I am wondering if anyone has info on Chappee hand fed boilers. My business partner has one and it is set up to burn coal although he is a wood burner.( I am converting him) The problem is finding parts for it and it is difficult to regulate. He is trying to find the aquastat that was on it previously to make it more responsive to temp swings.
Today while I was there he showed me what it is doing. It had a nice fire going and the water temp was just over 180. He opened the door and put in enough coal(nut) to cover the burning bed. It immediately started to ignite and the blue flames were dancing on the top. Within 5 minutes his water temp dropped to 170 and continued down to 155 even though there was no call from the house. I have observed this in my flue temps but not in the water temps. It took 20 minutes to start to regain the heat in the water. And because someone will ask, no he does not have a baro in the flue. I am convincing him to install one but the lack of one does not explain loosing 30 degrees of temp in at least 30 gallons of water. How can it cool the water down? I told him the info in the Harman post about how to add coal to a hand fed boiler. We shook down the grates gently until several nuggets fell through. I put my hand over the draft door held wide open and I could feel a good draft. There must be at least a foot or 16 inches of burning coal over the grates. It seems to be operating well but at times it just goes out or does not seem to produce any heat for the fire in it.(baro)