Briquetmaker said:
I noticed that ZV-1 is closed and c-1 is not running when the BLT control is in back up only or auto back up. They will come on when you switch to wood only. It does seem to be a wiring thing but not sure. I thought it might be a teperature thing with the valve.
When the BLT is set to "back up only" or "auto backup " zv-1 will not open untill your storage is up to temp and trips the back up boiler aquastat, even if your wood boiler is hot enough to provide heat. If you want heat to your zones from the wood boiler before storage is charged the only way is to switch the BLT to "wood only".
Sounds like your system is fine, your just messing with it before its completly up and running, I did the same thing. Also make sure the lever on zv-1 is set to "automatic" not "manual". I had to set mine to manual open to solder it and forgot to switch back to automatic when I finished, the first time my oil burner fired the cold side of the storage started to get hot.
This plumbing set up should work awesome.