Vaillant VRT 350f Installation Instructions Manual page 5

1.3.5 Frost damage caused by switching
the unit off
If you switch off the heating installation, parts
of the heating installation may be damaged by
frost.
▶ Do not disconnect the heat generator from
the power grid.
▶ Leave the heating installation main switch
in the "1" position.
1.3.6 Frost damage caused by excessively
low room temperature
If the room temperature is set too low in indi-
vidual rooms, sections of the heating installa-
tion might be damaged by frost.
▶ If you are absent during a frosty spell, en-
sure that the heating installation remains in
operation and the rooms are warmed ad-
equately.
▶ Please note the frost protection function.
0020131979_01 Operating instructions
1.3.7 Batteries
▶ Note the battery type, as described in
these instructions; see section "Data plate".
▶ Remove and insert batteries as described
in these instructions; see section "Chan-
ging the batteries".
▶ Do not recharge non-rechargeable batter-
ies.
▶ Remove rechargeable batteries from the
product before charging them.
▶ Do not combine batteries with other battery
types.
▶ Do not combine new and used batteries.
▶ Insert the batteries, making sure that the
poles are the right way round.
▶ Remove the dead batteries from the
product and dispose of them correctly.
▶ Remove the batteries if you intend to store
the product and not use it for an extended
period and/or to scrap it.
▶ Do not short-circuit the connection contacts
in the product's battery compartment.
5