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4 Installation
4.1
Regulations and notes
V
❏ The electrical connection must only be carried out by qualified personnel.
❏ The choice of cable, the installation and the electrical connection must con-
form to the requirements of VDE 0100 "Regulations on the installation of
power circuits with nominal voltages below 1000 V" or the appropriate local
regulations.
❏ Ensure that the instrument is completely isolated from the mains supply
before carrying out work where live components may be touched.
❏ Earth the instrument at terminal PE to the protective earth. This cable must
have at least the same cross-section as the supply cable. Earthing cables
must be wired in star configuration, to a common earthing point which is
connected to the protective earth of the supply. Do not loop the earthing
cables, i.e. do not run them from one instrument to another.
❏ Apart from faulty installation, incorrect settings on the thermostat may also
affect the proper functioning of the subsequent process or lead to damage.
Adjustment should therefore only be made by qualified personnel. Please
observe the corresponding safety regulations in this matter.
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