Rheem AP15121-1 User Manual download pdf (Page 12)

The water heater is equipped with a

temperature limiting control (ECO)

that is located above the upper heating

element in contact with the tank

surface. If for any reason the water

temperature becomes excessively

high, the temperature limiting control

(ECO) breaks the power circuit to

the heating element. Once the control

opens, it must be reset manually.

CAUTION: The cause of the high

temperature condition must be investigated

by qualified service technician and

corrective action must be taken before

placing the water heater in service again.

To reset the temperature limiting control:

(Refer to Illustration on page 21):

Turn off the power to the water

heater.

Remove the plastic housing.

Remove the jacket access top

panel and insulation.

Press the red RESET button.

Replace the insulation and jacket

access panel before turning on

the power to the water heater.

DANGER: There is a hot

water scald potential if the

thermostat is set too high.

Households with small

children, disabled, or elderly

persons may require a 120°F

or lower thermostat setting to

prevent contact with

HOT water.

Water Temperature Setting

The temperature of the water in the

water heater can be regulated by

pushing the up or down arrow on

the keypad located behind the access

panel.

Safety and energy conservation

are factors to be considered when

selecting the water temperature setting

of the water heater. The lower the

temperature setting, the greater the

savings in energy and operating costs.

To comply with safety regulations the

temperature is factory set at 122°F or

less where local codes require. This is

the recommended starting point.

Water temperatures above 125°F can

cause severe burns or death from

scalding. Be sure to read and follow

the warnings outlined in this manual

and on the label on the water heater.

This label is located on the water

heater near the electronic control

access panel.

Mixing valves for reducing point

of use water temperature by mixing

hot and cold water in branch water

lines are available. Contact a licensed

plumber or the local plumbing

authority for further information.

The chart on the next page may be

used as a guide in determining the

proper water temperature for your

home.

Safety Precautions

Do turn off power to water heater

if it has been subjected to over

heating, fire, flood, physical

damage.

Do Not turn on water heater

unless it is filled with water.

Do Not turn on water heater if

cold water supply shut-off valve

is closed.

If there is any difficulty in

understanding or following the

Operating Instructions or the

Care and Cleaning section, it is

recommended that a qualified

person or serviceman perform the

work.

Operating the water heater.

CAUTION: Hydrogen gas can be produced in a hot water system served by this water heater that has not been used for a

long period of time (generally two weeks or more). HYDROGEN GAS IS EXTREMELY FLAMMABLE!! To dissipate such

gas and to reduce risk of injury, it is recommended that the hot water faucet be opened for several minutes at the kitchen sink

before using any electrical appliance connected to the hot water system. If hydrogen is present, there will be an unusual sound

such as air escaping through the pipe as the water begins to flow. Do not smoke or use an open flame near the faucet at the

time it is open.

Safety Controls

WARNING: If the water

heater has been subjected to

flood, fire, or physical damage,

turn off power and water to

the water heater.

Do not operate the water

heater again until it has

been thoroughly checked

by qualified service

personnel.

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Rheem AP15121-1 User Manual Page 12

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