7
3. Foundations and
Erection
3.1 Foundation
When selecting and preparing the unit
site, follow these guidelines:
1. Ensure that the site can support the
total weight of the unit. Unit weight
figures only provide total gross weights
and do not include the additional
weight for water in any coils.
2. Confirm that the foundation of the
mounting platform is large enough to
include the unit dimensions plus
service plus service access.
3. The floor or foundation must be level
for correct coil drainage and
condensate flow.
4. Provide adequate lighting for
maintenance personnel to perform
maintenance duties.
5. When the unit is positioned on site,
there must be sufficient space around
the unit to ensure that correct operation
and effective maintenance can be
carried out. Figure 6 gives
recommended space allowances.
•
On the designated access side of the
unit, working areas must be equal to the
width of the unit, dimension “P.”
•
Allowance for coil connections,
dimension “C” must be dimension “P” +
200 mm.
•
A clear unobstructed area before and
after an air intake or discharge is
required to ensure correct air
movement. The width of the area must
be >= the width of the unit, and the
depth (dimension "L") must be >= 0.5 x
the overall unit height.
Complete reinforced concrete
foundations are suitable or strip
foundations may also be used (see
Figure 7).
In the case of strip foundations, concrete
or steel supports are permissible, but
support is required under breakpoints and
every 2 m along the unit base.
Figure 7 – Air Handling Unit Steels Foundation
Figure 6
L
P
C
CLCH-SVX05A-GB
