Desa VN1000BTA User's Manual
Contents
1. Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department IMPORTANT Operating heater 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 Heater 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 heaters If noise is excessive contact qualified ser vice person Heater produces unwanted odors Heater 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 causing products while heater is running Locate and correct all leaks see Check ing Gas Connections page 10 Heater shuts off in use ODS operates Not enough fresh air is available 2 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 12 Gas odor even when control knob is in OFF position Gasleak See Warning statement at top of page Control valve defective Locate and correct all leaks see Chec2. 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 6x10 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 additional fresh air See Ventilation Air From Outdoors page 6 If your home does not meet all of the three criteria above proceed to Determining Fresh Air flow For Heater Location page 5 Confined and Unconfined Space The National Fuel Gas Code ANS Z223 1 defines a confined space as a space whose volume is less than 50 cubic feet per 1 000 Btu per hour 4 8 m3 per kw of the aggre gate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 50 cubic fee
3. Check burner for dirt and debris If found clean burner see Cleaning and Maintenance page 12 Contact local natural gas company Replace gas regulator Slight smoke or odor during initial operation 1 Residues from manufacturing processes Problem will stop after a few hours of operation Heater produces a whistling noise when 1 Turning control knob to HI position burner is lit when burner is cold 2 Air in gas line 3 Air passageways on heater blocked 4 Dirty or partially clogged burner orifice Turn control knob to LO position and let warm up for a minute Operate burner until air is removed from line Have gas checked by local natural gas company Observe minimum installation clear ances see Figure 4 page 7 Clean burner see Cleaning and Mainte nance page 12 or replace burner orifice White powderresidue forming withinburner 1 When heated vapors from furniture pol box or on adjacent walls or furniture ish wax carpet cleaners etc turn into white powder residue www desatech com 14 Turn heater off when using furniture polish wax carpet cleaners or similar products 104265 TROUBLESHOOTING Continued OWNER S MANUAL building Ad WARNING If you smell gas Shut off gas supply Do not try to light any appliance Do not touch any electrical switch do not use any phone in your Immediately call your gas supplier from a neighbor s phone
4. DS If installing bottom mounting screw into hollow or solid wall install wall anchor Follow steps 1 through 5 un der Attaching To Wall Anchor Method If installing bottom mounting screw into wall stud drill hole at marked lo cation using 9 64 drill bit 5 Replace heater on wall 6 Insert bottom anchor screw through back panel into bottom anchor or drilled hole see Figure 11 7 Tighten screw until heater is firmly se cured to wall Do not over tighten Note Do not replace front panel at this time Replace front panel after making gas connections and checking for leaks see pages 9 and 10 Figure 11 Installing Bottom Mounting Screw 104265 INSTALLATION Continued CONNECTING TO GAS SUPPLY AX WARNING This appliance re quires a 3 8 NPT National Pipe Thread inlet connection to the pressure regulator Ay WARNING A qualified ser vice person must connect heater to gas supply Follow all local codes A WARNING Never connect heater to private non utility gas wells This gas is commonly known as wellhead gas IMPORTANT Check gas line pressure be fore connecting heater to gas line Gas line pressure must be no greater than 14 inches of water If gas line pressure is higher heater regulator damage could occur A CAUTION Use only new black iron or steel pipe Internally tinned copper tubing may be used in certain areas Check your local codes U
