Use and Care Manual

507713-01 Page 17 of 32Issue 1623
Capacity of Type B Double Wall Vents with Type B Double Wall Connectors
Serving a Single Category I Appliance
Table 3
NOTE: Single appliance venting congureations with zero lateral lengths are assumed to have no elbows in the vent system. For all other vent
congurations, the vent system is assumed to have two 90 ° elbows. For each additional 90° elbow or equivalent (for example two 45° elbows equal
one 90° elbow) beyond two, the maximum capacity listed in the venting table should be reduced by 10 percent (0.90 x maximum listed capacity).