Vaillant VWZ MWT 150 Installationsanleitung Seite 18

1.3.6 Risk of material damage due to
additional elements in the heating
water
Frost and corrosion protection agents may
cause changes in the seals, noises during
heating mode may cause other consequential
damage.
▶ Use only suitable frost and corrosion pro-
tection agents.
1.3.7 Risk of material damage caused by
using an unsuitable tool
▶ Use the correct tool.
1.3.8 Risk of building damage caused by
water leakage
If the unit is not installed correctly, this may
lead to leaks.
▶ Ensure that the hydraulic lines are routed
free from mechanical stress.
▶ Insert the seals correctly.
1.4 Regulations (directives, laws,
standards)
▶ Observe the national regulations, stand-
ards, directives, ordinances and laws.
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Installation instructions 0020166669_06