Illustrated Parts Diagram
Contents
1. 16 www desatech com 116170 01A PARTS LIST MODELS BC40 AND RC40 This list contains replaceable parts used in your heater When ordering parts be sure to provide the correct model and serial numbers from the model plate then the part number and description of the desired part KEY PART NO NUMBER DESCRIPTION M51104 01 098511 67 M11084 29 108631 01 098512 58 M10908 2 103154 03 M16656 24 see page 22 M11084 26 103684 01 see page 22 M51105 01 098219 38 M11143 1 NTC 4C M11084 26 M50631 097461 09 101205 01 M30865 02 M11271 8 M50104 02 M11084 26 M10908 14 098511 234 M50814 06 079973 01 M50876 04 M10990 3 079532 01 102349 01 104068 02 097702 01 108088 01 M51108 01 M15823 27 103814 01 105550 01 105550 02 Handle Upper Shell Service Part Will Be Black Screw 10 16 x 3 4 Screw 10 16 x 1 Combustion Chamber Screw 6 32 x 3 8 Photocell Bracket Photocell Assembly Burner Head Assembly Screw 10 16 x 3 8 Fan Motor Fan Guard Power Cord Strain Relief Bushing Hex Lock Nut 1 4 20 Screw 10 16 x 3 8 Rubber Bumper Side Cover Motor Bracket Bushing Clip Nut Bushing Screw 10 16 x 3 8 Screw 8 32 x 3 8 Lower Shell Service Part will be Black Rubber Airline Fuel Line Fuel Filter with bushing Rubber Bushing Guard Nose Cone PCB Support Ignition Control Assembly Fuel Cap Includes Gasket Fuel Tank Shell Heat Shield Screw 10 16 x 1 22. Handle Frame Extended F Axle Gub Cap Nut Wheel Spacer If Provided Wheel Figure 7 Wheel and Handle Assembly 115 165 Models Only 116170 01A www desatech com 5 OPERATION IMPORTANT Review and under stand the warnings in the Safety Information section page 2 They are needed to safely oper ate this heater Follow all local ordinances and codes when using this heater TO START HEATER IA Follow all ventilation and safety information TO STOP HEATER Without ON OFF Switch Unplug extension cord from outlet With ON OFF Switch Push ON OFF switch to OFF O position Unplug heater when not in use TO RESTART HEATER Without ON OFF Switch 1 Unplug extension cord from outlet and wait 10 seconds Wait two minutes if heater has been running 2 Locate heater to provide maximum circulation 2 Repeat steps under To Start Heater of the heated air Follow all location require With ON OFF Switch ments noted in Safety Information page 2 1 Push ON OFF switch to OFF O position and 3 Fill fuel tank with kerosene 1 2 diesel fuel wait 10 seconds 2 minutes if heater has been oil JET A or JP 8 fuel running 4 Attach fuel cap 2 Repeat steps under To Start Heater 5 For thermostat models turn thermostat knob clockwise to the high position 6 Plug heater s power cord into approved ON OFF grounded three wire extension cord Extension Switch with cord must be a
3. M50814 06 Rubber Airline 079973 01 Fuel Line M50876 05 Fuel Filter with bushing M10990 3 Rubber Bushing 102349 01 PCB Support 104068 02 Ignition Control Assembly 113280 01 Fuel Cap w Gauge includes Gasket Use with Fuel Tank 113279 01 113279 01 Fuel Tank Plastic Filler Neck M51108 01 Shell Heat Shield 104458 01 Thermostat M12461 18 Screw 8 32 x 7 8 104460 01 Thermostat Knob WLE 2 Lock Washer EXT 8 113461 01 ON OFF Switch M15823 27 Screw 10 16 x 1 2 079532 01 Nose Cone Guard PARTS AVAILABLE NOT SHOWN 103814 01 Wire Tie For Ignition Control Assembly M9900 170 Wire Assembly Thermostat to Ignition Control Assembly 079010 46 Wire Assembly Connects Switch to Thermostat or Ignition Control 1 1 2 2 1 1 2 1 1 1 2 1 1 1 1 1 1 2 8 2 2 1 1 6 1 6 1 1 1 1 1 1 5 1 EE E EN 116170 01A www desatech com 19 ILLUSTRATED PARTS BREAKDOWN MODELS BC115DT RC115DT UKC115DT BC165DT RC165DT AND UKC165DT 24 20 www desatech com 116170 01A PARTS LIST MODELS BC115DT RC115DT UKC115DT BC165DT RC165DT AND UKC165DT This list contains replaceable parts used in your heater When ordering parts be sure to provide the correct model and serial numbers from the model plate then the part number and description of the desired part KEY PART Ne NUMBER DESCRIPTION 098511 292 M15823 27 098512 71 098512 75 103154 05 M16660 02 M10908 2 M16656 24 See page 22 M110
4. PARTS AVAILABLE NOT SHOWN Wire Tie Warning Maintenance Decal Warning Maintenance Decal asi oe ee ee ee Ow Se ANY a aaa ee ee eS oO Nw oS AX 116170 01A www desatech com ILLUSTRATED PARTS BREAKDOWN MODELS BC55CT RC55CT UKC55CT BC70ET RC70ET AND UKC70ET 116170 01A www desatech com 18 PARTS LIST MODELS BC55CT RC55CT UKC55CT BC70ET RC70ET AND UKC70ET This list contains replaceable parts used in your heater When ordering parts be sure to provide the correct model and serial numbers from the model plate then the part number and description of the desired part KEY PART NO NUMBER DESCRIPTION QTY M51104 01 Handle 098511 67 Upper Shell Service Part Will Be Black M11084 29 Screw 10 16 x 3 4 108631 01 Screw 10 16 x 1 098512 50 Combustion Chamber 55 098512 51 Combustion Chamber 70 M10908 2 Screw 6 32 x 3 8 103154 03 Photocell Bracket M16656 24 Photocell Assembly see page 22 Burner Head Assembly M11084 26 Screw 10 16 x 3 8 103684 01 Fan 55 M29678 Fan 70 see page 22 Motor and Pump Assembly M51105 01 Fan Guard 113065 01 Power Cord M11143 1 Strain Relief Bushing NTC 4C Hex Lock Nut 1 4 20 M11084 26 Screw 10 16 x 3 8 M50631 Rubber Bumper 097461 16 Side Cover 101205 01 Motor Bracket M50104 06 Bushing M11271 8 Clip Nut M50104 02 Bushing M11084 26 Screw 10 16 x 3 8 M10908 14 Screw 8 32 x 3 8 098511 234 Lower Shell Service Part Will Be Black
