I just added a zone to my system. I had the foresight to plumb in an extra zone for an upcoming attic refinishing project. The problem began when the zone valve failed. The rubber stopper that is rotated by the thermostatically controlled motor had actually (for lack of the correct term) corroded in place. Not only that, but it seemed to have almost becomes slightly elliptical in shape, causing it to act like a stopper. Do these things happen with valves sitting in water without being actuated? Is it possible that zones that receive little use during the heating season can begin to fail? I have two zones that appear to be showing signs of reduced flow. Could sticking valves be the culprit?
By the way, the house is very toasty and it is only 20 degrees outside with wind. My propane guy must miss me.
By the way, the house is very toasty and it is only 20 degrees outside with wind. My propane guy must miss me.