Ariston ARI POU-12 Use And Care Manual - Page 8

Browse online or download pdf Use And Care Manual for Water Heater Ariston ARI POU-12. Ariston ARI POU-12 19 pages. Electric water heater

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F. Temperature and Pressure Relief Valve

For protection against excessive pressures and temperatures in this

water heater, install temperature and pressure protective equipment

as required by local codes, but not less than a combination T&P valve

meeting the requirements for Relief Valves and Automatic Gas Shutoff

Devices for Hot Water Supply Systems, ANSI Z21.22B / CSA 4.4-M99 by

a nationally recognized testing laboratory that maintains periodic

inspection of production listed equipment and materials. This valve

must be marked with a maximum set pressure not to exceed the

marked maximum working pressure of the water heater. Install the

T&P valve into the top or side opening provided and marked for this

purpose on the water heater. The T&P valve must be plumbed down so

discharge can exit at least 6" above the structural floor. The relief line

cannot be in contact with any live electrical parts.

Figure 3 - T&P Relief Valve Operation

To avoid water damage or scalding due to relief valve operation:

•

Discharge line must be connected to relief valve outlet and

run to a safe place of disposal. Terminate the discharge line

in a manner that will prevent possibility of severe burns or

property damage should the relief valve discharge.

•

Discharge line must be as short as possible and the same size

as the valve discharge connection throughout its entire length.

•

Discharge line must pitch downward from the valve and

terminate at least 6" above the floor drain, making discharge

clearly visible.

•

The discharge line shall terminate plain, not threaded, with a

material serviceable for temperatures of 375

•

Do not pipe discharge to any location where freezing could

occur.

•

No valve may be installed between the relief valve and heater

or in the discharge line. Do not plug or place any obstruction

in the discharge line.

•

Test the operation of the relief valve after filling and

pressurizing the system by lifting the lever. Make sure the

valve discharges freely. If the valve fails to operate correctly,

immediately replace with a new properly rated relief valve.

•

Test T&P valve at least once annually to ensure the waterway

is clear. If valve does not operate, turn the heater "off" and call

a plumber immediately.

•

Take care whenever operating relief valve to avoid scalding

injury or property damage.

FAILURE TO COMPLY WITH THE ABOVE GUIDELINES COULD RESULT

IN FAILURE OF RELIEF VALVE OPERATION, RESULTING IN POSSIBILITY

OF SUBSTANTIAL PROPERTY DAMAGE, SEVERE PERSONAL INJURY,

OR DEATH.

The pressure relief rating of the relief valve MUST NOT EXCEED

150 PSI, and not exceed the maximum working pressure of the

water heater as marked on the rating plate. Failure to follow these

instructions could result in property damage, severe personal injury,

or death due to scalds.

lp-772 Rev. 000 Rel. 000 Date 3.17.21

Do not thread a cap or plug into the relief valve or block relief

valve outlet line under any circumstances! Explosion and property

damage, serious injury, or death may result.

RE-INSPECTION OF T&P RELIEF VALVES: T&P valves should be

inspected AT LEAST ONCE EVERY THREE YEARS, and replaced if

necessary, by a licensed plumbing contractor or qualified service

technician to ensure that the product has not been affected

by corrosive water conditions and to ensure that the valve and

discharge line have not been altered or tampered with illegally.

Certain naturally occuring conditions may corrode the valve and

its components over time, rendering the valve inoperative. Such

conditions can only be detected if the valve and its components

are physically removed and inspected. Do not attempt to conduct

an inspection on your own. Contact your plumbing contractor

for a re-inspection to assure continued safety.

FAILURE TO RE-INSPECT THE T&P VALVE AS DIRECTED COULD

RESULT IN UNSAFE TEMPERATURE AND/OR PRESSURE BUILD-

UP WHICH CAN RESULT IN PROPERTY DAMAGE, SERIOUS

PERSONAL INJURY, OR DEATH.

G. Scalding

An ASSE 1017 or ASSE 1070 temperature limiting or mixing valve

is recommended in installations servicing disabled or elderly

persons, or children. Mixing valves can reduce but do not eliminate

the risk of scalding.

To avoid scalding:

•

Set the water heater set point temperature as low as

possible.

•

Feel water before bathing or showering.

•

If thermostatic valves are required, use devices specifically

designed for such purpose. Install these devices in

accordance with instructions provided by the manufacturer.

Failure to install a temperature limiting or mixing valve and

follow these instructions could result in property damage, severe

personal injury, or death due to scalds.

This water heater can

deliver scalding water. Be

careful whenever using

F or greater.

hot water to avoid scalding

injury. Certain appliances

such as dishwashers and

automatic clothes washers

may

require

water temperatures. By

setting

on this heater to obtain

the

increased

temperature required by

these appliances you may

create the potential for

scald injury.

To protect against injury,

install a mixing valve in the

water system. This valve

will reduce point of use

discharge temperatures by

mixing cold and hot water

in branch supply lines.

Such valves are available

from your local plumbing

supplier.

increased

the

thermostat

water