Trane IntelliPak 1 with Symbio 800 Installation, Operation And Maintenance Manual page 74

Unit Start-up
Figure 48. Supply fan performance with or without variable frequency drive - 40, 50 and 55 tons air-cooled, - forward
curved
8.0
1200 RPM
7.5
7.0
1100 RPM
6.5
6.0
1000 RPM
5.5
5.0
900 RPM
4.5
4.0
800 RPM
3.5
3.0
700 RPM
2.5
2.0 600 RPM
1.5
500 RPM
1.0
0.5
0.0
0 2000 4000 6000
Important: Maximum static pressure leaving the rooftop is
4.0" H O positive. The static pressure drops
2
from the supply fan to the space cannot
exceed 4.0" H
74
8000 10000 12000 14000
Airflow, CFM
O.
2
16000 18000 20000 22000
Notes:
• Fan performance for 40 and 50 to 55 ton
rooftops is identical. Contact your local Trane®
representative for information on oversized
motors.
• Shaded areas represent selectable area.
Contact your local Trane® representative for
more information.
• Supply fan performance curve includes internal
resistance of rooftop. For total static pressure
determination, system external static must be
added to appropriate component static
pressure drops (evaporator coil, filters, optional
economizer, optional relief fan, optional heating
system, optional cooling only extended casing,
optional roof curb).
• Maximum Cfm (for cULus approval) as follows:
40 ton - 18,000 Cfm and 50 ton - 22,500 Cfm.
• Minimum motor horsepower is 7.5 hp.
Maximum motor horsepower is 30 hp.
Maximum ½ hp to 15 hp fan Rpm is 1,141 Rpm,
maximum 20 hp to 30 hp fan Rpm is 1,170 Rpm.
70%
80%
90%
24000 26000
RT-SVX072D-EN