Vaillant allSTOR plus VPS 800/4-5 Operating Instructions Manual page 11

▶ Do not tamper with any of the
safety devices.
▶ Do not damage or remove
any tamper-proof seals on
components.
▶ Do not make any changes:
– The product itself
– The water and electricity
supply lines
– to the expansion relief valve
– to the drain pipework
– to constructional condi-
tions that may affect the
operational reliability of the
product
1.2.3 Risk of injury and
material damage due to
maintenance and repairs
carried out incorrectly or
not carried out at all
▶ Never attempt to carry out
maintenance work or repairs
on your product yourself.
▶ Faults and damage should
be immediately rectified by a
competent person.
▶ Adhere to the maintenance
intervals specified.
1.2.4 Risk of material damage
caused by frost
▶ Ensure that the heating in-
stallation always remains in
operation during freezing con-
ditions and that all rooms are
sufficiently heated.
0020314386_00 allSTOR plus Operating instructions
▶ If you cannot ensure the oper-
ation, have a competent per-
son drain the heating installa-
tion.
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