Desa MVO24VNA User's Manual
Contents
1. 2 Cap off open end of gas pipe where equipment shutoff valve was connected 8 www desatech com 114924 01B INSTALLATION Continued 3 Pressurize supply piping system by either opening propane LP supply tank valve for propane LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air 4 Check all joints of gas supply piping system Apply noncorrosive leak detection fluid to all joints Bubbles forming show a leak 5 Correct all leaks at once Reconnect heater and equipment shutoff valve to gas supply Check reconnected fit tings for leaks Test Pressures Equal To or Less Than 1 2 PSIG 3 5 kPa 1 Close equipment shutoff valve see Figure 8 2 Pressurize supply piping system by either opening propane LP supply tank valve for propane LP gas or opening main gas valve located 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 supply to equipment shutoff valve for propane LP see Figure 9 or 10 Apply noncorrosive leak detection fluid to all joints Bubbles form ing show a leak 4 Correct all leaks at once Equipment po t Open Shutoff Valve Gr Closed Figure 8 Equipment Shutoff Valve Propane LP Supply Tank 74 Equipment ZA Shutoff Valve 3 Control Valve Locatio2. Figure 6 External Regulator with Vent Pointing Down 114924 01B www desatech com INSTALLATION Continued AX CAUTION Use only new black ironorsteel pipe Internally tinned copper tubing may be used in certain areas Check your local codes Use pipe of 1 2 diameter or greater to allow proper gas vol ume to heater If pipe is too small undue loss of volume will occur Installation must include an equipment shutoff valve union and plugged 1 8 NPT tap Locate NPT tap within reach for test gauge hook up NPT tap must be upstream from log set see Figure 7 IMPORTANT Install equipment shutoff valve in an accessible location The equipment shutoff valve is for turning on or shutting off the gas to the appliance Apply pipe joint sealant lightly to male NPT threads This will prevent excess sealant from going into pipe Excess sealant in pipe could result in clogged heater valves Ay WARNING Use pipe joint sealant that is resistant to liquid petroleum LP gas We recommend that you install a sediment trap in supply line as shown in Figure 7 Locate sediment trap where it is within reach for cleaning Install in piping system between fuel supply and appliance 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 If sediment trap is not installed or is installed wrong heater may not run pro
3. Continued INSTALLING APPLIANCE AX WARNING Special care is required if you are installing the unit into a sunken fireplace You must raise the fireplace floor to allow access to gas log controls This will insure adequate air flow and guard against sooting Raise the fireplace floor using noncombustible material A CAUTION Never connect propane LP unit directly to the propane LP supply This unit re quires an external regulator not supplied Install the external regulator between the unit and the propane LP supply ARWARNING Neverconnectnatu ral gas fireplace to private non util ity gas wells This gasis commonly known as wellhead gas AX CAUTION Do not pick up ap pliance assembly by logs This could damage unit Only handle assembly by grate Installation Items Needed Before installing heater make sure you have the items listed below IMPORTANT Make sure appliance is level If unit is not level it will not work properly Center the appliance in the fireplace Make certain the grate front feet sit inside the front edge of the fireplace and that there is adequate clearance around the appliance for access and operation Note The installation of appliances designed for manufactured home U S only or mobile home installation must conform with the standard CAN CSA Z240 Mobile Housing in Canada or with the Manufactured Home Construction and Safety Standard Title
4. Checking Gas Connections page 8 Replace control valve or gas control Gas odor during combustion Foreign matter between control valve and burner 2 Gas leak See Warning statement at top of page Take apart gas tubing and remove foreign matter Locate and correct all leaks see Checking Gas Connections page 8 www desatech com 114924 01B SERVICE HINTS When Gas Pressure is Too Low e pilot will not stay lit burners will have delayed ignition e propane LP gas supply may be low You may feel your gas pressure is too low If so contact your local propane LP or natural gas supplier TECHNICAL SERVICE You may have further questions about installation operation or troubleshooting If so contact DESA s Technical Service Department at 1 866 672 6040 When calling please have your model and serial numbers of your heater ready You can also visit DESA s technical services web site at www desatech com REPLACEMENT PARTS Note Use only original replacement parts This will protect your warranty coverage for parts replaced under warranty PARTS UNDER WARRANTY Contact authorized dealers of this product If they can t supply original replacement part s call DESA s Technical Service Department at 1 866 672 6040 When calling DESA have ready e your name and address model and serial numbers of your log set e how log set was malfunctioning e type of gas used prop
