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VENTED NATURAL
GAS HEATERS
OWNER’S OPERATION AND INSTALLATION MANUAL
Models: CGB35N and CGB50N
WARNING: Improper installation,
WARNING: If the information in this manual
is not followed exactly, a fire or explosion
adjustment, alteration, service, or
may result causing property damage, per-
maintenance can cause property
sonal injury, or loss of life.
damage, personal injury or loss of
FOR YOUR SAFETY
life. Refer to this manual for cor-
— Do not store or use gasoline or other
rect installation a
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SECTION PAGE CONTENTS Safety Information......................................................................... 3 Product Identification .................................................................... 5 Local Codes ................................................................................... 6 Unpacking .................................................................................... 6 Product Features ............................................................................ 6
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SAFETY WARNINGS WARNING ICON G 001 IMPORTANT: Read this owner’s manual carefully and completely be- INFORMATION fore trying to assemble, operate, or service this heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion, electrical shock, and carbon monoxide poisoning. DANGER WARNING ICON G 001 Carbon monoxide poisoning may lead to death! Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, or n
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SAFETY WARNINGS Continued WARNING ICON G 001 INFORMATION 6. Provide the following minimum heater clearances from combustibles (as viewed Continued from the front of heater): Front: 48 inches Back: 6 inches Top: 53 inches Right Side: 12 inches Left Side: 6 inches 7. Do not run heater • where flammable liquids or vapors are used or stored • under dusty conditions 8. Never place clothing or any flammable objects on the heater or venting system. 9. Heater and venting system surfaces are very hot du
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PRODUCT Control Knob IDENTIFICATION Ignitor Button Lower Front Access Panel Figure 1 - Vented Natural Gas Heater Draft Hood Outlet for Venting System Control Valve Figure 2 - Vented Natural Gas Heater, Rear View 5 100351
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Install and use heater with care. Follow all local codes. In the absence of local LOCAL CODES codes, use the latest edition of the following: • National Fuel Gas Code ANSI Z223.1, also known as NFPA 54 * • National Electrical Code ANSI/NFPA 70 * *Available from: American National Standards Institute, Inc. 1430 Broadway New York, NY 10018 National Fire Protection Association, Inc. Batterymarch Park Quincy, MA 02269 1. Remove heater from carton. UNPACKING 2. Remove all protective packaging appli
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LOCATING HEATER INSTALLING HEATER WARNING WARNING ICON G 001 Maintain the minimum clearances shown in Figure 3, Continued below. If you can, provide greater clearances. WARNING WARNING ICON G 001 Never install the heater • in a mobile home or a recreational vehicle. • where curtains, furniture, clothing, or other flam- mable objects are less than 48 inches from the front, 53 inches from the top, 12 inches from the right side and 6 inches from the left side and back of heater. • directly on car
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VENTING HEATER INSTALLING Note: Venting/chimney materials are not supplied with heater. HEATER Continued WARNING WARNING ICON G 001 A qualified service person must install the venting system for this heater. If venting system is not properly installed and maintained, the vent safety shut-off system will pre- vent the heater from running. Follow all local codes. WARNING WARNING ICON G 001 This heater has a vent safety shut-off system. This system shuts off the heater gas supply if you do not ve
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VENTING HEATER (continued) INSTALLING WARNING ICON G 001 WARNING HEATER Do not vent heater in any of the following ways (see Figure 4). Continued The vertical section of vent pipe must Heater must be vented to the out- extend at least two feet above the doors. Never vent heater to another highest point of any roof within ten room or inside a building. feet. Never extend vent pipe horizontally Never extend vent pipe horizontally through a chimney or flue. You must through outside wall
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VENTING HEATER (continued) INSTALLING Proper Size Vent HEATER To safely vent heater, the vent connector pipe must be the same diameter as the draft Continued hood outlet on the rear of the heater. Pipe that is too small can cause flue gas to spill from the heater. Fasten vent connector to the draft hood outlet with a sheet metal screw. Vent Types Prefabricated or Masonry All-Fuel Chimney - This is a masonry chimney or a residential-type prefabricated chimney. Only use prefabricated chimneys list
