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Posted by HeatPro on August 31, 2004 at 15:26:11:
In Reply to: Replacing a hydronic boiler posted by Trevor on August 31, 2004 at 12:44:50:
As the system never used a circulator, there is no need to worry about how much the circulator in the Luna can handle. The circulator only has to move the water through the boiler; the system will move the water by gravity as it has always done before. It is a fairly simple job of attaching the piping; so the friend should be able to handle it.
Be aware though that it will take an hour for the boiler just to heat up the pipes somewhat as there is a ton of water and two tons of pipes and radiators; but that's the way it always worked. Don't use a setback thermostat as it may never get back up to temp after a setback in cold weather. Just let a standard thermostat do its thing at one temperature setting.