5. If you cannot reach your gas supplier call the fire department Use only your hand to push in or turn gas control knob Never use tools If the knob will not push in or turn by hand do not try to repair it call a qualified technician Force or attempted repair may result in a fire D Do not use this appliance if any part has been 1 Ea Control Knob T Auro under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water LIGHTING INSTRUCTIONS MO STOP Read the safety information col umn 1 Make sure switch is in OFF position Be sure gas line shut off valve is OPEN Press in and turn control knob clockwise to the OFF position see Figure 12 Note Knob cannot be turned from PILOT to OFF unless knob is pushed in slightly DO NOT FORCE Wait five 5 minutes to clear out any gas If you then smell gas STOP Follow B in the safety information in column 1 If you don t smell gas go on the next step Press in and turn control knob counter clockwise gt to the PILOT position Press in control knob for five 5 seconds see Figure 12 With control knob pressed in press and release ignitor button This will light pilot 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 repai
6. appliance and let cool before servicing Only a qualified service person should service and repair heater A 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 there is no spark at ODS pilot 1 Ignitor electrode not con nected to ignitor cable 2 Ignitor cable pinched or wet Broken ignitor cable Bad piezo ignitor Ignitor electrode positioned wrong or broken nA Bw 1 nA Bw Reconnect ignitor cable Free ignitor cable if pinched by any metal or tubing Keep ignitor dry Replace ignitor cable Replace piezo ignitor Replace pilot assembly for remote ready units replace ignitor electrode for variable manually controlled units When ignitor button is pressed in there is spark at ODS pilot but no ignition 1 Gas supply turned off or equipment shutoff valve closed 2 Control knob not in PILOT position 3 Control knob not pressed in while in PILOT position 4 Air in gas lines when in stalled 5 Depleted gas supply pro pane LP only 6 ODS pilot is clogged 7 Gas regulator setting is in correct Turn on gas supply or open equipment shutoff valve Turn control knob to PILOT position Press in control knob while in PILOT position Continue hol
7. com 11 INSPECTING BURNERS Check pilot flame pattern and burner flame pat terns often PILOT FLAME PATTERN You can view the pilot light through the pilot view ing hole on the pilot bracket This is located under the front grate bar on the right side of the log set Figure 15 shows a correct pilot flame pattern Figure 16 shows an incorrect pilot flame pattern The incorrect pilot flame is not touching the ther mocouple This will cause the thermocouple to cool When the thermocouple cools the appliance will shut down If pilot flame pattern is incorrect as shown in Figure 16 e turn appliance off see To Turn Off Gas to Appliance page 11 e see Troubleshooting page 13 Note The pilot flame on natural gas units will have a slight curve but flames should be blue and have no yellow or orange color Figure 15 Correct Pilot Flame Pattern Your pilot may vary from pilots shown Figure 16 Incorrect Pilot Flame Pattern Your pilot may vary from pilots shown BURNER FLAME PATTERN Figure 17 shows correct burner flame pattern NOTICE Do not mistake orange flames with yellow tipping Dirt or other fine particles are burned by appliance causing brief patches of orange flame Yellow Flames with Orange Streaks Figure 17 Correct Burner Flame Pattern If burner flame pattern is incorrect as shown in Figure 18 e turn appliance off see To Turn Off Gas to Ap pliance page 10
8. 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 page 6 for minimum flue opening WARNING This is a gas fired heater It uses air oxy gen from the room in which it is installed Provisions for adequate combustion and ventilation air must be provided Refer to the National Fuel Gas Codes ANSI Z233 1 NFPA 54 Section 5 3 Air for Combustion and Ventilation This appliance may be installed in an aftermarket per manently located manufactured mobile home where not prohibited by local codes This appliance is only for use with the type of gas indi cated on the rating plate This appliance is not convert ible for use with other gases Aftermarket Completion of sale not for purpose of resale from the manufacturer State of Massachusetts The installation must be made by a licensed plumber or gas fitter in the Commonwealth of Massachusetts TABLE OF CONTENTS Safety Information 3 Cleaning and Maintenance cccceeeees 12 Local Codes 4 Troubleshooting Product Identification 5 Service Hints 0000 Unpacking 5 Technical Service as Product FOatures iciecsceecccsccencccesteanvecsceenuaeanins 5 Replacement Parts cccesseeeseeeeeeeeeeeeees WS TAN AU OW ocio 5 PR
9. gewerkte By Vanguard VENTED DECORATIVE GAS LOG HEATER OWNER S OPERATION AND INSTALLATION MANUAL We recommend that our LA A products be installed and AS Y serviced by professionals who z 1 are certified in the U S by NFI National Fireplace Institute INSTITUTE y e Ghz www nficertified org MVO24VNA MVO24VPA MVO18VNA AND MVO18VPA 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 ofthis 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 supplierfrom 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 Save this manual for future reference For more information visit www desatech com 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
