Lochinvar & A.O. Smith 100208498 Connection Board

The Lochinvar & A.O. Smith 100208498 Low Voltage Connection Board is a high-performance OEM replacement part engineered for precise system communication and control. Designed for high-efficiency hydronic systems, this board functions as the primary interface for low voltage controls, facilitating the distribution of electrical signals between the thermostat, sensors, and the main firing control. This specific 100208498 connection board is the designated replacement for obsolete models RLY2114 and RLY2114K, ensuring continued operation for older installations without requiring complex field modifications. As a critical boiler control component, it is used extensively in Lochinvar Power-Fin series boilers (models PB502 through PB1302) and PF series hot water supply boilers. Verified HVAC circuit board replacement via genuine OEM parts maintains the intended low-voltage signal integrity, preventing communication errors that lead to intermittent lockouts or short-cycling in commercial and residential heating systems.

• Precision Signal Routing: Ensures seamless low voltage communication between system sensors and the ignition control module.
• Direct Drop-In Replacement: Specifically engineered to replace Lochinvar RLY2114 and RLY2114K without rewiring.
• Broad Compatibility: Fully compatible with Lochinvar Power-Fin PB502-1302 and PF502-1302 heating and hot water supply units.
• Signal Integrity: High-quality trace construction protects against signal noise and voltage fluctuations in the HVAC control circuit.

Is the 100208498 compatible with older Power-Fin models?
Yes, this connection board is the standard service replacement for Power-Fin models ranging from 502,000 to 1,302,000 BTU/hr, specifically replacing the RLY2114 series boards.

What are the symptoms of a failing low voltage connection board?
Technicians typically observe "No Heat" calls where the thermostat is calling, but the boiler fails to initiate the ignition sequence, often due to a failure in the low voltage signal distribution.

Can I use this board for both heating and hot water supply boilers?
Yes, this 100208498 PCB is utilized across both the PB (Heating) and PF (Hot Water Supply) series within its specified size range.

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.