Trane IntelliPak 1 with Symbio 800 Installation, Operation And Maintenance Manual page 80

Unit Start-up
Figure 54. Supply fan performance with or without variable frequency drive - 60, 70 and 75 tons air-cooled, - forward
curved
8.0
1200 RPM
1100 RPM
7.5
7.0
6.5
1000 RPM
6.0
5.5
900 RPM
5.0
4.5
4.0
800 RPM
3.5
700 RPM
3.0
2.5
600 RPM
2.0
500 RPM
1.5
1.0
0.5
0.0
0 3000 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
80
9000 12000 15000
Airflow, CFM
O.
2
18000 21000 24000
Notes:
• Fan performance for 60 and 70 to 75 tons
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:
60 to 75 tons - 27,000 Cfm and 50 ton - 22,500
Cfm.
• Minimum motor horsepower is 10 hp. Maximum
motor horsepower is 50 hp. Maximum fan Rpm
is 1,130 Rpm. 40 and 50 HP motor available as
standard in 460 and 575 volt only
70%
80%
90%
27000 30000
RT-SVX072D-EN