Trane CSAA User manual

SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing
of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and
training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or
serious injury. When working on the equipment, observe all precautions in the literature and on the tags,
stickers, and labels that are attached to the equipment.
Installation Instructions
Roof Curbs for Performance Climate Changer™
Air Handlers
Model CSAA and PSCA
X-39641204010
CLCH-SVN05C-EN
May 2018

© 2018 Ingersoll Rand CLCH-SVN05C-EN
Introduction
Read this manual thoroughly before operating or servicing
this unit.
Warnings, Cautions, and Notices
Safety advisories appear throughout this manual as
required. Your personal safety and the proper operation of
this machine depend upon the strict observance of these
precautions.
Important Environmental Concerns
Scientific research has shown that certain man-made
chemicals can affect the earth’s naturally occurring
stratospheric ozone layer when released to the
atmosphere. In particular, several of the identified
chemicals that may affect the ozone layer are refrigerants
that contain Chlorine, Fluorine and Carbon (CFCs) and
those containing Hydrogen, Chlorine, Fluorine and
Carbon (HCFCs). Not all refrigerants containing these
compounds have the same potential impact to the
environment. Trane advocates the responsible handling of
all refrigerants-including industry replacements for CFCs
and HCFCs such as saturated or unsaturated HFCs and
HCFCs.
Important Responsible Refrigerant
Practices
Trane believes that responsible refrigerant practices are
important to the environment, our customers, and the air
conditioning industry. All technicians who handle
refrigerants must be certified according to local rules. For
the USA, the Federal Clean Air Act (Section 608) sets forth
the requirements for handling, reclaiming, recovering and
recycling of certain refrigerants and the equipment that is
used in these service procedures. In addition, some states
or municipalities may have additional requirements that
must also be adhered to for responsible management of
refrigerants. Know the applicable laws and follow them.
The three types of advisories are defined as follows:
WARNING Indicates a potentially hazardous
situation which, if not avoided, could
result in death or serious injury.
CAUTIONsIndicates a potentially hazardous
situation which, if not avoided, could
result in minor or moderate injury. It
could also be used to alert against
unsafe practices.
NOTICE Indicates a situation that could result in
equipment or property-damage only
accidents.
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/state electrical codes.
WARNING
Personal Protective Equipment (PPE)
Required!
Failure to wear proper PPE for the job being undertaken
could result in death or serious injury. Technicians, in
order to protect themselves from potential electrical,
mechanical, and chemical hazards, MUST follow
precautions in this manual and on the tags, stickers,
and labels, as well as the instructions below:
• Before installing/servicing this unit, technicians
MUST put on all PPE required for the work being
undertaken (Examples; cut resistant gloves/sleeves,
butyl gloves, safety glasses, hard hat/bump cap, fall
protection, electrical PPE and arc flash clothing).
ALWAYS refer to appropriate Material Safety Data
Sheets (MSDS)/Safety Data Sheets (SDS) and OSHA
guidelines for proper PPE.
• When working with or around hazardous chemicals,
ALWAYS refer to the appropriate MSDS/SDS and
OSHA/GHS (Global Harmonized System of
Classification and Labelling of Chemicals) guidelines
for information on allowable personal exposure
levels, proper respiratory protection and handling
instructions.
• If there is a risk of energized electrical contact, arc, or
flash, technicians MUST put on all PPE in accordance
with OSHA, NFPA 70E, or other country-specific
requirements for arc flash protection, PRIOR to
servicing the unit. NEVER PERFORM ANY
SWITCHING, DISCONNECTING, OR VOLTAGE
TESTING WITHOUT PROPER ELECTRICAL PPE AND
ARC FLASH CLOTHING. ENSURE ELECTRICAL
METERS AND EQUIPMENT ARE PROPERLY RATED
FOR INTENDED VOLTAGE.

