Lennox LHT Series Service Manual page 38

Unit
Model Speed
Low
Std
LDT156H
Med
HP W/O EH
LHT156H
15, 30, 45, 60, 90 KW
Low
Std
LDT180H
Med
High
HP W/O EH
LHT180H
15, 30, 45, 60, 90 KW
Low, Std, Med
LDT240H
High
HP W/O EH
LHT240H
15, 30, 45, 60, 90 KW
*Use highest value between Heating and Cooling High CFM Max.
*Use highest value between Heating and Cooling High CFM Max.
TABLE 12
COOLING MINIMUM AND MAXIMUM CFM
Cooling Low CFM
LHT
De-
Unit
Min
fault
156H 3380 1500
180H 3900 2000
240H 5200 3000
*Use Cooling High CFM Max
HEATING, VENTILATION & SMOKE MINIMUM AND MAXIMUM CFM
Default
Heat Code
L
S
M 6000
N
E, J, K, L,
L
S
M
6000
H
N
E, J, K, L, P
L, S, M
H
8000
N
E, J, K, L, P
Cooling High CFM
De-
Max Min
fault
6250 4675 4000
7200 5400 5000
9600 7200 6250
TABLE 11
Heating CFM
Min
Max Default
2725
4325
4500 6250 5200
3900
6000
2725
4325
4500
7200 6000
5125
4500
6000
4500
5125
9600 8000
6000
6000
Max
6250
7200
9600
Page 38
Vent CFM
Min Default
Max
1950 62500 5200
2250 7200 6000
3000 9600 8000
Smoke CFM
Min
Max
1950 6250
2250 7200
3000 9600