For roof top venting of multiple boiler sets, group all intake terminals together for a common
penetration through a custom cap. Alternatively, place close together using commonly
available pipe flashing. Similarly, group the exhaust pipes and place the two separate
groups of pipes at least 3' apart (the closest intake and exhaust pipes shall be 36", or more,
apart). Use the same 12" (minimum) vertical separation for all termination options. For
alternate group terminations, contact the IBC Factory for written guidance.
Roof top termination kits are approved for use with the boiler model. Installation of the
vertical roof top termination must follow the installation instructions supplied with the venting
material manufacturer. Care must be taken to install the termination kit a minimum horizontal
distance of 10' (305 cm) away from any portion of the building and a minimum of 2' (61 cm)
above the roof line plus the anticipated snow line.
3.5.7 Sidewall vent termination
Caution
Vent termination clearances in this section are code minimum, or IBC recommended minimum
requirements, and may be inadequate for your installation. Building envelope details must be
examined carefully. Take action to avoid moisture entering building structures. Serious structural
damage may occur if adequate precautions and clearances are not allowed for. These
precautions apply to neighboring structures as well as to the structure the boiler(s) are installed
in.
3.5.7 Sidewall vent termination
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