ISO 13253:2017

INTERNATIONAL ISO
STANDARD 13253
Third edition
2017-07
Ducted air-conditioners and air-to-air
heat pumps — Testing and rating for
performance
Climatiseurs et pompes à chaleur air/air raccordés — Essais et
détermination des caractéristiques de performance
Reference number
©
ISO 2017
© ISO 2017, Published in Switzerland
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Contents Page
Foreword .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols . 4
5 Airflow setting . 7
5.1 General . 7
5.2 Indoor airflow setting . 7
5.3 ESP for rating . 7
5.4 Outdoor airflow . 9
5.5 Unit supplied without indoor fan. 9
6 Cooling tests . 9
6.1 Cooling capacity tests . 9
6.1.1 General conditions . 9
6.1.2 Temperature conditions .10
6.1.3 Test conditions.11
6.2 Maximum cooling performance test.11
6.2.1 General conditions .11
6.2.2 Temperature conditions .11
6.2.3 Airflow conditions .12
6.2.4 Test conditions.12
6.2.5 Performance requirements .12
6.3 Minimum cooling performance test .13
6.3.1 General conditions .13
6.3.2 Temperature conditions .13
6.3.3 Airflow conditions .13
6.3.4 Test conditions.14
6.3.5 Performance requirements .14
6.4 Condensate control and enclosure sweat performance test .15
6.4.1 General conditions .15
6.4.2 Temperature conditions .15
6.4.3 Airflow conditions .15
6.4.4 Test conditions.15
6.4.5 Performance requirements .15
7 Heating tests.16
7.1 Heating capacity tests .16
7.1.1 General conditions .16
7.1.2 Temperature conditions .17
7.1.3 Airflow conditions .17
7.1.4 Defrost operation .18
7.1.5 Test procedure — General .18
7.1.6 Preconditioning period .19
7.1.7 Equilibrium period . . .19
7.1.8 Data collection period .19
7.1.9 Test procedure when a defrost cycle (whether automatically or manually
initiated) ends the preconditioning period .20
7.1.10 Test procedure when a defrost cycle does not end the preconditioning period .20
7.1.11 Test procedure for transient tests .20
7.1.12 Heating capacity test results . .22
7.2 Maximum heating performance test .22
7.2.1 General conditions .22
7.2.2 Temperature conditions .22
7.2.3 Airflow conditions .22
7.2.4 Test conditions.23
7.2.5 Performance requirements .23
7.3 Minimum heating performance test .23
7.3.1 General conditions .23
7.3.2 Temperature conditions .23
7.3.3 Airflow conditions .23
7.3.4 Test conditions.23
7.3.5 Performance requirements .24
7.4 Automatic defrost performance test .24
7.4.1 General conditions .24
7.4.2 Temperature conditions .24
7.4.3 Airflow conditions .24
7.4.4 Test conditions.24
7.4.5 Performance requirements .25
8 Test methods and uncertainties of measurement .25
8.1 Test methods .25
8.1.1 General.25
8.1.2 Calorimeter test method .25
8.1.3 Indoor air enthalpy method .25
8.1.4 Capacity tests .26
8.2 Uncertainty of measurement .26
8.3 Test tolerances for steady-state cooling and heating capacity tests .27
8.4 Test tolerances for performance tests .28
9 Test results .
...