GAS COOKTOP COS-GRT304 COS-GRT366 COS-GRT486G Installation & User Manual IMPORTANT SAFETY INSTRUCTIONS: Carefully read the following important information regarding installation safety and maintenance. Keep these instructions for future reference.
THANK YOU FOR YOUR PURCHASE Thank you for your purchase! We know that you have many brands and products to choose from and we are honored to know that you have decided to take one of our products into your home and hope that you enjoy it. COSMO appliances are designed according to the strictest safety and performance standards for the North American market. We follow the most advanced manufacturing philosophy. Each appliance leaves the factory after thorough quality inspection and testing.
TABLE OF CONTENTS SAFETY & WARNINGS .......................................................... 4-5 INSTALLATION INSTRUCTIONS ...........................................6-19 Gas Connections ........................................................................6-7 Installation / Clearances ..........................................................8-9 Electrical Requirements ................................................................9 Wiring Diagram ......................................................
SAFETY & WARNINGS • Read this entire installation manual carefully prior to installation and save it for the local inspector’s reference. Keep this installation manual for future reference. • This installation must be completed by a qualified appliance installer, service company, or gas supplier. • Features and specifications are subject to change at any time without notice. If you have any questions, visit cosmoappliances.com or call Cosmo Customer Service at: 1-888-784-3108.
SAFETY & WARNINGS WARNING! • Children should not play with packaging material. Dispose of the carton and plastic bags after the range top is unpacked. Cartons covered with rugs, bedspreads, or plastic sheets can become air-tight chambers. • Remove all staples from the carton. Staples can cause severe cuts and destroy finishes if they come in contact with other appliances or furniture. • Be safety conscious. The preparation of food on a range top requires temperatures that could cause severe burns.
INSTALLATION INSTRUCTIONS Be sure the cooktop is properly installed and grounded by a qualified technician. It is the responsibility of the technician to make certain that your cooktop is properly installed. Situations caused by the improper installation are not covered under the warranty. Any expenses incurred due to such situations will not be paid by the manufacturer of the cooktop.
INSTALLATION INSTRUCTIONS GAS CONNECTIONS (All Units) (Continued) The installation of cooktops designed for recreational vehicle installation must conform with state or other codes or, in the absence of such codes, with the standard for recreational vehicles. ANSI A119.2.2–1982 in the U.S.A. or CAN/CGA Z240.4.2 in Canada.
INSTALLATION INSTRUCTIONS INSTALLATION / CLEARANCES All units must be installed in accordance with the minimum rear and side wall clearances and clearances extended vertically above the cooktop which are stated on the serial plate (the serial plate is located on the back of the unit.) Make sure that the wall coverings, countertops, and cabinets around the cooktop can withstand temperatures of up to 200˚F / 93˚C generated by the cooktop.
INSTALLATION INSTRUCTIONS INSTALLATION / CLEARANCES (Continued) Installation in an island • NOTE: There must be a minimum of 6” (15.2 cm) clearance from the rear of the cooktop to a combustible wall. Clearances from non-combustible materials are not part of the ANSI Z21.1 scope and are not certified by CSA. Clearances to non-combustible materials must be approved by the authority having jurisdiction. • This cooktop may be installed directly adjacent to existing 36” (91.4 cm) high base cabinets.
INSTALLATION INSTRUCTIONS ELECTRICAL REQUIREMENTS (continued) Wiring Diagrams 1.) Cable terminal 2.) Ignition switch 3.) Spark generator 4.) Ignition spark L. Black N. White T.
INSTALLATION INSTRUCTIONS COOKTOP INSTALLATION • Installation and service must be performed by a qualified installer, service agency or the gas supplier. • Remove the cooktop from its package and set aside all burners, burner caps and cooking grates. • Gently slide in the range top half into the cut-out, make sure your gas connection and electrical power plug are properly installed. • Once this is done you’re now ready to slide the cooktop all the way back to the wall.
