I have a 17 year old hot water heater. I had to replace the
thermocouple. Upon re-assembly, there is a sliding collar that can be
adjusted to control how much air is mixed with the gas and thus
controls the strength of the flame.
1 - how do you know when the collar is in the optimal position ? do
you adjust based on flame color or flame height ?
2 - since the repair, i have a mild natural gas odor (maybe a bit
stronger than mild) that exists when the hot water heater burner is
running. it can be smelled throughout a good part of the house - any