5. Ignitor Electrode Burner Pilot Tubing Injector 1 piece Hex Nut Pressure Regulator Burner Tubing Regulator Tubing Thermostat Gas Valve Cabinet Piezo Ignitor Pilot Shield Screw 6 x 5 16 PO e ae ln 2n cn nnn nn nnn pon nga an a pa ap PARTS AVAILABLE NOT SHOWN 102471 01 100642 02 Control Position Label Assembly Hardware VANGUARD BLUE FLAME 10 000 BTU NATURAL GAS HEATER SPECIFICATIONS VN1000BTA Btu Variable 5 000 10 000 Type Gas Natural Only Ignition Piezo Pressure Regulator Setting 3 W C Inlet Gas Pressure inches of water Heater Dimensions Includes knobs and grill Shipping Weight pounds 19 TECHNICAL SERVICE You may have further questions about in stallation operation or troubleshooting If so contact DESA International s Technical Service Department at 1 800 323 5190 You can also visit DESA International s technical service web site at www desatech com SERVICE HINTS When Gas Pressure Is Too Low pilot will not stay lit burner will have delayed ignition heater will not produce specified heat When Gas Quality Is Bad pilot will not stay lit burner will produce flames and soot heater will backfire when lit You may feel your gas pressure is too low or gas quality is bad If so contact your local natural gas supplier 10 5 Max 4 Min 21 5 H x 13 5 W x 7 D SERVICE PUBLICATIONS Youcan purchase a service manual
6. clean Inspect these areas of heater before each use Have heater inspected yearly by a quali fied service person Heater may need more frequent cleaning due to excessive lint from carpeting bedding material pet hair etc ODS PILOT AND BURNER ORIFICE Use a vacuum cleaner pressurized air or small soft bristled brush to clean CLEANING BURNER PILOT AIR INLET HOLE We recommend that you clean the unit every 2 500hours ofoperationorevery three months Wealsorecommend that you keep the burner tube and pilot assembly clean and free of dust and dirt To clean these parts we recommend using compressed air no greater than 30 PSI Yourlocal computer store hardware store or home center may carry compressed air in a can You can use a vacuum cleaner in the blow position If using compressed air in a can please follow the directions on the can If youdon tfollow directions onthe 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 Inspect burner pilot for dust and dirt Blow air through the ports slots and holes in the burner 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 21 With the unit off lightly blow air through the air inlet hole You
7. first into hole Tap anchor flush to wall 4 For thin walls 1 2 or less insert red key into wall anchor Push red key to pop open anchor wings see Figure 7 IMPORTANT Do not hammer key For thick walls over 1 2 thick or solid walls do not pop open wings 5 Tighten two screws until 1 16 space thickness of penny is between screwheads and wall see Figure 8 Figure 6 Folding Anchor Thin Walls 1 4 to 1 2 thick TEN Figure 7 Popping Open Anchor Wings For Thin Walls Thin or Thick Wall e thick wall shown 1 16 Space SG Solid Wall Figure 8 Tightening Anchors Placing Heater On Mounting Screws 1 Locate two keyhole slots on back panel of heater see Figure 9 2 Place large openings of slots over screwheads Slide heater down until Screws are in small portion of slots NL Keyhole Slots Figure 9 Location Of Keyhole Slots On Back Panel Of Heater Removing Front Panel Of Heater 1 Remove two screws near bottom cor ners of front panel 2 Lift straight up on grill guard until it stops Grill guard will slide up about 1 4 3 Pull bottom of front panel forward then down ve Figure 10 Removing Front Panel Of Heater Installing Bottom Mounting Screw 1 Locate bottom mounting hole This hole is near bottom on back panel of heater see Figure 11 Mark screw location on wall Remove heater from wall JS
8. 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 ANS 2223 1 Section 5 3 or applicable local codes Continued 104265 5 VANGUARD BLUE FLAME 10 000 BTU NATURAL GAS HEATER AIR FOR COMBUSTION AND VENTILATION Continued VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space When ventilating to an adjoining unconfined space you must pro vide two permanent openings one within 12 of the ceiling and one within 12 of the floor on the wall connecting the two spaces see options 1 and2 Figure 2 You can also remove door into adjoining room see op tion 3 Figure 2 Follow the National Fuel Gas Code NFPA 54 ANS Z223 1 Section 5 3 Air for Combustion and Ventilation for required size of ventilation grills or ducts AX WARNING Rework work sheet adding the space of the adjoining unconfined space The combined spaces must have enough fresh air to supply all appliances in both spaces Ventilation Air From Outdoors Provide ext
