Laars Heating Systems R0021300 Transformer 323080-701 or persistent pressure switch trip

or persistent pressure switch trip codes (often indicating a loss of vacuum) are primary indicators that the collector box requires replacement

reducing the overall transformer load in large-scale commercial deployments

making it suitable for most high-wattage commercial heating elements

Professional installation is recommended to ensure correct limit switch wiring and system safety

Laars Heating Systems R0021300 Transformer 323080-701 or persistent pressure switch tripThe Laars R0021300 Transformer is a critical electrical component designed for precision voltage step down in hydronic heating systems. This 40VA control transformer features a 120V primary to 24V secondary configuration, providing reliable power to integrated boiler control boards, gas valves, and safety circuits. Engineered specifically for Laars heating systems, this component ensures consistent secondary voltage stability, preventing localized