Bradford White IGI-180R series Installation And Operating Instruction Manual page 37

Mounting the vent system
Figure 39
Vent connections must be firmly pressed together so that the gaskets form an airtightseal. Secure the
system with the supplied vent pipe clamp or perforated hanger iron.
NOTE
When the total vent system length is greater than 5ft. (1,52 m), condensate will form which could damage
the water heater. For vent lengths greater than 5ft. (1,52 m), a condensate collector and trap must be
installed.
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