5. Cap Nuts Pneumatic Wheel Kit 165 Contains 2 Black Wheels Cap Nuts amp Spacers Cap Nut Axle Wheel Spacer 165 only Cord Cleat Kit if provided Contains 2 Cleats 4 Nuts and 4 Bolts 24 www desatech com 116170 01A WIRING DIAGRAMS Photocell Photocell Ignitor Power Plug Motor Return 120V 60Hz AC Neutral L2 120V L1 Ignition Control Assembly Ignitor Photocell Photocell Ignitor Motor Return i Green MBlack Power Plug 120V 60Hz AC Neutral L2 Ign ton Contro Assemb y ON OFF Switch with Light 55 70 115 155 165 Models Figure 33 Wiring Diagrams 116170 01A www desatech com 25 ACCESSORIES Heater accessories and parts are available at your local dealer Should your dealer not stock or is un able to order a particular accessory or part please contact DESA Industries for more information DESA Industries of Canada Inc 2220 Argentia Road Unit 4 Mississauga Ontario L5N 2K7 Parts Department 1 905 826 8010 THERMOSTAT KIT HA1210 For 40 model Keeps your building at the tempera ture you select day and night Helps economize on fuel AIR GAUGE KIT HA1180 For all models Special tool to check pump pressure IGNITION CONTROL ASSEMBLY PHOTOCELL TESTER HA1170 Special tool used to test the ignition control as sembly and photocell HEAVY DUTY WHEELS AND HANDLE KIT HA1202 For heavy duty applications Make
6. Check for debris in pump If debris is found blow out with compressed air 8 Install insert and rotor Check gap on rotor Adjust to 076 101 mm 003 004 if needed see Figure 30 page 15 Note Rotate rotor one full turn to ensure the gap is 076 101 mm 003 004 at tightest position Adjust if needed 10 Install blades pump plate air filters and filter end cover 11 Replace fan guard and upper shell see Upper Shell Removal page 10 12 Adjust pump pressure see Pump Pressure Adjustment page 11 Air Intake Pump Filter Filter Blade Cover Air Output Filter Figure 28 Rotor Location 40 55 70 Models Blade Pump Plate Air Output Filter Filter End Cover Figure 29 Rotor Location 115 165 Models 14 www desatech com 116170 01A SERVICE PROCEDURES IGNITION CONTROL ASSEMBLY Continued a EE WARNING High voltage Note If rotor is still binding proceed as follows 1 Unplug heater 13 Perform steps 1 through 6 2 Remove side cover screws 4 using 5 16 nut 14 Place fine grade sandpaper 600 grit on flat driver to expose ignition control assembly surface Sand rotor lightly in figure 8 motion 3 Remove fuse cover see Figure 32 four times see Figure 31 4 Remove fuse from fuse clips see Figure 32 15 Reinstall insert and rotor 5 Replace fuse with fuse of the same type and 16 Perform steps 10 through 12 rating GMA 10 Do not
7. Models Only FAN IMPORTANT Remove fan from motor shaft before removing motor from heater The weight of the motor resting on the fan could damage the fan pitch see Figure 13 1 Remove upper shell see Figure 11 or 12 2 Use 1 8 allen wrench to loosen setscrew which holds fan to motor shaft 3 Slip fan off motor shaft 4 Clean fan using a soft cloth moistened with kerosene or solvent 5 Dry fan thoroughly 6 Replace fan on motor shaft Place fan hub flush with end of motor shaft see Figure 14 7 Place setscrew on flat of shaft Tighten setscrew firmly 40 50 inch pounds 4 5 5 6 n m 8 Replace fan guard and upper shell Setscrew Motor Shaft Figure 13 Fan Motor Shaft and Setscrew Location Motor setscrew Fan C i gt Flush Figure 14 Fan Cross Section AIR OUTPUT AIR INTAKE AND LINT FILTERS 1 Remove upper shell see Figure 11 or 12 fur TK 2 Remove filter end cover screws using 5 16 nut driver see Figure 15 or Figure 16 page 11 3 Remove filter end cover Replace air output and lint filters 5 Wash or replace air intake filter see Preventa tive Maintenance Schedule page 8 SS Air Intake Filter Filter End Cover Oy Lint Filter Air Output Filter Figure 15 Air Output Air Intake and Lint Filters 40 55 70 Models Only 10 www desatech com 116170 01A SERVICE PROCEDURES Continued 6 Replace filter
8. end cover 7 Replace fan guard and upper shell IMPORTANT Do not oil filters Air Intake Filter Filter End Cover Lint Filter Air Output Filter Figure 16 Air Output Air Intake and Lint Filters 115 165 Models Only PUMP PRESSURE ADJUSTMENT 1 Remove pressure gauge plug from filter end cover see Figure 17 2 Install accessory pressure gauge part number HA1180 3 Start heater see Operation page 6 Allow motor to reach full speed 4 Adjust pressure Turn relief valve to right to increase pressure Turn relief valve to left to decrease pressure See specifications correct pressure for each model see Figure 18 5 Remove pressure gauge Replace pressure gauge plug in filter end cover Pressure Gauge Plug Relief Valve Figure 17 Pressure Gauge Plug Removal 70 Model Shown Pump Model Pressure 40 3 0PSI 55 34 PSI 70 4 7 PSI 115 5 1 PSI 165 5 6 PSI Pressure Figure 18 Adjusting Pump Pressure 70 Model Shown FUEL FILTER 1 Remove side cover screws using 5 16 nut driver 2 Remove side cover 3 Pull upper fuel line off fuel filter neck see Figure 19 or 20 4 Carefully pry bushing fuel filter and lower fuel line 115 165 Models only out of fuel tank see Figure 20 5 Wash fuel filter with clean fuel and replace in tank 6 Attach upper fuel line to fuel filter neck 7 Replace side cover Fuel Filter and Bushing Upper Fuel Line e Sid
