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APPENDIX IV
AIR HANDLING PERFORMANCE
Note: Airows are for a dry coil. Refer Airow Selection below.
As lters thickness varies, the fan air ows given are for units installed without lters.
No allowance for Reheat coil option.
OPA 970RLTB2FPQ
NB Air Flow Selection
If air returning to the indoor coil is regularly expected to be above 50% relative humidity then the coil
face velocity should be limited to 2.5m/s or less (refer air ow graph above)
Consideration must be given to selecting a airow and coil face velocity that avoids water carry-over
problems, ie in high humidity (tropical/subtropical) conditions or when heavily moisture laden fresh air
is introduced
l/s - Pa
3000
4000
5000 6000 7000
0
100
200
300
AIR FLOW (l/s)
AVAILABLE EXTERNAL PRESSURE (Pa)
2.5 m/s Face Velocity
400
500
2000
NOMINAL
8V
7V
6V
10V
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