Blower / Acc. Air Resistance Data - Lennox LGA Series Unit Information

BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY WITH DRY INDOOR COIL & AIR FILTERS IN PLACE.
FOR ALL UNITS ADD:
1 − Wet indoor coil air resistance of selected unit.
2 − Any factory installed options air resistance (heat section, economizer, etc.)
3 − Any field installed accessories air resistance ( duct resistance, diffuser, etc.)
Then determine from blower table blower motor output and drive required.
See page 28 for wet coil and option/accessory air resistance data.
See page 28 for factory installed drive kit specifications.
Air
Volume .20 (50) .40 (100) .60 (150)
cfm
RPM BHP RPM BHP RPM BHP
(L/s)
(kW) (kW)
6000 435 1.20 525 1.45
- - -
(0.90)
(2830)
6500
445 1.30 530 1.60
- - -
(0.97)
(3065)
7000
455 1.40 535 1.75
- - -
(1.04)
(3305)
7500
380 1.05 465 1.50 540 1.90
(0.78) (1.12)
(3540)
8000
390 1.25 475 1.65 545 2.10
(3775) (0.93) (1.23)
8500
405 1.40 485 1.90 555 2.35
(4010) (1.04) (1.42)
9000
415 1.60 495 2.10 565 2.60
(4245) (1.19) (1.57)
9500
430 1.85 505 2.35 575 2.90
(4485) (1.38) (1.75)
10,000
445 2.10 520 2.65 585 3.20
(4720) (1.57) (1.98)
10,500
455 2.35 530 2.95 595 3.50
4955) (1.75) (2.20)
11,000
470 2.60 545 3.25 605 3.85
(5190) (1.94) (2.42)
11,500
485 2.95 555 3.60 620 4.25
(5425) (2.20) (2.69)
12,000 500 3.30 570 4.00 630 4.65
(2.46) (2.98)
(5665)
12,500 515 3.65 580 4.35 640 5.05
(2.72) (3.25)
(5900)
13,000 530 4.05 595 4.80 655 5.55
(3.02) (3.58)
(6135)
13,500 545 4.45 610 5.25 665 6.00
(3.32) (3.92)
(6370)
14,000
560 4.90 620 5.70 680 6.55
(3.66) (4.25)
(6605)
14,500
575 5.40 635 6.25 690 7.05
(4.03) (4.66)
(6845)
15,000
590 5.90 650 6.80 705 7.65
(4.40) (5.07)
(7080)
BLOWER DATA−BASE UNIT
TOTAL STATIC PRESSURE
.80 (200) 1.00 (250) 1.20 (300) 1.40 (350) 1.60 (400) 1.80 (450) 2.00 (495) 2.20 (545) 2.40 (595) 2.60 (645)
RPM BHP RPM BHP RPM BHP
(kW) (kW) (kW)
570 1.60 630 2.00 700 2.35
(1.08) (1.19) (1.49) (1.75)
580 1.80 640 2.20 705 2.60
(1.19) (1.34) (1.64) (1.94)
590 2.05 650 2.45 710 2.85
(1.31) (1.53) (1.83) (2.13)
600 2.30 660 2.70 715 3.15
(1.42) (1.72) (2.01) (2.35)
610 2.55 665 2.95 720 3.45
(1.57) (1.90) (2.20) (2.57)
620 2.80 675 3.30 725 3.75
(1.75) (2.09) (2.46) (2.80)
625 3.10 685 3.60 735 4.10
(1.94) (2.31) (2.69) (3.06)
635 3.40 690 3.90 745 4.50
(2.16) (2.54) (2.91) (3.36)
645 3.75 700 4.30 750 4.85
(2.39) (2.80) (3.21) (6.49)
655 4.10 710 4.70 760 5.25
(2.61) (3.06) (3.03) (3.92)
665 4.45 720 5.10 765 5.66
(2.87) (3.32) (3.80) (4.22)
675 4.85 730 5.55 775 6.10
