1906 water boiler converted to natural gas.
My client purchased this home under the assumption boiler worked.
I found it has a water gauge on top left and a small possibly broken temprature gauge on top right.
There is a floor standing expansion tank with no vents that I can find.
The only control other than a heating thermostat and thermocouples on the gas valve.
Shouldn't this have a Aquastat and low water cut off?
What water pressure should we have.
It is a gravity hot water boiler... Low water cutoffs and aquastats are a new invention compared to the age of the boiler. A stack switch was used to control the temperature. A new boiler is prob. the way to go.