3 Installation

3.11Check and adjust the CO2-value

3.10.3 Connect the mains voltage

The device is delivered without power cable and main switch.

Remark

In order to supply voltage to the device, connect the device to the mains voltage using a permanent electrical connection. Place a double pole main switch with a contact opening of min. 3 mm between this permanent connection and the device. The power cable shall have a core of min. 3 x 1.0 mm².

Warning

Keep the device electrically isolated until you are ready to start it up.

1.Connect phase (L), zero (Z) and earth () of the power cable to the connector (C).

2.Mount the power cable into the strain relief (D).

3.Connect the power cable to the main switch.

4.Remount the cover plate.

3.10.4Isolating transformer

An isolating transformer is used when a ‘floating zero’ is present. Consult the mounting instructions delivered with the isolating transformer (contact the supplier for the correct isolating transformer).

Remark

Fill the device before starting up the device and/or checking the CO2-value (5 “Fill”).

Caution

Checking the CO2-value is obligatory when starting up the device for the first time.

Remark

You obviously need a CO2-gauge for checking the CO2-value.

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Instruction manual TWI 35-130 G/TWI 45-190 G

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A.O. Smith TWI 45-190, TWI 35-130 Check and adjust the CO2-value Connect the mains voltage, Isolating transformer

TWI 35-130, TWI 45-190 specifications

A.O. Smith TWI 35-130 and TWI 45-190 are high-efficiency water heaters designed to meet the diverse needs of residential and commercial applications. These units are part of A.O. Smith’s extensive product line, known for reliability, durability, and energy efficiency.

The TWI 35-130 model is a 35-gallon tank water heater, offering a first-hour delivery of 130 gallons. This capacity makes it suitable for households with moderate hot water demands. It features a compact design, allowing for easy installation in tighter spaces, which is ideal for urban settings. The unit operates on natural gas, promoting energy efficiency while reducing operational costs.

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