Caution
Draining the domestic hot water tank:
1. Shut off the domestic cold water inlet.
2. Open a hot water tap in the installation.
3. Open a valve on the safety unit.
4. When the water stops flowing, the domestic
hot water tank has been drained.
Caution
The pressure limiter device (safety valve or
safety unit) must be regularly operated in order
to remove limescale deposits and ensure that it
is not blocked.
A pressure limiter device must be fitted to a
discharge pipe.
As water may flow out of the discharge pipe on
the pressure limiter device, the pipe must be
kept open to the air, in a frost-free environment,
and at a continuous downward gradient.
A pressure reducer (not provided) is required
when the supply pressure exceeds 80% of the
pressure limiter device calibration and must be
located upstream of the appliance.
There must be no cut-off devices between the
pressure limiter device and the domestic hot
water tank.
To ascertain the type, specifications and
connection of the pressure limiter device, refer to
the chapter Connecting the Domestic Hot Water
Tank to the Drinking Water Mains in the
Installation and Service Manual.
Warning
Install the appliance in accordance with national
rules on electrical installation.
If the appliance is not wired in the factory, carry
out the wiring according to the wiring diagram
described in the chapter Electrical Connections in
the appliance's instructions manual.
This appliance must be connected to the
protective earth.
1 Safety
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