Actuator for combined fire smoke damper

Discussion created by tarek.bojamhoormep on Mar 30, 2017

Dear Sir,
regarding to above mentioned subject, kindly be informed that we submitting our combined fire smoke dampers for approval in one of stations of metro project which is UL certified and approved from local civil defence as rated to 250 degree celisus at 2 hours but our client insisting to get the actuator with same rating of dampers which is not applicable with all manufactures.
so, kindly provide us with any clauses from NFPA or confirmation letter to show that it is not mandatory to provide this actuators with same rating of dampers and be informed that proposed actuator already working up to 77 degree celisus.
your quick response will be highly appreciated.