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Posted by Joe on December 14, 2005 at 10:25:47:
Hi, I have a 4 year old residential boiler. It runs all year long. Just longer in cold months when heat is on. It has fresh water feed to it all the time when it needs it and inside pressure is 20 lbs. The maintenance book said that every month I should open the safety valve to let any mineral build up get past the 20 lb. regulated valve. But it does not tell me if I have to shut the boiler down to do this or what, it is not very detailed about this. Wont that hurt boiler if all of a sudden the inside pressure is now 80lbs. instead of 20 lbs. like it should be. Also do I have to drain old water out of boiler every so often for fresh water, or since there is a water hook up and the boiler heats the water for the rest of the house to not just the heat there is fresh water thru the whole unit? Is there any maintenece there should be done with the water in the boiler? Any and all comments would be great. Thanks.