AQ250 SERIES HYDRONIC CONTROL PANELS68-0306—05 2ORDERING INFORMATIONWhen purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to theTRADELINE® Catalog or price sheets for complete ordering number.If you have additional questions, need further information, or would like to comment on our products or services, please write orphone:1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).2. Honeywell Customer Care1885 Douglas Drive NorthMinneapolis, Minnesota 55422-4386In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Toronto, Ontario M1V 4Z9.International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.• When using non-communicating thermostats, thefollowing features are not available:• Outdoor temperature is not displayed on thethermostat.• Individual zone freeze protection.SPECIFICATIONSThe AQ250 Control Panels and corresponding attachedequipment are listed in Table 1.Table 1. AQ250 Series Control Panel Models.Application: Controls one boiler loop as well as domestic hotwater (DHW) management and zoning operation in ahydronic zoning system.Power and Electrical Ratings:Power Supply: 120 Vac / 60HzAuxiliary Pump Contact Rating: 120/250 Vac, 5A,1/3 HPBoiler (T-T) Contact Rating: 24 Vac, 0.5A, 12 VABoiler Pump Output Rating: 120 Vac, 5A, 1/3 HPDHW Pump/Valve Output Rating: 120 Vac, 5A, 1/3 HPB–B Communication Bus Terminals: Low voltage,Class II, 2-wire polarity-insensitive, digitalcommunicating link to other Control or Zoning modules.Electrical Connections (Line Voltage): Wire-clampscrew terminals; maximum 2 x 14 AWG each on linevoltage terminalsEnvironmental Ratings:Control and Zoning Panel Temperature Rating: 32°F to130°F (0°C to 55°C)Operating Humidity Range (% RH): 5 to 90% RH, non-condensingTemperature Ratings:Return Minimum Control Temperature: 140°F (60°C);This is the temperature at which the bypass pump(Aux. Pump contacts) is activated.Sensor Temperature Rating: -58°F to 230°F (-50°C to110°C)Inputs/Outputs:DHW Demand Input: External dry contacts connectiononlyHeat Demand (Thermostat R-W) Input: External drycontacts connection onlyR–C Input (on Control and Zoning Modules): 24 VacClass IIR–C Output (on transformer): 38 VA, 24 Vac Class IIInterface and Timings:User Interface: DIP Switch settingsBoiler Heat Post Purge: 30 seconds; not adjustablePump/Valve exercise: 30 seconds per 2 weeks of spaceheating inactivity; not adjustableThermostat Compatibility: Digital thermostats and/orAQ1000 Series 2-wire communicating thermostatsSupply/Return Loop Sensor: 10K ohm NTC thermistor at77°F (25°C) ± 0.5°F (±0.3°C). Lead length: 10 ft. (3.0 m);up to 500 ft. (150 m) using 18 AWG or larger wire,beta=3892.Dimensions (HxWxD): 8.0 x 13 x 3.3 in. (20.3 x 32.9 x8.5 cm) approximateWeight: 4.9 lb. (2.2 kg)Approvals: Canadian Standards Association: Certified, FileNo. LR76030Control PanelCorrespondingControl ModuleCorrespondingZoning ModuleAQ25042B AQ15000B AQ15540BAQ25044B AQ15000B AQ15740B