Domestic wa
ter
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 gradi
ent.
To drain the domestic hot water circuit, refer to the dedicated chapter in the
Maintenance section.
Hydraulics
Caution
Respect the minimum and maximum water pressure and tem
perature to ensure the appliance operates correctly. See
chapter on Technical Specifications.
Installation
Important
Allow sufficient space around the appliance to ensure ade
quate accessibility to the appliance to facilitate maintenance.
See "Installation" chapter.
1.2
General instructions
The system must satisfy each point in the rules in force in the country that
govern works and interventions in individual homes, blocks of flats or other
buildings.
Only qualified professionals are authorised to work on the appliance and
the heating installation. They must respect prevailing local and national
regulations during fitting, installation and maintenance of the installation.
Commissioning must be performed by a qualified professional.
1.3
Electrical safety
Before making any electrical connections, earth the appliance in
accordance with prevailing standards.
Danger
Danger of electric shock: the length of the conductors between the
traction arrester device and the terminal blocks must be such that
the active conductors are put under tension before the earth
conductor.
Only qualified professionals may carry out electrical connections, always
with the power off.
Separate the very low voltage cables from the 230/400 V power supply
cables.
1 Safety instructions and recommendations
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