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5913 GI/202 3 (1) रजिस्ट्री सं. डी.एल.- 33004/99 REGD. No . D. L. -33004/99
EXTRAORDINARY
PART II —Section 3 —Sub-section ( ii)
PUBLISHED BY AUTHORITY
No. 3924] NEW DELHI, MON DAY , SEPTEMBER 18, 2023/ BHADRA 27, 1945
CG-DL-E-19092023-248822
<260 4.2
>=260 और<530 4.7
>=530 और <1050 5.0
>=1050 और <1580 5.2
>=1580 5.6
<260 2.4
>=260 2.6
<260 4.80 5.20 5.60 6.10 6.60
>=260 एिं <530 5.00 5.60 6.20 6.80 7.40
>=530 एिं <1050 5.50 6.10 6.70 7.40 8.20
>=1050 एिं <1580 5.80 6.50 7.20 7.90 8.70
>=1580 6.00 6.70 7.40 8.20 9.00
<260 3.00 3.30 3.60 4.00 4.40
>=260 3.10 3.50 3.90 4.30 4.70
MINISTRY OF POWER
NOTIFICATION
New Delhi, the 18 th September 2023
S.O. 4088(E).—In exercise of the powers conferred by clause (a) of section 14 of the Energy Conservation
Act, 2001 (52 of 2001), the Central Government in consultation with the Bureau of Ener gy Efficiency, hereby
specifies the energy consumption standard for Chillers, namely: –
(1) Every liquid chilling packages (chillers) of all types and sizes of the vapour compression type covered under the
scope of IS 16950 with all amendments used for spac e cooling with rated voltage up to and including 250 V, 50 Hz
AC, for single phase and up to and including 400V, 50Hz AC for three phase power supply being manufactured,
commercially purchased, imported or sold in India shall, -
(a) meet the cooling capacity an d power consumption in line with clause 11.4.1 and 11.4.2 as specified in IS
16950 with all amendments.
(b) meet construction and safety requirements as per clause 5.1 and 5.2 of IS 16590 with all amendments.
(c) Meet the prequalification criteria wherein every mo del shall achieve minimum coefficient of performance in
accordance with sub -paragraph (1) of paragraph (3).
2. (1) Definitions: For the purpose of this notification, the expressions, –
(a) “Application Rating” means a rating based on application rating conditio ns other than standard rating
conditions;
(b) “Air Cooled Condenser” means a refrigeration system component that condenses refrigerant vapour by
rejecting heat to air circulated over its heat transfer surface causing a rise in the air temperature and sub -
cooli ng of the refrigerant may occur as well;
(c) “Basic Model Group” is a set of models that share characteristics which allow the performance of one model
to be representative of the performance of other models within the group. Within a given range of cooling
capacity and a Basic Model Group shall comprise of chiller models, lying in the same star level band with
similar energy performance in terms of star level and range of Indian Seasonal Energy Efficiency Ratio
value.
(d) “Coefficient of Performance” means the ratio of the cooling capacity in kilo watts to the total power input in
kilo watts. Definition of coefficient of Performance relates to chiller unit only;
(e) “Condenser” means a refrigeration system component which condenses refrigera nt vapour. Sub -cooling of
the refrigerant may occur as well;
(f) “Condenser Heat Rejection Capacity” means the heat removed by the heat transfer medium of the condenser
per unit of time (kilowatt);
(g) “Cooling Capacity” means the heat given off from the liquid t o the refrigerant per unit of time, (kilowatt);
(h) “Indian Seasonal Energy Efficiency Ratio” is the ratio of the total annual amount of heat that the equipment
can remove from the indoor air when operated for cooling in active mode to the total annual amount of
energy consumed by the equipment during the same period;
(i) “Liquid -Chilling Packages (chillers)” means a refrigeration machine using the vapour compression cycle.
