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BLUE FLAME VENT-FREE NATURAL GAS HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
CGN20TB
CGN20TLB
CGN30TB
CGN30TLB
20,000 Btu/Hr Thermostat
and
30,000 Btu/Hr Thermostat
Model Heaters
WARNING: Improper installa-
WARNING: If the information in this manual is not
tion, adjustment, alteration, ser-
followed exactly, a fire or explosion may result caus-
vice, or maintenance can cause
ing property damage, personal injury, or loss of life.
injury or property damage. Re-
— Do not store or use gasoline
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BLUE FLAME NATURAL GAS HEATER 3. This heater shall not be installed in a SAFETY Due to high temperatures, the bedroom or bathroom. appliance should be located out INFORMATION 4. This heater needs fresh, outside air ven- of traffic and away from furniture tilation to run properly. This heater has and draperies. WARNINGS an Oxygen Depletion Sensing (ODS) safety shutoff system. The ODS shuts Do not place clothing or other IMPORTANT: Read this owner’s down the heater if not enough fresh air flammab
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OWNER’S MANUAL PRODUCT PRODUCT IDENTIFICATION FEATURES Ignitor Button Control Knob SAFETY DEVICE This heater has a pilot with an Oxygen Depletion Sensing (ODS) safety shutoff system. The ODS/pilot is a required feature for vent-free room heaters. The ODS/pilot shuts off the heater if there is not enough fresh air. PIEZO IGNITION SYSTEM Grill This heater has a piezo ignitor. This system Guard requires no matches, batteries, or other sources to light heater. Glass Panel THERMOSTATIC HEAT CONTROL T
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BLUE FLAME NATURAL GAS HEATER Confined and Unconfined Space PROVIDING ADEQUATE FRESH AIR FOR VENTILATION The National Fuel Gas Code ANS Z223.1 COMBUSTION AND defines a confined space as a space whose The following are excerpts from National VENTILATION volume is less than 50 cubic feet per 1,000 Fuel Gas Code. NFPA 54/ANS Z223.1, Sec- 3 Btu per hour (4.8 m per kw) of the aggre- tion 5.3, Air for Combustion and Ventilation. gate input rating of all appliances installed WARNING: This heater shall
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OWNER’S MANUAL FRESH AIR FOR COMBUSTION AND VENTILATION Continued DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Determining if You Have a Confined or Unconfined Space Use this worksheet to determine if you have a confined or unconfined space. Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between the rooms. 1. Determine the volume of the space (length x width x height). Length x Width x Height = ________________
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BLUE FLAME NATURAL GAS HEATER FRESH AIR FOR COMBUSTION AND 12" VENTILATION Continued VENTILATION AIR Ventilation Grills Into Adjoining Room, Ventilation Air From Inside Ventilation Option 2 Grills Or Building into Adjoining Remove Room, This fresh air would come from an adjoining Door into Option 1 Adjoining unconfined space. When ventilating to an Room, adjoining unconfined space, you must pro- Option 3 vide two permanent openings: one within 12" of the ceiling and one within 12" of the
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OWNER’S MANUAL LOCATING HEATER INSTALLATION CAUTION: If you install the This heater is designed to be mounted on a heater in a home garage NOTICE: This heater is intended wall. • heater pilot and burner must for use as supplemental heat. Use be at least 18 inches above this heater along with your pri- floor WARNING: Maintain the mini- mary heating system. Do not in- • locate heater where moving ve- mum clearances shown in Figure stall this heater as your primary hicle will not hit it 4. If you
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BLUE FLAME NATURAL GAS HEATER Attaching to wall stud: This method pro- INSTALLING HEATER TO INSTALLATION vides the strongest hold. Insert mounting WALL Continued screws through mounting bracket and into wall studs. Mounting Bracket THERMOSTAT SENSING Attaching to wall anchor: This method Locate mounting bracket in heater carton. BULB allows you to attach mounting bracket to Remove mounting bracket from heater carton. The thermostat sensing bulb has been hollow walls (wall areas between studs) or
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OWNER’S MANUAL 4. If installing bottom mounting screws INSTALLATION into hollow or solid wall, install wall Continued anchors. Follow steps 1 through 4 un- der Attaching To Wall Anchor Method. Attaching Mounting Bracket To If installing bottom mounting screw Wall into wall stud, drill holes at marked lo- Note: Wall anchors, mounting screws, and cations using 9/64" drill bit. Figure 9 - Folding Anchor spacers are in hardware package. The hard- 5. Replace heater onto mounting bracket. ware package
