A.O. Smith HYB-90N warranty Parts Identification, Item #, Description

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PARTS IDENTIFICATION

PARTS IDENTIFICATION

ITEM #

DESCRIPTION

ABafﬂe, Flue

BHot Water Outlet Nipple (w/ Anode, Heat Trap)

CT&P Relief Valve

DCold Water Inlet Nipple (w/ Dip Tube, Heat Trap)

ECover, Back-Flue Gas Return

F	Top Insulation

GFlue Gas Return Duct Assy

HShroud, Back-Tank Assembly

IShroud, Right Side-Tank Assembly

J Temperature Switch

K Condensate Trap

L Bafﬂe, Exhaust

M Hose, 12” Braided (Heat Engine Cold In)

N Drain Valve

O Tank Thermistor (Probe)

P Front Door Lock (Hook Cam)

Q Shroud, Right Side-Tank Assembly & Door

R Display Subassembly

S Heat Engine

T Cover, Front-Flue Gas Return

U Hi-Limit Temperature Switch

V Air Inlet Cover (Direct Vent)

W Air Inlet Cover Gasket (Direct Vent)

X ECO Switch

YTransformer

Z(PCB) Circuit Board Assembly (w/ Base)

1 Power Cord Assembly

2 Flame Sensor

3 Spark Generator

4 Gas Valve

5 Blower Motor Assembly

6 Circulation Pump

7 Internal Flow Valve

8 Front Cover Gasket

9 Water Inlet Fitting (Flange)

10Inlet Water Filter

11Return Fitting (Flange)

12Barbed Fitting

13Heat Exchanger

54	www.hotwater.com

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Contents Installation and Operating Manual For Your SafetyPOWER VENT GAS MODELS HYBRID GAS WATER HEATERSTABLE OF CONTENTS IMPORTANT INFORMATIONSAFE INSTALLATION, USE AND SERVICE IMPORTANT DEFINITIONSGENERAL SAFETY DANGER INTRODUCTION Page REPLACEMENT PARTS AND DELIMING PRODUCTS GET TO KNOW YOUR WATER HEATER - GAS MODELSINSTALLATION CONSIDERATIONS ROUGH IN DIMENSIONSINSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS WATER PIPING - MIXING VALVE USAGE Water Potable Heating All models are consideredFACTS TO CONSIDER ABOUT LOCATION HANDLE INSTALLATION EARTHQUAKE ZONES Access ToScrews Top Casing FrontCOMBUSTION AIR AND VENTILATION APPLIANCES IN UNCONFINED SPACESAPPLIANCES IN CONFINED SPACES B. ALL AIR FROM OUTDOORS See Figures 12, 13 and CLOSED WATER SYSTEMS CHEMICAL VAPOR CORROSIONWATER PIPING THERMAL EXPANSIONHARD WATER TEMPERATURE-PRESSURE RELIEF VALVET&P Valve and Pipe Insulation if supplied GAS PIPING SEDIMENT TRAPSFLOODING/FREEZING HIGH ALTITUDE INSTALLATIONSGAS LINE PURGING FILLING THE WATER HEATERIf using 2 inch vent pipe VENT PIPE TERMINATIONPLANNING THE VENT SYSTEM TERMINATION ELBOW If using 3 inch vent pipeRODENT SCREEN INSTALL INTO ELBOW GROUND LEVEL OR MAXIMUM SNOW LINE ELBOW STRAPCONDENSATE INSTALLATION OF VENT SYSTEMVENT TERMINAL INSTALLATION, SIDEWALL CONDENSATION WARNINGSEQUENCE OF INSTALLATIONS INSTALLATION SEQUENCEVent terminals supplied with heater must be used INSTALLATION OF VENT SYSTEM, SIDEWALL INSTALLATION OF VERTICAL VENT SYSTEMVENT PIPE PREPARATION RECOMMENDED BRUSH* SIZE FOR PRIMER AND CEMENT APPLICATIONS STEP ASTEP B STEP F U.S. POWER VENTSTEP E STEP G CONNECTION TO VENT PIPEVENT HOODS MAY BE EXTREMELY HOT DURING OPERATION FIGURE 33a ELECTRICAL CONNECTIONSCALIBRATION “OFF”, “up”OPERATING INSTRUCTIONS DISPLAY PANELNumeric Display CONTROLS. WIRING ERRORS CAN CAUTION LABEL ALL WIRES PRIOR TODISCONNECTION WHEN SERVICING CAUSE IMPROPER AND DANGEROUSOPERATING INSTRUCTIONS LIGHTING INSTRUCTIONSFOR YOUR SAFETY READ BEFORE LIGHTING TO TURN OFF GAS TO APPLIANCEHEAT CYCLE DEFINITIONS STATEDESCRIPTION TEMPERATURE REGULATION UNIQUE HYBRID FEATURES Temperature ProbesWater Circulation Pump Line Voltage Monitor START UP CONDITIONS CONSTANT OUTPUT TEMPERATURE CONTROLDetection of Failure to Maintain Desired Constant Temperature OPERATIONAL CONDITIONSVENTING SYSTEM INSPECTION MAINTENANCEHOUSEKEEPING BURNER OPERATION AND INSPECTIONTEMPERATURE-PRESSURE RELIEF VALVE OPERATION ANODE ROD REPLACEMENTCLEANING THE INLET WATER FILTER MOTORSCLEANING THE HEAT ENGINE FLUSHING THE HEAT EXCHANGER LIME BUILD- UPFAULT INDICATION AND ERROR CODES DRAINING THE TANKCode and DIAGNOSTIC DISPLAYDiagnostic DisplayedCause FaultLockout RemedyCode FaultLockout DescriptionCode TROUBLESHOOTING b.The unit display is an error code WHEN THE TAP IS OPENEDCheck if there is any error code on system installed, or there is aSERVICE LEAKAGE CHECKPOINTSPARTS IDENTIFICATION ITEM #A Bafﬂe, Flue B Hot Water Outlet Nipple w/ Anode, Heat Trap AB C DEF G T SH R I Q P REPLACEMENT PARTS DESCRIPTION KIT #CLAIM PROCEDURE LIMITED RESIDENTIAL GAS WARRANTYSERVICE AND LABOR RESPONSIBILITY CONDITIONS AND EXCEPTIONSPage Page 500 TENNESSEE WALTZ PARKWAY ASHLAND CITY, TN PHONE 1-800-433-2545 FAX