Lennox 12U98 Relay
The Lennox 12U98 Relay is a professional-grade 24Vac electronic time delay relay engineered specifically for critical timing sequences in residential and commercial HVACR systems. This genuine OEM replacement part (also identified as 103047-02) provides an essential 30-minute delay-on-break (DOB) function. This fixed interval ensures that the system components continue to operate for a set period after the control signal is removed, which is vital for preventing compressor short-cycling and managing post-run fan timing to maximize heat transfer efficiency. Designed for 50/60Hz frequency applications, this low voltage control relay features a compact form factor that integrates seamlessly into existing control boards or electrical enclosures. As a veteran-preferred component for Lennox systems, it maintains precise operational logic to protect high-cost motors and compressors from electrical stress during power interruptions. Its rugged construction and UL-listed design make it a reliable choice for field technicians prioritizing long-term system stability and performance over generic alternatives.
Key Benefits for Technicians- Optimized System Protection: The 30-minute delay-on-break prevents rapid cycling, extending the lifespan of compressors and contactors.
- True OEM Compatibility: Specifically designed to replace Lennox 103047-02, ensuring electrical specifications and mounting footprints match exactly.
- Efficient Energy Management: Facilitates post-run fan operation to capture residual cooling or heating, improving overall SEER/EER ratings.
- Universal Frequency Support: Operates reliably on both 50Hz and 60Hz 24V control circuits, making it versatile for various regional grids.
- Durable Electronic Design: Built to withstand the high-temperature environments common in HVAC electrical compartments.
What is the primary function of the delay-on-break on this relay?
The Lennox 12U98 keeps the load energized for 30 minutes after the thermostat or control signal breaks, which is typically used for fan overrun or ensuring the system doesn't restart too quickly during high-demand periods.
Can this relay be used on non-Lennox equipment?
While designed for Lennox and Allied Air units, its 24Vac operating voltage and standard 30-min DOB logic allow it to function in any application requiring a 0.5-hour delay on break, provided the amperage ratings are not exceeded.
How do I verify if my current relay is faulty?
Technicians should check for 24V at the input. If the output remains open or closed immediately without the 30-minute lag after the signal is pulled, the internal timing circuit of the electronic relay has likely failed.
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: $98.92
-65%$98.92
$34.62Lennox 12U98 Relay
The Lennox 12U98 Relay is a professional-grade 24Vac electronic time delay relay engineered specifically for critical timing sequences in residential and commercial HVACR systems. This genuine OEM replacement part (also identified as 103047-02) provides an essential 30-minute delay-on-break (DOB) function. This fixed interval ensures that the system components continue to operate for a set period after the control signal is removed, which is vital for preventing compressor short-cycling and managing post-run fan timing to maximize heat transfer efficiency. Designed for 50/60Hz frequency applications, this low voltage control relay features a compact form factor that integrates seamlessly into existing control boards or electrical enclosures. As a veteran-preferred component for Lennox systems, it maintains precise operational logic to protect high-cost motors and compressors from electrical stress during power interruptions. Its rugged construction and UL-listed design make it a reliable choice for field technicians prioritizing long-term system stability and performance over generic alternatives.
Key Benefits for Technicians- Optimized System Protection: The 30-minute delay-on-break prevents rapid cycling, extending the lifespan of compressors and contactors.
- True OEM Compatibility: Specifically designed to replace Lennox 103047-02, ensuring electrical specifications and mounting footprints match exactly.
- Efficient Energy Management: Facilitates post-run fan operation to capture residual cooling or heating, improving overall SEER/EER ratings.
- Universal Frequency Support: Operates reliably on both 50Hz and 60Hz 24V control circuits, making it versatile for various regional grids.
- Durable Electronic Design: Built to withstand the high-temperature environments common in HVAC electrical compartments.
What is the primary function of the delay-on-break on this relay?
The Lennox 12U98 keeps the load energized for 30 minutes after the thermostat or control signal breaks, which is typically used for fan overrun or ensuring the system doesn't restart too quickly during high-demand periods.
Can this relay be used on non-Lennox equipment?
While designed for Lennox and Allied Air units, its 24Vac operating voltage and standard 30-min DOB logic allow it to function in any application requiring a 0.5-hour delay on break, provided the amperage ratings are not exceeded.
How do I verify if my current relay is faulty?
Technicians should check for 24V at the input. If the output remains open or closed immediately without the 30-minute lag after the signal is pulled, the internal timing circuit of the electronic relay has likely failed.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Lennox 12U98 Relay is a professional-grade 24Vac electronic time delay relay engineered specifically for critical timing sequences in residential and commercial HVACR systems. This genuine OEM replacement part (also identified as 103047-02) provides an essential 30-minute delay-on-break (DOB) function. This fixed interval ensures that the system components continue to operate for a set period after the control signal is removed, which is vital for preventing compressor short-cycling and managing post-run fan timing to maximize heat transfer efficiency. Designed for 50/60Hz frequency applications, this low voltage control relay features a compact form factor that integrates seamlessly into existing control boards or electrical enclosures. As a veteran-preferred component for Lennox systems, it maintains precise operational logic to protect high-cost motors and compressors from electrical stress during power interruptions. Its rugged construction and UL-listed design make it a reliable choice for field technicians prioritizing long-term system stability and performance over generic alternatives.
Key Benefits for Technicians- Optimized System Protection: The 30-minute delay-on-break prevents rapid cycling, extending the lifespan of compressors and contactors.
- True OEM Compatibility: Specifically designed to replace Lennox 103047-02, ensuring electrical specifications and mounting footprints match exactly.
- Efficient Energy Management: Facilitates post-run fan operation to capture residual cooling or heating, improving overall SEER/EER ratings.
- Universal Frequency Support: Operates reliably on both 50Hz and 60Hz 24V control circuits, making it versatile for various regional grids.
- Durable Electronic Design: Built to withstand the high-temperature environments common in HVAC electrical compartments.
What is the primary function of the delay-on-break on this relay?
The Lennox 12U98 keeps the load energized for 30 minutes after the thermostat or control signal breaks, which is typically used for fan overrun or ensuring the system doesn't restart too quickly during high-demand periods.
Can this relay be used on non-Lennox equipment?
While designed for Lennox and Allied Air units, its 24Vac operating voltage and standard 30-min DOB logic allow it to function in any application requiring a 0.5-hour delay on break, provided the amperage ratings are not exceeded.
How do I verify if my current relay is faulty?
Technicians should check for 24V at the input. If the output remains open or closed immediately without the 30-minute lag after the signal is pulled, the internal timing circuit of the electronic relay has likely failed.
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.