10. log curing 1 Problem will stop after a few hours of operation Produces a whistling noise when burners are lit 1 Turning control knob to HI position when burners are cold 2 Airis gas line 3 Air passageways on heater blocked 4 Dirty or partially clogged burner orifice s 1 Turn control knob to LO position and let warm up for a minute 2 Operate burners until air is removed from line Have gas line checked by local natural or propane LP gas company 3 Observe minimum installation clearances see page 6 4 Clean burners see Cleaning and Maintenance page 12 or replace burner orifice s White powder residue forming within burner box or on adjacent walls or furniture 1 When heated vapors from furniture polish wax carpet cleaners etc turn into white powder residue 1 Heat turned off when using furniture polish wax carpet cleaners or similar products 114924 01B www desatech com TROUBLESHOOTING Continued A WARNING If you smell gas e Shut off gas supply e Do not try to light any appliance e Do not touch any electrical switch do not use any phone in your building e Immediately call your gas supplier from a neighbor s phone Fol low the gas supplier s instructions e 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 remove
11. on their edge not flat along the top of the burner pan This aids in directing flames from the burner through the ember bed Note Too many embers or embers placed flat along burner pan can suppress the flames 114924 01B www desatech com 9 i FOR YOUR SAFETY RE INSTALLATION Continued When unit is lit check flames for random appear ance and ember bed glowing red orange in color see Burner Flame Pattern page 12 If this is not happening either add remove or reposition loose embers IMPORTANT Turn unit off and let cool before repositioning loose embers Figure 11 Placement of Embers OPERATING APPLIANCE AD BEFORE LIGHTING AX WARNING Keep flue open when operating unit Ad WARNING If you do not fol low these instructions exactly a fire or explosion may result causing property damage per sonal injury or loss of life A This appliance has a pilot which must be lighted with a piezo ignitor When lightning the pilot follow these instructions exactly BEFORE LIGHTING smell all around the appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor WHAT TO DO IF YOU SMELL GAS e Do not try to light any appliance e Do not touch any electric switch do not use any phone in your building e Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions e
12. www desatech com a7 ILLUSTRATED PARTS BREAKDOWN MVO24VNA MVO24VPA MVO18VNA MVO18VPA 18 www desatech com 114924 01B PARTS LIST This list contains replaceable parts used in your heater When ordering parts follow the instructions listed under Replacement Parts on page 17 of this manual KEY PART NUMBER NO MVO24VNA MVO24VPA MVO18VNA MVO18VPA DESCRIPTION QTY 111793 01 111793 01 111808 02 111808 02 Grate 111817 02 111817 02 111817 02 111817 02 Flexible Tube 099998 01 099998 01 099998 01 099998 01 Fan Switch 103784 02 103784 02 103784 02 103784 02 Knob Extension HI LOW 103784 01 103784 01 103784 01 103784 01 Knob Extension ON OFF 097159 04 097159 04 097159 04 097159 04 Piezo Ignitor 114942 01 114942 01 114942 01 114942 01 Heat Shield 111796 01 111796 01 111796 01 111796 01 Valve Bracket 111807 01 111807 02 111807 01 111807 02 Valve 112376 01 103778 01 112376 01 103778 01 Pilot Assembly 111828 01 111818 01 111828 01 111828 01 Brass Fitting 114930 02 114930 02 114930 01 114930 01 Pilot Bracket 26205 23109 26205 23109 Gas Orifice ANOAARWHNH 114936 01 114936 01 114936 02 114936 02 Ventury we x e e Burner 114933 02 114933 02 114933 01 114933 01 Plate Burner xx xx xx Log Set PARTS AVAILABLE NOT SHOWN 100563 01 100563 01 100563 01 100563 01 Warning Plate 103877 01 103877 01 103877 01 103877 01 Lighting Instruction 100639 01 100639 01 100639 01 100639
13. 01 Caution Decal 111228 02 111228 02 111228 02 111228 02 1 8 Flex Gas Line 114928 11 114928 12 114928 09 114928 10 Rating Plate GA6060 GA6060 GA6060 GA6060 Lava Rock 115597 01 115597 01 115597 01 115597 01 Log Repair Kit 112799 01 112799 01 112779 01 112799 01 Ember Flakes Kit 901242 01 901242 01 901242 01 901 242 01 Damper Clamp Not a field replaceable part 114924 01B www desatech com 19 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 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 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 Authorized Service Center Warranty part s MUST be obtai
