A.O. Smith 240 T-H3J Service Manual page 81

See the table below.
Level Elevation
0
1
2
3
4
Level Elevation
0
1
2
3
4
240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial
Output Fan motor
reduction speed change
Output Fan motor
reduction speed change
81
540 (T-H3) models
computer board
DIPswitch settings
No.2
OFF
OFF
ON
OFF
ON
OFF
ON
ON
DIPswitch settings
No.2
OFF
OFF
ON
OFF
ON
OFF
ON
ON
Page
CONFIDENTIAL
Ver. 1.00
No.3 No.4
OFF OFF
ON OFF
ON OFF
OFF ON
OFF ON
ON ON
ON ON
OFF OFF
No.3 No.4
OFF OFF
ON OFF
ON OFF
OFF ON
OFF ON
ON ON
ON ON
OFF OFF