Heater ignites but flame is excessive
Causes:
1. Fuel pump pressure is too high.
2. Nozzle is worn.
3. Incorrect fuel.
Solutions:
1. Fuel pump pressure is too high. Attach a high pressure fuel gauge to the fuel pump and check the pump pressure. Adjust the pressure to the
manufacturer’s specifications with the adjustment on the fuel pump.
2. Nozzle is worn. With enough use, the impurities in the fuel traveling under high pressure thru the nozzle orifice can enlarge the orifice. This is
especially true when diesel fuel is used. A worn nozzle can cause the heater to run “rich” and possibly over fire the heater enough to activate the
safety thermostat and cause a shutdown. Replace after 400 hours of operation.
3. Incorrect fuel. Only use the manufacturer’s recommended fuels. Never use gasoline, paint thinner, solvents, or other flammable liquids. If you
suspect the fuel is incorrect, drain, flush and re-fill the tank with proper fuel.
17
3
Diagram B
Summary of Contents for HVF180
Page 4: ...4 TECHNICIAN ...
Page 5: ... CFM 5 6 ft ...
Page 18: ...Chimney Exhaust Set Up 18 9 ft 30 ft 15 ft 3 ft 12 ft ...
