{"product_id":"resideo-aq25042b-u-aquatrol-boiler-control-panel-for-4-zones-or-2-wire-valves","title":"Resideo AQ25042B\/U Aquatrol Boiler Control Panel for 4 Zones or 2 Wire Valves","description":"The AQ250 family of AQUATROL Boiler Controls provides simplified, energy-efficient control of single temperature, residential hydronic heating systems. The AQ250 easily converts a single zone heating system into a room-by-room comfort control system, or upgrades a basic, relay-logic zoning system to intelligent Zone of Greatest Demand control for increased energy efficiency with reduced boiler cycling. AQ250 boiler controls can ensure ample supply of hot water for both space heating and priority generation of domestic hot water for bathing, dishes and laundry.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFeatures\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eControls up to 2 stages of heat from a single thermostat.\u003c\/li\u003e\n\u003cli\u003eUse with AQ1000 2-wire communicating thermostats, or most dry contact digital thermostats.\r\n\u003c\/li\u003e\n\u003cli\u003eZoning Control for up to 4 zones as shipped; can be expanded to a total of 16 zones with AQ255 or AQ257 expansion zoning panels and up to 64 zones when used with AQ254 Add-A-Temp panels.\r\n\u003c\/li\u003e\n\u003cli\u003eLine or low-voltage output for zoning equipment (pumps or valves).\r\n\u003c\/li\u003e\n\u003cli\u003eZone synchronization through Zone or Greatest Demand control.\r\n\u003c\/li\u003e\n\u003cli\u003eDomestic hot water priority and priority override protection.\r\n\u003c\/li\u003e\n\u003cli\u003eBoiler short cycling protection.\r\n\u003c\/li\u003e\n\u003cli\u003eBoiler post purge.\r\n\u003c\/li\u003e\n\u003cli\u003eFreeze protection.\r\n\u003c\/li\u003e\n\u003cli\u003ePump\/valve exercise.\r\n\u003c\/li\u003e\n\u003cli\u003eBoiler shock prevention from cold water returning to boiler.\r\n\u003c\/li\u003e\n\u003cli\u003eAutomated test feature for quick start-up and simplified troubleshooting.\r\n\u003c\/li\u003e\n\u003cli\u003eIntegral 38 VA transformer with self-resetting electronic fuse.\r\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Resideo","offers":[{"title":"Default Title","offer_id":53777466360032,"sku":"AQ25042B\/U","price":574.36,"currency_code":"USD","in_stock":true}],"url":"https:\/\/thefirealarmsupplier.com\/products\/resideo-aq25042b-u-aquatrol-boiler-control-panel-for-4-zones-or-2-wire-valves","provider":"The Fire Alarm Supplier","version":"1.0","type":"link"}