Steam boiler Blown low voltage fuse Gas shut-off to home and locked by gas company Dirty boiler sight glass Boiler roll-out switch (circled) Clogged boiler heat exchanger Pigtail with gauge and pressuretrol attached (circled) Boiler pigtail gauge reading 53 psig Boiler pigtail gauge reading zero after pigtail cleaning Clog in boiler pipe Pigtail and gauge