need a manual for this DGAT090BDD UNIT I NEED TO CHANGE ORFIS,S FOR PROPANE GAS AND I DONT HAVE A MANUAL WOULD BE NICE TO HAVE ONE IF SOME ONE COULD SCANE ONE AND SEND IT TO ME thanks max in michigan

Not sure the manual would do you good. An orifice change is a kit from Evcon that includes stickers to be applied on the furnace to warn later servicepeople of the change to comply with warranty requirements. Call the local EVCON supplier who sells one of the York products. York also makes Fraser-Johnson, Luxaire, Moncrief, Winchester, Coleman-Evcon, AirPro.

www.heatpro.us energy businessmen's knowledge

Yes, you really have to find out the MAKE and MODEL to get good answers. There IS more than one machine made.