I have an old wood boiler, a Kerr Titan 101 that is set up in my garage, and water is piped 100 ft into my house. I have a 40 plate hx in the house feeding a 500 gallon storage tank. Tank feeds into radiant floors. All is functional and works but I have a hard time getting the boiler over 130 degrees, even during multi day runs. This is somewhat ok because I'm using it for radiant applications, but I'm curious if these old non gasifier boilers had a hard time heating up.... Any tricks? Blower fan is working fine, installed a damper, exhaust temp good..... Thoughts? Thanks!