This used boiler has two burners that can be controlled individually and has been fully insulated post manufacturing (this is why the boiler has been wrapped in stainless steel sheeting. The controllers have been disconnected and sold elsewhere, so unfortunately it will need to be re-wired. Additionally, one of the burner units appears to have been damaged in storage, so while the unit was fully operational when disconnected, there might be a need to replace a burner unit. Please contact with any questions, I’d be happy to chat over the phone or do a video call to allow for closer inspection before purchasing. Additionally, please reach out for more photos as well. Thanks!