9.2.3. HST Model
a) CH flow ¾ ‘’ (hot)
b) Boiler supply water (hot)
c) Gas inlet ¾’’
d) Boiler return (cold)
e) Installation Filling Line ½ ‘’
f) CH return ¾’’ (cold)
Figure 13
9.3. Electrical Connection
Electrical installation should be made according to the national and local instructions. The boiler must
be earthed and a standard 230 V AC – 50 Hz supply is required.
CAUTION: Disconnect power supply to prevent electrical shock before connecting the
electrical supply.
CAUTION: If the supply cord is damaged, it must be replaced by the manufacture, its
service agent or similarly qualified person in order to avoid a hazard.
CAUTION: The 2-amp bipolar fuse with a minimum contact opening of 3 mm must be
used in the electrical connection of the boiler.
CAUTION: The cable diameter (including insulation) of the electrical installation to be
installed must be at least 14 mm and the pipe diameter used must be at least 16 mm.
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