The usual test is any number over 8. 50 psi isn't out of the ordinary.
I check the gauge at the beginning of an inspection and again when I am ready to leave. It might be 5 minutes....maybe 10 and almost never 15.
I have encountered tests with the furnace connected, the shut-off valve open and a 60 psi gauge maxed out. I may have posted a thread about it here.
I check the gauge at the beginning of an inspection and again when I am ready to leave. It might be 5 minutes....maybe 10 and almost never 15.
I have encountered tests with the furnace connected, the shut-off valve open and a 60 psi gauge maxed out. I may have posted a thread about it here.