Through the years, Trane has designed and developed the most complete line
of Packaged Rooftop products available in the market today. Trane was the
first to introduce the Micro—microelectronic unit controls—and has continued
to improve and revolutionize this design concept.
The ReliaTel control platform offers the same great features and functionality
as the original Micro, with additional benefits for greater application flexibility.
Voyager continues to provide the highest standards in quality and reliability,
comfort, ease of service, and the performance of Trane light commercial
products.
Trane customers demand products that provide exceptional reliability, meet
stringent performance requirements, and are competitively priced. Trane
delivers with Voyager.
Voyager features cutting edge technologies: reliable compressors, Trane
engineered ReliaTel controls, computer-aided run testing, and Integrated
Comfort™ Systems. So, whether you’re the contractor, the engineer, or the
owner you can be certain Voyager Products are built to meet your needs.
•2” throwaway filters provided
on 12½-25 ton units
•5-year Limited Compressor
Warranty (12½-17½ tons); 1 year
on 20 & 25 tons
•5 year Limited Heat Exchanger
(12½ - 17½ tons) 1 year on 20 &
25 tons
•1-year Limited Parts Warranty
•Anti-Short Cycle Timer
•Belt Drive Motors
•Colored and Numbered Wiring
•Crankcase Heaters
•Dedicated Airflow
•Easy Access Low Voltage
Terminal Board (LTB)
•Foil-Faced and Edge Captured
Insulation
•High Efficiency Drum and Tube
Heat Exchanger
•High Efficiency Gas Heat with
Hot Surface Ignition
•High Pressure Cutout
•IAQ Sloped Condensate Drain
Pan
•Liquid Line Refrigerant Drier
•Low Ambient Cooling to 0°F
•Operating Charge of R-22
•Patented Hybrid Condenser Coil
for easy cleaning
•Provisions for Through-the-Base
Gas and Condensate Drain
Connections
•Quick Access Panels
•Quick Adjust Idler Arm Pulley
•ReliaTel Microprocessor
Controls
•Single Point Power
•Single Side Service
•Standardized Components
•Trane built Scroll Compressors
•U-shaped Airflow Pattern
Options
Factory Installed Options17*
•2” Pleated Filters
•Black Epoxy Pre-Coated Coils
•Dehumidification Option
•Differential Pressure Switches
•High Efficiency Motors
•Hinged Access Doors
•Novar Return Air Sensor
•Novar Unit Controls
•Powered or Unpowered
Convenience Outlet
•Stainless Steel Heat Exchanger
with 10 year warranty
•Supply and/or Return Air Smoke
Detector
4,13
•Thermal Expansion Valve
•Through the Base Electrical
Access
•Through the Base Electrical with
Circuit Breaker
•Through the Base Electrical with
Disconnect Switch
Factory* or Field Installed Options
•Barometric Relief
•Clogged Filter/Fan Failure
Switch
4,7
•Discharge Air Sensing Kit
•Economizer (Downflow)
•Electric Heaters
•Frostat
3,4,7
•LonTalk® Communications
Interface (LCI)
•Oversized Motors
•Reference or Comparative
Enthalpy
5,7
•Tool-less Hail Guards
•Trane Communications Interface
(TCI)
2,7
*Some Factory Installed Options
(FIOPS) available for Downflow Air
Discharge units only. Please verify
with ordering system for availability.
7,3
7
3,4,16
7
9
8
6
7
16
14,15
10,14,15
17
4,7
1
7,11 ,15
7
7
7
Explanation of Notes 1-17 located on
page following Model Number
Description.
