Instruction/ maintenance manual of the product CGB3924NRA Desa
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Save this manual for future reference. WARNING: Improper installation, ad- justment, alteration, service, or mainte- nance can cause injury or property dam- age. Refer to this manual for correct installation and operational procedures. For assistance or additional informa- tion consult a qualified installer, ser- vice agency, or the gas supplier.
2 105677 UNVENTED NA TURAL GAS LOG HEA TER SAFETY INFORMA TION Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning re- semble the flu, with headaches, dizziness, or nausea. If you have these signs, the heater may not be working properly.
3 105677 OWNER’S MANUAL AUTO MAN OFF STATUS ON LO HI TEMP PRODUCT IDENTIFICA TION Figure 1 - Yellow Flame Vent-Free Gas Log Heater Shown (Logs May Vary by Model) OPERATION This heater is clean burning. It requires no outside venting. There is no heat loss out a vent or up a chimney.
4 105677 UNVENTED NA TURAL GAS LOG HEA TER AIR FOR COMBUSTION AND VENTILA TION Today’s homes are built more energy effi- cient than ever. New materials, increased insulation, and new construction methods help reduce heat loss in homes. Home owners weather strip and caulk around windows and doors to keep the cold air out and the warm air in.
5 105677 OWNER’S MANUAL AIR FOR COMBUSTION AND VENTILA TION Continued DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Determining if You Have a Confined or Unconfined Space Use this work sheet to determine if you have a confined or unconfined space.
6 105677 UNVENTED NA TURAL GAS LOG HEA TER AIR FOR COMBUSTION AND VENTILA TION Continued VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space.
7 105677 OWNER’S MANUAL INST ALLA TION WARNING: A qualified ser- vice person must install heater. Follow all local codes. WARNING: Before installing in a solid fuel burning fireplace, the chimney flue and firebox must be cleaned of soot, creosote, ashes and loose paint by a quali- fied chimney cleaner.
8 105677 UNVENTED NA TURAL GAS LOG HEA TER INST ALLA TION Continued Heat Resistant Material (A) Minimum Noncombustible Material Clearances If Not Using Mantel Note: If using a mantel, go to If Using Mantel . If not using a mantel, follow the information below.
9 105677 OWNER’S MANUAL INST ALLA TION Continued Figure 6 - Minimum Mantel Clearances Without Using Hood MANTEL CLEARANCES In addition to meeting noncombustible mate- rial clearances, you must also meet required clearances between fireplace opening and mantel shelf.
10 105677 UNVENTED NA TURAL GAS LOG HEA TER INST ALLA TION Continued INSTALLING HEATER BASE ASSEMBLY IMPORTANT: Make sure the heater burn- ers are level. If heater is not level, heater will not work properly. WARNING: If installing in a sunken fireplace, special care is needed.
11 105677 OWNER’S MANUAL CAUTION: Avoid damage to regulator. Hold gas regulator with wrench when connecting it to gas piping and/or fittings. INST ALLA TION Continued Continued CONNECTING TO GAS SUPPLY WARNING: A qualified service person must connect heater to gas supply.
12 105677 UNVENTED NA TURAL GAS LOG HEA TER INST ALLA TION Continued Figure 14 - Manual Shutoff Valve ON POSITION OFF POSITION Open Manual Shutoff Valve Figure 15 - Checking Gas Joints Gas Meter Manual Shutoff Valve Thermostat Gas Valve or Control Valve Location Closed WARNING: Never use an open flame to check for a leak.
13 105677 OWNER’S MANUAL AUTO OFF ON 3 AUTO OFF ON INST ALLA TION Continued AUTO OFF O N WARNING: Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this heater may result in property damage or personal injury.
14 105677 UNVENTED NA TURAL GAS LOG HEA TER INSTALLING LOGS ON MODELS CGB3924PRA AND CGB3930PRA WARNING: Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this heater may result in property damage or personal injury.
15 105677 OWNER’S MANUAL 1. STOP! Read the safety inf ormation in column 1. 2. Make sur e manual shutoff valve is fully open. 3. Set selector switch in the OFF position. WARNING: If you do not fol- low these instructions exactly, a fire or explosion may result caus- ing property damage, personal injury or loss of life.
16 105677 UNVENTED NA TURAL GAS LOG HEA TER TO TURN OFF GAS TO APPLIANCE 1. Follow steps 1 thr ough 6 under Light- ing Instructions , page 15. 2. Depress contr ol knob and light pilot with match. 3. Keep contr ol knob pr essed in for 30 seconds after lighting pilot.
17 105677 OWNER’S MANUAL OPERA TING HEA TER Continued TEMP ST ATUS HI LO MAN ON AUTO OFF Increases Room Temperature Decreases Room Temperature Turns Burners On and Off Shows Current Operation Mode S.
18 105677 UNVENTED NA TURAL GAS LOG HEA TER CLEANING AND MAINTENANCE WARNING: Turn off heater and let cool before cleaning. CAUTION: You must keep control areas, burner, and circu- lating air passageways of heater clean. Inspect these areas of heater before each use.
19 105677 OWNER’S MANUAL Continued TROUBLESHOOTING WARNING: Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater. CAUTION: Never use a wire, needle, or similar object to clean ODS/pilot. This can damage ODS/ pilot unit.
20 105677 UNVENTED NA TURAL GAS LOG HEA TER OBSERVED PROBLEM Burner does light after ODS/pilot is lit Delayed ignition burner Burner backfiring during combustion Slight smoke or odor during initial op.
21 105677 OWNER’S MANUAL 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.
22 105677 UNVENTED NA TURAL GAS LOG HEA TER ILLUSTRA TED PA R T S BREAKDOWN CGD3924NRA 7 16 16 17 25 16 3 2 1 4 11 21 10 9 12 15 8 19 18 20 6 14 5 13 27 26 26 22 23 24 O F F P I L O T O N H I L O O F .
23 105677 OWNER’S MANUAL This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 26 of this manual.
24 105677 UNVENTED NA TURAL GAS LOG HEA TER ILLUSTRA TED PAR TS BREAKDOWN CGB3924NRA CGB3930NRA 28 16 16 17 25 16 5 4 1 2 3 11 21 10 9 12 15 8 19 18 20 7 14 6 13 27 26 26 23 24 O F F P I L O T O N H I.
25 105677 OWNER’S MANUAL PAR TS LIST CGB3924NRA CGB3930NRA KEY CGB3924NRA CGB3930NRA NO. PART NUMBER PART NUMBER DESCRIPTION QTY. 1 104897-01 104897-02 Middle Log (#1) 1 2 104898-01 104898-02 Back L.
26 105677 UNVENTED NA TURAL GAS LOG HEA TER Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty.
27 105677 OWNER’S MANUAL SPECIFICA TIONS Btu (Variable) 20,000/39,000 Type Gas Natural Gas Only Ignition Piezo Manifold Pressure 3.5" W.C. Inlet Gas Pressure (in.
LIMITED WARRANTY COMFORT GLOW VENT-FREE NATURAL GAS LOG HEATERS DESA International warrants this product to be free from defects in materials and components for two (2) years from the date of first purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions.
An important point after buying a device Desa CGB3924NRA (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Desa CGB3924NRA yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Desa CGB3924NRA - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Desa CGB3924NRA you will learn all the available features of the product, as well as information on its operation. The information that you get Desa CGB3924NRA will certainly help you make a decision on the purchase.
If you already are a holder of Desa CGB3924NRA, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Desa CGB3924NRA.
However, one of the most important roles played by the user manual is to help in solving problems with Desa CGB3924NRA. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Desa CGB3924NRA along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
