Desa CFN2800BTB manual

BLUE FLAME VENT -FREE NA TURAL GAS HEA TER OWNER’S OPERA TION AND INST ALLA TION MANUAL Save this manual for future reference. WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury, or loss of life. — Do not store or use gasoline or other flammable vapors and [...]

2 101809 CONTENTS SECTION PAGE Safety Information ......................................................................... 2 Product Identification .................................................................... 4 Local Codes ................................................................................... 4 Unpacking ......................[...]

3 101809 SAFETY INFORMA TION WARNING ICON G 001 W ARNINGS Continued WARNING: Any change to this heater or its controls can be dangerous. 1. This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases. 2. If you smell gas • shut off gas supply • do not try to light[...]

4 101809 PRODUCT IDENTIFICA TION LOCAL CODES Install and use heater with care. Follow all local codes. In the absence of local codes, use the latest edition of National Fuel Gas Code ANSI Z223.1, also known as NFPA 54*. *Available from: American National Standards Institute, Inc. 1430 Broadway New York, NY 10018 National Fire Protection Association[...]

5 101809 AIR FOR COMBUSTION AND VENTILA TION WARNING ICON G 001 W ARNING This heater shall not be installed in a confined space unless provisions are provided for adequate combustion and ventilation air. Read the following instructions to insure proper fresh air for this and other fuel-burning appliances in your home. Today’s homes are built more[...]

6 101809 AIR FOR COMBUSTION AND VENTILA TION Continued DETERMINING 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[...]

7 101809 AIR FOR COMBUSTION AND VENTILA TION Continued Or Remove Door into Adjoining Room, Option 3 Ventilation Grills Into Adjoining Room, Option 2 12" 12" Ventilation Grills into Adjoining Room, Option 1 WARNING ICON G 001 W ARNING If the area in which the heater may be operated is smaller than that defined as an unconfined space, provi[...]

8 101809 AIR FOR COMBUSTION AND VENTILA TION Continued Figure 3 - Ventilation Air from Outdoors Outlet Air Ventilated Attic Outlet Air Inlet Air Inlet Air Ventilated Crawl Space To Crawl Space To Attic Ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or ducts. You must provide two permanent openings: one within 12&q[...]

9 101809 INST ALLING T O W ALL Continued CHECK GAS TYPE Use only natural gas. If your gas supply is not natural, do not install heater. Call dealer where you bought heater for proper type heater. INSTALLATION ITEMS Before installing heater, make sure you have the items listed below: • piping (check local codes) • sealant (resistant to propane/L[...]

10 101809 36" 3" FLOOR CEILING Minimum Minimum To Top Surface Of Carpeting, Tile Or Other Combustible Material 6" Minimum From Sides Of Heater Left Side Right Side Figure 5 - Attaching Thermostat Sensing Bulb Clamp Thermostat Sensing Bulb THERMOSTAT SENSING BULB The thermostat sensing bulb has been placed inside the heater for protec[...]

11 101809 INSTALLING HEATER TO WALL Mounting Bracket The mounting bracket is located on back panel of heater. It has been taped there for shipping. Remove mounting bracket from back panel. Mounting Bracket Figure 6 - Mounting Bracket Figure 7 - Removing Front Panel Of Heater Methods For Attaching Mounting Bracket To Wall Only use last hole on each [...]

12 101809 18 3/4" Min. 11" Min. 16" 18 3/4" Min. 7 1/4" Min. Adjoining Wall 16" Adjoining Wall Only Insert Mounting Screws Through Last Hole On Each End Only Insert Mounting Screws Through Last Hole On Each End Floor Floor Marking Screw Locations 1. Tape mounting bracket to wall where heater will be located. Make sure [...]

13 101809 4. For thin walls (1/2" or less), insert red key into wall anchor. Push red key to “pop” open anchor wings. IMPORTANT : Do not hammer key! For thick walls (over 1/2" thick) or solid walls, do not pop open wings. Figure 12 - Installing Bottom Mounting Screws Figure 10 - Popping Open Anchor Wings For Thin Walls 5. Place mounti[...]

14 101809 CONNECTING T O GAS SUPPL Y NOTICE A qualified service person must connect heater to gas supply. Follow all local codes. WARNING ICON G 001 W ARNING Never connect heater to private (non-utility) gas well. This gas is commonly known as wellhead gas. Typical Pipe Diameters VN2000BTB/CFN2000BTB 3/8" or greater VN2800BTB/CFN2800BTB 1/2&qu[...]

15 101809 IMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping and/or fittings. Pressure Regulator Tee Joint Reducer Bushing to 1/8" NPT 1/8" NPT Plug Tap Test Gauge Connection * Tee Joint Pipe Nipple Cap Heater Cabinet 1/2" NPT Pipe Nipple Figure 13 - Gas Connection * An A.G.A. design certified manual shut[...]