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CONNECTING TO GAS SUPPLY INSTALLING HEATER WARNING WARNING ICON G 001 Continued A qualified service person must connect heater to gas supply. Follow all local codes. WARNING WARNING ICON G 001 Never connect heater to private (non-utility) gas wells. This gas is commonly known as well-head gas. IMPORTANT: Check gas line pressure at gas meter before connecting heater to gas line. Gas line pressure must be no greater than 14 inches of water. If gas line pressure is higher, heater regulator damage
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Installation must include a manual shutoff valve, ground joint union, plugged 1/8" INSTALLING NPT tap, and a sediment trap. Locate NPT tap within reach for test gauge hook up. HEATER NPT tap must be upstream from heater (see Figure 7). Continued Apply pipe joint sealant lightly to male threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged heater valves. CAUTION WARNING ICON G 001 Use pipe joint sealant that is resistant to liquid petro- l
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CHECKING GAS CONNECTIONS INSTALLING HEATER WARNING WARNING ICON G 001 Continued Test all gas piping and connections for leaks after install- ing or servicing. Correct all leaks at once. WARNING WARNING ICON G 001 Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once. Pressure Testing Gas Supply Piping System Test Pressures In Excess of 1/2 PSIG 1. Disconnect heater and its individual manual sh
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INSTALLING GLASS PANEL INSTALLING 1. Locate the glass panel package inside the back of the heater. HEATER Continued WARNING ICON G 001 CAUTION Before installing glass panels, inspect the edges. If you notice any chips or cracks, do not install. If the surface on either side is deeply scratched, do not install. If these conditions exist, call DESA International’s Technical Ser- vice Department at 1-800-323-5190 for replacement glass panels. CAUTION WARNING ICON G 001 Do not operate heater withou
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6. Insert top edge of glass panel into the upper glass retaining channel (see Figure 11). INSTALLING HEATER Continued Hearth Assembly Glass Panel Lower Front Access Area Figure 10 - Inserting Glass Panels CAUTION WARNING ICON G 001 Make sure you insert top edge of glass panels into the upper glass retaining channel. Do not install glass panels with top edge of glass in front of the upper glass retaining channel. Glass panels will not automatically go into the channel. You must guide the glass p
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FRESH AIR FOR WARNING WARNING ICON G 001 COMBUSTION This heater must have fresh air for proper operation. If not, poor fuel combustion and improper venting of flue AND gases will result. Carbon monoxide poisoning from VENTILATION backed-up flue gases could occur. 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. New materials, increased insulation, and new construction meth
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DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION FRESH AIR FOR Example 1: Locating Heater in Unconfined (Open) Area COMBUSTION AND NOTICE An unconfined area has a minimum air volume of 50 VENTILATION cubic feet for each 1000 BTU/Hr input rating of all Continued appliances in the area (cubic feet equals length x width x height of area). Include adjoining rooms only if there are no doors between the rooms or if you add ventila- tion grills between the rooms (see Ventilating Confined Area, page 19).
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Draft Hood Spillage: This is a hazardous situation. Draft hood spillage re- FRESH AIR FOR leases poisonous carbon monoxide gas into your home. COMBUSTION DANGER WARNING ICON G 001 AND Carbon monoxide poisoning may lead to death! VENTILATION If draft hood spillage occurs, check for blocked flue connectors, vent pipes, and Continued chimneys. If you find blockage, remove. Test again for spillage. If spillage still occurs or there was no blockage, you need more fresh, outside air in the house. You
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Example 2: Locating Heater in Confined (Closed) Area FRESH AIR FOR COMBUSTION NOTICE AND A confined area has an air volume of less than 50 cubic feet for each 1000 BTU/Hr input rating of all appliances VENTILATION in the area (cubic feet equals length x width x height of Continued area). Include adjoining rooms only if there are no doors between the rooms. If you install this heater in a confined area, you must provide additional fresh air. Ventilating Confined Area This fresh air would come fro
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OPERATING WARNING ICON G 001 WARNING Heater and venting system surfaces are very hot during HEATER operation. Keep children and adults away from hot sur- faces to avoid burns and clothing ignition. Carefully super- vise young children when they are in the same room as heater. Heater will remain hot for a time after shut down. Let surface cool before touching. NOTICE If operating heater for the first time, a slight odor will occur. This odor will go away after a few hours of operation. FOR YOUR S
