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State Industries SBD71 120 Main Gas Valve Coil Check, Sbd Tank Type Heaters Service Handbook

Models: SBD85 500 SBD71 120

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SBD TANK TYPE HEATERS

SERVICE HANDBOOK

STEP 18B

MAIN GAS VALVE COIL CHECK

PILOT GAS

	MANIFOLD
	PRESSURE
	TAP
	BLUE
	WHITE
The PV wire is connected to the blue wire	RED
	RED
The MV/PV wire on the IID is connected to the white wire.
The MV wire is disconnected from the gas valve.	MANIFOLD

	GAS	MANIFOLD
	GAS	PRESSURE
		PRESSURE
		TAP

STEP 18B. MAIN GAS VALVE COIL CHECK – SBD 500 ONLY

Condition:

•Pilot lights

•Sparking stops

•No main burner ignition Test Procedure:

•Power off

•Disconnect red, main valve wire from module MV terminal

•Meter set to test for DC amperage

•10A wire to red gas valve wire, COM wire to MV terminal of ignition module

•Turn power on to heater

•After pilot lights and sparking stops

IF:	THEN:
.25 to .35 DC Amps is not present	•	Replace the gas valve
.25 to .35DCA is present	•	Main burner gas should ignite.

Be certain to correct you meter wire connections and setting before performing further tests.

Technical Training Department	40
Ashland City, TN ©2003

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State Industries SBD71 120, SBD85 500 manual Main Gas Valve Coil Check, Sbd Tank Type Heaters Service Handbook, Then

