NEN EN 328 : 2014

      Foreword
      Introduction
1 Scope
2 Normative references
3 Definitions
4 Symbols
5 Standard capacity
6 Manufacturer's data
7 Measurements
8 Testing methods and equipment
9 Test procedures
10 Calculating the cooling capacity
11 Conversion to standard conditions
12 Test report
Annex A (normative) Test installation for direct expansion operation
Annex B (normative) Test installation for liquids
Annex C (informative) Superheating and capacity
Annex D (normative) Test arrangement
Annex E (normative) Operation with liquid overfeed by pump circulation
Annex F (informative) Procedure to measure the oil content
Figure A.1 - Test installation for direct expansion operation
Figure B.1 - Test installation for liquids
Figure C.1 - Superheating and capacity
Figure D.1 - Minimum distances for dual discharge
Figure D.2 - Minimum distances for single discharge
Figure E.1 - Circuit diagram for pump circulation
Figure E.2 - Definition of recirculation rate
Table 1 - Standard conditions for refrigerants
Table 2 - Standard conditions for liquids
Table 3 - Uncertainty of measurements
Table E.1 - Standard conditions for operation with liquid overfeed by
            pump circulation

Defines uniform methods of performance assessment to test and ascertain the following: - product identification; - standard capacity; - standard liquid pressure drop; - standard refrigerant pressure drop (for operation with liquid overfeed by pump circulation only); - nominal air flow rate; - nominal fan power.