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PORTABLE FORCED
AIR HEATER
(WITH BUILT-IN THERMOSTAT)
OWNER'S MANUAL
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.
TABLE OF CONTENTS
SAFETY INFORMATION ............................................. 2
PRODUCT IDENTIFICATION ...................................... 3
THEORY OF OPERATION .......................................... 3
UNPACKING ................................................................ 3
FUELS ......................................................................... 4
VENTILATION .............................................................. 4
OPERATION ................................................................ 4
OPERATION WITH PORTABLE GENERATOR .......... 4
STORING, TRANSPORTING, OR SHIPPING............. 5
PREVENTATIVE MAINTENANCE SCHEDULE .......... 5
Fill In For Your Records
Model No. ___________________
(Located on side panel)
Serial No. ___________________
(Located on fuel tank)
TROUBLESHOOTING ................................................. 6
SERVICE PROCEDURES ........................................... 7
REPLACEMENT PARTS ........................................... 10
TECHNICAL SERVICE .............................................. 10
SPECIFICATIONS ..................................................... 11
ACCESSORIES ......................................................... 11
WIRING DIAGRAM .................................................... 11
ILLUSTRATED PARTS BREAKDOWN ..................... 12
PARTS LIST ............................................................... 13
WARRANTY AND REPAIR SERVICE ....................... 14
®
Heater Size:
70,000 Btu/Hr
H.S.I. Series
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Summary of Contents for Desa SB70DT
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Page 1: Table Of Contents
PORTABLE FORCED Heater Size: AIR HEATER 70,000 Btu/Hr H.S.I. Series (WITH BUILT-IN THERMOSTAT) OWNER’S MANUAL 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. TABLE OF CONTENTS SAFETY INFORMATION .......... -
Page 2: Safety Information
• SAFETY INFORMATION SAFETY c) All flame, including the pilot light, if any, • Use only in places free of flammable va- shall be extinguished and the heater al- pors or high dust content. INFORMATION lowed to cool, prior to fueling. •... -
Page 3: Product Identification
• PRODUCT IDENTIFICATION • THEORY OF OPERATION • UNPACKING PRODUCT IDENTIFICATION UNPACKING Upper Shell Remove all packing items applied to Hot Air Outlet heater for shipment. Thermostat Knob Remove all items from carton. Handle 3. Check items for shipping damage. If heater is damaged, promptly inform Fan Guard dealer where you bought heater. -
Page 4: Fuels
• FUELS • VENTILATION • OPERATION • OPERATION WITH PORTABLE GENERATOR FUELS OPERATION TO RESET HEATER Unplug extension cord from outlet and wait 10 seconds (two minutes if heater WARNING: Use only kerosene WARNING: Review and un- has been running). or No. -
Page 5: Storing, Transporting, Or Shipping
• STORING, TRANSPORTING, OR SHIPPING • PREVENTATIVE MAINTENANCE SCHEDULE STORING, PREVENTATIVE WARNING: Never service heater TRANSPORTING, MAINTENANCE while it is plugged in, operating, or hot. Severe burns and electrical shock can OR SHIPPING SCHEDULE occur. Note: If shipping, transport companies re- quire fuel tanks to be empty. -
Page 6: Troubleshooting
• TROUBLESHOOTING TROUBLESHOOTING WARNING: Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur. Note: For additional help, visit DESA International’s technical service web site at www.desatech.com. POSSIBLE CAUSE OBSERVED FAULT REMEDY 1. -
Page 7: Service Procedures
• SERVICE PROCEDURES SERVICE PUMP PRESSURE ADJUSTMENT PROCEDURES Remove pressure gauge plug from filter end cover. Motor WARNING: Never service Install accessory pressure gauge (part heater while it is plugged in, op- number HA1180). erating, or hot. Severe burns and electrical shock can occur. - Page 8 • SERVICE DPROCEDURES Ignitor Screw/ SERVICE Remove combustion chamber. Stand Washer combustion chamber on end with PROCEDURES Assembly nozzle adapter bracket on top (see Fig- ure 11). Continued Ignitor Remove ignitor screw with a 1/4" nut Ignitor driver. Carefully remove ignitor from Element WARNING: Never service Nozzle Adapter...
- Page 9 • SERVICE PROCEDURES SERVICE FUEL AND AIR LINE Combustion Chamber REPLACEMENT AND PROCEDURES PROPER ROUTING Continued Burner Remove upper shell (see Upper Shell Strap NOZZLE ASSEMBLY Removal, page 7). Remove side cover screws using 5/16" Remove upper shell (see page 7). nut driver (see Figure 9, page 8).
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Page 10: Replacement Parts
16. Perform steps 10 through 12 above. TECHNICAL SERVICE You may have further questions about op- eration 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 site www.desatech.com. For more information, visit www.desatech.com 104020... -
Page 11: Specifications
Purchase accessories and parts from your nearest dealer or service center. If they can not supply these accessories or parts, either contact your nearest Parts Central or DESA International for referral information. Parts Centrals are listed in the Authorized Service Center booklet supplied with heater. -
Page 12: Illustrated Parts Breakdown
• ILLUSTRATED PARTS BREAKDOWN ILLUSTRATED PARTS BREAKDOWN 70,000 BTU/HR H.S.I. SERIES 12-1 12-2 12-3 12-4 12-5 12-6 12-18 12-7 12-17 12-8 12-16 12-9 12-15 12-10 12-14 12-19 Motor and Pump Assembly 12-13 12-12 12-11 For more information, visit www.desatech.com 104020... -
Page 13: Parts List
• PARTS LIST This list contains replaceable parts used in your heater. When ordering parts, be sure to provide the correct PARTS LIST model and serial numbers (from the model plate), then the part number and description of the desired part. 70,000 BTU/HR H.S.I. -
Page 14: Warranty And Repair 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 International will repair or replace the heater without charge.