I create two equest model , one is simple AHU system and the other is AHU system and OA from PAU (Primary Air Unit),the outside air pre-cooling by pass through PAU and then mix with RA finally cooling down by AHU.i think the AHU cooling CAPACITY is different,but the AHU cooling CAPACITY in SV-A is the same between two model ,and AHU cooling CAPACITY in SS-A is reduce,i was so confuse why cooling CAPACITY in SV-A does not change??What is the different about SV-A between SS-A report in EQUEST ?? Thank you for the reply.