INSTALLATION INSTRUCTIONS ATTACHING THE COOKTOP To prevent liquids from leaking accidentally into the underlying storage space, the appliance is equipped with a special gasket. To apply this gasket: 1.) Lay out the protective sealing strips along the edges of the opening in the countertop and carefully overlap the strip end. 2.) Insert the cooktop into the countertop opening. 3.) With a screwdriver, assemble brackets to the cooktop bottom with the screws (See below diagram). 4.
INSTALLATION INSTRUCTIONS CONNECTING TO GAS COOKTOP (continued) • For correct operation, the pressure of natural gas supplied to the regulator should be between 4” and 5” of the water column. For LP gas, the pressure supplied must be between 10” and 12” of the water column. B = 1.89 in. D = 7.91 in. • For NG: The gas supply is connected to the regulator loose. The inlet connection has a 1/2" B.S.P. male thread.
INSTALLATION INSTRUCTIONS CONNECTING TO GAS COOKTOP (continued) To prevent gas leaks, use pipe joint compound resistant to NG gases on all-male external pipe threads. 1.) In an easily accessible location, install a service manual gas shut-off valve. Be sure everyone operating the cooktop knows where and how to shut off the gas supply to the cooktop. 2.) Use a flexible gas line to connect to the 1/2” fitting, located on the bottom righthand corner underneath the cooktop.
INSTALLATION INSTRUCTIONS Rubber Pad Installation on Back Panel To prevent the cooktop from coming into contact with the wall, 2 rubber pads are included with the cooktop. To install the pads to the back panel of the cooktop: 1.) Locate the installation kit packed with the appliance. 勹勹 Screws (2x) Rubber Pad (2x) 2.
INSTALLATION INSTRUCTIONS Adjustable Leg Installation (48 in. Model Only) The 48 inch cooktop may include adjustable feet. To install the adjustable feet to the bottom of the cooktop: 1.) Locate the installation kit packed with the appliance. 2.) Arrange the cooktop on the floor with soft material for protection. Set aside all the cooking grates, burners, and griddle cover to avoid any potential damage. 3.
INSTALLATION INSTRUCTIONS NATURAL GAS (NG) TO LIQUEFIED PETROLEUM (LP) GAS CONVERSION INSTALLATION AND SERVICING MUST BE PERFORMED BY A QUALIFIED INSTALLER. SAVE THIS MANUAL FOR THE LOCAL INSPECTOR’S USE. READ AND SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE. WARNING!: This conversion kit must be installed by a qualified service technician in accordance with the manufacturer's instructions and all applicable codes and requirements of the authority having jurisdiction.
INSTALLATION INSTRUCTIONS NATURAL GAS (NG) TO LIQUEFIED PETROLEUM (LP) GAS CONVERSION (Continued) Pressure Regulator Adjustment for Gas Conversion The pressure regulator supplied with the cooktop is a convertible pressure regulator for use with Natural Gas (NG) at a nominal outlet pressure of 4” W.C., or Liquefied Petroleum Gas (LP) at a nominal outlet pressure of 10” W.C. B = 1.89 in. D = 7.91 in. Your cooktop is shipped from the factory set for use with NG.
INSTALLATION INSTRUCTIONS REGULATE BURNER FLAME INTENSITY To regulate the minimum flame on the burners, carry out the following procedure indicated below: 1.) Turn on the burner and put the knob onto position MINIMUM (small flame). 2.) Remove the knob of the tap which is set for standard pressure. The knob is found on the shaft of the valve itself. 3.
PRODUCT DIAGRAM - GRT304 1.3 in. 7.87 in. 27. 37 in . SIDE VIEW 29.87 in. 1.3 in. 7.87 in. FRONT VIEW 2.75 in. 23.9 in. 27.37 in.
PRODUCT DIAGRAM - GRT366 TOP VIEW 36" 36" FRONT VIEW 8.7" 27" 24" SIDE VIEW 6.9" 25.8" 27.4" 21 0.
PRODUCT DIAGRAM - GRT486G TOP VIEW 47.9" 47.9" FRONT VIEW 8.7" 27" 24" 0.8" SIDE VIEW 6.9" 25.8" 27.