Field Installed Options
•CO
Sensing
2
•Digital Display Zone Sensor
•Dual Thermistor Remote Zone
Sensor
•Economizer (Horizontal)
•High Altitude Kit
•High and Low Static Drive Kits
•Humidity Sensor
•Low Static Drive
•LP Conversion Kit
•Manual Outside Air Damper
•Motorized Outside Air Dampers
•Powered Exhaust
•Quick Start Kit
•ReliaTel Options Module
12
•Remote Potentiometer
•Roof Curb (Downflow Only)
•Thermostat
•Ventilation Override Accessory
4
•Zone Sensors and Remote Zone
Sensors
Other Benefits
•Cabinet design ensures water
integrity
•Ease of Service, Installation and
Maintenance
•Mixed model build enables
“fastest in the industry” ship
cycle times
•Outstanding Airflow Distribution
•ReliaTel Controls benefits
•Unmatched Product Support
4RT-PRC024-EN
Features and Benefits
Unmatched Support
Trane Sales Representatives are a
Support Group that can assist you
with:
–Product
– Application
– Service
– Training
– Special Applications
– Specifications
– Computer Programs and
much more
Standard Features
Anti-Short Cycle Timer (Standard
with ReliaTel)
Provides a 3 minute minimum “ON”
time and 3 minute “OFF” time for
compressors to enhance compressor
reliability by assuring proper oil
return.
Colored And Numbered Wiring
Save time and money tracing wires
and diagnosing the unit.
Compressors
Voy ager
contains the
best compressor
technology
available to
achieve the
highest possible
performance.
Dual
compressors
are outstanding for humidity control,
light load cooling conditions and
system back-up applications. Dual
compressors are available on all
models.
Condenser Coil
Voyager boasts a patent-pending
1+1+1 condenser coil, permanently
gapped for easy cleaning.
Controls – ReliaTel
ReliaTel microprocessor controls
provide unit control for heating,
cooling and ventilating utilizing input
from sensors that measure indoor
and outdoor temperature and other
zone sensors. ReliaTel also provides
outputs for building automation
systems and expanded diagnostics.
For a complete list of ReliaTel
offerings, refer to the “Other
Benefits” section within the Features
and Benefits section of this catalog.
Conversionless Units
The dedicated design units (either
downflow or horizontal) require no
panel removal or alteration time to
convert in the field — a major cost
savings during installation.
Horizontal units come complete with
duct flanges so the contractor
doesn’t have to field fabricate them.
These duct flanges are a time and
cost saver.
Crankcase Heaters
These band or insertion heaters
provide improved compressor
reliability by warming the oil to
prevent migration during off-cycles
or low ambient conditions. These are
standard on all Voyager models.
Efficiencies
Standard or High Efficiency Cooling
available.
Easy Access Low Voltage
Terminal Board
Voy a g e r ’s Low
Voltage Terminal
Board is external
to the electrical
control cabinet. It
is extremely easy
to locate and
attach the
thermostat wire
and test operation
of all unit
functions. This is
another cost and time saving
installation feature.
Foil Faced Insulation
All panels in
the evaporator
section of the
unit have
cleanable foilfaced
insulation. All
edges are
either captured
or sealed to
ensure no
insulation
fibers get into
the airstream.
Heat Exchanger - Drum and Tube
The cabinet features a drum and tube
heat exchanger that is manufactured
using aluminized steel with stainless
steel components for maximum
durability. The requirement for cycle
testing of heat exchangers is 10,000
cycles by ANSI Z21.47. This is the
standard required by both UL and
AGA for cycle test requirements.
Trane requires the design to be
tested to 2½ times this current
standard. The drum and tube design
has been tested and passed over
150,000 cycles, which is over 15
times the current ANSI cycling
requirements.
Forced Combustion Blower
Negative Pressure Gas Valve
Hot Surface Ignitor
Heat Exchanger
The negative pressure gas valve will
not allow gas flow unless the
combustion blower is operating. This
is one of our unique safety features.
The forced combustion blower
supplies pre-mixed fuel through a
single stainless steel burner screen
into a sealed drum where ignition
takes place. It is more reliable to
operate and maintain than a multiple
burner system.
The hot surface ignitor is a gas
ignition device which doubles as a
safety device utilizing a continuous
test to prove the flame. The design is
cycle tested at the factory for quality
and reliability.
RT-PRC024-EN5
Features and Benefits
Our gas/electric rooftops exceed all
California seasonal efficiency
requirements and perform even
better than the California NOx
emission requirements.
