Viessmann VITOLIGNO 300-H Operating Instructions For The System User page 4

Heating system with ecotronic weather-compensated, digital boiler and heating circuit control unit

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Safety instructions

For your safety

Extractors

The operation of appliances that extract

air to the outside (cooker hoods, extrac-

tors, air conditioning units, etc.) can cre-

ate vacuum pressure. If the boiler is

operated at the same time, this can lead

to reverse flow of the flue gas.

Danger

The simultaneous operation of

the boiler and appliances that

extract air to the outside can

result in life threatening poison-

ing due to reverse flow of the flue

gas.

Take suitable steps to ensure an

adequate supply of combustion

air. If necessary, contact your

heating contractor.

Auxiliary components, spare and

wearing parts

Please note

Components not tested with the

heating system may damage the

system or affect its function.

Have all installation or replace-

ment work carried out exclusively

by qualified contractors.

(cont.)

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