DtiCorp.com is Introducing the New Honeywell YP900B1002 Combustion Efficiency Panel Popular online HVAC retailer DtiCorp.com is introducing the brand new Honeywell YP900B1002 Combustion Efficiency Panel. Delphi Combustion Efficiency Panel is a packaged, pre-wired panel with integrated color touchscreen display, flame safeguard control, linkageless fuel/air ratio control, oxygen trim and VFD capability. Includes Hall-effect sensor which monitors VFD-driven blower and provides feedback to the control, the YP900A1004 also includes the MF020-1-LC3 Oxygen sensor with mounting fitting and electrical connector. System is set-up entirely via the touchscreen interface. in Public bookmarkswith combustionefficiencyhoneywellpanelyp900b1002