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Code Compliance: Meets UL 1820 and ASTM D635
Simplified Scaling: Allows for the addition of up to nine modules per communication link to meet complex site requirements
the 4501 series typically features a removable ring
System Longevity: Safeguards expensive downstream components like blower motors and heat exchangers from moisture damage
Resideo HPZC105 Controller 322838-753 Code Compliance: Meets UL 1820The Resideo HPZC105 Five Zone Valve Controller is an industry standard hydronic zoning panel designed for precise multi zone hydronic heating management. As a direct Honeywell HPZC105 replacement, this 120V hydronic control manages up to five independent zones using 24V zone valves and a central boiler. Its specialized Priority Zone Control ensures that critical domestic hot water (DHW) calls are met before standard heating loops, optimizing recovery
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