Honeywell Home Programmable Aquatrol Zoning Panel for 4 Zone, 2-Wire Valves w/o End Switches

Honeywell AQ257 expansion zoning panels work with AQ2000 boiler control panels and AQ1000 communication thermostats to control up to four space heating zones. Combine with extra expansion panels and AQ2000 panel for 16 space heating zones. Features For zoning with zone valves without end switches Includes auto test function to test zones at system start up LED lights for visual diagnostic of zone operation Adjacent zoning panels can operate different zone equipment Easily switch from zone valves to pumps with same zoning module R-C transformer and B-B data bus terminal connections for easy expansion Zones can be set to energize a group pump via Aux Out dry contacts on main control panel or expansion control panel Zone synchronization through Zone of Greatest Demand control Specifications: Application: Zoning control for hydronic zoning system Dimensions (in.) : 9-1/2" wide x 8" high x 3-3/8" deep Weight (lb): 3.9 lbs Approvals: Canadian Standards Association, CSA C/US Certified to CSA and UL Standards, Fil...