KEROSENE/DIESEL PORTABLE FORCED AIR HEATERS OWNER’S MANUAL New Straight Shell Design HEATER SIZES: 40,000 50,000 55,000 60,000 70,000 110,000 115,000 155,000 165,000 AND 200,000 BTU/HR MODELS H.S.I. SERIES IMPORTANT: Read and understand this manual before assembling, starting, or servicing heater. Improper use of heater can cause serious injury. Keep this manual for future reference. TABLE OF CONTENTS Safety Information ............................................... 2 Unpacking ..........................
SAFETY INFORMATION WARNING: This product contains and/or generates chemicals known to the State of California to cause cancer or birth defects, or other reproductive 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.
SAFETY INFORMATION Continued • Never move, handle, refuel, or service a hot, operating, or plugged-in heater. • Never attach duct work to front or rear of heater. • Never attach heater to external fuel tank. • Heaters used in the vicinity of tarpaulins, canvas, or similar enclosure materials shall be located a safe distance from such materials. The recommended minimum safe distance is 10 feet (304.8cm). It is further recommended that these enclosure materials be of a fire retardant nature.
FUELS VENTILATION WARNING: Use only kerosene, #1/#2 diesel/fuel oil, JET A or JP-8 fuels to avoid risk of fire or explosion. Never use gasoline, oil drained from crankcases, naphtha, paint thinners, alcohol or other highly flammable fuels. WARNING: Provide a fresh 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.
ASSEMBLY OPERATION (FOR 110/115/155/165/200 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 • Hammer 1. Slide axle through wheel support frame. Install wheel spacers if provided. Install wheels on axle.
OPERATION Continued TO RESTART HEATER Wthout ON/OFF Switch 1. Unplug extension cord from outlet and wait 10 seconds. (Wait two minutes if heater has been running.) 2. Repeat steps under To Start Heater. With ON/OFF Switch 1. Push ON/OFF switch to OFF (O) position and wait 10 seconds (2 minutes if heater has been running). 2. Repeat steps under To Start Heater, page 5. The operating voltage range of the heater is 108 to 132 Volts (120 Volts +/- 10%).
PREVENTATIVE MAINTENANCE SCHEDULE WARNING: Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur.
TROUBLESHOOTING Continued FAULT CONDITION POSSIBLE CAUSE REMEDY Motor starts and runs but heater does not ignite 1. No fuel in tank 2. Pump pressure incorrect 1. Fill tank with kerosene 2. See Pump Pressure Adjustment, page 10 3. See Fuel Filter, page 10 4. See Nozzle Assembly, page 13 5. Drain and flush fuel tank with clean kerosene. See Storing, Transporting, or Shipping, page 6 3. Dirty fuel filter 4. Obstruction in nozzle 5.
SERVICE PROCEDURES 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 10 or 11. 2. Lift upper shell off. 3. Remove fan guard. Screw 4. Clean fan using a soft cloth moistened with kerosene or solvent. 5. Dry fan thoroughly. 6. Replace fan on motor shaft.
SERVICE PROCEDURES Continued 6. Replace filter 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 15 - Air Output, Air Intake, and Lint Filters, 110/115/155/165/200 Models Only FUEL FILTER 1. Remove side cover screws using 5/16" nutdriver. 2. Remove side cover. 3. Pull upper fuel line off fuel filter neck (see Figure 18 or 19). 4.
SERVICE PROCEDURES Continued IGNITOR 1. Remove upper shell and fan guard (See Upper Shell Removal, page 9). 2. Remove fan (see page 9). 3. Remove 4 side cover screws with a 5/16" nut driver. Remove side cover (see Figures 18 or 19, page 10). 4. Disconnect ignitor wires from ignition control assembly (see Figure 20). 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 20). 6.
