Caleffi ZVR104 Relay 321894-706 standardized interface that simplifies complex

standardized interface that simplifies complex wiring configurations

For contractors servicing Quincy QR-325

this kit is specifically sized for 1/2" and 3/4" in the 223 series

It features non-linting characteristics

Caleffi ZVR104 Relay 321894-706 standardized interface that simplifies complexThe 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