Introduction
CLCH-SVN05C-EN 3
Copyright
This document and the information in it are the property of
Trane, and may not be used or reproduced in whole or in
part without written permission. Trane reserves the right
to revise this publication at any time, and to make changes
to its content without obligation to notify any person of
such revision or change.
Trademarks
All trademarks referenced in this document are the
trademarks of their respective owners.
Revision History
Updated dimensional data.
WARNING
Follow EHS Policies!
Failure to follow instructions below could result in
death or serious injury.
• All Ingersoll Rand personnel must follow Ingersoll
Rand Environmental, Health and Safety (EHS)
policies when performing work such as hot work,
electrical, fall protection, lockout/tagout, refrigerant
handling, etc. All policies can be found on the BOS
site. Where local regulations are more stringent than
these policies, those regulations supersede these
policies.
• Non-Ingersoll Rand personnel should always follow
local regulations.

4CLCH-SVN05C-EN
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Overview of Manual . . . . . . . . . . . . . . . . . . . 5
Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Site Preparation . . . . . . . . . . . . . . . . . . . . . . . 6
Roof Curb Installation Checklist . . . . . . . . . . 6
Dimensions and Weights . . . . . . . . . . . . . . . . . 7
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Assembly and Installation . . . . . . . . . . . . . 10
Unit Roof Curb . . . . . . . . . . . . . . . . . . . . . 10
Pipe Cabinet Roof Curb . . . . . . . . . . . . . . 12
Specialty Roof Curbs . . . . . . . . . . . . . . . . 12
Ductwork Recommendations . . . . . . . . . . . 13
Sound Attenuation . . . . . . . . . . . . . . . . . . 13
Supply and Return Air Ductwork . . . . . . 14
Parts Information . . . . . . . . . . . . . . . . . . . . . 15

CLCH-SVN05C-EN 5
Introduction
Overview of Manual
Performance Climate Changer™ air handlers may be
mounted on the roof with a roof curb or pier mount. This
manual includes the assembly instructions. Before
proceeding with the installation, refer to the unit submittal
drawings and unit tagging for correct placement of air
handler sections. Failure to review the submittal drawings
could result in performance or assembly problems. If there
are any discrepancies, contact your local Trane sales
engineer before proceeding. Carefully review the
procedures discussed in this manual to minimize
installation and startup difficulties.
Nameplate
Each air handler section includes at least one nameplate/
label, which identifies the type of section and functional
components, customer tagging information, the unit
serial number, the unit order number, the build section
position for installation, and the unit model number. Refer
to this information when ordering replacement parts or
requesting service.
Note: The unit serial number and order number is
required when ordering parts or requesting service
for a Trane air handler.
Figure 1. Performance air handler section nameplate
Agency listings and/or
agency certifications
Trane order number
Unit level serial number
Service model number
Unit tagging
Section location
Functional section type
Notes and additional
section information

6CLCH-SVN05C-EN
Pre-Installation
As-built submittals show the intended layout of the
various air handler sections to meet job site requirements.
Installation information (unit dimensions, clearances,
weights, curb location and roof opening dimensions and
locations) may vary with special equipment and
applications. For exact information, always refer to the
specific unit submittals, which can be obtained from your
local Trane sales office.
Roof curbs are shipped “knocked down” for assembly at
the job site.
Site Preparation
Ensure the installation site can support the total weight of
the air-handling unit, including accessories and the roof
curb. For approximate air handler section weights, refer to
Performance Climate Changer™ Air Handler IOM, CLCH-
SVX07*-EN. Units with special options or arrangements
will differ in dimensions, clearances, weights and roof
opening dimensions and locations. Always refer to unit
submittals before marking off the dimensions of the unit
roof curb, pipe ca binet curb (if pipe cabinet is ordered),
and roof openings. For roof curbs supplied by Trane,
approximate roof curb weights are in Table 1 .
Note: To calculate the total curb weight, find the unit
length, multiply by the factor supplied in Table 1 for
the applicable roof curb height, and add the curb
end weight for the applicable roof curb height.
Roof Curb Installation Checklist
It is recommended that the curb be installed directly on the
support members and fastened to the supports using tack
welds or other equivalent methods. Properly supported
decking should be installed inside the air handler section
of the curb when this method is used.
Verify that the roof structure can adequately support
the combined weight of the unit and curb assembly.
Ensure that the selected installation location provides
sufficient service and operational clearances.
Remove any twist within the curb due to roof supports
and square the curb.
Level the curb.
Secure the curb to the roof support members.
Install 2-inch thick boards or rigid insulation around the
curb.
Install cant strips around the curb.
Bring field supplied roofing felt up to the top of the
curb nailing strips. Nail felt into place.
Install field supplied flashing under the lip of the curb
flanges and over the felt.
Apply sealant to the four corners.
Caulk all joints between the curb and the roof. Attach
the gasket material to the curb’s top flanges (entire
perimeter) and to the supply and return air duct open
panel flanges.

