A.O. Smith T-M50 ASME Service Manual page 74

5. Press and hold down the "MIN" button on the computer board. While holding down the "MIN"
button, press either the "Increase" or "Decrease" button to increase or decrease the manifold gas
pressure, respectively (Figure 3). Refer to the manometer to verify that pressure has been set to
desired value.
6. When the minimum gas pressure of the combustion unit is being adjusted, the combustion of the
other combustion unit must be set to MINIMUM.
7. Repeat these steps for the other combustion section. The manifold pressure on both combustion
sections must be at the same value.
8. After gas pressure has been set, deactivate the T-M50, remove the manometer tube, and replace the
port screw.
Figure 1
Figure 2
To Manometer
T-M50 / T-M50 ASME Service Manual
Manifold port
MAX button
MIN button
Increase button
Decrease button
Tube
74
CONFIDENTIAL
Figure 3
Computer board for Burner control
Ver. 1.05