4 Unitary Products Group
036-21560-001 Rev. A (0204)
1. Airflow expressed in standard cubic feet per minute (CFM) and in cubic meters per minute (m
3
/min).
2. Motor voltage at 115 V.
FILTER PERFORMANCE
The airflow capacity data published in the “Blower Perfor-
mance” table listed above represents blower performance
WITHOUT filters. To determine the approximate blower per-
formance of the system, apply the filter drop value for the fil-
ter being used or select an appropriate value from the “Filter
Performance” table shown.
NOTE: The filter pressure drop values in the “Filter Perfor-
mance” table shown are typical values for the type of filter
listed and should only be used as a guideline. Actual pres-
sure drop ratings for each filter type vary between filter manu-
facturer.
BLOWER PERFORMANCE CFM
AIRFLOW WITH TOP RETURN
MODELS
Speed
Tap
EXTERNAL STATIC PRESSURE, INCHES W.C. (kPa)
Input/
Output/
Airflow/
cabinet
0.1 (0.025) 0.2 (0.050) 0.3 (0.075) 0.4 (0.099) 0.5 (0.124) 0.6 (0.149) 0.7 (0.174) 0.8 (0.199) 0.9 (0.224) 1.0 (0.249)
CFM
m
3
/min
CFM
m
3
/min
CFM
m
3
/min
CFM
m
3
/min
CFM
m
3
/min
CFM
m
3
/min
CFM
m
3
/min
CFM
m
3
/min
CFM
m
3
/min
CFM
m
3
/min
60/55/
1200/B
High
1687 48 1652 47 1631 46 1595 45 1557 44 1511 43 1456 41 1382 39 1313 37 1211 34
Medium High
1193 34 1183 33 1173 33 1162 33 1142 32 1115 32 1076 30 1036 29 982 28 950 27
Medium Low
933 26 933 26 921 26 911 26 902 26 872 25 825 23 793 22 771 22 712 20
Low
752 21 745 21 731 21 718 20 698 20 652 18 602 17 580 16 536 15 496 14
80/75/
1200/B
High
1686 48 1658 47 1623 46 1572 44 1534 43 1465 41 1391 39 1305 37 1202 34 1091 31
Medium High
1257 36 1223 35 1218 34 1203 34 1177 33 1142 32 1094 31 1026 29 939 27 874 25
Medium Low
977 28 982 28 976 28 955 27 934 26 899 25 843 24 791 22 738 21 686 19
Low
775 22 777 22 757 21 733 21 698 20 663 19 627 18 584 17 549 16 490 14
80/75/
1600/C
High
2071 59 2026 57 1981 56 1935 55 1864 53 1796 51 1713 48 1625 46 1532 43 1401 40
Medium High
1583 45 1590 45 1569 44 1554 44 1532 43 1502 43 1457 41 1409 40 1327 38 1221 35
Medium Low
1256 36 1275 36 1275 36 1288 36 1275 36 1265 36 1232 35 1187 34 1126 32 1023 29
Low
937 27 939 27 936 26 945 27 942 27 936 26 912 26 874 25 810 23 726 21
100/95/
1600/C
High
1996 56 1961 56 1938 55 1896 54 1836 52 1779 50 1707 48 1625 46 1531 43 1399 40
Medium High
1449 41 1480 42 1495 42 1488 42 1488 42 1449 41 1417 40 1368 39 1299 37 1208 34
Medium Low
1167 33 1192 34 1192 34 1187 34 1202 34 1192 34 1182 33 1140 32 1097 31 1018 29
Low
932 26 900 25 871 25 840 24 805 23 761 22 710 20 663 19 641 18 623 18
100/95/
2000/C
High
2404 68 2320 66 2225 63 2138 61 2034 58 1924 54 1816 51 1692 48 1559 44 1422 40
Medium High
2018 57 1955 55 1883 53 1815 51 1750 50 1670 47 1586 45 1497 42 1394 39 1246 35
Medium Low
1626 46 1581 45 1531 43 1488 42 1418 40 1363 39 1291 37 1225 35 1123 32 964 27
Low
1336 38 1291 37 1249 35 1205 34 1155 33 1091 31 1018 29 951 27 884 25 759 21
120/112/
2000/D
High
2520 71 2432 69 2353 67 2251 64 2152 61 2042 58 1947 55 1815 51 1701 48 1525 43
Medium High 2018 57 1979 56 1945 55 1911 54 1863 53 1779 50 1705 48 1599 45 1493 42 1353 38
Medium Low
1586 45 1545 44 1501 42 1457 41 1407 40 1351 38 1287 36 1216 34 1081 31 926 26
Low 1321 37 1266 36 1213 34 1163 33 1111 31 1071 30 987 28 864 24 763 22 700 20
FILTER PERFORMANCE - PRESSURE DROP INCHES W.C. AND (KPA)
AIRFLOW RANGE
MINIMUM
OPENING SIZE
FILTER TYPE
DISPOSABLE
COARSE FIBER
WASHABLE
*
*
PLEATED
CFM
m
3
/m in
2
cm
2
In W.C. kPA In W.C. kPA In W.C.. kPA
0 - 750 0 - 21.4 230 584.2 0.01 0.00249 0.01 0.00249 0.15 0.03736
751 - 1000 21.25 - 28.32 330 838.2 0.05 0.01245 0.05 0.01245 0.20 0.04982
1001 - 1250 28.33 - 35.40 330 838.2 0.10 0.02491 0.10 0.02491 0.20 0.04982
1251 - 1500 35.41 - 42.48 330 838.2 0.10 0.02491 0.10 0.02491 0.25 0.06227
1501 - 1750 42.49 - 49.55 380 965.2 0.15 0.03736 0.14 0.03487 0.30 0.07473
1751 - 2000 49.56 - 56.63 380 965.2 0.19 0.04733 0.18 0.04484 0.30 0.07473
2001 & Above 56.64 - Above 463 1176.0 0.19 0.04733 0.18 0.04484 0.30 0.07473
*. Coarse Fiber Filters are the type supplied with furnace (if supplied).
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