7Electrical connections

CAUTION

CAUTION

The electrical connections to the boiler must be made in accordance with all applicable local codes and the latest revision of the National Electrical Code, ANSI/NFPA-70. Installations should also conform with CSA C22.1 Canadian Electrical Code Part 1 if installed in Canada.

Devices such as, outdoor sensor, room thermostat or temperature control, temperature sensor or thermostat and an external pump are all connected to the internal connection terminal. The connection terminal is situated behind the Control Tower.

Connecting incoming power

Install a 120V main switch next to the boiler as service main switch of the boiler. Lead the cable through the back part of the boiler using a strain relief and lead the cable through the cable supports to the Control Tower.

Connect a power supply cable to the cable harness terminal strip that connects to both the power switch on the front of the Control Tower and the terminal strip with positions 1, 2, and 3 on the inside of the Control Tower.

The boiler must be electrically grounded in accordance with local codes, or in absence of local codes, with the National Electrical Code, ANSI/INFPA 70 and/or the CSA C22.1, Electrical Code.

RISK OF ELECTRIC SHOCK.

Once the main power supply is on then there is 120V on terminals 1 to 12 if the main switch next to the boiler is switched on.

-No changes may be made to the wiring of the boiler;

-All connections should be designed in accordance with the applicable regulations;

i NOTICE

The Rinnai room thermostat and controls must be connected to their allocated

 

connections. All other types or makes of room thermostats or controls which

 

are used must have a Volt free contact.

When using an on/off thermostat or control, it is possible that an anticipating resistance must be calibrated in order to prevent too high temperature fluctuations. As a standard rule this means mercury thermostats. This resistance wire is present in the Control Tower and must be connected to clamps 23 and 27. The anticipating resistance in the room thermostat has to be set at 0.11 A.

For more detailed questions regarding the components which are not supplied, the distributor should be contacted.

Connection terminal E-Series

120 V~

120 V~

 

120 V~

120 V~

 

8U352200

 

Cylinder connection

Outside

Bus

Room

External

24 V~

Power supply

External pump

Ext.controller

N

L

three-way valve

DHW

sensor

Controller

therm.

safety

100 mA

 

 

N

L

 

CH

DHW N

sensor

 

 

On / Off

contact

 

 

4

5

6

7

10

11

 

 

 

 

 

 

 

 

main power supply

120 Volts for

external pump

 

120 Volts for external control

120 Volts

 

 

 

internal three-way valve motor and DHW sensor

ARV12 outdoor sensor

Bus room thermostat

On/off thermostat or control (Volt free)

External safety contact

24 Volts maximum 100 mA

! CAUTION

CAUTION

Make sure that the power consumption of each of the terminals

 

4-5-6, 7-8-9 and10-11 does not exceed 230W or 2 Amp.

 

 

Connection terminal

figure 19

Installation & Servicing Instructions Rinnai E-Series

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Rinnai E75CN, E110CP, E110CN Electrical connections, Connecting incoming power, Are used must have a Volt free contact

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.