15
Power Switch “S1”
Mode of Operation
Double power switch positions 5 / 6 / 7
Single power switch positions 1/ 2 / 3 / 4
Boiler mode switch positions 8 / 9 / 0
The power switch is set by the manufacturer in position 5.
Double power
Depending on the home installation, the following connection variations are possible:
Refer to the connection types recommended for double power (page VI)
• Variant A, (page V, diagram 15):
If no low-tariff electricity is to be used, do not remove bridge between L1 and L1T.
• Variant B, (page V, diagram 15.1)
Connect the output of the autotimer (delivered by the electricity provider) with L1 and L1T.
• Variant C, (page V, diagram 15.2)
Connect switched phase L1T (connection for low-tariff power) to L1T terminal.
• Variant D, (page V, diagram 15.3)
Connect switched phase L1 to terminal L1 and L1T.
According to the duration of the off-peak period of either 8 or 4 hours, and the
associated loads (refer to connection types on page V), set the power switch “S1”
to the correct positions, 5 /6 / 7, of the double power set-up.
Each further heating process must be started by pushing the button “fast-heating” .
Electrical Connections
Danger of electric shock!
The power switch “S1” may only be activated in an unpowered state!!
Remove lower cap by taking the screws out (page V, diagram 15, 15.1, 15.2, 15.3).
Lead cable through the cable gland and cord grip and connect, then tighten the cable gland and cord grip (page IV, diagram
12-13).
Check that the system is suitable for the maximum power absorbed by the water heater (please refer to the data plate) and that
the cross-section of the electrical connection cables is suitable, and no less than 1.5 mm
2
.
Operating mode
Set the power switch “S1” to the correct operating mode on the electronic board.
Set the desired load according to the connection examples.
