So, as I mentioned in my last post, my hot water storage tank blew a leak. Its ridiculously old, and rusted out on the bottom. We had about a 1/2 inch of water on the basement floor. It took a few hours, but all of that has been cleaned up.
I purchased a new tank, and a whole **** load of copper fittings. Yesterday I removed the old tank, and installed the new one. I spent about 8 hours dry fitting, cleaning, fluxing, and soldering. Then came the moment of truth. I turned the water on, I opened the hot water faucet that was closest to the tank. I listened while the new 40 gallon tank filled up, and to my complete amazement. No leaks. Every soldered joint that I did was good. Water was now flowing through all the pipes, the new tank, the pump, and all the faucets in the house. Not a drop of water was leaking. I felt like I was now on the home stretch.
Next, the new tank had to be wired up. Not as a hot water heater, but just as a storage tank. I have 110 going in the top of the tank, it bypasses the top thermostat, and top heating element. It only attaches to the bottom thermostat, and also the pump.
It was now time to turn on the boiler.
So, I hit the red switch. The boiler fires right up, and I can hear the pump go on.
My wife and I are now doing the happy dance.
The happy dance did not last very long. About 5 minutes. That's about how long it took for us to realize something was wrong. The pipe on the top on the new tank was getting unbelievably hot. The pipe at the bottom of the new tank, where the pump is, was ice cold.
So that's why I am starting this thread. We still Have NO HOT WATER.
I have attached before and after photos. Absolutely nothing is different, other than the new tank. Everything was plumbed exactly like it was. It's been working with this configuration perfectly fine for 30 years. We very rarely ever run out of hot water.
What could possibly be wrong. The water flowed freely through the pipes, the pump, the coil, the new tank, and all the faucets.
Is it possible that I can hear the pump running, yet it's not pumping the water. Could my luck be that bad. Could the pump have broken at the same time I had the leak.
The leak was catastrophic.
The entire tank emptied out.
I did cut the power to the pump, but it ran for a few hours with the empty tank.
I can hear the pump motor running, but it's not circulating any water.
I would hate to change out the pump for a new one, without knowing for sure that is the problem.
I'm guessing that it's my only option. It’s a,
Little Giant circulating pump model # CMD-100-3B
It appears that this model is no longer made, or available.
I would also welcome any suggestions as to what an equivalent model pump I could use.
Any input on this whole mess would be welcome.
73 year old one pipe system with original American standard boiler, oil fired becket, 2 inch steel pipe main, 100 feet long, with 8 radiators above.