RT-SVX072A-EN
73
Figure 42. Supply fan performance with or without variable frequency drive — 30 ton air-cooled, - forward curved
90%
900 RPM
800 RPM
700 RPM
600 RPM
500 RPM
70%
80%
1000 RPM
1100 RPM
1200 RPM
1300 RPM
1400 RPM
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
0 2000 4000 6000 8000 10000 12000 14000
Sta!c Pressure, Inches w.c.
Airflow, CFM
IImmppoorrttaanntt:: Maximum static pressure leaving the
rooftop is 4.0" H
2
O positive. The static
pressure drops from the supply fan to the
space cannot exceed 4.0" H
2
O.
NNootteess::
• 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: 30 ton - 13,500 Cfm.
• Minimum motor horsepower is 5 hp.
Maximum motor horsepower is 20 hp.
Maximum fan RPM is 1450.
UUnniitt SSttaarrttuupp