Lennox 34M76 - ( 65288900 ) Pressure Switch, Actuates at 0.86" W.C.; Resets at 1.01" W.C.
Lennox 34M76 - ( 65288900 ) Pressure Switch, Actuates at 0.86" W.C.; Resets at 1.01" W.C.
Lennox 34M76 - (65288900) Pressure Switch
Actuates at 0.86" W.C. | Resets at 1.01" W.C.
The Lennox 34M76 Pressure Switch is a precision-calibrated safety device designed to monitor and control pressure within high-efficiency HVAC systems. As a critical part of the system’s safety and ignition sequence, this switch ensures that combustion air is flowing properly before allowing the furnace to ignite or continue operation. It protects both the system and the occupants by preventing operation under unsafe pressure conditions.
Product Overview:
- Manufacturer: Lennox
- OEM Part Number: 65288900
- Model: 34M76
- Pressure Settings:
- Actuation (Switch Closes): 0.86 inches of water column (W.C.)
- Reset (Switch Opens): 1.01 inches W.C.
- Type: Normally open, closes on pressure rise
- Terminal Configuration: Male spade connectors for quick installation
- Mounting: Side or surface mount – compact for tight furnace compartments
- Application: Used in negative or positive pressure sensing systems
Applications:
This switch is commonly found in condensing gas furnaces, where precise airflow and combustion pressure are essential. It ensures the inducer motor is moving sufficient air through the heat exchanger and venting system before gas flow is permitted. If the pressure falls outside of specified limits, the switch opens the circuit and halts ignition or shuts down the system.
Benefits:
- Enhances Safety: Prevents ignition under improper airflow or venting conditions
- System Protection: Helps avoid heat exchanger damage due to improper combustion
- Reliable Operation: Factory-calibrated for consistent, repeatable performance
- Quick Replacement: OEM fit ensures easy swap with existing switch in Lennox units
- Improves Efficiency: Keeps furnace running within designed pressure limits for optimal combustion
Typical Replacement For:
- Malfunctioning pressure switches causing error codes or ignition lockout
- Systems experiencing short cycling due to incorrect pressure detection
- Units needing scheduled maintenance or component upgrades
Compatibility:
Always refer to your furnace’s service manual or consult with an HVAC professional to ensure compatibility with your specific Lennox model.
Keep your Lennox heating system running safely and efficiently with the 34M76 Pressure Switch.
Available now at Beenimax.com – trusted source for original Lennox HVAC parts.
| Package Quantity | 1 Item |
|---|---|
| Item Returns | This item can be returned |
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