Desa Vanguard VN2000BTD Owner's Operation And Installation Manual

Contents

15104402OWNER’S MANUALOBSERVED PROBLEMBurner does not light after ODS/pilot is litDelayed ignition of burnerBurner backfiring during combustionYellow flame during burner combustionSlight smoke or odor during initial operationHeater produces a whistling noise whenburner is litREMEDY1. Clean burner (see Cleaning and Mainte-nance, page 13) or replace burner orifice2. Replace burner orifice3. Contact local natural gas company1. Contact local natural gas company2. Clean burner (see Cleaning and Mainte-nance, page 13) or replace burner orifice1. Clean burner (see Cleaning and Mainte-nance, page 13) or replace burner orifice2. Replace burner3. Replace gas regulator1. Check burner for dirt and debris. Iffound, clean burner (see Cleaning andMaintenance, page 13)2. Replace gas regulator1. Problem will stop after a few hours ofoperation1. Turn control knob to LO position andlet warm up for a minute2. Operate burner until air is removed fromline. Have gas line checked by localnatural gas company3. Observe minimum installation clear-ances (see Figure 4, page 7)4. Clean burner (see Cleaning and Mainte-nance, page 13) or replace burner orificePOSSIBLE CAUSE1. Burner orifice is clogged2. Burner orifice diameter is too small3. Inlet gas pressure is too low1. Manifold pressure is too low2. Burner orifice is clogged1. Burner orifice is clogged or damaged2. Burner damaged3. Gas regulator defective1. Not enough air2. Gas regulator defective1. Residues from manufacturing processes1. Turning control knob to HI positionwhen burner is cold2. Air in gas line3. Air passageways on heater blocked4. Dirty or partially clogged burner orificeTROUBLESHOOTINGContinuedContinuedwww.desatech.com