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Desa FMH26TN 14 User's Manual

1. 3 Keep control knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob Now follow step 8 page 17 E OPERATING BLOWER J This blower has three settings ON OFF and AUTO In the ON position the blower will operate constantly In the OFF posi tion the blower will not operate In the AUTO position the blower will start when the thermostat senses a sufficient increase in firebox temperature Note Your fireplace and thermostat blower will not turn on and off at the same time The fireplace may run for several minutes before the blower turns on After the heater modulates to the pilot position the blower will continue to run The blower will shut off after the firebox temperature decreases Note It is safe to operate fireplace with blower turned off However the blower helps distribute heated air from the fireplace Auto Off On Switch Figure 30 Auto Off On Switch INSPECTING BURNER Check pilot flame pattern and burner flame pattern often PILOT FLAME PATTERN Figure 31 shows acorrect pilot flame pattern Figure 32 shows an incorrect pilot flame pattern The incorrect pilot flame is not prop erly heating the thermocouple This will cause the thermocouple to cool When the thermo couple cools the fireplace will shut down If pilot flame pattern is incorrect as shown in Figure 32 e turn fireplace off see To Turn Off Gas to Appliance e see Troubleshooting pag
2. For all models Your vent free gas appli ance requires regular cleaning and mainte nance to prevent performance problems This kit gives you the tools and instructions to make it easy to clean all critical areas of your appliance CABINET MANTEL WITH FULL HEARTH BASE AND ROUNDED LEG STYLING Unfinished GMC61U Oak Finished GMC60F Appearance May Differ by Model For use with fireplace A mantel and hearth base offers compact styling and completes the fireplace look Available in a oak stain finish or an unfinished birch ready to stain or paint Complete assembly instructions included Three sided brass trim kit included 26 CORNER MANTEL WITH FULL HEARTH BASE Unfinished GMC63U Finished GMC64F White Lacquer GMC65W For use with fireplace Space saving mantel and hearth base corner design features clean classic lines Available in a stained oak finish white lacquer finish or an unfinished birch ready to stain or paint Complete assembly instructions included Three sided brass trim kit included 107105 OWNER S MANUAL NOTES 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 ma
3. Screen Shipping Screw i Screen To Fireplace Gas Regulator Flexible Gas Line from Fireplace Gas Regulator Check all gas connections for leaks See Checking Gas Connections page 16 Replace branch support back into fire place Feed flexible gas line into fire place base area while replacing branch support Make sure the entire flexible gas line is in fireplace base area Reat tach branch support to fireplace with screws removed in step 2 Shoulder Screw Flexible Gas Line Figure 24 Removing Branch Support From Fireplace Equipment Shutoff Valve Provided by Installer N To External Regulator Figure 25 Attaching Flexible Gas Line to Equipment Shutoff Valve Continued fri NATURAL GAS VENT FREE FIREPLACE SYSTEM INSTALLATION Continued CHECKING GAS CONNECTIONS A WARNING Test all gas pip ing and connections for leaks after installing or servicing Cor rect all leaks at once WARNING Never use an open flame to check for a leak Apply a noncorrosive leak detection fluid to all joints Bubbles forming show a leak Correct all leaks at once 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 equip ment shutoff valve from gas supply pip ing system Pressures in excess of 1 2 psig will damage fireplace regulator 2 Cap
4. The primary air inlet holes allow the proper amount of air to mix with the gas This pro vides aclean burning flame Keep these holes clear of dust dirt lint and pet hair Clean these air inlet holes prior to each heating season Blocked air holes will create soot We recommend that you clean the unit every three months during operation and have heater in spected yearly by a qualified service person Wealsorecommend that you keep the burner tube and pilot assembly clean and free of dust and dirt To clean these parts we recom mend using compressed air no greater than 30 PSI Your local computer store hard ware store or home center may carry com pressed air in a can You can use a vacuum cleaner in the blow position If using com pressed air in a can please follow the direc tions on the can If you don t follow direc tions on the can you could damage the pilot assembly 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 holes on injector holder for dust and dirt see Figure 35 3 Blow air through the ports slots and holes in the burner 4 Check the injector holder located at the end of the burner tube again Remove any large particles of dust dirt lint or pet hair with a soft cloth or vacuum cleaner nozzle 5 Blow air into the primary air holes on the injector holder 6 Incase any large clumps of dust have now b
5. C Install a lower Btu Hr fireplace if lower Btu Hr size makes room unconfined If the actual Btu Hr used is less than the maximum Btu Hr the space can support the space is an unconfined space You will need no additional fresh air ventilation A WARNING If the area in which the heater may be operated is smaller than that defined as an unconfined space or if the building is of unusually tight construction provide adequate combustion and ventilation air by one of the methods described in the National Fuel Gas Code ANSI 2223 1 NFPA 54 Section 5 3 or applicable local codes 6 107105 OWNER S MANUAL AIR FOR COMBUSTION AND VENTILATION P 12 Continued VENTILATION AIR Ventilation Air From Inside Ventilation Grills ildi Into Adjoining Room Building vano Option 2 This fresh air would come from an adjoining into Adjoining Pe unconfined space When ventilating to an Room Door into adjoining unconfined space you must pro Option 1 Adjoining vide two permanent openings one within eal 12 of the ceiling and one within 12 of the floor on the wall connecting the two spaces see options and 2 Figure 5 Youcan also remove door into adjoining room see op tion 3 Figure 5 Follow the National Fuel Gas Code ANSI Z223 1 NFPA 54 Section 5 3 Air for Combustion and Ventilation for required size of ventilation grills or ducts Ventilation Air Fr
6. Supply page 14 Mantel Shelf Note All vertical measurements ler are from top of E7 fireplace s ET opening to bottom of mantel shelf All measurements are in inches Side of Firebox Figure 12 Minimum Mantel Clearances for Built In Installation 12 Check for leaks See Checking Gas Connections page 16 13 Place mantel around fireplace Be care ful not to damage wall or mantel 14 Place brass trim kit on the shoulder screws located on the side and top of the fireplace Firmly snap the brass trim over the shoulder screws on fireplace see Figure 13 15 Adjust assembly to remove any gaps Attach remaining two 3 wood screws from hardware pack through openings inside of fireplace sides into the man tel The openings are located at top be hind the area for the black louvers see Figure 13 16 Reinstall top black louvers Hole for 3 wood screw for attaching Shoulder fireplace to Screws mantel Hole for 3 wood screw for attaching fireplace to wooden base Assembled Brass Trim S Figure 13 Attaching Brass Trim to Fireplace eet 1 3 4 Screw Wood Base Figure 14 Attaching Wood Base to Floor 107105 INSTALLATION Continued Assembling Brass Trim Brass trim shipped with mantel 1 Remove packaging from three remain ing pieces of brass trim 2 Locate two adjusting plates with set screws and two shims in the hard