9. knob to a higher setting A WARNING High voltage 4 Bad electrical connection be tween motor and ignition con trol assembly or ignition control assembly and power cord 5 Binding pump rotor 6 Defective ignition control as sembly 7 Defective motor 8 Blown fuse or ignitor control assembly 4 Check all electrical connec tions See Wiring Diagrams page 25 5 If fan does not turn freely see Pump Rotor page 14 6 Replace ignition control as sembly 7 Replace motor 8 See Ignition Control Assembly page 15 8 www desatech com 116170 01A TROUBLESHOOTING Continued FAULT CONDITION POSSIBLE CAUSE REMEDY Motor starts and runs but heater 1 No fuel in tank 1 Fill tank with kerosene does not ignite N Un uy Pump pressure incorrect Dirty fuel filter Obstruction in nozzle Water in fuel tank 2 Bw See Pump Pressure Adjust ment page 11 See Fuel Filter page 11 See Nozzle Assembly page 13 Drain and flush fuel tank with clean kerosene See Storing Transporting or Shipping page 7 A WARNING High voltage Bad electrical connection between ignitor and ignition control assembly Defective ignitor Defective ignition control assembly 6 Check electrical connections See Wiring Diagrams page 25 Replace ignitor see page 12 Replace ignition control as sembly Heater ignites but ignition con trol asse
10. substitute a fuse with a higher current rating Gap Adjusting Screw see Fi 32 Blade Replace fuse cover see Figure 32 CN 003 004 7 Replace side cover see Figures 19 or 20 LPS a 076 101 mm page 11 reg N Gap Measured With Feeler l Msa Fuse Gauge ae Cover o We Rotor Fuse Gap Adjusting Screw Figure 30 Gap Adjusting Screw N Locations Sandpaper Figure 32 Replacing Fuse Figure 31 Sanding Rotor SPECIFICATIONS Model Size 40 55 70 115 165 Output Rating Btu Hr 40 000 55 000 70 000 115 000 165 000 Fuel Use only kerosene 1 2 diesel fuel oil JET A or JP 8 fuels Fuel Tank Capacity U S Gal Liters 3 11 3 5 18 9 5 18 9 9 34 13 5 51 Fuel Consumption Gal Per Hr Liters Per Hr 3 1 14 44 1 67 52 1 97 85 3 00 1 2 4 54 Pump Pressure psi 3 0 3 4 4 7 5 1 5 6 Electric Requirements 120 V 60 HZ Same All Models Amperage Normal Run 2 0 2 0 2 8 3 6 3 6 Motor RPM 1725 1725 3440 3440 3440 Hot Air Output CFM 170 180 360 490 575 Shipping Weight 32 14 5 35 15 9 35 15 9 54 24 5 65 29 5 Approximate lbs kg Heater Weight without Fuel 28 12 2 30 14 30 14 46 21 55 25 Approximate lbs kg Use of 2 diesel amp fuel oil will result in noticeable odor and could require additional fuel filter main tenance Use in extreme cold temperatures may require nontoxic anti icer additives 116170 01A www desatech com 15 ILLUSTRATED PARTS BREAKDOWN MODELS BC40 AND RC40
11. 2 Volts 120 Volts 10 Prior to plugging heater into generator the output voltage should be verified if generator is equipped with the au tomatic idle feature the output voltage should be measured with the generator running at full speed If the voltage does not measure in this range the heater should not be plugged into the generator Refer to Operation page 6 for starting stopping and resetting heater procedures Ground Lug Alternator Copper or Brass Grounding Point Ground Wire 10 AWG Stranded Copper Figure 10 Typical Generator Grounding Method Generator construction may vary from that shown STORING TRANSPORTING OR SHIPPING Note If shipping transport companies require fuel tanks to be empty 1 Drain fuel tank Note Some models have drain plug on underside of fuel tank If so re move drain plug to drain all fuel If heater does not have drain plug drain fuel through fuel cap opening Be sure all fuel is removed 2 Replace drain plug if provided 3 If any debris is noted in old fuel add 1 or 2 quarts of clean kerosene to tank stir and drain again This will prevent excess debris from clogging filters during future use 4 Replace fuel cap or drain plug Properly dis pose of old and dirty fuel Check with local automotive service stations that recycle oil 5 Ifstoring store heater in dry place Make sure storage place is free of dust and corrosive fumes IMPORTANT D