(j) “Liquid Refrigerant Temperature” means the temperature of the refrigerant entering the expa nsion device
(°C);
(k) “Performance Rating” means the performance data over the operating range of the unit at various load in the
form of performance curves or catalogue or output from a computer selection code;
NOTE: The published ratings are the ratings de clared by the manufacturer in any form as defined.
(l) “Standard Rating” means a rating based on standard rating conditions;
(m) “Total Power Input of the System" means power input of all components of the unit in operation.
(n) “Water -Cooled Condenser” means a compo nent which utilizes refrigerant -to-water heat transfer means,
causing the refrigerant to condense and the water to be heated and sub cooling of refrigerant may occur as
well:
Note: For any dispute the definitions given in IS 16590 with all amendments shall prevail.
(2) Words and expressions used herein but defined in the Bureau of Indian standard shall have meanings,
assigned to them in the Indian Standard 16590 with all amendments.
3. Pre-qualification criteria and Star rating plan. –(1) To become eligible for star rating given under sub -paragraph (3)
and every chiller shall meet the minimum coefficient of performance across all star level as provided in Table 1 and
Table 2 for water cooled and air -cooled condenser chiller category respectively. -
Table1
Minimum COP for water cooled condenser (for 100% Load)
kW of cooling COP required
<260 4.2
>=260 &<530 4.7
>= 530 &<1050 5.0
>=1050 &<1580 5.2
>=1580 5.6
Table 2
Minimum COP for air cooled condenser (for 100% Load)
kW of cooling Minimum COP required
<260 2.4
>=260 2.6
(2) The label to be affixed on each chiller shall display a maximum of five stars with an interval of one star, and the
chiller shall be rated for its performance from star one to star five based on Indian seasonal energy efficiency val ue.
(3) Every chiller shall refer to energy consumption standards which meet the performance requirements as laid down
in clause (1) (a).
(4) The chillers having water cooled or air -cooled condenser shall meet the requirement of Indian Seasonal Energy
Efficiency Ratio as per the Tables 3 and 4 as applicable. The star level chosen for the models shall be based on
minimum and maximum limits of their relative energy efficiencies of each star level band as shown in tables below.
Table 3
Star Rating levels for water cooled chiller
Table Validity Period
1st January, 2024 to 31st December, 2025
kW of cooling ISEER
1 Star 2 Star 3 Star 4 Star 5 Star
<260 4.80 5.20 5.60 6.10 6.60
>=260 &<530 5.00 5.60 6.20 6.80 7.40
>= 530 &< 1050 5.50 6.10 6.70 7.40 8.20
>= 1050 &<1580 5.80 6.50 7.20 7.90 8.70
>=1580 6.00 6.70 7.40 8.20 9.00
Table 4
Star Rating levels for air cooled chiller
Table Validity Period
1st January, 2024 to 31st December, 2025
kW of cooling ISEER
1 Star 2 Star 3 Star 4 Star 5 Star
<260 3.00 3.30 3.60 4.00 4.40
>=260 3.10 3.50 3.90 4.30 4.70
(5) The star level plan shall be reviewed before the expiry of the period specified under Table 3 and Table 4 and
thereafter, the star level plan shall be reviewed every two years or before the expiry of th e label validity period
whichever is earlier .
(6) Capacity of chiller at 39°C shall be declared by the manufacturer. This capacity shall be determined by
physical testing or through approved software.
4. Testing Guidelines –
(1) Every chiller shall be tested in accordance with the latest version of IS 16590 with all amendments.
(2) Every chiller shall accompany the manufacturer’s energy performance software test reports in the Basic Model
Group using the tool/software approved by any national or international accreditation or certification agency. The
energy performance software report shall also contain the coefficient of performance values at 25 percent, 50 percent,
75 percent and 100 percent load and Indian Seasonal Energy Efficiency Ratio value as per the test methods and test
conditions mentioned in Annex B of IS 16590. In addition to software -based test report, manufacturer is required to
also submit the physical test report for parent model under each basic model group in respect of test results of Cooli ng
capacity, Power Consumption and Indian Seasonal Energy Efficiency Ratio in accordance with the test conditions
mentioned in IS 16590 with all amendments.
