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INDOOR AIRFLOW PERFORMANCE—208 VOLTS
External Static Pressure—Inches W.C. [kPa]
CFM [L/s] Air Delivery/RPM/Watts—208 Volts
Side Discharge—Wet Coil
Nominal
Cooling
Capacity
Tons [kW]
Motor Speed
from
Factory
Motor
Speed
RPM 730 775 820 865 905 940
0.1 [.02] 0.2 [.05] 0.3 [.07] 0.4 [.10] 0.5 [.12] 0.6 [.15] 0.7 [.17]
975
RPM 695 785 870 905 940 980 1020
Watts 221 214 203 191 171 193 149
High
CFM 898 [424] 861 [406] 822 [388] 777 [367] 721 [340] 651 [307] 562 [265]
2.5
[8.79]
Low Low
CFM 1076 [508]
RPM 940 965 995 1020 1045 1070 1090
1059 [500] 1032 [487] 996 [470] 950 [448] 896 [423] 832 [393]
Med.
CFM 1222 [577] 1197 [565] 1179 [556] 1162 [548] 1137 [537] 1097 [518] 1033 [488]
RPM 765 810 855 890 920 960 995
Watts
423 415 407 397 386 370 351
RPM 896 956 1008 1062 1093 1145 1194
Watts 317 358 393 435 457 493 531
High
CFM 1850 [873] 1850 [873] 1850 [873] 1850 [873] 1850 [873] 1850 [873] 1850 [873]
RPM 1091 1141 1185 1233 1267 1308 1336
5.0
[17.59]
High
Low
CFM 1500 [707] 1500 [707] 1500 [707] 1500 [707] 1500 [707] 1500 [707] 1500 [707]
Watts 579 630 673 724 759 800 826
2.0
[7.03]
High Low
CFM 675 [319] 657 [310] 634 [299] 602 [284] 560 [264] 505 [238] 435 [205]
Watts 292 278 266 253 239 221 199
Blower Size/
Motor
HP [W] &
# of Speeds
10x9
1 HP ECM
(Constant CFM)
9x7
1/4 HP
2 Speed Motor
Watts
356 349 341 331 320 305 287
3.0
[10.55]
Med. Low
Low
Low
Low
Cool Heat
HighHigh
Low
RPM 895 930 965 985 1005 1025 1045
Watts 538 514 493 473 454 434 412
Low
CFM 1204 [568] 1202 [567] 1191 [562] 1171 [553] 1143 [539] 1107 [522] 1065 [503]
RPM 734 810 886 923 959 988 1016
3.5
[12.31]
High High
CFM 1514 [715] 1461 [670] 1415 [668] 1370 [647] 1322 [624] 1266 [597] 1197 [565]
Watts 476 468 450 427 403 380 363
10x9
3/4 HP
3 Speed Motor
Low
High
See
Note
Below
4.0
[14.07]
High
CFM
ᮅ 1843 [870] ᮅ 1763 [832]
1693 [799] 1627 [768] 1560 [736] 1485 [701] 1398 [660]
RPM 1085 1094 1102 1110 1118 1126 1134
Watts 699 663 632 604 576 548 517
Med.
CFM 1674 [790] 1620 [765] 1566 [739] 1511 [713] 1451 [685] 1384 [653] 1305 [616]
RPM 997 1019 1040 1058 1076 1088 1100
Watts 625 596 567 539 512 484 455
10x9
1/2 HP
3 Speed Motor
NOTE: On 4 ton models, switch to medium speed for cooling if external static pressure is less than 0.4" W.C. at 230 volts or less than 0.3" W.C. at 208 volts.
ᮅ WARNING: Do not operate unit in area of airflow table shown in bold (CFM greater than 1700 for 4 ton models) due to possibility of water blow-off.
ᮅ WARNING: Observe airflow operating limits if operating in area of airflow table shown in bold.
14
AIRFLOW PERFORMANCE—RSNA-B SERIES
Pressure Drop—Includes W.C. [kPa]
DOWN DISCHARGE PRESSURE DROP (ADD TO EXTERNAL STATIC PRESSURE)
.00
MINIMUM RECOMMENDED FILTER SIZES
.02 [.005] .05 [.012] .07 [.017] .1 [.025] .12 [.030] .15 [.037] .17 [.042]
Nominal Cooling Capacity Tons [kW] 2.0 [7.03]
Minimum Filter Size—Inches [mm]
CFM [L/s] 600 [283] 800 [378] 1000 [472] 1200 [556] 1440 [661] 1600 [755] 1800 [850] 2000 [944]
5.0 [17.59]
2.5 [8.79] – 4.0 [14.07]
20 x 20 x 1 [508 x 508 x 25] 24 x 24 x 1 [610 x 610 x 25] 24 x 30 x 1 [610 x 762 x 1]