ISO 5151:2017
Non-ducted air conditioners and heat pumps — Testing and rating for performance
ISO 5151:2017 specifies performance testing, the standard conditions and the test methods for determining the capacity and efficiency ratings of air-cooled air conditioners and air-to-air heat pumps.
ISO 5151:2017 is applicable to the following equipment:
- non-ducted air-cooled air conditioners and non-ducted air-to-air heat pumps; or
- ducted air conditioners and/or ducted heat pumps rated at less than 8 kW and intended to operate at an external static pressure of less than 25 Pa.
ISO 5151:2017 is limited to:
- residential, commercial and industrial single-package and split-system air conditioners and heat pumps;
- factory-made, electrically driven and use mechanical compression;
- utilizing single, multiple and variable capacity components;
- multiple split-system utilizing one or more refrigeration systems, one outdoor unit and one or more indoor units, controlled by a single thermostat/controller.
The requirements of testing and rating contained in this document are based on the use of matched assemblies.
ISO 5151:2017 is not applicable to the rating and testing of the following:
a) water-source heat pumps or water cooled air conditioners;
b) multi-split-system air conditioners and air-to-air heat pumps (follow ISO 15042 for the testing of such equipment);
c) mobile (windowless) units having a condenser exhaust duct;
d) individual assemblies not constituting a complete refrigeration system;
e) equipment using the absorption refrigeration cycle;
f) ducted equipment except for those specified in this clause (follow ISO 13253 for the testing of such equipment).
ISO 5151:2017 does not cover the determination of seasonal efficiencies, which can be required in some countries because they provide a better indication of efficiency under actual operating conditions.
NOTE Throughout this document, the terms "equipment" and "systems" mean "air conditioners" and/or "heat pumps".
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Cooling tests
5.1 Cooling capacity test
5.1.1 General conditions
5.1.2 Temperature conditions
5.1.3 Airflow conditions
5.1.4 Test conditions
5.2 Maximum cooling performance test
5.2.1 General conditions
5.2.2 Temperature conditions
5.2.3 Airflow conditions
5.2.4 Test conditions
5.2.5 Performance requirements
5.3 Minimum cooling, freeze-up air blockage and freeze-up drip performance tests
5.3.1 General conditions
5.3.2 Temperature conditions
5.3.3 Airflow conditions
5.3.4 Test conditions
5.3.5 Performance requirements
5.4 Freeze-up drip performance test
5.4.1 General conditions
5.4.2 Temperature conditions
5.4.3 Airflow conditions
5.4.4 Performance requirements
5.5 Condensate control and enclosure sweat performance test
5.5.1 General conditions
5.5.2 Temperature conditions
5.5.3 Airflow conditions
5.5.4 Test conditions
5.5.5 Performance requirements
6 Heating tests
6.1 Heating capacity tests
6.1.1 General conditions
6.1.2 Temperature conditions
6.1.3 Airflow conditions
6.1.4 Defrost operation
6.1.5 Test procedure — General
6.1.6 Preconditioning period
6.1.7 Equilibrium period
6.1.8 Data collection period
6.1.9 Test procedure when a defrost cycle (whether automatically or manually initiated) ends the preconditioning period
6.1.10 Test procedure when a defrost cycle does not end the preconditioning period
6.1.11 Test procedure for transient tests
6.1.12 Heating capacity test results
6.2 Maximum heating performance test
6.2.1 General conditions
6.2.2 Temperature conditions
6.2.3 Airflow conditions
6.2.4 Test conditions
6.3 Minimum heating performance test
6.3.1 General conditions
6.3.2 Temperature conditions
6.3.3 Airflow conditions
6.3.4 Test condition
6.3.5 Performance requirements
6.4 Automatic defrost performance test
6.4.1 General conditions
6.4.2 Temperature conditions
6.4.3 Airflow conditions
6.4.4 Test conditions
6.4.5 Performance requirements
7 Test methods and uncertainties of measurements
7.1 Test methods
7.1.1 General
7.1.2 Calorimeter test method
7.1.3 Indoor air enthalpy test method
7.1.4 Capacity tests
7.2 Uncertainties of measurement
7.3 Test tolerances for steady-state cooling and heating tests
7.4 Test tolerances for performance tests
8 Test results
8.1 Capacity results
8.1.1 General
