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      01-16-2013, 07:11 AM   #6
John320d
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Drives: BMW 320d E93
Join Date: Dec 2009
Location: Manchester UK

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I suggest you fully open the valves on the two rads which do not have TRVs fitted. Then open all the other rad valves fully, and balance each rad to have a 20c drop. do this two times. Next, adjust the TRVs to your personal preference. Let us know how you get on.