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VENTED DECORATIVE GAS LOG HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
MPF24VNA, MPF24VPA,
MPF18VNA AND MPF18VPA
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;
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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 appliance is for installation only in a solid-fuel burning masonry or UL127 factory-built fireplace, constructed of noncombustible material and connected to a working flue. (See pa
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SAFETY INFORMATION WARNING: Do not use a blow- er insert, heat exchanger insert or WARNING: This product con- other accessory not approved for tains and/or generates chemicals use with this appliance. known to the State of California to cause cancer or birth defects WARNING: This appliance or other reproductive harm. is equipped for (natural or pro- pane/LP) gas. Field conversion WARNING: Keep flue open is not permitted. when operating unit. WARNING: Do not allow fans IMPORTANT: Rea
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9. Do not use a blower insert, heat exchanger SAFETY INFORMATION insert or other accessory not approved for use Continued with this log set. 10. The installation and provisions for combustion Keep the appliance area clear and ventilation air must conform with the Na- and free from combustible ma- tional Fuel Gas Codes, ANSI Z233.1/NFPA 54, terials, gasoline and other flam- Section 5.3, Air for combustion and Ventilation. mable vapors and liquids. 11. Do not run heater • where flammable liquid
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PRODUCT INSTALLATION IDENTIFICATION WARNING: A qualified ser- vice person must install heater. WARNING: Failure to posi- Follow all local codes. tion the parts in accordance with these diagrams or failure WARNING: Before installing to use only parts specifically in a solid fuel burning fireplace, approved with this appliance the chimney flue and firebox may result in property damage must be cleaned of soot, creo- or personal injury. sote, ashes and loose paint by a Ember qualified chimne
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Observe the smoke and be sure the vent is properly INSTALLATION drawing it up the chimney. If the smoke spills out Continued into the room, extinguish the flame and remove any CHECK GAS TYPE obstruction until proper venting is achieved. Use the correct gas type (natural or propane/LP) for The chimney flue damper must be fixed open to pro- your unit. If your gas supply is not correct, do not vide a minimum of 32 square inch of free air opening instal in fireplace. Call dealer where you bought
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INSTALLATION CAUTION: Never connect Continued propane/LP unit directly to the INSTALLING APPLIANCE propane/LP supply. This unit requires an external regulator WARNING: Special care is (not supplied). Install the external required if you are installing the regulator between the unit and the unit into a sunken fireplace. You propane/LP supply. must raise the fireplace floor to allow access to gas log controls. WARNING: Never connect natu- This will insure adequate air ral gas fireplace
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INSTALLATION A sediment trap traps moisture and contaminants. Continued This keeps them from going into heater controls. If sediment trap is not installed or is installed wrong, heater may not run properly. CAUTION: Use only new, black iron or steel pipe. Internally-tinned CAUTION: Avoid damage to copper tubing may be used in gas control. Hold gas control certain areas. Check your local with wrench when connecting it codes. Use pipe of 1/2" diameter to gas piping and/or fittings. or
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Pressure Testing Appliance Gas INSTALLATION Connections Continued 1. Open equipment shutoff valve (see Figure 8). 5. Correct all leaks at once. 2. Open main gas valve located on or near gas 6. Reconnect heater and equipment shutoff meter for natural gas or open propane/LP valve to gas supply. Check reconnected fit- supply tank valve. tings for leaks. 3. Make sure control knob of appliance is in the OFF position. Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa) ec a s o equ p en shu
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5. Wait five (5) minutes to clear out any gas. OPERATING APPLIANCE If you then smell gas, STOP! Follow "B" in FOR YOUR SAFETY the safety information in column 1. If you READ BEFORE LIGHTING don't smell gas, go on the next step. 6. Press in and turn control knob counter- clockwise to the PILOT position. WARNING: Keep flue open Press in control knob for five (5) seconds when operating unit. (see Figure 12). 7. With control knob pressed in, press and release WARNING: If you do not fol- ign
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OPERATING APPLIANCE INSPECTING BURNERS Continued Check pilot flame pattern and burner flame pat- terns often. NOTICE: You must light the pilot PILOT FLAME PATTERN before using the hand-held re- You can view the pilot light through the pilot view- mote control unit. See Lighting ing hole on the pilot bracket. This is located under Instructions on page 10. the front grate bar on the right side of the log set. Figure 15 shows a correct pilot flame pattern. After lighting, let pilot flame burn for a
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• Keep area around log set clean and clear of INSPECTING BURNERS debris. Continued • Periodically inspect the air mixer and burner If burner flame pattern is incorrect, as shown in tube for foreign matter blocking the air inlet Figure 18. and flame holes. • turn appliance off (see To Turn Off Gas to Ap- • Once every year a qualified agency or certified pliance, page 10) chimney sweep should examine and clean the • see Troubleshooting, page 13 venting system of the fireplace. SERVICE HINTS Dark
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TROUBLESHOOTING WARNING: Turn off appliance 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 POSSIBLE CAUSE REMEDY When ignitor button is pressed, 1. Ignitor electrode not con- 1. Reconnect ignitor cable there is no spark at ODS/pilot nected to ignitor cable 2.