14. 24 CFR Part 3280 in the United States or when such a standard is not applicable ANSI NCSBCSA225 1 NFPASOIA Manufactured Home Installations Standard CONNECTING TO GAS SUPPLY approved flexible gas hose and fittings supplied with appliance if allowed by local codes external regulator propane LP models only piping check local codes sealant resistant to propane LP gas equipment shutoff valve test gauge connection sediment trap tee joint pipe wrench ACSA design certified equipment shutoff valve with 1 8 NPT tap is an acceptable alternative to test gauge connection Purchase the optional CSA design certified equipment shutoff valve from your dealer See Accessories page 17 For propane LP units the installer must supply an external regulator The external regulator will reduce incoming gas pressure You must reduce incoming gas pressure to between 11 and 14 inches AX WARNING Aqualified service person mustconnectheaterto gas supply Follow all local codes of water If you do not reduce incoming gas pres sure control valve damage could occur Install external regulator with the vent pointing down as shown in Figure 6 Pointing the vent down protects it from freezing rain or sleet AX WARNING This appliance requires a3 8 NPT National Pipe Thread inlet connection to the control valve Propane LP Supply Tank External Regulator Vent Pointing Down
15. Burner does not light after ODS pilot is lit Delayed ignition of burner Inlet gas pressure is too low Burner orifice s clogged Burner orifice s diameter too small Remote selector in OFF position Remote use only Wire disconnected from gas control Remote use only Manifold pressure is too low Burner orifice s clogged Contact local natural or propane LP gas company Clean burner s see Cleaning and Maintenance page 12 or replace burner orifice s Replace burner orifice s Put remote selector in ON position See Wiring Diagram page 11 Contact local natural or propane LP gas company Clean burner s see Cleaning and Maintenance page 12 Burner backfiring during com bustion Burner orifice is clogged or damaged Damaged burner Gas regulator defective Clean burner see Cleaning and Maintenance page 12 or replace burner orifice Replace damaged burner Replace gas regulator www desatech com 114924 01B TROUBLESHOOTING OBSERVED PROBLEM Dark orange flame in burner dur ing burner combustion Continued POSSIBLE CAUSE 1 Not enough air 2 Gas regulator defective REMEDY 1 Check burner s for dirt and debris If found clean burner s see Cleaning and Maintenance page 12 2 Replace gas regulator Slight smoke or odor during initial operation 1 Residues from manufacturing processes and
16. CCOSSOMOS asc iii Operating Appliance sssi 10 Illustrated Parts Breakdown and Parts List Wining DiaQramize c0 tyeiete cess loans 11 Warranty Information Inspecting Burners ccceseeeeeeeeteteeeeeeeeeeee 12 2 www desatech com 114924 01B 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 Ad WARNING Keep flue open when operating unit IMPORTANT Read this owner s manual carefully and completely before trying to assemble operate orservice this logset Improperuse of this log set can cause serious injury or death from burns fire explosion electrical shock and carbon monoxide poisoning A DANGER Carbon monoxide poisoning may lead to death Carbon Monoxide Poisoning Early signs of carbon monoxide poisoning resemble the flu with head aches dizziness or nausea If you have these signs the log set may not be working properly Get fresh air at once Have log set serviced Some people are more affected by carbon monoxide than others These include pregnant women people with heart or lung disease or anemia those under the influence of alcohol and those at high altitudes Natural amp LP Gas Natural amp LP gas are odorless An odor making agent is added to the gas The odor helps you detect a gas leak However the odor added to the gas can f
17. RNING This appliance is equipped for natural or pro pane LP gas Field conversion is not permitted INSTALLATION AND CLEARANCES Figure 2 shows technical information regarding the installation of your gas log set Please make sure all specifications shown are applicable before installation is attempted SPECIFICATIONS W C FUEL INLET MANIFOLD PRESSURE PRESSURE Min Max NG 7 10 5 3 5 LP 14 14 10 Figure 2 Technical Information Chart FLUE OPENING SPECIFICATIONS Note This vented appliance must be installed only in a solid fuel burning or UL127 factory built fire place constructed of noncombustible material and connected to a working flue The fireplace chimney must have a permanent vent opening to outside with minimum openings shown in Figure 3 LOG SIZING REQUIREMENTS MINIMUM FIREBOX SIZE LOG FRONT REAR MIN FLUE SIZE HEIGHT DEPTH WIDTH WIDTH SIZE 18 20 14 25 20 5 6 5 24 20 14 29 24 5 6 5 Measured at 14 depth Figure 3 Sizes and Clearances VENTING SPECIFICATIONS FOR INSTALLATION The fireplace chimney flue and vent must be draft ing properly To check the vent for proper drafting Light a tightly rolled newspaper on one end and place it at the inside front edge of the fireplace Observe the smoke and be sure the vent is properly drawing it up the chimney If the smoke spills out into the room ex
18. ade Gas may be present even though no odor exists Make certain you read and understand all warnings Keep this manual for reference It is your guide to safe and proper operation of this log set L WARNING Do not place log scraps or lava rocks on burner WARNING Do notuse a blow er insert heatexchangerinsertor other accessory notapproved for use with this appliance Ay WARNING Any change to this log set or its controls can be dangerous AX WARNING This appliance is equipped for natural or pro pane LP gas Field conversion is not permitted Ah WARNING Do not allow fans to blow directly into the fireplace Avoid any drafts that alter burner flame patterns A WARNING Installed decora tive glass door enclosures must be fully opened when operating this gas appliance Due to high temperatures the appliance should be located out of traffic and away from furniture and draperies Do not place clothing or other flammable material on or near the appliance Never place any objects on the appliance Appliance assembly becomes very hot when running Keep children and adults away from hot surfaceto avoid burns or clothing ignition Appliance will remain hot for a time after shutdown Allow surface to cool before touching Carefully supervise young chil dren when they are in the room with appliance When using hand held remote accessory k
