Trane SSC-APG002-EN User guide

Application Guide
SSC-APG002-EN
For Trane XR Style Split Condensing Units and Heat Pumps
Low OD Ambient Operation
Unit Mounting
Minimum Clearances

Purpose:
The purpose of this bulletin is to provide cumulative application criteria as related to the Trane XR
style cooling units and heat pumps.
This bulletin discusses:
I. Definitions and terms
II. Off Season Cooling Operation
III. Unit Mounting
IV. Minimum Operating Clearances
ISSUED BY:
Product Application Engineering Department
Trane
Tyler, Texas
Pg 2
POSITION STATEMENT:
The Trane Company has always recommended installing Trane approved, matched indoor
and outdoor systems. All Trane split systems with a nominal rating of 13 SEER and above
are listed in the ARI Certified Directory with thermostatic expansion valves (TXV) only.

Pg. 3
All 2.5 to 5 ton three phase split system cooling units and heat pumps are shipped from
the factory with compressor crankcase heat. Three phase compressor do not require
start capacitors or start relays.
CCHT - Compressor Crankcase Heater, sometimes called a compressor sump heater.
This device is designed to warm the compressor crankcase (or sump) in order to prevent
or deter refrigerant migration during the compressor off cycle. Compressor crankcase
heaters are required for low ambient cooling operation.
TXV - Thermostatic Expansion Valve. This is a type of refrigerant flow control device
designed to maintain constant superheat throughout the operating envelope. For low
ambient cooling applications, a non-bleed TXV is required.
Bleed TXV: This type of TXV will allow the refrigerant pressures between the high side
and low side to equalize through the valve during the off cycle.
Non Bleed TXV: This type of TXV will not allow the refrigerant pressures between the
high side and low side to equalize through the valve during the off cycle. When using this
type of valve on single phase units with reciprocating style compressors, compressor
start components are required. Check product data specifications for most current infor-
mation.
Head pressure controller - A device that is field installed on a condensing unit or heat
pump designed to maintain system head pressure that will allow safe system operation
without indoor coil icing in colder outdoor ambients. The BAYLOAM103 will cycle the
condenser fan motor in order to achieve adequate operating head pressure. The control
is adjustable.
Evaporator Defrost Control - A device that is field installed on the system’s indoor coil
in order to prevent the system from running during the cooling cycle when the indoor coil
approaches or reaches a temperature in which frost will form on the coil surface. When
the indoor coil approaches a safe temperature for cooling operation, the control will close
and allow the outdoor unit to restart. This controller makes and breaks the control volt-
age to the condensing unit.
Quick Start Component - This component may be factory installed or offered as a field
installed accessory ( BAYKSKT***). A quick start kit consist of a capacitor with a high
microfarad rating and a potential relay. It is installed so that the start capacitor is wired in
parallel with the compressor’s run capacitor. Prior to start-up the potential relay contacts
are closed, therefore placing the start capacitor in the compressor circuit, as the com-
pressor motor reaches operating speed, electrical current flows through the potential
relay’s coil and the the relay contacts are opened, thus taking the start capacitor out of
the system until the next compressor start up.
Unit Base Size - Unit base size may be determined by looking at the cabinet size. This is
located on the unit dimension page in product data or the installation manual. Dimensions
are also noted in this document. However, for the most up to date information, the Instal-
lation manual and / or product data should be referenced.
Definitions and information:
Three phase products:

