Hello, I am a little perplexed by the Online Form LPDs for exterior lighting for which the ASHRAE allowable LPD case becomes smaller according to the lighting zone (LZ1,LZ2 and LZ3). Although this is completely logical , the credit says to use (ASHRAE 90.1-2007 with errata but WITHOUT ADDENDA) for exterior lighting. ASHRAE table 9.4.5 Lighting Power Densities for Builing Exteriors does not refer to different LPDs for different lighting zones. If I understand correctly, the LPD reductions are part of a later ADDENDA but in principal we can overlook the addenda. Am I missing something?
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