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Desa LMFP33NR(A) - page 1
Sav e this manual for future reference. For more information, visit www .desatech.com W ARNING: 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 a ...
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Desa LMFP33NR(A) - page 2
www .desatech.com 1 1 1604-01H 2 W ARNING: 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 . W ARNI ...
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Desa LMFP33NR(A) - page 3
www .desatech.com 1 1 1604-01H 3 SAFETY INFORMA TION WAR NING : Th is pr odu ct co n- ta ins an d/o r g ene rat es che mic als kno wn to the Stat e of Cali for nia to cau se can cer or birt h defe cts , or oth er rep rod uct ive ha rm. IMPORT ANT : Read this owner ’ s man ual ca ref ully and com ple tel y before trying to assemble, op- erate, or ...
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Desa LMFP33NR(A) - page 4
www .desatech.com 1 1 1604-01H 4 SAFETY INFORMA TION Continued 1. This ap plia nce is only for us e wi th t he type of ga s indi ca ted on the rat in g plat e. This app lian ce is n ot conv erti ble for use wit h ot her gas es. 2. Do not place propane/LP supply tank(s) in - side any structure. Locate propane/LP supply tank(s) outdoors (propane/LP u ...
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Desa LMFP33NR(A) - page 5
www .desatech.com 1 1 1604-01H 5 LOCAL CODES Install and use fireplace with care. Follow all local codes. In the absence of local codes, use the lat- est 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, ...
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Desa LMFP33NR(A) - page 6
www .desatech.com 1 1 1604-01H 6 PROVIDING ADEQUA TE VENTILA TION 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 T ight Construction 2. Unconfined Space 3. Confined ...
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Desa LMFP33NR(A) - page 7
www .desatech.com 1 1 1604-01H 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. __________ Bt u/ Hr ( ma xi mu m th e sp ac e ca n su pp or t) _________ Btu/ Hr ( actu al a moun t of Btu /Hr used ) ...
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Desa LMFP33NR(A) - page 8
www .desatech.com 1 1 1604-01H 8 INST ALLA TION 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 cir cula t ...
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Desa LMFP33NR(A) - page 9
www .desatech.com 1 1 1604-01H 9 MINIMUM CLEARANCE TO COMBUSTIBLE MA TERIALS T op Left and Bottom Right Sides and Rear 42" 16" 0" Figure 5 - Installing Hood to Firebox Figure 6 - Assembling Brass Trim Side Brass T rim Slot Mitered Edge Slot Shim Set Screws Adjusting Plate T rim Hanging Screws Assembled Brass T rim Hanging Notches on ...
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Desa LMFP33NR(A) - page 10
www .desatech.com 1 1 1604-01H 10 CONVENTIONAL FIREPLACE INST ALLA TION Conven tional install ation of this fireplace involves installing fireplace along with the corner , face, or cab inet man tel with hear th base acce ssor ies agai nst a wall in your home. Follow the instruc tions below to install the fireplace in this manner . Note: The inst ...
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Desa LMFP33NR(A) - page 11
www .desatech.com 1 1 1604-01H 1 1 Figure 12 - Inserting Fireplace Into Cabinet Mantel INST ALLA TION Continued ACTUAL FRAMING Height 32 3 / 8 " 33" Front Width 34 5 / 16 " 35 1 / 8 " Depth 16 1 1 / 16 " 17 3 / 4 " BUIL T -IN FIREPLACE INST ALLA TION Built-in installation of this fireplace involves installing fireplac ...
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Desa LMFP33NR(A) - page 12
www .desatech.com 1 1 1604-01H 12 Mantel Clearances for Built-In Installation If placi ng mante l above buil t-i n fire pla ce, you must mee t mini mum cle ara nce bet wee n mant el shel f and top of fireplace opening. NOT ICE: If your inst alla tio n does not meet the minimum clear- ances shown, you must do one of the following: • raise the ma ...
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Desa LMFP33NR(A) - page 13
www .desatech.com 1 1 1604-01H 13 Figure 18 - Minimum Mantel Clearances for Built-In Installation Supplied Firebox Hood Must Be Used at All Times Wire-mesh Screen Firebox Noncombustible Material May Project Off this Surface above the Firebox Hood Mantel Shelf 13" 16" 19" 21" 2 1 /2 " 6" 8" 10" Note: All verti ...
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Desa LMFP33NR(A) - page 14
www .desatech.com 1 1 1604-01H 14 For propane/LP units, the installer must supply an external regulator . The external regulator will reduce incoming gas pressure. Y ou must reduce inco ming gas pressu re to betwe en 11 and 14 inche s of water . If you do not reduce incoming gas pres - sure, heater regulator damage could occur . Install external re ...