12. 5 No HA3005 103676 01 Nylon Elbow 90 Included in Filter Kit Part M8643 Blade 40 70 No HA3014 M8643 2 Blade 55 FHPF3 5C Screw 40 70 FHPF3 6C Screw 55 eo Included in Pump Adjustment Kit Part No HA3020 NNARARSROD2a2a2 a saw Baoan a naaa 22 www desatech com 116170 01A ILLUSTRATED PARTS BREAKDOWN MODELS BC115DT RC115DT UKC115DT BC165DT RC165DT AND UKC165DT 102001 30 079975 02 FHPF3 5C M22009 M22456 1 M50545 M12179 M16545 M8940 M10993 1 M27694 M22997 M12461 31 M12244 1 M11637 M50820 02 M8643 Motor Pump Body Screw 4410 32 x 5 8 Rotor Insert Pump Rotor Pump End Cover Intake Filter Filter End Cover Steel Ball 1 4 Diameter Relief Spring Adjusting Screw Plug Screw 410 32 x 1 Output Filter Lint Filter Barb Fitting Blade Included in Rotor Kit Part No HA3004 AA A IN Se a o das 116170 01A www desatech com 23 ILLUSTRATED PARTS BREAKDOWN WHEELS AND HANDLE PARTS LIST 1 KEY PART NUMBER NO 115 MODELS 165 MODELS DESCRIPTION QTY 079998 02 M51334 02 M12345 33 M12342 3 NTC 3BZ 107426 01 M28526 M51015 01 113193 01 099614 01 099614 02 M12345 33 M12831 5 NTC 3BZ 113326 01 M28526 M16801 5 113497 01 113193 01 Handle Front Handle Rear if provided Screw 10 24 x 1 Wheel Support Frame Hex Nut 10 24 Wheel Kit 115 Contains 2 Black Wheels and
13. 84 26 097293 01 102042 01 See page 23 M50631 101206 01 M12461 18 104068 02 NTC 4C 111037 01 M27417 107878 02 M51345 06 106896 01 M51151 01 M51151 02 M10990 3 M50814 03 098511 293 M50104 06 M50104 01 M11084 26 M11271 8 M10908 14 113279 02 113279 03 113280 02 113280 03 102349 01 M11143 1 113065 01 M51077 18 M11084 26 104460 01 104458 01 WLE 2 113461 01 103814 01 M9900 77 079010 46 116170 01A Upper Shell Service Part Will Be Black Screw 10 16 x 1 2 Combustion Chamber 115 Combustion Chamber 165 Photocell Bracket 115 Photocell Bracket 165 Screw 6 32 x 3 8 Photocell Assembly Burner Head Assembly Screw 10 16 x 3 8 Fan 115 Fan 165 Motor and Pump Assembly Rubber Bumper Motor Mounting Bracket Screw 8 32 x 7 8 Ignition Control Assembly Hex Lock Nut 1 4 20 Fan Guard Drain Plug Includes o Ring Button Plug Fuel Line Fuel Filter Fuel Line Tube 115 Fuel Line Tube 165 Rubber Bushing Airline Lower Shell Service Part Will Be Black Bushing Bushing Screw 10 16 x 3 8 Clip Nut Screw 8 32 x 3 8 Fuel Tank 115 Fuel Tank 165 Fuel Cap w Gauge includes Gasket 115 Fuel Cap w Gauge includes Gasket 165 P C Board Support Strain Relief Bushing Power Cord Side Cover Screw 10 16 x 3 8 Thermostat Knob Thermostat Lock Washer EXT 8 ON OFF Switch with Light Wire Tie Not Shown Groups wires connected to Ignition Cont
14. Combustion Adapter Chamber a Nozzle Air Line Assembly Adapter Hose Assembly Fuel Line Photocell Hose Bracket Figure 24 Removing Air and Fuel Line Hoses 115 165 Models Only Figure 25 Removing Nozzle Adapter NOZZLE ASSEMBLY Assembly 1 Remove upper shell see Upper Shell Re moval page 10 Nozzle Face Remove fan see Fan page 10 3 Remove fuel and air line hoses from nozzle as sembly see Figure 23 page 12 or Figure 24 4 Turn nozzle assembly 1 4 turn to left and pull toward motor to remove see Figure 25 Nozzle Adapter 5 Pl lastic hex body into vise and lightl lace plastic hex body into vise and lightly Airing Fitting 6 Carefully remove nozzle from the nozzle adapter Fuel Line Fitting using 3 8 socket menda see Figur 26 Figure 26 Nozzle and Nozzle Adapter 7 Blow compressed air through face of nozzle This will free any dirt in nozzle area 8 Inspect nozzle sleeve for damage 9 Replace nozzle into nozzle adapter until nozzle seats Tighten 1 3 turn more using 5 8 socket wrench 4 5 to 5 1 N m 40 to 45 in lbs See Figure 26 10 Attach nozzle assembly to burner strap see Figure 25 116170 01A www desatech com 13 SERVICE PROCEDURES Continued FUEL AND AIR LINE REPLACEMENT AND PROPER ROUTING 1 Remove upper shell see Upper Shell Re moval page 10 2 Remove side cover screws using 5 16 nut driver see Figure 19 or 20 page 11 3 Remove side cover 4 Insp
15. DESA HEATING PRODUCTS CANADIAN PORTABLE FORCED AIR HEATERS OWNER S MANUAL MODELS BC40 RC40 BC55CT RC55CT UKC55CT BC70ET RC70ET UKC70ET BC115DT RC115DT UKC115DT BC165DT RC165DT AND UKC165DT HEATER SIZES 40 55 70 115 165 000 BTU HR MODELS H S I SERIES future reference IMPORTANT Read and understand this manual before assembling starting or servicing heater Improper use of heater can cause serious injury Keep this manual for TABLE OF CONTENTS Safety Informa ion ooocccnccnnccinconnccccoccnoncccnrcnancnos 2 Unpackind eana 3 Product Identification ooooonnicnnnninccnnnnonnccnnnccn 3 LL LL 00 DANFON FFYN EF FFF FFYN 4 Ventilation sioe ee Y YG YY GY ind 4 Theory of Operation sse enas antics 4 E A dni aieea 5 Opera FFEFRYN iia cra 6 Operation With Portable Generator 7 Fill In For Your Records Model No Located on side panel Serial No Located on fuel tank Date of Purchase Storing Transporting or Shipping 7 Preventative Maintenance Schedule 8 Troubleshooting iieri io YRU uaru YG ywn yda 8 Service Procedures 10 Specifications senera i 15 Illustrated Parts Breakdown and Parts List 16 Wiring DiagiraitlSi u ii die 2 lygu osdd yden tebe e nyni Warranty and Repair Service SP C US Save this manual for future reference For more in
16. and applicable 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 inside 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 762 cm from heaters torches welding equipment and similar sources of ignition exception 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 authority having jurisdiction Use only the electrical voltage and frequency specified on model plate Heater must be grounded Use only a properly grounded three wire extension cord Plug into grounded outlet only Use only in areas free of flammable vapors or high dust content Minimum clearance from any combustible materials 8 feet 244 cm from hot air outlet 4 feet 122 cm from top and 4 feet 122 cm from sides a
