Back to Training

Become A Top Selling Salesman

0% Complete
0/0 Steps
  1. Mentality Of A Top Salesman

    Intro
  2. Waking Up In The Morning
  3. Driving To Work
  4. Being On Time
  5. Reading The Job History
  6. Pre-Screen Call Using Zillow
  7. Walking Up To The Home
  8. Mentality Quiz
    1 Quiz
  9. Sales & Estimate Process
    Why To Buy Today
  10. Setting The Stage
  11. Building Urgency Early
  12. Attic Inspection
  13. Measurements
  14. How To Use Presentation Book
  15. Going Over Options
  16. Step Financing Explained
  17. How To Reset The One Legger
  18. Selling Your Company
  19. How To Peak A Customers Interest
  20. Install Incentive Close
  21. Asking For Their Business
  22. Post Close
  23. Explaining A Single Stage Furnace
  24. Explaining A Single Stage AC System
  25. Explaining A Variable 2 Stage AC System
  26. Explaining A Variable Stage Furnace
  27. Sales & Estimate Quiz
    1 Quiz
  28. IAQ & Ducting
    Drawing Their Duct System
  29. Insulation Level Check
  30. Attic Inspection
  31. Duct Inspection
  32. Dampers Explained
  33. Greyflex Ducting
  34. Asbestos Ducting
  35. Mylar Ducting
  36. Explaining A UV Light
  37. IAQ & Duct Quiz
    1 Quiz
  38. How To Build Urgency
    4 Reasons To Replace Your Ducts
  39. Turning Over A System To A Salesman
  40. Turning Over A System To Yourself
  41. Shoulder Season
  42. Next Day Installation
  43. Creating Urgency With A Poor Condition Heat Exchanger
  44. Building Urgency Quiz
    1 Quiz
  45. MISC
    Inspecting Tubular Heat Exchanger
  46. Explaining Tubular Heat Exchanger
  47. Inspecting Serpentine Heat Exchanger
  48. Explaining Serpentine Heat Exchanger
  49. Inspecting Lennox Duracurve Heat Exchanger
  50. Explaining Clamshell Heat Exchanger
  51. Heating Sequence Of Operation
  52. Drawing A System
  53. Rat Check
  54. Ladder Drop Attic Access
Video 51 of 54
In Progress

Heating Sequence Of Operation


Understanding the sequence of operations for a gas furnace is crucial for troubleshooting, diagnosing issues, and explaining to homeowners how their system operates. The process begins when the thermostat signals for heat, triggering the furnace’s sequence of operations, starting with the inducer draft motor. This motor plays a vital role in safely expelling flue gases from the furnace and heat exchanger out of the home. Upon activation, the motor checks for any blockages in the flue pipe. If clear, it proceeds to close the circuit to the pressure switch via its air tube. However, if there’s an obstruction, such as debris or a bird’s nest, the circuit on the pressure switch cannot close.

Pressure switches serve as a safeguard, ensuring the circuit completes only when properly pressurized. Once the circuit is energized, it heats up significantly, glowing bright orange or yellow. The presence of gas then ignites, creating a flame. The hot surface igniter (HSI), once at the required temperature, signals the electronic gas valve to open, allowing natural gas to flow through the burners and ignite upon contact with the HSI.

Another critical safety component is the flame sensor, which prevents gas from accumulating in your home if the burners fail to ignite. It converts the heat from the flame into a microampere signal sent to the control board. Failure to detect a flame within a few seconds results in the electronic gas valve shutting down to prevent gas leakage. If operating correctly, the system maintains the burner’s flame, warming up the heat exchanger for about 20 to 30 seconds before the blower motor activates. This motor circulates cool air from the home across the heated exchanger, warming the air by approximately 30 to 50 degrees Fahrenheit until it achieves the thermostat’s set temperature. Upon reaching the desired temperature, the system shifts to standby mode, marking the completion of the gas furnace’s sequence of operations.

Responses

Your email address will not be published. Required fields are marked *