7. fireplace involves installing fireplace into a framed in enclo sure This makes the front of fireplace flush with wall An optional brass trim kit acces sory is available see Accessories page 26 Brass trim will extend past sides of fireplace approximately 1 2 inch This will cover the rough edges of the wall opening If install ing a built in mantel above the fireplace you must follow the clearances shown in Figure 12 page 10 Follow the instructions below to install the fireplace in this manner Actual Framing Height 26 26 7 3 Front Width 26 3 4 26 7 3 Depth 9 Th 10 1 2 Bottom 3 4 3 4 1 Frame in rough opening Use dimen sions shown in Figure 9 for the rough opening If installing in a commer use dimensions shown in Figure 10 for the rough open ing The height is 26 7 s which is the same as the wall opening above 2 Ifinstalling GA3450 T blower acces sory do so at this time Follow instruc tions included with blower accessory Note If not installing blower acces sory you may wish to run electrical wiring to your fireplace for future blower installation see Accessories page 26 Use only approved three wire electrical wiring 107105 OWNER S MANUAL Ay WARNING If pre wiring do not connect wiring to any electri cal source at this time Install fireplace electrical outlet and connect wiring to outlet be fore connecting to electrical source The firepl
8. sev eral moments after the heater has been turned off When switch is in the ON position the fan will run until turned to OFF Reinstall upper louver assem bly and hood if previously removed see Figure 16 page 11 Close lower louver door Valve Cover Shield Figure 19 Installing Switch Plate to Valve Cover Shield 107105 INSTALLATION Continued For Built In Installation Ay WARNING A licensed elec trician must connect the wiring harness to electrical supply fol lowing all local codes Electri cian must provide a clamp on the box cover to secure the wir ing Wiring should be routed through the bushing in the hole on the outer casing of heater Follow instructions Removing Valve Cover Shield page 11 then 1 Install a snap bushing found in hardware kit into one of the holes found on rear of valve cover shield The other hole is for a strain relief clamp not supplied to secure incoming electrical supply 2 Follow steps 2 through 6 in Installing Blower Assembly pages 11 and 12 Also remove black wire from middle switch terminal 2 3 Remove black plastic strain relief and power cord from switch plate The power cord supplied will not be used in built in installations Pop in the plastic snap bushing found in hardware kit into the hole left by supply cord strain relief 4 A licensed electrician must follow the wiring diagram to connect incoming electrical supply to fan kit wiring
9. 04313 02 Left Hinge M10908 2 Hinge Screws 103734 01 Burner Support M11084 26 Hex Head Screw 10 x 3 8 097809 03 3 8 NPT x 3 8 Flare Brass Fitting 101629 01 Bushing PARTS AVAILABLE NOT SHOWN 101054 01 Lighting Instructions Plate 100563 01 Warning Plate 103470 01 Hardware Package OONDOARWD 107105 25 fii NATURAL GAS VENT FREE FIREPLACE SYSTEM ACCESSORIES Purchase these fireplace accessories from your local dealer If they cannot supply these accessories call DESA International s Sales Department at 1 866 672 6040 for referral information You can also write to the ad dress listed on the back page of this manual EQUIPMENT SHUTOFF VALVE GA5010 For all models Equipment shutoff valve with 1 8 NPT tap es ee BRASS TRIM KIT GA6094 Optional three sided brass trim kit for cus tom and recessed installations when unit is on the floor Provides a finished appear ance by covering rough edges of wall open ing Included with all mantels BRASS TRIM KIT GA6095 Optional four sided brass trim kit for recessed built in installations when unit is raised off of the floor Provides a finished appearance by covering rough edges of wall opening THERMOSTATICALLY CONTROLLED BLOWER KIT GA3400T For all models Provides better heat distri bution Makes fireplace more efficient Automatically turns off and on as needed CLEANING KIT GCK Not Shown
10. EM OPERATING FIREPLACE Continued Par TO TURN OFF GAS TO APPLIANCE Shutting Off Fireplace 1 Turn control knob clockwise 7 to the OFF position 2 Turn off all electric power to the ap pliance if service is to be performed Shutting Off Burner Only pilot stays lit Turn control knob clockwise X to the PILOT position A THERMOSTAT CONTROL OPERATION The thermostatic control used on this fire place differs from standard thermostats Standard thermostats simply turn on and off the burner The thermostat used on this fireplace senses the room tempera ture The thermostat adjusts the amount of gas flow to the burner This increases or decreases the burner flame height At times the room may exceed the set temperature If so the burner will shut off The burner will cycle back on when room temperature drops below the set temperature The control knob can be set to any heat level between HI and LO Note The thermostat sensing bulb mea sures the temperature of air near the fireplace cabinet This may not always agree with room temperature depend ing on housing construction installation location room size open air tempera tures etc Frequent use of your fire place will let you determine your own comfort levels MANUAL LIGHTING E PROCEDURE 1 Follow steps 1 through 5 under Light ing Instructions page 17 2 With control knob pressed in strike match Hold match to pilot until pi lot lights
11. LING FIREPLACE Tools Required e Phillips screwdriver e 5 16 hex wrench slotted screwdriver Installing Log 1 2s Lift screen up and pull out to remove Cut two plastic straps to remove the log from the firebox cavity An optional blower is available See Ac cessories page 26 Install optional blower now Follow installation in structions provided with blower Remove log packaging material and discard packaging Gently place log set on burner support see Figure 3 The log should fit flat against top of burner support and log locators fit into the slots under the log Do not allow log to con tact flame If flame contacts log soot will be created Reattach screen by placing the notches in the screen frame over the shoulder screws and pushing down Screen Screen Shipping Figure 3 Assembling Fireplace Assembling Hood 1 NIP Locate four black phillips sheet metal screws from the hardware packet Rotate hood as shown in Figure 4 Make sure hood tabs point toward fireplace Insert hood tabs between baffle and louvers see Figure 4 Figure 4 Assembling Hood gt 5 6 Shoulder Burner Support Branch Support Gently rotate hood to upright position Make sure hood tabs are behind lou vers and hood is resting on firebox top see Figure 4 Align screw holes on hood with screw holes on firebox top Insert screws as shown in Figure 4 Tighten screw
12. RAL GAS VENT FREE FIREPLACE SYSTEM ILLUSTRATED PARTS BREAKDOWN _ FMH26TN 7 24 107105 OWNER S MANUAL PA RTS L l ST This list contains replaceable parts used in your fireplace When ordering parts follow the instructions listed under Replacement Parts on page 23 of this manual FMH26TN KEY NO PART NO DESCRIPTION ma 102633 02 Outer Casing Top 102624 02 Outer Casing 099230 02 Shoulder Screw 098304 01 Screw 10 x 3 8 107178 01 Burner 103209 05 Louvered Door 102635 02CK Left and Right Side Front 101629 02 Bushing 103209 01 Top Louver 104281 01BR Firebox Hood 102638 01 Firebox Top 104285 01 ODS Pilot Assembly 102460 01CJ Firebox Wrapper 099211 01 Control Bracket Screw 103963 01 Inlet Tube 102834 01 Burner Tube 098304 03 Screw 8 18 x 3 8 098303 02 Regulator Screw 104335 01CK Outer Shell Base 102649 01CK Branch Support 099415 10 Gas Regulator 102875 01 Regulator Bracket 101381 01 Valve Cover and Piezo 099387 11 Pilot Tube 098271 06 Ignitor Cable 107186 02 Injector 101006 02 Pilot Bracket 098249 01 Nut M5 098522 23 Gas Valve 102639 01 Baffle 101628 01 Flexible Connector 102869 01 Control Bracket 102731 01 Control Shield 103295 03 Screen Assembly 107153 01 Log Set Assembly Kit 104313 01 Right Hinge 1