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Desa LMFP33NR(A) - page 15
www .desatech.com 1 1 1604-01H 15 CONNECTING FIREPLACE TO GAS SUPPL Y Installation Items Needed • 5/16" hex socket wrench or nut-driver • Phillips screwdriver • seal ant (re sist ant to prop ane/ LP gas, not pr ovid ed) 1. Remove two screws that hold fireplace screen in place for shipp ing. Thes e screws are locat ed near top of screen. ...
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Desa LMFP33NR(A) - page 16
www .desatech.com 1 1 1604-01H 16 CHECKING GAS CONNECTIONS W ARNING: T est all gas pip- ing and connections, internal and external tonit, for leaks after installing or servicing. Correct all leaks at once. W ARNING: Never use an open flame to check for a leak. App ly a nonc orr os ive leak det ec- tion fluid to all joints. Bubbles forming show a ...
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Desa LMFP33NR(A) - page 17
www .desatech.com 1 1 1604-01H 17 INST ALLA TION Continued Figure 26 - Installing Rear and Middle Logs O F F P I L O T O N Middle Log (#1) Rear Log (#1) O F F P I L O T O N Front Log (#3) Figure 27 - Installing Front Log Pressure T esting Fireplace Gas Connections 1. Open equipment shutof f valve (see Figure 23, page 16). 2. Open main gas valve loc ...
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Desa LMFP33NR(A) - page 18
www .desatech.com 1 1 1604-01H 18 O F F P I L O T O N Models LMFP33PRA and LMFP33NRA 1. Place the base of the middle log (#1) in the U-shaped slots of the grate base. The cutout on the right of the middle log should fit over the burner (see Figure 29). Make sure the front of the middle log is resting on the tabs of the grate base and the cutout ar ...
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Desa LMFP33NR(A) - page 19
www .desatech.com 1 1 1604-01H 19 Figure 33 - Installing Batteries in Receiver Cover Receiver Slot 4 AA Batteries Battery Housing Backup Switch INST ALLING BA TTERIES FOR REMOTE RECEIVER AND HAND HELD REMOTE CONTROL Four AA batteries and three AAA batteries are required to operate this heater with the wireless hand-held remote control set. Four AA ...
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Desa LMFP33NR(A) - page 20
www .desatech.com 1 1 1604-01H 20 1. STOP! Read the safety information on page 19. 2 . Make sure equipment shutoff valve is fully open. 3. Set remote selector switch in the AUTO position (see Figure 35). 4. Press in and turn control knob clockwise to the OFF position (see Figure 35). 5. W ait five (5) minutes to clear out any gas. Then smell for g ...
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Desa LMFP33NR(A) - page 21
www .desatech.com 1 1 1604-01H 21 OPERA TING HEA TER Continued Figure 36 - Pilot (Propane/LP) Ignitor Electrode Pilot Burner Figure 37 - Pilot (Natural) Ignitor Electrode Pilot Burner 9. Sl igh tly pus h in and tu rn con trol kn ob co un- terc loc kwis e to the ON position. 10. Pr es s th e on /o ff k ey o n t he r em ote co ntro l to tu rn on ap p ...
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Desa LMFP33NR(A) - page 22
www .desatech.com 1 1 1604-01H 22 INSPECTING B URNERS Check pilot flame pattern and burner flame pat- terns often. PILOT FLAME P A TTERN Figure 39 shows a correct pilot flame pattern. Figure 40 shows an incorrect pilot flame pattern. The incorrect pilot flame is not properly heating the thermocouple. When the thermocouple cools, the heater wil ...
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Desa LMFP33NR(A) - page 23
www .desatech.com 1 1 1604-01H 23 BURNER PRIMAR Y AIR HOLES Air is drawn into the burner through the holes in the fitting at the burner entrance. These holes may become blocked with dust or lint. Periodically inspect these holes for any blockage and clean if needed. Blocked air holes will create soot. MAIN BURNER Pe ri od ical ly in sp ect a ll bu ...
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Desa LMFP33NR(A) - page 24
www .desatech.com 1 1 1604-01H 24 Figure 43 - Injector Holder On Outlet Burner Tube Burner T ube Primary Air Inlet Holes (Shape of Holes May V ary by Model) Figure 44 - Pilot Inlet Air Hole Burner T ube 1. Shut off the unit, including the pilot. Allow the unit to cool for at least thirty minutes. 2. Inspect burner, pilot, and primary air inlet hole ...