9. may blow through adrinking straw if compressed air is not available Figure 21 Pilot Inlet Air Hole CABINET Air Passageways Use a vacuum cleaner or pressurized air to clean Exterior Use a soft cloth dampened with a mild soap and water mixture Wipe the cabi net to remove dust 104265 TROUBLESHOOTING Note For additional help visit DESA International s technical service web site at www desatech com OWNER S MANUAL AX WARNING Turn off heater andletcoolbefore servicing Only aqualified 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 positioned wrong 2 Ignitor electrode broken 3 Ignitor electrode not connected to igni tor cable 4 Ignitor cable pinched or wet 5 Piezo ignitor nut is loose 6 Broken ignitor cable 7 Bad piezo ignitor 1 Replace ignitor 2 Replace ignitor 3 Reconnect ignitor cable 4 Free ignitor cable if pinched by any metal or tubing Keep ignitor cable dry 5 Tighten nut holding piezo ignitor to heater cabinet Nut is located inside heater cabinet at top 6 Replace ignitor cable 7 Replace piezo ignitor When ignitor
10. of 1 2 psig will damage heater regulator Cap off open end of gas pipe where equipment shutoff valve was connected Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter Check all joints of gas supply piping system Apply mixture of liquid soap and water to gas joints Bubbles form ing show a leak Correct all leaks at once 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 2 Close equipment shutoff valve see Fig ure 13 Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter Check all joints from gas meter to equip ment shutoff valve see Figure 14 Ap ply mixture of liquid soap and water to gas joints Bubbles forming show a leak Correct all leaks at once 2 Open main gas valve located on or near gas meter 3 Make sure control knob of heater is in the OFF position 4 Check all joints from equipment shutoff valve to control valve see Figure 14 Apply mixture of liquid soap and wa ter to gas joints Bubbles forming show a leak 5 Correct all leaks at once A 6 Light heater see Operating Heater pages 10 and 11 Check the rest of the internal joints for leaks B 7 Tur
11. or fittings Pressure Regulator Heater Cabinet Tee Joint Reducer Bushing to 1 8 NPT Test Gauge Connection SORA 1 8 NPT Plug Tap Tee Joint Pipe Sediment Trap Cap ACSA AGA design certified equipment shutoff valve with 1 8 NPT tap is an acceptable alternative to test gauge connection Purchase the optional CSA AGA design certified equipment shutoff valve from your dealer See Accessory page 18 Continued VANGUARD BLUE FLAME 10 000 BTU NATURAL GAS HEATER OPERATING INSTALLATION Continued CHECKING GAS CONNECTIONS Ay WARNING Test all gas pip ing and connections for leaks after installing or servicing Cor rect all leaks at once A WARNING Never use an open flame to check fora leak Apply a mixture of liquid soap and water to all joints Bubbles forming show a leak Correct all leaks at once Pressure Testing Heater Gas Connections 1 Open equipment shutoff valve see Fig ure 13 HEATER FOR YOUR SAFETY READ BEFORE LIGHTING 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 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
12. warranty write DES A INTERNATIONAL 2701 Industrial Drive P O Box 90004 Bowling Green KY 42102 9004 www desatech com 104265 01 NOT A UPC
13. ING HEATER TO WALL Marking Screw Locations 1 Determine where you will locate heater FLOOR A WARNING Maintain minimum clearances shown in Figure 5 If you can provide greater clear ances from floor and joining wall 2 Marktwo mounting screw locations on wall see Figure 5 I 8 7 8 7 3 4 Minimum To Maintain 6 4 Clearance From Wall 20 1 4 Minimum To Maintain 3 Clearance From Floor Mounting Screw Locations JOINING WALL FLOOR Figure 5 Mounting Screw Locations incoldest part of room 104265 7 Continued VANGUARD BLUE FLAME 10 000 BTU NATURAL GAS HEATER INSTALLATION Continued Installing Two Mounting Screws Note Wall anchors and mounting screws are in hardware package The hardware pack age is provided with heater Attaching To Wall Stud Method For attaching mounting screw to wall stud 1 Drill hole at marked location using 9 64 drill bit Insert mounting screw into wall stud 3 Tighten screw until 1 16 space thick ness of penny is between screwhead and wall Attaching To Wall Anchor Method Follow instructions below to attach mount ing screws to hollow walls wall areas be tween studs or solid walls concrete or masonry 1 Drill holes at marked locations using 5 16 drill bit For solid walls concrete or masonry drill at least 1 4 deep Fold wall anchor see Figure 6 3 Insert wall anchor wings