13. VENT FREE FIREPLACE SYSTEM INSTALLATION Continued 4 Carefully disconnect green and white wires at their insulated connectors In top of the heater cabinet locate the four mounting holes on the outer cas ing Align these four holes with those on the blower bracket assembly Attach blower bracket assembly to the outer casing with 4 10 screws provided see Figure 18 Blower Bracket Assembly Screw al Valve Cover lt Shield Box Cover 8 Route the wire harness through the hole in left side of baffle Pull wire harness through lower opening above where the valve shield was removed see Figure 18 Insert the 4 wire harness into one of the round holes in the rear of the valve cover shield and through the rectangular hole in the front of shield see Figure 18 Reconnect red wire to switch position 3 Reconnect blue wire to switch posi tion 1 Reconnect green and white wires Wiring Routing Hole in Baffle Figure 18 Installing Blower Bracket Assembly 9 Install the switch plate on the valve cover shield with 2 10 screws provided see Figure 19 Reinstall the valve cover shield Route power cord out of the cabinet by inserting it through the bushing on the outer casing see Fig ure 18 Plug fan kit into 120 Volt grounded power supply and test opera tion Note When switch is in the AUTO position the fan will start after the heater has run for a few moments The fan will continue to run for
14. ace electrical outlet is included with the 10 Check all gas connections for leaks See Checking Gas Connections page 16 If using optional brass trim kit install the trim after final finishing and or painting of wall See instructions in cluded with brass trim accessory for at taching brass trim IMPORTANT When finishing your fire GA3450 T blower accessory Only use the fireplace electrical outlet GA3450 T blower accessory supplied with the Note A qualified installer should make all electrical connections Install gas piping to fireplace location This installation includes an approved flexible gas line if allowed by local codes after the equipment shutoff valve The flexible gas line must be the last item installed on the gas piping If you have not assembled firebox fol low instructions on page 4 Carefully set fireplace in front of rough opening with back of fireplace inside wall opening Attach flexible gas line to fireplace gas regulator See Connecting Fireplace to Gas Supply page 15 Bend four nailing flanges on outer cas ing with pliers see Figure 11 Attach fireplace to wall studs using nails or wood screws through holes in nailing flange 3 4 Off e The Floor 7 nS 2677s Minimum Figure 9 Rough Opening for Installing in Wall box combustible materials such as wall board gypsum board sheetrock drywall p
15. ace if a log is chipped dime sized or larger 17 Provide adequate clearances around air openings OWNER S MANUAL PRODUCT FEATURES SAFETY PILOT This fireplace has a pilot with an Oxygen Depletion Sensing ODS safety shutoff sys tem The ODS pilot is a required feature for vent free room fireplaces The ODS pilot shuts off the fireplace if there is not enough fresh air PIEZO IGNITION SYSTEM This fireplace has a piezo ignitor This sys tem requires no matches batteries or other sources to light fireplace THERMOSTATIC HEAT CONTROL This fireplace has a thermostat sensing bulb and a control valve The thermostat will automatically modulate the heat output to maintain a consistent room temperature This results in greater fireplace comfort This can also result in lower gas bill PRODUCT IDENTIFICATION Fireplace Cabinet N IIEL IILL RRR LIIR LIRR ERI RE RSR z 2RR 29S ETS RR X ae SRR Ignitor Button lt I A SIELA IILI ALEL RRR AARAA AA x os sees Control Knob Screen LOKLRK KRY RIR 4 Figure 1 Vent Free Natural Gas Fireplace System 107105 LOCAL CODES Install and use fireplace 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 Prote
16. act your local natural gas supplier 107105 OWNER S MANUAL 14 000 26 000 Natural Only Piezo 3 W C 10 5 5 25 Ix 26 is x 9 3 8 32 5 s x 27 7 16 x 11 s 44 h Ibs 48 Ibs TECHNICAL SERVICE You may have further questions about in stallation operation or troubleshooting If so contact DESA International s Technical Service Department at 1 866 672 6040 You can also visit DESA International s technical services web site at www desatech com 23 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 International s Technical Service Department at 1 866 672 6040 for referral information When calling DESA International have ready e your name e your address e model and serial numbers of your fireplace e how fireplace was malfunctioning e type of gas used propane 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 International at 1 866 672 6040 for referral information When calling DESA International have ready e model number of your fireplace e the replacement part number fii NATU
17. burning manufacturing residues To prevent the creation of soot follow the instructions in Cleaning and Main tenance page 19 Before using furniture polish wax car pet cleaner or similar products turn heater off If heated the vapors from these products may create a white pow der residue within burner box or on adjacent walls or furniture This fireplace needs fresh air ventila tion to run properly This fireplace has an Oxygen Depletion Sensing ODS safety shutoff system The ODS shuts down the fireplace if not enough fresh air is available See Air for Combus tion and Ventilation pages 5 through 7 If fireplace keeps shutting off see Troubleshooting pages 20 through 22 Do not run fireplace e where flammable liquids or vapors are used or stored e under dusty conditions Do not use this fireplace to cook food or burn paper or other objects Do not use fireplace if any part has been under water Immediately call a quali fied service technician to inspect the room fireplace and to replace any part of the control system and any gas con trol which has been under water 107105 SAFETY INFORMATION Continued 14 Turn off and unplug fireplace and let cool before servicing Only a qualified service person should service and re pair fireplace 15 Operating fireplace above elevations of 4 500 feet could cause pilot outage 16 Do not operate fireplace if any log is broken Do not operate firepl
18. ce Make sure fireplace screen is in place before running fireplace Keep the appliance area clear and free from combustible materials gasoline and other flammable va pors and liquids 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 If you smell gas e 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 if you cannot reach your gas supplier call the fire department 10 11 12 13 This fireplace shall not be installed in a bedroom or bathroom Do not use this fireplace as a wood burning fireplace Use only the logs provided with the fireplace Do not add extra logs or ornaments such as pine cones vermiculite or rock wool Using these added items can cause sooting Do not add lava rock around base Rock and debris could fall into the control area of fireplace You must operate this fireplace with the fireplace screen in place Make sure fireplace screen is in place before run ning fireplace This fireplace is designed to be smoke less If logs ever appear to smoke turn off fireplace and call a qualified ser vice person Note During initial op eration slight smoking could occur due to log curing and fireplace