Low Ambient Cooling
All Voyager microprocessor units
have cooling capabilities down to 0°F
as standard.
Low Voltage Connections
The wiring of the low voltage
connections to the unit and the zone
sensors is as simple as 1-1, 2-2, and
3-3. This simplified system makes it
easy for the installer to wire.
Single Side Service
Single side service is standard on all
units.
Sloped Drain Pans
Every Voyager unit has a noncorrosive, sloped drain pan made of
pre-painted steel and standard on all
units.
Standardized Components
Components are placed in the same
location on all Voyager units.
Familiarize yourself with one Voyager
and you are familiar with every
Voy ager.
Due to standardized components
throughout the Voyager line,
contractors/owners can stock fewer
parts.
Through the Base Condensate
Every unit includes provisions for
through the base condensate drain
connections. This allows the drain to
Motors
All indoor fan motors are belt drive
as standard.
be connected through the roof curb
instead of a roof penetration.
Variety of Options*
Pressure Cutouts
Low and high pressure cutouts are
standard on all Voyager models.
Quick-Access Panels
Remove three
or more
screws for
access to the
standardized
internal
components
and wiring.
QuickAdjust
Slider Plate
With the Quick-Adjust Slider Plate,
the belt and sheaves can be quickly
adjusted without moving the
mounted fan motor. The result is a
major savings in time and money.
Single Point Power
A single electrical connection powers
the unit.
6RT-PRC024-EN
Factory Installed Options
Black Epoxy Pre-Coated Coils
The pre-coated coils are an
economical option for protection in
mildly corrosive environments.
Circuit Breaker (Required with
Through- the-Base Electrical)
This option is a factory installed
thermal magnetic, molded case,
HACR Circuit Breaker with provisions
for through the base electrical
connections. Available on all
downflow models.
Disconnect Switch (Required
with Through-the-Base Electrical)
Factory
installed 3-pole,
molded case,
disconnect
switch with
provisions for
through the
base electrical
connections are
available.
Available on all downflow models.
Codes require a method of assured
unit shutdown for servicing. Fieldinstalled disconnects sometimes
interfere with service access. Factory
installation of unit disconnects
reduces costs, assures proper
mounting and provides the
opportunity to upgrade to unit circuit
breaker protection.
Dehumidification (Hot Gas
Reheat) Option
This option allows for
increased outdoor air
ventilation. It reduces
humidity levels while
increasing comfort
level in the air space.
Cooling can operate
without a demand for
dehumidification.
The hot gas reheat
coil is designed to
deliver maximum
reheat temperatures.
Hinged Access Doors
These doors
permit easy
access to the
filter, fan/
heat, and
compressor/
control
sections.
They reduce the potential roof
damage from screws or sharp access
door corners.
Motors
Factory or field installed oversized
motors available for high static
applications are available.
High Efficiency motors are also
available with efficiency ratings from
86.5 up to 91.0. It is not available for
all models.
Novar Unit Controls
Novar 3051 and 2024 are available
for Voyager Cooling and Gas/Electric
models.
Powered or Unpowered
Convenience Outlet
This option is a GFCI, 120v/15amp, 2
plug, convenience outlet, either
powered or unpowered.
Features and Benefits
This option can only be ordered
when Through the Base Electrical
with either the Disconnect Switch or
Circuit Breaker option is ordered.
This option is available on all
downflow models.
Stainless Steel Heat Exchanger
The optional stainless steel heat
exchanger is constructed of 304
stainless steel. It is resistant to
corrosion and oxidation and easy to
clean.
The high strength to weight ratio
allows for high ventilation rates with
gas units. It is an excellent option to
compliment the dehumidification
option as a high outside air
ventilation unit.
With this option, a 10-year stainless
steel heat exchanger warranty is
standard.
Supply and/or Return Air Smoke
Detector
With this option
installed, if smoke is
detected, all unit
operation will be shut
down. Reset will be
manual at the unit.
Return Air Smoke
Detectors require
minimum allowable
airflow when used
with certain models.
