All drainage connections and water supply connections on air-conditioning equipment shall meet the requirements of this chapter. Before installing any water-supplied air-conditioning equipment, a permit therefor shall be obtained from the Plumbing Subcode Official.
All hot water storage tanks directly heated shall be provided with a temperature relief and pressure relief valve, guided to a sink or terminating at the floor, so as to avoid the possibility of scalding. All such automatic gas heaters or oil heaters shall be connected with a flue to the outer air.