All existing installations of refrigeration equipment, air conditioning or refrigeration and air-conditioning equipment installed on any premises and requiring the use of water supplied by the Township water system or derived from a well shall be subject to the rules and regulations prescribed in this article.
No new installation of refrigeration equipment, air-conditioning or refrigeration and air-conditioning equipment requiring the use of water supplied by the Township or derived from any well shall be installed on any premises until a permit authorizing such installation has been issued by the Township Engineer.
Applications, in duplicate, on forms furnished by the Township Engineer for permits for refrigeration, air-conditioning or refrigeration and air-conditioning equipment to be installed shall specify the information requested on the application and shall be accompanied by the fee as provided in Chapter A565, Fees. One approved copy of the application will be returned to the applicant to serve as a permit.
All installations of any individual or collective system of refrigeration equipment, air-conditioning equipment or refrigeration and air-conditioning equipment in any premises for a single consumer shall be installed under the following specifications:
A. 
All new installations of any individual or collective system of refrigeration equipment, air-conditioning equipment or refrigeration and air-conditioning equipment of three tons and over shall be equipped with a water conserving device, such as economizer, evaporative condenser, water cooling tower or similar apparatus, which device shall not consume, for makeup purposes, in excess of 5% of the consumption of water that would normally be used without such device, except as provided in § 519-38.
B. 
All new installations of refrigeration equipment, air-conditioning equipment or refrigeration and air-conditioning equipment of under three tons and not using recirculated water shall be provided with an automatic water-supply regulating device so as to limit the flow of water in relation to the condenser temperature reduction requirements of the apparatus. In no case shall the equipment use in excess of 1 1/2 gallons per minute per ton capacity.
C. 
If two or more units, which in the aggregate total three tons or more, are installed to serve the same building or premises, said units shall be subject to the same requirements applicable to a unit or equipment of three tons or more, as provided in this article.
Each direct water connection to a refrigeration unit, air-conditioning unit or refrigeration and air-conditioning unit using water for cooling purposes and which is connected with the Township water supply system shall be equipped with a vacuum breaker, except in installations where the water supply piping has no contact with refrigerant. This will be the case where two substantial and independent wall thicknesses of metal separate the refrigerant from the Township water supply system.
Refrigerating units, air-conditioning units or refrigerating and air-conditioning units with a capacity of more than 20 pounds of refrigerant shall be provided with a relief valve installed on the outlet side of the vacuum breaker of the water supply connection, such relief valve being set at five pounds above the maximum water pressure at the point of installation.
All installations of any individual or collective system of refrigeration equipment, air-conditioning equipment or refrigeration and air-conditioning equipment of three tons and over shall be equipped with a water conserving device as provided in § 519-35. The Township Engineer may permit a diffusion device which will return the water in pure and uncontaminated condition, without loss or waste, back into the ground instead of the device required under § 519-35. If permission is granted for such a diffusion device, it shall be the responsibility of the building owner to ensure that no water is wasted or contaminated thereby. No diffusion well or recharge basin shall be permitted under this section unless it is assured that all water used in such refrigeration or air-conditioning system will be effectively returned in a pure and uncontaminated condition after use to the subterranean sources from which the water is obtained. No connection to storm or sanitary sewer shall be permitted under this section.