Preface

Let us first offer two words of grateful appreciation. Thank You! We sincerely appreciate your business. Rheem also wishes to say thank you for "going solar". Solar water heating systems help to reduce our nation’s dependence on polluting fossil fuels, minimize the greenhouse gas emissions associated with conventional water heating and, very importantly, lower your monthly utility costs.

Your Rheem solar water heating system has been designed to meet exacting SRCC OG-300 certification requirements. The components found in your system have been selected for their proven reliability, longevity and performance in your specific region of the country.

1) INTRODUCTION

Solar water heating systems are climate and site specific appliances. Different types of solar systems are installed around the world in accordance with regional weather and water quality conditions. System performance varies as a function of the household hot water load, including daily showers, laundry and kitchen uses, average ground water and ambient air temperatures, the home’s roof pitch and orientation, and, of course, the seasonal intensity of solar radiation. These variables, some of which change from home to home on the same neighborhood street, will determine how much energy and money your Rheem system will save on an annual basis.

Your Rheem solar system is known as a "forced circulation" system because it utilizes a mechanical pump to efficiently circulate the Dow Chemical Dowfrost HD propylene glycol heat transfer fluid (HTF) throughout the system. The HTF protects the collector piping from freezing and inhibits scaling deposits that can reduce performance in "open-loop" systems utilizing potable water as the HTF. Proper application and maintenance of the HTF can protect your Rheem solar water heating system to minus 30° Fahrenheit.

This manual is intended as a basic solar water heating primer. Our goal is to familiarize you with the proper installation, operation, and maintenance of your

Rheem solar system. This system is required to be installed by properly licensed solar or plumbing contractors in accordance with SRCC Standard OG- 300 and all applicable national, state and local codes, ordinances and regulations governing solar water heating installations, as well as good trade practices. Failure to follow the procedures and practices described in this manual can void the manufacturer's warranty for specific component parts.

This manual covers installations utilizing two Rheem solar collectors with a single solar storage tank and also two tank systems that include a solar storage tank and a conventional water heater. For simplicity, the singular form will be used throughout this manual when referring to all of these components and system permutations. Frequent reference is made throughout this manual to specific component parts. The placement of each component can be seen in system schematic figures 16 and 17. A description of each component and its function is found in Section 10.

2)SYSTEM DESCRIPTION AND OPERATIONAL PRINCIPLE

The key components in the Rheem solar water heating system include the solar collector, solar storage tank with integral heat exchanger, circulation pump, differential thermostat, expansion tank, pressure gauge, mixing valve and the non-toxic propylene glycol heat transfer fluid (HTF).

The Rheem solar collector is the heart of the system. Simply stated, when the sun is shinning, heat energy is absorbed by the solar collector’s all copper absorber plate and tranferred to the HTF circulating through the solar collector. The system pump efficiently circulates this heated fluid through the collector piping and integral tank heat exchanger. As the HTF passes through the heat exchanger the heat in the fluid is transferred by conduction to the potable water in your solar storage tank. As this process is continuously repeated during the average sunny day the temperature in your solar storage tank rises.

When the solar collector absorber plate is approximately sixteen degrees hotter than the temperature in the bottom of your solar storage tank,

RS80-40BP, RS80-48BP, RS120-64BP specifications

The Rheem RS120-64BP, RS80-48BP, and RS80-40BP are part of Rheem's innovative line of commercial water heaters, specifically designed to provide reliable, energy-efficient hot water solutions for a variety of applications. These models are distinguished by their advanced technologies, robust construction, and user-friendly features, making them ideal for businesses, institutions, and other commercial settings.

One of the standout features of the Rheem RS series is its high recovery rate. This is crucial for commercial establishments that experience high demand for hot water, ensuring that there is always an adequate supply available, even during peak usage times. The RS120-64BP, for instance, is built to deliver a rapid recovery while maintaining excellent energy efficiency, which is a significant advantage for businesses looking to reduce operational costs.

In terms of technology, the Rheem RS models are equipped with advanced electronic controls that enhance performance monitoring and management. These controls allow for precise temperature adjustments and can result in energy conservation, further reducing costs. Additionally, many models feature a built-in diagnostic system that alerts users to any potential issues before they escalate into more significant problems, ensuring uninterrupted hot water supply.

Durability is another hallmark of the Rheem RS series. Constructed with high-quality materials, these water heaters are designed to withstand the rigors of commercial use. Their robust tanks are often lined with premium materials that resist corrosion, extending the lifespan of the unit and ensuring reliability over time.

These models also offer excellent insulation, which minimizes heat loss and boosts overall efficiency. The insulation reduces energy consumption, contributing to lower utility bills and a smaller carbon footprint, which is becoming increasingly important in today’s environmentally conscious market.

The RS80-48BP and RS80-40BP are also designed with convenience in mind. They typically come with easy-to-use connection points and plumbing options that simplify installation and integration into existing systems. These features make it easier for businesses to upgrade their hot water systems without major disruptions to operations.

In summary, the Rheem RS120-64BP, RS80-48BP, and RS80-40BP are exemplary models of commercial water heaters that combine efficiency, durability, and advanced technology. With their high recovery rates, intuitive electronic controls, and robust construction, these units are tailored to meet the demanding hot water needs of any commercial environment. Businesses can trust these models to deliver reliable performance while also contributing to energy savings.