30
■
If siting the appliance in a location that is exposed to
wind, ensure that the wind cannot influence the fan
area. Strong wind can have a negative influence on
the air flow through the evaporator.
■
Select an installation location where the evaporator
cannot be blocked by leaves, snow, etc.
■
Install the outdoor unit outside the area at risk of
snowfall from roofs.
■
Select the installation location giving due considera-
tion to the physical laws of sound propagation and
reflection.
Technical guide
■
Do not install above cellar shafts or floor troughs.
■
Do not install near bedroom windows.
■
To avoid increased wind loads, maintain 1 m dis-
tance from building edges and corners.
■
Maintain a clearance of at least 3 m to pathways,
downpipes or sealed surfaces. The cooled air in the
discharge area creates a risk of ice forming when
outside temperatures are below 10 °C.
■
The installation location must be easily accessible,
for example for maintenance work: See chapter
"Minimum clearances".
Additional requirements for flat roof installation:
■
Never install the outdoor unit on a flat roof immedi-
ately next to or above living rooms or bedrooms.
■
Do not locate in front of windows, or keep a distance
of 1 m from them.
■
Due to the higher static loads (roof/wind load) and
the higher acoustic requirements for roof installation,
input from a specialist design engineer is required.
The specialist design engineer specifies the require-
ments for structural calculations, distances from
building edges and sound concepts.
Safety zone
The refrigerant circuit in the outdoor unit contains
easily flammable refrigerant in safety group A3 accord-
ing 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.
The following conditions must not be present or
occur within the safety zone:
■
Building openings, e.g. windows, doors, light wells,
flat roof windows
■
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
Requirements if other heat pumps are installed in
the vicinity:
■
Only outdoor units of the same type and with the
same refrigerant from safety group A3, as set out in
ISO 817 and ANSI/ASHRAE Standard 34, may be
installed within the safety zone. The overall safety
zone is then determined by adding the overlapping
safety zone areas together.
■
The following heat pumps must be sited outside the
safety zone:
–
Heat pumps of a different type
–
Heat pumps with different refrigerant
–
Heat pumps from another manufacturer
Do not introduce ignition sources into the safety
zone, e.g.:
■
Naked flames or burner gauze assemblies
■
Tools that generate sparks
■
Electrical devices not free of ignition sources, mobile
devices with integrated batteries
■
Objects with temperatures above 360 °C
Note
The particular safety zone is dependent on the sur-
roundings of the outdoor unit.
■
The safety zones shown in the following are for the
floorstanding installation of an outdoor unit with
2 fans.
–
These safety zones also apply to outdoor units
with 1 fan.
–
These safety zones also apply to wall and roof
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.
Floor area of safety zone
If necessary, it is possible to deviate from the dimen-
sions of 1000 mm to the side and 1800 mm to the
front. Please note the following:
■
There must be a safety zone to the front and side.
■
The floor area of the safety zone must be observed.
Siting the outdoor unit
Installation location (cont.)
6222080
Installation
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