Desa B350D User's Manual
Contents
1. 2 Use an adjustable wrench as a backup on 90 fittings 3 Use 7 16 wrench and tighten fuel lines at solenoid valve see Figure 13 pump and pump fuel filter as sembly see Figure 14 Burner Head Solenoid Valve Figure 13 Fuel Line at Solenoid Valve Pump Fuel Filter Assembly Figure 14 Fuel Lines at Pump and Pump Fuel Filter Assembly FUEL FILTERS A Tank Fuel Filter 1 Disconnect fuel lines from pump and pump fuel filter assembly with 7 16 wrench see Figure 15 2 Carefully pry fuel filter loose from fuel tank with flat end of screwdriver 3 Inspect fuel filter for water or dirt Rinse fuel filter and fuel lines with clean kerosene 5 Replace fuel filter into fuel tank Connect fuel lines to pump and pump fuel filter assembly Pump Fuel Filter Assembly a a Fuel Filter Figure 15 Removing Tank Fuel Filter Rh Pump Fuel Filter Unscrew canister bottom from canis ter top with adjustable pliers Remove fuel filter and gasket from can ister bottom see Figure 16 Inspect canister bottom and fuel filter for water droplets or dirt Rinse canister bottom in clean kerosene Wipe inside of canister bottom dry with clean cloth Rinse fuel filter in clean kerosene Put clean fuel filter and gasket back in canister bottom Screw canister bottom into canister top Tighten securely Canister Bottom Figure 16 Fuel Pump2. HIGH PRESSURE PORTABLE FORCED AIR HEATERS OWNER S MANUAL Heater Sizes 350 000 and 600 000 Btu Hr Models B350D and B600D IMPORTANT Read and understand this manual before assembling start ing or servicing heater Improper use of heater can cause serious injury Keep this manual for future reference D HIGH PRESSURE PORTABLE FORCED AIR HEATER 350 000 AND 600 000 BTU HR 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 electrical shock and carbon monoxide poisoning AX DANGER Carbon monoxide poisoning may lead to death Carbon Monoxide Poisoning Early signs of carbon monoxide poisoning re semble the flu with headaches dizziness and or nausea 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 preg nant women persons with heart or lung disease or anemia those under the influence of alcohol and those at high altitudes 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 Use only kerosene or No 1 fuel oil to
3. D Low voltage Flame out control not reset Damaged flame out control Damaged power relay Damaged thermostat Binding pump www desatech com 1 Qo 0D tA A Check condition of power cord or ex tension cord Repair or replace damaged B Use extension cord with proper wire size see To Start Heater page 5 C Make sure heater is plugged into 120 volt 60 hertz outlet Check connections Tighten if loose A See Fan Blades and Air Deflectors page 10 B Remove debris from fan and fan guard area C Turn fan by hand If fan is hard to turn see Pump page 11 D See steps B and C under item 1 above Note Be sure to reset motor overload protector by pressing reset button on top of motor Press and release flame out control re set button See Figure 4 page 5 for but ton location Replace flame out control Replace power relay Replace thermostat Turn fan by hand If fan is hard to turn see Pump page 11 Continued HIGH PRESSURE PORTABLE FORCED AIR HEATER 350 000 AND 600 000 BTU HR TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Heater will not ignite but motor runs for a short period of time 1 On pa MO A Fuel tank empty B Water in fuel C Wrong fuel Dirt in nozzle Very low temperature may cause fuel to thicken and not flow Dirty fuel filters Wrong pump pressure Spark plug wire disconnected from plug Spark