Thermal Expansion Valve
Available for a wider range of
applications. This is available on high
efficiency models.
Through-the-Base Electrical
Utility Access
An
electrical
service
entrance
shall be
provided
allowing
electrical
access for
both
control and main power connections
inside the curb and through the base
of downflow units, and through the
front of horizontal units. Option will
allow for field installation of liquid-
tight conduit and an external field
installed disconnect switch.
Factory provided through the base
openings simplify wiring and piping.
Because these utility openings
frequently minimize the number of
roof penetrations, the integrity of
roofing materials is enhanced.
Two-Inch Pleated Filters
2” pleated media filters are offered
as an option on all Voyager units for
jobs with enhanced Indoor Air
Quality (IAQ) requirements.
*Refer to Model Number Description
for option availability.
Factory or Field Installed
Options*
Barometric Relief
Designed to be used on downflow
units, barometric relief is an
unpowered means of relieving
excess building pressure.
Clogged Filter/Fan Failure Switch
A dedicated differential pressure
switch is available to achieve active
fan failure indication and/or clogged
filter indication.
These sensors allow a zone sensor
service light or Integrated Comfort
System to indicate a dirty filter or a
fan that’s not working. The field
installation charges for these
valuable feedback devices often
eliminate them from consideration.
Factory installation can make such
features a good investment.
Discharge Air Sensing Kit
Provides true discharge air sensing in
heating models. The kit is functional
only with the ReliaTel Options
Module.
Electric Heaters
Electric heat modules are available
within the basic unit. If ordering the
Through the Base Electrical option
with an Electrical Heater, the heater
must be factory installed.
Fresh Air Options – Dampers and
Economizer
0 - 25% manual or 0 - 50% motorized
outside air hoods are available.
Economizers are equipped with
either dry bulb or reference or
comparative enthalpy sensing. These
economizers provide free cooling as
the outdoor temperature and/or
humidity decreases. Correctly
installed, they offer a valuable energy
savings. Factory-installed
economizers save time and ensure
proper installation.
Frostat
This capillary bulb embedded in the
face of the evaporator coil monitors
coil temperature to prevent
evaporator icing and protect the
compressor. Recommended for
applications with low leaving air
temperatures, low airflow and or
high latent load applications.
LonTalk® Communications
Interface
The LonTalk communications
interface allows the unit to
communicate as a Tracer™LCI-V
device or directly with generic
LonTalkNetwork Building Automation
System Controls.
Oversized Motors
Factory or field installed oversized
motors available for high static
applications.
Reference or Comparative
Enthalpy
Measures and communicates
humidity while maximizing comfort
control.
Tool-less Hail Guards
Tool-less, hail protection quality coil
guards shall be either factory or fieldinstalled for condenser coil
protection. This option protects the
condenser coil from vandalism and/
or hail damage.
RT-PRC024-EN7
Features and Benefits
Trane Communication Interface
(TCI)
Available factory or field installed.
This module when applied with the
ReliaTel™ easily interfaces with
Trane’s Integrated Comfort™ System.
*Refer to Model Number Description
for option availability.
Field Installed Options*
CO2 Sensing
The CO2 sensor has the ability to
monitor space occupancy levels
within the building by measuring the
parts per million of CO
Dioxide) in the air. As the CO
increase, the outside air damper
modulates to meet the CO2 space
ventilation requirements. The CO
sensor kit is available as a field
installed accessory.
Digital Display Zone Sensor
The Digital LCD (Liquid Crystal
Display) zone sensor has the look and
functionality of standard zone
sensors. This sensor should be
utilized with ReliaTel™ controls.
Dual Thermistor Remote Zone
Sensor
This sensor will reduce the total
number of remote sensors to obtain
space temperature averaging. This
sensor should be utilized with
ReliaTel controls.
High Altitude Kit
Previously a Canadian Agency
requirement for units applied about
2000 feet, it is not required by the
U.S. Domestic contractors should
consult with local authority on best
practice. Devates gas orifices by 10%.