Section I - Off Season Cooling Operation:
The Trane XR models may be operated in the cooling mode to 45oF as shipped from the factory when
applied with an indoor TXV. Where required, these units, with appropriate accessories, may be
applied to operate at outdoor temperatures below 450F.
Please refer to the accessory table below when determining if the desired model unit will operate at the
specified conditions and required accessories
AY28X079: Cooling only
AY28X084: Heat pumps
Head Pressure Controller:
BAYLOAM103: Approved for heat pumps and cooling units
Evaporator Defrost Control Kits:
Compressor Crankcase Heaters:
Reciprocating Compressor: BAYCCHT300
Scroll Compressor: BAYCCHT301
Pg. 4
As noted in the above table, the XR13 outdoor units may be operated to 0oF if necessary, by applying
the BAYLOAM103 head pressure controller and other required accessories. The BAYLOAM103 is a
newly developed head pressure controller that cycles the OD fan as needed to maintain liquid line
temperature as set by the DIP switches located on the control. There is no need to change the outdoor
fan motor on approved products since the controller does not vary the frequency to the motor. For
more information publication number 18-HE46D1-1or latest version, should be consulted.
* Unit requires a compressor crankcase heater and start accessory only if it is not factory installed.
Check general specifications located in product data to determine if unit is equipped with factory
installed quick start components.
* *Solenoid valve required if:
1. Liquid line is one size larger than factory connection. (example: factory connection is 3/8” and the
existing liquid line is 1/2”) Please refer to publication 32-3009-03 or latest edition for approved line sizes.
2. Off cycle time will be longer than 30 minutes during low ambient cooling operation.
More Information:
Wind Shields:
Please refer to page 14 of this document for information regarding wind shields when low ambient cooling
operation is required.
Ambient Temperature in Cooling Mode Operation
Model
Family 45 F 30 F 0 F
2TTR3 As Shipped AY28X079 CCHT* BAYLOAM103 AY28X079 Quick Start
Accessory CCHT* Solenoid
Valve**
2TWR3 As Shipped AY28X084 CCHT* BAYLOAM103 AY28X084 Quick Start
Accessory CCHT*
4TTR3 As Shipped AY28X079 CCHT* BAYLOAM103 AY28X079 Quick Start
Accessory CCHT* Solenoid
Valve**
4TWR3 As Shipped AY28X084 CCHT* BAYLOAM103 AY28X084 Quick Start
Accessory CCHT*
2TTR4 As Shipped AY28X079 CCHT* Not Approved
2TWR4 As Shipped AY28X084 CCHT* Not Approved
4TTR4 As Shipped AY28X079 CCHT* Not Approved
4TWR4 As Shipped AY28X084 CCHT* Not Approved

Typical wiring when using the evaporator defrost control (EDC):
Cooling Split System and AY28X079 Evaporator Defrost Control
R
Y
G
W
B
Red (R)
Y
Y Low
Orange
Green (G)
White (W1)
White (W2)
White (W3)
Blue (B)
R
Y
O
G
W
X2
B
Red
Yellow
Orange
Brown / X2
Blue
EDR-1
EDC
EDR
Y
B
Red (R)
Y
Y Low
Green (G)
White (W1)
White (W2)
White (W3)
Blue (B)
EDC
Heat Pump Split System and AY28X084 Evaporator Defrost Control
Thermostat
Air handling unit
Thermostat
Pg. 5
Heat pump
unit
Air handling unit
Cooling
unit

SECTION II - Unit Mounting:
This section describes appropriate methods for mounting and securing the XR13 and XR14 style split
system cooling and heat pump units. However, if these units are to be mounted in a region where high
winds are an issue, please refer to the Trane BAYECMT001 extreme conditions mounting kit. In
seizmic zones the unit shall be secured according to local code; this may require a local P.E.’s stamp.
When mounting or securing Trane residential style condensing units and heat pumps please observe the
following.
1. Anytime the unit is to be supported from the edge, the supporting material must extend minimum two
inches beyond the perimeter of the unit’s base.
2. The mounting hole locations are molded in the basepan, however, must be drilled through.
a) Hole locations are identified on page 7 and 8 of this document as well as the unit installation guide.
3. Washers should be placed in between the fastener head and the basepan.
4. Trane recommends supporting the center of the unit with a cross member if unit is not mounted on
plate.
5. Base 2, 3, and 4 pans have four mounting hole locations.
6. Drill size / bolt diameter shall be 5/16”.
Drawings for illustration purposes only.
Pg. 6

