State Industries SHE50-100PE, SHE50-100NE, GP650HTPDT manual AIR Requirements, Contaminated AIR

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ULTRA HIGH EFFICIENCY POWER VENT/POWER DIRECT VENT - SERVICE MANUAL

AIR REQUIREMENTS

Carefully review the requirements for combustion and ventilation air in the Instruction Manual that came with the water heater. Failure to meet these requirements when the water heater is installed or overlooking their importance when servicing the water heater often results in needless down time, unnecessary parts replacement, and customer dissatisfaction. If the Instruction Manual is not on hand copies can be obtained from the manufacturers web site or by calling the technical support phone number shown on the water heater labeling.

An inadequate supply of air for combustion and ventilation often causes operational problems. A lack of combustion and ventilation air can create a negative ambient air pressure in the installed space which can lead to improper combustion and operational problems with air pressure switches.

CONTAMINATED AIR

Combustion air that is contaminated can greatly diminish the life span of the water heater and water heater components such as hot surface igniters and burners. Propellants of aerosol sprays, beauty shop supplies, water softener chemicals and chemicals used in dry cleaning processes that are present in the combustion, ventilation or ambient air can cause such damage.

Vapors from volatile compounds such as solvents, cleaners, chlorine based chemicals and refrigerants in addition to being highly flammable in many cases, can also react to form highly corrosive substances such as hydrochloric acid inside the water heater’s combustion chamber. The results can be hazardous and cause product failure.

If this water heater will be installed in beauty shops, barber shops or laundries with dry cleaning equipment, it is imperative the water heater be installed as a Direct Vent appliance so that air for combustion is derived directly from the outside atmosphere through a sealed intake air pipe. See the Installation of Vent System section in the Instruction Manual that came with the water heater for more information on Direct Vent installations.

Technical Literature Department

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Ashland City, TN © 2008

Servicing should only be performed by a Qualified Service Agent

 

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Contents Service Handbook Ultra High Efficiency Power VENT/POWER Direct Vent Qualifications Qualified Service Agent Service WarningImportant Service Reminder Tools Required Closed Water Systems Thermal ExpansionAIR Requirements Contaminated AIRVenting Maximum Equivalent Length RequirementsMaximum Elbow Requirements Service Notes VentingPipe Size Requirements Number Maximum Pipe Elbows Length Feet MetersCorrectly Wired Outlet Service Notes ElectricalVAC 1Ø Power Supply Electrical RequirementsHOW IT Works Internal ViewService Notes Blower BlowerService Notes Burner Flame Sensor BurnerBurner & Blower Removal On NextService Notes Blower Flange & Blower Adapter Gaskets Burner/Blower RemovalVenturi BlowerGAS Valve Gas Valve RemovalGasket Orifice GAS Pressure Testing Service Notes Checking Gas PressuresService Notes Gas Pressure Adjustment GAS PressuresGas Pressures AIR Pressure Switches Normal State Activated StateBlower Prover Switch Blocked Intake SwitchBlocked Exhaust Switch AIR Pressure Switch Operation Blower Prover FailureAIR Pressure Switch Testing Normal State TestOperational State Test Air Pressure Switch Parameters Pressure TestBlower Prover Blocked Intake Blocked Exhaust Page Flame Sensing Test Measuring Flame Sensing CurrentFlame Sensor Service Notes Hot Surface Igniters Igniter Current TestControl System Features IntroductionService Notes Button Pad Ribbon Cable UIMCommercial & Residential Product Differences Discreet Menu Contact InformationService Note Sequence of Operation Display Desktop ScreenStatus Icons Status Icon DescriptionOperational States Modes State DescriptionOperating SET Point Adjustment Action DisplayControl System Menus ECO Service Notes CCB Replacement CCBJ10 J13 J15 J11 J16 Socket IdentificationJ2 Socket 120 VAC To Blower J3 Socket 120 VAC Power SupplyJ1 Socket Transformer PIN # DescriptionRetry Ext Use Yes Input Type Tstat OpenWiring Diagram Service Notes Polarity & GroundSequence of Operation YESRough Starting Rough Operation Note Resetting the control systemImportant Service Reminder Heater Status MenuUIM is Inoperable Control System UnresponsiveUIM Display Is Blank Displayed Message CHECK/REPAIR CONDITION/INDICATESFault Messages AC ReversedFlame Probe Short Upper Probe ShortFlame Detect Error Energy Cut Out ECOBlocked Inlet Blocked Exhaust Vent Perform ALL These Tests with Power Blower Prover OpenTurned on and a Call for Heat Active Low Igniter Current Ignition Failure Rough Starting Rough Operation NoteCheck for 24 VAC to the Gas Valve solenoid coil Gas Valve Failure Communication FailureTennessee Waltz Parkway Ashland City, TN