Caleffi ZVR104 Relay 321142-301 the 2392659 model features a

the 2392659 model features a robust substrate with high-grade conductive pathways to ensure low-latency communication between the system's electrical components

This single pole pressure control features a single-pole

minimizing repiping and downtime during field upgrades

making it a standard choice for R410A heat pump systems where bi-flow refrigerant capability is required

It features a bright red ABS impeller that provides high-visibility rotation

Caleffi ZVR104 Relay 321142-301 the 2392659 model features aThe Caleffi ZVR104 is a professional grade 4 zone valve relay designed for precise control of hydronic heating systems. Serving as a direct HPZC104 replacement, this multi zone controller manages up to four zone valves and features priority zoning functionality, allowing a single zone to be designated for domestic hot water (DHW) production. Engineered with a multi pin selectable priority option, the ZVR104 ensures that space heating loads are