17. d minimum safe distance is 10 feet 304 8 cm Itis further recommended that these enclosure materials be of a fire retardant nature These enclosure materials shall be securely fastened to prevent them from igniting or from upsetting the heater due to wind action 22 Unplug heater when not in use 23 Never block air inlet rear or air outlet front of heater UNPACKING 1 Remove all packing items applied to heater for shipment Remove all items from carton 3 Check items for any shipping damage If heater is damaged promptly inform dealer where you bought heater PRODUCT IDENTIFICATION Hot Air Outlet Fan Guard Thermostat Ignition Control Assembly On Inside of Side Cover Figure 1 40 Model End Fuel Cap Cover Hot Air Outlet Fan Guard Thermostat Ignition Control Assembly On ON OFF Switch Inside of Side With Light Cover Fuel Cap Gauge Figure 2 55 70 Model Hot Air Outlet Thermostat Knob Ignition Control Assembly On Inside of Side Cover Figure 3 115 Model ON OFF Switch with Light Fuel Cap Gauge Hot Air Outlet Thermostat Knob Fan Guard ON OFF Switch Ignition Control with Light Assembly On Inside of Side Cover Figure 4 165 Model 116170 01A www desatech com 3 FUELS VENTILATION AX WARNING Use only kero sene 1 2 diesel fuel oil JET A or JP 8 fuels to avoid risk of fire or explosion Never use gasoline o
18. e Cover Figure 19 Fuel Filter Removal 40 55 70 Models Fuel Filter Bushing and Lower Fuel Line Zi Upper Fuel Line Figure 20 Fuel Filter Removal 115 165 Models 116170 01A www desatech com 11 SERVICE PROCEDURES Continued IGNITOR 1 Remove upper shell and fan guard See Upper Shell Removal page 10 Remove fan see page 10 3 Remove 4 side cover screws with a 5 16 nut driver Remove side cover see Figures 19 or 20 page 11 4 Disconnect ignitor wires from ignition control assembly see Figure 21 Pull the ignitor wires up through the hole in the lower shell 5 Disconnect fuel line hose and air line hose Remove photocell from photocell bracket see Figure 21 6 Remove combustion chamber Stand com bustion chamber on end with nozzle adapter bracket on top see Figure 22 7 Remove ignitor screw with a 1 4 nut driver Carefully remove ignitor from nozzle adapter bracket AX CAUTION Do not bend or strike ignitor element Handle with care 8 Carefully remove replacement ignitor from packing 9 Carefully guide ignitor into opening in nozzle adapter bracket Do not strike ignitor element Attach ignitor to nozzle adapter bracket with screw using a 1 4 nut driver see Figure 23 Torque 90 to 1 69 N m 8 to 15 in Ibs Do not over torque 10 Replace combustion chamber 11 Route the ignitor wires back down through the hole in the lower shell Connect wires to the ignitio
19. e the right to amend these specifications at any time without notice Illustrated parts lists can be obtained free of charge Send a self addressed stamped envelope to the address listed below List the heater model number and the date located in the lower right corner of this page A service manual may be purchased from the address listed below Send a cheque for 5 00 payable to DESA Industries When writing for information regarding your heater be sure to include the model number and serial number as shown on the model plate INDUSTRIES OF CANADA INC 2220 Argentia Road Unit 4 Mississauga Ontario L5N 2K7 905 826 8010 Fax 905 826 8236 Printed in USA
20. ect fuel and air line hoses for cracks and or holes If fuel line hose is damaged disconnect from nozzle adapter see Figure 23 or 24 and from fuel filter see Fuel Filter page 11 If air line hose is damaged disconnect from nozzle adapter see Figure 23 page 12 or Figure 24 page 13 and from barb fitting on pump end cover see Figure 27 5 Install new air and or fuel line Attach one end of air line hose to barb fitting on pump end cover see Figure 27 and the other end to nozzle adapter see Figure 23 page 12 or Figure 24 page 13 Attach one end of fuel line hose to fuel filter see Fuel Filter page 11 and the other end to nozzle adapter see Figure 23 page 12 or Figure 24 page 13 Note Route hoses as shown in Figure 23 page 12 or Figure 24 page 13 according to model Hoses are not to touch photocell bracket 6 Replace side cover 7 Replace upper shell and fan guard see Upper Shell Removal page 10 Pump End Cover Barb Fitting Barb o Fitting a Hose 40 55 70 Models 115 165 Models Figure 27 Air Hose to Barb Fitting PUMP ROTOR Procedure if Rotor is Binding 1 Remove upper shell see Upper Shell Re moval page 10 2 Remove filter end cover screws using 5 16 nut driver see Figure 28 or 29 3 Remove filter end cover and air filters 4 Remove pump plate screws using 5 16 nut driver 5 Remove pump plate 6 Remove rotor insert and blades see Figure 28 or 29 7