14. S 1 LIGHTING STOP Read the safety information column 3 page 10 Make sure equipment shutoff valve is fully open Turn control knob clockwise w to the OFF position Wait five 5 minutes to clear out any gas Then smell for gas including near the floor If you smell gas STOP Follow B in the safety in formation at the top of column 3 page 10 If you don t smell gas go to the next step Turn control knob counterclockwise FK to the PILOT position Press in control knob for five 5 sec onds see Figure 15 Note You may be running this heater for the first time after hook ing up to gas supply If so the con trol knob may need to be pressed in for 30 seconds This will allow air to bleed from the gas system f 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 attached to the front of burner The pilot can be seen through the glass panel If needed keep pressing ignitor button until pilot lights Note If pilot does not stay lit refer to Troubleshooting pages 13 through 15 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 Keep control knob pressed in for 30 seconds after lighting pilot After 30
15. VANGUARD BLUE FLAME VENT FREE NATURAL GAS HEATER OWNER S OPERATION AND INSTALLATION MANUAL f Rey MN VN1000BTA 10 000 Btu Hr Thermostatically Controlled Models WARNING If the information in this manual is not followed exactly a fire or explosion may result caus ing property damage personal injury or loss of life Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS 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 If you cannot reach your gas supplier call the fire department Installation and service must be performed by a qualified installer service agency or the gas supplier WARNING Improper installa tion adjustment alteration service or maintenance can cause injury or property dam age Refer to this manual for correct installation and opera tional procedures For assis tance or additional informa tion consult a qualified in staller service agency or the gas supplier WARNING Thisis anunvented gas fired heater It uses air oxygen from the room in whichitis installed Provisions for adequate combustion and ventilation air must be pro vided Refer to Air for Com bustion and Ve
16. button is pressed 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 installed 5 ODS pilot is clogged 6 Gas regulator setting is not correct 1 Turn on gas supply or open equipment shutoff valve 2 Turn control knob to PILOT position 3 Press in control knob while in PILOT position 4 Continue holding down control knob Repeat igniting operation until air is re moved 5 Clean ODS pilot see Cleaning and Maintenance page 12 or replace ODS pilot assembly 6 Replace gas regulator ODS pilot lights but flame goes out when control knob is released 104265 1 Control knob not fully pressed in 2 Control knob not pressed in long enough 3 Safety interlock system has been trig gered Equipment shutoff valve not fully open Thermocouple connection loose at con trol valve 6 Pilot flame not touching thermocouple 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 13 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
17. e replacement part number 104265 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 make no other warranty expressed or implied LIMITED WARRANTY VENT FREE RESIDENTIAL GAS HEATERS 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 heater 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 heater MUST be installed by a qualified installer in accordance with all local codes and instruct
18. er 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 heater A WARNING Any change to this heater or its controls can be dangerous A WARNING Do not use any accessory not approved for use with this heater 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 heater Surface of heater becomes very hot when running heater Keep children and adults away from hot surface to avoid burns or clothing ignition Heater will re main hot for a time after shut down Allow surface to cool be fore touching Carefully supervise young chil dren when they are in the same room with heater Make sure grill guard is in place before running heater Keep the appliance area clear and free from combustible materials gasoline and other flammable vapors 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 shut off gas supply do not try to light any appliance do not touch any electrical switch do not use a
