Description The ZP4-ESP is a 4 zone panel that integrates our award winning ESP technology to completely eliminate the need to install a bypass damper. This 3H/2C zone panel comes with a static pressure sensor. The system works like any standard zone control system with one exception; a static pressure sensor continuously monitors the system static pressure. If the static pressure goes above setpoint, the ESP panel will power the selected non-calling zone dampers open just enough to relieve the excess pressure. Tests indicate that bleeding a small amount of conditioned air for a short time into non-calling zones has little to no impact on the zone temperature. The panel can be used with single-stage, multi-stage, heat pump or dual fuel equipment. A wide range of control options provide ultimate application flexibility including adjustable high/low limits, adjustable high/low balance point, and 2 zone, 2nd stage capacity control. Features: 4 zone universal panel with ESP capability Smallest universal panel offered by iO Up to 2H/2C conventional or 3H/2C heat pump and dual fuel Auto changeover First call priority with time share 2 zone, 2nd stage capacity control Purge cycle option Adjustable high and low limits Adjustable high and low balance points Easy switch configuration Fused protected inputs and outputs
