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47RT-PRC010-EN
Performance
Data
Note:
1. Important: Maximum static pressure leaving the rooftop is 4.0” H2O positive. The static pressure drops from the supply fan to the space cannot exceed 4.0” H2O.
Figure PD-2 — Supply Fan Performance WITH INLET VANES — 20 and 25 Tons
(20, 25 Tons)
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
CFM
STATIC PRESSURE, Inches w.c
.
50%
60%
70%
40%wocfm
90%
20 HP
1500 RPM
15 HP
1400 RPM
1300 RPM
7.5 HP
10 HP
1200 RPM
5 HP
1100 RPM
1000 RPM
3 HP
900 RPM
800 RPM
700 RPM
600 RPM
500 RPM
1600 RPM
1700 RPM
S_HFC20 & 25 Ton
Entrance Losses
- w ith Inlet Guide Vanes
- w ithout Evap Coil
- w ithout Filterts
- w ithout Return Air damper
s
- w ithout Exhaust Fan
Fan Curve Limits
- Minimum Motor HP = 3
- Maximum Motor HP
C20 = 10 HP
C25 = 15 HP
- Maximum RPM
3 HP - 5 HP = 1100
7.5 HP - 15 HP = 1655
- Maximum CFM
C20 = 9,000
C25 = 11,000
- Maximum Static Pressure
Leaving the Unit = 4.0" w .
c
80%