19. f space 50 cu ft Maximum Btu Hr the space can support Example 2304 cu ft volume of space 50 cu ft 46 1 or 46 100 maximum Btu Hr the space can support 3 Add the Btu Hr of all fuel burning appliances in the space Vent free heater Btu Hr Gas water heater Btu Hr Gas furnace Btu Hr Example Vented gas heater Btu Hr Gas water heater 40 000 Btu Hr Gas fireplace dogs Btu Hr Vent free heater 10 000 Btu Hr Other gas appliances Btu Hr Tu Oe B 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 46 100 Btu Hr maximum the space can support 50 000 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 6 B Vent room directly to the outdoors See Ventilation Air From Outdoors page 6 C Install a lower Btu Hr heater if lower Btu Hr size
20. from the address listed on the back page of this manual Send a check for 5 00 payable to DESA International ACCESSORY Purchase this heater accessory from your local dealer If they cannot supply this ac cessory call DESA International s Parts Department at 1 800 972 7879 for referral information You can also write to the ad dress listed on the back page of this manual EQUIPMENT SHUTOFF VALVE GA5010 Equipment shutoff valve with 1 8 NPT tap REPLACEMENT PARTS Note Use only original replacement parts This will protect your warranty coverage for parts replaced under warranty PARTS UNDER WARRANTY Contact authorized dealer from whom you purchased this product If they cannot sup ply original replacement part s call DESA International s Technical Service Depart ment at 1 800 323 5190 for referral infor mation When contacting your dealer or DESA International have ready your name and address model and serial numbers of your heater how heater was malfunctioning type of gas used propane LP or natural gas purchase date Usually we will ask you to return the defec tive part to the factory PARTS NOT UNDER WARRANTY Contact authorized dealers of this product If they cannot supply original replacement part s call DESA International s Parts Department at 1 800 972 7879 for referral information When calling DESA Interna tional have ready model number of your heater th
21. gure 18 turn heater off see To Turn Off Gas to Appliance page 11 see Troubleshooting pages 13 through 15 Pilot Burner Figure 17 Correct Pilot Flame Pattern Thermocouple Pilot Burner Thermocouple Figure 18 Incorrect Pilot Flame Pattern BURNER FLAME PATTERN Figure 19 shows a correct burner flame pattern Figure 20 shows anincorrect burner flame pattern The incorrect burner flame pattern shows yellow tipping ofthe flame It also shows the flame higher than 1 2 the glass panel height A WARNING If yellow tipping occurs your heater could pro duce increased levels of carbon monoxide If burner flame pat tern shows yellow tipping see the following instructions NOTICE Do not mistake orange flames with yellow tipping Dust or other fine particles enter the heater and burn causing brief patches of orange flame If burner flame pattern is incorrect as shown in Figure 20 turn heater off see To Turn Off Gas to Appliance page 11 seeTroubleshooting pages 13 through 15 boo GLASS HEIGHT Figure 19 Correct Burner Flame Pattern Yellow Tipping AAA AAT ay l 1 2 GLASS HEIGHT Figure 20 Incorrect Burner Flame Pattern CLEANING AND MAINTENANCE AX WARNING Turn off heater and let cool before cleaning A CAUTION You must keep control areas burner and circu lating air passageways of heater
22. he 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 Selecting the HI setting will cause the burner to remain fully on without modu lating down in most cases Note The thermostat sensing bulb mea sures the temperature of air near the heater cabinet This may notalways agree with room temperature depending on housing construction installation loca tion room size open air temperatures etc Frequent use of your heater will let you determine your own comfort levels MANUAL LIGHTING PROCEDURE 1 Remove front panel see Figure 10 page 8 2 Follow steps 1 through 5 under Light ing Instructions 3 With control knob pressed in strike match Hold match to pilot until pi lot lights 4 Keep control knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob Follow step 8 under Lighting Instructions 5 Replace front panel VANGUARD BLUE FLAME 10 000 BTU NATURAL GAS HEATER INSPECTING BURNER Check pilot flame pattern and burner flame pattern often PILOT FLAME PATTERN Figure 17 shows a correct pilot flame pat tern Figure 18 shows an incorrect pilot flame pattern The incorrect pilot flame is not touching the thermocouple This will cause the thermocouple to cool When the thermocouple cools the heater will shut down If pilot flame pattern is incorrect as shown in Fi
