providing a seamless fit and high operational reliability

Reduced Leak Risk: The continuous 50ft length eliminates unnecessary joints in long-distance pilot line runs

Using a higher-rated link can lead to component failure or hazardous temperatures within the air handler

Prevents Refrigerant Migration: Keeps the crankcase warm to ensure refrigerant stays in the condenser and evaporator

Adjustable heating and cooling limits protect equipment from extreme setpoint demands

Resideo HPZC104 Controller 321894-708 providing a seamless fit andThe Resideo HPZC104 is a professional grade four zone valve controller designed to streamline hydronic zoning for residential and light commercial boiler systems. Engineered with a familiar board layout that eliminates the learning curve for experienced techs, this hydronic zone panel simplifies the wiring of up to four 24V zone valves. It features a robust 40VA transformer and independent C terminals for every thermostat connection, ensuring full