A.O. Smith HYB-90N warranty T&P Valve and Pipe Insulation if supplied

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T&P Valve and Pipe Insulation (if supplied)

The temperature-pressure relief valve must be installed directly into the fitting of the water heater designed for the relief valve. Must terminate a maximum of 6 in. (15cm) above a floor drain or external to the building. In cold climates, it is recommended that the discharge pipe be terminated at an adequate drain inside the building. Be certain that no contact is made with any live electrical part. The discharge opening must not be blocked or reduced in size under any circumstances. Excessive length, over 30 ft. (9.14m), or use of more than four elbows can cause restriction and reduce the discharge capacity of the valve (see Figures 3 & 19).

No valve or other obstruction is to be placed between the relief valve and the tank. Do not connect tubing directly to discharge drain unless a 6 in. (15cm) air gap is provided. To prevent bodily injury, hazard to life, or property damage, the relief valve must be allowed to discharge water in quantities should circumstances demand. If the discharge pipe is not connected to a drain or other suitable means, the water flow may cause property damage.

The Discharge Pipe:

•Shall not be smaller in size than the outlet pipe size of the valve, or have any reducing couplings or other restrictions.

•Shall not be plugged or blocked.

•Shall be of material listed for hot water distribution.

•Shall be installed so as to allow complete drainage of both the temperature-pressure relief valve, and the discharge pipe.

•Shall terminate a maximum of 6 in. (15cm) above a floor drain or external to the building. In cold climates, it is recommended that the discharge line be terminated at an adequate drain inside the building.

•Shall not have any valve between the relief valve and tank.

The temperature-pressure relief valve must be manually operated at least once a year, (see Figure 17). Caution should be taken to ensure that (1) no one is in front of or around the outlet of the temperature-pressure relief valve discharge line, and (2) the water manually discharged will not cause any bodily injury or property damage because the water may be extremely hot.

FIGURE 17

If after manually operating the valve, it fails to completely reset and continues to release water, immediately close the cold water inlet to the water heater, follow the draining instructions, and replace the temperature-pressure relief valve with a new one.

T&P Valve and Pipe Insulation (if supplied)

Remove insulation for T&P valve and pipe connections from carton.

FIGURE 18

Fit pipe insulation over the incoming cold water line and the hot water line. Make sure that the insulation is against the top cover of the heater. Fit T&P valve insulation over valve. Make sure that the insulation does not interfere with the lever of the T&P valve.

Secure all insulation using tape.

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Contents For Your Safety POWER VENT GAS MODELSInstallation and Operating Manual 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 FrontAPPLIANCES IN CONFINED SPACES COMBUSTION AIR AND VENTILATIONAPPLIANCES IN UNCONFINED SPACES B. ALL AIR FROM OUTDOORS See Figures 12, 13 and CHEMICAL VAPOR CORROSION WATER PIPINGCLOSED WATER SYSTEMS THERMAL EXPANSIONHARD WATER TEMPERATURE-PRESSURE RELIEF VALVET&P Valve and Pipe Insulation if supplied GAS PIPING SEDIMENT TRAPSHIGH ALTITUDE INSTALLATIONS GAS LINE PURGINGFLOODING/FREEZING FILLING THE WATER HEATERPLANNING THE VENT SYSTEM If using 2 inch vent pipeVENT PIPE TERMINATION If using 3 inch vent pipe RODENT SCREEN INSTALL INTO ELBOW GROUND LEVEL OR MAXIMUM SNOW LINETERMINATION ELBOW ELBOW STRAPINSTALLATION OF VENT SYSTEM VENT TERMINAL INSTALLATION, SIDEWALLCONDENSATE CONDENSATION WARNINGVent terminals supplied with heater must be used SEQUENCE OF INSTALLATIONSINSTALLATION SEQUENCE INSTALLATION OF VENT SYSTEM, SIDEWALL INSTALLATION OF VERTICAL VENT SYSTEMVENT PIPE PREPARATION STEP B RECOMMENDED BRUSH* SIZE FOR PRIMER AND CEMENT APPLICATIONSSTEP A U.S. POWER VENT STEP ESTEP F STEP G CONNECTION TO VENT PIPEVENT HOODS MAY BE EXTREMELY HOT DURING OPERATION ELECTRICAL CONNECTIONS CALIBRATIONFIGURE 33a “OFF”, “up”OPERATING INSTRUCTIONS DISPLAY PANELNumeric Display CAUTION LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICINGCONTROLS. WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUSLIGHTING INSTRUCTIONS FOR YOUR SAFETY READ BEFORE LIGHTINGOPERATING INSTRUCTIONS TO TURN OFF GAS TO APPLIANCEDESCRIPTION HEAT CYCLE DEFINITIONSSTATE TEMPERATURE REGULATION UNIQUE HYBRID FEATURES Temperature ProbesWater Circulation Pump Line Voltage Monitor CONSTANT OUTPUT TEMPERATURE CONTROL Detection of Failure to Maintain Desired Constant TemperatureSTART UP CONDITIONS OPERATIONAL CONDITIONSMAINTENANCE HOUSEKEEPINGVENTING SYSTEM INSPECTION BURNER OPERATION AND INSPECTIONANODE ROD REPLACEMENT CLEANING THE INLET WATER FILTERTEMPERATURE-PRESSURE RELIEF VALVE OPERATION MOTORSCLEANING THE HEAT ENGINE FLUSHING THE HEAT EXCHANGER LIME BUILD- UPFAULT INDICATION AND ERROR CODES DRAINING THE TANKDIAGNOSTIC DISPLAY DiagnosticCode and DisplayedFault LockoutCause RemedyFault LockoutCode DescriptionFault TROUBLESHOOTING WHEN THE TAP IS OPENED Check if there is any error code onb.The unit display is an error code system installed, or there is aSERVICE LEAKAGE CHECKPOINTSA Baffle, Flue B Hot Water Outlet Nipple w/ Anode, Heat Trap PARTS IDENTIFICATIONITEM # AB C DEF G T SH R I Q P REPLACEMENT PARTS DESCRIPTION KIT #LIMITED RESIDENTIAL GAS WARRANTY SERVICE AND LABOR RESPONSIBILITYCLAIM PROCEDURE CONDITIONS AND EXCEPTIONSPage Page 500 TENNESSEE WALTZ PARKWAY ASHLAND CITY, TN PHONE 1-800-433-2545 FAX
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