CLCH-SVN05C-EN 7
Dimensions and Weights
Table 1. CSAA Curb weights
Curb
height Unit Size 3 4 6 8 10 12 14 17 21 25
14-inch Curb end and duct
support weight 117.23 155.82 155.82 175.88 209.84 225.27 242.25 242.25 266.94 266.94
Curb side weight Take total length in inches, multiply by 0.56 pounds, and add to the above curb end & duct support weight.
18-inch Curb end and duct
support weight 148.76 197.59 197.59 222.98 265.95 285.48 306.96 306.96 338.21 338.21
Curb side weight Take total length in inches, multiply by 1.05 pounds, and add to the above curb end & duct support weight.
22-inch Curb end and duct
support weight 171.54 227.14 227.14 256.05 304.98 327.22 351.68 351.68 387.26 387.26
Curb side weight Take total length in inches, multiply by 1.22 pounds, and add to the above curb end & duct support weight.
26-inch Curb end and duct
support weight 215.31 286.02 286.02 322.78 385.00 413.28 444.39 444.39 489.64 489.64
Curb side weight Take total length in inches, multiply by 2.00 pounds, and add to the above curb end & duct support weight.
30-inch Curb end and duct
support weight 240.72 319.23 319.23 360.06 429.15 460.56 495.11 495.11 545.36 545.36
Curb side weight Take total length in inches, multiply by 2.25 pounds, and add to the above curb end & duct support weight.
36-inch Curb end and duct
support weight 278.82 369.05 369.05 415.98 495.38 531.48 571.18 571.18 628.93 628.93
Curb side weight Take total length in inches, multiply by 2.63 pounds, and add to the above curb end & duct support weight.
Curb
height Unit Size 30 35 40 50 57 66 80 100 120
14-inch Curb end and duct
support weight 308.62 328.68 367.27 407.39 407.39 453.70 453.70 496.91 581.80
Curb side weight Take total length in inches, multiply by 0.56 pounds, and add to the above curb end & duct support weight.
18-inch Curb end and duct
support weight 390.95 416.34 465.17 515.95 515.95 574.54 574.54 629.23 736.65
Curb side weight Take total length in inches, multiply by 1.05 pounds, and add to the above curb end & duct support weight.
22-inch Curb end and duct
support weight 447.31 476.22 531.82 589.64 589.64 656.36 656.36 718.63 840.95
Curb side weight Take total length in inches, multiply by 1.22 pounds, and add to the above curb end & duct support weight.
26-inch Curb end and duct
support weight 566.00 602.77 673.47 747.00 747.00 831.85 831.85 911.03 1066.58
Curb side weight Take total length in inches, multiply by 2.00 pounds, and add to the above curb end & duct support weight.
30-inch Curb end and duct
support weight 630.15 670.98 749.50 831.15 831.15 925.37 925.37 1013.31 1186.04
Curb side weight Take total length in inches, multiply by 2.25 pounds, and add to the above curb end & duct support weight.
36-inch Curb end and duct
support weight 726.38 773.30 863.54 957.38 957.38 1065.66 1065.66 1166.73 1365.24
Curb side weight Take total length in inches, multiply by 2.63 pounds, and add to the above curb end & duct support weight.
Note: Example: Size 21 Performance air handler with airfoil damper mixing section, small coil section, medium access section, medium coil section, small
blank section, VFD control section, and fan section (down discharge) total unit length is 156.75 inches. Total roof curb weight for the 18-inch curb
would be 502.80 lbs (156.75 x 1.05 = 164.5875 lbs + 338.21 = 502.7975 lbs.)

