[Added 4-28-1959]
Henceforth no refrigeration equipment or air-conditioning
equipment requiring the use of water supplied by the Water District
No. 1 of New Castle, New York, shall be installed within the district
unless a permit authorizing such installation shall have been issued
by the Superintendent of the water district.
Henceforth all installations of any individual
or collective system of refrigeration or air conditioning in any premises
within the district for a single consumer shall be made only in accordance
with the following specifications:
A.
Installations with a capacity of three tons or more
shall be equipped with a water-conserving device, such as an economizer,
evaporative condenser, water-cooling tower or similar apparatus, which
device shall not consume for makeup purposes in excess of 5% of the
consumption that would normally be used without such a device.
B.
Installations of such equipment under the capacity
of three tons 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, and in no such
case shall the equipment use in excess of two gallons per minute for
each ton of capacity.
C.
Each direct water connection to any such equipment
using water district water for cooling purposes shall be equipped
with an approved backflow preventer device, except in installations
where the water supply piping has no contact with the refrigerant.
For the purposes thereof, the water supply shall be deemed to have
no contact with the refrigerant when such supply is separated from
the refrigerant by two substantial and independent wall thicknesses
of metal.
[Amended 6-25-1974]
D.
Any such refrigerating or air-conditioning unit with
a capacity of more than 20 pounds of refrigerant shall be provided
with a relief valve installed on the outlet side of the check valve
of the water supply connection, which relief valve shall be set at
five pounds above the maximum water pressure at the point of installation.
The provisions of this article shall be interpreted
and administered in accordance with the following:
A.
The term "air conditioning," as used herein, applies
to that equipment used primarily for human comfort cooling, which
equipment shall be considered on the basis that one compressor motor
horsepower is equal to one ton of refrigeration.
B.
Equipment used for a purpose other than air conditioning
shall be considered on the basis that one compressor motor horsepower
is equal to 0.6 of a ton of refrigeration.
C.
Refrigeration or air-conditioning equipment using
illuminating gas for energy shall be rated on the basis that one ton
is equal to the removal of 12,000 British thermal units per hour with
an evaporating temperature of 5° F. and a condensing temperature
of 86° F.