21. formation visit www desatech com SAFETY INFORMATION Ay WARNING This product contains and or generates chemicals known to the State of California to cause cancer or birth defects or other reproduc tive harm IMPORTANT Read this owner s manual carefully and completely before trying to assemble operate or service this heater Improper use of this heater 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 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 pregnant 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 warn ings Keep this manual for reference It is your guide to safe and proper operation of this heater 1 Use only kerosene 1 2 diesel fuel oil JETA or JP 8 fuels to avoid risk of fire or explosion Never use gasoline naphtha paint thinners alcohol or other highly flammable fuels 2 Fueling a Personnel involved with fueling shall be qualified and thoroughly familiar with the manufacturer s instructions
22. guard on top of upper shell flange Make sure nose cone guard is on hot air outlet end of heater 2 Insert screws through nose cone guard and upper shell flange 3 Tighten screws firmly Nose Cone Guard Hot Air Outlet Upper Shell Flange Figure 6 Nose Cone Guard Assembly 40 55 70 Models Only FOR 115 AND 165 MODELS ONLY These models are furnished with wheels and a handle Some models are furnished with a second handle also Wheels handle s and the mounting hardware are found in the shipping carton Tools Needed Medium Phillips Screwdriver 3 8 Open or Adjustable Wrench e Hammer 1 Slide axle through wheel support frame Install wheel spacers if provided Install wheels on axle IMPORTANT When installing wheels point extended hub of wheels toward wheel support frame see Figure 7 2 Place cap nuts on axle ends Gently tap with hammer to secure 3 Place heater on wheel support frame Line up holes on fuel tank flange with holes on wheel support frame Be sure wheels are mounted under the air inlet of heater 4 Place handle s on top of fuel tank flange In sert screws through handle s fuel tank flange and wheel support frame Attach nut finger tight after each screw is inserted If only one handle is provided be sure to mount handle over outlet end of heater 5 After all screws are inserted tighten nuts firmly Cord Cleat with Bolts and Nuts If provided Handle If Y A provided
23. il drained from crankcases naph tha paint thinners alcohol or other highly flammable fuels Use only kerosene 1 2 diesel fuel oil JET A or JP 8 fuels Heavier fuels such as No 2 fuel oil or No 2 diesel fuel may also be used but will result in e noticeable odor e additional fuel filter maintenance e the need for nontoxic anti icer additives in very cold weather Do not use fuels heavier than No 2 grade or heavy oils such as oil drained from crankcases These heavy oils will not ignite properly and will contaminate the heater IMPORTANT Use a KEROSENE ONLY blue or DIESEL ONLY yellow storage container Be sure storage container is clean Foreign matter such as rust dirt or water will cause the ignition control assembly to shut down heater Foreign matter may also require heater s fuel system to be frequently cleaned WARNING Provide afresh air opening of at least three square feet 2 800 square cm for each 100 000 Btu hr rating Provide extra fresh air if more heaters are being used The minimum ventilation requirements must be followed to avoid risks as sociated with carbon monoxide poisoning Make certain these requirements are met prior to operating heater Example A 200 000 Btu Hr 58 6 kw heater requires one of the following e a two car garage door 16 feet 4 88 meter opening raised 5 inches 12 7 cm e a single car garage door 9 feet 2 74 meter opening raised 8 i
24. mbly shuts heater off after a short period of time 1 Un B amp W a Pump pressure incorrect Dirty air intake air output and or lint filter Dirty fuel filter Obstruction in nozzle Photocell assembly not properly installed not seeing the flame Dirty photocell lens Rw 6 See Pump Pressure Adjust ment page 11 See Air Output Air Intake and Lint Filters page 10 See Fuel Filter page 11 See Nozzle Assembly page 13 Make sure photocell boot is properly seated in bracket Clean photocell lens A WARNING High voltage Bad electrical connection between photocell and ignition control assembly Defective photocell de 8 Check electrical connections See Wiring Diagrams page 25 Replace photocell 9 Defective ignition control as 9 Replace ignition control as sembly sembly 116170 01A www desatech com 9 SERVICE PROCEDURES A WARNING To avoid risk of burn and electrical shock never attempt to service heater while it is plugged in operating or hot UPPER SHELL REMOVAL 1 Remove screws along each side of heater using 5 16 nut driver These screws attach upper and lower shells together See Figure 11 or 12 Lift upper shell off 3 Remove fan guard a Upper Shell Fan Guard NSS Figure 11 Upper Shell Removal 40 55 70 Models Only A uy Fan Guard Figure 12 Upper Shell Removal 115 165
