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Desa CGN18B manual

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Table of contents for the manual

  • Page 1

    Save this manual for future reference. BLUE-FLAME VENT -FREE NA TURAL GAS HEA TER OWNER’S OPERA TION AND INST ALLA TION MANUAL Model: RN30B and CGN18B 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 oth[...]

  • Page 2

    2 100096 CONTENTS SECTION PAGE Safety Information ......................................................................... 2 Product Identification .................................................................... 4 Local Codes ................................................................................... 4 Unpacking ......................[...]

  • Page 3

    3 100096 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[...]

  • Page 4

    4 100096 PRODUCT IDENTIFICA TION Figure 1 - Vent-Free Natural Gas Heater Ignitor Button Control Knob Heater Cabinet Front Panel Heat Shield (RN30B) or Glass Panel (CGN18B) Grill Guard 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, als[...]

  • Page 5

    5 100096 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.[...]

  • Page 6

    6 100096 FRESH AIR FOR COMBUSTION AND VENTILA TION Continued WARNING ICON G001 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 the[...]

  • Page 7

    7 100096 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[...]

  • Page 8

    8 100096 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[...]

  • Page 9

    9 100096 INST ALLING T O W ALL 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 gas, do not install heater. Call dealer where you bought heater for proper type heater. INSTALLATION ITEMS Before installing the heater, make sure you have the items lis[...]

  • Page 10

    10 100096 WARNING ICON G 001 CAUTION If you install the heater in a home garage • heater pilot and burner must be at least 18 inches above floor • locate heater where moving vehicle will not hit it INST ALLING T O W ALL Continued For convenience and efficiency, install heater • where there is easy access for operation, inspection, and service[...]

  • Page 11

    11 100096 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. Figure 5 - Mounting Bracket Location Mounting Bracket GRH/OV 003B FRONT PANEL REMOVAL G H Figure 6 - Removing Front Panel Of Heater Removing Front Panel Of Heate[...]

  • Page 12

    12 100096 Marking Screw Locations 1. Tape mounting bracket to wall where heater will be located. Make sure mount- ing bracket is level. Attaching Mounting Bracket To Wall Note: Wall anchors, mounting screws, and spacers are in hardware package. The hardware package is provided with heater. Attaching to wall stud method For attaching mounting bracke[...]

  • Page 13

    13 100096 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 11 - Installing Bottom Mounting Screws Figure 9 - Popping Open Anchor Wings For Thin Walls 5. Place mounting[...]

  • Page 14

    14 100096 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 wells. This gas is commonly known as well-head gas. IMPORTANT: Check gas line pressure before connecting heater to gas line. Gas line pressure[...]

  • Page 15

    15 100096 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 * Sediment Trap Tee Joint Pipe Nipple Cap Heater Cabinet 1/2" NPT Pipe Nipple Figure 12 - Gas Connection Note: Burner bracket not s[...]

  • Page 16

    16 100096 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[...]

  • Page 17

    17 100096 OFF HIGH PILOT LOW IGNITOR 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 [...]

  • Page 18

    18 100096 7. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Note: If pilot goes out, repeat steps 3 through 7. 8. Turn control knob counterclockwise C-clockwise to the LOW position. The main burner should light. Set control knob to any heat level between HIGH and LOW. To turn control knob f[...]

  • Page 19

    19 100096 T O TURN OFF GAS T O APPLIANCE Figure 18 - Incorrect Pilot Flame Pattern GRH/OV 010 BAD PILOT Pilot Burner Thermocouple INSPECTING BURNER Check pilot flame pattern and burner flame pattern often. PILOT FLAME PATTERN Figure 17 shows a correct pilot flame pattern. Figure 18 shows an incorrect pilot flame pattern. The incorrect pilot flame i[...]

  • Page 20

    20 100096 1/2 HEAT SHIELD OR GLASS HEIGHT AT HIGH POSITION INCORRECT FLAME PATTERN AT HIGH POSITION If pilot flame pattern is incorrect, as shown in Figure 18 • turn heater off (see To Turn Off Gas to Appliance , page 19) • see Troubleshooting , pages 21 through 24 BURNER FLAME PATTERN Figure 19 shows a correct burner flame pattern. Figure 20 s[...]

  • Page 21

    21 100096 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 [...]

  • Page 22

    22 100096 TROUBLE- SHOOTING Continued OBSERVED PROBLEM When ignitor button is pressed, there is spark at ODS/pilot but no ignition ODS/pilot lights but flame goes out when control knob is released Burner does not light after ODS/pilot is lit POSSIBLE CAUSE 1. Gas supply turned off or manual shutoff valve closed 2. Control knob not in PILOT position[...]

  • Page 23

    23 100096 TROUBLE- SHOOTING Continued OBSERVED PROBLEM Burner does not light after ODS/pilot is lit (continued from page 22) 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 POSSIBLE CAUSE 2. Burne[...]

  • Page 24

    24 100096 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 cannot reach your gas supplier, c[...]

  • Page 25

    25 100096 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 When gas pressure is too low • pilot will not stay lit • burner will have delayed ignition • heater will not produce specified hea[...]

  • Page 26

    26 100096 REPLACEMENT P ARTS Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty. Parts Under Warranty Contact authorized dealers of this product. If they can’t supply original replacement part(s), either contact your nearest Parts Central (see below) or call DESA International’s[...]

  • Page 27

    27 100096 ACCESSORIES Purchase these heater accessories from your local dealer. If they can not supply these accessories, either contact your nearest Parts Central (see page 26) or call DESA International’s Parts Department at 1-800-972-7879 for information. You can also write to the address listed on the back page of this manual to receive these[...]

  • Page 28

    28 100096 1 2 3 4 5 6 7 8 8 9 10 11 12 13 14 15 17 19 21 22 23 24 20 27 26 18 28 16 25 10-1 10-2 ODS/Pilot[...]

  • Page 29

    29 100096 RN30B P ARTS LIST 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. KEY PART NO. NUMBER DESCRIPTION QTY. 1 098304-01 Screw, #10 x 3/8" 2 2 098345-01AC Front Panel 1 3 098197-04 Grill Guard 1 4 098342-01 Clip, Grill Guard 2 5[...]

  • Page 30

    30 100096 12-1 12-2 ODS/Pilot 1 2 3 4 5 6 7 8 9 10 10 11 12 13 14 15 16 17 19 27 21 23 24 25 26 22 29 28 20 30 18[...]

  • Page 31

    31 100096 CGN18B P ARTS LIST 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. KEY PART NO. NUMBER DESCRIPTION QTY. 1 098304-01 Screw, #10 x 3/8" 2 2 098742-03 Front Panel 1 3 098197-03 Grill Guard 1 4 098342-01 Grill Guard Clip 2 5 0[...]

  • Page 32

    LIMITED WARRANTY VENT-FREE 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 under this warranty the Bill [...]