(3.17) (3.62) (4.14) (4.55)
685 5.30 740 6.00 785 6.60
(3.47) (3.95) (4.480 (4.92)
695 5.75 750 6.50 795 7.10
(3.77) (4.29) (4.85) (5.30)
710 6.25 760 7.00 805 7.65
(4.14) (4.66) (5.22) (5.71)
720 6.75 770 7.50 815 8.25
(4.48) (5.04) (5.60) (6.15)
730 7.30 780 8.10 825 8.85
(4.89) (5.45) (6.04) (6.60)
745 7.90 790 8.65 835 9.45
(5.26) (5.89) (6.45) (7.05)
755 8.50 800 9.30 845 10.10
(5.71) (6.340 (6.94) (7.53)
BOLD INDICATES FIELD FURNISHED DRIVE
Inches Water Gauge (Pa)
RPM BHP RPM BHP RPM BHP
(kW) (kW) (kW)
750 2.80 795 3.15 840 3.40
(2.09) (2.35) (2.54)
755 3.05 800 3.40 845 3.70
(2.28) (2.54) (2.76)
760 3.30 805 3.70 850 4.05
(2.46) (2.76) (3.02)
765 3.60 810 4.00 855 4.45
(2.69) (2.98) (3.32)
770 3.90 815 4.35 860 4.85
(2.91) (3.25) (3.62)
775 4.20 820 4.70 865 5.20
(3.13) (3.51) (3.88)
785 4.60 830 5.10 870 5.60
(3.43) (3.80) (4.18)
790 4.95 835 5.50 880 6.05
(3.69) (4.10) (4.51)
800 5.40 845 5.95 885 6.50
(4.03) (4.44) (4.85)
805 5.80 850 6.40 895 7.00
(4.33) (4.77) (5.22)
815 6.30 860 6.90 900 7.50
(4.70) (5.15) (5.60)
820 6.70 865 7.40 910 8.05
(5.00) (5.52) (6.01)
830 7.25 875 7.95 915 8.60
(5.41) (5.93) (6.42)
840 7.80 885 8.55 925 9.20
(5.82) (6.38) (6.86)
850 8.40 890 9.05 930 9.75
(6.27) (6.75) (7.27)
860 9.00 900 9.70 940 10.45
(6.71) (7.24) (7.80)
870 9.65 910 10.40 950 11.15
(7.20) 7.76) (8.31)
880 10.30 920 11.10
- - -
(7.68) (8.28)
890 11.00
- - - - - -
(8.21)
Page 24
RPM BHP RPM BHP RPM BHP
(kW) (kW) (kW)
880 3.80 920 4.20 960 4.65
(2.83) (3.13) (3.47)
885 4.15 925 4.60 965 5.00
(3.10) (4.43) (3.73)
890 4.50 930 4.95 970 5.40
(3.36) (3.69) (4.03)
895 4.90 935 5.35 975 5.85
(3.66) (3.99) (4.36)
900 5.30 940 5.75 980 6.30
(3.95) (4.29) (4.70)
905 5.70 945 6.20 985 6.75
(4.25) (4.63) (5.04)
915 6.15 955 6.70 990 7.20
(4.59) (5.00) (5.37)
920 6.60 960 7.15 995 7.70
(4.92) (5.33) (5.74)
925 7.05 965 7.65 1000 8.20
(5.26) (5.71) (6.12)
935 7.60 970 8.15 1010 8.80
(5.67) (608) (6.56)
940 8.10 980 8.75 1015 9.35
(6.04) (6.53) (6.98)
945 8.65 985 9.30 1020 9.95
(6.45) (6.94) (7.42)
955 9.25 995 9.95 1030 10.60
(6.90) (7.42) (7.91)
965 9.90 1000 10.55 1035 11.25
(7.39) (7.87) (8.39)
970 10.50 1010 11.30
- - -
(7.83) (8.43)
980 11.20
- - - - - -
(8.36)
- - - - - - - - -
- - - - - - - - -
- - - - - - - - -
RPM BHP
(kW) (kW)
995 5.10
(3.80)
1000 5.45
(4.07)
1005 5.85
(4.36)
1010 6.30
(4.70)
1015 6.75
(5.04)
1020 7.25
(5.41)
1025 7.70
(5.74)
1035 8.30
(6.19)
1040 8.85
(6.60)
1045 9.40
(7.01)
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -