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Desa EFS33NRB - page 1
Save this manual for future reference. For more information, visit www.desatech.com 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 ...
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Desa EFS33NRB - page 2
www.desatech.com 113132-01A 2 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 ...
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Desa EFS33NRB - page 3
www.desatech.com 113132-01A 3 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, oper- ate, or service this heater. Im- proper use of thi ...
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Desa EFS33NRB - page 4
www.desatech.com 113132-01A 4 SAFETY INFORMATION Continued 1. This appliance is only for use with the type of gas indicated on the rating plate. This appli- ance is not convertible for use with other gases. 2. Do not place propane/LP supply tank(s) in- side any structure. Locate propane/LP supply tank(s) outdoors (propane/LP units only). 3. If you ...
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Desa EFS33NRB - page 5
www.desatech.com 113132-01A 5 LOCAL CODES Install and use fireplace with care. Follow all lo- cal codes. In the absence of local codes, use the latest edition of The National Fuel Gas Code ANSI Z223.1/NFP A 54*. *A vailable from: American National Standards Institute, Inc. 1430 Broadway New Y ork, NY 10018 National Fire Protection Association, Inc. ...
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Desa EFS33NRB - page 6
www.desatech.com 113132-01A 6 AIR FOR COMBUSTION AND VENTILATION Continued PROVIDING ADEQUATE VENTILATION The following are excerpts from National Fuel Gas Code, ANSI Z223.1/NFP A 54, Section 5.3, Air for Combustion and V entilation. All spaces in homes fall into one of the three fol- lowing ventilation classifications: 1. Unusually Tight Construct ...
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Desa EFS33NRB - page 7
www.desatech.com 113132-01A 7 Example: Gas water heater _____________ Btu/Hr V ent-free fireplace _____________ Btu/Hr T otal _____________ Btu/Hr 4. Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used. ________ Btu/Hr (maximum the space can support) ________ Btu/Hr (actual amount of Btu/Hr used) Example: 51,200 B ...
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Desa EFS33NRB - page 8
www.desatech.com 113132-01A 8 INSTALLATION NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your primary heating system. Do not install this heater as your pri- mary heat source. If you have a central heating system, you may run system’s circulating blower while using heater. This will help circulate the he ...
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Desa EFS33NRB - page 9
www.desatech.com 113132-01A 9 INSTALLATION Continued Figure 6 - Assembling Perimeter Trim ASSEMBLING AND ATTACHING OPTIONAL PERIMETER TRIM (Included with Mantel Accessory) IMPORT ANT : If you are recessing the firebox in a wall, do not attach trim at this time. See Built-In Fir eplace Installation , pages 1 1 and 12. Note: The instructions below sh ...
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Desa EFS33NRB - page 10
www.desatech.com 113132-01A 10 INSTALLATION Continued 4. Place hearth base accessory against wall at installation location. Cut an access hole in hearth top to run flexible gas line to fireplace (see Figure 9). Make sure to locate access hole so cabinet mantel will cover it when installed. Note: Y ou can secure base to floor using wood screws. Coun ...
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Desa EFS33NRB - page 11
www.desatech.com 113132-01A 11 11. Carefully insert fireplace into cabinet mantel. Be careful not to scratch or damage hearth base, cabinet mantel, or any laminate trim on hearth base. Remove protective material from top of hearth base and from front of fireplace (if any). Note: Y ou can secure fireplace to hearth or floor . Open lower louver . Loc ...
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Desa EFS33NRB - page 12
www.desatech.com 113132-01A 12 INSTALLATION Continued 13" 16" 19" 21" 2 1 / 2 " 6" 8" 10" Minimum Non- Combustible Material Figure 16 - Minimum Mantel Clearances for Built-In Installation Mantel Shelf Note: All Vertical measurements are from top of fireplace opening to bottom of mantel shelf. Mantel Clearance ...
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Desa EFS33NRB - page 13
www.desatech.com 113132-01A 13 For propane/LP units, the installer must supply an external regulator . The external regulator will re- duce incoming gas pressure. Y ou must reduce in- coming gas pressure to between 1 1 and 14 inches of water . If you do not reduce incoming gas pres- sure, heater regulator damage could occur . Install external regul ...
