Assessments - 4, GPA: 4.5
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2. Place plastic cover caps over brass fittings on inlet connector and hose/regulator assembly. 3. Store in dry, clean and safe place. Do not store hose/regulator assembly inside heater combustion chamber. 4. When taking heater out of storage, always check inside of heater. Insects and small animals may place foreign objects in heater. Keep inside of heater free from combustible and foreign objects. MAINTENANCE WARNING: Never service heater while it is plugged in, connected to propane supply, operating or hot. Severe burns and electrical shock can occur. 1. Keep heater clean. Clean heater annually or as needed to remove dust and debris. If heater is dirty or dusty, clean heater with a damp cloth. 2. Inspect heater before each use. Check connections for leaks. Apply mixture of liquid soap and water to connections. Bubbles forming show a leak. Correct all leaks at once. 3. Inspect hose/regulator assembly before each use. If hose is highly worn or cut, replace. 4. Have heater inspected yearly by a qualified service agency. 5. Keep inside of heater free from combustible and foreign objects. 116699-01B SERVICE PROCEDURES WARNING: Never service heater while it is plugged in, connected to propane supply, operating or hot. Severe burns and electrical shock can occur. CLEANING FAN Clean fan every 500 hours of operation or as needed. 1. Remove screws on side cover using 5/16" nut-driver. 2. Remove side cover. 3. Detach the five motor wires from parts under heater shell. Be sure to detach only wires coming from motor. The five motor wires are: • white wire—to terminal board • black wire—to terminal board • blue wire—to thermal switch wire • orange wire—to solenoid valve • green wire—to grounding screw on shell 4. Remove fan guard from rear of heater. 5. Reach into rear of heater shell. Carefully pull motor wires through hole in bottom of shell. Note: Pull wires through hole one at a time. 6. Remove nuts and mounting bolts holding motor mount to shell. Use 3/8" nut-driver and 7/16" wrench. 7. Carefully pull motor and fan out of shell. IMPORTANT: Be careful not to damage fan. Do not set motor and fan down with the weight resting on fan. This could damage fan pitch. 8. Turn motor and fan around. Place motor and fan into shell backwards. Note: Motor will go into shell first (see Figure 7). 9. Line up rear mounting holes in shell with first hole on each side of motor mount (see Figure 7). Note: When holes are lined up, fan should be outside of shell. 10. Holding mounting bolt, carefully reach through fan blades into rear of heater. Be careful not to damage fan pitch. Insert bolt through motor mount and shell. With free hand, attach nut finger tight. Repeat process for other mounting hole. 11. Use 1/8" hex wrench to loosen setscrew which holds fan to motor shaft (see Figure 8). 12. Slip fan off motor shaft. 13. Clean fan using soft cloth moistened with kerosene or solvent. 14. Dry fan thoroughly. Grounding Terminal Thermal Screw Figure 8 - Fan, Motor Shaft and Setscrew Location Motor Shaft Fan Setscrew Figure 6 - Location of Fan and Motor Motor Wires Mounting Bolts Motor Mount Board Figure 5 - Location of Motor Wires Switch Wire Solenoid Valve Figure 7 - Fan and Motor Turned Around Rear Mounting Hole First Hole 116699-01B SERVICE PROCEDURES Continued 15. Replace fan on motor shaft. Make sure setscrew is touching back of flat surface on motor shaft (see Figure 9). 16. Place setscrew on flat of shaft. Tighten setscrew firmly (40-50 inch-pounds). 17. Remove two nuts and bolts securing motor mount to shell. 18. Pull motor and fan from shell. Turn motor and fan around. Carefully place back in shell. Note: Fan will go into shell first. 19. Line up mounting holes in shell with holes on motor mount. Replace four bolts through shell and motor mount. Insert bolts from outside of heater. Tighten nuts firmly. 20. Route motor wires through hole in bottom of shell (see Figure 6, page 7). 21. Connect motor wires as follows (see Figure 5, page 7): • white wire—to terminal board Note: Attach to empty connector on white wire side of terminal board • black wire—to terminal board Note: Attach to empty connector on black wire side of terminal board • blue wire—to thermal switch wire • orange wire—to solenoid valve • green wire—to grounding screw on shell 22. Replace side cover. 23. Replace fan guard. Fan Motor Shaft Setscrew Hub Figure 9 - Fan Cross Section SERVICE PUBLICATIONS You can receive an Illustrated Parts List free of charge. Send your request and a self-addressed, stamped envelope to DESA Heating Products (address on back page). Be sure to include the heater model number. You can purchase a service manual for $5. Make check payable to DESA Heating Products. SPECIFICATIONS • Output Rating - 225,000 to 375,000 (Btu/Hr) • Fuel - Propane/LP Vapor Only • Fuel Consumption Gallons(liters)/Hour -2.5 (9,4) Min/4.0 (15) Max Pounds(kg)/Hour -10.4 (4.7) Min/17.4 (7.9) Max • Supply Pressure To Regulator Minimum* -...