Water Temperature Setting

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.

The temperature of the water in the water heater can be regulated by setting the temperature dial of the adjustable surface mounted thermostat(s) located behind the jacket access panel(s).

Dual element heaters have two thermostats.

Safety and energy conservation are factors to be considered when selecting the water temperature setting of the water heater’s thermostat(s). The lower the temperature setting, the greater the savings in energy and operating costs.

To comply with safety regulations the thermostat(s) are factory set at 120°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 thermostat 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 below may be used as a guide in determining the proper water temperature for your home.

Safety Instructions Installation Instructions Operating Instructions

Time/Temperature Relationship in Scalds

Temperature	Time To Produce a Serious Burn
120°F	More than 5 minutes
125°F	11/2 to 2 minutes
130°F	About 30 seconds
135°F	About 10 seconds
140°F	Less than 5 seconds
145°F	Less than 3 seconds
150°F	About 11/2 seconds
155°F	About 1 second

Table courtesy of Shriners Burn Institute

Care and Cleaning

Reset button	T	R
	E	E
	S		S
	E		S
	R	T	E
		T
Thermostat
dial pointer
	150°F		90°F
	(66°C)		(32°C)
	125°F(52°C)
	TURN OFF
	POWER
	BEFORE
Thermostat	SERVICING
Thermostat
protective
cover

Type 59T thermostat and protective cover.

If adjustment is necessary…

Turn off the power to the water heater.

Remove the jacket access panel(s) and insulation exposing the thermostat(s).

The thermostat protective cover(s) should not be removed.

Using a small screwdriver, set the thermostat(s) dial pointer(s) to the desired temperature.

Replace the insulation and jacket access panel(s). Turn on the power to the water heater.

Troubleshooting Tips Customer Service

HE Series, PE Series, GE Series, SE Series specifications

Rheem, a prominent name in heating and cooling solutions, offers a variety of water heating systems that cater to different needs and preferences. Among its popular product lines are the SE Series, GE Series, PE Series, and HE Series. Each series boasts unique features, advanced technologies, and distinct characteristics aimed at enhancing efficiency and user satisfaction.

The Rheem SE Series is renowned for its robust performance and reliability. This series encompasses energy-efficient models designed to provide optimal hot water output while minimizing energy consumption. Key features of the SE Series include a durable construction that guarantees longevity, as well as advanced temperature controls that enhance user convenience. The series often includes smart technology options that allow users to monitor energy usage, making it ideal for tech-savvy homeowners looking for efficiency without compromising on comfort.

Next is the GE Series, which aligns modern design with robust technology. The GE Series is particularly noted for its compact size, making it suitable for installations in confined spaces. This series also emphasizes energy efficiency, often featuring heat pump technology that significantly reduces electricity consumption while providing excellent heating performance. GE Series units come equipped with Wi-Fi connectivity, allowing for remote management and monitoring, which is increasingly important in a digitally connected world.

The Rheem PE Series stands out for its environmentally friendly approach. Utilizing advanced heat pump technology, this series not only provides efficient water heating but also contributes to reduced greenhouse gas emissions. The PE Series is notable for its low operational costs, especially in moderate climates, as it harnesses ambient heat to heat water. Additionally, its user-friendly digital interface simplifies temperature adjustments and monitoring, ensuring that users can enjoy comfortable water temperatures effortlessly.

Lastly, the HE Series combines high performance with exceptional energy efficiency. This series is designed for maximum output, ideal for larger households that require a substantial amount of hot water. HE Series models often incorporate cutting-edge insulation techniques, minimizing heat loss and enhancing overall efficiency. Additionally, these units are engineered for quiet operation, ensuring that they don’t disrupt daily life. With features like advanced diagnostic tools and user-friendly controls, the HE Series stands out as a reliable option for families seeking quality and performance in their water heating solutions.

In summary, Rheem’s SE, GE, PE, and HE Series water heaters offer diverse options, each with particular strengths suited for different user needs. Whether it's energy efficiency, sleek design, environmentally friendly technology, or high performance, Rheem delivers innovative solutions in the water heating market.