A.O. Smith Innovo 12-160, Installation, Service & Maintenance Manual

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Fig. Example concentric venting system
Caution
During installation, obey the instructions delivered with the sets of air supply components
and the flue gas discharge components. Make sure that the venting system does not
exceed the maximum number of 45º and 90º bends and the maximum pipe length.
Caution
Use a run-off of 50 mm per meter towards the water heater.
Refer to the table for the correct pipe dimensions of the C13 and C33 concentric systems.
Description Unit IR-12-160 to
IR 20-200 IR 24-245 to
IR 32-380
Diameter flue discharge/
air inlet mm/mm 80/125 80/125
Maximum length m 40 40
Maximum number of 45º and
90º bends - 8 8
c
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