Never replace the pressure limiter when using a thermostatic valve.
Never use the shut-off valve in the cold water supply (23) to reduce the ﬂ ow rate.
1 heating system
2 High limit safety cut-out
3 Safety pressure limiter
The protection level IP 25 (hoseproof) is only assured if the cable grommet is ﬁ tted correctly (
and if the cable sheath is sealed correctly.
Connect the equipment to earth.
For supply cables > 6 mm², increase the hole in the cable grommet.
Completing the installation
Click the lower part of the back panel (
Open and close all connected taps several times, until all air
has been vented from the pipework and the equipment.
Air - see "2.3 Important information".
The instantaneous water heater is delivered with the safety
pressure limiter triggered (press the reset button).
Check the ﬁ rm seat of the device cap on the back panel.
Optional displays of the "trafﬁ c light" indicators (
illuminates in case of faults
yellow illuminates when the equipment is heating water
green ﬂ ashing - equipment is supplied with mains power
Explain the equipment function to the user and familiarise the user
with its operation.
3) into place.
(only by a qualiﬁ ed contractor)
9), see also