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INFRARED VENT-FREE PROPANE/LP GAS HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
FB-3B
FBS-3C
FB-5B
FBS-5C
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 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 qualified installer, service agency, or the
gas supplier.
This appliance may be installed in an aftermarket*, permanently located, manufac-
tured (mobile) home, where not prohibited by local codes.
This appliance is only for use with the type of gas indicated on the rating plate. This
appliance is not convertible for use with other gases.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
Save this manual for future reference.
WARNING: Improper instal-
lation, adjustment, alteration,
service, or maintenance can
cause injury or property dam-
age. Refer to this manual for
correct installation and op-
erational procedures. For as-
sistance or additional infor-
mation consult a qualified in-
staller, service agency, or the
gas supplier.
WARNING: This is an
unvented gas-fired heater.
It uses air (oxygen) from the
room in which it is installed.
Provisions for adequate
combustion and ventilation
air must be provided. Refer
to Air For Combustion and
Ventilation section on page
4 of this manual.
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Table of Contents
Related Manuals for Desa Glo-Warm FB-3B
Summary of Contents for Desa Glo-Warm FB-3B
- Page 1 INFRARED VENT-FREE PROPANE/LP GAS HEATER OWNER’S OPERATION AND INSTALLATION MANUAL FB-3B FBS-3C FB-5B FBS-5C 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.
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Page 2: Safety Information
INFRARED PROPANE/LP GAS HEATER SAFETY INFORMATION WARNINGS IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, oper- ate, or service this heater. Im- proper use of this heater can cause serious injury or death from burns, fire, explosion, electrical shock, and carbon monoxide poisoning. -
Page 3: Product Identification
PRODUCT IDENTIFICATION Front Panel Figure 1 - Vent-Free Propane/LP Gas Heater (Model FB-5B Shown) 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 ANS Z223.1, also known as NFPA 54*. -
Page 4: Fresh Air For Combustion And Ventilation
INFRARED PROPANE/LP GAS HEATER FRESH AIR FOR COMBUSTION AND VENTILATION WARNING: This heater shall not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion and ven- tilation air. Read the following in- structions to insure proper fresh air for this and other fuel-burning appliances in your home. -
Page 5: Determining Fresh-Air Flow For Heater Location
Example: 2560 cu. ft. (volume of space) 50 cu. ft. = 51.2 or 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 ___________________ Btu/Hr Gas water heater* ___________________ Btu/Hr Gas furnace ___________________ Btu/Hr... - Page 6 INFRARED PROPANE/LP GAS HEATER FRESH AIR FOR COMBUSTION AND VENTILATION 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 pro- vide two permanent openings: one within 12"...
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Page 7: Check Gas Type
INSTALLATION NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your pri- mary heating system. Do not in- stall this heater as your primary heat source. If you have a central heating system, you may run system’s circulating blower while using heater . - Page 8 Figure 7 - Removing Front Panel of Heater (Model FBS-3B Shown) Removing Front Panel Of Heater Models FB-3B and FB-5B 1. Remove two screws near bottom cor- ners of lower front panel. 2. Pull bottom of lower front panel for- ward, then down (see Figure 8).
- Page 9 INSTALLATION Continued Attaching Mounting Bracket To Wall Note: Wall anchors, mounting screws, and spacers are in hardware package. The hard- ware package is provided with heater. Attaching to Wall Stud Method For attaching mounting bracket to wall studs 1. Drill holes at marked locations using 9/64"...
