By Roger Vizi
ISBN-10: 0071341714
ISBN-13: 9780071341714
* entire Troubleshooting & Repairing consultant to sizzling air furnaces * whole operation, upkeep, and service * Covers gasoline, oil, and electrical pressured air structures * contains flowcharts and highlighted counsel and options to universal furnace difficulties
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Additional resources for Forced Hot Air Furnaces : Troubleshooting and Repair
Sample text
In some cases, where the motor has been replaced with a more modern motor, there will be no oil ports. In this case, you have a sealed bearing unit, and no lubrication is required. Next, remove the belt from the pulleys. To do this, pull the belt over one of the pulleys, and rotate the pulley clockwise to remove the belt. Care must be taken not to get your fingers caught between the belt and the pulley. 1/ ” TO 1/ ” 4 2 Turn the belt inside out, and examine it. 11 belt will need to be replaced.
Recent federal legislation requires new forced air heating systems to have efficiency ratings of 78 percent or higher, which means that they may produce flue gases with temperatures of 200°F or less. A chimney that worked well with a lower-efficiency forced air heating system may begin to show signs of staining or material breakdown when a high-efficiency forced air heating system is installed as a result of the lower flue gas temperatures. This lower flue gas temperature will allow the combustion gases to condense in the chimney.
By knowing that the low-voltage circuit only operates the thermostat and low-voltage side of the gas valve, as an example, you can eliminate the circuit if the problem involves the blower not operating. This knowledge will save valuable troubleshooting time. 4 shows a typical wiring diagram for a spark ignition gas forced air heating system. CHAPTER 5 Operation of a Gas Forced Air Heating System T here are three types of gas forced air heating systems that you will encounter as a heating professional.
Forced Hot Air Furnaces : Troubleshooting and Repair by Roger Vizi
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