4. to fuel pump port marked GAGE see Figure 10 Pressure Gage Fuel Pump Port Marked PRESS Marked GAGE ADJ Fuel Pump Port Model Pump Pressure 350 000 Btu Hr 100 PSI 600 000 Btu Hr 110 PSI Figure 10 Adjusting Pump Pressure 099507 OWNER S MANUAL Spark Plug Spark Solenoid Plug Wire Start heater see Operation page 5 Allow motor to reach full speed Adjust pressure Use small flat blade screwdriver to turn slotted screw at fuel pump port marked PRESS ADJ Turn screw clockwise to increase pressure Turn screw counterclockwise to de crease pressure See specifications at right for correct pressure for each model Stop heater see page 5 Remove pressure gage Replace pres sure gage plug in fuel pump port marked GAGE PUMP Procedure if Pump is Binding 1 Remove upper shell see page 10 2 Loosen hex screw on flange clamp at rear of motor with 5 16 nut driver see Figure 11 3 Turn fan with hand see Figure 12 If fan turns freely tighten screw on flange clamp 5 If fan does not turn freely replace pump 6 Replace upper shell Hex Screw On Flange Figure 11 Location of Screw on Flange Clamp Figure 12 Turning Fan with Hand Continued HIGH PRESSURE PORTABLE FORCED AIR HEATER 350 000 AND 600 000 BTU HR SERVICE PROCEDURES Continued FUEL LINES Procedure for Tightening Fuel Lines 1 Remove upper shell see page 10
5. 101552 01 57413 M17499 2 098102 01 098103 01 M50114 02 M50297 M50113 02 098560 01 NPF 5C HA3003 097491 01 101547 01 M10908 2 101504 01 M10908 14 099125 05 099125 04 099157 01 DESCRIPTION Screw 6 32 x 3 8 350 000 Btu Hr Only Photocell bracket 350 000 Btu Hr Only Spark plug Nozzle 350 000 Btu Hr Nozzle 600 000 Btu Hr Plug Burner head body Straight nipple Solenoid valve Compression elbow DESCRIPTION Wiring cover Screw 5 16 24 x 5 16 External lockwasher 5 16 Screw 4410 16 x 3 8 Motor 350 000 Btu Hr Motor 600 000 Btu Hr Flange clamp holds pump to motor Motor support 850 000 Btu Hr Motor support 600 000 Btu Hr Street elbow Pipe nipple Fuel filter assembly Filter element inside fuel filter assembly includes rubber gaskets 90 Male elbow Compression elbow Straight fitting Fuel pump Lockwasher 5 16 Hex nut 5 16 24 Flame out control Power relay Snap bushing Screw 6 32 x 3 8 Strain relief bushing Screw 8 32 x 3 8 Terminal board Terminal board Rivet Standard hardware item Da a 22D Ahh Figure 18 Burner Head Assembly 2 Figure 19 Motor And Pump Assembly 18 099507 OWNER S MANUAL NOTES 099507 19 WARRANTY AND REPAIR SERVICE LIMITED WARRANTY DESA International warrants this product and any parts thereof to be free from defects in materials and workman ship for one 1 year from the date of fi
6. M50296 104413 01 M10908 2 M11084 29 NPC 1C A DESCRIPTION Upper shell model B600D Yellow Screw 4110 16 x 1 2 Combustion chamber amp shield Bushing Air deflector Burner head assembly Photocell assembly Fan Fan guard Fan switch Fan switch cover Sleeve Screw 4110 16 x 3 8 Motor amp pump assembly Hex nut 1 4 20 Clip nut Screw 4112 14 x 1 2 Bushing Lower shell model B600D Yellow Fuel line Power cord Support bracket model B600D Yellow Screw 1 4 20 x 3 8 Front handle Screw 1 4 20 x 1 1 2 Fuel cap Filler neck screen Wire harness Rear handle Fuel line assembly Ignition boot Electronic Ignitor Fuel tank Screw 1 4 20 x 2 3 4 Wheel support frame Axle Drain plug Screw 6 32 x 3 8 Thermostat Thermostat bracket Black Wheel Cotter pin 5 32 x 1 1 4 Flatwasher 5 8 Wheel spacer Photocell Bracket Screw 6 32 x 3 8 Screw 4110 16 x 3 4 Internal lockwasher No 6 Nut 6 32 NNNN DNANDDNDN p a 0dacccccogcopmbpnyny npnaA00 099090 T Not available as complete assembly See page 18 A Not shown Standard hardware item 099507 17 HIGH PRESSURE PORTABLE FORCED AIR HEATER 350 000 AND 600 000 BTU HR Burner Head Assembly 350 000 and 600 000 Btu Hr PART NO M10908 2 099229 01 HA3012 M50112 M30765 M51170 01 M50924 02 69246 M50077 M50297 PART NO 097495 02AA HF5 5C WLE 5 M11084 26 099562 01 099562 02 M50116 099520 01AA
