kyoboof
Member
Good evening. I posted previously about my coaire tankless water heater issues and these forums were a great help. I had a pressure reducing valve start leaking/losing pressure.
With the help of these great forums we replaced the PRV and added an inline pressure gauge to help monitor the pressure.
2 months later (now) the new PSI gauge sprung a big leak. I replaced the gauge again and all is well.
This got me thinking. Why did a PSI gauge completely fail 2 months in? Could my expansion tank be bad? the psi guage never reads above 19 psi. Other than the gauge leaking the unit functions properly.
I shut off the water going to the unit and drained the unit by manually lifting the pressure release valve until the unit had zero pressure at the gauges, I took my pressure gauge and measured the PSI at the expansion tank shrader valve and it measured ZERO. Does this mean my internal expansion tank failed? Did I test it properly?
If the answer is yes, and the tank has failed. I would like to know if its possible and how to plumb in a external expansion tank. ( if it is possible it will be done by a journeymen gasfitter/plumber) dont worry! Please note this tankless unit also heats my house.
Attached are some detailed pictures of the unit. The expansion tank is circled in red and I also attached a picture of the gauge that was leaking. hopefully this is enough info.
Thanks so much.
With the help of these great forums we replaced the PRV and added an inline pressure gauge to help monitor the pressure.
2 months later (now) the new PSI gauge sprung a big leak. I replaced the gauge again and all is well.
This got me thinking. Why did a PSI gauge completely fail 2 months in? Could my expansion tank be bad? the psi guage never reads above 19 psi. Other than the gauge leaking the unit functions properly.
I shut off the water going to the unit and drained the unit by manually lifting the pressure release valve until the unit had zero pressure at the gauges, I took my pressure gauge and measured the PSI at the expansion tank shrader valve and it measured ZERO. Does this mean my internal expansion tank failed? Did I test it properly?
If the answer is yes, and the tank has failed. I would like to know if its possible and how to plumb in a external expansion tank. ( if it is possible it will be done by a journeymen gasfitter/plumber) dont worry! Please note this tankless unit also heats my house.
Attached are some detailed pictures of the unit. The expansion tank is circled in red and I also attached a picture of the gauge that was leaking. hopefully this is enough info.
Thanks so much.
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