23. heater above elevations of 4 500 feet could cause pilot outage 104265 PRODUCT IDENTIFICATION Ignitor Button OWNER S MANUAL Control Knob Grill Guard Glass Panel Front E Panel Figure 1 Vent Free Natural Gas Heater LOCAL CODES Install and use heater with care Follow all local codes In the absence of local codes use the latest edition of The National Fuel Gas Code ANS Z223 1 also known as NFPA 54 Available from American National Standards Institute Inc 1430 Broadway New York NY 10018 National Fire Protection Association Inc Batterymarch Park Quincy MA 02269 104265 Heater Cabinet UNPACKING 1 Remove heater from carton 2 Remove all protective packaging ap plied to heater for shipment 3 Check heater for any shipping damage If heater is damaged promptly inform dealer where you bought heater PRODUCT FEATURES SAFETY PILOT This heater has a pilot with an Oxygen Depletion Sensing ODS safety shutoff sys tem The ODS pilot is a required feature for vent free room heaters The ODS pilot shuts off the heater if there is not enough fresh air PIEZO IGNITION SYSTEM This heater has a piezo ignitor This system requires no matches batteries or other sources to light heater VANGUARD BLUE FLAME 10 000 BTU NATURAL GAS HEATER AIR FOR COMBUSTION AND VENTILATION AX WARNING This heater sha
24. insert in high traffic areas in windy or drafty areas A CAUTION This heater cre ates warm air currents These currents move heat to wall sur faces next to heater Installing heater next to vinyl or cloth wall coverings or operating heater where impurities such as to bacco smoke aromatic candles cleaning fluids oil or kerosene lamps etc in the air exist may discolor walls IMPORTANT Vent free heaters add mois ture to the air Although this is beneficial installing heater in rooms without enough ventilation air may cause mildew to form from too much moisture See Air for Com bustion and Ventilation pages 4 through 6 A CAUTION If you install the heater in a home garage heater pilot and burner must be at least 18 inches above floor locateheater where moving ve hicle will not hit it Forconvenience and efficiency install heater where there is easy access for operation inspection and service CEILING 36 Minimum 6 Minimum From E z Sides Of n Heater UII Right Left Side Side LUUD MERC SERE Minimum To Top Surface Of Carpeting Tile Or Other Combustible Material Figure4 Mounting Clearances As Viewed From Front of Heater THERMOSTAT SENSING BULB The thermostat sensing bulb is located in side the heater Do not move this bulb dur ing installation or operation of the heater INSTALL
25. ions 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 MERCHANTA BILITY 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
26. k ing Gas Connections page 10 Replace control valve Gas odor during combustion Foreign matter between control valve and burner Gasleak 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 10 Moisture condensation noticed on windows 104265 Not enough combustion ventilation air www desatech com 15 Refer to Air for Combustion and Venti lation requirements page 4 VANGUARD BLUE FLAME 10 000 BTU NATURAL GAS HEATER ILLUSTRATED PARTS BREAKDOWN VN1000BTA ODS PILOT 16 104265 PARTS LIST VN1000BTA 104265 OWNER S MANUAL This list contains replaceable parts used in your heater When ordering parts follow the instructions listed under Replacement Parts on page 18 of this manual PART NUMBER 098304 01 099467 03 099318 04 101108 01 102017 02 098260 11 098532 06AA M11084 38 098352 03BR 098271 03 098249 01 100701 03 098514 01 098594 01 104263 01 099387 11 104259 05 NJF 8C 099415 14 104261 01 104264 01 098522 11 102571 05 097159 04 099553 01 098303 02 ONOoaAARWBN DESCRIPTION Screw 10 x 3 8 Front Panel Assembly Grill Guard Grill Guard Clip Bottom Glass Retainer Glass Panel Top Glass Retainer Screw 8 x 3 8 Deflector Unit Ignitor Cable Nut M5 ODS Pilot Assembly Thermocouple
27. ll not be installed ina confined space or unusually tight construction unless provisions are provided foradequate 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 efficient than ever New materials increased insula tion and new construction methods help re duce heat loss inhomes Homeowners 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 PROVIDING ADEQUATE VENTILATION The following are excerpts from National Fuel Gas Code NFPA 54 ANS Z223 1 Sec tion 5 3 Air for Combustion and Ventilation All spaces in homes fall into one of the three following ventilation classifications 1 Unusually Tight Construction 2 Unconfined Space 3 Confined Space The information on pages 4 through 6 will help you classify your space and provide
