A.O. Smith GDVT TEMPERATURE-PRESSURE Relief Valve, Valve and Pipe Insulation if Supplied

HOT WATER

OUTLET

UNION

3/4” SWEAT

FITTING

DRAIN VALVE

FLOOR DRAIN

FIGURE 5

COLD WATER

INTLET

SHUTOFF

VALVE

UNION

3/4” SWEAT FITTING

TEMPERATURE AND PRESSURE RELIEF VALVE

DISCHARGE PIPE (DO NOT CAP OR PLUG)

DRAIN PAN

6” MAXIMUM AIR GAP

FIGURE 6

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 insula- tion does not interfere with the lever of the T & P valve.

Secure all insulation using tape.

TEMPERATURE-PRESSURE RELIEF VALVE

Figure 5 shows the typical attachment of the water piping to the water heater. The water heater is equipped with 3/4“ NPT water connections.

NOTE: If using copper tubing, solder tubing to an adapter before attaching the adapter to the cold water inlet connection. Do not solder the cold water supply line directly to the cold water inlet. It will harm the dip tube and damage the tank.

T & P VALVE AND PIPE INSULATION (IF SUPPLIED)

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

This heater is provided with a properly certified combination temperature - pressure relief valve by the manufacturer.

The valve is certified by a nationally recognized testing labora- tory that maintains periodic inspection of production of listed equipment of materials as meeting the requirements for Relief Valves for Hot Water Supply Systems, ANSI Z21.22 • CSA 4.4, and the code requirements of ASME.

If replaced, the valve must meet the requirements of local codes, but not less than a combination temperature and pressure relief valve certified as indicated in the above paragraph.

The valve must be marked with a maximum set pressure not to ex- ceed the marked hydrostatic working pressure of the water heater (150 psi = 1,035 kPa) and a discharge capacity not less than the water heater input rate as shown on the model rating plate.

For safe operation of the water heater, the relief valve must not be removed from its designated opening nor plugged.

The temperature-pressure relief valve must be installed directly into the fitting of the water heater designed for the relief valve. Position the valve downward and provide tubing so that any discharge will exit only within 6 in. (152mm) above, or at any

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