Condensate
When the total vent system length is greater than 5 ft (1.52 m), condensate will form which could damage the water heater. For vent lengths greater than 5 ft (1.52 m), the condensate collector and a trap must be installed.
Recommended Vent/Air Intake Terminal Position
Terminals should be so positioned as to avoid products of combustion entering openings into buildings or other flues or vents.
Figure 14. Requirements for Vent/Air Intake Terminal Positions.
Table 8. Required Clearances for Venting.
*For clearances not specified in ANSI Z223.1 / NFPA 54 or CGA-B149, please use clearances in accordance with local installation codes and the requirements of the gas supplier .
**For other than Direct Vent Appliance, 4 ft (1.22 m) below or to side of opening; 1 ft (300 mm) above opening.
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