State Industries STC-074 specifications 250A 275A 310A 366A 400A

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SBN TANK TYPE COMMERCIAL GAS WATER HEATER

SERVICE HANDBOOK

Item		250(A)	275(A)		310(A)	366(A)	400(A)

Blower Assembly:
3	Blower	194408	194408		194408	194408	194408
4	Outlet Assembly, Exhaust	194424	194424		194424	194424	194424
6	Burner, Orifice Bracket, Main	98044	98044	...........	98044	98044	98044
7	Burner Orifice, Main (N) SBN	76243-30	76243-33		76243-31	76243-30 .... 76243-29
8	Burner Assembly, Main SBN	194648	194648		194648	194648	194648
9	Burner w/Igniter Bracket, Main SBN	.. 194383	194383		194383	194383	194383
11	Gasket, Cleanout	99038	99038	...........	99038	99038	99038
14	Control, Ignition Assembly	194392	194392		194392	194392	194392
17	Cover, Control Box	194395	194395		194395	194395	194395
18	Cover, Inner SBN	194388-4	194388-4		194388-4	194388	194388
19	Cover, Jacket	194389	194389		194389	194389	194389
*22	Igniter, Flame Sensor	194405	194405		194405	194405	194405
23	Insulation, Top	194439	194439		194439	194439	194439
*39	Manual, Instruction SBN	194403	194403		194403	194403	194403
40	Plate, Mounting	193243	193243		193243	193243	193243
41	Probe/ECO, Upper Thermostat	194396	194396		194396	194396	194396
42	Probe/Lower Thermostat	194397	194397		194397	194397	194397
43	Rod, Anode	180618-42 ...	180618-42		.... 180618-42 ...	180618-42 .. 180618-42
44	Switch, Blower Prover SBN	194411-3	194411-8		194411-2	194411	19441-3
45	Switch, Low Gas Pressure	191149-5	191149-5		191149-5	191149-5 .... 191149-5
46	Switch, Off/On	193243	193243		193243	193243	193243
47	Thermostat, Digital	194393	194393		194393	194393	194393
48	Tube, Inlet	192626-1	192626-1		192626-1	192626-1	.... 192626-1
51	Valve Gas - Natural SBN	194536-1	194536-1		194536	194536	194536
52	Valve, T&P	192467	192467		192467	192467	192467
*53	Wire Harness - Control Natural	194545	194545		194545	194545	194545
	Wire Harness - Control Propane	194399	194399		194399	194399	194399
*54	Wire Harness - Power	194398	194398		194398	194398	194398
*Items not illustrated.
Part numbers underlined are recommended stock items for emergency replacement.
Request from Parts Department by giving all information
Request from Parts Department by giving all information					High Altitude Main Burner Orifice
such as model and series number, type of gas and specifications.					High Altitude Main Burner Orifice
					Table (NEO)
					Model	Orifice Drill Size
					120		37
					154		42
					180		37
					250		32
					275		38
					310		36
					366		32
					390		31

©2003

42

Technical Training Department

Ashland City, Tennessee

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Contents Service Handbook Table of Contents SBN Service Handbook Introduction Custom Commercial Storage Tank Model Number Break Down QualificationsTop and Front Views of Minimum Clearances To Combustibles Installation ConsiderationsRequired Exterior Clearances Exterior ClearanceComb AIR Make-Up Air Direct Communication Not Direct Vent Make-Up Air Horizontal Ducts Make-Up Air Vertical DuctsAir for Combustion Flammable Items Contaminated AirGas Valve Outlet View Venting Atmospheric Multiple Heaters VentingNine Rules for Good Vents SBN Tank Type Commercial GAS Water Heater Service Handbook SBN Tank Type Commercial GAS Water Heater Service Handbook Multiple Gas Fired Tank-Type Heaters Type B GAS VentTechnical Dataventing Top View SequenceFront View of Water Heater SBN Tank Type Commercial GAS Water Heater Service Handbook HSI Integrated Ignition Control Board HSI Lower Front View of SBN Water HeaterECO Wiring DiagramElectrical Sequence of SBN Water Heater Operation PRE-SERVICE Checklist Water Heater Control Ignition Control Board ConditionsTest 2 Polarity Check Flash Codes of Diagnostic IndicatorTest 3 Continuity Check High Limit ECO Test 2 Polarity CheckIs not present Test 4 Upper Temperature Probe Continuity CheckTest 3 Continuity Check of High Limit ECO Is indicatedWater Heater Control Test 5 Calling for Heat no Inducer OperationCheck to Inducer Test on Ignition Board 4 Pin Receptacle E4 VAC Check of Blower Prover/Low Gas Pressure Circuit Test 6 Inducer ON-NO IgnitionVoltage is not present between E4, Pin Test of Igniter and gas valve circuit Test 8 Igniter Heats no Main BurnerContinuity Check Of Gas Valve Coil Test 9 Igniter Heats no Main BurnerFlame Prover Circuit Check Test 10 Main Burner Ignition for Less than 5 SecondsIf… Then Test 11 Water Heater Shutting OFF below SettingDisplay Lights on Integrated Heater Control ECO SBN Tank Type Commercial GAS Water Heater Service Handbook Technical Training Department 120 154 180 199 200A 250A 275A 310A 366A 400A General Questions and Answers SBN Tank Type Commercial GAS Water Heater Service Handbook Draft Proving Pressure Switch Table