Adjusting Manifold Gas Pressure - A.O. Smith 240 T-H3J Service Manual

12-14. Adjusting manifold gas pressure

during operation, which can cause a health hazard, damage the water heater,
WARNING
recommended unless there are very strong reasons to do so (e.g. high elevation
Adjusting maximum manifold pressure
secure enough to prevent gas leak.
5. Press and hold down the "MAX"
button, press either the "Increase" or "Decrease"
desired value.
replace the port screw.
Adjusting minimum manifold pressure
secure enough to prevent gas leak.
5. Press and hold down the "MIN"
button, press either the "Increase" or "Decrease"
desired value.
replace the port screw.
240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial
83
Page
CONFIDENTIAL
Ver. 1.00