25. n control assembly see Figure 22 12 Replace side cover see Figures 19 or 20 page 11 13 Connect and route fuel line hose and air line hose to nozzle adapter assembly See Fuel and Air Line Replacement and Proper Routing page 14 14 Replace photocell in photocell bracket Route wires as shown in either see Figure 23 or Figure 24 page 13 15 Replace fan see page 10 16 Replace fan guard and upper shell see page 10 Nozzle Combustion Adapter Chamber Bracket Air Line Hose Fuel Line Hose Ignitor Wire Photocell Bracket Ignition Photocell Control Assembly Assembly Side Cover Figure 21 Disconnecting Ignitor Wires from Ignition Control Assembly Ignitor Screw Washer Assembly Ignitor Ignitor Element Nozzle Photocell Adapter Bracket Bracket Combustion__ Chamber Nozzle Adapter Bracket Opening Figure 22 Ignitor Replacement Combustion Chamber sa Nozzle Adapter Bracket Photocell Bracket Air Line Hose Figure 23 Removing Air and Fuel Line Hoses 40 55 70 Models Only 12 www desatech com 116170 01A SERVICE PROCEDURES 11 Attach fuel and airline hoses to nozzle as Continued sembly See Fuel and Air Line Replacement and Proper Routing page 14 e 12 Replace fan see Fan page 10 13 Replace fan guard and upper shell see Upper Nozzle Shell Removal page 10 Adapter Bracket Nozzle
26. nches 20 3 cm e two 30 inch 76 2 cm windows raised 15 inches 38 1 cm THEORY OF OPERATION The Fuel System The air pump forces air through the air line The air is then pushed through the nozzle This air causes fuel to be lifted from the tank A fine mist of fuel is sprayed into the combus tion chamber The Air System The motor turns the fan The fan pushes air into and around the combustion chamber This air is heated and provides a stream of clean hot air The Ignition System The ignition control assembly provides power to the ignitor This ignites the fuel air mixture in the combustion chamber The Flame Out Control System This system causes the heater to shut down if the flame goes out Combustion Chamber Ignitor F Motor Air Pump Air intake Filter y a Clean al Heated UR Cool Air In Air Out lt p dde de y Output Filter Fuel Tank Nozzle Fuel Air Line Ignition Control Filter To Burner Assembly Air For Fuel ga Air For qa lt System Combustion Fuel And Heating Figure 5 Cross Section Operational View 4 www desatech com 116170 01A ASSEMBLY FOR 40 55 AND 70 MODELS ONLY These models are furnished with a nose cone guard Nose cone guard and mounting screws are found in the shipping carton Tools Needed 5 16 nut driver or wrench 1 Place nose cone
27. nd inlet Locate heater on a stable and level surface while hot or operating or a fire may occur Use only in well vented areas Before using heater provide at least a three square foot 2800 square cm opening of fresh outside air for each 100 000 Btu Hr 30 kw of rating Keep children and animals away from heater at all times Never start heater when combustion chamber is hot or if fuel has accumulated in combustion chamber When used with thermostat heater may start at anytime When heater is moved or stored it must be in a level position or fuel spillage may occur Use heater only in accordance with local ordinances and codes Never use gasoline crankcase drainings naphtha paint thinners alcohol or other highly flammable fuels Never use heater where gasoline paint thinner or other highly flammable vapors are present 2 www desatech com 116170 01A SAFETY INFORMATION Continued 16 Never use heater in living or sleeping areas 17 Never leave a heater plugged in without adult supervision if children or animals are likely to be present 18 Never move handle refuel or service a hot operating or plugged in heater 19 Never attach duct work to front or rear of heater 20 Never attach heater to external fuel tank 21 Heaters used in the vicinity of tarpaulins canvas or similar enclosure materials shall be located a safe distance from such materials The recommende
28. o not store kerosene over summer months for use during next heating season Using old fuel could damage heater 116170 01A www desatech com T PREVENTATIVE MAINTENANCE SCHEDULE A WARNING Never service heater while it is plugged in operating or hot Severe burns and electrical shock can occur Item How Often How To Fuel tank Flush every 150 200 hours of operation or as needed Air output and lint filters Replace every 500 hours of operation or once a year Air intake filter Wash and dry with soap and water every 500 hours of operation or as needed See Storing Transporting or Shipping page 7 See Air Output Air Intake and Lint Filters page 10 See Air Output Air Intake and Lint Filters page 10 Fuel filter Clean twice a heating season or as See Fuel Filter page 11 needed Ignitor No maintenance required Fan blades Clean every season or as needed See Fan page 10 Motor Not required permanently lubricated TROUBLESHOOTING A WARNING Never service heater while it is plugged in operating or hot Severe burns and electrical shock can occur FAULT CONDITION POSSIBLE CAUSE REMEDY Motor does not start five seconds 1 No power to heater after heater is plugged in 2 ON OFF switch not in the ON l position 3 Thermostat setting is too low 1 Check circuit breaker in elec trical panel 2 Verify the ON OFF switch is in ON l position and light is on 3 Turn thermostat