19. ction Association Inc Batterymarch Park Quincy MA 02269 UNPACKING 1 Remove log box and fireplace from carton The hood is not attached IMPORTANT The fireplace hood is inside the cardboard protective end wrap on the left side of fireplace as viewed from front A decal is on the outside of the cardboard end wrap stat ing hood is enclosed see Figure 2 2 Remove hood from cardboard protec tive end wrap as shown in Figure 2 3 Remove all protective packaging ap plied to fireplace for shipment 4 Make sure your fireplace includes one hardware packet 5 Check fireplace for any shipping damage If fireplace is damaged promptly inform dealer where you bought fireplace Hood IMPORTANT THIS PACKAGE CONTAINS A Enclosed FIREPLACE HOOD UNWRAP Decal CARTON AND REMOVE HOOD eca BEFORE DISCARDING PROTECTIVE PACKAGING iS Cardboard D Protective lt Fireplace End Wrap lt 2 b gt N N H ood s N Figure 2 Removing Fireplace Hood EAEE urere NATURAL GAS VENT FREE FIREPLACE SYSTEM ASSEMBLY WARNING Always have branch support and screen in place before operating fireplace This prevents excessive tempera tures on fireplace surfaces AX WARNING Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this fireplace may result in prop erty damage or personal injury ASSEMB
20. dor making agent is added to natural gas The odor helps you detect a natural gas leak However the odor added to natural gas can fade Natural 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 fireplace WARNING Any change tothis fireplace or its controls can be dangerous AX WARNING Do not allow fans to blow directly into the fireplace Avoid any drafts that alter burner flame patterns Ceiling fans can create drafts that alter burner flame patterns Altered burner patterns can cause sooting A WARNING Do not use a blower insert heat exchanger insert or other accessory not ap proved for use with this fireplace 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 in the fireplace Fireplace front and screen be comes very hot when running fireplace Keep children and adults away from hot surfaces to avoid burns or clothing ignition Fireplace will remain hot for a time after shutdown Allow sur faces to cool before touching Carefully supervise young chil dren when they are in the room with fireplace You must operate this fireplace with a fireplace screen in pla
21. ee Operating Fire place pages 17 and 18 Check all other internal joints for leaks 7 Turn off fireplace see To Turn Off Gas to Appliance page 18 Replace front panel Shutoff Valve Gas Meter Equipment tita lI a eae Figure 27 Checking Gas Joints 107105 OPERATING FIREPLACE FOR YOUR SAFETY READ BEFORE LIGHTING OWNER S MANUAL LIGHTING INSTRUCTIONS A 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 WARNING You must operate this fireplace with the fireplace screen in place Make sure fire place screen is installed before running fireplace This appliance has a pilot which must be lighted by hand When lighting 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 Do not try to light any appliance Do not touch any electric switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas suppli
22. een pushed into the burner repeat steps 3 and 4 Clean the pilot assembly also A yellow tip on the pilot flame indicates dust and dirt in the pilot assembly There is a small pilot air inlet hole about two inches from where the pilot flame comes out of the pilot assembly see Figure 36 With the unit off lightly blow air through the air inlet hole You may blow through adrinking straw if compressed air is not available Injector Holder Burner Tube Primary Air Inlet Holes Figure 35 Injector Holder On Outlet Burner Tube Pilot Air Inlet Hole Figure 36 Pilot Inlet Air Hole CABINET Air Passageways e Use a vacuum cleaner or pressurized air to clean Exterior e Use a soft cloth dampened with a mild soap and water mixture Wipe the cabi net to remove dust fii NATURAL GAS VENT FREE FIREPLACE SYSTEM 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 AX WARNING Turn off and un plug fireplace and let cool before servicing Only a qualified ser vice person should service and repair fireplace POSSIBLE CAUSE A CAUTION Never use a wire needle or similar object to clean ODS pilot This can damage ODS pilot unit REMEDY When ignitor button is pressed there is no spark at ODS pilot 1 Ignit
23. er s instructions If you cannot reach your gas sup plier call the fire department Use only your hand to push in or turn the gas control knob Never use tools If the knob will not push in or turn by hand don t try to repair it call a qualified service technician or gas supplier Force or attempted repair may result in a fire or explosion Do not use this appliance if any part has been under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas con trol which has been under water 107105 NOTICE During initial operation of new fireplace burning logs will give off a paper burning smell Orange flame will also be present Open window to vent smell Operate fireplace on HI position to burn off odor This will only last a few hours 1 STOP Read the safety information column 1 2 Make sure equipment shutoff valve is fully open 3 Turn control knob clockwise XN to the OFF position 4 Wait five 5 minutes to clear out any gas Then smell for gas including near the floor If you smell gas STOP Fol low B in the safety information column 1 If you don t smell gas go to the next step 5 Turn control knob counterclockwise the PILOT position Press in control knob for five 5 seconds see Figure 28 Ignitor Button Control Knob Figure 28 Control Knob In The OFF Po
24. er 1 000 Btu per hour 4 8 m per kw of the aggregate input rating of all appliances in stalled in that space and an unconfined space as a space whose volume is not less than 50 cubic feet per 1 000 Btu per hour 4 8 m per kw of the aggregate input rating of all appliances installed in that space Rooms communicating directly with the space in which the appliances are installed through openings not furnished with doors are con sidered a part of the unconfined space Adjoining rooms are communicating only if there are doorless passageways or ventila tion grills between them Continued fii NATURAL GAS VENT FREE FIREPLACE SYSTEM AIR FOR COMBUSTION AND VENTILATION Continued DETERMINING FRESH AIR FLOW FOR FIREPLACE LOCATION Determining if You Have a Confined or Unconfined Space Use this worksheet to determine if you have a confined or unconfined space Space Includes the room in which you will install fireplace plus any adjoining rooms with doorless passageways or ventilation grills between the rooms 1 Determine the volume of the space length x width x height Length x Width x Height cu ft volume of space Example Space size 20 ft length x 16 ft width x 8 ft ceiling height 2560 cu ft volume of space If additional ventilation to adjoining room is supplied with grills or openings add the volume of these rooms to the total volume of the space 2 Multiply the space volume by 20 to det
25. ermine the maximum Btu Hr the space can support volume of space x 20 Maximum Btu Hr the space can support Example 2560 cu ft volume of space x 20 51 200 maximum Btu Hr the space can support 3 Add the Btu Hr of all fuel burning appliances in the space Vent free fireplace Btu Hr Gas water heater Btu Hr Example Gas furnace Btu Hr Gas water heater 30 000 Btu Hr Vented gas heater Btu h Vent free fireplace _ 26 000 Btu Hr Gas fireplace logs Btu Hr Other gas appliances Btu Hr Total e 26009 Btu Hr Total Btu Hr Do not include direct vent gas appliances Direct vent draws combustion air from the outdoors and vents to the outdoors 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 Btu Hr maximum the space can support 56 000 Btu Hr actual amount of Btu Hr used The space in the above example is a confined space because the actual Btu Hr used is more than the maximum Btu Hr the space can support You must provide additional fresh air Your options are as follows A Rework worksheet adding the space of an adjoining room If the extra space provides an unconfined space remove door to adjoin ing room or add ventilation grills between rooms See Ventilation Air From Inside Building page 7 B Vent room directly to the outdoors See Ventilation Air From Outdoors page 7
