Viessmann VITOCAL 151-A - Safety and Liability; Safety Zone; Siting the Outdoor Unit in Front of an External Wall; Corner Positioning of the Outdoor Unit, Right

9
Your outdoor unit contains easily flammable refrigerant
in safety group A3 according to ISO 817 and ANSI/
ASHRAE Standard 34.
Therefore a safety zone is defined in the immediate
vicinity of the outdoor unit, in which special require-
ments apply.
Note
The requirements for the safety zone must be com-
plied with completely.
The following conditions must not be present or occur
within the safety zone:
■
Building openings, e.g. windows, doors, light wells,
flat roof windows, etc.
■
Outdoor air and exhaust air apertures from ventila-
tion and air conditioning systems
■
Property boundaries, neighbouring properties, foot-
paths and driveways
■
Pump shafts, inlets to waste water systems, down-
pipes and waste water shafts, etc.
■
Other slopes, troughs, depressions, shafts
■
Electrical house supply connections
■
Electrical systems, sockets, lamps, light switches
■
Snowfall from roofs
Do not introduce ignition sources into the safety zone:
■
Naked flames or burner gauze assemblies
■
Grills
■
Tools that generate sparks
■
Electrical devices not free of ignition sources, mobile
devices with integrated batteries (e.g. mobile
phones, fitness watches, etc.)
■
Objects with temperatures above 360 °C
Note
The particular safety zone is dependent on the sur-
roundings of the outdoor unit.
■
The safety zones below are shown with floorstanding
installation. These safety zones also apply to other
types of installation.
■
In the case of wall installation, the requirements lis-
ted above also apply to the area below the outdoor
unit, down to the ground.
Freestanding positioning of the outdoor unit
1000
A
Fig. 1
A
Safety zone
Siting the outdoor unit in front of an external wall
2144
3144
3144
1000
250
A
A
Fig. 2
A
Safety zone
Corner positioning of the outdoor unit, right
2394
2894
250
A
A
1000
1800 500
750
Fig. 3
A
Safety zone
Safety and liability
Safety zone
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