High Static Drive
Available on many models, this high
static drive accessory extends the
capability of the standard motor.
Avoid expensive motors and
operating costs by installing this
optimized sheave accessory.
(Carbon
2
2
levels
2
Humidity Sensor/Humidistat
Used in conjunction with our
Dehumidification (Hot Gas Reheat)
units to provide outstanding
humidity control and comfort.
Humidity sensors can be wall or duct
mounted and set for levels between
40% and 60%.
LP Conversion Kit
Provided for field conversion of gas/
electric units from Natural gas to
Propane.
Powered Exhaust Option
This option is available on downflow
units and provides exhaust of the
return air, when using a downflow
economizer, to maintain proper
building pressurization. Great for
relieving most building
overpressurization problems.
Remote Potentiometer
When properly installed in the
economizer control circuitry, this
accessory provides a remote variable
resistance to enable the operator to
adjust the minimum damper
position.
Roof Curbs
Available for downflow units. Only
two roof curbs for the entire Voyager
line simplifies curb selection.
Static Drive Accessories
Available on many models, this high
and low static drive accessories
extend the capability of the standard
motor. Avoid expensive motors and
operating costs by installing this
optimized sheave accessory.
Ventilation Override Accessory
With the Ventilation Override
Accessory installed, the unit can be
set to transition to up to 3 different
pre-programmed sequences for
Smoke Purge, Pressurization, and
Exhaust. The transition occurs when
a binary input on the RTOM is closed
(shorted). This would typically be a
hard wired relay output from a
smoke detector or fire control panel.
The ventilation override kit is
available as a field installed
accessory.
Zone Sensors/Thermostats
Available in programmable,
automatic and manual styles.
*Refer to Model Number Description
for option availability.
Other Benefits
Airflow Distribution
Airflow is outstanding. The Voyager
can replace an older machine with
old ductwork and, in many cases,
improve the comfort through better
air distribution. The U-shaped airflow
allows for improved static
capabilities.
Cabinet Integrity
For added water integrity, Voyager
has a raised 1 1/8" lip around the
supply and return of the downflow
units to prevent water from blowing
into the ductwork.
Easy to Install, Service and
Maintain
Because today’s owners are very
cost-conscious when it comes to
service and maintenance, the Trane
Voyager was designed with direct
input from service contractors. This
valuable information helped to
design a product that would get the
serviceman off the job quicker and
save the owner money. Voyager does
this by offering outstanding standard
features enhanced by a variety of
factory and field installed options,
multiple control options, rigorously
tested proven designs and superior
product and technical support.
ReliaTel™ Controls
ReliaTel controls provide unit control
for heating, cooling and ventilating
utilizing input from sensors that
measure outdoor and indoor
temperature.
8RT-PRC024-EN
Features and Benefits
ReliaTel Control Logic Enhances
Quality and Reliability
—prevents the unit from short
cycling, considerably improving
compressor life.
—ensures that the compressor will
run for a specific amount of time
which allows oil to return for better
lubrication, enhancing the reliability
of the compressor.
Voyager with ReliaTel reduces the
number of components required to
operate the unit, thereby reducing
possibilities for component failure.
ReliaTel Makes Installing and
Servicing Easy
ReliaTel eliminates the need for field
installed anti-shortcycle timer and
time delay relays. ReliaTel controls
provide these functions as an integral
part of the unit. The contractor no
longer has to purchase these controls
as options and pay to install them.
ReliaTel™
The wiring of the low voltage
connections to the unit and the zone
sensors is as easy as 1-1, 2-2, and 3-3.
This simplified system makes wiring
easier for the installer.
ReliaTel Makes Testing Easy
ReliaTel requires no special tools to
run the Voyager unit through its
paces. Simply place a jumper
between Test 1 and Test 2 terminals
on the Low Voltage Terminal Board
and the unit will walk through its
operational steps automatically.
The unit automatically returns
control to the zone sensor after
stepping through the test mode a
single time, even if the jumper is left
on the unit.
