i i

NOTICE

NOTICE

The boiler has a self-adjusting and self-protecting control system for the load and the pump capacity. By this means the temperature difference between the supply and return water is checked and controlled.

If the installation resistance is over the stated value; the load will be adjusted until an acceptable temperature difference between supply and return water has been obtained. If, after this, the temperature difference is still not acceptable then the boiler will switch off and wait until an acceptable temperature has arisen.

If an unacceptable temperature is detected, the control will repeatedly try to achieve water flow over the boiler. If not the boiler will switch off.

The electrical side of an external circulation pump (fig. 6, pos. 8) can be connected to the Control Tower. This pump thus switches simultaneously to the boiler pump. The maximum absorbed current consumption of the external circulation pump may not exceed 120V, 2 Amp. If a pump with a larger current draw is required an isolation relay must be used. See the Rinnai Boiler Applications Manual for further information. The extra external pump must be selected according the installation resistance and required flow.

As standard the boiler is provided with a water filter in the return pipe of the boiler, so that debris of the central heating water is prevented from affecting the boiler.

When using more than one boiler in an installation please refer to the cascade installation instructions.

The boiler is designed to be used on pressurized heating systems only.

14

 

 

 

 

 

32.3

 

12

 

 

 

 

 

27.7

 

10

 

 

 

 

 

23.0

 

8

 

 

 

 

 

18.5

head

PSI

 

 

 

 

 

 

6

 

 

 

 

 

13.8

of

 

 

 

 

 

Feet

 

 

 

 

 

 

 

4

 

 

 

 

 

9.2

 

2

 

 

 

 

 

4.6

 

0

 

 

 

 

 

0

 

0

2

4

6

8

10

12

 

 

 

 

Q [gallons/min]

 

 

Series-

UPS 20-48

 

UPS 20-58

 

Resistance E75C

Resistance E110C

 

UPS 20-48

 

UPS 20-58

 

Resistance OSS1

Resistance OSS2

 

 

25%

 

100%

 

 

 

 

 

pump index lines

 

 

 

 

graph 1

Installation & Servicing Instructions Rinnai E

 

 

 

 

 

 

 

19

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Image 19
Rinnai E75CP, E110CP, E75CN, E110CN user manual Installation & Servicing Instructions Rinnai E

E75CP, E110CN, E75CN, E110CP specifications

Rinnai is a leading name in the heating industry, recognized for producing highly efficient and reliable tankless water heaters. Among their popular models are the Rinnai E75CN, E75CP, E110CP, and E110CN, each designed to cater to various household needs and preferences.

The Rinnai E75CN and E75CP are both remarkable for their compact size and impressive heating capabilities. The E75CN is a natural gas model, while the E75CP runs on propane. These units are designed to deliver a maximum flow rate of up to 7.5 gallons per minute, ensuring that multiple fixtures can be used simultaneously without a dip in performance.

Both models incorporate advanced temperature control technology, allowing users to set their desired water temperature with precision. The units feature a durable heat exchanger, constructed from high-grade stainless steel, which not only promotes longevity but also helps in preventing corrosion. Additionally, they come with built-in safety features, such as freeze protection and an overheat cut-off system, ensuring safe operation in varying conditions.

Moving on to the Rinnai E110CP and E110CN, these tankless water heaters are designed for larger households with higher hot water demands. The E110CP operates on propane, while the E110CN utilizes natural gas. These units deliver a maximum flow rate of up to 11 gallons per minute, making them ideal for simultaneous use in multiple bathrooms, kitchens, and laundry rooms.

The E110 models showcase Rinnai's Smart Technology, which optimizes energy consumption by adjusting the heating output based on the demand. This not only maximizes efficiency but also significantly reduces energy costs. They are equipped with digital controls and diagnostics, providing users with real-time information and the ability to troubleshoot easily if any issues arise.

In terms of installation, all four models are designed for versatility. They can be installed indoors or outdoors, giving homeowners flexibility based on their space and preference. With their compact design, these units require less space compared to traditional tank heaters, making them a suitable choice for modern homes.

Overall, Rinnai's E75CN, E75CP, E110PC, and E110CN models represent cutting-edge technology in tankless water heating. Their efficiency, safety features, and advanced technology make them an excellent choice for homeowners looking to upgrade their hot water systems. With Rinnai, users can enjoy the convenience of continuous hot water without sacrificing energy efficiency.