TemperZone EcoULTRA OPA 1400RKTMF, Installation & Maintenance, Page: 13 / 16

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APPENDIX IV
AIR HANDLING PERFORMANCE
Note: Airflows are for a dry coil. Reduce airflow by 10% in high moisture removal conditions..
As filters thickness varies, the fan air flows given are for units installed without filters.
OPA 1400RKTMF-P
l/s - Pa
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 flow graph above)
Consideration must be given to selecting a airflow and coil face velocity that avoids water carry - over
problems i.e. in high humidity (tropical/subtropical) conditions or when heavily moisture laden fresh air is
introduced
OPA 2100RKTMF-P
l/s - Pa
5000
6000
7000 8000 9000
0
100
200
300
AIR FLOW (l/s)
AV
AILABLE EXTERNA
L PRESSURE (
Pa)
2.5 m/s Face Velocity
400
500
4000
NOMINAL
6V
7V
8V
10V
5V
8.0
4.8
11 11
3.2
9.2
6.4
3.6
7000 8000 10000 11000
0
100
200
300
AIR FLOW (l/s)
AV
AILABLE EXTERNA
L PRESSURE (
Pa) 400
500
6000
NOMINAL
9000
2.5 m/s FACE VELOCITY
7V
9V
5V
8V
6V
7.6
4.0
4.0
16
8.8