I.1 Mounting of passive chilled beams
Passive beam shall be mounted under a ceiling.
Active beams are usually mounted under the ceiling or integrated into a false ceiling but they may have other mountings: on the floor, on the wall, etc.
I.2 Pressure testing and correction for water cooling capacity
One air pressure (static chamber pressure or total pressure loss of the unit) has to be provided in the documentation/software by the Applicant/Participant for the capacity to be rated.
The test shall be performed for nominal primary airflow rate. The measured pressure drop Δp shall be within ± 10% of claimed value. If Δp may be adjusted, the manufacturer is allowed to do it.
In all cases, the capacity shall be corrected, following the formula:
Pc = Pressure corrected water cooling capacity
Pm = Measured water cooling capacity
Δpn = Chamber pressure or total pressure loss given in manufacturer's documentation
Δpm = Pressure recorded during the measurement from the product's measurement connection or static pressure measured using 4 static taps connected by piezometric ring.
Formula used on the nominal airflow rate, and the same correction factor is used for 80% and 120%. In the reports, the laboratory shall give the claimed, the measured values and corrected output of the formula.
The corrected value Pc shall be compared with the claimed value.