If supporting the base pan from the perimeter, the support must extend under the base pan at least 2”. Trane recommends
supporting the middle of the base pan with a cross member.
support must extend 2” from the basepan perimeter
support center of unit
Pg 7
BASE PAN MOUNTING HOLE LOCATIONS
( location only, holes must be drilled )

BASE PAN MOUNTING HOLE LOCATIONS
( location only, holes must be drilled )
support must extend 2” from the basepan perimeter
support center of unit
support must extend 2” from the basepan perimeter
support center of unit
If supporting the base pan from the perimeter, the support must extend under the base pan at least 2”. Trane recommends
supporting the middle of the base pan with a cross member.
Pg 8

Section III - Minimum Operating Clearances
This section discusses installating the XR style condensing unit / heat pump where spacing is limited.
When installing Trane outdoor units in a location where clearance to other units, walls, fences, etc. is
limited, the concerns listed below must be addressed:
1. System Operation - Adequate airflow must be provided to and away from the condensing unit / heat
pump in order to enable appropriate heat transfer. If this is accomplished, head pressure will remain
within an effective operating range.
2. System Servicability - Sufficient working space must be allowed for the HVAC service technician to
properly maintain the condensing unit / heat pump. Furthermore, space must be allowed for major
component change out in the event of a failure. Working space is determined by the Local, State and
National Codes. (See National Electric Code Table 110.26 for explanation.)
3. Space Maintenance - Appropriate area must be allowed in order to maintain the ground area where
the units are positioned to prohibit debris from collecting on the panels, thus further providing
unobstructed airflow to the condensing unit.
3. State, Local Codes, and National Codes shall prevail. Check with the local jurisdiction before
installation to assure compliance.
Numerous projects require minimum clearances between outdoor units and adjacent walls, fences and other
units. The obstruction in question is usually one of the following:
1. One or more walls of an adjacent building.
2. Fences or barriers provided to reduce sound transmission or visually screen the equipment.
3. Other outdoor units in a multi-unit installation.
4. Acombination of the above.
5. Overhangs
The prime considerations involved in establishing minimum clearances are:
1.Adequate airflow to the outdoor coil with minimum recirculation.
2. Service access to the equipment.
3. Compliance with the National Electric Code and other applicable codes.
4. Design temperature - Design temperatures greater than 105F require additional consideration.
I. In order to assure that adequate airflow reaches the condensing unit, size free air passages at 300
Feet Per Minute maximum velocity. See condensing unit airflow performance on page 23 of this
document.
II. The importance of providing proper service access to equipment cannot be overemphasized. The HVAC
service technician’s job may be performed with greater ease and lower cost if adequate service space is
allowed.
III. Knowledge of the National Electric Code and other applicable codes for the job sight location is a
necessity in order to satisfy local inspectors. These codes are in place for service as well as safety.
IV. Be sure to read all provisions and footnotes contained in this document. When ambient temperatures
exceed 105F, more space may be required for minimum operating clearances.
Pg. 9