28. n off heater see To Turn Off Gas To Appliance page 11 8 Replace front panel Open Equipment Shutoff Valve Closed Figure 13 Equipment Shutoff Valve Control Valve Location TRAMA 7 Gas Meter A j DULL TAT D L iif Equipment S Shutoff Valve Figure 14 Checking Gas Joints 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 supplier 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 control which has been un der water 104265 OPERATING HEATER Continued INSTRUCTION
29. ntilation sec tion on page 4 in this manual This appliance may be installed in an aftermarket permanently located manufac tured 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 VANGUARD BLUE FLAME 10 000 BTU NATURAL GAS HEATER SAFETY INFORMATION A WARNINGS IMPORTANT Read this owner s manual carefully and completely before trying to assemble oper ate or service this heater Im proper use of this heater can cause serious injury or death from burns fire explosion and car bon monoxide poisoning AX DANGER Carbon monoxide poisoning may lead to death Carbon Monoxide Poisoning Early signs of carbon monoxide poisoning resemble the flu with headaches dizziness and or nau sea If you have these signs the heater may not be working properly Get fresh air at once Have heater 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 odor making agent is added to natural gas The odor helps you detecta natural gas leak Howev
30. ny 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 Heater shall not be installed in a bath room This heater needs fresh outside air ven tilation to run properly This heater has an Oxygen Depletion Sensing ODS safety shutoff system The ODS shuts down the heater if not enough fresh air is available See Air for Combustion and Ventilation pages 4 through 6 Keep all air openings in front and bot tom of heater clear and free of debris This will insure enough air for proper combustion If heater shuts off do not relight until you provide fresh outside air If heater keeps shutting off have it serviced Do not run heater where flammable liquids or vapors are used or stored under dusty conditions 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 Do not use heater if any part has been under water Immediately call a quali fied 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 off heater and let cool before ser vicing Only a qualified service person should service and repair heater Operating
31. ra 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 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 NFPA 54 ANS Z223 1 Section 5 3 Air for Combustion and Ventilation for required size of ventilation grills or ducts IMPORTANT Do not provide openings for inlet or outlet air into attic if attic has a thermostat controlled power vent Heated air entering the attic will activate the power vent Ventilation Grills into Adjoining Room Option 1 Or Remove Door into Adjoining Room Option 3 12 Ventilation Grills Into Adjoining Room Option 2 AN WT im L1 Figure 2 Ventilation Air from Inside Building ALEN Ventilated Attic Outlet Air Inlet Air To Attic _ Inlet Air Ventilated Crawl Space Figure 3 Ventilation Air from Outdoors 104265 OWNER S MANUAL 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
32. 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 12 or replace ODS pilot assembly Replace thermocouple Replace control valve on Continued VANGUARD BLUE FLAME 10 000 BTU NATURAL GAS HEATER TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Burner does not light after ODS pilot is lit 1 Burner orifice is clogged 1 Clean burner orifice see Cleaning and 2 Burner orifice diameter is too small Inlet gas pressure is too low W Maintenance page 12 or replace burner orifice Replace burner orifice Contact local natural gas company Delayed ignition of burner Manifold pressure is too low 2 Burner orifice is clogged Contact local natural gas company Clean burner orifice see Cleaning and Maintenance page 12 or replace burner orifice Burner backfiring during combustion Burner orifice is clogged or damaged Inlet gas pressure is too low Burner damaged Gas regulator defective AUN AUN Clean burner orifice see Cleaning and Maintenance page 12 or replace burner orifice Contact local natural gas company Replace burner Replace gas regulator Yellow flame during burner combustion Not enough air 2 Inlet gas pressure is too low 3 Gas regulator defective
