Viessmann CM2-620 TX - About These Instructions; For Your Safety; Operation; Gas Smell

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5584 070 - 01
Vitocrossal 200, CM2-400, -500, -620 and 620 TX Operating
About these Instructions
Take note of all symbols and notations intended to draw attention to potential hazards or important product
information. These include “WARNING”, “CAUTION”, and “IMPORTANT”. See below.

IMPORTANT
CAUTION
Warnings draw your attention to the presence of
potential hazards or important product information.

Cautions draw your attention to the presence of
potential hazards or important product information.

Helpful hints for installation, operation or maintenance
which pertain to the product.

This symbol indicates that additional, pertinent
information is to be found.

This symbol indicates that other instructions must
be referenced.
General Information/Safety
Incomplete combustion and poisonous gases result if the
fresh air intakes in the mechanical room are closed. Never
close these openings.
CAUTION
WARNING
Indicates an imminently hazardous situation which,
if not avoided, could result in death, serious injury
or substantial product/property damage.
Indicates an imminently hazardous situation which,
if not avoided, may result in minor injury or product/
property damage.
For your Safety
 Operation
Before operating the boiler, make sure you fully
understand its method of operation. Your heating
contractor should always perform the initial start-up and
explain the system. Any warranty is null and void if these
instructions are not followed.
 Gas smell
Follow the instructions on the front of the manual.
 Flue gas smell
- Deactivate heating equipment.
- Open windows and doors.
- Inform your heating contractor immediately.