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Preamble
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WHEREAS the operation of water cooled refrigeration and
other equipment for changing the dry bulb temperature or the humidity of air
has rapidly increased and now involves the use of water in quantities never
before anticipated, thereby placing unexpected burdens on the public water
supply system which are detrimental to other classes of water service.
AND WHEREAS, in the interest of the public and its water
supply system, it is necessary to
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regulate the use of water for such purposes and to require
conservation of water and the elimination of waste.
NOW THEREFORE BE IT RESOLVED, that the following regulations
shall apply to all water-cooled equipment installed for the purpose of reducing
the dry bulb temperature or decreasing the absolute humidity of air, whether
for comfort air conditioning, refrigeration, processing or whatever other
purposes.
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For the purpose of these regulations, the following terms shall have,
and shall be construed to have, the following meanings:
An installation for maintenance, by heat removal, of temperatures
which are not less than 60º Fahrenheit.
Any combination of equipment, whether compressor or other type, by
which heat is removed from the air and from which the accumulated or effluent
heat is wholly or partially removed by the use of water.
Includes a natural person, partnership, corporation or association.
Whenever used with respect to any penalty, the term "person" as applied to
partnership or associations, shall mean the partners or members thereof, and
as applied to corporations, the officers thereof.
For the purpose of these regulations, in no event shall the rated
capacity in tons be considered less than the following:
An installation for maintenance, by heat removal of temperatures
which are less than 60º Fahrenheit.
Any combination of apparatus, individual unit, group or collection
of units supplied with water through any single customer service pipe connected
to the public water system.
No person shall install, operate or use any equipment for air conditioning
or refrigeration which requires a supply of water from the system of the City
of Ithaca without first having procured written permit therefore from the
office of the Water and Sewer Division.
A.
Application for permit shall be made to the office of
the Water and Sewer Division and shall provide the following information:
(1)
Name and address of applicant.
(2)
Location of premises where installation is proposed.
(3)
Name and address of the owners of the premises.
(4)
Names of manufacturers of the units requiring water.
(5)
Manufacturer's identification and classification of the
refrigeration units.
(6)
Manufacturer's rating of maximum refrigerative capacity of the unit or units under the conditions of the planned installation. (Rating may be stated in tons/24 hours or BTU/hour). In the absence of the required manufacturer's maximum rating, the Superintendent may specify the tonnage of the installation at the ratings indicated in the definition of RATED CAPACITY IN TONS set forth in § 215-40; or, if these appear inadequate, then by whatever other measure of capacity appears to him to be proper.
(7)
Horsepower of compressor prime mover, if unit is compressor
type.
(8)
Where water conservation devices are required (to comply with § 215-46 hereof), the manufacturer's name, identification, classification and size of the conservation equipment.
(9)
Elevation and plan showing general piping arrangements
and details of all points of connection to building supply water (piping direct
to condenser units, makeup supply into tower fan, etc.).
(10)
Such additional information as shall be required by the
Water and Sewer Division.
B.
Application shall be signed by the owner or tenant, and
applications for installation shall designate a plumber duly qualified to
receive permits under other sections of these regulations.
A fee shall be paid at the time the application for inspection is filed
with the Plumbing Inspector, and shall be equal to the existing rate for a
new fixture under the Plumbing Code.
A.
Permits to install piping or connect equipment will be
issued at the office of the Water and Sewer Division, but only in the name
of licensed plumbers who are duly qualified to perform plumbing work in the
City of Ithaca in accordance with the plumbing Code.
B.
Within 48 hours following the completion of any work
authorized by permit, notice of completion and request for inspection shall
be returned in writing on the standard Plumbing Inspection blank, accompanied
by the inspection fee, by the plumber receiving the permit, to the office
from which the permit was obtained.
After final inspection and approval of the installation, a permit to
operate or use the equipment will be issued at the office of the Water and
Sewer Division in the name of the owner or tenant.
A.
Systems with a capacity of three tons or less shall not
use water directly or indirectly (except when used with conservation equipment)
from the public supply.
B.
Systems with a total capacity of more than three tons
but not exceeding five tons may use water directly from the public supply,
at a rate not exceeding 2.0 gpm per ton if the water temperature is 75º
Fahrenheit or less, or 3.0 gpm per ton if it is above 75º Fahrenheit,
provided that they are equipped with an automatic regulating valve which will:
C.
All systems having a total capacity exceeding five tons
shall be equipped with evaporative condensers, cooling towers, spray ponds,
or other water cooling equipment. This equipment shall be of sufficient capacity
to insure conformance with the requirements of Table I for makeup water when
operating under full loading at maximum summer temperature.
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Table I
Maximum Allowable Water Use
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Water Hardness
(ppm)
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Maximum Use
(gpm/ton)
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0 to 139
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0.1
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140 to 199
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0.15
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200 to 254
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0.2
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255 to 339
340 to 424
425 and over
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0.3
0.4
0.5
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A.
All installations shall be made in conformance with the
Plumbing Code and subject to the inspection of the Plumbing Inspector and
will include the following general protective measures.
B.
On installations which operate with the use of water
directly from the public supply system, every direct connection shall be equipped
with a suitable brass body, brass fitted check valve and vacuum breaker installed
in the branch supply line to each unit.
C.
Discharge and the connections for the disposal of waste
water in accordance with the Plumbing Code and Board of Public Works Regulations
regarding sanitary sewers.
D.
Cooling waters which are to be used for other purposes
shall be provided with free, above the rim discharge before entering other
equipment, otherwise permission shall be obtained in writing from the Plumbing
Inspector, approving the proposed connections and use.
E.
On installations other than those described above, there
shall be a physical break between the public water supply piping and the piping
of the installation, so arranged as to make back siphonage to the public water
supply system impossible.
Any permit which is issued under these regulations to operate or use
equipment may be revoked by the Water and Sewer Division for any one of the
following reasons:
A.
For new installations, these regulations shall be effective
upon publication. Publication shall be made in accordance with provisions
of any applicable laws, acts, opinions, ordinances or regulations.
B.
Existing installations shall be modified to conform to
the provisions of these regulations, applications to operate shall be filed
and permits shall be obtained. Modifications shall be completed and permits
obtained in accordance with the provisions of this subsection within six months
after adoption.
C.
Existing installations conforming to the provisions of these regulations in all matters except the conservation of water shall not be penalized under provisions of § 215-50 for failure to provide conservation for a period of one year after adoption. Such installations shall, however, be subject to all other provisions of the regulations, six months after adoption. In the event that a critical condition develops in the system, subsequent to the adoption of these rules and regulations, all installations not equipped to conserve water shall be subject to immediate discontinuance on orders of the Water and Sewer Division.
A.
Failure to comply with the above regulations shall be
sufficient cause to penalize the licensee by discontinuance of water service
for failure to correct the violation within 15 days after notification that
the violation exists.
B.
Licensed plumbers guilty of violation of any of the rules
and regulations herein shall be prohibited from securing further permits from
the Water and Sewer Division, and when willful violations warrant, charges
may be referred to the Examining Board of Plumbers seeking revocation of the
plumber's license.
All regulations, ordinances or parts of ordinances heretofore in effect
which are in conflict with, or which are inconsistent with, the provisions
of these rules and regulations, to the extent of their inconsistency are hereby
repealed.
The invalidity of any section, clause, sentence or provision of these
rules and regulations shall not affect the validity of any other part thereof,
which can be given effect without such invalid part or parts.
The Board of Public Works reserves the right to change by resolution
from time to time, the rules and regulations governing the installation and
operation of air-conditioning and refrigeration equipment.
