First Company CB103B Circuit Board R-410A The Hydrolevel 550P Low Water

The Hydrolevel 550P Low Water Cut-Off is a probe-type control engineered for residential and commercial hot water boilers

this dual-stage component features a 3/4 inch NPT inlet and outlet to handle high-capacity demands up to 300

This specific model comes equipped with 60-inch lead wires for flexible wiring in deep enclosures or extended junction box runs

Where should this sensor be mounted on the outdoor unit

the LF24-S is designed for on/off control

First Company CB103B Circuit Board R-410A The Hydrolevel 550P Low WaterThe First Company CB103B Circuit Board (Model 1102 1A) is a critical OEM replacement control board designed for high performance management of HVAC air handler operations. As a direct fit replacement for the original 1102 1A and CB103B series, this board regulates essential system sequences, including fan motor control, heating relay activation, and cooling cycle timing. Engineered for First Co fan coil units and multi family residential air handlers,