Desa CGN12A manual

OWNER’S OPERA TION AND INST ALLA TION MANUAL VENT -FREE NA TURAL GAS HEA TER Model: CGN12A 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 a[...]

2 100847 CONTENTS SECTION PAGE Safety Information ......................................................................... 2 Product Identification .................................................................... 4 Local Codes ................................................................................... 4 Unpacking ......................[...]

3 100847 SAFETY INFORMA TION Continued WARNING ICON G 001 W ARNINGS Continued WARNING: Any change to this heater or its controls can be dangerous. 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[...]

4 100847 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 Associa[...]

5 100847 FRESH AIR FOR COMBUSTION AND VENTILA TION WARNING ICON G 001 W ARNING This heater must have fresh air for proper operation. If not, poor fuel combustion could result. 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 energy efficient than ever.[...]

6 100847 FRESH AIR FOR COMBUSTION AND VENTILA TION Continued WARNING ICON G 001 W ARNING You must provide additional ventilation air in a confined space. 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 th[...]

7 100847 FRESH AIR FOR COMBUSTION AND VENTILA TION Continued VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining unconfined space, you must provide two permanent openings: one within 12" of the ceiling and one within 12" of the floor on the wal[...]

8 100847 FRESH AIR FOR COMBUSTION AND VENTILA TION Continued VENTILATION AIR (Continued) Ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or ducts. You must provide two perma- nent openings: one within 12" of the ceiling and one within 12" of the floor. Connect these items directly to the outdoors or space[...]

9 100847 INST ALLING T O W ALL Continued NOTICE A qualified service person must install heater. Follow all local codes. 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 l[...]

10 100847 2. Mark two mounting screw locations on wall (see Figure 5). INSTALLING HEATER TO WALL Marking Screw Locations 1. Determine where you will locate heater. Figure 5 - Mounting Screw Locations Mounting Screw Locations 10 7/8" Minimum To Maintain 6" Clearance From Wall 7 3/4" 20 1/4" Minimum To Maintain 3" Clearance F[...]

11 100847 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/[...]

12 100847 Placing Heater On Mounting Screws 1. Locate two keyhole slots on back panel of heater (see Figure 9). 2. Place large openings of slots over screwheads. Slide heater down until screws are in small portion of slots. Figure 11 - Installing Bottom Mounting Screw Removing Front Panel Of Heater 1. Remove two screws near bottom corners of front [...]

13 100847 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[...]

14 100847 Manual Shutoff Valve * IMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping and/or fittings. Figure 12 - Gas Connection * An A.G.A. design-certified manual shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional A.G.A. design-certified manual shutoff valv[...]

15 100847 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 13). 2. Pressurize supply piping system by either using compressed air or opening main gas[...]

16 100847 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 floo[...]

17 100847 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 16. If you don’t smell gas, go to the next step. 5. Press in control knob, and turn counterclockwise C-clockwise to pilot position. Keep control knob pressed for[...]

18 100847 TO SELECT HEA TING LEVEL 1. Slightly press in control knob and turn counterclockwise C-clockwise to the LOW or HIGH positions. IMPORTANT: Release downward pressure while turning control knob. Control knob will lock at the desired position. Control Knobs Burners LOW OFF PILOT HIGH OFF PILOT OFF Figure 17 - Burner Patterns WARNING ICON G 00[...]

19 100847 GRH/OV 009 GOOD PILOT GRH/OV 008 BAD PILOT/LP Shutting Off Heater 1. Turn control knob clockwise 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 10, page 12). 2. Follow steps 1 through 5 under Lightin[...]

20 100847 BURNER FLAME PATTERN Figure 20 shows a correct burner flame pattern. Figure 21 shows an incorrect burner flame pattern. Figure 20 - Correct Burner Flame Pattern Figure 21 - Incorrect Burner Flame Pattern If burner flame pattern is incorrect, as shown in Figure 21 • turn heater off (see To Turn Off Gas to Appliance , page 19) • see Tro[...]

21 100847 CLEANING AND MAINTENANCE WARNING ICON G 001 W ARNING Turn off heater and let cool before cleaning. WARNING ICON G 001 CAUTION You must keep control areas, burner, and circulating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a qualified service person. Heater may need more [...]

22 100847 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 21) or replace ODS/pilot assembly 6. Replace gas r[...]

23 100847 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 [...]

24 100847 TROUBLE- SHOOTING Continued WARNING ICON G 001 W ARNING 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 canno[...]

25 100847 SPECIFICA TIONS BTU (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 When gas pressure is t[...]

26 100847 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 SER VICE PUBLICA TIONS You can purchase a service manual from the address listed on the back page of this manual. Send a check for $5.00 payable to DESA Internatio[...]

27 100847 23 GRH VP11A GRH VP11A 21 20 19 18 17 14 15 16 13 10 12 9 9 11 22 7 8 6 6 5 4 3 2 1 A B 23 24 25 GRH VP11A GRH VP11A GRHpv013.U 25 KEY PART NO. NUMBER DESCRIPTION QTY. 15 099057-01 Pressure Tap Fitting 1 16 098276-01 1/8 Pipe Plug 1 17 099468-05 Cabinet Assembly 1 18 099415-01 Gas Regulator 1 19 098303-02 Screw, #6 x 5/16" 2 20 09850[...]

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 [...]