Trane IntelliPak Installation, Operation And Maintenance Manual page 109

Figure 66. Supply fan performance with or without variable frequency drive - 40, 50 and 55 ton air-cooled, 48 and 59 ton
evaporative condensing - forward curved
8.0
1200 RPM
7.5
7.0
1100 RPM
6.5
6.0
1000 RPM
5.5
5.0
4.5 900 RPM
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
\
Figure 67. Supply fan performance with variable frequency drive - 40 ton air-cooled, 48 ton evaporative condensing -
direct drive plenum, 80% width
8.0
7.5
1800 RPM
7.0
6.5
1700 RPM
6.0
1600 RPM
5.5
5.0 1500 RPM
4.5
1400 RPM
4.0
1300 RPM
3.5
1200 RPM
3.0
1100 RPM
2.5
1000 RPM
2.0
1.5
1.0
0.5
0.0
0 2000 4000
RT-SVX36K-EN
8000 10000 12000 14000 16000
Airflow, CFM
2000 RPM
1900 RPM
6000 8000 10000
Airflow, CFM
18000 20000 22000 24000
12000 14000 16000 18000
Unit Start Up
S_HL* 40 & 50, 55, 48 & 59 Ton
Dual 20 X 20 Fans
Entrance Losses
- without Evap Coil
- without Filters
- without Return Air Dampers
- without Exhaust
Fan Curve Limits
- Minimum Motor HP = 7.5
- Maximum Motor HP = 30
- Maximum Fan RPM
7.5 - 15 HP = 1141
20 - 30 HP = 1170
- Maximum CFM
40/48 = 18,000
50/59, 55 = 22,500
- Maximum Static Pressure
Leaving the Unit = 4.0" w.c.
70%
80%
90%
26000
S_HL*40/48 Ton
Single 27" 80% Width
DDP Fan
Entrance Losses
- without Evap Coil
- without Filters
- without Return Air Dampers
- without Exhaust Fan
Fan Curve Limits
- Minimum Motor HP = 3
- Maximum Motor HP = 25
- Maximum Fan RPM = 2000
- Maximum CFM = 18,000
- Maximum Static Pressure
Leaving the unit = 4.0" w.c.
20000
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