Atlantic CHAUFFEO VS 500L Notice D'installation Et D'utilisation page 22

General Warnings
WATER CONNECTION
• A new safety unit, calibrated at 7 bar - 0.7 MPa (not supplied with
the water heater), 1'' in size and compliant with standard EN 1487
must be screwed directly onto the water heater's cold water inlet.
It must be protected from frost (minimum 4°C to 5°C).
• A pressure reducer (not supplied) is required when the feed pressure
is greater than 5 bar - 0.5 MPa. It must be fitted to the cold water
inlet, after the meter.
• Connect the safety unit to a drain pipe, kept in the open air, in an
environment not subject to frost (4°C to 5°C min.), on a continuous
downward gradient in order to drain the expansion water from
the heater or if draining the water heater.
• The safety unit's draining device must be switched on periodically
(at least once a month). This operation enables any limescale deposits
to be removed and to check that it is not blocked.
• To drain the appliance, turn it off, shut off the cold water supply,
then drain it using the safety unit handle having already turned
on a cold water valve.
ELECTRICAL CONNECTION
Before the protective cover is removed, make sure that the
power supply is switched off in order to prevent any risk of injury
or electrocution. The electrical installation must include a single-pole
cut-off unit upstream of the water heater (fuse holder, circuit brea-
ker with a contact opening distance of at least 3 mm, and 30 mA
differential circuit breaker). If the power cable becomes damaged,
it must be replaced by a cable with the same specifications or a special
assembly from the after-sales service.
Earthing is mandatory. A special terminal bearing the marking
is designed for this purpose. The instructions for this application
are available from customer services (the contact details can be found
at the end of the instructions).