Reliant FVIR GAS WATER HEATER Gebrauchs- und Pflegeanleitung PDF herunterladen (Seite 17)

The Discharge Line:

• Must not be smaller than the pipe size of the relief

valve or have any reducing coupling installed in the

discharge line.

• Must not be capped, blocked, plugged or contain any

valve between the relief valve and the end of the dis-

charge line.

• Must terminate a maximum of six inches 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.

• Must be capable of withstanding 250°F (121°C) without

distortion.

• Must be installed to allow complete drainage of both

the valve and discharge line.

T&P Relief Valve and Pipe Insulation (Some Models)

1. Locate the temperature and pressure relief valve on

the water heater (also known as a T&P relief valve).

See Figure 18.

2. Locate the slit running the length of the T&P relief

valve insulation.

3. Spread the slit open and fit the insulation over the T&P

relief valve. See Figure 19. Apply gentle pressure to

the insulation to ensure that it is fully seated on the

T&P Relief Valve. Once seated, secure the insulation

with duct tape.

IMPORTANT: The insulation or tape should not block

or cover the T&P relief valve drain opening. Also, the

insulation or tape should not block or hinder access to

the manual relief lever (Figure 19).

4. Locate the hot water (outlet) & cold water (inlet) pipes

to the water heater.

5. Locate the slit running the length of a section of pipe

insulation.

6. Spread the slit open and slip the insulation over the

cold water (inlet) pipe. Apply gentle pressure along the

length of the insulation to ensure that it is fully seated

around the pipe. Also, ensure that the base of the

insulation is flush with the water heater. Once seated,

secure the insulation with duct tape.

7. Repeat steps 5 and 6 for the hot water (outlet) pipe.

8. Add additional sections of pipe insulation as needed.

T&P RELIEF VALVE

MANUAL RELIEF LEVER

T&P RELIEF VALVE INSULATION

FIGURE 19.

Temperature and Pressure Relief Valve

Explosion Harzard

• Temperature-pressure relief

valve must comply with ANSI

Z21.22-CSA 4.4 and ASME

code.

• Properly sized temperature-

pressure relief valve must be

installed in opening provided.

• Can result in overheating

and excessive tank pressure.

• Can cause serious injury or

death.

6” MAXIMUM

AIR GAP

METAL

DRAIN PAN

DISCHARGE PIPE

(DO NOT CAP OR PLUG)

TEMPERATURE AND PRESSURE (T&P)

DRAIN LINE

3/4” ID

MINIMUM

DRAIN

1” MINIMUM

FIGURE 18.

For protection against excessive pressures and

temperatures, a temperature and pressure relief valve must

be installed in the opening marked “T & P RELIEF VALVE”

(see Figure 17). This valve must be design certified by

a nationally recognized testing laboratory that maintains

periodic inspection of the production of listed equipment or

materials as meeting the requirements for Relief Valves for

Hot Water Supply Systems, ANSI Z21.22. The function of

the temperature and pressure relief valve is to discharge

water in large quantities in the event of excessive

temperature or pressure developing in the water heater.

The valve’s relief pressure must not exceed the working

pressure of the water heater as stated on the rating plate.

IMPORTANT: Only a new temperature and pressure relief

valve should be used with your water heater. Do not use an

old or existing valve as it may be damaged or not adequate

for the working pressure of the new water heater. Do not

place any valve between the relief valve and the tank.

The Temperature & Pressure Relief Valve:

• Must not be in contact with any electrical part.

• Must be connected to an adequate discharge line.

• Must not be rated higher than the working pressure

shown on the rating plate of the water heater.

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