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Desa CGN12 manual

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Table of contents for the manual

  • Page 1

    OWNER’S OPERA TION AND INST ALLA TION MANUAL ® VENT -FREE NA TURAL GAS HEA TER Model: CGN12 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, per- sonal injury, or loss of life. — Do not store or use gasoline or other flammable vapor[...]

  • Page 2

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

  • Page 3

    3 SAFETY INFORMA TION Continued ! WARNING ICON G 001 W ARNINGS Continued 1. Use only natural gas. Do not convert heater to use different fuel type. 2. 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 fro[...]

  • Page 4

    4 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 The 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, I[...]

  • Page 5

    5 INST ALLING T O W ALL NOTICE A qualified service person must install heater. Follow all local codes. 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 b[...]

  • Page 6

    6 ! WARNING ICON G 001 W ARNING Maintain minimum clearances shown in Figure 3. If you can, provide greater clearances from floor and joining wall. 2. Mark two mounting screw locations on wall (see Figure 3). INSTALLING HEATER TO WALL Marking Screw Locations 1. Determine where you will locate heater. Figure 3 - Mounting Screw Locations Mounting Scre[...]

  • Page 7

    7 Installing Two Mounting Screws Note: Wall anchors and mounting screws are in hardware package. The hardware package is provided with heater. Attaching to wall stud method For attaching mounting screw to wall stud 1. Drill hole at marked location using 9/64" drill bit. 2. Insert mounting screw into wall stud. 3. Tighten screw until 1/16"[...]

  • Page 8

    8 Placing Heater On Mounting Screws 1. Locate two keyhole slots on back panel of heater (see Figure 7). 2. Place large openings of slots over screwheads. Slide heater down until screws are in small portion of slots. Figure 9 - Installing Bottom Mounting Screw Removing Front Panel Of Heater 1. Remove two screws near bottom corners of front panel. 2.[...]

  • Page 9

    9 ! WARNING ICON G 001 W ARNING Never connect heater to private (non-utility) gas wells. This gas is commonly known as well-head gas. NOTICE A qualified service person must connect heater to gas supply. Follow all local codes. CONNECTING T O GAS SUPPL Y IMPORTANT: Check gas line pressure before connecting heater to gas line. Gas line pressure must [...]

  • Page 10

    10 ! WARNING ICON G 001 W ARNING Test all gas piping and connections for leaks after installing or servicing. Correct all leaks at once. Manual Shutoff Valve * IMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping and/or fittings. Figure 10 - Gas Connection * An A.G.A. design-certified manual shutoff valve with 1/8" N[...]

  • Page 11

    11 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 11). 2. Pressurize supply piping system by either using compressed air or opening main gas valve [...]

  • Page 12

    12 OPERA TING HEA TER FOR YOUR SAFETY READ BEFORE LIGHTING 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[...]

  • Page 13

    13 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 12. If you don’t smell gas, go to the next step. 5. Press in control knob. Note: You may be running this heater for the first time after hooking up to gas supply. If so[...]

  • Page 14

    14 TO SELECT HEATING LEVEL 1. Slightly press in control knob and turn counterclockwise to the LOW or HIGH positions. IMPORTANT: Release downward pressure while turning control knob. Control knob will lock at the desired position. C-clockwise Control Knobs Burners LOW OFF PILOT IGN HIGH OFF PILOT IGN OFF Figure 15 - Burner Patterns ! WARNING ICON G [...]

  • Page 15

    15 GRH/OV 009 GOOD PILOT GRH/OV 010 BAD PILOT Shutting Off Heater 1. Turn control knob clockwise to the OFF position. Shutting Off Burner Only (pilot stays lit) 1. Turn control knob clockwise to the PILOT position. MANUAL LIGHTING PROCEDURE 1. Remove front panel (see Figure 8, page 8). 2. Follow steps 1 through 6 under LIGHTING INSTRUCTIONS, pages [...]

  • Page 16

    16 BURNER FLAME PATTERN Figure 18 shows a correct burner flame pattern. Figure 19 shows an incorrect burner flame pattern. Figure 18 - Correct Burner Flame Pattern Figure 19 - Incorrect Burner Flame Pattern If burner flame pattern is incorrect, as shown in Figure 19 • turn heater off (see TO TURN OFF GAS TO APPLIANCE, page 15) • see TROUBLESHOO[...]

  • Page 17

    17 CLEANING AND MAINTENANCE ODS/PILOT AND BURNER ORIFICE • 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. OBSERVED PROBLEM When co[...]

  • Page 18

    18 REMEDY 1. Turn on gas supply or open manual shutoff valve 2. Press in control knob while turning to PILOT/ IGN position 3. Continue holding down control knob. Repeat ig- niting operation until air is removed 4. Clean ODS/pilot (see CLEANING AND MAINTENANCE, page 17) or replace ODS/pilot assembly 5. Replace gas regulator 1. Press in control knob [...]

  • Page 19

    19 OBSERVED PROBLEM Burner(s) does not light after ODS/pilot is lit Delayed ignition of burner(s) Burner backfiring during combustion Burner plaque(s) does not glow Slight smoke or odor during initial opera- tion Heater produces a clicking/ticking noise just after burner is lit or shut off REMEDY 1. Clean burner orifice(s) (see CLEANING AND MAINTEN[...]

  • Page 20

    20 POSSIBLE CAUSE 1. Heater burning vapors from paint, hair spray, glues, etc. 2. Gas leak. See Warn- ing 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 Warn- ing statement at top of page 2. Control valve defective 1. Foreign matter between control valve and burn[...]

  • Page 21

    21 SPECIFICA TIONS B.T.U. (Variable) 6,000/12,000 Type Gas Natural Only Ignition Piezo Pressure Regulator Setting 3" W.C. Inlet Gas Pressure (inches of water) Maximum 10.5" Minimum 4" Dimensions, Inches (H x W x D) Heater 20 1/2 x 13 1/2 x 5 Carton 25 x 16 11/16 x 7 1/2 Weight (pounds) Heater 14 Shipping 17 Note: Use only original re[...]

  • Page 22

    22 These Parts Centrals are privately owned businesses. They have agreed to support our customer’s needs by providing original replacement parts and accessories. P ARTS CENTRALS Albany Ladder 1586 Central Avenue Albany, NY 12205 (518) 869-5335 Parts Department 1-800-354-7368 Cans Unlimited, Inc. P.O. Box 645 Taylor, SC 29687 (803) 879-3009 U.S. 1[...]

  • Page 23

    23 KEY PART NO. NUMBER DESCRIPTION QTY. 13 099391-02 Tubing - Regulator to valve 1 14 099385-01 Control Valve 1 15 099057-01 Pressure Tap Fitting 1 16 098276-01 1/8 Pipe Plug 1 17 099468-02 Cabinet Assembly 1 18 099415-01 Gas Regulator 1 19 098303-02 Screw, #6 x 5/16" 2 20 098508-01 Valve Retainer Nut 1 21 099393-01 Control Knob 1 22 M11084-26[...]

  • Page 24

    LIMITED WARRANTY COMFORT GLOW VENT-FREE RESIDENTIAL GAS HEATERS DESA International warrants this product to be free from defects in materials and components for one (1) year from the date of first purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions. To make a claim [...]