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UNVENTED (VENT-FREE) BLUE FLAME GAS HEATER
SAFETY INFORMATION AND INSTALLATION MANUAL
MODELS GWN6, GWP6, GWN10, GWP10
WARNING: If the information in this manual is not fol-
lowed 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 and liquids in the vicinity of this or any other
appliance.
— WHAT TO DO IF YOU SMELL GAS
• 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, call the fire
department.
— Installation and service must be performed by a quali-
fied installer, service agency or the gas supplier.
For more information, visit www.desatech.com
GWN10T AND GWP10T
Save this manual for future reference.
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Related Manuals for Desa GWP10 GWN10T
Summary of Contents for Desa GWP10 GWN10T
- Page 1 UNVENTED (VENT-FREE) BLUE FLAME GAS HEATER SAFETY INFORMATION AND INSTALLATION MANUAL MODELS GWN6, GWP6, GWN10, GWP10 WARNING: If the information in this manual is not fol- lowed exactly, a fire or explosion may result causing property damage, personal injury or loss of life. —...
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Page 2: Table Of Contents
WARNING: Improper installation, adjustment, altera- tion, service or maintenance can cause injury or prop- erty damage. Refer to this manual for correct installation and operational procedures. For assistance or addi- tional information consult a qualified installer, service agency or the gas supplier. WARNING: This is an unvented gas-fired heater. -
Page 3: Safety Information
SAFETY INFORMATION WARNING: This product contains and/or generates chemicals known to the State of California to cause cancer or birth defects or other reproduc- tive harm. IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, operate or service this heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion,... -
Page 4: Product Identification
SAFETY INFORMATION Continued 5. This heater needs fresh, outside air ventilation to run properly. This heater has an Oxygen Depletion Sensing (ODS) safety shutoff system. The ODS shuts down the heater if not enough fresh air is available. See Air for Combustion and Ventilation, page 5. -
Page 5: Air For Combustion And Ventilation
AIR FOR COMBUSTION AND VENTILATION WARNING: This heater shall not be installed in a confined space or unusually tight con- struction unless provisions are provided for adequate combus- tion and ventilation air. Read the following instructions to insure proper fresh air for this and other fuel-burning appliances in your home. - Page 6 20 = 51,200 (maximum Btu/Hr the space can support) 3. Add the Btu/Hr of all fuel burning appliances in the space. Vent-free heater Gas water heater* Gas furnace Vented gas heater Gas fireplace logs Other gas appliances* + __________ Btu/Hr...
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Page 7: Installation
AIR FOR COMBUSTION AND VENTILATION Continued Ventilation Grills into Adjoining Remove Room, Door into Option 1 Adjoining Room, Option 3 12" Figure 2 - Ventilation Air from Inside Building Ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or ducts. - Page 8 INSTALLATION Continued LOCATING HEATER This heater is designed to be mounted on a wall. WARNING: Maintain the minimum clearances shown in Figure 4. If you can, provide greater clearances from floor, ceiling and joining wall. WARNING: Never install the heater •...
- Page 9 INSTALLATION Continued " (22.5 cm) Minimum To Maintain 6" (15.3 cm) Clearance From Wall Mounting Screw Locations FLOOR Figure 5 - Mounting Screw Locations Installing Two Mounting Screws Note: Wall anchors and mounting screws are in hardware package. The hardware package is provided with heater.
- Page 10 INSTALLATION Continued WARNING: For natural gas, never connect heater to private (non-utility) gas wells. This gas is commonly known as wellhead gas. IMPORTANT: For natural gas, check gas line pressure before connecting heater to gas line. Gas line pressure must be no greater than 10.5 inches of water.
- Page 11 Equipment Shutoff Valve * 3" Min. Cap Pipe Sediment Trap Figure 13 - Gas Connection * A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certified equipment shutoff valve from your dealer.
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Page 12: Operating Heater
INSTALLATION Continued Meter Figure 15 - Checking Gas Joints for Natural Gas Propane/LP Supply Tank Figure 16 - Checking Gas Joints for Propane/LP Gas Equipment Shutoff Valve Equipment Shutoff Valve www.desatech.com 117001-01A... - Page 13 LIGHTING INSTRUCTIONS 1. STOP! Read the safety information, page 12. 2. Make sure equipment shutoff valve is fully open. 3. Turn off any electric power to the appliance if service is to be performed. 4. Turn control knob clockwise OFF position. 5.