7. avoid risk of fire or explosion Never use gasoline naphtha paint thinners alcohol or other highly flammable fuels Fueling a Personnel involved with fueling shall be qualified and thoroughly familiar with the manufacturer s instructions and applicable federal state and lo cal regulations regarding the safe fueling of heating units b Only the type of fuel specified on the heater s data plate shall be used c All flame including the pilot light if any shall be extinguished and the heater allowed to cool prior to fueling d During fueling all fuel lines and fuel line connections shall be inspected for leaks Any leaks shall be repaired prior to returning the heater to service e At no time shall more than one day s supply of heater fuel be stored in side a building in the vicinity of the heater Bulk fuel storage shall be outside the structure f All fuel storage shall be located a minimum of 25 feet from heaters torches welding equipment and similar sources of ignition excep tion the fuel reservoir integral with the heater unit g Whenever possible fuel storage shall be confined to areas where floor penetrations do not permit fuel to drip onto or be ignited by a fire at lower elevation h Fuel storage shall be in accordance with the federal state or local au thority having jurisdiction Never use heater where gasoline paint thinner or other highly flammable va pors are present Follow
8. it to your nearest authorized service center Proof of purchase must be presented with the heater The heater will be inspected A defect may be caused by faulty materials or workmanship If so DESA Interna tional will repair or replace the heater without charge If they cannot supply original replacement part s either contact your nearest Parts Central or call DESA International s Technical Service Department at 1 800 323 5190 When calling DESA International have ready your name your address model number of your heater how heater was malfunctioning proof of purchase Usually we will ask you to return the defective partto the factory PARTS AND REPAIR SERVICE Return your heater to your nearest authorized service center Repairs not covered by the warranty will be billed at standard prices If they cannot supply original replacement part s either contact your nearest Parts Central or call DESA International s Parts Department at 1 800 972 7879 for information When calling DESA International have ready model number of your heater the replacement part number A service manual may be purchased from the address listed below Send a check for 5 00 payable to DESA International When writing for information regarding your heater be sure to include the model number and serial number as shown on the model plate Each service center is independently owned and operated We reserve the right to amend these specifications
9. 7879 for information Parts Centrals are listed in the Authorized Service Center booklet supplied with heater You can also write to the address listed on the back page of this manual FUEL PRESSURE GAGE M4574 Special tool to check fuel pump pressure TECHNICAL SERVICE You may have further questions about in stallation operation or troubleshooting If so contact DESA International s Techni cal Service Department at 1 800 323 5190 You can also visit DESA International s Technical Services web site at www desatech com HIGH PRESSURE PORTABLE FORCED AIR HEATER 350 000 AND 600 000 BTU HR ILLUSTRATED PARTS BREAKDOWN 350 000 BTU HR 14 099507 OWNER S MANUAL This list contains replaceable parts used in your heater When ordering parts follow the instructions listed under Repair Service on the back page of this manual PARTS LIST 350 000 BTU HR 099507 PART NO 099329 02 M11084 27 M50542 01 M30865 02 M50086 T M16656 18 M50121 M50097 01AA M51336 02 M51160 01 M50278 M11084 26 T 099896 01 M50295 M50050 102482 04 099329 01 M11271 8 M11084 3 M50104 02 099509 01 M50115 01 M50062 03 097702 01 HA2210 HC4 18C M51043 01 M50062 098513 05 M50063 M18774 NTC 4C M50389 C5 10C WP 10C M50296 M27417 099895 01 M11084 29 DESCRIPTION Upper shell model B350D Yellow Screw 4110 16 x 1 2 Combustion chamber amp shield Bushing Air deflector Burner head assem