1. Installation of a single condensing unit / heat pump in a corner with free air space on top.
A) For locations where the design ambient temperature is below 105F:
1) 1.0 feet clearance on 2 sides - If shrubbery is to be placed by the unit other side, then allow 1.0
Feet minimum clearance from the unit
2) Service access side requires 3 feet minimum clearance. Consult Local, State, and National
Electric Codes for minimum service clearance.
B) For locations where the design ambient temperature exceeds 105F:
1) 1.5 feet clearance on 2 walls. - If shrubbery is to be placed by the unit other side, then allow 1.0
Feet minimum clearance from the unit.
2) Service access side requires 3 feet minimum clearance.
C) If unit is located in such a way that service panel is facing the wall
1) NEC requires 3 feet minimum clearance between the unit and the wall
a) This space may be increased to 3 1/2 feet. Consult the National Electric Code for more
information regarding minimum clearances for working spaces.
2. Installation of two or more units where two adjacent walls form a corner.
A) For locations where the design ambient temperature is below 105F:
1) Note the unit base size and obtain the minimum clearance values from the table below.
B) For locations where the design ambient temperature exceeds 105F:
1) 2.0 feet clearance from both walls.
2) 3.0 feet clearance in between units, unless service panels face each other. (if service panels
face each other, this clearance may be increased to 4 feet per NEC)
C) If unit’s are located in such a way that the service panels are facing the wall
1) NEC requires minimum 3 feet between the unit and the wall
a) This space may be increased to 3 1/2 feet. Consult the most current edition of the National
Electric Code for more information regarding minimum clearances for working spaces.
SERVICE ACCESS PANEL SIDE 3’minimum clearance
Service Panel
-1.0’-
min
-1.0’-
min
A
A
A
A2B 2B
Pg. 10
-1.0’-
min
3.0’ min 5 feet minimum unrestricted top
clearance shall be provided.
5 feet minimum unrestricted top
clearance shall be provided.
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2'0.1'0.1"63
3'2.1'2.1"63
4'5.1'4.1"63
minimum clearance table

3. Units surrounded on all four sides:
A. If installed unit(s) is / are surrounded by 2 walls and a solid fence, fence height on two sides shall be
no higher than the height of the unit. In this application knockouts or louvers shall be provided on two
sides minimum with free area to provide maximum 300 FPM velocity. Cutting a portion of the lower
fence on two sides to accomplish 300 FPM maximum velocity is acceptable provided debris, dirt, and
grass is prohibited from accumulating or growing to obstruct the opening. Refer to page 19 of this
document for outdoor unit airflow. Please refer to table below for minimum clearances.
A
A
A
AA
Service
Clearance*
Service
Clearance*
A
A
AAA
A
2B
2B
2B
A
123
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
123
123
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
123
SIngle Unit - Solid Fence Multiple Units Solid Fence
Solid Fence: If fence height is taller than unit(s), provide openings in fence that will provide maximum 300 FPM air velocity.
These openings shall be located at the lower portion of the fence. If acceptable, the fence may be raised to provide open
bottom clearance of fence height above the unit.
Service Clearance*
minimum clearance table
* If removable panels are used and acceptable to local inspection agency, the clearance to the removable
panel may be reduced to (1.5 X A)
These clearances apply in geographical locations in which the
maximum design outdoor dry bulb = 105F or less.
The measurement 2B indicates to multiply the dimension B
from the minimum clearance table by 2 in order to determine
the approprieate minimum distance between units.
5 feet minimum top clearance shall be provided.
1234567
1
23456
7
1234567
123456
1
2345
6
123456
123456
123456
opening size @
300 FPM maximum
velocity
Pg 11
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2'0.1'0.1"63
3'2.1'2.1"63
4'5.1'4.1"63

A) Refer to minimum clearance table in the lower corner of this page for clearances
B) National Electric Code requires 3 feet minimum (4 feet if certain conditions are present) clear-
ance between service access panel and adjacent unit. If service access panel faces the wall, the
required space between the the wall and the unit shall be minimum 3 feet. (May require as much as
3 1/2 feet)
C) Walls shall not be higher than top of units.
D) National, State, and Local Codes must be observed.
E) If design outdoor dry bulb exceeds 105F (40.6C) add 1.0 Ft. to all dimensions.
A
min**
A
min**
A
min**
A
min**
A
min**
A
min**
2B
min
2B
min
2B
min
2B
min
2B
min
2B
min
-3.0’-
min
-3.0’-
min
3.0’
min
3.0’
min
-3.0’-
min
3.0’
min
Service Access * Service Access *
Service Access * Service Access * Service Access *
* Units may be rotated in order that service access sides face each other
provided that 3 feet minimum clearance be maintained between the units.
In order to comply with NEC, this may increase to 4 feet minimum
clearance.
** If wall or fence is to be constructed around the entire perimeter of the
mechanical yard, Maintain minimum 1.5 feet clearance from the units.
The fence height shall not exceed that of the unit. It is recommended to
install louvers in the fence to allow no greater than 300 feet per minute
velocity. Consult the table on page 18 for unit airflow. Place louvers in the
lower section of the fence by each unit in order to provide air access to
each unit located by the fence. The lower portion of the fence may also be
cut in order to equal the calculated free area.
Pg. 12
A
min**
A
min**
A
min**
Service Access *
Service Access * Service Access * Service Access *
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2'0.1'0.1"63
3'2.1'2.1"63
4'5.1'4.1"63
minimum clearance table
4. Installation of multiple units on a pad or rooftop where the top clearance is open.
The measurement 2B
indicates to multiply
the dimension B from
the minimum clear-
ance table by 2 in or-
der to determine the
approprieate minimum
distance between units.

