What are the requirements for air conditioning system condensate drain lines?
Condensate from air conditioning equipment and cooling coils shall be collected and discharged to an approved plumbing fixture or disposal area. Condensate shall not drain over a public way. Specific requirements are as follows: • Condensate must be piped to the sanitary system with an indirect connection into a properly trapped and vented plumbing receptor or directly into its tailpiece; or • Condensate may be piped to an approved drywell. When condensate is terminated at a drywell, it shall be an indirect connection to a properly constructed drywell. Handouts specifying drywell construction requirements are available at the Development Services Center. Drywells for draining large tonnage systems and for commercial and industrial projects must be engineered and included as part of the approved plans for the project. Additional requirements for condensate piping to consider are as follows: • Condensate drain lines shall slope not less then 1/8 inch per ft. or 1 percent slope toward the
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