depletion rate, and cause the formation of scale and other deposits on the heat exchanger's internal heat transfer surfaces.

Distilled or deionized water is required.

The HTF pH level must be maintained between 8 and 10 to minimize corrosion and glycol oxidation in the piping system.

5) SYSTEM START-UP PROCEDURES

Throughout the installation procedures outlined in Section 4 above, emphasis has been placed on the correct procedures for plumbing and wiring the components, checking for plumbing leaks, pressurizing the collector glycol loop, and eliminating any trapped air that can impact fluid quality and pump performance. Having completed these tasks it is time to start up your Rheem solar water heating system.

When the glycol loop has been fully charged and the pressure is around 25 psi (check the pressure gauge, No. 7), set the differential controller to the "Automatic" setting. This will activate your circulating pump. The controller allows you to set the "on" differential. Turn the red rotary switch inside the control housing to 12.

Adjust the valve settings in accordance with Section 6 below.

Table 4

Percent (volume) Glycol Concentration Required

Temperature F

For Freeze Protection

For Burst Protection

 

 

 

20

18%

12%

10

29

20

0

36

24

-10

42

28

 

 

 

-20

46

30

 

 

 

-30

50

33

 

 

 

-40

54

35

 

 

 

-50

57

35

 

 

 

-60

60

35

6) THREE MODES OF SYSTEM OPERATION

Both single and double tank Rheem systems are designed to accommodate three separate modes of operation. Your solar water heating system can, (1) provide 100% solar operation during good weather, or

(2)serve as a preheater to your electric water heater adding solar energy when and as available, or (3) completely bypass the solar collector loop and solar storage tank and run 100% on utility power during inclement weather.

Single Tank Operating Instructions:

6.1 100% Solar Operation:

Turn off the circuit breaker to your solar storage tank. If a water heater time switch has been installed, set the switch to the "off" position. If you have a mechanical timer remove the trippers from the face of the switch.

6.2 Solar Preheat

Leave the circuit breaker to your solar storage tank on and set the tank thermostat to the lowest acceptable temperature setting. The electric resistance heating elements will come on only when the tank temperature falls below the thermostatic set point.

If the solar heated water entering the tank is warmer than the thermostatic set point, the electric heating elements will not come on. If you have a water heater timer, you may preset the timer to turn the heating element on and off at specified times throughout the day if desired.

6.3 100% Utility Power

Leave the circuit breaker to your solar storage tank on and close the isolation ball valves in the collector loop (Nos. 5 and 10). In this mode of operation you must turn off the circulation pump. To turn the pump off

Table 5

Total Collector Loop Fluid Capacity In Gallons*

1 Collector System

4

Gallon

 

 

 

2 Collector System

5

Gallons

26

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Rheem RS80-48BP, RS120-64BP, RS80-40BP installation instructions System START-UP Procedures
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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.
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