19. ane LP or natural gas e purchase date Usually we will ask you to return the part to the factory PARTS NOT UNDER WARRANTY Contact authorized dealers of this product If they can t supply original replacement part s call DESA at 1 866 672 6040 for referral information When calling DESA have ready e model number of your log set e the replacement part number ACCESSORIES Purchase these appliances from your local dealer Tf they can not supply these accessories call DESA at 1 866 672 6040 for referral information You can also write to the address listed on the back page of this manual EQUIPMENT SHUTOFF VALVE GA5010 Equipment shutoff valve with 1 8 NPT tap Fits 1 2 pipe FIREPLACE HOOD Black GA6050 Brass GA6052 Antique Brass GA6053 Helps deflect heat away from mantel or wall above fireplace Fits opening 28 to 48 wide DAMPER CLAMP GA6080 Not Shown Permanently opens chimney flue damper for vented operation LAVA ROCK GA6060 Not Shown Order when additional rock is desired 1 8 Ib bag RECEIVER AND HAND HELD REMOTE CONTROL KIT GHRCB Allows the gas log heater to be turned on and off using a hand held remote control CLEANING KIT GCK Not Shown Your vented gas appliance requires regular cleaning and maintenance to prevent performance problems This kit gives you the tools and instructions to make it easy to clean all critical areas of your appliance 114924 01B
20. anties or exclusion or limitation on damages may not apply to you This warranty gives you specific legal rights and you may also have other rights that vary from state to state For information about this warranty write DESA 2701 Industrial Drive P O Box 90004 Bowling Green KY 42102 9004 www desatech com 114924 01 Rev B NOT A UPC 01 05
21. ation Do not run heater e where flammable liquids or vapors are used or stored e under dusty conditions Do not burn solid fuel in the fireplace after installing the log set Do not use this log set to cook food or burn paper or other objects Log set becomes very hot when in use Keep children and adults away from hot surface to avoid burns or clothing ignition Log set will remain hot for a time after shutdown Allow surface to cool before touching Carefully supervise young children when they are in the room with the log set Do not use heater if any part has been exposed to or under water Immediately call a qualified service technician to inspect the room heater and to replace any part of the control system and any gas control which has been under water Turn log set off and let cool before servicing installing or repairing Only a qualified service person should install service or repair log set Provide adequate clearances around air openings LOCAL CODES Install and use log set with care Follow all local codes In the absence of local codes use the latest edition of the National Fuel Gas Code ANSI Z223 1 NFPA 54 Available from American National Standards Institute Inc 1430 Broadway New York NY 10018 National Fire Protection Association Inc Battery march park Quincy MA 02269 www desatech com 114924 01B PRODUCT IDENTIFICATION AX WARNING Failure to position the pa
22. d LO Flip AUTO OFF ON switch to AUTO Slide the selector switch to the REMOTE position see Figure 13 Note The burner may light if hand held remote was on when selector switch was last turned off You can now turn the burner on and off with the hand held remote control unit md Ole O Al gt IX Selector Switch in Control Knob Piezo Flame REMOTE Position lani Adjustment gnitor Knob Figure 13 Setting the Selector Switch Control Knob and Flame Adjustment Knob for Remote Operation IMPORTANT Do not leave the selector switch in the REMOTE or ON position when the pilot is not lit This will drain the battery ON OFF SERIES MODEL GHRCB Hold the control button on the hand held remote until burner turns on Hold the control button again until burner turns off see Figure 14 To Lock press both buttons on hand held remote control until light stops flashing Hand held remote control is now locked If the fire is on it will be turned off automatically In the locked state the light will not light up when any button is pressed To Unlock press both buttons together on hand held remote control until the light stops flashing The hand held remote is now unlocked Control Button Turns Burner On and Off Figure 14 On Off Hand Held Remote Control Unit GHRCB WIRING DIAGRAM When Using Remote To Remote Receiver Thermopile 114924 01B www desatech
