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Scope of the programme

This Certification Programme applies to factory-made units intended for Close Control Air Conditioning. This programme includes units with cooling capacities up to 100 kW under the specified test conditions. Participating companies must certify all production models within the scope of the programme.

2.1 Direct expansion close control air conditioner
Unit containing complete refrigeration system, designed to satisfy the requirements of the process carried out in the conditioned enclosure.

2.2 Chilled water close control air conditioner
Factory built assembly designed to satisfy requirements of the process carried out in the conditioned enclosure; it is connected to a chilled fluid generator which contains a refrigeration circuit.

2.3 Total cooling capacity
Heat removed by the air conditioner from air within a defined interval of time.

2.4 Sensible cooling capacity
Capacity of the unit for removing sensible heat from the evaporator intake air.

2.5 A-weighted sound power
A single figure on a specific scale which can be related to the subjective assessment of the loudness of a noise.

2.6 Effective power input
Average electrical power input to the unit obtained from:
- the power input for operation of the compressor and any power input for defrosting excluding additional electrical heating devices not used for defrosting
- the power input of all control and safety devices of the unit
- the proportional power input of the conveying devices (e.g., fans, pumps) for ensuring the transport of the heat transfer media inside the air conditioner
Testing requirements

Standard ratings shall be established at the Standard Rating Conditions specified in the Section "Rating requirements". All standard ratings shall be verified by tests conducted in accordance with the following standards:

3.1 Performance testing using the calorimeter room method:
ISO 5151
"Non-ducted Air Conditioners and Heat Pumps, testing and rating".

3.2 Performance testing using the air enthalpy method:
"Autonomous Air Conditioning Units"

3.3 Acoustic testing:
"Acoustical Measurements of Air-Cooled Packaged Room Air Conditioners in Reverberation Rooms".

3.4 Acoustic testing of large equipment :
"Acoustic Measurements on Machines and Equipment in the Free Fields or Large Rooms on a hard Reflecting Plane".

Specifications concerning temperature conditions and installation of units for acoustical testing are defined in the Document 6/C/006-2006.

Rating requirements

4.1 Performance testing
Standard rating conditions in Table 1 are used. The ambient temperature surrounding units or parts with duct connection on the air inlet and outlet sides is set between 15°C and 30°C.

Table 1: Standard rating conditions used for performance testing

Operating Conditions for Standard Rating
  Indoor unit Outdoor unit
Air entering
Chilled water
Air entering Water
Dry bulb (°C)
Wet bulb (°C) In (°C)
Out (°C)
Dry bulb (°C)
Wet bulb * (°C)
In (°C) Out ** (°C)
Direct expansion
Close Control
Air Conditioner
24 17-
30 35
Chilled Water
Close Control
Air Conditioner
2417 7
--- -

* This temperature applies to equipment where the wet bulb temperature affects the heat exchange in the outdoor side (unit using water latent heat as all or portion of the heat source or sink for the outdoor heat exchanger).

** If the manufacturers' water flow rate is the constant, ithe water out temperature is allowable to differ from the figure shown.


Certified characteristics

The following characteristics of close control air conditioner are verified by tests:
a) Total cooling capacity
b) Sensible cooling capacity
c) Energy efficiency ratio
d) A-weighted sound power indoor side (non ducted units)
e) A-weighted sound power outdoor side (non ducted direct expansion units)
f) A-weighted sound power radiated from the duct (ducted units)
g) Water pressure drop (chilled water units)

Symbols used in the directory

Pc Total cooling capacity kW
Ps Sensible cooling capacity
Pe Effective power input
Dp Water pressure drop
Lw A-weighted sound power level
Lw env
A-weighted sound power level around the unit
Lw in duct
A-weighted sound power level in the duct
MPS Main Power Supply 
EER Energy Efficiency Ratio
Classification of equipment

ProgrammeCode Heat rejection Code System Code Operation Code Mounting* Code
Close Control
Air Conditioners
CCAir cooled
ASplit SCooling only
C Upflow U
Water cooled
Chilled water

* Other applications according to specific informations

General Reference documents

Certification Manual 14th (December 2017)
Reference documents