IO Hvac Controls ZP2-HC-ESP-KIT Control Kit Els PW 17895 Why is my boiler tripping

Why is my boiler tripping the high limit switch

utilizing the conductivity of the fluid to complete the secondary circuit without mechanical floats

When replacing older pneumatic valve linkages

ensure the VAL10179 is threaded directly onto the gas manifold

Does this coil include the valve body

IO Hvac Controls ZP2-HC-ESP-KIT Control Kit Els PW 17895 Why is my boiler trippingThe iO HVAC Controls ZP2 HC ESP KIT is a 2 zone single stage zone control panel kit engineered for residential and light commercial forced air systems. This HVAC zoning system features integrated ESP static pressure control, which electronically monitors system static in real time. By modulating closed dampers to a partially open position when pressure exceeds the setpoint, the ZP2 HC ESP removes the need for a traditional bypass damper. This design