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State Industries SBD85 500 manual Air For Combustion, CUBIC FEET OF AIR PER 1,000 BTU, Minimum

Models: SBD85 500 SBD71 120

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SBD TANK TYPE HEATERS

SERVICE HANDBOOK

AIR FOR COMBUSTION

10 CUBIC FEET OF AIR PER 1,000 BTU

1,000 +

BTU

10CU.

FT.

COMB.

AIR

(Minimum)

2.5CU.

FT.

EXCESS

AIR

Stoichiometric or theoretical complete combustion requires 10 cubic feet of air per 1000 BTUH input of the gas input. The National Fuel Gas Code also recommends an additional 2.5 cu.ft. of "excess" air. This 12.5 cu.ft minimum supply air per 1000 BTUH input applies to natural and propane gas models.

The National Fuel Gas Code also specifies minimum make-up air opening sizes for various building installations. (Ref: NFPA 54, ANSI Z223.1, sec 5.3)

Technical Training Department	5
Ashland City, TN ©2003

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State Industries SBD85 500 Air For Combustion, CUBIC FEET OF AIR PER 1,000 BTU, Minimum, 1,000 + BTU, 10CU FT COMB AIR

Contents

Also includes Parts List Part Number STC-072SERVICE HANDBOOK SandBlasterSBD TANK TYPE HEATERS SERVICE HANDBOOK SBD HANDBOOKModel Breakdown SBD 85 500 P E A CGA D SBD TANK TYPE HEATERS SERVICE HANDBOOKClearance to Combustibles Table INSTALLATIONCLEARANCES FROM COMBUSTIBLES MODELEXTERIOR CLEARANCE SBD TANK TYPE HEATERS SERVICE HANDBOOKMinimum AIR FOR COMBUSTION10 CUBIC FEET OF AIR PER 1,000 BTU SBD TANK TYPE HEATERS SERVICE HANDBOOKMAKE-UPAIR DIRECT COMMUNICATION 1 Square Inch Per 4,000 BTUHSBD TANK TYPE HEATERS SERVICE HANDBOOK SBD TANK TYPE HEATERS SERVICE HANDBOOK VERTICAL DUCTSHORIZONTAL DUCTS MAKE-UPAIRINSUFFICIENT MAKE-UPAIR BACKDRAFTSBD TANK TYPE HEATERS SERVICE HANDBOOK CONTAMINATED AIR AIR FOR COMBUSTION Flammable ItemsSBD TANK TYPE HEATERS SERVICE HANDBOOK GAS PRESSURE REQUIREMENTS Supply Gas Manifold Pressure Tap Dirt LegManifold Gas Port Natural GasSBD GAS VALVE SBD TANK TYPE HEATERS SERVICE HANDBOOKSee step 18 for SBD-500gas valve illustration Nine Rules for Good Vents VENTING Atmospheric, Single, and Multiple HeatersCombined Vents SBD TANK TYPE HEATERS SERVICE HANDBOOKNine Rules for Good Vents continued SBD TANK TYPE HEATERS SERVICE HANDBOOKSBD TANK TYPE HEATERS SERVICE HANDBOOK Nine Rules for Good Vents continuedPOWER VENT KITS FOR SIDEWALL VENTING SBD TANK TYPE HEATERS SERVICE HANDBOOK7.Thermostat satisfies SBD SEQUENCE OF OPERATION1.Thermostat calls for heat 3.Intermittent Ignition ControlSBD ELECTRICAL SEQUENCE 100 - 109 Series SBD TANK TYPE HEATERS SERVICE HANDBOOKSBD ELECTRICAL SEQUENCE OF OPERATION 115/60/12ASBD TANK TYPE HEATERS SERVICE HANDBOOK TEST THE TRANSFORMER TROUBLESHOOTING SBD WATER HEATERSSTEP THENSBD TANK TYPE HEATERS SERVICE HANDBOOK