29. only through authorized dealers and service centers This warranty does not cover defects resulting from misuse abuse negligence accidents lack of proper maintenance normal wear alteration modification tampering contaminated 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 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE DESA Industries assumes no responsibility for indirect incidental or consequential damages Some states do not allow the exclusion or limitation of incidental or consequential 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 province to province WARRANTY SERVICE Should your heater require service return 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 Industries will repair or replace the heater without charge REPAIR SERVICE Return the heater to your nearest authorized service center Each Service Center is independently owned and operated Repairs not covered by the warranty will be billed at standard prices We reserv
30. rol Assembly Wire Not Shown Connects T stat to Ignition Control Assembly Wire Not Shown Connects ON OFF Switch to Ignition Control Assembly or Thermostat if Equipped www desatech com am 8 1 1 1 1 2 1 1 2 1 1 1 2 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 6 8 1 1 1 1 1 5 1 1 2 8 1 1 1 1 21 ILLUSTRATED PARTS BREAKDOWN BURNER HEAD ASSEMBLY KEY PART wo iun foesenenon lan HA3006 Nozzle Assembly 40 HA3024 Nozzle Assembly 55 HA3026 Nozzle Assembly 70 HA3027 Nozzle Assembly 115 HA3028 Nozzle Assembly 165 HA1000 Ignitor Kit M10908 75 Screw 6 32 x 7 8 102336 01 Nozzle Adapter Bracket 104056 01 Nozzle Adapter 40 104054 01 Nozzle Adapter 55 70 115 165 103347 01 Washer MOTOR AND PUMP ASSEMBLY MODELS BC40 RC40 BC55CT RC55CT UKC55CT BC70ET RC70ET AND UKC70ET 102001 01 Motor 40 55 102001 20 Motor o 079975 02 Pump Body 40 70 079975 03 Pump Body 55 M22009 Insert M22456 1 Rotor 40 amp 70 M22456 2 Rotor 55 M29608 Pump End Cover M29632 Lint Filter M29633 Intake Filter M29609 Filter End Cover M12461 31 Screw 10 32 x 1 M27694 o Adjusting Screw M10993 1 Pressure Relief Spring M22997 o Plug M8940 o Steel Ball 1 4 Diameter Included in Rotor Kit Part M29612 01 Output Filter No HA3004 M12461 31 Screw 10 32 x 1 40 70 Included in Rotor Kit Part M12461 32 Screw 10 32 x 1 1 a 5
31. s your heater even more portable and convenient Fits 40 55 70 models 26 www desatech com 116170 01A NOTES 116170 01A www desatech com 27 WARRANTY AND REPAIR SERVICE KEEP THIS WARRANTY Model No Serial No Date of Purchase LIMITED WARRANTIES FOR NEW AND FACTORY RECONDITIONED PRODUCTS New Products DESA Industries warrants this heater and any parts thereof to be free of defects in materials and workmanship for one 1 year from the date of first purchase when operated and maintained in accordance with the manufacturer s instructions These warranties are extended only to the original retail purchaser when proof of purchase is provided Factory Reconditioned Heaters DESA Industries warrants this factory reconditioned heater and any parts thereof to be free of defects in materials and workmanship for thirty 30 days from the date of first purchase when oper ated and maintained in accordance with the manufacturer s instructions These warranties are extended only to the original retail purchaser when proof of purchase is provided These warranties cover only the cost of parts and labor required to restore the product to proper operating condition Transportation and incidental costs associated with warranty repairs are not reimbursable under this warranty Warranty service is available
32. t least six feet 1 8 meters long Light Extension Cord Size Requirement 6 to 10 feet 1 8 to 3 meters long use 18 AWG 0 75 mm rated cord ea da NU long use Figure 8 ON OFF Switch 55 70 Models 101 to 200 feet 30 8 to 61 meters long use 14 AWG 1 5 mm rated cord 7 Plug extension cord into standard 120 volt 60 hertz 3 prong grounded outlet Note For ON OFF dr heater without ON OFF switch ignitor will Switch with preheat for five seconds then heater will Light start Note For heater with ON OFF switch push switch to ON l position and heater should start in 5 seconds If heater does not start see Troubleshooting page 9 Figure 9 ON OFF Switch 115 165 8 For thermostat models adjust thermostat knob Models to the desired setting Note A cold heater may affect the thermostat setting This thermostat is a general heating control It is not intended for precise temperature control Adjust thermostat until heater cycles at the desired setting 6 www desatech com 116170 01A OPERATION WITH PORTABLE GENERATOR A WARNING Before operating heater or any appliance from a portable generator verify that generator has been properly con nected to earth ground Improper grounding or failure to ground generator can result in electro cution if a ground fault occurs Referto owner s manual supplied by generator manufacturer for proper grounding procedures The operating voltage range of the heater is 108 to 13
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