Lennox LGA Series Unit Information page 9

BLOWER TABLE INCLUDES RESISTANCE FOR LCA BASE UNIT ONLY WITH DRY INDOOR COIL AND AIR FILTERS IN PLACE.
ADD:
1 - Wet indoor coil air resistance of selected unit.
2 - Any factory installed options air resistance (electric 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 26 for blower motors and drives and Page 27 for wet coil and options/accessory air resistance data.
MINIMUM AIR VOLUME REQUIRED FOR USE WITH OPTIONAL ELECTRIC HEAT
7, 10, 15, 20 kW Electric Heat - 1400 cfm (660 L/s) 208/230 volt, 1500 cfm (710 L/s) 460 & 575 volt
25 kW Electric Heat - 2000 cfm (945 L/s)
30 kW Electric Heat - 2400 cfm (1135 L/s)
NOTE - LCA UNITS ARE NOT U.L. APPROVED FOR OPERATION ABOVE 1325 RPM.
LCA BASE UNIT
Air Air
Volume Volume Volume
.00 (00) .20 (50)
cfm cfm
RPM BHP RPM
(L/s)
(kW)
310 0.05 455
900
(0.04)
(427)
330 0.05 470
1000
(0.04)
(474)
375 0.10 505
1200
(0.07)
(568)
425 0.15 545
1400
(0.11)
(663)
475 0.20 590
1600
(0.15)
(757)
535 0.30
1800 640
(0.22)
(850)
595 0.40
2000 690
(0.30)
(945)
2200 655 0.55 740
(1040) (0.41)
2400 710 0.70 790
(1135) (0.52)
2600 770 0.90 845
(1229) (0.67)
2800 830 1.10 900
(1323) (0.82)
3000 890 1.35 955
(1418) (1.01)
BLOWER TABLE INCLUDES RESISTANCE FOR LGA BASE UNIT ONLY WITH DRY INDOOR COIL AND AIR FILTERS IN PLACE.
ADD:
1 - Wet indoor coil air resistance of selected unit.
2 - Any factory installed options air resistance (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 26 for blower motors and drives and Page 27 for wet coil and options/accessory air resistance data.
NOTE - LGA UNITS ARE NOT U.L. APPROVED FOR OPERATION ABOVE 1325 RPM.
LGA BASE UNIT
Air Air
Volume Volume Volume
.00 (00) .20 (50)
cfm cfm
RPM BHP RPM
(L/s)
(kW)
350 0.05 495
900
(0.04)
(425)
375 0.10 515
1000
(0.07)
(470)
430 0.15 560
1200
(0.11)
(565)
490 0.20
1400 615
(0.15)
(660)
560 0.35
1600 670
(0.26)
(755)
1800 630 0.50 730
(850) (0.37)
2000 700 0.65 790
(945) (0.48)
2200 770 0.85 855
(1040) (0.63)
2400 840 1.15 920
(1135) (0.86)
2600 910 1.45 980
(1225) (1.08)
2800 980 1.80 1050
(1320) (1.34)
3000 1050 2.20 1115
(1415) (1.64)
BELTDRIVE BLOWER DATA
Total Static Pressure — Inches Water Gauge (Pa)
.40 (100) .60 (150)
BHP RPM BHP RPM BHP
(kW) (kW) (kW)
0.10 595 0.15
720 0.25
((0.07) (0.11)
(0.19)
0.10 605 0.20
725 0.30
(0.07) (0.15)
(0.22)
0.15
630 0.25 740 0.35
(0.11)
(0.19) (0.26)
0.20
660 0.30 760 0.40
(0.15)
(0.22) (0.30)
0.30
695 0.40 790 0.50
(0.22)
(0.30) (0.37)
0.40 735 0.50 820 0.60
(0.30) (0.37) (0.45)
0.50 775 0.60 860 0.70
(0.37) (0.45) (0.52)
0.65 820 0.75 895 0.85
(0.48) (0.56) (0.63)
0.80 870 0.95 940 1.05
(0.60) (0.71) (0.78)
1.00 915 1.15 985 1.30
(0.75) (0.86) (0.97)
1.25 965 1.35 1030 1.50
(0.93) (1.01) (1.12)
1.50 1015 1.65 1075 1.80
(1.12) (1.23) (1.34)
Total Static Pressure — Inches Water Gauge (Pa)
.40 (100) .60 (150)
BHP RPM BHP RPM
(kW) (kW)
0.10
630 0.20 750
(0.07)
(0.15) (0.22)
0.15
645 0.20 760
(0.11)
(0.15) (0.22)
0.20
680 0.25 785
(0.15)
(0.19) (0.26)
0.30 725 0.35 820
(0.22) (0.26) (0.34)
