Posted by Harold Kestenholz - Hydronic Network on March 09, 2001 at 13:44:33:
In Reply to: harmonics in hydro-air system posted by Dave on March 08, 2001 at 15:14:33:
Congratulations on moving into your new 10,000 square-foot home. I know your new house is that large because a well-insulated modern home has a typical approximate loss of 25 btuh per square foot. Now that your circulator has been increased to handle that amount of heat tranfer in gallons per minute, there is less of a noise problem. By lowering the temperature of the water required to heat the coils, you reduce the probability of steam being produced from inadequate flow, as the temperature across the boiler is reduced. To check the effectiveness of the present installation, take a temperature reading of the water leaving the boiler and returning to the boiler. If the temperature difference is 40 degrees or less, it is operating within limits. If you are warm, the system is working.
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