"JKevorkian" wrote in message
However, one thing concerns me:
The pressure gauge on the boiler reads around 4-7 lbs when it's really
humming since we've had this cold spell, and I think the cutoff switch
isn't
adjusted correctly. The boiler never exceeded 2 lbs. back in the days
before
things started wearing out on the unit.
Can anyone enlighten me as to the proper adjustment procedure for the
steam
pressure cutoff?

Most boilers operate in the range you have it, or a little lower. Maximum
is usually 10 pounds, the safety low off is usually set at 15 pounds
pressure. Higher pressure means more heat is being carries to the
radiators. If 2 lbs. worked, set it back to that range.

I don't know the specifics of your boiler. Some have a high fire and low
fire range. That means the unit starts out on high fire, reaches a set
pressure, then goes down to low fire and stays there until a drop send it
back to the high fire position. You may or may not have that.

One caution here. The overpressure you had may have been a PITA, but did
not do any damage to the boiler. However, letting in a lot of cold water
can cause problems, such as cracking cast iron from stress. Then you'd have
a very expensive mess on your hands. Never put cold water into a hot
boiler.