Lennox CB19-21, Manual

Page: 5 / 12

BLOWER DATA
CB19-21 AND CBH19-21 BLOWER PERFORMANCE
External Static Air Volume at Various Blower Speeds
Pressure
High Medium Low
in. wg. Pa cfm L/s cfm L/s cfm L/s
0 0 855 405 630 295 530 250
.05 12 830 390 625 295 525 250
.10 25 800 380 620 295 520 245
.15 37 765 360 610 290 515 245
.20 50 730 345 595 280 505 240
.25 62 685 325 570 270 490 230
.30 75 640 300 535 250 465 220
.40 100 525 250 425 200 365 170
NOTE — All air data is measured external to unit.
Electric heaters have no appreciable air resistance.
For optional up-flow air filter resistance see separate table.
CB19-31 AND CBH19-31 BLOWER PERFORMANCE
External Static Air Volume at Various Blower Speeds
Pressure
High Medium Low
in. wg. Pa cfm L/s cfm L/s cfm L/s
0 0 1400 660 1270 600 1050 495
.05 12 1370 645 1250 590 1050 495
.10 25 1335 630 1220 575 1050 495
.15 37 1290 610 1190 560 1040 490
.20 50 1240 585 1150 545 1025 485
.25 62 1190 560 1110 525 1000 470
.30 75 1130 535 1060 500 970 460
.40 100 1000 470 945 445 885 420
.50 125 855 405 815 385 765 360
NOTE — All air data is measured external to unit.
Electric heaters have no appreciable air resistance.
For optional up-flow air filter resistance see separate table.
CB19-51 AND CBH19-51 BLOWER PERFORMANCE
WITH 208/230 VOLT MOTOR
External Static Air Volume at Various Blower Speeds
Pressure
High Medium Low
in. wg. Pa cfm L/s cfm L/s cfm L/s
0 0 1950 920 1640 775 1380 650
.05 12 1910 900 1620 765 1370 645
.10 25 1870 880 1600 755 1350 635
.15 37 1830 865 1580 745 1330 630
.20 50 1780 840 1550 730 1310 620
.25 62 1730 815 1520 715 1290 610
.30 75 1680 795 1490 705 1260 595
.40 100 1570 740 1400 660 1200 565
.50 125 1410 665 1280 605 1100 520
NOTE — All air data is measured external to unit.
Electric heaters have no appreciable air resistance.
For optional up-flow air filter resistance see separate table.
CB19-65 AND CBH19-65 BLOWER PERFORMANCE
WITH 208/230 VOLT MOTOR
External Static Air Volume at Various Blower Speeds
Pressure
High Medium Low
in. wg. Pa cfm L/s cfm L/s cfm L/s
0 0 2415 1140 2205 1040 1830 865
.05 12 2360 1115 2165 1020 1815 855
.10 25 2305 1090 2125 1005 1800 850
.15 37 2245 1060 2085 985 1780 840
.20 50 2185 1030 2040 965 1760 830
.25 62 2130 1005 2000 945 1735 820
.30 75 2070 975 1950 920 1705 805
.40 100 1940 915 1845 870 1630 770
.50 125 1810 855 1725 815 1540 725
.60 150 1665 785 1585 750 1405 665
NOTE — All air data is measured external to unit.
Electric heaters have no appreciable air resistance.
For optional up-flow air filter resistance see separate table.
CB19-26 AND CBH19-26 BLOWER PERFORMANCE
External Static Air Volume at Various Blower Speeds
Pressure
High Medium Low
in. wg. Pa cfm L/s cfm L/s cfm L/s
0 0 1150 545 1020 480 870 410
.05 12 1105 520 985 465 860 405
.10 25 1065 505 955 450 850 400
.15 37 1020 480 920 435 825 390
.20 50 960 455 875 415 795 375
.25 62 905 425 830 390 755 355
.30 75 845 400 780 370 710 335
.40 100 680 320 625 295 550 260
NOTE — All air data is measured external to unit.
Electric heaters have no appreciable air resistance.
For optional up-flow air filter resistance see separate table.
CB19-41 AND CBH19-41 BLOWER PERFORMANCE
External Static
Air Volume at Various Blower Speeds
Pressure
High Medium Low
in. wg. Pa cfm L/s cfm L/s cfm L/s
0 0 1630 770 1380 650 1130 535
.05 12 1590 750 1370 645 1150 545
.10 25 1550 730 1350 635 1160 545
.15 37 1500 710 1330 630 1160 545
.20 50 1460 685 1310 620 1160 545
.25 62 1400 660 1270 600 1150 545
.30 75 1340 630 1230 580 1130 535
.40 100 1200 565 1130 535 1050 495
.50 125 1010 475 960 455 890 420
NOTE — All air data is measured external to unit.
Electric heaters have no appreciable air resistance.
For optional up-flow air filter resistance see separate table.
CB19-51 AND CBH19-51 BLOWER PERFORMANCE
WITH 460 VOLT (1 phase) MOTOR
External Static Air Volume at Various Blower Speeds
Pressure
High Low
in. wg. Pa cfm L/s cfm L/s
0 0 2020 955 1630 770
.05 12 1950 920 1610 760
.10 25 1920 905 1600 755
.15 37 1870 880 1570 740
.20 50 1820 860 1540 725
.25 62 1770 835 1500 710
.30 75 1710 805 1460 690
.40 100 1590 750 1350 635
.50 125 1430 675 1250 590
NOTE — All air data is measured external to unit.
Electric heaters have no appreciable air resistance.
For optional up-flow air filter resistance see separate table.
CB19-65 AND CBH19-65 BLOWER PERFORMANCE
WITH 460 VOLT (1 phase) MOTOR
External Static
Air Volume at Various Blower Speeds
Pressure
High Low
in. wg. Pa cfm L/s cfm L/s
0 0 2380 1125 2250 1060
.05 12 2340 1105 2180 1030
.10 25 2290 1080 2140 1010
.15 37 2250 1060 2110 995
.20 50 2190 1035 2065 975
.25 62 2130 1005 2015 950
.30 75 2075 980 1970 930
.40 100 1945 920 1860 880
.50 125 1820 860 1760 830
NOTE — All air data is measured external to unit.
Electric heaters have no appreciable air resistance.
For optional up-flow air filter resistance see separate table.
— 5 —