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A.O. Smith 404, 400, 402, 401, 403, 405 instruction manual GAS Manifold Assembly

Models: 405 403 404 402 400 401

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GAS MANIFOLD ASSEMBLY

GB/GW 1000 - 1500

GB/GW 1850

GB/GW 2100

GB/GW 2500

Figure 14. GB/GW 1000 - 2500 Gas Manifold Assembly Diagrams.

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Image 23

A.O. Smith 404, 400, 402, 401, 403, 405 instruction manual GAS Manifold Assembly

Contents

Copper Boilers for Hydronic Heating HOT Water Supply Installation Operation Maintenance Limited Warranty GAS and Electrical Requirement DIMENSIONS/CAPACITIES DataDimensional Data Dimensions Data for Outdoor Configuration Foreword Recovery Capacities FEATURES/CONTROLS ON/OFF Switch Differential Pressure Switch Combustion AIR BlowerBlocked Flue Pressure Switch Water Flow Switch Location Installation InstructionsSafety Relief Valves Required Ability AIR Requirements Installation ClearancesChemical Vapor Corrosion Levelling Venting Horizontal Vent Installation General System InstallationInstallation AS Boiler Replacement INTAKE/EXHAUST Installation Requirements 16 40.6 cm Standard Vent Vertical CategoryType B or Equivalent III Standard Vent Horizontal CategoryIII Stainless Steel Direct Vent Vertical Category Direct Vent Vertical Exhaust Configurations Stainless GAL.STEEL Direct Vent Horizontal Exhaust ConfigurationsDirect Vent Horizontal Category Stainless GAL. Steel Sealed Hydronic Installation VAC System Controller Optional Space Heating ApplicationsInternal Contaminants Tank Probe Optional Tank Probe Installation ProcedureGAS Connections Water Line Connections Hard Water Conditions Single boiler with horizontal tank Single boiler with vertical tank Suggested Pipe Size For Multiple Gas Appliances Propane Gas BTU/HR Single Unit INSTALLATION, Suggested Pipe SizeWiring Connections Distance from Meter BTU Input GAS 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 Inlet GAS Pressure OperationFilling and Purging Water System Purging of GAS Line For Your Safety Read Before Operating For Your Safety Read Before Operating Control System AdjustmentsRisk of Scalds Temperature Setting Degree Burns on Adult Skin CCB/FCB Indicator Lamps & Fuses Air Pressure Sensors open condition indicates faultGas Pressure Sensors open condition indicates fault Water Level Sensor open condition indicates fault CCB-SW2 CCB Ten Position Dipswitch Central Control Section SW1 Operating Sequence FCB Eight-Position Dipswitch UIM Screens Temperature Setpoints System Control AlgorithmUIM Operating Procedures Stages 1 and 2 will turn on in sequence from 1 to System Status Screen Temperature ScreenStatus Displayed True Condition Input Menu Screen Description of FCB control states Operating Differentialsetpoint Adjustment Procedure Operating Setpoint Adjustment ProcedureHigh Limit Differential Setpoint Adjustment Procedure Fault Displayed Description Redled Lockout Hard Tank Probe Tank Remote probe shorted or open Flashing Main Burners Deliming Tubecleaningprocedure Mechanical Removal of Deposits Replacement Parts Conditions and Exceptions NEW Boiler Limited Warranty Tennessee Waltz Parkway, Ashland City, TN Phone