Fan Speed Settings - Lennox LC22 Installation Operation & Maintenance

FAN SPEED SETTINGS

O O O
I I I
ON +5v +10v 3 spd
LC22
SL
EL
ML
M
LC31
SL
EL
ML
M
LC45
SL
EL
ML
M
LC60
SL
EL
ML
M
LC76
SL
EL
ML
M
LENN X
R
I
FAN SPEED SETTINGS
II
To achieve the design speed use a combination of main tappings on
III
the transformer and switch positions on the outside of the control box.
MAIN TAPPINGS
Wh Yel
120 135
120 135
L
135 150
135 150
150 165
H 150 165
MAIN TAPPINGS
Wh Yel
120 135
120 135
L
135 150
135 150
150 165
H 150 165
MAIN TAPPINGS
Wh Yel
120 135
120 135
L
135 150
150 165
165 180
H
165 180
MAIN TAPPINGS
Wh Yel
120 135
120 135
L
135 150
135 150
150 165
H
150 165
MAIN TAPPINGS
Wh Yel
120 135
120 135
L
135 150
150 165
165 180
H
165 180
SWITCH POSITIONS
Rd 3 spd + 10v
150 I I
150 II O
165 II O
165 II I
180 II O
180 III I
SWITCH POSITIONS
Rd 3 spd + 10v
150 I I
150 II O
165 II O
165 II I
180 II O
180 III 0
SWITCH POSITIONS
Rd 3 spd + 10v
150 I I
150 II O
165 II O
180 II O
195 II I
195 III I
SWITCH POSITIONS
Rd 3 spd + 10v
150 I I
150 II O
165 II O
165 II I
180 II O
180 III I
SWITCH POSITIONS
Rd 3 spd + 10v
150 I I
150 II I
165 II O
180 II O
195 II O
195 III O
5
OUTPUT
+ 5v VOLTS
O 130
I 140
150
O
O 160
I 170
O 190
OUTPUT
+ 5v VOLTS
O 130
I 140
O 150
O 160
I 170
O 180
OUTPUT
+ 5v VOLTS
O 130
140
I
I 155
I 170
O 190
205
O
OUTPUT
+ 5v
VOLTS
O 130
140
I
O 150
O 160
I 170
190
O
OUTPUT
+ 5v
VOLTS
O 130
O 145
I 155
I 170
O 180
I 200