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TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY ODS/pilot lights but flame goes 1. Control knob not fully 1. Press in control knob fully out when control knob is re- pressed in leased 2. Control knob not pressed in 2. After ODS/pilot lights, keep long enough control knob pressed in for 30 seconds 3. Safety interlock system has 3. Wait one minute for safety in- been triggered terlock system to reset. Repeat ignition operation 4. Equipment shutoff valve not 4. Fully open equipme
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TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Dark orange flame in burner dur- 1. Not enough air 1. Check burner(s) for dirt ing burner combustion and debris. If found, clean burner(s) (see Cleaning and Maintenance, page 12) 2. Gas regulator defective 2. Replace gas regulator 3. Control valve defective 3. Check manifold pressure on control valve. Replace if incorrect Slight smoke or odor during initial 1. Residues from manufacturing 1. Problem will stop after a few opera
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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. Fol- low the gas supplier’s instructions. • If you cannot reach your gas supplier, call the fire department. IMPORTANT: Operating appliance where impurities in air exist may create odors. Cleaning supplies, paint, paint remover, cigarette smoke, c
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SPECIFICATIONS This appliance has been design certified to ANSI ZZ1.60-2003 and CSA 2.26-2003 Decorative Gas Appliances for Installation in Solid Fuel Burning Fireplaces by OMNI Test Laboratories. MPF18VNA AND MPF24VNA MPF18VPA AND MPF24VPA • Variable Rating: 36,000/53,000 Btu/hr • Variable Rating: 35,000/45,000 Btu/hr • Gas Type: Natural Gas Only • Gas Type: Propane/LP Gas Only • Ignition: Piezo • Ignition: Piezo • Manifold Pressure: 3.5" W.C. • Manifold Pressure: 10" W.C. • Inlet Gas Pressur
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ILLUSTRATED PARTS BREAKDOWN MPF24VNA, MPF24VPA, MPF18VNA, MPF18VPA 17 16 15 7 1 9 8 6 13 5 10 3 14 12 2 4 1 1 18 www.desatech.com 114925-01C
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PARTS LIST This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 12 of this manual. KEY NO. PART NO. DESCRIPTION QTY. 1 111793-01 Grate • • 1 111808-02 Grate • • 1 2 111817-02 Flexible Tube • • • • 1 3 099998-01 Fan Switch • • • • 1 4 103784-02 Knob Extension (HI/LOW) • • • • 1 5 103784-01 Knob Extension (ON/OFF) • • • • 1 6 097159-04 Piezo Ignitor • • • • 1 7 114942-01 Heat Shield • • • • 1 8 111796-01 Val
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WARRANTY INFORMATION KEEP THIS WARRANTY Model Serial No. Date Purchased Always specify model and serial numbers when communicating with the factory. We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard written warranty. We make no other warranty, expressed or implied. LIMITED WARRANTY VENTED GAS LOG APPLIANCES DESA warrants this product to be free from defects in materials and components for four (4) years from the date of