10. Filter and Canister 099507 SPECIFICATIONS 350 000 Btu Hr OWNER S MANUAL 600 000 Btu Hr Output Rating Btu Hr 350 000 600 000 Fuel Use Only Kerosene or No 1 Fuel Oil Fuel Tank Capacity U S Gallons 30 36 Fuel Consumption Gallons Per Hr 2 5 4 Electric Requirements 120V 60 Hz 120V 60 Hz Amperage Normal Run 7 1 11 Motor RPM 1725 1725 Fuel Pump Pressure PSI 100 110 Spark Plug Gap 075 075 Weight approx lbs Dry 180 285 With Full Fuel Tank 390 550 BLACK BLACK THERMOSTAT 7 45 FLAME OUT RESET a WHITE CONTROL pp Be oo0000 A L N BLUE RELAY M RED ORANGE D WHITE MOTOR WHITE RED BLACK YELLOW RED TERMINAL TERMINAL BOARD BOARD i pa ER al WHITE ware 1 RAE E ll YELLOW ag SPARK RED WHITE E REUG YELLOW W I SOLENOID VALVE ELECTRONIC IGNITOR amp WHITE BLUE Vy ORANGE PHOTOCELL 120V 60Hz Figure 17 Wiring Diagram 099507 MAINTENANCE KITS Kit Part Number Flame Out Control HA3003 Spark Plug HA3012 ACCESSORY Purchase this heater accessory from your nearest dealer or service center If they can not supply this accessory either contact your nearest Parts Central or DESA International s Parts Department at 1 800 972
11. all local ordinances and codes when using heater Heaters used in the vicinity of tarpau lins canvas or similar enclosure ma terials shall be located a safe distance from such materials The recommended minimum safe distance is 10 feet It is further recommended that these enclo sure materials be of a fire retardant na ture These enclosure materials shall be securely fastened to prevent them from igniting or from upsetting the heater due to wind action Use only in well vented areas Before using heater provide at least a three square foot opening of fresh outside air for each 100 000 Btu Hr of rating This heater produces carbon monox ide which is listed by the State of Cali fornia as a reproductive toxin under Proposition 65 Use only in places free of flammable vapors or high dust content Use only with the electrical voltage and frequency specified on model plate Use only a three prong grounded ex tension cord Minimum heater clearances from combustibles Outlet 8 Ft Sides 4 Ft Top 4Ft Rear 4 Ft Locate heater on a stable and level surface while hot or running or a fire may occur When moving or storing heater keep heater in a level position or fuel spill age may occur Keep children and animals away from heater Unplug heater when not in use This heater has a built in thermostat Plugged in heater may start at anytime Never use heater in living or sleeping areas Never block air i
12. at any time without notice KEEP THIS WARRANTY Model No Serial No Date of Purchase To be filled in by purchaser DESA INTERNATIONAL Corporate Headquarters 2701 Industrial Drive P O Box 90004 Bowling Green Kentucky 42102 9004 www desatech com For information write DESA International P O Box 90004 Bowling Green Kentucky 42102 9004 ATTN Customer Service Department When writing always include Model number and Serial number 099507 01 NOT A UPC 099507 01 Rev L 06 99
13. ber This air is heated and provides a stream of clean hot air The Ignition System The electronic ig nitor sends voltage to the spark plug The spark plug ignites the fuel and air mixture The Flame Out Control System This system causes the heater to shut down if the flame goes out It also allows the fan to continue running after normal shutdown of heater This cools the combustion chamber FUELS VENTILATION WARNING Useonly kerosene or No 1 fuel oil to avoid risk of fire or explosion Never use gaso line naphtha paint thinners al cohol or other highly flammable fuels Do not use heavy fuels such as No 2 fuel oil or No 2 diesel Using heavy fuels will result in clogged fuel filter and nozzle carbon build up on spark plug the need of non toxic anti icer in fuel during very cold weather IMPORTANT Use a KEROSENE ONLY storage container Be sure storage container is clean Foreign matter such as rust dirt or water will cause flame out control to shut down heater Foreign matter may also re AX WARNING Follow the mini mum fresh outside air ventila tion requirements If proper fresh outside air ventilation is not pro vided carbon monoxide poison ing can occur Provide pr