4. Installation of multiple units on a pad or rooftop where the top clearance is open.
A) Refer to minimum clearance table in the lower corner of this page for required clearances
B) National Electric Code requires 3 feet minimum (4 feet if certain conditions are present) clearance
between service access panel and adjacent unit. If service access panel faces the wall, the required
space between the wall and the unit shall be minimum 3 feet. (May require as much as 3 1/2 feet)
C) Walls / Fence height shall not be higher than top of units.
D) National, State, and Local Codes must be observed.
E) If design outdoor dry bulb exceeds 105F (40.6C) add 1.0 Ft. to all dimensions.
A
min**
A
min**
A
min**
A
min**
A
min**
A
min**
2B
min
2B
min
2B
min
2B
min
2B
min
2B
min
-3.0’-
min
-3.0’-
min
-3.0’-
min
-3.0’-
min
-3.0’-
min
-3.0’-
min
Service Access * Service Access * Service Access *
Service Access * Service Access * Service Access *
Service Access * Service Access * Service Access *
* Units may be rotated in order that service access sides face each other provided
that 3 feet minimum clearance be maintained between the units. In order to
comply with NEC, this may increase to 4 feet minimum clearance.
** If wall or fence is to be constructed around the entire perimeter of the
mechanical yard, Maintain minimum 1.5 feet clearance from the units. The fence
height shall not exceed that of the unit. It is recommended to install louvers in
the fence to allow no greater than 300 feet per minute velocity. Consult the table
on page 18 for unit airflow. Place louvers in the lower section of the fence by
each unit in order to provide air access to each unit located by the fence. The
lower portion of the fence may also be cut in order to equal the calculated free
area.
Pg. 13
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2'0.1'0.1"63
3'2.1'2.1"63
4'5.1'4.1"63
minimum clearance table
The measurement 2B
indicates to multiply
the dimension B from
the minimum clear-
ance table by 2 in or-
der to determine the
approprieate minimum
distance between units.

66
22-3237-02
UNIT
12" MIN.
2 1/2" MIN.
UNIT
12" MIN.
UNIT UNIT
SHIELD DESIGN FOR
HIGHLY DIRECTIONAL WINDS
SERVICE
ACCESS
AREA
SEE NOTES
SERVICE
ACCESS
AREA
SEE NOTES
SHIELD DESIGNED FOR
NON-DIRECTIONAL WINDS
REMOVEABLE PANEL
OR GATE
FOR SERVICE
PREVAILING
WIND DIRECTION
SHADOW BOX FENCE
33% MIN. FREE AREA
EACH SIDE
4" MINIMUM
24" MAXIMUM
2" MINIMUM
4" MAXIMUM
SOLID PANEL
Notes:
• Service access working clearance (3 feet) for electrical and refrigerant components must meet NEC Article 110-16
requirements and local codes.
Note:
Minimum working clearance must be in compliance with the National Electric Code. Currently,
the minimum clearance between a wood or suitable grounding material type fence requires
minimum 3 feet. If other material is used to form the windshield, the minimum space may be
increased to 3.5 feet. Please consult the 2002 or current Edition of the National Electric Code,
Article 110 for the most up to date information
Windshields:
If low ambient operation to 0F is required, windshields are a must in order to block prevailing
winds from impacting system performance at low outdoor temperatures.
Pg. 14
2005

