A.O. Smith T-H2-DV Service Manual page 84

NOTE: The dark square is the direction
the dipswitch should be set to.
Figure.1 Left bank of dipswitch settings
For example;
Fan motor for combustion
Fan motor for exhaust
If the combustion fan motor speed is adjusted, the exhaust fan motor speed will also
change proportionally. See the table above.
T-H2-DV/T-H2-OS Service Manual
"MAX" button
"Increase" button
Figure.2 T-H2-DV/T-H2-OS Computer board
Variation for fan motor speed
-10.0 -5.0 -1.0
-6 -3 -0.6
84
CONFIDENTIAL
Ver. 1.01
"MIN" button
"Decrease" button
(Unit: %)
0 1.0 5.0
0 0.6 3
10.0
6