(3) The performance tests shall be conducted in accordance with the standard rating conditions sta ted in Table no. 1 of
clause 6 of IS 16590 with all amendments.
(4) All the measuring instruments shall have accuracy as defined in Table no. 3 of clause 10 of IS 16590 with all
amendments. Permissible variation in measurement of each measured quantity sh all be in accordance with Table 3 of
clause 10 of IS 16950 with all amendments.
(5)Tolerance Limits:
(1) The tolerances for Coefficient of Performance (full load and part load), Cooling Capacity (full load and part load)
and Indian Seasonal Energy Efficien cy Ratio shall be as specified in Table 2 of clause 7.1 of IS 16950 with all
amendments provided the Coefficient of Performance declared by the manufacturers does not fall below the value
specified in Table 1 and 2 of this order for water cooled and air -cooled condenser respectively.
(2) Full load capacity and full load, part load Coefficient of Performance shall not be less than 100 percent of the
rating minus the allowable tolerance calculated using the equation provided in Table 2 of Clause 7.1 of IS 16950 with
all amendments.
(3) There shall be no negative tolerance on the performance matric; Indian Seasonal Energy Efficiency Ratio value
specified for each star rating level and all tested equipment shall meet the minimum threshold for each star rating
level.
(4) All the values shall be recorded to three significant figures. The Indian Seasonal Energy Efficiency Ratio and
Coefficient of Performance value shall be rounded off to two significant figures in accordance with IS 2: 1960 ‘Rules
for rounding off numerical values (with all amendments)’.
5. Test report .–The results of the chiller sample tested shall be reported on the prescribed format given in
Annexure A.
[F. No. 10/11/2022 -EC]
AJAY TEWARI , Additional Secy .
Annexure A
[See paragraph 5]
Form f or reporting the results of tests
(Separate test report format shall be used for each type/model)
Test Report No. Date of Test Report:
1. General Information
Manufacturer/Laborat ory name
Address
Date of receipt of sample by the test laboratory
Laboratory Accreditation number
Validity of the accreditation of the Test
laboratory
Tested by
Approved by
Date of testing
2. Details of samples tested and rated values
Brand name
Basic Model Group
Model 1, Model 2, Model 3
Serial number
Year of manufacture
Rated voltage
Rated Frequency
Type of condenser (water cooled/air cooled)
Rated cooling capacity
Rated COP
Rated ISEER
3. Test Results
S.
No. Schedule of Tests Declared value Measured value
1 Cooling capacity kW (at 25% load)
2 Cooling capacity kW (at 50% load)
3 Cooling capacity kW (at 75% load)
4 Cooling capacity kW (at 100% load)
5 Power consumption at 25 % load
6 Power consumption a t 50 % load
7 Power consumption at 75 % load
8 Power consumption at 100 % load
9 COP - (at 25% load)
10 COP -(at 50% load)
11 COP -(at 75% load)
12 COP -(at 100% load)
13 ISEER
NOTIFICATION
New Delhi, the 18 th September 2023
S.O. 408 9(E).—In exercise of the powers conferred by clauses (b) and (d) of section 14 of the Energy
Conservation Act, 2001 (52 of 2001), the Central Government in consultation with the Bureau of Ener gy Efficiency,
hereby specifies the Chillers of vapour compression type being used for space cooling with rated voltage up to and
including 250 V , 50 Hz AC, for single phase and up to and including 400V , 50Hz AC for three phase power supply and
direct that any such equipment or class of equipment being manufactured or sold or purchased or imported for sale
shall display particulars on labels in such manner as specified in the Bureau of Energy Efficiency (Particulars and
Manner of their Display on Labels of Chillers) Regulations, 2023.
[F. No. 10/11/2022 -EC]
AJAY TEWARI , Addl . Secy .
Uploaded by Dte. of Printing at Government of India Press, Ring R oad, Mayapuri, New Delhi -110064
and Published by the Controller of Publications, Del hi-110054.
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