26. es 20 through 22 Thermocouple Pilot Burner Figure 31 Correct Pilot Flame Pattern Thermocouple Pilot Burner Figure 32 Incorrect Pilot Flame Pattern 107105 INSPECTING BURNER Continued BURNER FLAME PATTERN Figure 33 shows a correct burner flame pattern Figure 34 shows an incorrect burner flame pattern The incorrect burner flame pattern shows sporadic irregular flame tip ping It also shows the flame consistently higher than one inch above the log Note When using the fireplace the first time the flame will be orange for approxi mately one hour until the log cures If burner flame pattern is incorrect as shown in Figure 34 e turn fireplace off see To Turn Off Gas to Appliance page 18 e see Troubleshooting pages 20 through 22 Top of Flame About One Inch Above Log Figure 33 Correct Burner Flame Patt ern Xr ws Figure 34 Incorrect Burner Flame Pattern 107105 OWNER S MANUAL CLEANING AND MAINTENANCE A WARNING Turn off fireplace and let cool before cleaning CAUTION You mustkeepcon trolareas burner and circulating air passageways of fireplace clean Inspectthese areas of fire place before each use Have fire placeinspected yearly by a quali fiedservice person Fireplace may need more frequent cleaning due to excessive lint from carpeting pet hair bedding material etc CLEANING BURNER INJECTOR HOLDER AND PILOT AIR INLET HOLE
27. fications 1 Unusually Tight Construction 2 Unconfined Space 3 Confined Space The information on pages 5 through 7 will help you classify your space and provide adequate ventilation Unusually Tight Construction The air that leaks around doors and win dows may provide enough fresh air for combustion and ventilation However in buildings of unusually tight construction you must provide additional fresh air Unusually tight construction is de fined as construction where a walls and ceilings exposed to the outside atmosphere have a con tinuous water vapor retarder with a rating of one perm 6 x 10 kg per pa sec m or less with open ings gasketed or sealed and b weather stripping has been added on openable windows and doors and c caulking or sealants are applied to areas such as joints around window and door frames be tween sole plates and floors be tween wall ceiling joints be tween wall panels at penetra tions for plumbing electrical and gas lines and at other openings If your home meets all of the three criteria above you must provide ad ditional fresh air See Ventilation Air From Outdoors page 7 If your home does not meet all of the three criteria above proceed to De termining Fresh Air Flow For Fire place Location page 6 Confined and Unconfined Space The National Fuel Gas Code ANSI Z223 1 NFPA 54 defines aconfined space as a space whose volume is less than 50 cubic feet p
28. fmi eo es COMPACT HEAT MAJ IC VENT FREE NATURAL GAS FIREPLACE SYSTEM OWNER S OPERATION AND INSTALLATION MANUAL FMH26TN 14 000 to 26 000 Btu Hr with Thermostat WARNING If the information in this manual is not followed exactly a fire or explosion may result causing property damage per sonal 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 per formed by a qualified installer service agency or the gas supplier Shown with Optional Cabinet Mantel Hearth Base Accessory WARNING Improper installa tion adjustment alteration ser vice or maintenance can cause injury or property damage Re fer to this manual for correct installation and operational pro cedures For assistance or ad ditional information consult a qualified installer service agency or the gas supplier WARNING This is an unvented gas fired heater It uses air oxygen from the room in which itis installed Provisions for adequate combusti
29. har ness see Figure 20 5 Plug power cord to the outlet receptacle not provided as shown in Figure 21 Wind the extra cable in power cord and and tie it up with the plastic wire strap see Figure 21 Set the cable bundle between the burner bracket and outer casing away from the burner 6 Reinstall valve cover shield 7 Test to make sure the blower is work ing properly 8 Reinstall upper louver assembly and hood if previously removed see Figure 16 page 11 Close lower louver door 107105 OWNER S MANUAL Fan Switch Auto Off On Auto Off Thermostat Switch N O Blue 110 115 V A C Figure 20 Wiring Diagram For Blower Accessory Built In Installation Blower Bracket Assembly Screw Harness Power Cord Outlet Receptacle Plastic Wire Strap F Valve i Re Cover D SS Shield Box Cover i RI Clamp Connector Harness X not included Figure 21 Installing Blower Bracket Assembly Continued fri NATURAL GAS VENT FREE FIREPLACE SYSTEM INSTALLATION Continued Extension Cord Use extension cord if needed The cord must have a three prong grounding plug and a three hole receptacle Make sure cord is in good shape It must be heavy enough to carry the current needed An undersized cord will cause a drop in line voltage This will result in loss of power and overheating Use a No 16 AWG cord for lengths less than 50 feet Attaching Wood Base
30. ke no other warranty expressed or implied LIMITED WARRANTY VENT FREE NATURAL GAS COMPACT HEAT MAJ IC FIREPLACE SYSTEM DESA International warrants this product to be free from defects in materials and components for four 4 years and five 5 years on stainless steel burners 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 fireplace to proper operating condition and an allowance for labor when provided by a DESA Authorized Service Center Warranty part s MUST be obtained through authorized dealers of this product and or DESA International who will provide original factory replacement parts Failure to use original factory replacement parts voids this warranty The fireplace 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 re
31. lated to repairing a defective fireplace 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 DURA TION OF ANY AND ALL IMPLIED WARRANTIES INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO FOUR 4 YEARS ON ALL COMPONENTS AND FIVE 5 YEARS ON STAINLESS STEEL BURNERS FROM THE DATE OF FIRST PURCHASE AND DESA INTERNATIONAL S LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND DESA INTERNATIONAL SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT INCIDENTAL OR CONSEQUENTIAL 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 warranties 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 CES A TM INTERNATIONAL 2701 Industrial Drive P O Box 90004 Bowling Green KY 42102 9004 www desatech com 107105 01 107105 01 Rev B NOT A UPC 02 02
32. lywood etc may be butted up next to the sides and top of the firebox Combustible materials should never overlap the firebox front facing A WARNING Do not allow any combustible materials to overlap the firebox front facing IMPORTANT Noncombustible materials such as brick tile etc may overlap the front facing but should never cover any neces sary openings like louvered slots A WARNING Do not allow non combustible materials to cover any necessary openings like lou vered slots Ay WARNING Never modify or cover the louvered slots on the front of the firebox WARNING Use only noncom bustible mortar or adhesives when overlapping the front facing with noncombustible facing material Nails or Wood 7 Screws x w Z A Nailing Flanges Figure 10 Rough Opening for Installing _ Figure 11 Attaching Fireplace to Wall Studs in Corner Continued fii NATURAL GAS VENT FREE FIREPLACE SYSTEM INSTALLATION Continued Mantel Clearances for Built In Installation If placing mantel above built in fireplace you must meet minimum clearance between mantel shelf and top of fireplace opening NOTICE Surface temperatures of adjacent walls and mantels be come hot during operation Walls and mantels above the firebox may become hot to the touch If installed properly these tempera tures meet the requirement of the national product standard F
