No. System Cause Correction
Cannot obtain rated input on Oil pressure too low Increase oil pressure
oil firing (pres. atom.) (con’t) Flow valve set too low (should be closed at high fire) Adjust oil control valve
16 Cannot obtain rated input on Oil nozzles plugged Clean nozzle
oil firing (air atomized) Air pressure too low Replace nozzle
Oil pressure too low Increase oil pressure
Flow valve set too low Adjust oil control valve
17 Cannot obtain NOx levels on FGR valve not full open Adjust FGR valve to full open
gas FGR valve full of condensate Clean duct and add drains
FGR duct not directed to flue stream Add angle cut in center of stack
FGR line too small Check sizing, use fittings with less drop
Operating on propane, not natural gas Resize FGR for propane operation
Shutoff valve is not full open Check FGR shutoff valve position
Page 44 TroubleshootingJB Manual
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