Neal Lewis Posted April 5, 2009 Report Share Posted April 5, 2009 A hot water boiler is used for a combination of domestic hot water, baseboard and radiant heating. The boiler temperature was running at 220 F. How much higher than the normal 180F limit is acceptable? BTW the whole installation was a clusterF. Radiant tubing stapped every 3 feet, sagging with no metal plates or insulation at the floor joists. No mixing valves, 220 F degree water in tubing under hardwood floors, etc. Quote Link to comment Share on other sites More sharing options...
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