14. bly Photocell assembly Fan Fan guard Fan switch Fan switch cover Sleeve Screw 4110 16 x 3 8 Motor amp pump assembly Power cord Fuel line Ignition boot Electronic Ignitor Lower shell model B350D Yellow Clip nut Screw 4112 14 x 1 2 Bushing Wire harness Fuel line assembly Front handle Fuel cap Filler neck screen Screw 1 4 20 x 2 1 4 Screw 1 4 20 x 1 1 2 Rear handle Fuel tank Wheel support frame Axle Hex lock nut 1 4 20 Wheel Cotter pin 5 32 x 1 1 4 Flatwasher 5 8 Wheel spacer Drain plug Thermostat Screw 4110 16 x 3 4 TNot available as complete assembly See page 18 BrtrtststastoNnago P P ANNO 2 HABA NOt AA Ap HIGH PRESSURE PORTABLE FORCED AIR HEATER 350 000 AND 600 000 BTU HR ILLUSTRATED PARTS BREAKDOWN 600 000 BTU HR 16 099507 PARTS LIST 600 000 BTU HR This list contains replaceable parts used in your heater When ordering parts follow the instructions listed under Repair Service on the back page of this manual OWNER S MANUAL PART NO 099329 04 M11084 27 M50543 01 M30865 02 M50157 T 104679 01 M50194 M50186 01AA M51336 02 M51160 01 M50278 M11084 26 T NTC 4C M11271 8 M11084 3 M50104 02 099329 03 M50119 01 099896 01 M50388AB HC4 3C M50224 M51043 01 097702 01 HA2210 099509 02 M28872 01 M50115 02 M50050 102482 04 098513 07 HC4 22C M28140 02 M18774 M27417 RC1 3C 099895 01 M25121B M50389 C5 10C WP 10C
15. burner head into vise and Fan Blade lightly tighten 7 Carefully remove nozzle from burner Figure 6 Fan Blades and Air Deflectors head using 5 8 socket wrench see Fig ure 9 page 11 8 Inspect nozzle for damage If damaged SPARK PLUG or clogged replace nozzle Remove upper shell see column 1 9 Make sure plug isin place on burner head 2 Remove spark plug wire from spark 10 Replace nozzle into burner head and plug see Figure 7 tighten firmly 175 200 inch pounds 3 Remove spark plug from burner head 11 Attach burner head to combustion using 13 16 open end wrench see chamber Figure 7 12 Install spark plug in burner head 4 Replace spark plug if damaged or 3 Attach spark plug wire to spark plug heavily coated with carbon 14 Attach fuel line to solenoid valve 5 Clean and regap spark plug electrodes Tighten firmly to 075 inch see Figure 8 Install spark plug in burner head 15 Replace upper shell 7 Attach spark plug wire to spark plug 8 Replace upper shell Burner Head Spark Plug Wire Figure 7 Spark Plug Removal gt Y 075 inch Figure 8 Spark Plug Gap 10 099507 SERVICE PROCEDURES Continued Burner Head Figure 9 Replacing Nozzle Pump Pressure Adjustment 1 Remove pressure gage plug from fuel pump port marked GAGE 2 Install accessory pressure gage part number M4574
16. ill prevent excess debris from clogging filters dur ing future use 6 Replace fuel cap or drain plug Prop erly dispose of old and dirty fuel Check with local automotive service stations that recycle oil 7 Add two gallons 350 000 Btu Hr or three gallons 600 000 Btu Hr of clean kerosene or No 1 fuel oil to fuel tank 8 Replace fuel cap Operate heater for 5 minutes see Operation 10 Stop heater and let cool completely 11 Remove drain plug and drain fuel tank 12 Replace drain plug 13 Properly dispose of old and dirty fuel 14 If storing store heater in a dry loca tion Make sure storage place is free of dust and corrosive fumes IMPORTANT Do not store kerosene over summer months for use during next heating season Using old fuel could damage heater HIGH PRESSURE PORTABLE FORCED AIR HEATER 350 000 AND 600 000 BTU HR PREVENTATIVE MAINTENANCE SCHEDULE Item AX WARNING Never service heater while it is plugged in op erating or hot Severe burns and electrical shock can occur How Often How To Fuel tank Filler neck screen Fuel filter assembly Fuel tank Fuel filter lines Fuel filter Pump Spark plug Fan blades and air deflectors Air passages around burner head Motor Flush every 150 200 hours of operation or as needed Check for particles in fuel when filling fuel tank Clean when dirty Clean twice a heating season or replace as needed Check a
