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State Industries SBD85 500, SBD71 120 manual Vertical Ducts, Horizontal Ducts, Make-Upair

Models: SBD85 500 SBD71 120

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VERTICAL DUCTS

SBD TANK TYPE HEATERS

SERVICE HANDBOOK

MAKE-UP AIR

VERTICAL DUCTS

1Square Inch Per 4,000 BTUH

Often it is more practical to install vertical make-up air ducts to the out doors. Again, two openings are required - one within 12 inches of the top of the enclosure and one within twelve inches of the bottom of the enclosure. Each opening shall have a free area of not less than 1 square inch per 4000 BTUH of the total input of all appliances within the enclosure.

MAKE-UP AIR

HORIZONTAL DUCTS

1 Square

Inch Per

2,000 BTUH

When the heater is installed in an interior room with no roof access for vertical ducts, horizontal make-up air ducts should be installed. When using horizontal ducts, two openings are required - one within 12 inches of the top of the enclosure and one within twelve inches of the bottom of the enclosure. Each opening shall have a free area of not less than 1 square inch per 2000 BTUH of the total input of all appliances within the enclosure.

Technical Training Department	7
Ashland City, TN ©2003

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State Industries SBD85 500, SBD71 120 Vertical Ducts, Horizontal Ducts, Make-Upair, Sbd Tank Type Heaters Service Handbook

