
Laars Heating Systems E2304800 Limit Switch
The Laars Heating Systems E2304800 Limit Switch is a mission-critical safety component engineered for high-temperature protection in hydronic boiler and water heater applications. As a manual reset high limit switch, this device is designed to interrupt the burner circuit when internal temperatures exceed safe operating parameters, specifically calibrated for Laars MightyTherm2 and Pennant series models. For standard boiler configurations, the E2304800 typically operates with a factory setpoint of 240°F, while volume water heater variants may utilize a 200°F threshold. This SPDT limit switch employs a remote bulb-type sensor, often installed in the outlet side of the header to monitor the primary heating medium. Integrating a Laars E2304800 replacement ensures your system maintains compliance with HVAC safety controls and prevents catastrophic heat exchanger failure. For technicians servicing commercial gas boilers, verified OEM Laars parts like the E2304800 provide the exact fit and electrical specifications required for high-limit temperature regulation without the need for field calibration.
Key Benefits for Contractors
- Precise Thermal Protection: Engineered to monitor the high limit temperature of the heating medium, triggering an immediate shutdown to prevent system overheating.
- Manual Reset Security: The M/R limit switch design requires a physical technician intervention after a trip, ensuring the underlying cause of the overheat is diagnosed before the system resumes operation.
- Direct OEM Compatibility: Specifically designed for the Laars MightyTherm2 (Sizes 200-400) and Pennant PNCH models, ensuring seamless integration with existing control panels and bulb wells.
- Robust Field Reliability: Utilizes a dependable remote bulb sensor and X-10 connectivity protocols for consistent performance in high-demand commercial environments.
Common Technical Questions
Where is the Laars E2304800 limit switch reset button located?In most MightyTherm2 applications, the switch is mounted behind the front access door on a panel positioned in front of the blower. To reset, the technician must unscrew the protective cap to access the manual reset button.
What causes a high limit switch to trip on a Laars boiler?Typical failure modes include restricted airflow through the heat exchanger, a malfunctioning blower motor, scaled internal piping, or a faulty aquastat sensor. If the switch trips frequently, verify the pump flow rate and check for sediment buildup in the header.
Can this switch be used in both hydronic boilers and water heaters?Yes, the E2304800 is compatible with both standard gas boilers and volume water heaters within the Laars Pennant and MightyTherm product lines, though the high-limit setpoint may vary depending on the specific appliance configuration.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $104.06
-65%$104.06
$36.42Laars Heating Systems E2304800 Limit Switch
The Laars Heating Systems E2304800 Limit Switch is a mission-critical safety component engineered for high-temperature protection in hydronic boiler and water heater applications. As a manual reset high limit switch, this device is designed to interrupt the burner circuit when internal temperatures exceed safe operating parameters, specifically calibrated for Laars MightyTherm2 and Pennant series models. For standard boiler configurations, the E2304800 typically operates with a factory setpoint of 240°F, while volume water heater variants may utilize a 200°F threshold. This SPDT limit switch employs a remote bulb-type sensor, often installed in the outlet side of the header to monitor the primary heating medium. Integrating a Laars E2304800 replacement ensures your system maintains compliance with HVAC safety controls and prevents catastrophic heat exchanger failure. For technicians servicing commercial gas boilers, verified OEM Laars parts like the E2304800 provide the exact fit and electrical specifications required for high-limit temperature regulation without the need for field calibration.
Key Benefits for Contractors
- Precise Thermal Protection: Engineered to monitor the high limit temperature of the heating medium, triggering an immediate shutdown to prevent system overheating.
- Manual Reset Security: The M/R limit switch design requires a physical technician intervention after a trip, ensuring the underlying cause of the overheat is diagnosed before the system resumes operation.
- Direct OEM Compatibility: Specifically designed for the Laars MightyTherm2 (Sizes 200-400) and Pennant PNCH models, ensuring seamless integration with existing control panels and bulb wells.
- Robust Field Reliability: Utilizes a dependable remote bulb sensor and X-10 connectivity protocols for consistent performance in high-demand commercial environments.
Common Technical Questions
Where is the Laars E2304800 limit switch reset button located?In most MightyTherm2 applications, the switch is mounted behind the front access door on a panel positioned in front of the blower. To reset, the technician must unscrew the protective cap to access the manual reset button.
What causes a high limit switch to trip on a Laars boiler?Typical failure modes include restricted airflow through the heat exchanger, a malfunctioning blower motor, scaled internal piping, or a faulty aquastat sensor. If the switch trips frequently, verify the pump flow rate and check for sediment buildup in the header.
Can this switch be used in both hydronic boilers and water heaters?Yes, the E2304800 is compatible with both standard gas boilers and volume water heaters within the Laars Pennant and MightyTherm product lines, though the high-limit setpoint may vary depending on the specific appliance configuration.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Laars Heating Systems E2304800 Limit Switch is a mission-critical safety component engineered for high-temperature protection in hydronic boiler and water heater applications. As a manual reset high limit switch, this device is designed to interrupt the burner circuit when internal temperatures exceed safe operating parameters, specifically calibrated for Laars MightyTherm2 and Pennant series models. For standard boiler configurations, the E2304800 typically operates with a factory setpoint of 240°F, while volume water heater variants may utilize a 200°F threshold. This SPDT limit switch employs a remote bulb-type sensor, often installed in the outlet side of the header to monitor the primary heating medium. Integrating a Laars E2304800 replacement ensures your system maintains compliance with HVAC safety controls and prevents catastrophic heat exchanger failure. For technicians servicing commercial gas boilers, verified OEM Laars parts like the E2304800 provide the exact fit and electrical specifications required for high-limit temperature regulation without the need for field calibration.
Key Benefits for Contractors
- Precise Thermal Protection: Engineered to monitor the high limit temperature of the heating medium, triggering an immediate shutdown to prevent system overheating.
- Manual Reset Security: The M/R limit switch design requires a physical technician intervention after a trip, ensuring the underlying cause of the overheat is diagnosed before the system resumes operation.
- Direct OEM Compatibility: Specifically designed for the Laars MightyTherm2 (Sizes 200-400) and Pennant PNCH models, ensuring seamless integration with existing control panels and bulb wells.
- Robust Field Reliability: Utilizes a dependable remote bulb sensor and X-10 connectivity protocols for consistent performance in high-demand commercial environments.
Common Technical Questions
Where is the Laars E2304800 limit switch reset button located?In most MightyTherm2 applications, the switch is mounted behind the front access door on a panel positioned in front of the blower. To reset, the technician must unscrew the protective cap to access the manual reset button.
What causes a high limit switch to trip on a Laars boiler?Typical failure modes include restricted airflow through the heat exchanger, a malfunctioning blower motor, scaled internal piping, or a faulty aquastat sensor. If the switch trips frequently, verify the pump flow rate and check for sediment buildup in the header.
Can this switch be used in both hydronic boilers and water heaters?Yes, the E2304800 is compatible with both standard gas boilers and volume water heaters within the Laars Pennant and MightyTherm product lines, though the high-limit setpoint may vary depending on the specific appliance configuration.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