33. off open end of gas pipe where equipment shutoff valve was connected 3 Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter 4 Check all joints of gas supply piping system Apply a noncorrosive leak de tection fluid to gas joints Bubbles forming show a leak 5 Correct all leaks at once 6 Reconnect heater and equipment shutoff valve to gas supply Check re connected fittings for leaks Test Pressures Equal To or Less Than 1 2 PSIG 3 5 kPa 1 Close equipment shutoff valve see Fig ure 26 2 Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter 3 Check all joints from gas meter to equip ment shutoff valve see Figure 27 Apply a noncorrosive leak detection fluid to gas joints Bubbles forming show a leak 4 Correct all leaks at once Equipment Open Shutoff Valve l Closed Figure 26 Equipment Shutoff Valve Pressure Testing Fireplace Gas Connections 1 Open equipment shutoff valve see Fig ure 26 2 Open main gas valve located on or near gas meter 3 Make sure control knob of fireplace is in the OFF position 4 Check all joints from equipment shutoff valve to thermostat gas valve see Fig ure 27 Apply a noncorrosive leak de tection fluid to gas joints Bubbles forming show a leak 5 Correct all leaks at once 6 Light fireplace s
34. ol low all minimum clearances shown in this manual NOTICE If your installation does not meet the minimum clearances shown you must do one of the following raise the mantel to an accept able height remove the mantel OPTIONAL MANTEL INSTALLATION Note Refer to instructions provided with the mantel for assembly instructions Refer to instructions below for system installa tion Refer to instructions on page 4 for firebox assembly Blower accessory should be installed if it is being used see Accesso ries page 26 1 Unscrew four brass screws that attach top louver to fireplace Remove louver from fireplace and set aside 2 Place fireplace on wood base 3 Place mantel around fireplace base assembly 4 Assemble brass trim kit See Assem bling Brass Trim page 11 5 Firmly snap brass trim kit on shoulder screws Shoulder screws are located on fireplace cabinet see Figure 13 6 Align brass trim kit for flush fit around opening 7 Use two 3 wood screws provided and attach fireplace base to wooden base see Figure 13 8 Remove brass trim kit and mantel Be careful not to damage wall or mantel 9 Place wood base next to wall at instal lation location 10 Attach wood base to floor with two 1 3 4 black screws provided see Figure 14 Tf the floor is concrete use anchor method see Attaching Wood Base to Solid Floor page 14 11 Install gas line See Connecting To Gas
35. om Outdoors Provide extra fresh air by using ventilation grills or ducts You must provide two per manent openings one within 12 of the ceiling and one within 12 of the floor Figure 5 Ventilation Air from Inside Building Shown with Optional Mantel Connect these items directly to the outdoors or spaces open to the outdoors These spaces include attics and crawl spaces Follow the National Fuel Gas Code ANSIZ223 1 NFPA 54 Section 5 3 Air for Combustion and Ventilation for required size of ventilation grills or ducts 2 _ Ventilated Attic IMPORTANT Do not provide openings for inlet or outlet air into attic if attic has a Cutie thermostat controlled power vent Heated air To Attic entering the attic will activate the power vent Inlet Air Ventilated J Inlet Air Crawl Space Figure 6 Ventilation Air from Outdoors Shown with Optional Mantel 107105 7 fii NATURAL GAS VENT FREE FIREPLACE SYSTEM 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 This will help circu late the heat throughout the house In the event of a p
36. on Purchase the optional CSA design certified equipment shutoff valve from your dealer See Accessories page 26 10 5 W C A CAUTION Use only new black iron or steel pipe Inter nally tinned copper tubing may be used in certain areas Check your local codes Use pipe of 1 2 or greater diameter to al low proper gas volume to fire place If pipe is toovolume pres sure 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 fireplace see Figure 23 IMPORTANT Install main gas valve equipment shutoff valve in an accessible location The main gas valve is for turning on or shutting off the gas to the appliance Check your building codes for any special requirements for locating equipment shutoff valve to fireplaces 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 fireplace valves CAUTION Use pipe joint seal ant that is resistant to liquid pe troleum LP gas We recommend that you install a sediment trap in supply line as shown in Figure 23 Locate sediment trap where it is within reach for cleaning Install in piping system between fuel supply and heater Locate sedi ment trap where trapped matter is not likely to freeze A sediment trap traps moistu
37. on and ventilation air must be pro vided Refer to Air for Combus tion and Ventilationsection on page 5 of this manual This appliance may be installed in an aftermarket permanently located manufactured 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 fii NATURAL GAS VENT FREE FIREPLACE SYSTEM SAFETY INFORMATION A warnincs IMPORTANT Read this owner s manual carefully and completely before trying to assemble oper ate or service this fireplace Im proper use of this fireplace 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 headaches dizziness or nausea If you have these signs the fireplace may not be working properly Get fresh air at once Have fireplace 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 Gas Natural gas is odorless An o
38. or cable pinched or wet N Ignitor electrode not connected to igni tor cable Broken ignitor cable Bad piezo ignitor Ignitor electrode broken Ignitor electrode positioned wrong Nm amp W 1 Free ignitor cable if pinched by any metal or tubing Keep ignitor cable dry Reconnect ignitor cable N Replace ignitor cable Replace piezo ignitor Replace piezo ignitor Replace piezo ignitor Nm BW When ignitor button is pressed there is spark at ODS pilot but no ignition 1 Gas supply turned off or equipment shutoff valve closed Control knob not in PILOT position Control knob not pressed in while in PILOT position 4 Air in gas lines when installed Wn 5 ODS pilot is clogged 6 Gas regulator setting is not correct 1 Turn on gas supply or open equipment shutoff valve Turn control knob to PILOT position Press in control knob while in PILOT position 4 Continue holding down control knob Re peat igniting operation until air is removed 5 Clean ODS pilot see Cleaning and Maintenance page 19 or replace ODS pilot assembly 6 Replace gas regulator Wn ODS pilot lights but flame goes out when control knob is released 1 Control knob not fully pressed in 2 Control knob not pressed in long enough 3 Safety interlock system has been triggered Equipment shutoff valve not fully open Thermocouple connection loose at con trol valve 6 Pilot flame not touching thermoc
39. ouple which allows thermocouple to cool causing pilot flame to go out This prob lem could be caused by one or both of the following A Low gas pressure B Dirty or partially clogged ODS pilot Thermocouple damaged Control valve damaged ns on www desatech com 20 1 Press in control knob fully 2 After ODS pilot lights keep control knob pressed in 30 seconds 3 Wait one minute for safety interlock sys tem to reset Repeat ignition operation 4 Fully open equipment shutoff valve 5 Hand tighten until snug then tighten 1 4 turn more 6 A Contact local natural gas company B Clean ODS pilot see Cleaning and Maintenance page 19 or replace ODS pilot assembly Replace thermocouple Replace control valve on 107105 TROUBLESHOOTING Continued OBSERVED PROBLEM OWNER S MANUAL POSSIBLE CAUSE REMEDY Burner does not light after ODS pilot is lit 1 Burner orifice is clogged 2 Burner orifice diameter is too small 3 Inlet gas pressure is too low 1 Clean burner see Cleaning and Mainte nance page 19 or replace burner orifice 2 Replace burner orifice 3 Contact local natural gas company Delayed ignition of burner 1 Manifold pressure is too low 2 Burner orifice is clogged 1 Contact local natural gas company 2 Clean burner see Cleaning and Mainte nance page 19 or replace burner orifice Burner backfiring during combustion 1 Burner orifice is clogged o