23. ding down con trol knob Repeat igniting op eration until air is removed Contact local propane LP gas company Clean ODS pilot see Cleaning and Maintenance page 12 or replace ODS pilot assembly Replace gas regulator 114924 01B www desatech com TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE ODS pilot lights but flame goes 1 out when control knob is re REMEDY Control knob not fully 1 Press in control knob fully pressed in leased 2 Control knob not pressed in long enough Safety interlock system has been triggered Equipment shutoff valve not fully open Pilot flame not touching thermocouple which allows thermocouple to cool causing pilot flame to go out This problem could be caused by one or both of the following A Low gas pressure B Dirty or partially clogged ODS Pilot Thermocouple connection loose at control valve Thermocouple damaged Control valve damaged Ze After ODS pilot lights keep control knob pressed in for 30 seconds Wait one minute for safety in terlock system to reset Repeat ignition operation Fully open equipment shutoff valve A Contact local natural or propane LP gas company B Clean ODS pilot see Cleaning and Maintenance page 12 or replace ODS pilot assembly Hand tighten until snug then tighten 1 4 turn more Replace pilot assembly Replace control valve
24. e ashes and loose paint by a qualified chimney cleaner Creo sote will ignite if highly heated A dirty chimney flue may create and distribute soot within the house Inspect chimney flue for damage If damaged repair flue damper before operating appliance A CAUTION This heater creates warm air currents These currents move heat to wall surfaces next to heater Installing heater next to vinyl or cloth wall coverings or operating heater where impurities such as but not limited to to bacco smoke aromatic candles cleaning fluids oil or kerosene lamps etc in the air exist may discolor walls or cause odors NOTICE Installation service and repair of this appliance must be performed by a qualified installer service agency company or gas supplier experienced with this type of gas appliance Only factory authorized components listed in these instructions may be used in accordance with the manufacturer s instructions and all codes and requirements of the authority having jurisdiction Any modifications to or use of unauthorized components or accessory items will void the manufacturer s warranty andmay result in a hazardous condition www desatech com INSTALLATION Continued CHECK GAS TYPE Use the correct gas type natural or propane LP for your unit If your gas supply is not correct do not instal in fireplace Call dealer where you bought the appliance for proper type of appliance AX WA
25. e see Troubleshooting page 13 Dark Orange Flames 2 gt Figure 18 Incorrect Burner Flame Pattern CLEANING AND MAINTENANCE Ay WARNING Turn off the ap pliance and allowto cool before cleaning AX CAUTION You must keep control areas burners and cir culating air passageways of fire place clean Inspect these areas of fireplace before each use Have fireplace and chimney if appli cable inspected yearly by a quali fied service person Fireplace may need more frequent cleaning due to excessive lint from carpeting bedding material etc Only limited cleaning will be required under nor mal use of this appliance Dust the front grate and top of receiver valve Do not use cleaning fluids to clean logs or any other part of the appliance If after a period of use the flames start to exhibit unusual shapes and behavior or the burner fails to ignite smoothly then the burner holes may require some cleaning If this happens we recommend that you contact your nearest authorized service technician to get the appliance serviced Keep area around log set clean and clear of debris e Periodically inspect the air mixer and burner tube for foreign matter blocking the air inlet and flame holes Once every year a qualified agency or certified chimney sweep should examine and clean the venting system of the fireplace 12 www desatech com 114924 01B TROUBLESHOOTING A WARNING Turn off
26. eep se lector switch in the OFF position to prevent children from turning on burners with remote 114924 01B www desatech com SAFETY INFORMATION Continued You must operate this appliance with a fireplace screen in place Make sure fireplace screen is closed before running appliance Keep the appliance area clear and free from combustible ma terials gasoline and other flam mable vapors and liquids Children and adults should be alerted to the hazard of high tem perature and should stay away to avoid burns or clothing ignition This appliance as supplied is only for use with the type of gas indicated on the rating plate This appliance is not convertible for use with other gases Do not place propane LP supply tank s in side the structure Locate propane LP supply tank s outdoors propane LP units only If you smell gas e shut off gas supply e do not try to light any appliance e do not touch any electrical switch do not use any phone in your building e immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions e if you cannot reach your gas supplier call the fire department Never install the log set e in a recreational vehicle where curtains furniture clothing or other flammable objects are less than 42 inches from the front top or sides of the log set e in high traffic areas e in windy or drafty areas Before in