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Desa EFS33NRB - page 14
www.desatech.com 113132-01A 14 ➞ ➞ INSTALLATION Continued CONNECTING FIREPLACE TO GAS SUPPLY Installation Items Needed • 5/16" hex socket wrench or nut-driver • Phillips screwdriver • sealant (resistant to propane/LP gas, not provided) 1. Remove fireplace screen. Remove two screws that hold fireplace screen in place for ship- ping. T ...
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Desa EFS33NRB - page 15
www.desatech.com 113132-01A 15 ON POSITION OFF POSITION 2. Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve lo- cated on or near gas meter for natural gas, or using compressed air . 3. Check all joints from gas meter to equipment shutoff valve for natural gas or propane/LP s ...
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Desa EFS33NRB - page 16
www.desatech.com 113132-01A 16 INSTALLATION Continued 3. Make sure control knob of fireplace is in the OFF position. 4 . Check all joints from equipment shutof f valve to gas control valve (see Figures 22 or 23, page 15). Apply noncorrosive leak de- tection fluid to all joints. Bubbles forming show a leak. 5. Correct all leaks at once. 6. Light fir ...
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Desa EFS33NRB - page 17
www.desatech.com 113132-01A 17 NOTICE: During initial operation of new fireplace, burning logs will give off a paper-burning smell. Open damper or window to vent smell. This will only last a few hours. 1. STOP! Read the safety information in column 1. 2 . Make sure equipment shutoff valve is fully open. 3. Set selector switch in OFF position. WARNI ...
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Desa EFS33NRB - page 18
www.desatech.com 113132-01A 18 7. With control knob pr essed in, press and re- lease ignitor button. This will light pilot. The pilot is attached to the front burner . If needed, keep pressing ignitor button until pilot lights. Note: If pilot does not stay lit, contact a qualified service person or gas supplier for repairs. Until r epairs are made, ...
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Desa EFS33NRB - page 19
www.desatech.com 113132-01A 19 Figure 31 - Setting the Selector Switch, Control Knob, and Flame Adjustment Knob for Hand-Held Remote Operation Selector Switch in Remote Position (Optional Hand- Held Remote Control) Flame Adjustment Knob Control Knob in On Position O F F P I L O T O N L O I H ON OFF REMOTE OPERATING FIREPLACE Continued ON/OFF MODEL ...
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Desa EFS33NRB - page 20
www.desatech.com 113132-01A 20 2. The receiver continuously r eceives signals from the hand-held r emote to control the r oom temperature. If the hand-held remote is misplaced, obstructed, or for any reason cannot transmit to the receiver , the receiver will shut off the fireplace after 8 minutes. Ke y Pad Loc k Feature This feature allows the user ...
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Desa EFS33NRB - page 21
www.desatech.com 113132-01A 21 Figure 36 - Correct Burner Flame Pattern Figure 37 - Incorrect Burner Flame Pattern Yellow Tipping At Top of Blue Flame INSPECTING BURNERS Continued CLEANING AND MAINTENANCE WARNING: Turn off fireplace and let cool before cleaning. CAUTION: You must keep control areas, burner, and cir- culating air passageways of fire ...
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Desa EFS33NRB - page 22
www.desatech.com 113132-01A 22 6. In case any large clumps of dust have now been pushed into the burner repeat steps 3 and 4, page 21. Clean the pilot assembly also. A yellow tip on the pilot flame indicates dust and dirt in the pilot as- sembly . There is a small pilot air inlet hole about two inches from where the pilot flame comes out of the pil ...
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Desa EFS33NRB - page 23
www.desatech.com 113132-01A 23 TROUBLESHOOTING WARNING: Turn off 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. POSSIBLE C ...
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Desa EFS33NRB - page 24
www.desatech.com 113132-01A 24 TROUBLESHOOTING Continued 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 one or both burners Burner backfiring during combustion Slight smoke or odor during ini- tial operation REMEDY 1. Press in control knob fully 2 ...
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Desa EFS33NRB - page 25
www.desatech.com 113132-01A 25 OBSERVED PROBLEM Moisture/condensation noticed on windows Heater produces a whistling noise when burners are lit White powder residue forming within burner box or on adjacent walls or furniture Remote does not function (GHRC and GHRCTA only) REMEDY 1. Refer to Air for Combustion and V entilation requirements (page 5) ...