Contents

SERVICE HANDBOOK Part Number STC-072Also includes Parts List SandBlasterSBD HANDBOOK SBD TANK TYPE HEATERS SERVICE HANDBOOKSBD TANK TYPE HEATERS SERVICE HANDBOOK Model Breakdown SBD 85 500 P E A CGA DCLEARANCES FROM COMBUSTIBLES INSTALLATIONClearance to Combustibles Table MODELSBD TANK TYPE HEATERS SERVICE HANDBOOK EXTERIOR CLEARANCE10 CUBIC FEET OF AIR PER 1,000 BTU AIR FOR COMBUSTIONMinimum SBD TANK TYPE HEATERS SERVICE HANDBOOKSBD TANK TYPE HEATERS SERVICE HANDBOOK MAKE-UPAIRDIRECT COMMUNICATION 1 Square Inch Per 4,000 BTUH HORIZONTAL DUCTS VERTICAL 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 Manifold Gas Port Supply Gas Manifold Pressure Tap Dirt LegGAS PRESSURE REQUIREMENTS Natural GasSee step 18 for SBD-500gas valve illustration SBD GAS VALVESBD TANK TYPE HEATERS SERVICE HANDBOOK Combined Vents VENTING Atmospheric, Single, and Multiple HeatersNine Rules for Good Vents SBD TANK TYPE HEATERS SERVICE HANDBOOKSBD TANK TYPE HEATERS SERVICE HANDBOOK Nine Rules for Good Vents continuedNine Rules for Good Vents continued SBD TANK TYPE HEATERS SERVICE HANDBOOKSBD TANK TYPE HEATERS SERVICE HANDBOOK POWER VENT KITS FOR SIDEWALL VENTING1.Thermostat calls for heat SBD SEQUENCE OF OPERATION7.Thermostat satisfies 3.Intermittent Ignition ControlSBD TANK TYPE HEATERS SERVICE HANDBOOK SBD ELECTRICAL SEQUENCE 100 - 109 SeriesSBD TANK TYPE HEATERS SERVICE HANDBOOK SBD ELECTRICAL SEQUENCE OF OPERATION115/60/12A STEP TROUBLESHOOTING SBD WATER HEATERSTEST THE TRANSFORMER THENGround 24VAC FM Transformer HIGH LIMIT, LEFT TERMINAL TESTSBD TANK TYPE HEATERS SERVICE HANDBOOK STEPReset Button TemperatureJumper Wire After Push in Reset - 24 VAC is now presentDamper Open Damper ClosedINSPECT THE DAMPER CHECK THE PC BOARDPC BOARD MOTOR TEST Service SwitchMotor Lead SBD TANK TYPE HEATERS SERVICE HANDBOOKSBD TANK TYPE HEATERS SERVICE HANDBOOK THERMOSTAT TESTSTEP THENSwitch ServiceEFFIKAL DAMPER AdapterNORMAL OPERATION HARNESS CHARTTEST FOR 24VAC BETWEEN BLACK COMMON AND BROWN Heater HarnessSTEP 8A NORMAL OPERATION continuedTEST FOR 24VAC BETWEEN BLACK AND ORANGE STEP 8BSTEP 9A TROUBLESHOOTING THE EFFIKAL DAMPERSBD TANK TYPE HEATERS SERVICE HANDBOOK ConditionA1 IS CORRECT, CHECK SERVICE SWITCH POSITION TROUBLESHOOTING THE EFFIKAL DAMPER continuedService Switch STEP 9BSTEP 10A ADJUST END SWITCH TO CAM CONTACTSTEP 10B TROUBLESHOOTING THE EFFIKAL DAMPER continuedSBD TANK TYPE HEATERS SERVICE HANDBOOK WIRE HARNESS TESTSTEP THENSBD TANK TYPE HEATERS SERVICE HANDBOOK IID MODULE TESTSTEP THENPILOT SPARK TEST Power To Module May Be Interrupted To ResetSBD TANK TYPE HEATERS SERVICE HANDBOOK STEPPILOT VALVE - OHM TEST STEP 14ASBD TANK TYPE HEATERS SERVICE HANDBOOK THENPILOT VALVE TEST - SBD 500 ONLY STEP 14BSBD TANK TYPE HEATERS SERVICE HANDBOOK THENSBD TANK TYPE HEATERS SERVICE HANDBOOK MAIN BURNER TESTSTEP THENSTEP 16. FLAME RECTIFICATION FLAME RECTIFICATIONSBD TANK TYPE HEATERS SERVICE HANDBOOK STEPSBD TANK TYPE HEATERS SERVICE HANDBOOK Pilot is lit - Sparking has stoppedSTEP IID MODULE TESTMAIN GAS VALVE CHECK STEP 18ASBD TANK TYPE HEATERS SERVICE HANDBOOK TH TRMAIN GAS VALVE COIL CHECK STEP 18BSBD TANK TYPE HEATERS SERVICE HANDBOOK THENSBD TANK TYPE HEATERS GENERAL SERVICE CHARTSERVICE HANDBOOK SBD TANK TYPE HEATERS GENERAL QUESTIONS AND ANSWERSSERVICE HANDBOOK SERIES 110/111 SBD MODELS 120 THRU 500ASERVICE HANDBOOK EFFIKAL DAMPER DRIVE ASSEMBLY GAS VALVESSBD TANK TYPE HEATERS SBD MODELS 120 THRU 500A continued SERIESSERVICE HANDBOOK SERVICE HANDBOOK SeriesCLEANOUT ASSEMBLY SBD MODELS 120 THRU 500A continued SERIESCLEANOUT ASSEMBLY SERVICE HANDBOOKSBD MODELS 120 THRU 500A continued SERIES SBD TANK TYPE HEATERSCLEANOUT ASSEMBLY SERVICE HANDBOOKSBD MODELS 120 THRU 500A continued SERIES SBD TANK TYPE HEATERSCLEANOUT ASSEMBLY SERVICE HANDBOOKSBD MODELS 120 THRU 500A continued SERIES SBD TANK TYPE HEATERSCLEANOUT ASSEMBLY SERVICE HANDBOOKSBD MODELS 120 THRU 500A continued SERIES SBD TANK TYPE HEATERSCLEANOUT ASSEMBLY SERVICE HANDBOOKSBD MODELS 120 THRU 500A continued SERIES SBD TANK TYPE HEATERSSPECIFICATIONS COMPONENT PART INFORMATIONNAME STATE PARTSBD SERVICE CHECKLIST V.WATER PIPING SERVICE HANDBOOKSBD TANK TYPE HEATERS SERVICE HANDBOOK COMMENTSAuthor Terry Mulder SBD TANK TYPE HEATERSCOMMERCIAL State Water HeatersThe Expert’s Choice Copyright 2006 State Industries, Inc