Home / Shop / Burners, Parts, and Accessories / Power Flame Type C / C4/C5 / Honeywell, ST7800A-1039 30 Sec Purge Timer, PFI 407710 Honeywell, ST7800A-1039 30 Sec Purge Timer, PFI 407710 Category: C4/C5 Description Description Honeywell, ST7800A-1039 30 Sec Purge Timer PFI Part number 407710 Related products PF, C4/5 Pilot Mounting Plate Assembly PC, PFI C24130 Honeywell, Q7800C-1001 Single Fuel Control, PFI 939142 PF, Black PVC Wide Flexible Trim, PFI 910490 PF, C4/5/6 Pedestal Plate, PFI C10200