Installation Sequence Installing The External Unit; Installation Information - Viessmann VITOCAL 222-S Installation And Service Instructions Manual

Installation sequence
Installing the external unit

Installation information

Types of installation:
Floorstanding installation with line entry above
■
ground level
■ Floorstanding installation with line entry below
ground level
■ Wall mounting
Technical guide
Floorstanding installation:
■ Use supports for floorstanding installation (accesso-
ries).
Where such supports cannot be used, install the
■
external unit freestanding on a solid base of
at least 100 mm height.
■ In difficult climatic circumstances (temperatures
below zero, snow, humidity) install the appliance on
a plinth of approx. 300 mm height.
■ Take into account the weight of the external unit: See
the following table.
Wall mounting:
■ Use the wall mounting bracket set (accessories).
■ The wall must meet the structural requirements.
Positioning:
Never install with the discharge side facing the main
■
wind direction.
■ Provide wall ducts and protective pipes for the refrig-
erant lines and electrical cables without moulded
parts and change of direction.
Weather influences:
Observe wind loads when installing the unit on sites
■
exposed to the wind.
■ Incorporate the external unit into the lightning protec-
tion system.
■ Consider the heat emitted by the unit when planning
your weatherproofing or an enclosure.
10
Condensate:
Ensure the condensate can drain freely, and create a
■
permanent gravel bed below the external unit as a
soakaway.
■ In regions with prolonged cold seasons (such as
Sweden for example), provide an electric ribbon
heater (accessory) for the condensate pan.
Insulation against structure-borne noise and vibra-
tions between building and external unit:
■ When line entry is above ground level, fit pipe bends
in the refrigerant lines for vibration compensation:
See "Connecting refrigerant lines".
Route electrical cables/leads between the internal
■
and external units free of stress.
■ Installation only on walls with high weight per area (
2
250 kg/m ), in other words not on lightweight walls,
roof structures etc.
For floorstanding installation, only use the rubber
■
mounts supplied.
■ For wall mounting, only use the anti-vibration mounts
from the bracket set.
■ Never use additional anti-vibration mounts, springs,
rubber mounts, etc.
Weight of external units
Type AWT/AWT-AC
221.A04
221.A05
221.A07
221.A10
221.A13
221.B10
221.B13
221.B16
>
Weight in kg
43
66
66
113
113
113
113
113