the replacement interior typically comes with the necessary seals to ensure a leak-proof seat within the existing valve housing

OEM Calibration: Precise

Fast Thermal Response: The included bulb strap and 800mm capillary tube ensure rapid heat transfer from the suction line to the sensing element for immediate reaction to load changes

this NSF certified thermometer provides the dual scale readings necessary for professional-grade reporting

If your existing board is labeled HH84AA011

Lochinvar & A.O. Smith 100208498 Connection Board Refrigerant the replacement interior typically comesThe 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