back pressure and leads to the forced shut down of the heating appliance.
InnoFlue's® gasket technology allows for the rapid installation of the system. InnoFlue® can be installed without roughing in the system or penciling the elbow locations as InnoFlue® components can be rotated in place and disassembled. The use of gasketed vent systems reduce installation time by up to 75% when compared to glued systems.
Heating appliances connected to InnoFlue® can be fired upon completion of the vent system unlike glued systems which require a 24-hour curing period.
Heating appliances connected to InnoFlue® can be fired upon completion of the vent system unlike glued systems which require a 24-hour curing period.