17. just pump pressure see Pump Pres off heater after a short period of time 2 Dirty fuel filters 3 Dirt in nozzle 4 Dirty photocell lens 5 Open or damaged photocell 6 Bad flame out control 7 Damaged fan switch Wrong pump pressure UJ ON Un sure Adjustment page 11 Clean fuel filters see Fuel Filters page 12 Replace nozzle see Nozzle page 10 Clean photocell lens with clean cotton swab Replace photocell Replace flame out control Replace fan switch Adjust pump pressure see Pump Pres sure Adjustment page 11 Heater burns but puffs of smokecanbeseen 2 A Heater almost out of fuel Heater does not burn steady B Water condensation in fuel tank Heater burns with odor C Wrong fuel Heater smokes continuously 3 Dirty fuel filters 4 Airleak in suction system 5 Dirty nozzle 6 Low voltage causing motor to operate below rated speed 7 Loose fuel line www desatech com 099507 9 A Add fuel to tank B Check fuel tank for bubbles of water in bottom If found remove fuel see Storing Transporting or Shipping page 5 Clean tank and fuel filters see Fuel Filters page 12 Fill with clean fuel C Remove wrong fuel see Storing Transporting or Shipping page 5 Clean tank and fuel filters see Fuel Filters page 12 Fill with correct fuel Clean fuel filters see Fuel Filters page 12 Tighten all fuel line connections see Fuel Line
18. le cools the combustion chamber Damage to heater can occur if combustion chamber is not cooled Do not restart heater until purge cycleis complete 1 Turn thermostat dial to lowest tempera ture setting This will cause heater flame to go out The motor will con tinue to run during the purge cycle This allows the fan to cool the combustion chamber When the purge cycle is finished the motor will stop Do not unplug heater until purge cycle is fin ished Unplug extension cord from outlet 3 To temporarily stop heater set thermo stat at a temperature lower than air around heater Heater will cycle back on if air temperature around heater matches thermostat setting TO RESTART HEATER A CAUTION Do not restart heater until purge cycle is finished The purge cycle cools the combustion chamber 1 Wait until purge cycle is finished after stopping heater 2 Repeat steps under To Start Heater STORING TRANSPORTING OR SHIPPING Note If shipping transport companies re quire fuel tanks to be empty 1 Drain all fuel from fuel filters fuel lines and pump see Fuel Filters Tank Fuel Filter page 12 2 Clean and flush fuel filter and canister attached to fuel pump see Fuel Filters Pump Fuel Filter page 12 Remove drain plug and drain fuel tank Replace drain plug 5 Ifany debris is noted in old fuel add 1 or 2 quarts of clean kerosene to tank stir and drain again This w
19. nd tighten loose connections occa sionally Clean fuel filter element every 250 hours Clean and regap every 300 hours of opera tion or replace as needed Clean each season or as needed Check each season for dirt and debris Not required permanently lubricated See Storing Transporting or Shipping page 5 Lift out of fuel tank and rinse with clean kerosene See Fuel Filters page 12 See Fuel Lines Page 12 See Fuel Filters page 12 See Spark Plug page 10 See Fan Blades and Air Deflectors page 10 Remove debris and trash with a clean soft cloth 099507 TROUBLESHOOTING Note For additional help visit DESA International s Technical Service web site at www desatech com OBSERVED PROBLEM OWNER S MANUAL A WARNING Never service heater while it is plugged in operating or hot Severe burns and electrical shock can occur Only a qualified service person should service and repair heater POSSIBLE CAUSE REMEDY Motor does not start when heater is plugged in and thermostat setting is higher than surrounding air temperature 099507 1 W OADM No power or low voltage at heater due to A Damaged power cord or extension cord B Wrong size extension cord C Heater plugged into outlet with volt age lower than 120 volt Loose electrical connections Motor overload protector tripped due to A Dirty fan B Debris pulled into fan area by fan C Binding pump
