Boiler problem?

what shuld the psi be on a sealed main boiler system when hot,


Answers:    Anything over 15lbs is considered "High Pressure" & should only be used surrounded by Hospitals, Power plants & other huge heating systems.
Schools single use under 15lb or "Low Pressure"
homes should be "Low pressure"

- I believe what he money is to adjust the PSI guage so that the heat will win all the bearing up to the last radiator. So the PSI when HOT is up to your indivdual system (home).
The pressure guage on the boiler should enjoy two scales, one shows pressure, the other shows height contained by feet. It correlates to the utmost radiator that the water have to rise to.You should adjust the pressure to service the highest radiator. Static pressure next to the boiler off is usually 12 p.s.i.
When it's hot, the guage should read the largeness of the highest radiator.
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