A.O. Smith 400, 402, 401, 403, 405, 404 Tennessee Waltz Parkway, Ashland City, TN Phone

Page 48

500 Tennessee Waltz Parkway, Ashland City, TN 37015

Phone: 800-433-2545

www.hotwater.com E-Mail: parts@hotwater.com

Image 48

Contents Installation Operation Maintenance Limited Warranty Copper Boilers for Hydronic Heating HOT Water SupplyDIMENSIONS/CAPACITIES Data Dimensional DataGAS and Electrical Requirement Dimensions Data for Outdoor Configuration Recovery Capacities ForewordFEATURES/CONTROLS Differential Pressure Switch Combustion AIR Blower Blocked Flue Pressure SwitchWater Flow Switch ON/OFF SwitchInstallation Instructions Safety Relief ValvesRequired Ability LocationInstallation Clearances Chemical Vapor CorrosionLevelling AIR RequirementsVenting Horizontal Vent Installation System Installation Installation AS Boiler ReplacementINTAKE/EXHAUST Installation Requirements GeneralStandard Vent Vertical Category Type B orEquivalent 16 40.6 cmStandard Vent Horizontal Category III StainlessSteel IIIDirect Vent Vertical Exhaust Configurations Direct Vent Vertical CategoryDirect Vent Horizontal Exhaust Configurations Direct Vent Horizontal CategoryStainless GAL. Steel Sealed Stainless GAL.STEELHydronic Installation Space Heating Applications Internal ContaminantsVAC System Controller Optional Tank Probe Installation Procedure GAS Connections Water Line ConnectionsHard Water Conditions Tank Probe OptionalSingle boiler with horizontal tank Single boiler with vertical tank Suggested Pipe Size For Multiple Gas Appliances Propane Gas Single Unit INSTALLATION, Suggested Pipe Size Wiring ConnectionsDistance from Meter BTU Input BTU/HRGAS Manifold Assembly Genesis GB/GW 1000-2500 Series 400 Wiring Diagram Page Genesis GB/GW 1000-2500 Series 400 Schematic Diagram Page CCB Central Control Board FCB Flame Control Board Diagram PDB Power Distribution Board Diagram Operation Filling and Purging Water SystemPurging of GAS Line Inlet GAS PressureFor Your Safety Read Before Operating For Your Safety Read Before Operating Adjustments Risk of Scalds TemperatureSetting Degree Burns on Adult Skin Control SystemAir Pressure Sensors open condition indicates fault Gas Pressure Sensors open condition indicates faultWater Level Sensor open condition indicates fault CCB/FCB Indicator Lamps & FusesCCB Ten Position Dipswitch Central Control Section SW1 CCB-SW2FCB Eight-Position Dipswitch Operating SequenceTemperature Setpoints System Control Algorithm UIM Operating ProceduresStages 1 and 2 will turn on in sequence from 1 to UIM ScreensTemperature Screen Status Displayed True Condition InputMenu Screen System Status ScreenDescription of FCB control states Operating Setpoint Adjustment Procedure High Limit Differential Setpoint Adjustment ProcedureOperating Differentialsetpoint Adjustment Procedure Fault Displayed Description Redled Lockout Hard Main Burners Tank Probe Tank Remote probe shorted or open FlashingDeliming Replacement Parts Tubecleaningprocedure Mechanical Removal of DepositsNEW Boiler Limited Warranty Conditions and ExceptionsTennessee Waltz Parkway, Ashland City, TN Phone