6Connecting the boiler

The boiler has the following connection pipes;

-The central heating circuit pipes.

These must connected to the plumbing kit by means of adapter fittings.

See further chapter 6.1;

-The gas supply pipe.

It is provided with a 3/4" male thread into which the tail piece of the gas valve can be screwed. See further chapter 6.4;

-Cold and hot water pipes for domestic hot water (DHW).

These consist of 3/4" (15 mm) copper pipe and can be connected to the installation by means of 1/2" M-NPT adapter fittings. See further chapter 6.5;

-The condensation drain pipe.

It consists of an oval 1" (22 mm) plastic pipe. The drain pipe can be connected to this by means of an open connection. If the open connection is fitted in a different location, then the pipe can be lengthened by means of a 1 1/4" (32 mm) PVC sleeve. See further chapter 6.6;

-The vent system and air supply system.

It consists of a concentric connection 3"/5" (80/125 mm). The boiler can be converted to a twin pipe connection that will accept 80mm flue and intake air or with the use of the included adapters 3” PVC/CPVC flue and intake. See further chapter 6.7.

i NOTICE

The pipe to be connected to the boiler must be cleaned before connecting in

order to prevent dirt from entering and damaging the boiler.

6.1 Central heating system

i i i

i

 

Connect the central heating system according to its instructions.

 

The boiler pipes can be connected to the installation by means of compression fittings.

 

Reducers should be used for connecting to thick-walled pipe (welded or threaded).

NOTICE

When removing the plastic sealing caps from the pipes, dirty testing water

may drain from the boiler.

NOTICE

A Plumbing Kit must be fitted to the boiler.

 

 

The boiler, when used in connection with a refrigeration system, must

NOTICE

be installed so the chilled medium is piped in parallel with the boiler with

appropriate valves to prevent the chilled medium from entering the boiler.

 

The boiler piping system of a hot water boiler connected to heating coils

NOTICE

located in air handling units where they may be exposed to refrigerated air

circulation must be equipped with flow control valves or other automatic

 

means to prevent gravity circulation of the boiler water during the cooling

 

cycle.

Installation & Servicing Instructions Rinnai E-Series

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Rinnai E75CN, E110CP, E110CN, E75CP user manual Connecting the boiler, Central heating system

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.