Carrier HK42FZ020 Control Board 320819-301 This is a factory drain

This is a factory drain hole required by ASME code

it ensures high static pressure performance and consistent airflow across the coil

Since the flux is non-corrosive

The Trane VAL7360 is a precision-engineered thermostatic expansion valve (TXV) engineered specifically for 2-ton high-efficiency HVAC systems

Durable Construction: Forged brass body with NBR seals ensures chemical compatibility with LP gas

Carrier HK42FZ020 Control Board 320819-301 This is a factory drainThe Carrier HK42FZ020 Control Board is a critical OEM replacement part designed for two stage gas furnace systems. This furnace circuit board serves as the central logic unit, managing the complex sequence of operations for high efficiency heating cycles. Engineered for Carrier, Bryant, and Payne equipment, it replaces previous iterations like the HK42FZ019, providing reliable control over the inducer motor, hot surface igniter, and blower motor