8CLCH-SVN05C-EN
Installation
Placement
Note: Isolation rails should not be installed on top of
Trane roof curbs. If isolation rails or isolation curbs
are required, the entire curb system should be
supplied by a specialty curb company.
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
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.
Note: When pulling shipping split sections together, the
field-supplied gasket material may bunch up
between bases. Make certain this does not prevent
tight contact between shipping sections.
• If a unit is pier-mounted, at a minimum, locate one pier
at each corner directly underneath any shipping split
(ensure full support under each side), 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 Figure 3 and Figure 4).
See Figure 5 for typical cross section for pier- or slab-
mounted base.
Figure 2. 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 3. Pier locations (typical)
Figure 4. Side view with shipping splits
Note: Piers beneath shipping splits must be structurally sound to support
the weight of the unit.
Piers
4 ft

Installation
CLCH-SVN05C-EN 9
•For new building construction, the roof curb may be
installed as soon as the roof support members are in
place. Trane recommends that the roof curb be placed
directly on the roof support members and welded into
place. If the curb is mounted on the roof deck,
additional support is necessary directly below the curb
flanges to minimize vibration.
•Do not overlap counter flashing over the top of the roof
curb. Counter flashing should extend to the bottom of
the roof curb drip lip. Attach counter flashing with
fastener through the wooden nailer. Figure 6, Figure 7
and Figure 8 show typical roof curb installations and
detail.
Note: Materials that attach to the roof curb are supplied
by the installer, including flashing, insulating
material and cant. Gasket and 2 x 4 nailer are
supplied by Trane.
Figure 5. Typical cross section for pier mounted or
slab-mounted base
Note: For PSCA, the base rail height is 7.25 in. Verify the base rail width
in unit submittal.
3.0 in. - sizes 3-50
4.0 in. - sizes 57-120
6.0 in. - sizes 3-120
Figure 6. Typical roof curb installation - existing
building
Figure 7. Typical roof curb installation - new
construction
Figure 8. Detail of installation
Roof structure Roof deck
Wooden nailer
2 x 4 nailer
Roof curb
4 x 4 cant
Flashing
Roof/insulating material
Counter flashing
Nail
Gasket
Roof insulation
2 x 4 nailer
Roof curb
Roof structure
Roof deck
4 x 4 cant
Flashing
Roof/insulating material
Counter flashing
Nail
Gasket
Roof insulation
2 x 4
Nailer
Roof
curb
Gasket
Nail
Counter
flashing
Flashing
Roofing/insulating
material

Installation
10 CLCH-SVN05C-EN
Assembly and Installation
The following procedure explains how to assemble and
install roof curbs provided by Trane. An attachment
specific to your roof curb is shipped with your Trane-
ordered roof curb. See typical exploded view and parts list
in Figure 22, p. 15 and Table 4 , p. 16 . In order to properly
locate the duct supports (if required) and external piping
cabinet (if ordered), it is recommended that you have a
copy of the as-built curb drawings from the submittal
package. For specialty or field-fabricated roof curbs please
see the section entitled “Specialty Roof Curbs,” p. 12 for
important information.
Unit Roof Curb
1. Attach cross brace and outer side splice plates at splice
locations (refer to the following figure).
2. Attach outer and inner corner splice plates (4 places) as
shown in the figure below.
Figure 9. Typical roof curb provided by Trane
WARNING
Risk of Roof Collapsing!
Failure to ensure proper structural roof support could
cause the roof to collapse, which could result in death
or serious injury and property damage. Confirm with a
structural engineer that the roof structure is strong
enough to support the combined weight of the roof
curb and the unit. Refer to “Dimensions and Weights,”
p. 7 for typical curb weights.
Figure 10. Side splice detail
Figure 11. Corner splice detail
Washer
Bolt
Splice
plate
Washer
Nut
Cross brace
Nut
Washer Inner corner
angle
Roof curb
Washer
Bolt
Outer corner
angle