A.O. Smith TWI 45-190 Check and adjust the CO2-value, Connect the mains voltage, Installation

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.

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