SERVICE PROCEDURES Continued Combustion Chamber Nozzle Adapter Bracket Photocell Bracket Air Line Hose Nozzle/ Adapter Assembly Fuel Line Hose Figure 23 - Removing Air and Fuel Line Hoses (40/50/55/60/70 Models Only) Combustion Chamber Nozzle Adapter Bracket Air Line Hose Fuel Line Hose Combustion Chamber Nozzle/ Adapter Assembly Nozzle/ Adapter Assembly Photocell Bracket Figure 24 - Removing Air and Fuel Line Hoses (110/115/155/165 Models Only) NOZZLE ASSEMBLY Figure 25 - Removing Nozzle/Adapter
SERVICE PROCEDURES Continued (For 200 Model Only) 1. Remove combustion chamber and ignitor by following steps 1 through 7 under Ignitor, pages 11 and 12. 2. Carefully place the ignitor in a safe location. 3. Remove two nozzle adapter bracket screws (see Figure 27). 4. Place hex-shaped aluminum nozzle adapter into vise (do not overtighten). 5. Carefully remove nozzle from nozzle adapter using 5/8" socket wrench (see Figure 28). 6. Blow compressed air through face of nozzle.
SERVICE PROCEDURES Blade Continued Pump Plate Air Intake Filter PUMP ROTOR (Procedure if Rotor is Binding) 1. Remove upper shell (see Upper Shell Removal, page 9). 2. Remove filter end cover screws using 5/16" nut driver (see Figure 30 or 31). 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 30 or 31). 7. Check for debris in pump. If debris is found, blow out with compressed air. 8.
SERVICE PROCEDURES Continued IGNITION CONTROL ASSEMBLY Fuse Clips Fuse Cover WARNING: High voltage! 1. Unplug heater. 2. Remove side cover screws (4) using 5/16" nutdriver to expose ignition control assembly. 3. Remove fuse cover (see Figure 34). 4. Remove fuse from fuse clips (see Figure 34). 5. Replace fuse with fuse of the same type and rating (GMA-10). Do not substitute a fuse with a higher current rating. 6. Replace fuse cover (see Figure 34). 7. Replace side cover (see Figures 18 or 19, page 10).
Photocell Blue Photocell Blue Photocell White Ignitor White Motor Return Green Green AC Neutral (L2) Motor 120V (L1) Red Black Motor Power Plug 120V/60Hz Yellow Ignition Control Assembly WIRING DIAGRAMS Ignitor Ignitor Yellow Photocell Blue Photocell Blue Photocell White Ignitor Motor Return Green White Green Motor AC Neutral (L2) 120V (L1) Red Black Motor Power Plug 120V/60Hz Black 2 Yellow Ignition Control Assembly (40 Models) 3 1 ON/OFF Switch with Light Black Ignito
Photocell Blue Photocell Blue Photocell White Ignitor Green White Motor Return Power Plug 120V/60Hz Green Motor 120V (L1) Red Black Motor Black AC Neutral (L2) Yellow Ignition Control Assembly WIRING DIAGRAMS Continued Thermostat Ignitor Ignitor Yellow Photocell Blue Photocell Blue Photocell White Ignitor Green White Motor Return Black 2 Green Motor AC Neutral (L2) Yellow Ignition Control Assembly (40 Models) 120V (L1) Red Black Motor 1 3 ON/OFF Switch Black with Light
ILLUSTRATED PARTS BREAKDOWN STANDARD MODEL R40, REM40, PK40, UK40, TK40, N40 THERMOSTAT MODELS R40T, REM40T, PK40T, UK40T, TK40T, N40T 4 1 2 5 110/115 Burner Head Assembly 9-1 35 9-2 9-5 3 9 7 6 11 9-4 9-3 8 21 10 18 20 12 13 22 16 23 24 28 25 26 27 30 29 34 38 39 36 37 33 19 17 15 31 18 14 32 www.desatech.
PARTS LIST 40 MODELS 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 NO.
ILLUSTRATED PARTS BREAKDOWN STANDARD MODEL R50, REM50, R55C, R60A, PK55, UK55,TK50, TK55,B55C, REM60A, R70E, B70E, RM60A, PK60, UK60, PK70, UK70 THERMOSTAT MODELS R50T, REM50T, R55CT, R60AT, PK55T, UK55T,TK50T, TK55T, B55CT, REM60AT, R70ET, B70ET, RM60T, PK60T, UK60T, PK70T, UK70T 4 1 2 5 9-1 35 9-5 3 9 7 6 11 9-4 8 21 10 18 20 9-3 12 13 22 16 23 24 28 25 26 27 30 29 34 38 39 37 33 36 19 17 15 31 20 32 www.desatech.
PARTS LIST 50/55/60/70 MODELS 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 NO.
