Laosh

Steve_210

I remember reading about a hot water coil on a steam boiler does anybody know what section of the book?
Just trying to remember the summer and winter effects.
Obviously, you can keep the coil covered with water in the summer, but not the winter.

mattmia2

They are mounted low enough that they are below the low water line so they are always in the water in the boiler.

ChrisJ

mattmia2 said:

They are mounted low enough that they are below the low water line so they are always in the water in the boiler.

Mostly.
The Burnham V8 I had said to raise the water line in the summer for better hot water.

SteamingatMohawk

Hopefully your system has a mixing valve to reduce the hot water from the boiler. I had a baseboard hot water system in the late 70s with the "domestic coil" running at 180F for heat, no mixing valve and the water at the faucets was dangerously hot. Dishwasher cleaned items were clean!!!

Steve_210

Yes, the holby mixing valve was an issue thermostat has been replaced.
but I could not raise the water level above the coil or I would not have enough steam chest obviously in the summer it’s not a problem.

panick007

Are you referring to "How to run a hot-water zone off a steam boiler"? That is page 484 in LAoSH

mattmia2

maybe there are different tankless coils for steam and hot water applications and you have the hot water one.

Steve_210

No, it’s for a steam system. It’s a common problem. The hot water coil would not make a difference. It’s the level of the water in the steam boiler.