State Industries SBD71 120, SBD85 500 manual Troubleshooting the Effikal Damper

Page 29

SBD TANK TYPE HEATERS

SERVICE HANDBOOK

TROUBLESHOOTING THE EFFIKAL DAMPER

Condition:

Thermostat closed, damper closed

Wires are from left to right:

Black i Yellow i Brown i Orange

STEP 9A

TEST BETWEEN BLACK (COMMON) AND BROWN ON THE DAMPER BOARD

IF	THEN
24VAC is present	This is correct
24VAC is not present	• See Steps 1 thru 4
	Check the harness plugs connecting heater
	and damper for looseness or damage.

Technical Training Department	28
Ashland City, TN ©2003

Image 29

Contents SandBlaster SBD Handbook SBD Tank Type Heaters Service HandbookModel Breakdown SBD 85 500 P E a CGA D Clearances from Combustibles InstallationClearance to Combustibles Table ModelExterior Clearance Minimum AIR for Combustion Cubic Feet of AIR PER 1,000 BTUSquare Inch Per 4,000 Btuh MAKE-UP AIRDirect Communication Horizontal Ducts Vertical DuctsBackdraft Insufficient MAKE-UP AIRAIR for Combustion Contaminated AIRNatural Gas Propane Gas GAS Pressure RequirementsSBD GAS Valve Atmospheric, Single, and Multiple Heaters VentingNine Rules for Good Vents Nine Rules for Good Vents Power Vent Kits for Sidewall Venting Sequence of Operation SBD Sequence of OperationSBD Electrical Sequence 115/60/12A SBD Electrical Sequence of OperationThen Troubleshooting SBD Water HeatersTest the Transformer Ground 24 VAC FM Transformer High LIMIT, Left Terminal TestTest High Limit Right Terminal After Push in Reset 24 VAC is now presentReasons For Resetting Condition Cause Solution Check the PC Board Inspect the DamperPC Board Motor Test Service Switch Motor LeadThermostat Test Effikal Damper Adapter Service Motor Plug Switch Lead Heater HarnessNormal Operation Harness ChartTest for 24VAC Between Black Common and Brown Heater Harness Function Damper HarnessTest for 24VAC Between Black and Yellow Test for 24VAC Between Black and OrangeTest Between Black Common and Brown on the Damper Board Troubleshooting the Effikal DamperService Switch A1 is CORRECT, Check Service Switch PositionAdjust END Switch to CAM Contact Wire Harness Test IID Module Test Pilot Spark Test Power To Module May Be Interrupted To ResetSBD 120 400 GAS Valve Pilot Valve OHM TestPilot GAS Manifold Pressure TAP Blue White RED Pilot Valve Test SBD 500 onlyMain Burner Test Flame Rectification Flame RectificationPilot is lit Sparking has stopped Main GAS Valve Check Main GAS Valve Coil Check SBD 500 only Main GAS Valve Coil CheckGeneral Service Chart General Questions and Answers Series 110/111 SBD Models 120 Thru 500ASBD Models 120 Thru 500A Series Series Parts Description Pilot Burner, LP 193314-3 CGA Manifold 76244 76244-2 195121-1 98185-2 Component Part Information Name Specifications State Part NumbersSBD Service Checklist Water Piping Author Terry Mulder CommentsCommercial

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