OPERATING INSTRUCTIONS GUIDELINES FOR USING COOKTOP BURNERS WARNING!: Keep cooktop area clear and free from combustible materials, gasoline, and other flammable vapors and liquid. WARNING!: DO NOT use the cooktop as a room/space heater; this may result in carbon monoxide poisoning. • This appliance is intended for cooking food; it must NOT be used for any other purpose. • Never leave the range top unattended when in use. Boil over causes smoking and greasy spills that may ignite.
OPERATING INSTRUCTIONS SURFACE BURNER IGNITION Light the burners before placing pans on the grid and check that the flame is regular. 1.) Push and turn the appropriate control knob counter-clockwise to the “IGNITE” position; you will hear a clicking noise the sound of the electric spark igniting the burner. 2.) Once burner ignition has been achieved, then turn the burner control knob to adjust the desired heat setting (See diagram).
OPERATING INSTRUCTIONS TIPS FOR USING POTS & PANS CORRECTLY Always ensure that the bottom and handles of pots and pans do not overextend from the cooktop. When cooking with flammable fat such as oil, do not leave the range unattended. Use pots of the appropriate size on each burner using the following chart: BURNER & RECOMMENED POT/PAN SIZE • Auxiliary: 3 1/2 - 5 1/2 in. (90 - 140mm) • Semi Rapid: 5 1/2 - 10 1/4 in. (140 - 260mm) • Rapid: 7 1/8 - 10 1/4 in. (180 - 260mm) • Dual Burner: 8 2/3 - 10 1/4 in.
CARE & MAINTENANCE CLEANING THE COOKTOP Periodically clean the burner heads, the cast iron grates, and the burner caps using warm water. Remove burned food and fat residue with a rubber spatula. If food residue prevents the smooth operation of the knob controls, please contact Cosmo Customer Service to schedule service by a factory-trained professional (See Page 29). CLEANING THE STAINLESS STEEL For best results, use a stainless steel cleaning product with a soft sponge or wipe.
CARE & MAINTENANCE GREASING THE VALVES If it becomes difficult to operate the valve, it should be greased immediately by following the steps below: 1.) Disassemble the valve body by loosening the two screws located on the body of the valve. 2.) Extract and clean the seal cone and its housing with a rag soaked with thinners. 3.) Lightly grease the cone with special grease. 4.
TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION Burners will not light Burner parts or igniters may be wet, dirty or misaligned Check burner parts are clean, dry and correctly assembled. Check igniters are clean and dry; see Page 26 Top burner will not stay lit Failed thermocouple Replace thermocouple Flames do not burn all around the burner cap Burner parts may be dirty or misaligned See "Care & Maintenance", Page 26 Burner flames are very large and yellow • Burner bezel ports are clogged.
TROUBLESHOOTING PROBLEM No ignition spark POSSIBLE CAUSE Dead batteries or ignition module failed SOLUTION Replace batteries and attempt ignition; if there is still no spark ignition, the range top burners can still be used. To light them: 1.) Holding a lit match to the flame spreader, push in on the control knob and turn counter clockwise to LIGHT 2.
WARRANTY AND SERVICE For full warranty details on this product please visit: http://www.cosmoappliances.com/warranty TO RECEIVE WARRANTY SERVICE, YOUR PRODUCT MUST BE REGISTERED. TO REGISTER, VISIT: WWW.COSMOAPPLIANCES.
IMPORTANT Do Not Return This Product To The Store If you have a problem with this product, please contact Cosmo Customer Support at +1(888)784-3108 DATED PROOF OF PURCHASE, MODEL #, AND SERIAL # REQUIRED FOR WARRANTY SERVICE IMPORTANT Ne pas Réexpédier ce Produit au Magasin Pour tout problème concernant ce produit, veuillez contacter le service des consommateurs Cosmo Customer Support au +1(888) 784-3108 UNE PREUVE D’ACHAT DATEE EST REQUISE POUR BENEFICIER DE LA GARANTIE.
Cosmo is constantly making efforts to improve the quality and performance of our products, so we may make changes to our appliances without updating this manual. Electronic version of this manual is available at: www.cosmoappliances.
