Lennox LGA Series Unit Information page 10

FACTORY INSTALLED BELT DRIVE KIT SPECIFICATIONS
Nominal hp
Standard or High Efficiency - 1.5
Standard or High Efficiency - 2
Standard Efficiency Only - 3
*Using total air volume and system static pressure requirements determine from blower performance tables rpm and motor output required. Maximum usable output of motors
furnished by Lennox are shown. In Canada, nominal motor output is also maximum usable motor output. If motors of comparable output are used, be sure to keep within the
service factor limitations outlined on the motor nameplate.
LGA/LCA036-060 DIRECT DRIVE BLOWER PERFORMANCE @ 208 VOLTS (Downflow)
External Static Pressure External Static Pressure
in. w.g. Pa
0 0
.10 25
.20 50
.30 75
.40 100
.50 125
.60 150
.70 175
.80 200
.90 225
1.00 250
1.10 275
1.20 300
NOTE — All air data is measured external to unit with 2 row dry coil and 2 inch (51 mm) filters.
LGA/LCA036-060 DIRECT DRIVE BLOWER PERFORMANCE @ 230 VOLTS (Downflow)
External Static Pressure External Static Pressure
in. w.g. Pa
0 0
.10 25
.20 50
.30 75
.40 100
.50 125
.60 150
.70 175
.80 200
.90 225
1.00 250
1.10 275
1.20 300
NOTE — All air data is measured external to unit with 2 row dry coil and 2 inch (51 mm) filters.
LGA/LCA036-060 DIRECT DRIVE BLOWER PERFORMANCE @ 460/575 VOLTS (Downflow)
External Static Pressure External Static Pressure
in. w.g. Pa
0 0
.10 25
.20 50
.30 75
.40 100
.50 125
.60 150
.70 175
.80 200
.90 225
1.00 250
1.10 275
1.20 300
NOTE — All air data is measured external to unit with 2 row dry coil and 2 inch (51 mm) filters.
BELTDRIVE BLOWER DATA
Motor Outputs
Maximum hp Nominal kW
1.72 1.1
2.3 1.5
3.45 2.2
DIRECTDRIVE BLOWER DATA
High Medium-High
cfm L/s cfm
2530 1195 2265
2495 1175 2235
2450 1155 2200
2405 1135 2160
2355 1110 2115
2300 1085 2065
2235 1055 2010
2165 1020 1945
2090 985 1875
2000 945 1790
1895 895 1695
1770 835 1580
1620 765 1440
High Medium-High
cfm L/s cfm
2750 1300 2500
2705 1275 2470
2650 1250 2430
2585 1220 2390
2535 1195 2340
2475 1170 2290
2405 1135 2225
2330 1100 2155
2245 1060 2075
2155 1015 1975
2050 965 1860
1935 915 1720
1805 850 1560
High
cfm
2820
2770
2720
2670
2610
2545
2475
2400
2315
2220
2115
2000
1860
Maximum kW Drive 1
1.3 615 - 920
1.7 - - - -
2.6 - - - -
Air Volume at Various Blower Speeds
Medium
L/s cfm L/s
1070 1970 930
1055 1945 920
1040 1915 905
1020 1880 890
1000 1840 870
975 1795 845
950 1745 825
920 1690 800
885 1620 765
845 1550 730
800 1460 690
745 1360 640
680 1240 585
Air Volume at Various Blower Speeds
Medium
L/s cfm L/s
1180 2245 1060
1165 2215 1045
1145 2180 1030
1130 2140 1010
1105 2100 990
1080 2050 965
1050 1995 940
1015 1930 910
980 1865 880
930 1780 840
880 1690 800
810 1585 750
735 1450 685
Air Volume at Various Blower Speeds
Medium
L/s cfm
1330 2460
1305 2430
1285 2395
1260 2345
1230 2310
1200 2260
1170 2200
1130 2140
1090 2065
1045 1980
1000 1880
945 1760
875 1615
Page 10
RPM Range
Drive 2 Drive 3
800 - 1105 - - - -
- - - - 920 - 1230
- - - - - - - -
Medium-Low
cfm L/s cfm
1720 810 1440
1700 800 1430
1670 790 1415
1640 775 1390
1605 755 1360
1565 740 1330
1515 715 1290
1460 690 1245
1400 660 1195
1330 630 1130
1250 590 1055
1160 545 975
1055 500 870
Medium-Low
cfm L/s cfm
1955 925 1630
1925 910 1600
1890 890 1570
1850 875 1535
1810 855 1500
1760 830 1455
1705 805 1405
1640 775 1365
1575 745 1310
1495 705 1240
1405 665 1150
1290 610 1040
1160 545 915
Low
L/s cfm
1160 1975
1145 1950
1130 1920
1105 1885
1090 1845
1065 1800
1040 1755
1010 1700
975 1635
935 1565
885 1480
830 1370
760 1260
Drive 4
- - - -
- - - -
1070 - 1325
Low
L/s
680
675
670
655
640
630
610
590
565
535
500
460
410
Low
L/s
770
755
740
725
710
685
665
645
620
585
545
490
430
L/s
930
920
905
890
870
850
830
800
770
740
700
647
595