Triangle Tube Excellence tank leak?

mcycle

Just installed not tied-in yet. Flushing and pressure testing stage.I pressurized the "inner" tank 1st than the "outer" tank "per instructions".<span>The pressure gauge "slowly"climbed to 20 psi (it was set at 12) so I brought it back down to 12psi and shut the isolation valve to the Watts 9D "PRV".</span><span>I watched as the pressure gauge "slowly" climb over the 12 psi mark.</span><span>I drained the "heating" tank leaving the "domestic" tank filled "per instructions" and watched as a small amount of water would periodically drip from the "heating" tank drain valve.</span><span><span>Any suggestions? I'm going to call Triangle Tube tomorrow.</span><span>Not happy, why should I have to eat a day labor if the tank needs to be replaced.</span></span>

Ron Jr._3

Sounds like

the classic symptoms of a tank in tank leak . I'm assuming the pressure in the boiler is rising while it's not running ? Can you isolate the heating zone going to the tank to see what happens with the boiler ?

mcycle

steel tube in stainless tank

This is all during pressure testing; the gas meter isn’t hooked up yet.

I isolated and drained the “outer” heating section and watched a tiny amount of water drip out of the boiler side drain.

It does appear to be a tank in tank leak.