{"product_id":"resideo-aq25742b-u-programmable-aquatrol-zoning-panel-for-4-zone-2-wire-valves-w-o-end-switches","title":"Resideo AQ25742B\/U Programmable Aquatrol Zoning Panel for 4 Zone, 2-Wire Valves w\/o End Switches","description":"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.\u003cbr\u003e\u003cbr\u003e\r\n\r\n\u003cb\u003eFeatures\u003c\/b\u003e\u003cbr\u003e\r\n\r\n\u003cul\u003e\r\n\u003cli\u003eFor zoning with zone valves without end switches\r\n\u003c\/li\u003e\n\u003cli\u003eIncludes auto test function to test zones at system start up\r\n\u003c\/li\u003e\n\u003cli\u003eLED lights for visual diagnostic of zone operation\r\n\u003c\/li\u003e\n\u003cli\u003eAdjacent zoning panels can operate different zone equipment\r\n\u003c\/li\u003e\n\u003cli\u003eEasily switch from zone valves to pumps with same zoning module\r\n\u003c\/li\u003e\n\u003cli\u003eR-C transformer and B-B data bus terminal connections for easy expansion\r\n\u003c\/li\u003e\n\u003cli\u003eZones can be set to energize a group pump via Aux Out dry contacts on main control panel or expansion control panel\r\n\u003c\/li\u003e\n\u003cli\u003eZone synchronization through Zone of Greatest Demand control\r\n\u003c\/li\u003e\n\u003c\/ul\u003e\r\n\r\n\u003cb\u003eSpecifications:\u003c\/b\u003e\u003cbr\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eApplication: Zoning control for hydronic zoning system\r\n\u003c\/li\u003e\n\u003cli\u003eDimensions (in.) :  9-1\/2\" wide x 8\" high x 3-3\/8\" deep\r\n\u003c\/li\u003e\n\u003cli\u003eWeight (lb):  3.9 lbs\r\n\u003c\/li\u003e\n\u003cli\u003eApprovals:  Canadian Standards Association,  CSA C\/US Certified to CSA and UL Standards, File No. LR76030\r\n\u003c\/li\u003e\n\u003cli\u003eThermostat Compatibility:  AQ1000 Series 2-wire communicating thermostats and most digital thermostats\r\n\u003c\/li\u003e\n\u003cli\u003eZoning Devices Controlled: 2-wire valve (24 Vac)\r\n\u003c\/li\u003e\n\u003cli\u003eR-C Input (on Control and Zoning Modules): 24 Vac Class II (input on Control and Zoning Modules)\r\n\u003c\/li\u003e\n\u003cli\u003eB-B Communication Bus Terminals: Low voltage, Class II, 2-wire polarity-insensitive, digital communicating link to other Control or Zoning modules.\r\n\u003c\/li\u003e\n\u003cli\u003eZone Module Thermostat Input: Low voltage, Class II, 2-wire polarity-insensitive, digital communicating with power link to AQ1000 series thermostat\r\n\u003c\/li\u003e\n\u003cli\u003eZone Output Contact Rating: 120 Vac\/250 Vac, 0.5A, 12VA\r\n\u003c\/li\u003e\n\u003cli\u003eElectrical Connections: Wire-clamp screw terminals, Maximum 2 x 14 AWG each on line voltage terminals\r\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Resideo","offers":[{"title":"Default Title","offer_id":53777466654944,"sku":"AQ25742B\/U","price":436.64,"currency_code":"USD","in_stock":true}],"url":"https:\/\/thefirealarmsupplier.com\/products\/resideo-aq25742b-u-programmable-aquatrol-zoning-panel-for-4-zone-2-wire-valves-w-o-end-switches","provider":"The Fire Alarm Supplier","version":"1.0","type":"link"}