Figure 42. Supply fan performance with or without variable frequency drive — 30 ton air-cooled, - forward curved
8.0
7.5
1400 RPM
7.0
6.5
1300 RPM
6.0
5.5
1200 RPM
5.0
1100 RPM
4.5
4.0
1000 RPM
3.5
900 RPM
3.0
2.5
800 RPM
2.0
700 RPM
1.5
600 RPM
1.0
500 RPM
0.5
0.0
0
2000
I I m m p p o o r r t t a a n n t t : : Maximum static pressure leaving the
rooftop is 4.0" H
pressure drops from the supply fan to the
space cannot exceed 4.0" H
RT-SVX072A-EN
4000
6000
8000
Airflow, CFM
O positive. The static
2
O.
2
10000
12000
14000
N N o o t t e e s s : :
•
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.
U U n n i i t t S S t t a a r r t t u u p p
70%
80%
90%
73
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