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Page 10: Connecting To Gas Supply
Use pipe of large enough diameter to allow proper gas vol- ume to heater. If pipe is too small, undue loss of pressure will occur. Typical Inlet Pipe Diameters FB-3B/FBS-3C 3/8" or greater FB-5B/FBS-5C 1/2" or greater Installation must include equipment shutoff valve, union, and plugged 1/8"... -
Page 11: Checking Gas Connections
Location Non- Thermostat Models Figure 17 - Checking Gas Joints OPERATING HEATER NON-THERMOSTAT MODELS FB-3B AND FB-5B FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not fol- low these instructions exactly, a fire or explosion may result caus- ing property damage, personal injury or loss of life. -
Page 12: Manual Lighting Procedure
CAUTION: Do not try to adjust heating levels by using the equip- ment shutoff valve. Control Knob FB-3B Figure 20 - Burner Patterns Slightly press in control knob and turn coun- terclockwise to the LOW, ME- DIUM, or HIGH positions (see Figure 20). -
Page 13: Lighting Instructions
OPERATING HEATER Continued THERMOSTAT MODELS FBS-3C AND FBS-5C FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not fol- low these instructions exactly, a fire or explosion may result caus- ing property damage, personal injury or loss of life. A. -
Page 14: Inspecting Burner
INFRARED PROPANE/LP GAS HEATER OPERATING HEATER Continued THERMOSTAT CONTROL OPERATION The thermostatic control used on these models differs from standard thermostats. Standard thermostats simply turn on and off the burner. The thermostat used on this heater senses the room temperature. At times the room may exceed the set temperature. -
Page 15: Troubleshooting
TROUBLESHOOTING Note: For additional help, visit DESA International’s technical service web site at www.desatech.com. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM When ignitor button is pressed in, there is no spark at ODS/pilot ODS/pilot lights but flame goes out when... - Page 16 INFRARED PROPANE/LP GAS HEATER TROUBLESHOOTING Continued OBSERVED PROBLEM Burner(s) does not light after ODS/pilot is lit Delayed ignition of burner(s) Burner backfiring during combustion Burner plaque(s) does not glow Slight smoke or odor during initial operation Heater produces a clicking/ticking noise just after burner is lit or shut off White powder residue forming within burner box or on adjacent walls or furniture...
- Page 17 TROUBLESHOOTING Continued 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. Follow the gas supplier’s instructions.
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Page 18: Specifications
INFRARED PROPANE/LP GAS HEATER SPECIFICATIONS FB-3B Btu (Variable) 6,000/12,000/15,000 Type Gas Propane/LP Only Ignition Piezo Pressure Regulator Setting 10 W.C. Inlet Gas Pressure* (in. of water) Maximum 14" Minimum 11" Dimensions, Inches (H x W x D) Heater 23 x 18.75 x 7... -
Page 19: Replacement Parts
If they are unable to supply original replacement part(s), call DESA International’s Technical Service De- partment at 1-800-323-5190 for information. When contacting your dealer or DESA In- ternational, have ready: • your name • your address • model and serial numbers of your heater •... -
Page 20: Illustrated Parts Breakdown
INFRARED PROPANE/LP GAS HEATER ILLUSTRATED PARTS BREAKDOWN FB-3B (See Detail) ODS/Pilot Assembly Burner Assembly 105567... -
Page 21: Parts List
PARTS LIST This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 19 of this manual. FB-3B PART NO. FB-3B L98409-02 L98005-02 L98410-02 L98103-04 L98071-02 098514-01 L98071-07 L98072-01 L98817-01... - Page 22 INFRARED PROPANE/LP GAS HEATER ILLUSTRATED PARTS BREAKDOWN FB-5B TO "B1" TO "B2" TO "C1" Burner Assembly (See Detail) TO "C2" 27 28 ODS/Pilot Assembly 105567...
- Page 23 PARTS LIST This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 19 of this manual. FB-5B PART NO. FB-5B L98409-01 L98005-01 L98410-01 L98103-02 L98071-02 098514-01 L98071-07 L98072-01 L98817-01 L98034-01 L98411-01 L98028-01...
- Page 24 INFRARED PROPANE/LP GAS HEATER ILLUSTRATED PARTS BREAKDOWN FBS-3C (See Detail) 14-1 14-2 ODS/Pilot Assembly Burner Assembly 105567...
- 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 19 of this manual. FBS-3C PART NO. FBS-3B L98409-04 L98006-02 L98410-04 L98103-04 L98135-03 L99066-01 L98084-01 L98085-01 L98133-04 L98055-01 L98056-01 L98057-01...
- Page 26 INFRARED PROPANE/LP GAS HEATER ILLUSTRATED PARTS BREAKDOWN FBS-5B 14-1 14-2 ODS/Pilot Assembly (See Detail) TO "B1" TO "B2" TO "C1" Burner Assembly TO "C2" 105567...
- Page 27 PARTS LIST This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 19 of this manual. FBS-5C 14-1 14-2 105567 PART NO. FBS-5B DESCRIPTION L98409-03 Cabinet Assembly L98006-01 Front Panel Assembly L98410-03 Reflector Unit L98103-02...
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Page 28: Warranty Information
GLO-WARM VENT-FREE PROPANE/LP GAS HEATERS DESA International warrants this product to be free from defects in materials and components for two (2) years 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 of Sale or cancelled check must be presented.