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BLUE FLAME NATURAL GAS HEATER Apply pipe joint sealant lightly to male is within reach for cleaning. Locate sedi- INSTALLATION threads. This will prevent excess sealant ment trap where trapped matter is not likely Continued from going into pipe. Excess sealant in pipe to freeze. A sediment trap traps moisture could result in clogged heater valves. and contaminants. This keeps them from CONNECTING TO GAS going into heater controls. If sediment trap SUPPLY is not installed or is installed wrong, h
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OWNER’S MANUAL 3. Check all joints from gas meter to equip- INSTALLATION OPERATING ment shutoff valve (see Figure 15). Ap- Continued ply mixture of liquid soap and water to HEATER gas joints. Bubbles forming show a leak. CHECKING GAS FOR YOUR SAFETY 4. Correct all leaks at once. CONNECTIONS READ BEFORE Pressure Testing Heater Gas LIGHTING WARNING: Test all gas pip- Connections ing and connections for leaks WARNING: If you do not fol- 1. Open equipment shutoff valve (see Fig- after installation
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OFF HI BLUE FLAME NATURAL GAS HEATER 8. Turn control knob counterclockwise THERMOSTAT OPERATING to desired heating level. The C-clockwise CONTROL OPERATION HEATER main burner should light. Set control The thermostatic control used on these knob to any heat level between HI LIGHTING models differs from standard thermo- and LO. stats. Standard thermostats simply turn INSTRUCTIONS on and off the burner. The thermostat CAUTION: Do not try to ad- 1. STOP! Read the safety information, used on this h
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OWNER’S MANUAL CLEANING BURNER INSPECTING WARNING: If yellow tipping PILOT AIR INLET HOLE occurs, your heater could pro- BURNER duce increased levels of carbon We recommend that you clean the unit ev- monoxide. If burner flame pattern ery 2,500 hours of operation or every three Check pilot flame pattern and burner flame shows yellow tipping, follow in- months. pattern often. structions at bottom of this page. We also recommend that you keep the burner PILOT FLAME PATTERN tube and pilot assembly
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BLUE FLAME NATURAL GAS HEATER TROUBLESHOOTING CAUTION: Never use a wire, WARNING: Turn off and un- needle, or similar object to clean plug heater and let cool before Note: For additional help, visit DESA ODS/pilot. This can damage ODS/ servicing. Only a qualified ser- International’s technical service web site pilot unit. vice person should service and at www.desatech.com. repair heater. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Wh
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OWNER’S MANUAL TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Burner does not light after ODS/pilot is lit 1. Burner orifice is clogged 1. Clean burner (see Cleaning and Mainte- nance, page 13) or replace burner orifice 2. Burner orifice diameter is too small 2. Replace burner orifice 3. Inlet gas pressure is too low 3. Contact local natural gas company Delayed ignition of burner 1. Manifold pressure is too low 1. Contact local natural gas company 2. Burner orifice is clogged 2
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BLUE FLAME NATURAL GAS HEATER TROUBLESHOOTING Continued 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 rem
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OWNER’S MANUAL SPECIFICATIONS REPLACEMENT PARTS CGN20TB/CGN20TLB CGN30TB/CGN30TLB 20,000 Btu/Hr Models 30,000 Btu/Hr Models Note: Use only original replacement parts. This will protect your warranty coverage Btu (Variable) 10,000/20,000 15,000/30,000 for parts replaced under warranty. Type Gas Natural Only Natural Only PARTS UNDER WARRANTY Ignition Piezo Piezo Contact authorized dealers of this product. If Pressure Regulator Setting 3" W.C. 3" W.C. they can’t supply original replacement part(s),
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BLUE FLAME NATURAL GAS HEATER ACCESSORIES Purchase these heater accessories from your local dealer. If they can not supply these accessories, either contact your nearest Parts Central (see page 19) or call DESA International’s Parts Department at 1-800- 972-7879 for referral information. You can also write to the address listed on the back page of this manual. FAN KITS - GA3100(A,B) AND GA3200T(A,B) For all models. Provides better heat distri- FLOOR MOUNTING STAND bution. Makes heater more effic
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OWNER’S MANUAL These Parts Centrals are privately owned businesses. They have agreed to support our PARTS CENTRALS customer’s needs by providing original replacement parts and accessories. Washer Equipment Co. Dayton Hardware Baltimore Electric 1715 Main Street P.O. Box 275 1348 Dixwell Avenue Kansas City, MO 64108-2195 North Dayton Station Hamden, CT 06514-0322 KS, MO, AR Dayton, OH 45404-0275 1-800-397-7553 816-842-3911 All States 203-248-7553 www.washerparts.com 937-258-3721 Parts Department
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BLUE FLAME NATURAL GAS HEATER ILLUSTRATED PARTS 21 BREAKDOWN 22 CGN20TB 20 15 CGN20TLB CGN30TB CGN30TLB 10 24 12 11 4 23 13 9 19 14 17 10 18 8 6 3 7 5 16 11-1 7 11-2 2 1 104331 20