8.1.2 Adjustments
8.1.3 Cooling capacity calculations
8.1.4 Heating capacity calculations
8.2 Data to be recorded
8.3 Test report
8.3.1 General information
8.3.2 Capacity tests
8.3.3 Performance tests
9 Marking provisions
9.1 Nameplate requirements
9.2 Nameplate information
9.3 Split systems
10 Publication of ratings
10.1 Standard ratings
10.2 Other ratings
Annex A (normative) Test requirements
Annex B (informative) Airflow measurement
Annex C (normative) Calorimeter test method
Annex D (normative) Indoor air enthalpy test method
Annex E (informative) Refrigerant enthalpy test method
Annex F (informative) Outdoor air enthalpy test method
Annex G (informative) Indoor calorimeter confirmative test method
Annex H (informative) Outdoor calorimeter confirmative test method
Annex I (informative) Balanced-type calorimeter confirmative test method
Annex J (informative) Cooling condensate measurements
Annex K (informative) Pictorial examples of the heating capacity test procedures given in 6.1
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Cooling tests
5.1 Cooling capacity test
5.1.1 General conditions
5.1.2 Temperature conditions
5.1.3 Airflow conditions
5.1.4 Test conditions
5.2 Maximum cooling performance test
5.2.1 General conditions
5.2.2 Temperature conditions
5.2.3 Airflow conditions
5.2.4 Test conditions
5.2.5 Performance requirements
5.3 Minimum cooling, freeze-up air blockage and freeze-up drip performance tests
5.3.1 General conditions
5.3.2 Temperature conditions
5.3.3 Airflow conditions
5.3.4 Test conditions
5.3.5 Performance requirements
5.4 Freeze-up drip performance test
5.4.1 General conditions
5.4.2 Temperature conditions
5.4.3 Airflow conditions
5.4.4 Performance requirements
5.5 Condensate control and enclosure sweat performance test
5.5.1 General conditions
5.5.2 Temperature conditions
5.5.3 Airflow conditions
5.5.4 Test conditions
5.5.5 Performance requirements
6 Heating tests
6.1 Heating capacity tests
6.1.1 General conditions
6.1.2 Temperature conditions
6.1.3 Airflow conditions
6.1.4 Defrost operation
6.1.5 Test procedure — General
6.1.6 Preconditioning period
6.1.7 Equilibrium period
6.1.8 Data collection period
6.1.9 Test procedure when a defrost cycle (whether automatically or manually initiated) ends the preconditioning period
6.1.10 Test procedure when a defrost cycle does not end the preconditioning period
6.1.11 Test procedure for transient tests
6.1.12 Heating capacity test results
6.2 Maximum heating performance test
6.2.1 General conditions
6.2.2 Temperature conditions
6.2.3 Airflow conditions
6.2.4 Test conditions
6.3 Minimum heating performance test
6.3.1 General conditions
6.3.2 Temperature conditions
6.3.3 Airflow conditions
6.3.4 Test condition
6.3.5 Performance requirements
6.4 Automatic defrost performance test
6.4.1 General conditions
6.4.2 Temperature conditions
6.4.3 Airflow conditions
6.4.4 Test conditions
6.4.5 Performance requirements
7 Test methods and uncertainties of measurements
7.1 Test methods
7.1.1 General
7.1.2 Calorimeter test method
7.1.3 Indoor air enthalpy test method
7.1.4 Capacity tests
7.2 Uncertainties of measurement
7.3 Test tolerances for steady-state cooling and heating tests
7.4 Test tolerances for performance tests
8 Test results
8.1 Capacity results
8.1.1 General
8.1.2 Adjustments
8.1.3 Cooling capacity calculations
8.1.4 Heating capacity calculations
8.2 Data to be recorded
8.3 Test report
8.3.1 General information
8.3.2 Capacity tests
8.3.3 Performance tests
9 Marking provisions
9.1 Nameplate requirements
9.2 Nameplate information
9.3 Split systems
10 Publication of ratings
10.1 Standard ratings
10.2 Other ratings
Annex A (normative) Test requirements
Annex B (informative) Airflow measurement
Annex C (normative) Calorimeter test method
Annex D (normative) Indoor air enthalpy test method
Annex E (informative) Refrigerant enthalpy test method
Annex F (informative) Outdoor air enthalpy test method
Annex G (informative) Indoor calorimeter confirmative test method
Annex H (informative) Outdoor calorimeter confirmative test method
Annex I (informative) Balanced-type calorimeter confirmative test method
Annex J (informative) Cooling condensate measurements
Annex K (informative) Pictorial examples of the heating capacity test procedures given in 6.1
Bibliography