Lennox LGA Series Unit Information page 11

AIR RESISTANCE - FACTORY INSTALLED OPTIONS/FIELD INSTALLED ACCESSORIES
Air Volume Air Volume
LCA/LGA
cfm L/s 036S/036H/042S/
042H/048S/060S (2 row)
800 380
1000 470
1200 565
1400 660
1600 755
1800 850
2000 945
2200 1040
2400 1135
2600 1225
2800 1320
3000 1415
AIR RESISTANCE - CEILING DIFFUSERS
Air Volume Air Volume
2 Ends
cfm L/s
Open
800 380 0.15 (37
1000 470 0.19 (47
1200 565 0.25 (62
1400 660 0.33 (82
1600 755 0.43 (107
1800 850 0.56 (139
2000 945 0.73 (182
2200 1040 0.95 (237
2400 1135 - - - -
2600 1225 - - - -
2800 1320 - - - -
3000 1415 - - - -
AIR THROW DATA - RTD9-65 CEILING DIFFUSER
Air Volume
cfm L/s
1000 470
1200 565
1400 660
1600 755
1800 850
2000 945
2200 1040
AIR THROW DATA - RTD11-95 CEILING DIFFUSER
2600 1225
2800 1320
3000 1415
3200 1510
3400 1605
¡Effective throw based on terminal velocities of 75 ft. (22.9 m) per minute.
Total Resistance — inches water gauge (Pa)
Wet Indoor Coil
LCA/LGA
048H/060H/072S (3 row)
0.02 (4) 0.04 (9)
0.02 (4) 0.05 (12)
0.03 (8) 0.06 (16)
0.04 (10) 0.08 (21)
0.05 (13) 0.10 (26)
0.06 (16) 0.12 (31)
0.07 (18) 0.14 (36)
0.09 (21) 0.17 (42)
0.11 (27) 0.19 (48)
0.13 (32) 0.22 (54)
0.16 (40) 0.25 (63)
0.20 (50) 0.29 (71)
RTD9 Step-Down Diffuser
1 Side All Ends &
2 Ends Open Sides Open
0.13 (32) 0.11 (27)
0.16 (40) 0.14 (35)
0.20 (50) 0.17 (42)
0.26 (65) 0.20 (50)
0.32 (80) 0.20 (50)
0.40 (100) 0.30 (75)
0.50 (125) 0.36 (90)
0.63 (157) 0.44 (110)
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
¡Effective Throw
ft. m
10-17 3-5
11-18 3-5
12-19 4-6
12-20 4-6
13-21 4-6
14-23 4-7
16-25 5-8
24-29 7-9
25-30 8-9
27-33 8-10
28-35 9-11
30-37 9-11
BLOWER DATA
LCA/LGA072H
(4 row)
0.05 (13)
0.07 (18)
0.09 (24)
0.12 (31)
0.15 (38)
0.18 (46)
0.21 (53)
0.25 (62)
0.28 (70)
0.31 (77)
0.36 (88)
0.41 (101)
Total Resistance — inches water gauge (Pa)
FD9 Flush FD9 Flush
2 Ends
Diffuser
Open
0.11 (27) - - - -
0.14 (35) - - - -
0.17 (42) - - - -
0.20 (50) - - - -
0.24 (60) - - - -
0.30 (75) 0.13 (32)
0.36 (90) 0.15 (37)
0.44 (110) 0.18 (45)
- - - - 0.21 (52)
- - - - 0.24 (60)
- - - - 0.27 (67)
- - - - 0.32 (80)
AIR THROW DATA - FD9-65 CEILING DIFFUSER
Air Volume
cfm
1000
1200
1400
1600
1800
2000
2200
AIR THROW DATA - FD11-95 CEILING DIFFUSER
2600
2800
3000
3200
3400
¡Effective throw based on terminal velocities of 75 ft. (22.9 m) per minute.
Page 11
Electric Heat Electric Heat
(LCA Models)
0.04 (10)
0.06 (15)
0.09 (22)
0.12 (30)
0.16 (40)
0.21 (52)
0.25 (62)
0.31 (77)
0.37 (92)
0.43 (107)
0.50 (125)
0.58 (144)
RTD11 Step-Down Diffuser
1 Side All Ends &
2 Ends Open Sides Open
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
0.11 (27) 0.09 (22)
0.13 (32) 0.11 (27)
0.15 (37) 0.12 (30)
0.18 (45) 0.15 (37)
0.21 (52) 0.18 (45)
0.24 (60) 0.21 (52)
0.29 (72) 0.25 (62)
¡Effective Throw — ft. (m)
L/s ft.
470 15-20
565 16-22
660 17-24
755 18-25
850 20-28
945 21-29
1040 22-30
1225 19-24
1320 20-28
1415 21-29
1510 22-29
1605 22-30
Economizer
0.04 (10)
0.04 (10)
0.04 (10)
0.04 (10)
0.04 (10)
0.05 (12)
0.05 (12)
0.05 (12)
0.05 (12)
0.06 (15)
0.06 (15)
0.06 (15)
FD11 FD11
Flush
Diffuser
- - - -
- - - -
- - - -
- - - -
- - - -
0.09 (22)
0.10 (25)
0.12 (30)
0.14 (35)
0.17 (42)
0.20 (50)
0.25 (62)
m
5-6
5-7
5-7
5-7
6-9
6-9
7-9
6-7
6-9
6-9
7-9
7-9