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Page 14: Inspecting Heater
OPERATING HEATER Continued INSPECTING HEATER Check pilot flame pattern and burner flame pat- tern often. PILOT FLAME PATTERN Figure 20 shows a correct pilot flame pattern. Figure 21 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. -
Page 15: Cleaning And Maintenance
INSPECTING HEATER Continued (Models GWN6 and GWP6 will be lower due to CORRECT FLAME PATTERN AT HIGH POSITION lower input rating) CORRECT FLAME PATTERN AT HIGH POSITION Figure 22 - Correct Burner Flame Pattern INCORRECT FLAME PATTERN AT HIGH POSITION INCORRECT FLAME PATTERN Figure 23 - Incorrect Burner Flame AT HIGH POSITION... -
Page 16: Troubleshooting
WARNING: Turn off and unplug heater and let cool before servicing. Only a qualified service person should service and repair heater. CAUTION: Never use a wire, needle or similar object to clean ODS/pilot. This can damage ODS/pilot unit. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM When ignitor button is pressed in, there is no spark at ODS/... - Page 17 OBSERVED PROBLEM ODS/pilot lights but flame goes out when control knob is released Burner does not light after ODS/pilot is lit Delayed ignition of burner Burner backfiring during com- bustion 117001-01A TROUBLESHOOTING Continued POSSIBLE CAUSE 1. Control knob not fully pressed in 2.
- Page 18 OBSERVED PROBLEM Yellow flame during burner combustion Slight smoke or odor during initial operation Heater produces a whistling noise when burner is lit Heater produces a clicking/tick- ing noise just after burner is lit or shut off White powder residue forming within burner box or on adjacent walls or furniture TROUBLESHOOTING...
- Page 19 WARNING: 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. Fol- low the gas supplier’s instructions.
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Page 20: Illustrated Parts Breakdown And Parts List
ILLUSTRATED PARTS BREAKDOWN MODELS GWP6, GWN6, GWP10 AND GWN10 www.desatech.com 11-1 ODS/Pilot 117001-01A... -
Page 21: Parts List
This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 25 of this manual. NO. PART NO. 098304-01 Screw, #10 x 3/8" 099467-07 Front Panel 099318-04 Grill Guard 101108-01 Grill Guard Clip 102017-02 Bottom Glass Retainer 098260-11 Glass Panel 099319-02 Top Glass Retainer... - Page 22 ILLUSTRATED PARTS BREAKDOWN MODELS GWP10T AND GWN10T www.desatech.com ODS/Pilot 11-1 117001-01A...
- Page 23 This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 25 of this manual. PART NO. 098304-01 Screw, #10 x 3/8" 099467-07 Front Panel Assembly 099318-04 Grill Guard 101108-01 Grill Guard Clip 102017-02 Bottom Glass Retainer 098260-11 Glass Panel 099319-02 Top Glass Retainer...
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Page 24: Specifications
SPECIFICATIONS GWP6 • 4,400/6,000 Btu/hr (Variable) • Propane/LP Gas • Piezo Ignition • Pressure Regulator Setting - 8" W.C. • Inlet Gas Pressure (inches of water) Maximum - 14", Minimum - 11" • Heater Dimensions (H x W x D) 21.5"... -
Page 25: Accessories
Heating Productsʼ Technical Service Department at 1-866-672-6040. When calling please have your model and serial numbers of your heater ready. You can also visit DESA Heating Productsʼ techni- cal service web site at www.desatech.com. SERVICE PUBLICATIONS You can purchase a service manual from the address listed on the back page of this manual. -
Page 26: Parts Central
These Parts Centrals are privately owned businesses. They have agreed to support our customerʼs needs by providing original replacement parts and accessories. Tool & Equipment Co. 5 Manila Ave Hamden, CT 06514-0322 1-800-397-7553 203-248-7553 Portable Heater Parts 342 N. County Rd. 400 East Valparaiso, IN 46383-9704 219-462-7441 1-888-619-7060... - Page 27 ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ 117001-01A NOTES www.desatech.com...
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Page 28: Warranty Information
We make no other warranty, expressed or implied. LIMITED WARRANTIES FOR NEW AND FACTORY DESA Heating Products warrants this heater and any parts thereof, to be free of defects in materials New Products: and workmanship for two (2) years from the date of first purchase, when operated and maintained in accordance with the manufacturer's instructions.