27. n Figure 9 Checking Gas Joints Propane LP Gas Only Equipment Shutoff Valve 5 z Control Valve Location Figure 10 Checking Gas Joints Natural Gas Only N Gas Meter ya MN SOS OIR OSOS Pressure Testing Appliance Gas Connections 1 Open equipment shutoff valve see Figure 8 2 Open main gas valve located on or near gas meter for natural gas or open propane LP supply tank valve 3 Make sure control knob of appliance is in the OFF position 4 Check all joints from equipment shutoff valve to gas control see Figure 9 or 10 Apply noncorrosive leak detection fluid to all joints Bubbles forming show a leak 5 Correct all leaks at once 6 Light appliance see Operating Appliance page 10 Check all other internal joints for leaks 7 Turn off appliance PLACEMENT OF LOOSE EMBERS A CAUTION Do not place any loose embers around pilot assembly Two bags of loose embers are provided with this unit For this installation use the embers that are approximately 1 square in size If needed larger embers can be broken to size These embers aid in concealing the burner pan directing flames through the ember bed quiet operation of the unit and gives a natural random flame pattern see Figure 11 page 10 Place embers as follows 1 Place embers around the center ember bed or ember pod 2 Place individual embers
28. ned through authorized dealers of this product and or DESA who will provide original factory replacement parts Failure to use original factory replacement parts voids this war ranty The heater MUST be installed by a qualified installer in accordance with all local codes and instructions furnished with the unit This warranty does not apply to parts that are not in original condition because of normal wear and tear or parts that fail or become damaged as a result of misuse accidents lack of proper maintenance or defects caused by improper installation Travel diagnostic cost labor transportation and any and all such other costs related to repairing a defective heater will be the responsibility of the owner TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF THE PRODUCT THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO FOUR 4 YEARS ON ALL COMPONENTS FROM THE DATE OF FIRST PURCHASE AND DESA S LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND DESA SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT INCIDENTAL OR CONSE QUENTIAL DAMAGES Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of incidental or consequential damages so the above limitation on implied warr
29. perly Ad CAUTION Avoid damage to gas control Hold gas control with wrench when connecting it to gas piping and or fittings CSA Design Certified Equipment Shutoff E Q Valve with 1 8 NPT SS Tap Le Natural From Gas Meter 5 W C Approved Flexible Gas Hose If to 10 5 W C allowed by local Pressure codes 3 Min Y Propane LP Pipe Cap Tee From External Nipple Joint Regulator 11 W C to 14 W C Pressure Figure 7 Gas Connection Purchase the optional CSA design certified shutoff valve from your dealer See Accessories page 17 Sedament Trap Minimum inlet pressure for purpose of input adjustment CHECKING GAS CONNECTIONS AWarNiNnc Testall gas piping and connections 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 detection fluid toalljoints Bubbles forming show a leak Correct all leaks at once AX CAUTION Make sure exter nal regulator has been installed between propane LP supply and appliance See guidelines under Connecting to Gas Sup ply page 7 PRESSURE TESTING GAS SUPPLY PIPING SYSTEM Test Pressures In Excess Of 1 2 PSIG 3 5 kPa 1 Disconnect appliance with its appliance main gas valve control valve and equipment shutoff valve from gas supply piping system Pressures in excess of 1 2 psig will damage control valve
30. r cigarette smoke cements and glues new carpet or textiles etc create fumes These fumes may mix with combustion air and create odors These odors will disappear over time OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Appliance produces a clicking 1 Metal expanding while 1 This is common with most ticking noise just after burners are lit or shut off heating or contracting while cooling appliances If noise is excessive contact qualified service person Appliance produces unwanted odors he Appliance burning vapors from paint hair spray glues cleaners chemicals new carpet etc See IMPORTANT statement above 2 Low fuel supply propane LP only 3 Gas leak See Warning statement at top of page Open window to ventilate room Stop using odor causing products while appliance is running Refill supply tank propane LP only Locate and correct all leaks see Checking Gas Connections page 8 Appliance shuts off in use he Not enough fresh air is avail able 2 Low line pressure 3 Pilot is partially clogged Open window and or door for ventilation Contact local natural or propane LP gas company Clean ODS pilot see Cleaning and Maintenance page 12 Gas odor even when control knob is in OFF position he Gas leak See Warning statement at top of page 2 Control valve or gas control defective Locate and correct all leaks see