Electrical Code Information
Compliance with Local, State, and National Codes is a must on every HVAC Installation. This page
discusses the criteria regarding minimum working spaces as defined in the 2005 National Electric
Code. The main concern is the safety of the HVAC service / maintenance person. Minimum working
clearances are specified in the National Electric Code (NEC) Article 110.26
For electrical equipment that from ground to power the voltage is 600 volts or less:
The National Electric Code specifically states that service area around electrical equipment shall provide
sufficient access, and shall be properly maintained in order to permit safe operation and maintenance of the
equipment. Table 110.26 as well as the figures beside the table describe the minimum clearance for proper
service and access to electrical equipment.
Trane residential and light commercial condensing units ranging from 1 to 6 ton require access to the side
service panel as indicated on the previous pages to gain access to the electrical controls.
Minimum Clear Distance
Condition 1 Condition 2 Condition 3
Nominal
Voltage to
Ground
0-150 900 mm (3 FT) 900 mm (3 FT) 900 mm (3FT)
151-600 900 mm (3FT) 1 M (3.5FT) 1.2 mm (4FT)
Note: Where the conditions are as follows
Condition 1 - Exposed live parts on one side and no live or grounded parts
on the other side of the working space, or exposed live parts on both sides
effectively guarded by suitable wood or other insulating materials. Insulated
wire or insulated busbars operating at not over 300 volts to ground shall not
be considered live parts
Condition 2 - Exposed live parts on one side and grounded parts on the
other side. Concrete, brick, or tile walls shall be considered as grounded.
Condition 3 - Exposed live parts on both sides of the work space (not
guarded as provided in Condition 1) with the operator between.
Table 110.26(A)(1) Working Clearances
Pg. 15
Reprinted with permission from NFPA 70-2005, National Electrical Code®, Copyright © 2004, National Fire
Protection Association. This reprinted material is not the complete and official position of the NFPA on the
referenced subject, which is represented only by the standard of it’s entirety.
National Electrical Code and NEC are registered trademarks of the National Fire Protection Association, Quincy, MA.
The table and figure below are excerpts from the National Electric Code 2002:
Condition 1
(3 ft min. for 151 - 600 V)
Condition 2
(Space would increase to 3 1/2 ft for 151 - 600 V)
Condition 3
(Space would increase to 4 ft for 151 - 600 V)

Pg. 16
Unit Dimensions
2TTR3 and 2TWR3
Unit Model Cabinet
Size ABCUnitModel
Cabinet
Size ABC
2TTR3018A1000AA 2 651 mm
25 5/8"
724 mm
28 1/2"
651 mm
25 5/8" 2TWR3018A1000AA 2 832 mm
32 3/4"
724 mm
28 1/2"
651 mm
25 5/8"
2TTR3024A1000AA 2 832 mm
32 3/4"
724 mm
28 1/2"
651 mm
25 5/8" 2TWR3024A1000AA 2 832 mm 32 3/4"
724 mm
28 1/2"
651 mm
25 5/8"
2TTR3030A1000AA 3 832 mm
32 3/4"
829 mm
32 5/8"
756 mm
29 3/4" 2TWR3030A1000AA 3 933 mm
36 3/4"
829 mm
32 5/8"
756 mm
29 3/4"
2TTR3036A1000AA 3 832 mm
32 3/4"
829 mm
32 5/8"
756 mm
29 3/4" 2TWR3036A1000AA 4 943 mm 37 1/8"
946 mm
37 1/4"
870 mm
34 1/4"
2TTR3042A1000AA 4 841 mm
33 1/8"
946 mm
37 1/4"
870 mm
34 1/4" 2TWR3042A1000AA 4 1045 mm 41 1/8"
946 mm
37 1/4"
870 mm
34 1/4"
2TTR3048A1000AA 4 1045 mm
41 1/8"
946 mm
37 1/4"
870 mm
34 1/4" 2TWR3048A1000AA 4 1045 mm
41 1/8"
946 mm
37 1/4"
870 mm
34 1/4"
2TTR3060A1000AA 4 1045 mm
41 1/8"
946 mm
37 1/4"
870 mm
34 1/4" 2TWR3060A1000AA 4 1045 mm 41 1/8"
946 mm
37 1/4"
870 mm
34 1/4"