0.40 770 0.50 860
(0.30) (0.37) (0.45)
0.55 820 0.65 905
(0.41) (0.48) (0.56)
0.75 875 0.85 955
(0.56) (0.63) (0.71)
0.95 930 1.05 1005
(0.71) (0.78) (0.86)
1.25 990 1.35 1060
(0.93) (1.01) (1.08)
1.55 1050 1.65 1115
(1.16) (1.23) (1.31)
1.90 1110 2.05 1170
(1.42) (1.53) (1.60)
2.35 1175 2.45 1230
(1.75) (1.83) (1.94)
.80 (200) 1.00 (250)
RPM BHP RPM BHP
(kW) (kW)
825 0.40 925 0.55
(0.30) (0.41)
830 0.40 925 0.55
(0.30) (0.41)
840 0.45 930 0.60
(0.34) (0.45)
855 0.50 940 0.65
(0.37) (0.48)
875 0.60 960 0.75
(0.45) (0.56)
905 0.70 980 0.85
(0.52) (0.63)
935 0.85 1010 1.00
(0.63) (0.75)
970 1.00 1040 1.15
(0.75) (0.86)
1010 1.20 1075 1.35
(0.90) (1.01)
1050 1.40 1110 1.55
(1.04) (1.16)
1090 1.65 1150 1.85
(1.23) (1.38)
1135 1.95 1190 2.10
(1.45) (1.57)
.80 (200) 1.00 (250)
BHP RPM BHP RPM BHP
(kW) (kW) (kW)
0.30 855 0.40 950 0.60
(0.30) (0.45)
0.30 860 0.45 955 0.60
(0.34) (0.45)
0.35 885 0.50 970 0.65
(0.37) (0.48)
0.45 910 0.55 995 0.70
(0.41) (0.52)
0.60 945 0.70 1025 0.80
(0.52) (0.60)
0.75 985 0.85 1060 1.00
(0.63) (0.75)
0.95 1030 1.05 1100 1.20
(0.78) (0.90)
1.15 1075 1.30 1140 1.40
(0.97) (1.04)
1.45 1125 1.55 1190 1.70
(1.16) (1.27)
1.75 1175 1.90 1235 2.05
(1.42) (1.53)
2.15 1230 2.30 1285 2.40
(1.72) (1.79)
2.60 1285 2.70
- - - -
(2.01)
Page 9
BOLD ITALICS INDICATE FIELD FURNISHED DRIVE.
1.20 (300) 1.40 (350) 1.60 (400)
RPM BHP RPM BHP RPM
(kW) (kW)
1015 0.70 1100 0.90 1180
(0.52) (0.67)
1015 0.70 1095 0.90 1175
(0.52) (0.67)
1015 0.75 1095 0.90 1170
(0.56) (0.67)
1020 0.80 1100 0.95 1170
(0.60) (0.71)
1035 0.90 1110 1.05 1180
(0.67) (0.78)
1055 1.00 1125 1.15 1195
(0.75) (0.86)
1080 1.15 1145 1.30 1210
(0.86) (0.97)
1105 1.30 1170 1.45 1230
(0.97) (1.08)
1135 1.50 1200 1.70 1260
(1.12) (1.27)
1170 1.75 1230 1.90 1285
(1.31) (1.42)
1210 2.00 1265 2.20 1320
(1.49) (1.64)
1245 2.30 1300 2.50
(1.72) (1.87)
BOLD ITALICS INDICATE FIELD FURNISHED DRIVE.
1.20 (300) 1.40 (350) 1.60 (400)
RPM BHP RPM BHP RPM
(kW) (kW)
1035 0.75 1120 1.00 1195
(0.56) (0.75)
1040 0.75 1120 1.00 1195
(0.56) (0.75)
1055 0.80 1130 1.00 1205
(0.60) (0.75)
1075 0.85 1150 1.05 1220
(0.63) (0.78)
1100 0.95 1170 1.15 1240
(0.71) (0.86)
1130 1.10 1200 1.30 1265
(0.82) (0.97)
1165 1.30 1230 1.45 1295
(0.97) (1.08)
1325
1205 1.55 1265 1.70
(1.16) (1.27)
1250 1.85 1305 2.00
(1.38) (1.49)
1295 2.20
- - - -
(1.64)
- - - - - - - -
- - - - - - - -
1.80 (450)
BHP RPM BHP
(kW) (kW)
1.10 1255 1.30
(0.82) (0.97)
1.10 1250 1.30
(0.82) (0.97)
1.10 1240 1.30
(0.82) (0.97)
1.10 1240 1.35
(0.82) (1.01)
1.25 1245 1.40
(0.93) (1.04)
1.35 1255 1.50
(1.01) (1.12)
1.50 1270 1.65
(1.12) (1.23)
1.65 1290 1.85
(1.23) (1.38)
1.85 1315 2.05
(1.38) (1.53)
2.10
- - - -
(1.57)
2.35
- - - -
(1.75)
- - - - - - - -
1.80 (450)
BHP RPM BHP
(kW) (kW)
1.25 1270 1.50
(0.93) (1.12)
1.20 1270 1.45
(0.90) (1.08)
1.20 1275 1.45
(0.90) (1.08)
1.25 1285 1.45
(0.93) (1.08)
1.30 1305 1.50
(0.97) (1.12)
1325 1.65
1.45
(1.08)
(1.23)
1.65
- - - -
(1.23)
1.85
- - - -
(1.38)
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -