We just bought a house and in one room, which is a den/office we found a very strange setup. It looks like a shutoff valve for the baseboard heater in that room. I think it is just a gate valve (please see the photo). It is leaking slowly through the stem.
I think it may be just a simple...
I have an electric boiler that is producing only warm water (90 F). Model# HYDRA15-E2401M-B, manufactured by Dettson.
The boiler has a temperature setting on the PCB and a mechanical aquastat(Honeywell L4008A) for high temperature cutoff. And they are set to 170F and 190F (high-limit)...