Installation - Mechanical
30
CLCH-SVX009J-EN
wiring should be disconnected from switch in
control interface box. Any controls low voltage end
devices located in second level fan portion should
be disconnected via quick connects at each device.
Unit Placement and Assembly for
Outdoor Air Handlers
Note:
For outdoor air handlers, preparation of the roof
curb or pier mount and roof openings must be
completed before lifting to the roof. See CLCH-
SVN-006*-EN Performance Climate Changer Air
Handler Model UCCA Roof Curb Installation
Instructions.
For proper operation, the unit must be installed level (zero
tolerance) in both horizontal axes. For vertical discharge
units, allow space under the unit for supply air ductwork
connections.
Roof Curbs
The roof curb must be supported along its entire
perimeter. The curb may be set parallel or at right angles
to roof support members. If at right angles to the support
members, there must be adequate supporting roof cross
members between the ends (in the direction of airflow). Be
sure the cross members do not interfere with the
connection of supply and return ducts to the unit. See the
figure below for details.
When mounting the unit on its roof curb, make sure that
the gasketing between the roof curb and unit base
provides an airtight seal.
Pier Mount
If a unit is pier-mounted, at a minimum, locate one pier at
each corner and then every four feet at equally spaced
intervals around the perimeter of the unit. Both the unit
and the pipe cabinet should be supported by their base
channel around the entire perimeter (see
).
Assembly
If a unit arrives in sections, then each section must be
individually hoisted, set on the housekeeping pad, roof
curb, or pier mount and then assembled.
Refer to the unit submittals and unit tagging for correct
placement of all sections. If there are any discrepancies
between the submittals and the unit tagging, contact your
local Trane representative before proceeding.
Following the order of the sections on the unit submittals
and tagging, individually place each unassembled section
or subassembly in the appropriate installation location.
Note:
Prior to placing fan section in the appropriate
installation location, verify shipping tie-downs
have been removed.
NOTICE
Microbial Growth!
Standing water and wet surfaces inside the equipment
can become an amplification site for microbial growth
(mold), which could cause odors and damage to the
equipment and building materials. The floor or
foundation must be level and the condensate drain at
the proper height for proper coil drainage and
condensate flow.
Figure 31. Unit set perpendicular to roof curb members
Discharge
Intake
Airflow
Auxillary support
loaded under curbs
Roof mounting curb
inside edge
Main roof support member
capable of supporting unit
weight
Main roof support member
or auxillary support located
under center of unit or under
section joints
Figure 32. Pier locations (typical)
Note:
Piers be must be structurally sound to support the weight of the unit.
Figure 33. Pier mount - side view
Piers
4 ft