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Hot water heated by boiler and piped to "fin-tube" baseboard units mounted along walls. The fins increase the surface area of heat dissipation making the unit more efficient.
Scale build up is usually not a problem in hot water boilers. Although make up water contains dissolved minerals, system leaks discharge water with an equal amount of dissolved minerals. Since as many minerals are leaving the boiler system as enter it; minerals do not have the opportunity to accumulate in the boiler water. Source: www.cbs.state.or.us/bcd/programs/boiler/boilerbasics.html Bleeding / Purging air from a system. Turn off return valve Open drain valve with hose attached Put hose in a bucket and let it drain until there are no more bubbles Components: air_bleed_valve.jpg purge-and-balance-valve.jpg Put the "balancing" screw slot in like with the pipe run for open and turn 90° to close. Close to purge. Adjust somewhere between open and closed to balance heat in each zone in a multi-zone system.Links: Bleeding a Hot Water Boiler - YouTube Air Conditioning |