I have oil fired tankless hot water. The boiler is about 165 F and pressure is 25-30 psi. Our tap hot water is 145-155 F. No matter what I do to the mixer valve (Watts 70A), it doesn't change so I guess I need to repair valve. Kit looks like about $35. There is a valve in cold water line that splits cold water between the mixer valve and supply to tankless hot water. Neither the hot water into the mix valve or the tempered water out has a valve.
So, I have questions:
1) Is the boiler temp and pressure acceptable, and if not, how can I adjust?
2) Should I repair or replace the Watts 70A? If replace, are there better alternatives?
3) If I turn the furnace off, close the cold water valve, and loosen the bonnet on the mixing valve, I guess the tankless and the domestic hot water lines will drain. Am I correct?
4) After I repair/replace, will everything be "normal" when I turn on the cold water and oil burner?
Thanks in advance for any help or advice!
So, I have questions:
1) Is the boiler temp and pressure acceptable, and if not, how can I adjust?
2) Should I repair or replace the Watts 70A? If replace, are there better alternatives?
3) If I turn the furnace off, close the cold water valve, and loosen the bonnet on the mixing valve, I guess the tankless and the domestic hot water lines will drain. Am I correct?
4) After I repair/replace, will everything be "normal" when I turn on the cold water and oil burner?
Thanks in advance for any help or advice!