2oldman wrote:
Maybe I'm missing something, but is this about the regulator not showing red quickly enough, or another leak?
Leak. The test works like this.
Open tank valves and "Charge" (pressurize) the line.
Close tank valves, all burner valves, Furnace, Water heater set to OFF.
See how long it takes indicator to move from Green to Red.
There are many possible sources of very slow leaks
Any and all fittings
Burner valves and solenoid vavles.
The Regulator itself.
The change over valve.
A leak this slow is not likely to go Kaboom.