Pg. 17
Unit dimensions
2TTR4 and 2TWR4
Unit Model Cabinet
Size A B C Unit Model Cabinet
Size ABC
2TTR4018A1000AA 3 832 mm
32 3/4"
829 mm
32 5/8"
756 mm
29 3/4" 2TWR4018A1000AA 3 832 mm 32 3/4"
829 mm
32 5/8"
756 mm
29 3/4"
2TTR4024A1000AA 3 832 mm
32 3/4"
829 mm
32 5/8"
756 mm
29 3/4" 2TWR4024A1000AA 3 933 mm
36 3/4"
829 mm
32 5/8"
756 mm
29 3/4"
2TTR4030A1000AA 3 933 mm
32 3/4"
829 mm
32 5/8"
756 mm
29 3/4" 2TWR4030A1000AA 4 841 mm 33 1/8"
946 mm
37 1/4"
870 mm
34 1/4"
2TTR4036A1000AA 3 933 mm
32 3/4"
829 mm
32 5/8"
756 mm
29 3/4" 2TWR4036A1000AA 4 943 mm
37 1/8"
946 mm
37 1/4"
870 mm
34 1/4"
2TTR4042A1000AA 4 943 mm
33 1/8"
946 mm
37 1/4"
870 mm
34 1/4" 2TWR4042A1000AA 4 1045 mm 41 1/8"
946 mm
37 1/4"
870 mm
34 1/4"
2TTR4048A1000AA 4 1045 mm
41 1/8"
946 mm
37 1/4"
870 mm
34 1/4" 2TWR4048A1000AA 4 1045 mm
41 1/8"
946 mm
37 1/4"
870 mm
34 1/4"
2TTR4060A1000AA 4 1045 mm
41 1/8"
946 mm
37 1/4"
870 mm
34 1/4" 2TWR4060A1000AA 4 1045 mm 41 1/8"
946 mm
37 1/4"
870 mm
34 1/4"

Pg. 18
Unit dimensions
4TTR3, 4TTR4, 4TWR3, and 4TWR4
Model Number Base
Size A B C Model Number Base
Size ABC
4TTR3018A1 3
832mm
32 3/4"
829mm
32 5/8"
756mm
29 3/4"
4TTR4018A1 3
832mm
32 3/4"
829mm
32 5/8"
756mm
29 3/4"
4TTR3024A1 3 4TTR4024A1 3
4TTR3030A1 3 4TTR4030A1 3
4TTR3036A1 3 933 mm
36 3/4"
829mm
32 5/8"
756mm
29 3/4" 4TTR4036A3 3 933 mm 36 3/4"
829mm
32 5/8"
756mm
29 3/4"
4TTR3042A1 4 841 mm
33 1/8"
946 mm
37 1/4"
870 mm
34 1/4"
4TTR4042A3 4 943 mm
37 1/8"
946 mm
37 1/4"
870 mm
34 1/4"
4TTR3048A1 4 4TTR4048A3 4 1045 mm
41 1/8"
946 mm
37 1/4"
870 mm
34 1/4"
4TTR3060A1 4 1045 mm
41 1/8"
946 mm
37 1/4"
870 mm
34 1/4" 4TTR4060A3 4
4TWR3018A1 3 730 mm
28 3/4"
829mm
32 5/8"
756mm
29 3/4"
4TWR4018A1 3 933 mm
36 3/4"
829mm
32 5/8"
756mm
29 3/4"
4TWR3024A1 3 4TWR4024A1 3 1035 mm
40 3/4"
829mm
32 5/8"
756mm
29 3/4"
4TWR3030A1 3 933 mm
36 3/4"
829mm
32 5/8"
756mm
29 3/4" 4TWR4030A1 3
4TWR3036A1 4 943 mm
37 1/8"
946 mm
37 1/4"
870 mm
34 1/4"
4TWR4036A3 4 943 mm
37 1/8"
946 mm
37 1/4"
870 mm
34 1/4"
4TWR3042A1 4 4TWR4042A3 4
1045 mm
41 1/8"
946 mm
37 1/4"
870 mm
34 1/4"
4TWR3048A1 4 1045 mm
41 1/8"
946 mm
37 1/4"
870 mm
34 1/4"
4TWR4048A3 4
4TWR3060A1 4 4TWR4060A3 4

