Honeywell AQ250 Series Product Data

Also see for AQ250 Series: Technical reference booklet Quick installation guide

Contents

Honeywell AQ250 Series Product Data Manual pdf 1 page image

PRODUCT DATA68-0306-05AQ250 Series Hydronic Control PanelsPRODUCT DESCRIPTIONThe AQ250 easily converts a single-zone heating system intoa room-by-room comfort control system, or upgrades a basic,relay-logic zoning system to intelligent Zone of GreatestDemand control. The boiler control of the AQ250 can ensureample supply of hot water for both space heating and prioritygeneration of domestic hot water for bathing, dishes andlaundry.FEATURESThe AQ250 Series Hydronic Control Panels have the followingfeatures:• Zoning Control for up to four, single-stage zones ortwo, two-stage zones as shipped; can be expanded toa total of 16 zones with AQ255 or AQ257 expansionzoning panels, and up to 64 zones by using up to threeAQ254 Add-a-Temperature expansion panels andadditional expansion zoning modules.• Controls one boiler loop.• Zone synchronization through Zone of GreatestDemand control.• Domestic hot water (DHW) priority and priorityoverride protection.• Use with digital non-communicating thermostats orAQ1000 2-wire polarity insensitive communicatingthermostats.• Automated test feature for quick start-up andsimplified troubleshooting.• Boiler freeze protection (in the event of networkcommunication failure).• Boiler short cycling protection, post purge, and shockprevention from cold water returning to boiler.• Line or low-voltage output for zoning equipment(pumps or valves).• Integral 38 VA transformer with self resettingelectronic fuse.IMPORTANTTo ensure correct installation and proper operation ofthe control, perform the 7 installation steps in theorder numbered in the “Contents” below.Need new photo of AQ250ContentsSpecifications ................................................................... 21 Installation Preparation .................................................. 32 Mounting ........................................................................ 43 Wiring Procedure ........................................................... 54 Configure the Control Panel DIP Switches .................... 145 Test and Check Out the Installation ............................... 176 Purge Air from all System and Zone Piping .................. 197 Document and Keep a record of all System Settings .... 19Troubleshooting ................................................................ 19