20. nlet rear or air outlet front of heater Never move handle refuel or service a hot operating or plugged in heater Never attach duct work to front or rear of heater Warning to New York City Residents For Use Only At Construction Sites in accordance with applicable NYC codes under NYC Board of Standards and Appeals calender number 62 59 SA 099507 OWNER S MANUAL UNPACKING PRODUCT IDENTIFICATION Hot Air Outlet Upper Shell Motor and Pump Assembly Lower Shell Fuel Cap Thermostat Power Cord Fuel Tank Flame Out Control Reset Button Figure 1 350 000 Btu Hr Model Hot Air Outlet Upper Shell Se Motor and Pump Assembly m Shell Power Cord Flame Out Control Fuel Tank Reset Button Figure 2 600 000 Btu Hr Model 099507 3 1 Remove all protective packing applied to heater for shipment Remove heater from shipping container Check heater for any shipping damage If heater is damaged promptly inform dealer where you bought heater HIGH PRESSURE PORTABLE FORCED AIR HEATER 350 000 AND 600 000 BTU HR THEORY OF OPERATION The Fuel System The motor turns the fuel pump The fuel pump pulls fuel from the fuel tank The fuel pump pushes fuel through a filter and a solenoid valve and out the burner head nozzle A fine mist of fuel is sprayed into the combustion chamber The Air System The motor turns the fan The fan pushes air into and around the combustion cham
21. oper fresh outside air ventilation be fore running heater Fresh Air Opening Requirements Square Feet Heater Size Opening 350 000 Btu Hr 10 5 600 000 Btu Hr 18 0 Note If you use more than one heater provide extra fresh air Provide a fresh air opening of at least three square feet for each quire you to clean fuel system often 100 000 Btu Hr rating Solenoid Fuel Pump Combustion Valve Fuel Filter Chamber Spark d Fan Motor Plug ea E T RE Clean lt imm Heated 2 Air Out Cool U Air In gue is Fuel Pickup Line 1 Fuel Tank Nozzle Beha Va Electronic Ignitor Fuel Air for Combustion and Heating Figure 3 Cross Section Operational View Filter de Fuel 099507 OPERATION AX WARNING Review and un derstand the warnings in the Safety Information Section They are needed to safely operate this heater TO START HEATER 1 Follow all ventilation and safety infor mation 2 Fill fuel tank with kerosene or No 1 fuel oil 3 Attach fuel cap 4 Setthermostat dial to desired tempera ture Note Thermostat setting must be higher than surrounding air temperature 5 Plug power cord of heater into three prong grounded extension cord Exten sion cord must be at least six feet long A WARNING Use only a three prong grounded extension cord Use cord with proper wire size to assure 120 volt operation See Extension Cord Wire Size Re quiremen
22. plug problems due to A Wrong gap B Plug wet with fuel C Carbon deposits on plug D Damaged plug Solenoid valve not opening 1 A Add fuel to tank B Check fuel tank for bubbles of water in bottom If found remove fuel see Storing Transporting or Shipping page 5 Clean tank and fuel filters see Fuel Filters page 12 Fill with clean fuel C Remove wrong fuel see Storing Transporting or Shipping page 5 Clean tank and fuel filters see Fuel Filters page 12 Fill with correct fuel Replace nozzle see Nozzle page 10 Move heater to warmer place until fuel flows freely Clean fuel filters see Fuel Filters page 12 Adjust pump pressure see Pump Pres sure Adjustment page 11 Connect spark plug wire to spark plug A Adjust electrode gap to 075 see Spark Plug page 10 B Clean fuel from spark plug with clean soft cloth C Replace plug if heavily coated with carbon see Spark Plug page 10 D Inspect plug for worn or eroded elec trodes If found replace plug see Spark Plug page 10 Check electrical connections and volt age to solenoid If good replace sole noid valve A WARNING High Voltage Damaged electronic ignitor www desatech com 9 Replace electronic ignitor 099507 OWNER S MANUAL TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Heater ignites but flame out control shuts 1 Wrong pump pressure 1 Ad
