Hi. It's cold as heck in Austin. Temps dropped to single digits last night in Austin. Last night loss power @ 2AM. This morning around 11:30am, heard a loud explosion coming from outside area where the tankless water heater system is installed. Noticed that the expansion tank exploded. You can see ice inside the tank. I have been dripping hot and cold water from all of my faucets since Friday.
I have a few questions.
What caused it? Did losing power help cause it? Tankless system is heated by natural gas but system is electric. Did losing power and not turning off the gas cause the pressure to build? Just wondering if there's anything I did wrong so that I can NOT do that again next time.
What do I do now? I know that when the temps finally allow for a thaw (probably Friday or Saturday), water is going to rush out of the gaping crack in the expansion tank. As such, I shut off the water from the hot and cold pipes to the tankless system. My concern is will those pipes now freeze because it's not being circulated? What else should I be doing or not doing?
After
Before
Thanks in advance.
I have a few questions.
What caused it? Did losing power help cause it? Tankless system is heated by natural gas but system is electric. Did losing power and not turning off the gas cause the pressure to build? Just wondering if there's anything I did wrong so that I can NOT do that again next time.
What do I do now? I know that when the temps finally allow for a thaw (probably Friday or Saturday), water is going to rush out of the gaping crack in the expansion tank. As such, I shut off the water from the hot and cold pipes to the tankless system. My concern is will those pipes now freeze because it's not being circulated? What else should I be doing or not doing?
After
Before
Thanks in advance.
