Airwell AQL 50 [19/63] Installation

Airwell AQL 50 [19/63] Installation
Page 18
Installation
4 INSTALLATION
4.1 Installation Site
Before installing the unit, make
sure that the building structure
and/or the supporting surface can
withstand the weight of the device.
The weights of the units are de-
tailed by Chapter 9 of this manual.
These units have been designed to be installed on
the floor, in the open air. As a standard, they are
equipped with rubber vibration-damping supports
which shall be arranged in the middle, beneath the
supporting plates.
When the unit is to be installed on the ground, pro-
vide for a concrete bedplate which shall assure a
uniform distribution of the weights.
No special subbase is generally required. Howev-
er, if the unit is to be installed above inhabited
rooms, it is recommended to place it on spring
shock absorbers (40-130 units) which shall reduce
to a minimum the transmission of vibrations to the
structures.
When selecting the installation site, never forget to
consider as follows:
h
The longitudinal axis of the unit shall be parallel
to the direction of the prevailing winds so as to
assure a uniform air distribution on finned ex-
changers.
h
The unit shall never be installed in the proximity
of chimneys for the discharge of boiler flue gas-
es.
h
The unit shall never be installed downwind of
sources of grease contaminated air, such as for
example the outlets of large-kitchen extractors.
Otherwise, grease might build up on the fins of
refrigerant / air exchangers or condensers, act
as a fixing agent for any sort of atmospheric im-
purity and rapidly cause the exchangers to clog.
h
The unit shall never be installed in areas exposed
to heavy snowfalls.
h
The unit shall never be installed in areas exposed
to flooding or beneath drip stones, etc.
h
The unit shall never be installed in narrow inner
court yards or in any other restricted space
where the noise may be reflected by the walls or
where the air expelled by the fans may short-cir-
cuit on the refrigerant/air heat exchangers or
condensers.
h
The installation site shall be characterised by the
presence of the space required for air circulation
and for the performance of maintenance opera-
tions (see chapter 9 for further details).
4.2 Defrost Water Drainage
(only for AQH units)
When AQH units operate in the heat pump mode,
they will discharge water from the bedplate during
defrost cycles.
For this reason it is recommended to install these
units with a minimum ground clearance of 200 mm
to allow the defrost water to drain freely as well as
to prevent it from freezing and forming any ice
build-up.
AQH units shall be installed where defrost water
may cause no damage.

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