Mains Power - A.O. Smith CAWH 8-455-6 Installation, User And Service Manual

EN
8.5.2
n
46
The mains power connections have to be connected to the terminal block, refer to
Structure of the water heater (see 7.1).
Fig. Terminal block

Mains power

Note
The water heater is supplied without a power cable and isolator.
Use a power cable with wires of a suitable diameter based on the cable length and the
current.
Note
Select and install an overvoltage category III, all–pole isolator with a contact gap of at
least 3 mm. The all–pole isolator must be incorporated in the fixed wiring in accordance
with the wiring rules.
Note
This isolator must be installed in the same room as the appliance, suitably marked and
no more than 1 meter away from the water heater.
Connect the water heater to the mains power supply:
1. Pull the power cable through the cable gland.
2. Connect the live (L1, L2 and L3) and the neutral (N) and the earth (A) core of the
power cable to the terminals of the terminal block.
3. Connect the power cable to the isolator.
4. Secure the power cable in the cable gland.
1. Terminal block
1 2
2. Cable glands
Installation, Maintenance and Service part