A.O. Smith del and del warranty Typical Piping Connections, Temperature and Pressure Relief Valve

Models: del and del

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TYPICAL PIPING CONNECTIONS

This page shows typical water heater installations by model designations.

DUAL ELEMENTS HEATER

SINGLE ELEMENT HEATER

INSTALL SUITABLE DRAIN PANS UNDER HEATERS TO

PREVENT DAMAGE DUE TO LEAKAGE. REFER TO WATER

HEATER LOCATION ON PAGE 2.

INSTALL

THERMAL

INSTALL VACUUM RELIEF

EXPANSION TANK IF

IN COLD WATER INLET

CHECK

VALVE

OR

LINE AS REQUIRED BY

PRESSURE REDUCING

LOCAL CODES.

VALVE IS USED

IN

 

SUPPLY LINE.

 

 

 

 

 

 

OVER CURRENT PROTECTION MUST BE SUPPLIED IN WATER HEATER CIRCUIT. CONSULT LOCAL CODE OR NEC-1984 FOR PROPER INSTALLATION.

* INSTALL IN ACCORDANCE WITH ALL LOCAL CODES.

TEMPERATURE AND PRESSURE RELIEF VALVE

CAUTION

TO REDUCE THE RISK OF EXCESSIVE PRESSURES AND TEMPERATURES IN THIS WATER HEATER, INSTALL TEMPERATURE AND PRESSURE PROTECTIVE EQUIPMENT REQUIRED BY LOCAL CODES BUT NOT LESS THAN A COMBINATION TEMPERATURE AND PRESSURE RELIEF VALVE CERTIFIED BY A NATIONALLY RECOGNIZED TESTING LABORATORY THAT MAINTAINS PERIODIC INSPECTION OF PRODUCTION OF LISTED EQUIPMENT OR MATERIALS, AS MEETING THE REQUIREMENTS FOR RELIEF VALVE DEVICES FOR HOT WATER SUPPLY SYSTEMS. (ANSI Z21.22.)

This valve must be marked with a maximum set pressure not to exceed the marked maximum working pressure of the water heater. Install the valve into an opening provided and marked for this purpose in the water heater, and orient it or provide tubing so

that any discharge from the valve will exit only within 6 inches above, or at any distance below, the structural floor and cannot contact any live electrical part. THE DISCHARGE OPENING MUST NOT BE BLOCKED OR REDUCED IN SIZE UNDER ANY CIRCUMSTANCES.

DUAL ELEMENTSINGLE ELEMENT

RATING PLATERATING PLATE

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A.O. Smith del and del warranty Typical Piping Connections, Temperature and Pressure Relief Valve

del and del specifications

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