IO Hvac Controls ZP3-HPS-ESP Control Kit 320819-301 The dry contact relay design

The dry contact relay design ensures isolation between the control circuit and the 20 Amp load

This unit features high close-off pressure capabilities

Common Questions What is the maximum pressure rating for this valve in steam applications

By verifying vent pressure before allowing the ignition sequence

6-inch body diameter and a 1/2-inch x 2

IO Hvac Controls ZP3-HPS-ESP Control Kit 320819-301 The dry contact relay designThe iO HVAC Controls ZP3 HPS ESP Control Kit is a professional grade 3 zone heat pump zone control panel designed to streamline multi stage residential and light commercial HVAC zoning. By integrating Electronic Static Pressure (ESP) technology, this system allows contractors to eliminate the standard bypass damper entirely. The included ZPA SPS static pressure sensor continuously monitors system pressure; as dampers cycle, the panel modulates non