Contents

Part Number STC-072 SERVICE HANDBOOKAlso includes Parts List SandBlasterSBD TANK TYPE HEATERS SERVICE HANDBOOK SBD HANDBOOKModel Breakdown SBD 85 500 P E A CGA D SBD TANK TYPE HEATERS SERVICE HANDBOOKINSTALLATION CLEARANCES FROM COMBUSTIBLESClearance to Combustibles Table MODELEXTERIOR CLEARANCE SBD TANK TYPE HEATERS SERVICE HANDBOOKAIR FOR COMBUSTION 10 CUBIC FEET OF AIR PER 1,000 BTUMinimum SBD TANK TYPE HEATERS SERVICE HANDBOOKSBD TANK TYPE HEATERS SERVICE HANDBOOK MAKE-UPAIRDIRECT COMMUNICATION 1 Square Inch Per 4,000 BTUH VERTICAL DUCTS HORIZONTAL DUCTSSBD TANK TYPE HEATERS SERVICE HANDBOOK MAKE-UPAIRSBD TANK TYPE HEATERS SERVICE HANDBOOK INSUFFICIENT MAKE-UPAIRBACKDRAFT SBD TANK TYPE HEATERS SERVICE HANDBOOK CONTAMINATED AIRAIR FOR COMBUSTION Flammable Items Supply Gas Manifold Pressure Tap Dirt Leg Manifold Gas PortGAS PRESSURE REQUIREMENTS Natural GasSee step 18 for SBD-500gas valve illustration SBD GAS VALVESBD TANK TYPE HEATERS SERVICE HANDBOOK VENTING Atmospheric, Single, and Multiple Heaters Combined VentsNine Rules for Good 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 HANDBOOKSBD SEQUENCE OF OPERATION 1.Thermostat calls for heat7.Thermostat satisfies 3.Intermittent Ignition ControlSBD ELECTRICAL SEQUENCE 100 - 109 Series SBD TANK TYPE HEATERS SERVICE HANDBOOKSBD TANK TYPE HEATERS SERVICE HANDBOOK SBD ELECTRICAL SEQUENCE OF OPERATION115/60/12A TROUBLESHOOTING SBD WATER HEATERS STEPTEST THE TRANSFORMER THENHIGH LIMIT, LEFT TERMINAL TEST Ground 24VAC FM TransformerSBD TANK TYPE HEATERS SERVICE HANDBOOK STEPTemperature Reset ButtonJumper Wire After Push in Reset - 24 VAC is now presentDamper Closed Damper OpenINSPECT THE DAMPER CHECK THE PC BOARDService Switch PC BOARD MOTOR TESTMotor Lead SBD TANK TYPE HEATERS SERVICE HANDBOOKTHERMOSTAT TEST SBD TANK TYPE HEATERS SERVICE HANDBOOKSTEP THENService SwitchEFFIKAL DAMPER AdapterHARNESS CHART NORMAL OPERATIONTEST FOR 24VAC BETWEEN BLACK COMMON AND BROWN Heater HarnessNORMAL OPERATION continued STEP 8ATEST FOR 24VAC BETWEEN BLACK AND ORANGE STEP 8BTROUBLESHOOTING THE EFFIKAL DAMPER STEP 9ASBD TANK TYPE HEATERS SERVICE HANDBOOK ConditionTROUBLESHOOTING THE EFFIKAL DAMPER continued A1 IS CORRECT, CHECK SERVICE SWITCH POSITIONService Switch STEP 9BADJUST END SWITCH TO CAM CONTACT STEP 10ASTEP 10B TROUBLESHOOTING THE EFFIKAL DAMPER continuedWIRE HARNESS TEST SBD TANK TYPE HEATERS SERVICE HANDBOOKSTEP THENIID MODULE TEST SBD TANK TYPE HEATERS SERVICE HANDBOOKSTEP THENPower To Module May Be Interrupted To Reset PILOT SPARK TESTSBD TANK TYPE HEATERS SERVICE HANDBOOK STEPSTEP 14A PILOT VALVE - OHM TESTSBD TANK TYPE HEATERS SERVICE HANDBOOK THENSTEP 14B PILOT VALVE TEST - SBD 500 ONLYSBD TANK TYPE HEATERS SERVICE HANDBOOK THENMAIN BURNER TEST SBD TANK TYPE HEATERS SERVICE HANDBOOKSTEP THENFLAME RECTIFICATION STEP 16. FLAME RECTIFICATIONSBD TANK TYPE HEATERS SERVICE HANDBOOK STEPPilot is lit - Sparking has stopped SBD TANK TYPE HEATERS SERVICE HANDBOOKSTEP IID MODULE TESTSTEP 18A MAIN GAS VALVE CHECKSBD TANK TYPE HEATERS SERVICE HANDBOOK TH TRSTEP 18B MAIN GAS VALVE COIL CHECKSBD TANK TYPE HEATERS SERVICE HANDBOOK THENSBD TANK TYPE HEATERS GENERAL SERVICE CHARTSERVICE HANDBOOK SBD TANK TYPE HEATERS GENERAL QUESTIONS AND ANSWERSSERVICE HANDBOOK SBD MODELS 120 THRU 500A SERIES 110/111SERVICE HANDBOOK EFFIKAL DAMPER DRIVE ASSEMBLY GAS VALVESSBD TANK TYPE HEATERS SBD MODELS 120 THRU 500A continued SERIESSERVICE HANDBOOK Series SERVICE HANDBOOKCLEANOUT ASSEMBLY SBD MODELS 120 THRU 500A continued SERIESSERVICE HANDBOOK CLEANOUT ASSEMBLYSBD MODELS 120 THRU 500A continued SERIES SBD TANK TYPE HEATERSSERVICE HANDBOOK CLEANOUT ASSEMBLYSBD MODELS 120 THRU 500A continued SERIES SBD TANK TYPE HEATERSSERVICE HANDBOOK CLEANOUT ASSEMBLYSBD MODELS 120 THRU 500A continued SERIES SBD TANK TYPE HEATERSSERVICE HANDBOOK CLEANOUT ASSEMBLYSBD MODELS 120 THRU 500A continued SERIES SBD TANK TYPE HEATERSSERVICE HANDBOOK CLEANOUT ASSEMBLYSBD MODELS 120 THRU 500A continued SERIES SBD TANK TYPE HEATERSCOMPONENT PART INFORMATION SPECIFICATIONSNAME STATE PARTSBD SERVICE CHECKLIST V.WATER PIPING SERVICE HANDBOOKSBD TANK TYPE HEATERS COMMENTS SERVICE HANDBOOKAuthor Terry Mulder SBD TANK TYPE HEATERSState Water Heaters COMMERCIALThe Expert’s Choice Copyright 2006 State Industries, Inc