33. run system s circulating blower while using heater This will help circu late the heat throughout the house In the event of a power outage you can use this heater as your primary heat source Ay WARNING A qualified ser vice person must install heater Follow all local codes CHECK GAS TYPE Use only natural gas If your gas supply is not natural do not install heater Call dealer where you bought heater for proper type heater INSTALLATION ITEMS Before installing heater make sure you have the items listed below piping check local codes sealant resistant to propane LP gas equipment shutoff valve ground joint union test gauge connection sediment trap tee joint pipe wrench A CSA AGA design certified equipment shutoff valve with 1 8 NPT tap is an ac ceptable alternative to test gauge connec tion Purchase the optional CSA AGA de sign certified equipment shutoff valve from your dealer See Accessory page 18 LOCATING HEATER This heater is designed to be mounted on a wall AX WARNING Maintain the mini mum clearances shown in Figure 4 If youcan provide greater clear ances from floor ceiling and join ing wall AX WARNING Never install the heater ina bathroom inarecreational vehicle where curtains furniture clothing or other flammable objects are less than 36 inches from the front top or sides of the heater as a fireplace
34. se pipe 3 8 diameter or greater to allow proper gas volume to heater If pipe is too small undue loss of pressure will occur 104265 OWNER S MANUAL Installation mustinclude an equipment shutoff valve ground joint union and plugged 1 8 NPT tap Locate NPT tap within reach for test gauge hook up NPT tap must be upstream from heater see Figure 12 IMPORTANT Install an equipment shutoff valve in an accessible location The equip ment shutoff valve is for turning on or shutting off the gas to the appliance Apply pipe joint sealant lightly to male threads This will prevent excess sealant from going into pipe Excess sealant in pipe could result in clogged heater valves 3 8 NPT Pipe Nipple c Ground Joint Union Equipment Shutoff Valve From Gas Meter 4 W C to 10 5 W C Pressure 3 Mum Mer Nip Figure 12 Gas Connection A CAUTION Use pipe joint seal ant that is resistant to liquid pe troleum LP gas Install sediment trap trap in supply line as shown in Figure 12 Locate sediment trap where it is within reach for cleaning Locate sediment trap where trapped matter is not likely to freeze A sediment trap traps mois ture and contaminants This keeps them from going into heater controls If sediment trap is not installed or is installed wrong heater may not run properly IMPORTANT Hold pressure regulator with wrench when connecting it to gas pip ing and
35. seconds release control knob f control knob does not pop up when released contact a qualified service person or gas supplier for repairs 104265 OWNER S MANUAL Note If pilot goes out repeat steps 3 through 7 This heater has a safety interlock system Wait one 1 minute before lighting pilot again 8 Turncontrol knob counterclockwise FK to desired heating level The main burner should light Set control knob to any heat level between HI and LO A CAUTION Do nottry to adjust heating levels by using the equip ment shutoff valve Control Knob Ignitor Button IGNITOR 7 Figure 15 Control Knob In The OFF Position Ignitor Electrode Thermocouple Figure 16 Pilot E TO TURN OFF GAS TO APPLIANCE Shutting Off Heater 1 Turncontrol knob clockwise EX 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 to the PILOT position CN THERMOSTAT CONTROL OPERATION The thermostatic control used on these models differs from standard thermo stats Standard thermostats simply turn on and off the burner The thermostat used on this heater senses the room tem perature 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 T
36. t per 1 000 Btu per hour 4 8 m3 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 This heater shall not be installed in a con fined space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air Adjoining rooms are communicating only if there are doorless passageways or ventila tion grills between them 104265 OWNER S MANUAL AIR FOR COMBUSTION AND VENTILATION Continued DETERMINING FRESH AIR FLOW FOR HEATER 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 heater 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 18 ft length x 16 ft width x 8 ft ceiling height 2304 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 Divide the space volume by 50 cubic feet to determine the maximum Btu Hr the space can support volume o
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