FAQs
Yes. InnoFlue® Single Wall Commercial can be used for common venting and cascade applications involving multiple high-efficiency appliances. Systems must be properly sized and designed according to appliance manufacturer requirements and applicable codes.
InnoFlue® Single Wall Commercial requires a 3° slope (5/8" per foot) to help manage condensate within the vent system. Commercial condensate-management components, including tees and Tee Caps with drains, are available to help collect and drain condensate from the system.
Yes. InnoFlue® Single Wall Commercial is listed to UL 1738 and ULC-S636 for approved applications. Always verify that the specific vent configuration, appliance, and installation comply with applicable codes and the appliance manufacturer's requirements.
InnoFlue® Single Wall Commercial runs must be supported at intervals of 39" horizontally and 78" vertically. Additional support is required near directional changes, with support distances varying by vent diameter. Always follow Centrotherm's installation instructions for the specific system configuration.
InnoFlue® Single Wall Commercial is available in 6", 8", 10", and 12" diameters for larger commercial venting applications.
InnoFlue® Single Wall Commercial is designed for Category II and IV gas-fired appliances, including high-efficiency water heaters, condensing boilers, and 90+ furnaces. InnoFlue® is rated for flue gas temperatures up to 230°F (110°C).
Yes. Commercial InnoFlue® systems can be configured to connect multiple appliances to a common vent system. Tees and other components are available to accommodate common-vent and cascade configurations while helping manage condensate.
Yes. InnoFlue® commercial systems use dedicated support components, including support clamps and Base Supports. Support clamps are used for both vertical and horizontal installations, with spacing of 78" vertically and 39" horizontally
Commercial vent sizing depends on factors including appliance input, the number of appliances, vent diameter, system configuration, and vent length. Always follow the appliance manufacturer's installation instructions and applicable codes. Centrotherm can also provide assistance with capacity sizing and system layout for commercial applications.
A Base Support can support vertical sections of rigid InnoFlue® up to 164 feet (50 m) when installed according to Centrotherm's requirements.
Commercial boilers often require vent systems capable of handling high temperatures, positive vent pressure, and continuous acidic condensate exposure. In many commercial applications, multiple appliances may also be connected into a common venting system, which requires carefully engineered vent materials and sizing to maintain safe and efficient operation.
UL 1738 listed polypropylene vent systems are commonly used for both individual and common venting applications because they provide excellent corrosion resistance, lightweight installation, and long-term durability for condensing commercial boiler systems.
Polypropylene vent systems are available in larger diameters suitable for commercial installations and can support extended horizontal and vertical vent runs often required in multifamily, institutional, and light commercial buildings. Contractors and engineers frequently choose polypropylene because it is specifically designed for flue gas venting and tested for condensate exposure, pressure performance, and temperature resistance. When properly designed and installed in accordance with local codes and appliance manufacturer requirements, listed polypropylene vent systems can provide a safe, reliable, and code-compliant solution for commercial boiler venting and common vent applications.
UL 1738 listed polypropylene vent systems are commonly used for both individual and common venting applications because they provide excellent corrosion resistance, lightweight installation, and long-term durability for condensing commercial boiler systems.
Polypropylene vent systems are available in larger diameters suitable for commercial installations and can support extended horizontal and vertical vent runs often required in multifamily, institutional, and light commercial buildings. Contractors and engineers frequently choose polypropylene because it is specifically designed for flue gas venting and tested for condensate exposure, pressure performance, and temperature resistance. When properly designed and installed in accordance with local codes and appliance manufacturer requirements, listed polypropylene vent systems can provide a safe, reliable, and code-compliant solution for commercial boiler venting and common vent applications.
A Base Support is used to provide structural support for vertical InnoFlue® installations, particularly in chimneys and chases. Commercial Base Supports are available for 6" through 12" diameters and can support vertical vent systems up to 164 feet (50 m) when installed according to Centrotherm requirements.
Yes. InnoFlue® Single Wall Commercial requires a 3° slope, or approximately 5/8" per foot, to help direct condensate back toward the appliance or designated condensate collection point.