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Desa EFS33NRB - page 26
www.desatech.com 113132-01A 26 POSSIBLE CAUSE 1. Heater burning vapors from paint, hair spray , glues, cleaners, chemicals, new car - pet, etc. (See IMPOR T ANT statement on page 25) 2. Low fuel supply (propane/LP only) 3 . Gas leak. See Warning statement on page 25 1 . Not enough fresh air is available 2. Low line pressure 3 . ODS/pilot is partial ...
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Desa EFS33NRB - page 27
www.desatech.com 113132-01A 27 REPLACEMENT PARTS Note: Use only original replacement parts. This will protect your warranty coverage for parts re- placed under warranty . PARTS UNDER WARRANTY Contact authorized dealers of this product. If they can’t supply original replacement part(s), call DESA Heating Products’ T echnical Service De- partment ...
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Desa EFS33NRB - page 28
www.desatech.com 113132-01A 28 ILLUSTRATED PARTS BREAKDOWN LOG BASE ASSEMBLY MODELS EFS33NRB, VSGF33NRB, EFS33PRB AND VSGF33PRB 21 17 23 20 13 22 16 3 6 7 6 6 2 11 10 1c 1a 1b 4 11 15 8 14 9 24 5 12 26 4 4 4 4 18 25 27 19 15 ...
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Desa EFS33NRB - page 29
www.desatech.com 113132-01A 29 PARTS LIST This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 27 of this manual. P ART NUMBER KEY EFS33NRB EFS33PRB NO . VSGF33NRB VSGF33PRB DESCRIPTION QTY . 1a 110881-04 110881-04 F ront Log 1 1b 110881-05 110881-05 Middle ...
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Desa EFS33NRB - page 30
www.desatech.com 113132-01A 30 ILLUSTRATED PARTS BREAKDOWN FIREPLACE MODELS EFS33NRB, VSGF33NRB, EFS33PRB AND VSGF33PRB 1 2 3 16 4 6 12 18 10 10 7 13 16 16 16 7 17 14 5 16 16 15 8 9 16 11 11 11 ...
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Desa EFS33NRB - page 31
www.desatech.com 113132-01A 31 PARTS LIST FIREPLACE MODELS EFS33NRB, VSGF33NRB, EFS33PRB AND VSGF33PRB This list contains replaceable parts used in your fireplace. When ordering parts, follow the instruc- tions listed under Replacement Parts on page 27 of this manual. KEY NO . P ART NUMBER DESCRIPTION QTY . 1 101357-01 T op Outer Casing 1 2 103207- ...
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Desa EFS33NRB - page 32
www.desatech.com 113132-01A 32 ACCESSORIES NOTICE: All accessories may not be available for all fireplace models. Purchase these fireplace accessories from your lo- cal dealer . If they can not supply these accessories, call DESA Heating Products at 1-866-672-6040 for information. Y ou can also write to the address listed on the back page of this m ...
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Desa EFS33NRB - page 33
www.desatech.com 113132-01A 33 ACCESSORIES Continued CABINET MANTEL AND FULL HEARTH BASE GMC90F Series - Oak Finished GMC91U Series - Unfinished Birch GMC92F Series - Cherry Finished Birch For all models. Mantel features columns, mold- ings, fluting and medallion. T ree-sided perimeter trim included. Dimensions (WxHxD): 56" x 50" x 24&quo ...
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Desa EFS33NRB - page 34
www.desatech.com 113132-01A 34 ACCESSORIES Continued RECEIVER AND HAND-HELD THERMOSTAT REMOTE CONTROL KIT - GHRCTB For all Remote-Ready Models. Allows the gas log heater to be operated in a manually or ther- mostatically controlled mode. Y ou can turn the gas log heater on and off without ever leaving the com- fort of your easy chair . RECEIVER AND ...
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Desa EFS33NRB - page 35
www.desatech.com 113132-01A 35 ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________ ...
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Desa EFS33NRB - page 36
2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 www.desatech.com 113132-01 Rev. A 02/04 NOT A UPC 113132 01 WARRANTY INFORMATION KEEP THIS WARRANTY Model ____________________________ Serial No. _________________________ Date Purchased ____________________ Always specify model and serial numbers when communicating with the factory ...
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