Specification Sheet

11
External Static Pressure—Inches W.C. [kPa]
PSC CFM [L/s] Air Delivery/RPM/Watts—115/208/480V Volts
RPM 822
Blower Size/
Motor
HP [W]
# of Speed
-6024
with 30 kW
Heater
858
Motor
Speed
from
Factory
885
Manufacturer
Recommended
Air-Flow Range
(Min/Max) CFM
Motor
Speed
931 958 — —
Watts 540 519 506 484 459 — —
10x10
1/2 HP [373]
2 Speed
High
CFM — — — — 1514 [714] 1411 [666] 1315 [621]
RPM
0.1 [.02] 0.2 [.05] 0.3 [.07] 0.4 [.10] 0.5 [.12] 0.6 [.15] 0.7 [.17]
— — — — 1061 1069
RPM 883 922 959 1001 1015 — —
1078
Model
No.
RHSL
-4221
No Heater
-4221
with 20 kW
Heater
-4821/-4824
No Heater
-3617/3621
with 18 kW
Heater
Watts 442 407 386 376 365 — —
10x8
1/3 HP [249]
2 Speed
-4821/-4824
with 25 kW
Heater
RPM
High
1241/1537 CFM
[580/725 L/s]
High
CFM — — — — 1094 [516] 1034 [488] 978 [462]
Low
CFM 1493 [705] 1449 [684] 1363 [643] 1287 [607]
RPM — — — — 1049 1067 1085
1211 [571] — —
Watts — — — — 710 702 677
RPM 870 882
-6024
No Heater
925 957 992
828
— —
860 878 890
Watts 514 508 490 461 431 — —
10x10
1/2 HP [373]
2 Speed
High
CFM
1001 —
— — — — 1414 [667] 1311 [619] 1215 [573]
RPM — — — — 1067 1080 1094
—
Watts 735 718 705 695 678
High
1225/1500 CFM
[538/667 L/s]
Low
CFM 1423 [672] 1379 [651] 1293 [610] 1217 [574] 1141 [538] — —
Watts — — — — 700 678 665
RPM 863 905 935 966 992 — —
Watts 765 737 687 647 621 — —
10x10
3/4 HP [559]
2 Speed
High
CFM — — — — 1787 [843] 1679 [792] 1575 [743]
RPM — — — — 1089 1098 1110
— —
11x11
3/4 HP [559]
2 Speed
High
CFM — —
High
1512/1824 CFM
[742/801 L/s]
Low
CFM 1711 [807] 1689 [797] 1637 [773] 1598 [754] 1542 [728] — —
Watts
— — — — 695 665 630
RPM 930 950 985 1015 1041 — —
Watts 700 660 630 600 580 — —
10x10
3/4 HP [559]
2 Speed
High
CFM — — — — 1687 [796] 1579 [745] 1475 [696]
RPM — — —
—
—
High
1095
1054/1148 CFM
[497/542 L/s]
Low
CFM 1151 [543] 1120 [529] 1091 [515] 1054 [497] 1012 [478] — —
1107 1120
— 1867 [881] 1816 [857] 1763 [832]
Watts — — — — 445 424 387
RPM — —
High
1225/1500 CFM
[695/796 L/s]
Low
CFM 1641 [774] 1619 [764] 1567 [739] 1528 [721] 1472 [695] — —
Watts
— — — — 670 635 615
RPM 764 803 824 856 886 — —
Watts 778 756 733 715 701 — —
11x11
3/4 HP [559]
2 Speed
High
CFM — — — — 1967 [928] 1916 [904] 1863 [879]
RPM — — — — 948 959 991
— — 989 1005 1020
High
1225/1500 CFM
[695/796 L/s]
High
1766/1965 CFM
[833/927 L/s]
Low
CFM 1866 [881] 1833 [865] 1806 [852] 1772 [836] 1710 [807] — —
Watts
— — — — 850 827 816
Low
CFM 1796 [848] 1763 [832] 1736 [819] 1702 [803] 1640 [774] — —
Watts — — — — 818 795 780
115V/208V/480V Airflow Performance Data—RHSL (PSC Motor)
Notes: • All 208/240V PSC motors have voltage taps for 208 and 240 volts.
• All 208/240V PSC motors are shipped on high speed and 240 volts.
• All 115V PSC motors are shipped on high speed.
• If the application external static is less than 0.5" WC, adjust the motor speed to
the low static speed as described below:
• Unplug the black motor wire off the relay on the control board and
plug in the red motor wire.
• Replace the cap on the black motor wire.
• Voltage change (208/240V motors):
• Move the orange lead to transformer 208V tap from 240V tap.
Replace the wire cap on 240V tap.
• Unplug the purple motor wire off the transformer and plug in the
yellow motor wire.
• Replace the cap on the purple motor wire.
• All 480V PSC motors are shipped on high speed.
• If the application external static is less than 0.5" WC, adjust the motor speed to
the low static speed as described below for 3-ton through 4-ton air handlers.
• Unplug the black motor wire off the relay and remove the cap from
the red motor wire.
• Plug the red motor wire to the relay and connect the black motor
wire with the yellow motor wire.
• For 5-ton air handler, unplug the black motor wire off the relay and plug in the red
motor wire, then cap the black motor wire. There is no yellow motor wire on 5-ton
air handler.
WARNING: Do not connect red motor wire with yellow motor wire in any circumstance on
480V PSC motors. Connecting red motor wire with yellow motor wire will result in
permanent motor damage.
• The above airflow table lists the airflow information for air handlers without heater and air
handler with maximum heater allowed for each model.
• The following formula can be used to calculate the approximate airflow, if a smaller (N kW)
than the maximum heater kit is installed. Approximate Airflow = Airflow without heater -
(Airflow without heater - Airflow with maximum heater) x (N kW/maximum heater kW)
[ ] Designates Metric Conversions
Air
Airflow Performance Data
RHSL Series