
Lochinvar & A.O. Smith 100208472 Kit
The Lochinvar & A.O. Smith 100208472 Kit is a critical integrated control kit engineered for high-performance commercial boilers and water heaters. As a direct replacement for the legacy RLY20059 and 100167576 components, this central control board (CCB) manages all essential combustion and safety sequences from a single platform. Designed specifically for units with serial numbers beginning with 4015, including Lochinvar FB 2500, FBN2500, and FBL2 models, it streamlines field service by integrating ignition lead control, flame sensing, and precise temperature regulation. This OEM HVAC control board ensures proper pre-purge cycles, blower speed modulation via PWM signaling, and rigorous monitoring of safety limits and gas valve timing. For technicians, installing this 100208472 replacement kit minimizes complex troubleshooting by centralizing logic onto one durable PCB, effectively restoring the communication between sensor inputs and mechanical outputs required for stable boiler management and energy efficiency in demanding hydronic heating applications.
Key Benefits- Universal System Management: Consolidates ignition, safety limits, and temperature monitoring onto a single integrated control board.
- Direct OEM Compatibility: Engineered as the exact replacement for RLY20059 to maintain factory specifications and component alignment.
- Advanced Hardware Integration: Supports precise PWM fan control and high-voltage relay switching for consistent boiler performance.
- Simplified Field Service: Reduces wiring complexity and diagnostic time by eliminating multiple discrete relay modules in the control cabinet.
Is the 100208472 compatible with older Lochinvar FB models?
This kit is validated for specific models starting with serial number 4015. Always verify your unit's serial number and technical documentation to ensure the correct firmware version and physical pin-out match.
What was the previous part number for this integrated control?
The 100208472 is the current manufacturer-designated replacement for parts RLY20059 and 100167576.
Does this board require specialized tools for calibration?
While the board manages automated sequences, technicians should use a digital manometer to verify manifold gas pressure and air pressure switch setpoints during the post-installation startup phase.
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: $1,199.48
-65%$1,199.48
$419.82Lochinvar & A.O. Smith 100208472 Kit
The Lochinvar & A.O. Smith 100208472 Kit is a critical integrated control kit engineered for high-performance commercial boilers and water heaters. As a direct replacement for the legacy RLY20059 and 100167576 components, this central control board (CCB) manages all essential combustion and safety sequences from a single platform. Designed specifically for units with serial numbers beginning with 4015, including Lochinvar FB 2500, FBN2500, and FBL2 models, it streamlines field service by integrating ignition lead control, flame sensing, and precise temperature regulation. This OEM HVAC control board ensures proper pre-purge cycles, blower speed modulation via PWM signaling, and rigorous monitoring of safety limits and gas valve timing. For technicians, installing this 100208472 replacement kit minimizes complex troubleshooting by centralizing logic onto one durable PCB, effectively restoring the communication between sensor inputs and mechanical outputs required for stable boiler management and energy efficiency in demanding hydronic heating applications.
Key Benefits- Universal System Management: Consolidates ignition, safety limits, and temperature monitoring onto a single integrated control board.
- Direct OEM Compatibility: Engineered as the exact replacement for RLY20059 to maintain factory specifications and component alignment.
- Advanced Hardware Integration: Supports precise PWM fan control and high-voltage relay switching for consistent boiler performance.
- Simplified Field Service: Reduces wiring complexity and diagnostic time by eliminating multiple discrete relay modules in the control cabinet.
Is the 100208472 compatible with older Lochinvar FB models?
This kit is validated for specific models starting with serial number 4015. Always verify your unit's serial number and technical documentation to ensure the correct firmware version and physical pin-out match.
What was the previous part number for this integrated control?
The 100208472 is the current manufacturer-designated replacement for parts RLY20059 and 100167576.
Does this board require specialized tools for calibration?
While the board manages automated sequences, technicians should use a digital manometer to verify manifold gas pressure and air pressure switch setpoints during the post-installation startup phase.
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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Product Information
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Shipping & Returns
Description
The Lochinvar & A.O. Smith 100208472 Kit is a critical integrated control kit engineered for high-performance commercial boilers and water heaters. As a direct replacement for the legacy RLY20059 and 100167576 components, this central control board (CCB) manages all essential combustion and safety sequences from a single platform. Designed specifically for units with serial numbers beginning with 4015, including Lochinvar FB 2500, FBN2500, and FBL2 models, it streamlines field service by integrating ignition lead control, flame sensing, and precise temperature regulation. This OEM HVAC control board ensures proper pre-purge cycles, blower speed modulation via PWM signaling, and rigorous monitoring of safety limits and gas valve timing. For technicians, installing this 100208472 replacement kit minimizes complex troubleshooting by centralizing logic onto one durable PCB, effectively restoring the communication between sensor inputs and mechanical outputs required for stable boiler management and energy efficiency in demanding hydronic heating applications.
Key Benefits- Universal System Management: Consolidates ignition, safety limits, and temperature monitoring onto a single integrated control board.
- Direct OEM Compatibility: Engineered as the exact replacement for RLY20059 to maintain factory specifications and component alignment.
- Advanced Hardware Integration: Supports precise PWM fan control and high-voltage relay switching for consistent boiler performance.
- Simplified Field Service: Reduces wiring complexity and diagnostic time by eliminating multiple discrete relay modules in the control cabinet.
Is the 100208472 compatible with older Lochinvar FB models?
This kit is validated for specific models starting with serial number 4015. Always verify your unit's serial number and technical documentation to ensure the correct firmware version and physical pin-out match.
What was the previous part number for this integrated control?
The 100208472 is the current manufacturer-designated replacement for parts RLY20059 and 100167576.
Does this board require specialized tools for calibration?
While the board manages automated sequences, technicians should use a digital manometer to verify manifold gas pressure and air pressure switch setpoints during the post-installation startup phase.
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.












