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UNVENTED (VENT-FREE) BLUE FLAME GAS HEATER
SAFETY INFORMATION AND INSTALLATION MANUAL
MODELS CBN20T, CBP20T, CBN30T, CBP30T, CBT20NT, CBT20PT,
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.
CBT30NT AND CBT30PT
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Summary of Contents for Desa CBT30NT, CBT30PT
- Page 1 UNVENTED (VENT-FREE) BLUE FLAME GAS HEATER SAFETY INFORMATION AND INSTALLATION MANUAL MODELS CBN20T, CBP20T, CBN30T, CBP30T, CBT20NT, CBT20PT, 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 con- tains and/or generates chemicals known to the State of California to cause cancer or birth defects or other reproductive 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: Local Codes
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) Add the Btu/Hr of all fuel burning appliances in the space. Vent-free heater _____________ Btu/Hr Gas water heater* _____________ Btu/Hr Gas furnace _____________ Btu/Hr Vented gas heater _____________ Btu/Hr Gas fireplace logs...
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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 WARNING: Maintain the minimum clearances shown in Figure 4. If you can, provide greater clearances from floor, ceiling and joining wall. A wall mounting bracket is included with this heater. An Optional Base Kit (GA4550) may be purchased to allow the unit to be installed away from a wall (see Accessories, page 26).
- Page 9 INSTALLATION Continued INSTALLING HEATER TO WALL Mounting Bracket Locate mounting bracket in heater carton. Remove mounting bracket from heater carton. Figure 6 - Mounting Bracket Removing Front Panel Of Heater 1. Remove the four painted screws, two on each side of front panel. 2.
- Page 10 INSTALLATION Continued Attaching To Wall Stud Method For attaching mounting bracket to wall studs 1. Drill holes at marked locations using 9/64" drill bit. 2. Place mounting bracket onto wall. Line up last hole on each end of bracket with holes drilled in wall.
- Page 11 INSTALLATION Continued MOUNTING HEATER TO FLOOR (OPTIONAL) Mounting Base Feet to Heater 1. Lay heater cabinet on its back on a table with the heater bottom overhanging the table edge. 2. Align holes in base foot with mounting holes on bottom of cabinet (see Figure 13). 3.
- Page 12 INSTALLATION Continued Install sediment trap in supply line as shown in Figure 15. Locate sediment trap where it is within reach for cleaning. Locate sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into heater controls.
- Page 13 INSTALLATION Continued CHECKING GAS CONNECTIONS WARNING: Test all gas piping and connections, internal and external to unit, for leaks after installing or servicing. Correct all leaks at once. WARNING: Never use an open flame to check for a leak. Apply a noncorrosive leak detec- tion fluid to all joints.
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Page 14: Operating Heater
6. Turn control knob counterclockwise to the PILOT position. Press in control knob for five (5) seconds. 7. With control knob pressed in, push down and release ignitor button. This will light pilot. The pilot is attached to the front of burner. -
Page 15: Inspecting Heater
OPERATING HEATER Continued TO TURN OFF GAS TO APPLIANCE Shutting Off Heater 1. Turn control knob clockwise OFF position. 2. Turn off all electric power to the appliance if service is to be performed. Shutting Off Burner Only (pilot stays lit) Turn control knob clockwise PILOT position. -
Page 16: Cleaning And Maintenance
INSPECTING HEATER Continued BURNER FLAME PATTERN WARNING: If yellow tipping occurs, your heater could pro- duce increased levels of carbon monoxide. NOTICE: Do not mistake orange flames with yellow tipping. Dirt or other fine particles enter the heater and burn causing brief patches of orange flame. -
Page 17: Service Hints
1. Shut off the unit, including the pilot. Allow the unit to cool for at least thirty minutes. 2. Inspect burner, pilot for dust and dirt. 3. Blow air across the ports/slots and holes in the burner. 4. Never insert objects into the pilot tube. Clean the pilot assembly also. -
Page 18: 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 19 OBSERVED PROBLEM ODS/pilot lights but flame goes out when control knob is released Burner(s) does not light after ODS/pilot is lit Delayed ignition of burner(s) Burner backfiring during com- bustion 107882-01M TROUBLESHOOTING Continued POSSIBLE CAUSE 1. Control knob not fully pressed in 2.
- Page 20 OBSERVED PROBLEM Yellow flame during burner combustion Slight smoke or odor during initial operation Heater produces a clicking/tick- ing noise just after burner is lit or shut off Heater produces a whistling noise when burner is lit White powder residue forming within burner box or on adjacent walls or furniture Heater shuts off in use (ODS...
- Page 21 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 22: Specifications
SPECIFICATIONS CBN20T • Natural Gas • 10,000/20,000 Btu/Hr (Variable) • Piezo Ignition • Pressure Regulator Setting - 3" W.C. • Inlet Gas Pressure* (in. of water) Maximum - 10.5" - Minimum - 4" • Heater Dimensions H x W x D 26.25"... -
Page 23: Replacement Parts
PARTS NOT UNDER WARRANTY Contact authorized dealers of this product. If they canʼt supply original replacement part(s), either contact your nearest Parts Central (see page 27) or call DESA Heating Products at 1-866-672-6040 for referral information. When calling DESA Heating Products, have ready •... -
Page 24: Illustrated Parts Breakdown And Parts List
ILLUSTRATED PARTS BREAKDOWN MODELS CBN20T, CBP20T, CBN30T, CBP30T, CBT20NT, CBT20PT, CBT30NT AND CBT30PT Install battery Batter according to Positiv this illustration Battery (Actual ignitor Negative may vary) www.desatech.com 107882-01M... -
Page 25: Parts List
This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 23 of this manual. NO. PART NO. DESCRIPTION 111435-01 Electronic Ignitor 097159-04 Piezo Ignitor 107954-03CV Front Panel 107954-01 Front Panel 107955-01 Front Panel 107955-03CV Front Panel... -
Page 26: Accessories
If they can not supply these accessories, either contact your nearest Parts Central (see page 27) or call DESA Heating Products at 1-866-672-6040 for referral information. You can also write to the address listed on the back page of this manual. -
Page 27: 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 28: Warranty Information
This warranty is extended only to the original retail purchaser. This warranty covers the cost of part(s) required to restore this heater to proper operating condition and an allowance for labor when provided by a DESA Heating Products Authorized Service Center. Warranty part(s) MUST be obtained through authorized dealers of this product and/or DESA Heating Products who will provide original factory replacement parts.