Assessments - 5, GPA: 3.8
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Continue holding down control knob. Repeat igniting operation until air is removed 4. Clean ODS/pilot (see Cleaning and Maintenance, page 22) or replace ODS/pilot assembly 5. Replace gas regulator 1. Press in control knob fully 2. After ODS/pilot lights, keep control knob pressed in 10 seconds 3. Fully open manual shut-off valve 4. Hand tighten until snug, then tighten 1/4 turn more 5. A) Contact local natural gas company B) Clean ODS/pilot (see Cleaning and Maintenance, page 22) or replace ODS/pilot assembly 6. Replace thermocouple 7. Replace control valve Continued 23 TROUBLESHOOTING Continued OBSERVED POSSIBLE PROBLEM CAUSE REMEDY Burner(s) does not 1. Burner orifice(s) is light after ODS/pilot clogged is lit 2. Burner orifice(s) diameter is too small 3. Inlet gas pressure is too low Delayed ignition of burner(s) Burner backfiring during combustion 1. Manifold pressure is too low 2. Burner orifice(s) is clogged 1. Burner orifice(s) is clogged or damaged 2. Burner damaged 3. Gas regulator defective Burner plaque(s) does 1. Plaque damaged not glow 2. Inlet gas pressure is too low 3. Control knob set between locked positions 1. Clean burner orifice(s) (see Cleaning and Maintenance, page 22) or replace burner orifice(s) 2. Replace burner orifice(s) 3. Contact local natural gas company 1. Contact local natural gas company 2. Clean burner orifice(s) (see Cleaning and Maintenance, page 22) or replace burner orifice(s) 1. Clean burner orifice(s) (see Cleaning and Maintenance, page 22) or replace burner orifice(s) 2. Replace burner 3. Replace gas regulator 1. Replace burner 2. Contact local natural gas company 3. Turn control knob until it locks at desired setting Slight smoke or odor 1. Residues from manu-1. Problem will stop after a during initial opera-facturing processes few hours of operation tion Heater produces a 1. Metal expanding while 1. This is common with clicking/ticking noise heating or contracting most heaters. If noise is just after burner is lit while cooling excessive, contact qualior shut off fied service person 24 TROUBLESHOOTING Continued TECHNICAL SERVICE WARNING If you smell gas • Shut off gas supply. • Do not try to light any appliance. • Do not touch any electrical switch; do not use any phone in your building. • Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions. • If you cannot reach your gas supplier, call the fire department. IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning supplies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles, etc., create fumes. These fumes may mix with combustion air and create odors. OBSERVED POSSIBLE PROBLEM CAUSE REMEDY Heater produces unwanted odors Heater shuts off in use (ODS operates) Gas odor even when control knob is in OFF position Gas odor during combustion 1. Heater burning vapors from paint, hair spray, glues, etc. See IMPORTANT statement above 2. Gas leak. See Warning statement at top of page 1. Not enough fresh air is available 2. Low line pressure 3. ODS/pilot is partially clogged 1. Gas leak. See Warning statement at top of page 2. Control valve defective 1. Foreign matter between control valve and burner 2. Gas leak. See Warning statement at top of page 1. Ventilate room. Stop using odor causing products while heater is running 2. Locate and correct all leaks (see Checking Gas Connections, page 15) 1. Open window and/or door for ventilation 2. Contact local natural gas company 3. Clean ODS/pilot (see Cleaning and Maintenance, page 22 1. Locate and correct all leaks (see Checking Gas Connections, page 15) 2. Replace control valve 1. Take apart gas tubing and remove foreign matter 2. Locate and correct all leaks (see Checking Gas Connections, page 15) You may have further questions about installation, operation, or troubleshooting. If so, contact DESA International’s Technical Service Department at 1-800-3235190. 25 SPECIFICATIONS SERVICE HINTS REPLACEMENT PARTS 26 CGN18R CGN30C BTU (Variable) 6,600/12,000/18,000 6,600/18,000/30,000 Type Gas Natural Only Natural Only Ignition Piezo Piezo Pressure Regulator Setting 6" W.C. 6" W.C. Inlet Gas Pressure (in. of water) Maximum 10.5" 10.5" Minimum 7" 7" Dimensions, Inches (H x W x D) Heater 23.5 x 18.5 x 8 23.5 x 25.9 x 8 Carton 25.8 x 21.3 x 10.1 5.8 x 28.7 x 10.1 Weight (pounds) Heater 22 30 Shipping 27 36 When gas pressure is too low • pilot will not stay lit • burner(s) will have delayed ignition • heater will not produce specified heat When gas quality is bad • pilot will not stay lit • burner(s) will produce flames and soot • heater will backfire when lit You may feel your gas pressure is too low or gas quality is bad. If so, contact your local natural gas supplier. Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty. Parts Under Warranty Contact authorized dealers of this product. If they can’t supply original repla...
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