Required Opening = CFM / 300 FPM
Example:
Given:
Qty of 4 units in a mechanical yard, surrounded by a fence. Units are 2TWR3048A1 -
Required:
Determine free air opening space required in fence -
Solution:
4400 CFM X Qty of 4 = 17,600 CFM
17600 CFM / 300 FPM = 58.67 square feet
Round 58.67 to 59 square feet of free air opening in the 4 fence sections surrounding the mechanical yard.
*Table produced August 2006. For the most current information, please refer to specific equipment Product
Data.
Pg. 19
XR13 and XR14 Outdoor Unit Airflow Table
2TTR3 / 2TWR3 2TTR4 / 2TWR4 4TTR3 / 4TWR3 4TTR4 / 4TWR4
Unit Model Number CFM Unit Model Number CFM Unit Model Number CFM Unit Model Number CFM
2TTR3018A1 1565 2TTR4018A1 2000 4TTR3018A1 3010 4TTR4018A1 2250
2TTR3024A1 2500 2TTR4024A1 2800 4TTR3024A1 3160 4TTR4024A1 2725
2TTR3030A1 3320 2TTR4030A1 3100 4TTR3030A1 3160 4TTR4030A1 2900
2TTR3036A1 4400 2TTR4036A1 3100 4TTR3036A1 3160 4TTR4036A1 3100
2TTR3042A1 4400 2TTR4042A1 4400 4TTR3042A1 4610 4TTR4042A1 4150
2TTR3048A1 4800 2TTR4048A1 4400 4TTR3048A1 4610 4TTR4048A1 4150
2TTR3060A1 4800 2TTR4060A1 4400 4TTR3060A1 4610 4TTR4060B1 4150
2TWR3018A1 1565 2TWR4018A1 2230 4TWR3018A1 3170
2TWR3024A1 2485 2TWR4024A1 2835 4TWR3024A1 3170 4TWR4024A1 2710
2TWR3030A1 2800 2TWR4030A1 3915 4TWR3030A1 3170 4TWR4030A1 3200
2TWR3036A1 4400 2TWR4036A1 4100 4TWR3036A1 4820 4TWR4036A1 4100
2TWR3042A1 4400 2TWR4042A1 4244 4TWR3042A1 4820 4TWR4042A1 4200
2TWR3048A1 4400 2TWR4048A1 4185 4TWR3048A1 4820 4TWR4048A1 4200
2TWR3060A1 4960 2TWR4060A1 4250 4TWR3060A1 4820 4TWR4060A1 4090

Pg. 20
Trane
6200 Troup Highway
Tyler, TX 75707
http://www.trane.com
Literature Order Number
File Number SSC-APG002-EN 08/06
Supersedes XR-APG05-EN 09/04
Stocking Location
Since Trane has a policy of continuous product improvement, it reserves the right to change
design and specifications without notice