ILLUSTRATED PARTS BREAKDOWN STANDARD MODELS PK110, R110D, R115D, B115D, PK115, UK110, TK110, TK115, REM115D, RM115D, B155D, REM155D, R165D, RM155D, PK155, UK155, TK155, B165D, R155D, B110D, RM110D, RM165D, REM110D, REM165D, PK165, UK165 THERMOSTAT MODELS R110DT, R115DT, B115DT, REM115DT, RM115DT, PK115T, UK110T, TK110T, TK115T, B155DT, REM155DT, R165DT, RM155DT, B165DT, PK155T, UK155T, TK155T, R155DT, B110DT, RM110DT, RM165DT, PK165T, UK165T, TK165T, REM110DT, REM165DT, SB115DT, SB165DT 2 Upper Tier Burner
PARTS LIST 110/115/155/165 MODELS 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.
ILLUSTRATED PARTS BREAKDOWN STANDARD MODELS R200B, PK200, UK200, TK200 THERMOSTAT MODELS RM200BT, B200BT, PK200T, UK200T, TK200T, REM200BT, R200BT 2 1 3 37 9 7 38 10 5 4 16 6 8 23 11 19 24 12 28 15 13 18 25 26 27 29 20 31 22 30 21 42 41 44 40 43 35 33 34 14 36 32 17 14 24 www.desatech.
PARTS LIST 200 MODELS 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 NO.
ILLUSTRATED PARTS BREAKDOWN BURNER HEAD ASSEMBLY FOR 40/50/55/60/70 MODELS WITH HA1000 IGNITOR 1 5 2 4 KEY NO. PART NUMBER DESCRIPTION 1 HA3006 HA3024 HA3026 HA1000 104056-01 102336-01 M10908-75 103347-01 Nozzle Assembly (40) Nozzle Assembly (50/55/60) Nozzle Assembly (70) Ignitor Kit Nozzle Adapter Nozzle Adapter Bracket Screw, Hex Head, Tapping Belleville Washer 2 3 4 5 6 3 QTY. 1 1 1 1 1 1 1 1 BURNER HEAD ASSEMBLY FOR 50/55/60 MODELS WITH 102548-08 IGNITOR 1 KEY PART NO.
ILLUSTRATED PARTS BREAKDOWN MOTOR AND PUMP ASSEMBLY FOR 40/50/55/60/70 MODELS 1 2 3 4 6 18 7 17 8 16 9 5 15 10 14 12 KEY NO.
ILLUSTRATED PARTS BREAKDOWN MOTOR AND PUMP ASSEMBLY FOR 110/115/155/165 MODELS 1 2 3 4 5 6 17 7 16 8 15 13 9 10 14 13 12 KEY NO.
ILLUSTRATED PARTS BREAKDOWN MOTOR AND PUMP ASSEMBLY FOR 200 MODELS 1 2 3 4 5 6 17 7 8 16 15 18 9 14 10 19 13 12 KEY PART NO. NUMBER DESCRIPTION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Motor Pump Body Screw, #10-32 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, #10-32 x 1" Output Filter Lint Filter Barb Fitting Blade Screw, #10-32 x 1.
ILLUSTRATED PARTS BREAKDOWN WHEELS AND HANDLE PARTS LIST 1 9 2 3 4 5 6 KEY PART NO. NUMBER 1 2 3 4 5 HA2303 HA2304 M12345-33 M12342-3 M12831-5 NTC-3BZ 107426-01 113326-01 6 7 8 9 M28526 M51015-01 M16801-5 113497-01 113193-01 7 PART DESCRIPTION QTY.
TECHNICAL SERVICE You may have further questions about installation, operation, or troubleshooting. If so, contact DESA Heating Products’ Technical Service Department at 1-866-672-6040. When calling please have your model and serial numbers of your heater ready. You can also visit DESA Heating Products’ technical services web site at www.desatech.com. ACCESSORIES Purchase accessories and parts from your nearest dealer or service center.
WARRANTY AND REPAIR SERVICE LIMITED WARRANTY DESA Heating Products warrants this product and any parts thereof, to be free from defects in materials and workmanship for one (1) year from the date of first purchase when operated and maintained in accordance with instructions. This warranty is extended only to the original retail purchaser, when proof of purchase is provided. This warranty covers only the cost of parts and labor required to restore the product to proper operating condition.