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Desa LMFP33NR(A) - page 25
www .desatech.com 1 1 1604-01H 25 POSSIBLE CAUSE 1 . Ignitor electrode not con- nected to ignitor cable 2. Ignitor cable pinched or wet 3. Piezo ignitor nut is loose 4. Broken ignitor cable 5. Bad piezo ignitor 6. Ignitor electrode positioned wrong 7. Ignitor electrode broken 1. Ga s sup ply turn ed of f or equ ip - ment sh utof f va lve clo sed 2. ...
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Desa LMFP33NR(A) - page 26
www .desatech.com 1 1 1604-01H 26 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 com- bustion Slight smoke or odor during initial operation POSSIBLE CAUSE 1. C o nt ro l kn ob n o t fu ll y pr es se d i ...
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Desa LMFP33NR(A) - page 27
www .desatech.com 1 1 1604-01H 27 TROUBLESHOO TING Continued OBS ERVE D P ROB LEM Moisture/con densation noticed on windows Heater produces a whistling noise when burners are lit White powder residue forming with in burne r box o r on adj ace nt walls or furniture Remote does not function Fireplace produces a clicking/ ticking noise just after burn ...
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Desa LMFP33NR(A) - page 28
www .desatech.com 1 1 1604-01H 28 TROUBLESHOO TING Continued W ARNING: 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. • I ...
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Desa LMFP33NR(A) - page 29
www .desatech.com 1 1 1604-01H 29 SPECIFICA TIONS LMFP33NR/A LMFP33PR/A Btu (V ariable) 23,000/33,000 23,000/33,000 T ype Gas Natural Gas Propane/LP Ignition Piezo Piezo Pressure Manifold 3.5" W .C. 7.9" W .C. Inlet Gas Pressure (in. of water) Maximum 10.5" 14" Minimum* 5.5" 1 1" Shipping W eight 122 lbs. 122 lbs. * Fo ...
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Desa LMFP33NR(A) - page 30
www .desatech.com 1 1 1604-01H 30 ILL USTRA TED P ARTS BREAKDOWN MODELS LMFP33PR, LMFP33PRA, LMFP33NR AND LMFP33NRA (SHOWN) 17 4 8 12 25 20 21 7 6 4 3 2 5 9 27 14 13 15 16 22 1 1 10 19 23 18 24 28 1b 1a 1c 1d 26 1b 1a 1c 1d 1e “A Models” ...
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Desa LMFP33NR(A) - page 31
www .desatech.com 1 1 1604-01H 31 KEY P ART NUMBER NO. LMFP33PR LMFP33PRA LMFP33NR LMFP33NRA DESCRIPTION QTY . 1a 1 1 1625-03 109072-01 1 1 1625-03 109072-01 Middle Log (#1) 1 1b 1 1 1625-04 109073-01 1 1 1625-04 109073-01 Rear Log (#2) 1 1c 1 1 1625-01 109074-01 1 1 1625-01 109074-01 Front Log (#3) 1 1d 1 1 1625-05 109075-01 1 1 1625-05 109075-01 ...
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Desa LMFP33NR(A) - page 32
www .desatech.com 1 1 1604-01H 32 ILL USTRA TED P ARTS BREAKDOWN FIREBOX LMFP33PR, LMFP33PRA, LMFP33NR AND LMFP33NRA 4 1 1 14 8 14 9 3 14 9 9 2 1 6 7 10 14 12 5 14 13 16 15 ...
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Desa LMFP33NR(A) - page 33
www .desatech.com 1 1 1604-01H 33 P ARTS LIST FIREBOX LMFP33PR, LMFP33PRA, LMFP33NR AND LMFP33NRA This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 29 of this manual. KEY NO. P ART NUMBER DESCRIPTION QTY . 1 101357-01 T op Outer Casing 1 2 ** Outer Casin ...
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Desa LMFP33NR(A) - page 34
www .desatech.com 1 1 1604-01H 34 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 Productsʼ Sales Department at 1-866-672-6040 for information. Y ou can also write to the address listed on ...
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Desa LMFP33NR(A) - page 35
www .desatech.com 1 1 1604-01H 35 ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _________________________________________ ...
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Desa LMFP33NR(A) - page 36
2701 Industrial Drive P .O. Box 90004 Bowling Green, KY 42102-9004 www .desatech.com 1 1 1604-01 Rev . H 07/04 NOT A UPC 111604 01 WARRANTY INFORMA TION KEEP THIS WARRANTY Model ______________________________ Serial No. ___________________________ Date Purchased ______________________ Always specify model and serial numbers when communicating with ...
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