Aquatrol Zoning Panel

Zoning Expansion Panel; Input: 120V 50/60Hz, Output 24Vac, For 4 Zone Pumps Or 2-Wire Valves, For Advanced Hydronic Controls, For Use With Any Digital Thermostat, Expandable With Aq2000 Zoning Panels, Dimensions: H-3", W-8", L-12", Weight:4Lbs, Mfg Box, Made In China

The AQ255 and AQ257 family of AQUATROL Expansion Zoning panels work with AQ2000 Boiler Control Panels and AQ1000 Communicating Thermostats to control up to 4 space heating zones (or 8, for the AQ25582B Panel). Can be combined with additional expansion zoning panels and an AQ2000 control panel for a total of 16 space heating zones.AQ257 for zoning with zone valves with end switchesAuto test function to test zones at system start up. It allows for operator controlled testing of zones; includes pause/restart capability.LED lights for visual diagnostic of zone operation.Allows zoning with either "Normally Open" or "Normally Closed" zone valves.Adjacent zoning panels can operate different zone equipment - one panel may control 4 pumps while another may control 4 zone valves.Easily switch from zone valves to pumps with same zoning module - just flip one DIP switch. Ensure correct voltage is applied to all zone equipment on a panel (120 Vac for pumps, 24 Vac for valves)R-C transformer and B-B data bus terminal connections (network communication) for easy expansion.Zones can be set to energize a group pump via Aux Out dry contacts on main control panel (AQ250, AQ25A, AQ251, AQ252) or expansion control panel (AQ254).Zone synchronization through Zone of Greatest Demand control.38 VA Transformer with self resetting electronic fuse.