Instruction/ maintenance manual of the product CGN12 Desa
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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.
2 CONTENTS SECTION PAGE Safety Information ......................................................................... 2 Product Identification .................................................................... 4 Local Codes ..........................
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 n.
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.
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.
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.
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.
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.
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.
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.
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).
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.
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.
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.
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).
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 P.
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.
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.
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.
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.
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.
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.
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 As.
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.
An important point after buying a device Desa CGN12 (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 CGN12 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 CGN12 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Desa CGN12 you will learn all the available features of the product, as well as information on its operation. The information that you get Desa CGN12 will certainly help you make a decision on the purchase.
If you already are a holder of Desa CGN12, 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 CGN12.
However, one of the most important roles played by the user manual is to help in solving problems with Desa CGN12. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Desa CGN12 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