23. rst purchase when operated and maintained in accordance with instructions This warranty is extended only to the original retail pur chaser when proof of purchase is provided This warranty covers only the cost of parts and labor re quired to restore the product to proper operating condition Transportation and incidental costs associated with war ranty repairs are not reimbursable under this warranty Warranty service is available only through authorized deal ers and service centers This warranty does not cover defects resulting from misuse abuse negligence accidents lack of proper maintenance normal wear alteration modification tampering contami nated fuels repair using improper parts or repair by anyone other than an authorized dealer or service center Routine maintenance is the responsibility of the owner THIS EXPRESS WARRANTY IS GIVEN IN LIEU OF ANY OTHER WARRANTY EITHER EXPRESSED OR IMPLIED INCLUDING WARRANTIES OF MER CHANTABILITY ANDFITNESS FOR APARTICULAR PURPOSE DESA International assumes no responsibility for indirect incidental or consequential damages Some states do not allow the exclusion or limitation of incidental or consequen tial damages or limitations or exclusions may not apply to you This Limited Warranty gives you specific legal rights and you may also have other rights which vary from state to state PARTS AND SERVICE UNDER WARRANTY Should your heater require service return
24. s page 12 Replace nozzle see Nozzle page 10 Check voltage at heater Voltage at heater should be not less than 9096 of rated volt age 108V minimum for 120V heaters Check and tighten all fuel line connec tions see Fuel Lines page 12 HIGH PRESSURE PORTABLE FORCED AIR HEATER 350 000 AND 600 000 BTU HR SERVICE PROCEDURES AX WARNING Never service heater while it is plugged in op erating or hot Severe burns and electrical shock can occur Only aqualified service person should service and repair heater UPPER SHELL REMOVAL 1 Remove screws along each side and top of heater using 5 16 nut driver These screws attach upper and lower shells together see Figure 5 2 Lift upper shell off 9 SB N ES ed Upper Shell Figure 5 Upper Shell Removal 600 000 Btu Hr Model FAN BLADES AND AIR DEfIECTORS 1 Remove upper shell see column 1 2 Clean fan blades and air deflectors with clean soft cloth moistened with kero sene or solvent see Figure 6 3 Dry fan blades and air deflectors thor oughly 4 Replace upper shell NOZZLE 1 Remove upper shell see column 1 Air Deflector 2 Remove fuel line from solenoid valve using 7 16 wrench 3 Remove spark plug wire from spark plug Remove spark plug from burner head using 13 16 open end wrench 5 Remove five screws using 5 16 nut driver and remove burner head from combustion chamber 6 Place
25. ts below Extension Cord Wire Size Requirements 6 to 100 feet long use 14 AWG rated cord 101 to 200 feet long use 12 AWG rated cord 201 to 300 feet long use 10 AWG rated cord 301 to 400 feet long use 8 AWG rated cord 401 to 500 feet long use 6 AWG rated cord Plug extension cord into standard 120 volt 60 hertz three hole grounded outlet The motor will start when extension cord is plugged into outlet The heater should ignite at once If heater does not ignite restart heater To restart heater wait 60 seconds then push in flame out control reset button Flame out con trol reset button is at rear of heater near power cord see Figure 4 099507 OWNER S MANUAL Note A cold heater may affect the termostat setting This thermostat is a general heating control It is not intended for precise tem perature control Adjust thermostat until heater cycles at the desired setting Note If starting heater for first time you may need to restart heater several times before heater ignites You may also have to do this after taking heater out of storage To facilitate starting remove the canister bot tom from the pump s fuel filter and fill with fuel Reassemble filter see Pump Fuel Filter page 12 PA Flame Out Control Reset Button Figure 4 Flame Out Control Reset Button TO STOP HEATER A CAUTION Never unplug heater while heater is running Heater must go through purge cycle The purge cyc
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