Refrigeration, air-conditioning and cooling technology - 2007.pdf
Refrigeration, air-conditioning and cooling technology - 2007.pdf
Refrigeration, air-conditioning and cooling technology - 2007.pdf
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PLH_KKK_32_85.QXP 25.05.2007 10:11 Uhr Seite 73EXAMPLES FOR THE PUMP SELECTION IN THE COLD WATER CIRCUITThe selected Wilo-CronoLine-IL-E 100/8-33BF R1 requires a minimum circulation of 20 m 3 /h,which is to be ensured with overflow sections.If the opening positions of the load controllersare set above 90% to admixing, differentialpressure valves are opened by electromotors toprotect the pump.Cavitation can be ruled out since this is a closedcircuit. For protection, the vaporiser circuit shouldhave its own safety valve <strong>and</strong> be equipped withits own diaphragm extension vessel for a volumeexpansion of 5 to 7 %.Wilo Planning Guide - <strong>Refrigeration</strong>, <strong>air</strong>-<strong>conditioning</strong> <strong>and</strong> <strong>cooling</strong> <strong>technology</strong> 02/2007 73
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