Resideo L4029E1029 Control
The Resideo L4029E1029 provides critical high-limit protection for ductwork and warm air systems. This manual reset limit control is engineered with a normally closed SPST switch that breaks the circuit upon temperature rise, specifically calibrated with a fixed 200°F high limit stop. This 120V/240V compatible control serves as a dedicated fire thermostat, detecting excessive heat in HVAC ducts and immediately shutting down the fan to prevent the spread of combustion. Designed for reliability in professional applications, the 3-inch element insertion length ensures the bimetal strip is positioned directly in the air stream for rapid thermal response. Because this is a safety lockout device, the internal snap-acting switch requires a manual intervention to restore power after a trip, ensuring an HVAC technician can investigate the cause of the high-heat event. Its compact metal housing and simple two-screw mounting make it a standard choice for contractors managing secondary limit safety in counterflow furnaces or large ventilating systems.
Key Benefits- Fail-Safe Protection: Functions as a high-authority fire stat to shut down air circulation when temperatures reach critical levels.
- Contractor-Grade Durability: Features an internal snap-acting switch and a rigid 3-inch sensing element for accurate bimetal actuation.
- System Compatibility: Universal SPST configuration handles line voltage (up to 240V) and low voltage applications.
- Manual Override: Ensures the system remains locked out after a high-limit trip until a physical reset is performed, prioritized for safety.
What is the purpose of the manual reset on the L4029E1029?
The manual reset ensures that if the 200°F limit is reached, the system will not automatically restart. This forces a physical inspection of the equipment, which is a standard safety requirement for fire and limit controls.
Can this be used as a primary fan cycles switch?
No, the L4029E1029 is strictly a high-limit safety control. It is designed to break the circuit in an emergency and should not be used for frequent cycling or as a primary fan operating control.
Does the 3-inch insertion length work in standard plenums?
Yes, the 3" element is the industry standard for ensuring the bimetal strip is deep enough in the air stream to get an accurate reading without obstructing compact duct configurations.
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: $189.43
-65%$189.43
$66.30Resideo L4029E1029 Control
The Resideo L4029E1029 provides critical high-limit protection for ductwork and warm air systems. This manual reset limit control is engineered with a normally closed SPST switch that breaks the circuit upon temperature rise, specifically calibrated with a fixed 200°F high limit stop. This 120V/240V compatible control serves as a dedicated fire thermostat, detecting excessive heat in HVAC ducts and immediately shutting down the fan to prevent the spread of combustion. Designed for reliability in professional applications, the 3-inch element insertion length ensures the bimetal strip is positioned directly in the air stream for rapid thermal response. Because this is a safety lockout device, the internal snap-acting switch requires a manual intervention to restore power after a trip, ensuring an HVAC technician can investigate the cause of the high-heat event. Its compact metal housing and simple two-screw mounting make it a standard choice for contractors managing secondary limit safety in counterflow furnaces or large ventilating systems.
Key Benefits- Fail-Safe Protection: Functions as a high-authority fire stat to shut down air circulation when temperatures reach critical levels.
- Contractor-Grade Durability: Features an internal snap-acting switch and a rigid 3-inch sensing element for accurate bimetal actuation.
- System Compatibility: Universal SPST configuration handles line voltage (up to 240V) and low voltage applications.
- Manual Override: Ensures the system remains locked out after a high-limit trip until a physical reset is performed, prioritized for safety.
What is the purpose of the manual reset on the L4029E1029?
The manual reset ensures that if the 200°F limit is reached, the system will not automatically restart. This forces a physical inspection of the equipment, which is a standard safety requirement for fire and limit controls.
Can this be used as a primary fan cycles switch?
No, the L4029E1029 is strictly a high-limit safety control. It is designed to break the circuit in an emergency and should not be used for frequent cycling or as a primary fan operating control.
Does the 3-inch insertion length work in standard plenums?
Yes, the 3" element is the industry standard for ensuring the bimetal strip is deep enough in the air stream to get an accurate reading without obstructing compact duct configurations.
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 Resideo L4029E1029 provides critical high-limit protection for ductwork and warm air systems. This manual reset limit control is engineered with a normally closed SPST switch that breaks the circuit upon temperature rise, specifically calibrated with a fixed 200°F high limit stop. This 120V/240V compatible control serves as a dedicated fire thermostat, detecting excessive heat in HVAC ducts and immediately shutting down the fan to prevent the spread of combustion. Designed for reliability in professional applications, the 3-inch element insertion length ensures the bimetal strip is positioned directly in the air stream for rapid thermal response. Because this is a safety lockout device, the internal snap-acting switch requires a manual intervention to restore power after a trip, ensuring an HVAC technician can investigate the cause of the high-heat event. Its compact metal housing and simple two-screw mounting make it a standard choice for contractors managing secondary limit safety in counterflow furnaces or large ventilating systems.
Key Benefits- Fail-Safe Protection: Functions as a high-authority fire stat to shut down air circulation when temperatures reach critical levels.
- Contractor-Grade Durability: Features an internal snap-acting switch and a rigid 3-inch sensing element for accurate bimetal actuation.
- System Compatibility: Universal SPST configuration handles line voltage (up to 240V) and low voltage applications.
- Manual Override: Ensures the system remains locked out after a high-limit trip until a physical reset is performed, prioritized for safety.
What is the purpose of the manual reset on the L4029E1029?
The manual reset ensures that if the 200°F limit is reached, the system will not automatically restart. This forces a physical inspection of the equipment, which is a standard safety requirement for fire and limit controls.
Can this be used as a primary fan cycles switch?
No, the L4029E1029 is strictly a high-limit safety control. It is designed to break the circuit in an emergency and should not be used for frequent cycling or as a primary fan operating control.
Does the 3-inch insertion length work in standard plenums?
Yes, the 3" element is the industry standard for ensuring the bimetal strip is deep enough in the air stream to get an accurate reading without obstructing compact duct configurations.
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.