HIGH LIMIT, LEFT TERMINAL TESTGround 24VAC FM Transformer STEPJumper Wire TemperatureReset Button After Push in Reset - 24 VAC is now presentINSPECT THE DAMPER Damper ClosedDamper Open CHECK THE PC BOARDMotor Lead Service SwitchPC BOARD MOTOR TEST SBD TANK TYPE HEATERS SERVICE HANDBOOKSTEP THERMOSTAT TESTSBD TANK TYPE HEATERS SERVICE HANDBOOK THENEFFIKAL DAMPER ServiceSwitch AdapterTEST FOR 24VAC BETWEEN BLACK COMMON AND BROWN HARNESS CHARTNORMAL OPERATION Heater HarnessTEST FOR 24VAC BETWEEN BLACK AND ORANGE NORMAL OPERATION continuedSTEP 8A STEP 8BSBD TANK TYPE HEATERS SERVICE HANDBOOK TROUBLESHOOTING THE EFFIKAL DAMPERSTEP 9A ConditionService Switch TROUBLESHOOTING THE EFFIKAL DAMPER continuedA1 IS CORRECT, CHECK SERVICE SWITCH POSITION STEP 9BSTEP 10B ADJUST END SWITCH TO CAM CONTACTSTEP 10A TROUBLESHOOTING THE EFFIKAL DAMPER continuedSTEP WIRE HARNESS TESTSBD TANK TYPE HEATERS SERVICE HANDBOOK THENSTEP IID MODULE TESTSBD TANK TYPE HEATERS SERVICE HANDBOOK THENSBD TANK TYPE HEATERS SERVICE HANDBOOK Power To Module May Be Interrupted To ResetPILOT SPARK TEST STEPSBD TANK TYPE HEATERS SERVICE HANDBOOK STEP 14APILOT VALVE - OHM TEST THENSBD TANK TYPE HEATERS SERVICE HANDBOOK STEP 14BPILOT VALVE TEST - SBD 500 ONLY THENSTEP MAIN BURNER TESTSBD TANK TYPE HEATERS SERVICE HANDBOOK THENSBD TANK TYPE HEATERS SERVICE HANDBOOK FLAME RECTIFICATIONSTEP 16. FLAME RECTIFICATION STEPSTEP Pilot is lit - Sparking has stoppedSBD TANK TYPE HEATERS SERVICE HANDBOOK IID MODULE TESTSBD TANK TYPE HEATERS SERVICE HANDBOOK STEP 18AMAIN GAS VALVE CHECK TH TRSBD TANK TYPE HEATERS SERVICE HANDBOOK STEP 18BMAIN GAS VALVE COIL CHECK THENGENERAL SERVICE CHART SERVICE HANDBOOKSBD TANK TYPE HEATERS GENERAL QUESTIONS AND ANSWERS SERVICE HANDBOOKSBD TANK TYPE HEATERS SERVICE HANDBOOK SBD MODELS 120 THRU 500ASERIES 110/111 EFFIKAL DAMPER DRIVE ASSEMBLY GAS VALVESSBD MODELS 120 THRU 500A continued SERIES SERVICE HANDBOOKSBD TANK TYPE HEATERS CLEANOUT ASSEMBLY SeriesSERVICE HANDBOOK SBD MODELS 120 THRU 500A continued SERIESSBD MODELS 120 THRU 500A continued SERIES SERVICE HANDBOOKCLEANOUT ASSEMBLY SBD TANK TYPE HEATERSSBD MODELS 120 THRU 500A continued SERIES SERVICE HANDBOOKCLEANOUT ASSEMBLY SBD TANK TYPE HEATERSSBD MODELS 120 THRU 500A continued SERIES SERVICE HANDBOOKCLEANOUT ASSEMBLY SBD TANK TYPE HEATERSSBD MODELS 120 THRU 500A continued SERIES SERVICE HANDBOOKCLEANOUT ASSEMBLY SBD TANK TYPE HEATERSSBD MODELS 120 THRU 500A continued SERIES SERVICE HANDBOOKCLEANOUT ASSEMBLY SBD TANK TYPE HEATERSNAME COMPONENT PART INFORMATIONSPECIFICATIONS STATE PARTSBD SERVICE CHECKLIST SERVICE HANDBOOK SBD TANK TYPE HEATERSV.WATER PIPING Author Terry Mulder COMMENTSSERVICE HANDBOOK SBD TANK TYPE HEATERSThe Expert’s Choice State Water HeatersCOMMERCIAL Copyright 2006 State Industries, Inc