A.O. Smith 401, 400 Direct Vent Vertical Category, Direct Vent Vertical Exhaust Configurations

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DIRECT VENT - VERTICAL (CATEGORY I)

Figure 8.

TABLE 12. DIRECT VENT (VERTICAL EXHAUST CONFIGURATIONS)

 

 

APPLIANCE

CERTIFIED

EXHAUST VENT

MAXIMUM

AIR INTAKE

AIR INTAKE

MAXIMUM

 

MODEL

CATEGORY

EXHAUST VENT

SIZE

EXHAUST VENT

MATERIAL

SIZE

AIR INTAKE

 

 

 

MATERIAL

INCHES (cm)

LENGTH FT (m)

 

INCHES (cm)

LENGTH FT (m)

 

I000

I

TYPE B OR

10"

35'

GAL. STEEL

8"

35'

 

EQUIVALENT

(25.4 cm)

(10.7 m)

PVC, ABS OR

(20.3 cm)

(10.7 m)

 

 

 

CPVC

 

 

 

 

 

 

 

 

1300

 

TYPE B OR

12"

35'

GAL.STEEL

10"

35'

I

PVC, ABS CR

1500

EQUIVALENT

(30.5 cm)

(10.7 m)

(25.4 cm)

(10.7 m)

 

CPVC

 

 

 

 

 

TYPE B OR

14"

20'

GAL. STEEL

10"

20'

1850

I

EQUIVALENT

PVC, ABS OR

(35.6 cm)

(6.1 m)

(25.4 cm)

(6.1 m)

 

 

 

 

CPVC

2100

I

TYPE B OR

14"

20'

GAL. STEEL

12"

20'

EQUIVALENT

(35.6 cm)

(6.1 m)

PVC, ABS OR

(30.5 cm)

(6.1 m)

 

 

 

CPVC

 

 

 

 

 

 

 

TYPE B OR

16"

20'

GAL. STEEL

12"

20'

2500

I

PVC, ABS OR

EQUIVALENT

(40.6 cm)

(6.1 m)

(30.5 cm)

(6.1 m)

 

 

 

CPVC

 

 

 

 

 

 

 

 

 

Connection for the appliance exhaust vent to the stack must be as direct as possible. Maximum and minimum venting length for Category I appliances shall be determined per the latest edition of the National Fuel Code (U.S.) and CAN/CSA-B149.1 Installation Code (Canada).

The vent should be installed so as to prevent the accumulation of condensate and, where necessary, have means provided for drainage of condensate. The horizontal breaching of a vent must have an upward slope of not less than 1/4 inch per linear foot (2 cm/m) from the boiler to the vent terminal. The horizontal portion of the vent shall be supported to maintain clearances and to prevent physical damage or separation of joints.

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Contents Installation Operation Maintenance Limited Warranty Copper Boilers for Hydronic Heating HOT Water SupplyGAS and Electrical Requirement DIMENSIONS/CAPACITIES DataDimensional Data Dimensions Data for Outdoor Configuration Recovery Capacities ForewordFEATURES/CONTROLS Water Flow Switch Differential Pressure Switch Combustion AIR BlowerBlocked Flue Pressure Switch ON/OFF SwitchRequired Ability Installation InstructionsSafety Relief Valves LocationLevelling Installation ClearancesChemical Vapor Corrosion AIR RequirementsVenting Horizontal Vent Installation INTAKE/EXHAUST Installation Requirements System InstallationInstallation AS Boiler Replacement GeneralEquivalent Standard Vent Vertical CategoryType B or 16 40.6 cmSteel Standard Vent Horizontal CategoryIII Stainless IIIDirect Vent Vertical Exhaust Configurations Direct Vent Vertical CategoryStainless GAL. Steel Sealed Direct Vent Horizontal Exhaust ConfigurationsDirect Vent Horizontal Category Stainless GAL.STEELHydronic Installation VAC System Controller Optional Space Heating ApplicationsInternal Contaminants Hard Water Conditions Tank Probe Installation ProcedureGAS Connections Water Line Connections Tank Probe OptionalSingle boiler with horizontal tank Single boiler with vertical tank Suggested Pipe Size For Multiple Gas Appliances Propane Gas Distance from Meter BTU Input Single Unit INSTALLATION, Suggested Pipe SizeWiring Connections 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 Purging of GAS Line OperationFilling and Purging Water System Inlet GAS PressureFor Your Safety Read Before Operating For Your Safety Read Before Operating Setting Degree Burns on Adult Skin AdjustmentsRisk of Scalds Temperature Control SystemWater Level Sensor open condition indicates fault Air Pressure Sensors open condition indicates faultGas Pressure Sensors open condition indicates fault CCB/FCB Indicator Lamps & FusesCCB Ten Position Dipswitch Central Control Section SW1 CCB-SW2FCB Eight-Position Dipswitch Operating SequenceStages 1 and 2 will turn on in sequence from 1 to Temperature Setpoints System Control AlgorithmUIM Operating Procedures UIM ScreensMenu Screen Temperature ScreenStatus Displayed True Condition Input System Status ScreenDescription of FCB control states Operating Differentialsetpoint Adjustment Procedure Operating Setpoint Adjustment ProcedureHigh Limit Differential Setpoint 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