1 Safety
6
Operating instructions aroTHERM 0020151761_04
Frost protection and monitoring
devices are only active while
the product is connected to
the power supply. The product
must be connected to the power
supply.
1.2.12 Frost damage caused
by insufficient room
temperature
If the room temperature is set
too low in individual rooms, it
cannot be ruled out that sec-
tions of the heating installation
might be damaged by frost.
▶
If you are going to be away
during a cold period, ensure
that the heating installation
remains in operation and that
the rooms are sufficiently
heated.
▶
You must observe the frost
protection instructions.
1.2.13 Frost damage caused
by a power cut
During installation, your com-
petent person connected your
product to the power mains.
If the power supply is cut, it is
possible that parts of the heat-
ing installation may become
damaged by frost. If you want
to use an emergency power
generator to maintain the oper-
ational readiness of the product
during a power cut, note the fol-
lowing:
▶
Contact your competent per-
son for advice on installing an
emergency power generator.
▶
Ensure that the technical val-
ues of this generator (fre-
quency, voltage, earthing)
match those of the power
mains.
1.2.14 Malfunction caused
by incorrect system
pressure
To avoid operating the system
with too little water and thus
prevent resulting damage, note
the following:
▶
Check the system pressure
of the heating installation at
regular intervals.
▶
You must observe the system
pressure instructions.
1.2.15 Malfunction due to
incorrect power supply
The power supply must remain
within the specified limits so that
the product does not malfunc-
tion:
–
1 phase: 230 V (+10/-15%)
~50 Hz
–
3 phases: 400 V (+10/-15%) 3
N ~50 Hz