40. our fireplace these spacers can be placed directly against wall or framing materials Use the dimensions shown for rough open ings to create the easiest installation see Built In Fireplace Installation page 9 CHECK GAS TYPE Use only natural gas If your gas supply is not natural gas do not install fireplace Call dealer where you bought fireplace for proper type fireplace INSTALLATION ITEMS Before installing fireplace make sure you have the items listed below e piping check local codes e sealant resistant to propane LP gas e equipment shutoff valve e test gauge connection e ground joint union e sediment trap e tee joint e pipe wrench ACSA design certified equipment shutoff valve with 1 8 NPT tap is an acceptable alternative to test gauge connection Pur chase the optional CSA design certified equipment shutoff valve from your dealer See Accessories page 26 Note If desired purchase a four sided brass trim kit for built in installations See Acces sories page 26 LOCATING FIREPLACE AX WARNING Maintain the mini mum clearances shown in Fig ures 7 and 8 If you can provide greater clearances from floor ceiling and joining wall You can recess firebox into the wall You can also position fireplace in the optional cabinet or corner mantels IMPORTANT Only use optional cabinet or corner mantels specified in this manual Purchase the op tional mantel from your dealer
41. ower outage you can use this heater as your primary heat source A WARNING A qualified ser vice person must install fireplace Follow all local codes Ay WARNING Never install the fireplace in a bedroom ora bathroom e in a recreational vehicle where curtains furniture clothing or other flammable objects are less than 36 inches from the front top or sides of the fireplace as a fireplace insert e in high traffic areas in windy or drafty areas A CAUTION This fireplace cre ates warm air currents These currents move heat to wall sur faces next to fireplace Installing fireplace next to vinyl or cloth wall coverings or operating fire place where impurities such as but not limited to tobacco smoke aromatic candles cleaning flu ids oilor kerosene lamps etc in the air exist may discolor walls or cause odors IMPORTANT Vent free fireplaces add mois ture to the air Although this is beneficial installing fireplace in rooms without enough ventilation air may cause mildew to form from too much moisture See Air for Combustion and Ventilation pages 5 through 7 Note Your vent free fireplace is designed to be used in zero clearance installations Wall or framing material can be placed directly against any exterior surface on the rear sides or top of your fireplace except where stand off spacers are integrally at tached If standoff spacers are attached to y
42. perates Not enough fresh air is available Low line pressure ODS pilot is partially clogged Open window and or door for ventilation Contact local natural gas company Clean ODS pilot see Cleaning and Maintenance page 19 Gas odor even when control knob is in OFF position Gas leak See Warning statement at top of page Control valve defective Locate and correct all leaks see Check ing Gas Connections page 16 Replace control valve Gas odor during combustion Foreign matter between control valve and burner Gas leak See Warning statement at top of page Take apart gas tubing and remove for eign matter Locate and correct all leaks see Check ing Gas Connections page 16 Moisture condensation noticed on windows Not enough combustion ventilation air www desatech com 22 Refer to Air for Combustion and Venti lation requirements page 5 107105 SPECIFICATIONS Btu Variable Type Gas Ignition Pressure Regulator Setting Inlet Gas Pressure in of water Maximum Minimum Dimensions Inches H x W x D Fireplace including hood and screws Carton Weight pounds Fireplace Shipping For purposes of input adjustment SERVICE HINTS When Gas Pressure Is Too Low e pilot will not stay lit e burner will have delayed ignition e fireplace will not produce specified heat You may feel your gas pressure is too low Ifso cont
43. r damaged Burner damaged Low inlet gas pressure Gas regulator defective AUN 1 Clean burner see Cleaning and Mainte nance page 19 or replace burner orifice Replace burner pressure Contact local natural gas company Replace gas regulator AUN Yellow flame during burner combustion 1 Not enough air 2 Gas regulator defective 1 Check burner for dirt and debris If found clean burner see Cleaning and Maintenance page 19 2 Replace gas regulator Slight smoke or odor during initial operation 1 Residues from manufacturing processes 1 Problem will stop after a few hours of operation Fireplace produces a whistling noise when burner is lit 1 Turning control knob to HI position when burner is cold 2 Air in gas line 3 Air passageways on fireplace blocked 4 Dirty or partially clogged burner orifice 1 Turn control knob to LO position and let warm up for a minute 2 Operate burner until air is removed from line Have gas line checked by local natural gas company 3 Observe minimum installation clear ances see pages 8 through 10 4 Clean burner see Cleaning and Mainte nance page 19 or replace burner orifice White powder residue forming within burner box or on adjacent walls or furniture 107105 1 When heated vapors from furniture pol ish wax carpet cleaners etc may turn into white powder residue www desatech com 21 1 Turn heater off when using f
44. re and contaminants This keeps them from going into fireplace controls If sediment trap is not installed or is installed wrong fireplace may not run properly 107105 INSTALLATION Continued CONNECTING EQUIPMENT OWNER S MANUAL A CAUTION Avoid damage to regulator Hold gas regulator with wrench when connecting itto gas piping and or fittings SHUTOFF VALVE TO HEATER CONTROL Installation Items Needed e Phillips screwdriver e sealant resistant to propane LP gas not 1 provided Remove fireplace screen Remove two screws that hold fireplace screen in place for shipping These screws are located near top of screen Discard screws Lift fireplace screen up and pull out to remove Remove screws that attach branch sup port to fireplace see Figure 24 Care fully lift up branch support and remove from fireplace see Figure 24 Route flexible gas line included from fireplace control to equipment shutoff valve through side or rear access holes in outer casing NOTICE Most building codes do not permit concealed gas con nections A flexible gas line is provided to allow accessibility from the fireplace see Figure 25 The flexible gas supply line con nection to the equipment shutoff valve should be accessible 107105 Branch Support Apply pipe joint sealant lightly to male threads of gas connector attached to flexible gas line equipment shutoff valve see Figure 25
45. s firmly Louver Hood Tab Baffle Firebox Top 107105 AIR FOR COMBUSTION AND VENTILATION AX WARNING This heater shall not be installed inaconfined 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 Today s homes are built more energy effi cient than ever New materials increased insulation and new construction methods helpreduce heat lossin homes Home owners weather strip and caulk around windows and doors to keep the cold air out and the warm air in During heating months home owners want their homes as airtight as possible While it is good to make your home energy efficient your home needs to breathe Fresh air must enter your home All fuel burning appliances need fresh air for proper com bustion and ventilation Exhaust fans fireplaces clothes dryers and fuel burning appliances draw air from the house to operate You must provide ad equate fresh air for these appliances This will insure proper venting of vented fuel burning appliances 107105 OWNER S MANUAL PROVIDING ADEQUATE VENTILATION The following are excerpts from National Fuel Gas Code ANSI Z223 1 NFPA 54 Sec tion 5 3 Air for Combustion and Ventilation All spaces in homes fall into one of the three following ventilation classi