16 101809 ON POSITION OFF POSITION 4. Check all joints of gas supply piping system. Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak. 5. Correct all leaks at once. Test Pressures Equal To or Less Than 1/2 PSIG 1. Close manual shutoff valve (see Figure 14). 2. Pressurize supply piping system by either using compresse[...]

17 101809 PILOT LO OFF HI IGNITOR OPERA TING HEA TER A. This appliance has a pilot which must be lighted by hand. When lighting the pilot, follow these instructions exactly. B. BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor. WHAT TO DO[...]

18 101809 4. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety information at the top of page 17. If you don’t smell gas, go to the next step. 5. Turn control knob counterclockwise C-clockwise to the PILOT position. Press in control knob for five (5) seco[...]

19 101809 T O TURN OFF GAS TO APPLIANCE OPERA TING HEA TER Continued Shutting Off Heater 1. Turn control knob clockwise Clockwise to the OFF position. 2. Turn off all electric power to the appliance if service is to be performed. Shutting Off Burner Only (pilot stays lit) 1. Turn control knob clockwise Clockwise to the PILOT position. THERMOST A T [...]

20 101809 Figure 19 - Incorrect Pilot Flame Pattern INSPECTING BURNER Check pilot flame pattern and burner flame pattern often. PILOT FLAME PATTERN Figure 18 shows a correct pilot flame pattern. Figure 19 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. Whe[...]

21 101809 INSPECTING BURNER Continued BURNER FLAME PATTERN Figure 20 shows a correct burner flame pattern. Figure 21 shows an incorrect burner flame pattern. The incorrect burner flame pattern shows yellow tipping of the flame. It also shows the flame higher than 1/2 the glass panel height. NOTICE Do not mistake orange flames with yellow tipping. D[...]

22 101809 CLEANING AND MAINTENANCE ODS/PILOT AND BURNER • Use a vacuum cleaner, pressurized air, or small, soft bristled brush to clean. CABINET Air Passageways • Use a vacuum cleaner or pressurized air to clean. Exterior • Use a soft cloth dampened with a mild soap and water mixture. Wipe the cabinet to remove dust. WARNING ICON G 001 W ARNI[...]

23 101809 Continued REMEDY 1. Turn on gas supply or open manual shutoff valve 2. Turn control knob to PILOT position 3. Press in control knob while in PILOT position 4. Continue holding down control knob. Repeat igniting operation until air is removed 5. Clean ODS/pilot (see Cleaning and Mainte- nance , page 22) or replace ODS/pilot assembly 6. Rep[...]

24 101809 OBSERVED PROBLEM Burner does not light after ODS/pilot is lit Delayed ignition of burner Burner backfiring during combustion Yellow flame during burner combustion Slight smoke or odor during initial opera- tion Heater produces a whistling noise when burner is lit REMEDY 1. Clean burner (see Cleaning and Mainte- nance , page 22) or replace[...]

25 101809 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. WAR[...]

26 101809 TECHNICAL SER VICE You may have further questions about installation, operation, or troubleshooting. If so, contact DESA International’s Technical Service Department at 1-800-323-5190. SPECIFICA TIONS SERVICE HINTS When gas pressure is too low • pilot will not stay lit • burner will have delayed ignition • heater will not produce [...]

27 101809 SER VICE PUBLICA TIONS You can purchase service manual from the address listed on the back page of this manual. Send a check for $5.00 payable to DESA International. REPLACEMENT P ARTS Note: Use only original replacement parts. This will protect your warranty cover- age for parts replaced under warranty. Parts Under Warranty Contact autho[...]

28 101809 12-1 12-2 12 ODS/Pilot Assembly (Parts list on page 33) 1 2 3 4 5 6 7 8 9 10 10 11 12 13 14 15 16 17 19 20 21 22 23 24 25 26 27 28 30 31 32 18 31 30 29 VN2000BTB CFN2000BTB VN2800BTB CFN2800BTB[...]

29 101809 P ARTS LIST This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 27 of this manual. KEY PART NUMBER FOR NO. VN2000BTB CFN2000BTB VN2800BTB CFN2800BTB DESCRIPTION QTY. 1 098304-01 098304-01 098304-01 098304-01 Screw, #10 x 3/8" 2 2 098742-13 09874[...]

30 101809 FAN KITS - GA3100A, and GA3200TA For all models. Provides better heat distribu- tion. Makes heater more efficient. Complete installation and operating instructions included. Manually controlled - GA3100A. Includes ON/OFF switch. Thermostatically controlled - GA32000TA . Includes three settings: ON/OFF/AUTO. ACCESSORIES Purchase these heat[...]

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KEEP THIS WARRANTY Model Serial No. Date Purchased Always specify model and serial numbers when communicating with the factory. We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard written warranty. We make no other warranty, expressed or implied. W ARRANTY INFORMA TION 101809-0[...]