scrubbing bio gas

[mattkoster]

Ok so my biogas tank is working pretty well. I can get the gas to burn from a torch connected to the tank but not in my water heater. any ideas why?

 

[HeinrichK]

A bit obvious perheaps but:

-Have you got enough pressure to overcome the controls inside the boiler?
-Have you played with the fuel to air ratio?
-How is flame detection done in the boiler?

Martijn