46. see Acces sories page 26 CEILING 36 Minimum m6 Minimum From Sides Of Fireplace Right Side Side Left 0 Minimum To Top Surface Of Carpeting Tile Or Other Combustible Material Figure 7 Mounting Clearances As Viewed From Front of Fireplace Shown Built In The Wall CEILING Top Of Mantel Can Be Flush With Wall Minimum Right Side 0 Minimum To Top Surface Of Carpeting Tile Or Other Combustible Material Figure 8 Mounting Clearances As Viewed From Front of Fireplace Shown with Optional Mantel Note When installing fireplace directly on carpeting tile or other combustible material other than wood flooring the fireplace shall be installed on a metal or wood panel extend ing the full width and depth of the fireplace A CAUTION If you install the fireplace in a home garage e fireplace pilot and burner must beatleast 18 inches above floor locate fireplace where moving vehicle will not hit it 107105 INSTALLATION Continued For convenience and efficiency install fireplace e where there is easy access for operation inspection and service e in coldest part of room An optional blower kit is available from your dealer See Accessories page 26 If planning to use blower locate fireplace near an electrical outlet BUILT IN FIREPLACE INSTALLATION Built in installation of this
47. sition Note You may be running this fire place for the first time after hooking up to gas supply If so the control knob may need to be pressed in for 30 seconds or more This will allow air to bleed from the gas system e If control knob does not pop up when released contact a qualified service person or gas supplier for repairs With control knob pressed in push down and release ignitor button This will light pilot The pilot is at tached to the front of burner If needed keep pressing ignitor but ton until pilot lights Note If pilot does not stay lit refer to Troubleshooting pages 20 through 22 Also contact a qualified service person or gas supplier for repairs Until repairs are made light pilot with match To light pilot with match see Manual Lighting Procedure page 18 7 Keep control knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob Note If pilot goes out repeat steps 3 through 7 This fireplace has a safety interlock system Wait one 1 minute before lighting pilot again 8 Turn control knob counterclockwise to desired heating level The main burner should light Set control knob to any heat level between HI and LO CAUTION Do nottry to adjust heating levels by using the equip ment shutoff valve Thermocouple Ignitor Electrode Pilot Burner Figure 29 Pilot Continued fri NATURAL GAS VENT FREE FIREPLACE SYST
48. te valve cover shield clockwise and slide out IMPORTANT Do not remove shoul der screw on the left side of valve cover shield Slide the valve cover shield off of the shoulder screw see Figure 17 Note If you do not have a short Phillips screwdriver the screen twigs and branch support must be removed so a longer screwdriver may be used See Connecting Fireplace To Gas Sup ply page 15 and follow step 2 Shoulder Screw Remove Screw Valve Cover Shield Bottom Louver Snap Assembly Bushings Figure 17 Removing Valve Cover Shield Installing Blower Assembly Ay CAUTION Label all wires prior to disconnection when ser vicing controls Wiring errors can cause improper and danger ous operation A CAUTION Verify proper op eration after servicing Note If you are using a mantel with your heater use the following instructions If your heater is built in see For Built In In stallation on page 13 1 Install snap bushings found in hardware kit into both holes in rear of valve cover shield 2 Make sure the wire harness is firmly connected to the terminals on the blower bracket assembly 3 Note the wire locations on back of AUTO OFF ON switch The terminals on back of switch are numbered 1 2 and 3 Carefully remove red wire from terminal and blue wire from terminal 3 Black wire can remain on middle terminal 2 see Figure 18 page 12 Continued NATURAL GAS
49. to Solid Floor For attaching base to solid floors concrete or masonry Note Floor anchors and mounting screws are in hardware package The hardware package is provided with fireplace 1 Drill holes at marked locations using 5 16 drill bit For solid floors con crete or masonry drill at least 1 deep Fold floor anchor as shown in Figure 22 3 Insert floor anchor wings first into hole Tap anchor flush to floor 4 Insert mounting screws through base and into floor anchors 5 Tighten screws until base is firmly fas tened to floor Figure 22 Folding Anchor CONNECTING TO GAS SUPPLY Ay WARNING This appliance re quires a 45 male flare fitting 5 8 18 UNF Unified National Fine Thread inlet connection and the flexible gas line provided A WARNING A qualified ser vice person must connect fire place to gas supply Follow all local codes A WARNING Never connect fireplace to private non utility gas wells This gas is commonly known as wellhead gas IMPORTANT Check gas line pressure be fore connecting fireplace to gas line Gas line pressure must be no greater than 14 inches of water If gas line pressure is higher fireplace regulator damage could occur CSA Design Certified Equipment Shutoff Valve With 1 8 NPT Tap From Gas Meter 5 W C to 3 Minimum SS wes Cap Pipe Tee Nipple Joint I Sediment Trap Figure 23 Gas Connecti
50. urniture polish wax carpet cleaners or similar products Continued fii NATURAL GAS VENT FREE FIREPLACE SYSTEM TROUBLESHOOTING Continued building A WARNING If you smell gas e Shut off gas supply Do not try to light any appliance e Do not touch any electrical switch do not use any phone in your e 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 IMPORTANT Operating fireplace where impurities in air exist may create odors Cleaning supplies paint paint remover cigarette smoke cements and glues new carpet or textiles etc create fumes These fumes may mix with combustion air and create odors OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Fireplace produces a clicking ticking noise just after burner is lit or shut off 1 Metal expanding while heating or con tracting while cooling 1 This is common with most fireplaces If noise is excessive contact qualified ser vice person Fireplace produces unwanted odors Fireplace burning vapors from paint hair spray glues etc See IMPORTANT statement above Gas leak See Warning statement at top of page Ventilate room Stop using odor caus ing products while fireplace is running Locate and correct all leaks see Check ing Gas Connections page 16 Fireplace shuts off in use ODS o
51. ware packet 3 Align shim under adjusting plate as shown in Figure 15 4 Slide one end of adjusting plate shim in slot on mitered edge of top brass trim see Figure 15 5 Slide other end of adjusting plate shim in slot on mitered edge of side brass trim see Figure 15 6 While firmly holding edges of brass trim together tighten both set screws on the adjusting plate with slotted screwdriver Repeat steps 1 through 6 for other corner Set brass assembly aside for later in stallation Top Brass Set Trim Mitered Edge Sr Side Brass a T T Figure 15 Assembling Brass Trim Adjusting Plate 107105 OWNER S MANUAL Branch Support INSTALLING BLOWER ACCESSORY GA3450T Removing Upper Louver Assembly To install the blower accessory you must first remove the upper louver assembly 1 Lift screen off heater 2 Remove 4 screws from louver assem bly see Figure 16 Save these screws 3 Pull louver assembly straight out from the cabinet Be careful not to scratch the paint Set louver assembly and screws aside Blower Bracket Mounting Holes Upper Louver Assembly Brass Screws Figure 16 Removing Upper Louver Assembly Removing Valve Cover Shield 1 Open bottom louver assembly by swinging the assembly down see Fig ure 17 2 Using short Phillips screwdriver re move the screw under the center of the branch support Rota

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