31. rs Keep control knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob e If control knob does not pop out when released contact a qualified service person or gas supplier for repairs Note If pilot goes out repeat steps 4 through 8 Slightly push in and turn control knob coun terclockwise to the ON position FO Piezo Ea Flame Adjustment Knob Figure 12 Setting Control Knobs www desatech com 114924 01B OPERATING APPLIANCE Continued 10 Wait one minute and move switch to the ON position to light burner Note AUTO is only functional when using optional remote control accessory 11 Set flame adjustment knob to any level between HI and LO an TO TURN OFF GAS TO APPLIANCE 1 Push switch into OFF position The pilot will remain lit for normal service 2 Access control knobs 3 Depress gas control knob slightly and turn clockwise to OFF Do not force OPTIONAL HAND HELD REMOTE OPERATION Note Remote control accessory must be pur chased separately see Accessories page 17 Follow instructions included with the remote control NOTICE You must light the pilot before using the hand held re mote control unit See Lighting Instructions on page 10 After lighting let pilot flame burn for about one minute Turn control knob to ON posi tion Adjust flame adjustment knob anywhere between HI an
32. rts in accordance with these diagrams or failure to use only parts specifically approved with this appliance may result in prop erty damage or personal injury Piezo Ignitor Control Knobs Chassis Assembly Figure 1 Product Identification UNPACKING AX CAUTION Donotremove the data plates from the grate as sembly The data plates contain important warranty and safety information 1 Remove log set assembly from carton IMPORTANT Do not pick up assembly by logs This could damage the unit Always handle assembly by grate 2 Remove all protective packaging applied to log set for shipment 3 Check all items for any shipping damage If damaged promptly inform dealer where you bought appliance PRODUCT FEATURES This unitized gas log set is tested and approved to ANSIZ21 60 2003 and CSA 2 2 2003 as a vented decorative appliance This unit has a piezo ignitor This system requires no matches batteries or other sources to light appliance An ON OFF remote is available for use with this vented log set see Accessories page 17 A wall thermostat or hand held thermostat remote is not to be used with vented decorative appliances 114924 01B INSTALLATION Ad WARNING A qualified ser vice person must install heater Follow all local codes A WARNING Before installing in a solid fuel burning fireplace the chimney flue and firebox must be cleaned of soot creo sot
33. stalling in a solid fuel burning fireplace the chimney flue and firebox must be cleaned of soot creosote ashes and loose paint by a qualified chimney cleaner Creosote will ignite if highly heated Inspect chimney flue for damage If dam aged repair flue before operating appliance This logset is designed to be smokeless If logs ever appear to smoke turn off appliance and call a qualified service person Note During initial operation slight smoking could occur due to log curing and the burning of manu facturing residues You may wish to add more ventilation by opening a window 8 14 15 You must operate this log set with fireplace screen in place and fully closed Unless provided by other means screens shall have openings for introduction of combustion air If fireplace has glass doors never operate with glass doors closed If you operate heater with doors closed heat buildup inside fireplace will cause glass to burst Also if fireplace opening has vents at the bottom you must open the vents before operating heater To reduce the creation of soot follow the instruc tions in Cleaning and Maintenance page 12 Do not use a blower insert heat exchanger insert or other accessory not approved for use with this log set The installation and provisions for combustion and ventilation air must conform with the Na tional Fuel Gas Codes ANSI Z233 1 NFPA 54 Section 5 3 Air for combustion and Ventil
34. tinguish the flame and remove any obstruction until proper venting is achieved The chimney flue damper must be fixed open to pro vide a minimum of 32 square inch of free air opening at all times during operation of the log set A damper clamp is included to secure the damper The minimum flue sizes shown in Figure 3 are based on a 6 chimney height using round pipe Your minimum flue size will vary based on input rate and chimney height Refer to the National Fuel Gas Code ANSI Z223 1 NFPA 54 Section 6 6 for details INSTALLING DAMPER CLAMP Secure the damper stop clam to the edge of the damper as shown in Figure 4 If for any reason this clamp doesn t work on your fireplace another suitable clamp or permanent stop must be installed or the damper blade must be cut or removed Damper Clamp mi y Damper w RS Damper Clamp Xx N gR a Damper ay SO MAW SHON Masonry Manufactured Fireplace Fireplace Figure 4 Attaching Damper Clamp INSTALLING REMOTE CONTROL ACCESSORY BRACKET If installing optional remote control accessory you will need to install the remote accessory bracket for the receiver Use screws provided to attach bracket to valve bracket as shown in Figure 5 Follow installation instructions included with remote accessory Valve Bracket Remote Bracket Figure 5 Attaching Remote Bracket to Valve Bracket 6 www desatech com 114924 01B INSTALLATION
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