Vaillant VIH R 300/3 BR Notice D'emploi page 5

▶ 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 conditions that may
affect the operational reliability of the
product
1.3.6 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 spe-
cified.
0020241667_04 Operating instructions
Safety 1
5