Desa KEROSENE HIGH PRESSURE PORTABLE FORCED AIR HEATERS Owner's Manual

Also see for B350D: Owner's manual Service manual Owner's manual

Contents

www.desatech.com110098-01F 118. Inspect nozzle for damage. If damaged orclogged, replace nozzle.9. Make sure plug is in place on burner head.10. Replace nozzle into burner head and tightenfirmly (175-200 inch-pounds).11. Attach burner head to combustion chamber.12. Install spark plug in burner head.13. Attach spark plug wire to spark plug.14. Attach fuel line to solenoid valve. Tighten firmly.15. Replace upper shell.PUMP PRESSURE ADJUSTMENTFOR HEATERS WITH FUEL FILTER/CANISTER EXTERNAL TO PUMP1. Remove pressure gauge plug from fuel pumpport marked “GAUGE.”2. Install accessory pressure gauge (part num-ber 110380-01) to fuel pump port marked“GAUGE” (see Figure 11).3. Start heater (see Operation, page 4). Allowmotor to reach full speed.4. Adjust pressure. Use small flat blade screw-driver to turn slotted screw at fuel pump pres-sure adjusting port. Turn screw clockwise toincrease pressure. Turn screw counterclockwiseto decrease pressure. See specifications in Fig-ure 11 for correct pressure for each model.5. Stop heater (see page 5).6. Remove pressure gauge. Replace pres-sure gauge plug in fuel pump port marked“GAUGE.”SERVICE PROCEDURESContinuedFigure 11 - Adjusting Pump PressurepsiPressureGaugeFuel Pump PortMarked “GAUGE”Fuel PumpPort Marked“PRESS ADJ”Model Pump Pressure350,000 Btu/Hr 100 PSI600,000 Btu/Hr 110 PSIPUMP PRESSURE ADJUSTMENTFOR HEATERS WITH FUEL FILTERINTERNAL TO PUMP1. Remove pressure gauge plug from fuel pumpport marked “GAUGE.”2. Install accessory pressure gauge (part number110380-01) to fuel pump port marked “GAUGE”(see Figure 12). Do not use bleeder valve portto check the pressure. The bleeder valve portcontains pressure higher than operating pressure.Setting pump pressure with gauge in the bleedervalve port results in wrong operating pressure.3. Start heater (see Operation, page 4). Allowmotor to reach full speed.4. Adjust pressure. Use small flat blade screw-driver to turn slotted screw at fuel pumpport at top right side of pump. Turn screwclockwise to increase pressure. Turn screwcounterclockwise to decrease pressure. Seespecifications in Figure 12 for correct pressurefor each model.5. Stop heater (see page 5).6. Remove pressure gauge. Replace pres-sure gauge plug in fuel pump port marked“GAUGE.”psiPressureGaugeFuel PumpPort Marked“GAUGE”PressureAdjustment PortFigure 12 - Adjusting Pump PressureModel Pump Pressure350,000 Btu/Hr 100 PSI600,000 Btu/Hr 110 PSI