Grain Systems PNEG-1928 - Manual (Page 2)

Page 2 of 9 PNEG-1928
UV Sensor Retrofit Instruction Manual for Portable Dryers
Product Description
The UV flame detection kit was designed to replace the flame rod or probe that is used on Vision dryer
controls that utilize the HF-4624 fenwal flame control board.
(See Figure 2.) This flame controller uses a
flame rectification circuit that in certain situations may not work reliably with certain gases.
Figure 2 Fenwal Flame Control (HF-4624) (HF-4624 not included)
The GSI part # D03-1168 UV flame relay sensor (See Figure 3) is more reliable since it picks up the
UV light (in the 180-230 nm) that is naturally emitted in the flame when using LP, natural gas or propane
as its fuel. It replaces the flame rod or probe located in the burner and re-produces the expected flame
signal to the fenwal board.
Figure 3 UV Flame Sensor Relay (D03-1168)
This kit will include all the parts necessary to change the flame rectification sensing on a fan/heater used
on portable dryers over to UV style flame sense.