199227Original to City Clork Council File No. 199227— Ordinance No.
11847 —By Mrs. Donald M. DeCourcy
_; r — Bernard T. Holland —Milton Rosen
O R D I N A r An ordinance establishing a demand
charge for certain water cooled air
conditioning rt4f equipment and regulating
rJl7rrFJ
PRESENTED BY 6✓�� ORDINANCE NO.
Ai>, ordinance establishing a demand charge for certain water cooled air
conditioning equipment and regulating the installation and use of non - conserving water
cooled air conditioning equipment. This'is an emergency ordinance rendered necessary for
the preservation of the public peace, health and safety.
THE COUNCIL OF THE CITY OF SAINT PAUL'DOES ORDAIN:
Section 1. That there shall be included in the water rates a demand
charge applicable to all water cooled air conditioning equipment used for human comfort
which-are connected in any manner to the public water supply system with the following
exceptions: a) Process cooling which is designed to be for 650 Fahrenheit dry bulb
thermometer or. lower with the equipment used primarily for other than human comfort.
b) approved water conserving type air conditioners as hereinafter defined.
Section 2. A. An air conditioning system shall mean an individual unit,
group or collection of units, or any combination of equipment installed to service one
consumer, and connected directly or indirectly to the consumer's service.
B. Installed capacity shall mean the total number of rated tons capacity in each air
conditioning system.
C. The rated capacity in tons of each air conditioning system shall be the greatest as
computed by the following methods:
1. The manufacturers rating in-tom per 24 hours of equivalent ice making capacity.
2. The hourly B:T.U, rating of heat removal capacity divided by 12,000.
z N
`., 3. The horsepower rating of the motor required to drive the refrigerant compressor.
> 4. Ninety (90) percent of the horsepawer gating of the motor driving both the
Ocompressor and fan.
5. Where none of these ratings are available, or where a question arises as to the
the rating shall be determined b measurement of the
^ accuracy of any rating, i g Y
1.i. power input to the compressor motor, rate of fuel consumption, or other suitable
CL means as determined by the department.
Q I _ Section 3. All air conditioning systems installed or replaced after
the effective date of this ordinance and which are connected directly or indirectly
with the public water systems must beequipped with water conserving and water
regulating devices as hereinafter provided for.
Section 4. All air conditioning systems installed prior to the
effective date of this ordinance and tah.ich are connected directly -or indirectly with
the public water system and which are of the non = conserving type and having the
regulating devices as hereinafter provided for shall pay a demand charge on each rated
ton capacity of the system as follows:
For 19604 no charge
For 1961, $10 per rated ton
For 1962, $15 per rated ton
For 1963 and each subsequent year,
Yeas C6uncihnen Nays
DeCourcy
Holland
Loss
Mortinson
Peterson
Rosen
Mr. President (Vavoulis)
Attest:
City Clerk
1M 5 -60 s
$20 per rated ton per year
Passed by the Council
Approved:
Mayor
Favor
A gainst
Orl;inal to City Clerk
PRESENTED BY
Page 2
ORDINANCE ,
COUNCIL FILE NO. 1.99227
ORDINANCE NO.
Section 5. The demand charge shall be in addition to the current 1
charges for water used and shall be billed annually on or about May I of each year an
shall be due and payable without penalty on the due date indicated on the bill, and
shall be subject to all the rules and regulations of the department in regard to the
collection of water bills., including penalties for non - payment thereof.
Section 6. Air conditioning systems subject to the demand charge
which are permanently disconnected from the public water system or which are converted
to the approved water conserving type during the cooling season (from May 1 to October 1)
shall be subject to the demand charge as follows:
Disconnected or
converted
prior to May I
- no charge
Disconnected or
converted
between May I and July I
- 1 /4.annual
charge
Disconnected or
converted
between July 1 and.August I -
1/2 annual
charge
Disconnected or
converted
between August I and October I
- 3/4 annual
charge
After September
30
-
entire annual charge
Any system which is temporarily out of service will be credited for such period computed
on the per diem ratios to the air conditioning season of 153 days, provided that such
credit for such temporary or permanent disconnection or conversion will date from the
time that written notices of such are received by the department..
Section 7, Users of air conditioning equipment of the approved water
conserving type may, if ,they so elect, use water from the public water system as the
cooling medium without.recirculation between October 1 and May 1 without causing such
equipment to be_.subject to'the demand... charge.
Section 8.. Approvedt'water conserving type-air conditioner shall be
operated rand installed as follows,`:
A. With a_,cooling tower,,, =evaporation condenser, spray pond,, or other equipment which.
shall directly or indirectly cool the refrigerants and
B. So as to use water from the public water system only for make --up water to replace
water lost by evaporation or by flushing the equipment, and
C. So as to have a regulating valve or device which limits the average use of water from
the public supply to an average of less than and not to exceed a maximum of two - tenths (0.2)
gallons per minute (12 gallons per hour) per ton of cooling capacity when in operation,•and
D. Without a piping connection to permit operation of the air conditioner unit by direct
use of water from the public supply either in conjunction with or in place of such cooling
tower, evaporation condenser, spray pond, or other recirculating and heat exchange equipment
during the months of May through September.
Section 9. Any air conditioning system with a total rated capacity of
three (5) tons or less shall not be subject to the demand charge, provided however that it
be equipped with an approved and operative automatic regulating valve or device which will
throttle the flow of water to the momentary requirements of the system.
Section 10. The use of water from the public water system for any non -
conserving air conditioning system, regardless of size, shall not exceed a rate of one and
NOV 1 1960
Yeas Councilmen Nays Passed by the Council
DeCourcy
U-11sind-
Loss O In Favor
Mortinson
Peterson A gainst
Rosen
Mr. President (Vavoulis) Approved: NOV 1 1960
-
Attest:
City Clerk Mayor
1M 5 -60 u 8 >.
Orlsinel to City Clerk
ORDINANCE Page 3 227
COUNCIL FILE NO.
�''
PRESENTED BY ORDINANCE NO.-
one -half (1j) gallons per minute per ton of refrigeration under maximum summer conditions,
and a water regulating valve or device limiting the use of water to the above maximum rate
shall be installed and be in operation within ninety (90) days after the effective date of
this ordinance.
Section 11. Permits shall be required for the installation of al l new
air conditioning systems as otherwise provided for in the city ordinance. All piping for
supplying water from the public water system to any air conditioning system and from the
unit to the sewer system shall be installed as required by the city ordinances. All water
piping shall be valved at the initial point of the air conditioner or ahead of the control
device for the system. X
s :_
r "4
Section 12.' This ordinance shall be included in the Legislative Code
and given an appropriate number therein,.
Section 13. This ordinance is hereby declared to be an emergency
ordinance rendered necessary for the preaervation:.of the public peace, health and safety.
Section 14. This ordinance shall take effect and be in force from and
after its passage, approval and publication.
- ---- -_zr1-
Yeas Councilmen
DeCourcy
Iii 6"
Loss
(f� Mortinsan
Peterson
Rosen
Mr. President (Vavoulis)
Nays
59
Attest
City Clerk
IM s -so qW,8
Nov 1 1960
Passed by the Council
Favor
d Against
yap i 196®
Approved:
Mayor
4�c O
s 2n
'f
Laid over t
3rd and app f U doptedL
Yeas a s v 1 Yeas Nays
DeCourcy DeCourcy
u.,ikm H
Loss Loss
Mortinson n Mortinson
Peterson I `J Peterson
Rosen Rosen
Mr. President Vavoulis Mr. President Vavoulis
�.
199227