- 3 -
5.2 Foundation
Adequate space should be left around the
unit for coils & drainage piping, filter
replacement, and maintenance. (See
Figure 3). If site access space for coil is
not follow recommendation, AHU need to
dismantle for coil replacement. The unit is
installed at a height that allows the
installation of condensate drain trap.
Figure 3
–
Recommended minimum service
clearances
To minimize noise transmission, insulation
material (rubber pad) may be placed
between the unit base and the foundation
(See Figure 4)
Figure 4 – Air handling unit Plinth Foundation
5.3 Section Joint
Units that shipped in sections must be
carefully assembled to desired unit
arrangement. The air handling units are
design to use section joint brackets to
combine two sections. Section joints for
cabinet and base frame are shown in
Figure 5 and Figure 6. (provided when
cabinets are joined by intermediate-post
to intermediate-post arrangement)
Figure 5 – Cabinet Section Joint
Figure 6 – Base Frame Section Joint
The section joints are pre-installed on
cabinets and base frames as shown in
Figure 7 (For AHU combination of 2
sections and above). The joint for side will
located outside of AHU, joint for top
bottom will be located inside of AHU.
Figure 7 – Pre-installed section joints
To join two sections, install and level the
first section in position, then push the
second section close to the first section
after the alignment is correct as shown in
