Happymeals

Hey thanks for your reply Tony. yes sorry hot water tank - calorifier. It was gravity fed so no pump and we had an expansion tank on the domestic hot water. We did have two PRV on the tank itself as we installed ourselves so seems so strange they both failed? One pressure and one thermo I think? We do have a pump for the cold water which obviously replaces water in the hot water tank but that was working fine. I don’t think there was an air leak into the stove as it was always a bit hard to get going and never burned that well (may be due to the damp leak). it seems so strange as to why it failed we even got someone to come and look at it before it burst and he said it looked fine. The water temp in the calorifier was obviously too hot which built up pressure but no idea why it burst before the expansion tank and PRV were activated? The system was brand new so shouldn’t of had anything blocking water flow

I have a morso squirrel with back burner which we are running a calorifier 94L and small towel rail off. We found hot water to be scalding while the room wasn’t that warm. Stove was brought second and Realised we had quite a bad leak in the back boiler that must have been leaking inside the log burner. We were having to top up the system everyday with water. Would this have made a difference to the heat in the room? Anyway the hot water tank has now burst at the welded seam even though we had two pressure relief valves on it. We have no idea why our system ran too hot? We were using the stove sensibly running it with a shovel of coal at a time not over loading it. Should we have had more heat sinks in the system? We are wondering how to proceed. thinking of temp using the log burner unconnected and dry? Is this dangerous? Don’t know wither to try again with another back boiler or to just remove and try and think of a better way for heating and hot water.