Trane IntelliPak 1, Installation, Operation And Maintenance Manual, Page: 76 / 164

76 RT-SVX072A-EN
Figure 45. Supply fan performance with or without variable frequency drive - 40, 50 and 55 tons air-cooled, - forward
curved
90%
900 RPM
800 RPM
700 RPM
600 RPM
500 RPM
70%
80%
1000 RPM
1100 RPM
1200 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 16000 18000 20000 22000 24000 26000
S
ta
!
c
Pr
e
ss
u
re
,
In
c
h
e
s
w
.c
.
Airflow, CFM
IIm mp po orrtta an ntt:: 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.
N No otte ess::
• 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.
U Un niitt S Stta arrttu up p