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Lennox 14T65 Combustion Air Pressure Switch Kit

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4  Reviews Add Your Review
Special Price $66.33 Regular Price $76.28
In stock
SKU
14T65
The Lennox 14T65 Combustion Air-Pressure Switch Kit is anessential safety device that gas fired furnaces must have. It performs the function of a it measures the pressure inside the furnace combustion chamber. The function of a leaned combustion process can be summarized by the fact that proper tire pressure enables a safe and productive internal combustion process. They act like pressure switch that shuts the furnace off if the air pressure reduces to a certain level. This safety measure eliminate risks such as poor combustion and back pass or flue gas, which causes carbon monoxide leakage or fire.The single unitand has a Single Pole Single Throw Normally Open.
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HVAC Controls & Electrical, Switches, Pressure Switches
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Specifications

  • Configuration: SPST-N.O. Contact
  • Type: Combustion Air Pressure Switch Kit
  • Measure: Unit
  • Weight: 0.6lbs
Manufacturer Name: Lennox
Product Number: 14T65
OEM Part Number: 14T65
Product Description:  The 14T65 High Altitude Pressure Switch Kit is an essential safety component in furnace systems. Its primary function is to ensure that there is adequate airflow for combustion and venting, preventing potentially dangerous situations. The primary feature of a combustion air pressure switch is safety. It helps to ensure that there is sufficient air for combustion, preventing issues like incomplete combustion or back drafting, which could lead to the release of harmful gases, including carbon monoxide. The switch is designed to sense the pressure within the combustion or venting system. It typically operates based on a specific pressure threshold that, when not met, triggers a safety shutdown of the furnace. The combustion air pressure switches have an adjustable setpoint. This allows HVAC technicians to fine-tune the switch's activation point, ensuring it aligns with the specific requirements of the furnace and its venting system. The pressure switch is designed to be compatible with various HVAC furnace models. This versatility ensures it can be used in a wide range of heating systems.  In the event of a switch failure, many pressure switches incorporate a fail-safe mechanism to ensure that the furnace system shuts down, minimizing the risk of unsafe operation. These switches are capable of detecting both high and low pressures. This is important for detecting abnormal conditions in the combustion and venting system. The 14T65 High Altitude Pressure Switch Kit is generally designed for easy installation. They have standard mounting and wiring configurations, making replacement or installation straightforward. 

Key characteristics of the combustion air pressure switches for furnaces are:

  • Monitors combustion system pressure.
  • Allows for fine-tuning of activation threshold.
  • Shuts down the system in case of switch failure.
  • Ensures adequate airflow for safe combustion.

The combustion air pressure switch in an HVAC furnace system is a critical safety device designed to ensure proper airflow for combustion and venting. Its features include pressure sensing, adjustable setpoints, diagnostic indicators, compatibility, durability, fail-safe mechanisms, and safety certifications. These features collectively contribute to the safe and efficient operation of the furnace while minimizing the risk of dangerous situations.

Weight:0.6lbs/272.16g

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Product Questions (5)
Customer Questions
How often should the combustion air pressure switch be inspected or replaced?

Routine maintenance and inspection should be conducted annually by an HVAC professional. Replacement intervals may vary, but it's essential to follow manufacturer recommendations.

What role does the diagnostic indicator on the pressure switch play in maintenance?

The diagnostic indicator helps HVAC technicians quickly identify issues with the switch, making troubleshooting and maintenance more efficient and cost-effective.

Are there specific maintenance tasks that homeowners can perform to prolong the life of the combustion air pressure switch?

Homeowners can ensure the area around the switch is kept clean and free from obstructions. However, routine maintenance and calibration should be left to HVAC professionals.

What maintenance is required for the Lennox 14T65 Pressure Switch Kit?

Regularly inspect the pressure switch for dust, debris, or loose connections. Ensure tubing and electrical contacts are secure and clean. Proper maintenance ensures accurate airflow detection and safe operation. Always turn off power before servicing the unit.

What are common issues with the Lennox 14T65 Pressure Switch Kit?

  • Faulty or stuck switch contacts.
  • Inaccurate pressure readings.
  • Loose or disconnected tubing.
  • Intermittent system shutdowns due to false triggers.

Installation Steps

Step 1: Turn off the HVAC system power and gas supply.

Step 2: Remove the old combustion air pressure switch carefully, keeping screws and hardware organized.

Step 3: Position the new switch on the mounting bracket, aligning all connections.

Step 4: Reinstall any removed components securely, ensuring proper fit and seal.

Step 5: Reconnect gas and power, then test the furnace to ensure the switch operates correctly.

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