As long as the unit has power and
the “system on” LED is lit, ReliaTel is
operational. The light indicates that
the controls are functioning properly.
ReliaTel features expanded
diagnostic capabilities when utilized
with Trane Integrated Comfort™
Systems.
Some zone sensor options have
central control panel lights which
indicate the mode the unit is in and
possible diagnostic information (dirty
filters for example).
Other ReliaTel Benefits
The ReliaTel built-in anti-shortcycle
timer, time delay relay and minimum
“on” time control functions are
factory tested to assure proper
operation.
ReliaTel softens electrical “spikes” by
staging on fans, compressors and
heaters.
Intelligent Fallback is a benefit to the
building occupant. If a component
goes astray, the unit will continue to
operate at predetermined
temperature setpoint.
Intelligent Anticipation is a standard
ReliaTel feature. It functions
continuously as ReliaTel and zone
sensor(s) work together in harmony
to provide much tighter comfort
control than conventional electromechanical thermostats.
The same ReliaTel Board fits all
Voyager Packaged Gas/Electrics,
Cooling, and Heat Pump models.
This provides standardization of
parts for contractors. Less money is
tied up in inventory with ReliaTel.
VariTrac – Building Automation
System
When Trane’s changeover VAV
System for light commercial
applications is coupled with Voyager,
it provides the latest in technological
advances for comfort management
systems and can allow thermostat
control in every zone served by
Var iTra c.
TM
VariTr ac
Rigorous Testing
All of Voyager’s designs were
rigorously rain tested at the factory
to ensure water integrity.
Actual shipping tests were
performed to determine packaging
requirements. Units were test
shipped around the country to
determine the best packaging.
Factory shake and drop tests were
used as part of the package design
process to help assure that the unit
arrives at the job site in top
condition.
Rigging tests include lifting a unit
into the air and letting it drop one
foot, assuring that the lifting lugs and
rails hold up under stress.
We perform a 100% coil leak test at
the factory. The evaporator and
condenser coils are leak tested at 200
psig and pressure tested to 450 psig.
All parts are inspected at the point of
final assembly. Sub-standard parts
are identified and rejected
immediately.
Every unit receives a 100% unit run
test before leaving the production
line to make sure it lives up to
rigorous Trane requirements.
Voyager units incorporate either a
one piece top or the Trane-Tite-Top
3
(T
). Each part of the top (either two
or three pieces) overlaps in such a
way that water cannot leak into the
unit. These overlapped edges are
gasketed and sealed to ensure
superior water integrity.
RT-PRC024-EN9
Features and Benefits
Factory Installed Options
Figure 1.Voyager Factory Installed Options
10RT-PRC024-EN
Application Considerations
Application of this product should be
within the cataloged airflow and
cooling considerations.
Barometric Relief
This product line offers an optional
barometric relief damper for use in
conjunction with economizer option.
This accessory consists of gravity
dampers which open with increased
pressure. As the building air
pressure increases, the pressure in
the unit return air section also
increases, opening the dampers and
relieving the conditioned space.
Note: The effectiveness of
barometric relief damper
during economizing
operation is system related.
Note: Pressure drop of the return
air system should be
considered to control
building pressurization.
Black Epoxy Coil
The coils are manufactured with a
thermoset, vinyl coating that is
bonded to the aluminum fin stock
prior to the fin stamping process.
These coils are an economical option
for protection in mildly corrosive
environments.
Note: Not to be used where
seacoast applications exist.
Clearance Requirements
The recommended clearances
identified with unit dimensions
should be maintained to ensure
adequate serviceability, maximum
capacity and peak operating
efficiency. Actual clearances which
appear inadequate should be
reviewed with the local Trane sales
personnel.
Heating Operation
The heat exchanger is manufactured
with aluminized steel. To prevent
condensation within the heat
exchanger, do not exceed 50%
outside air or a minimum mixed air
temperature of 40°F.
Optional Stainless Steel Heat
Exchanger
The optional stainless steel heat
exchanger is manufactured with 304
stainless steel. To prevent corrosion
and prolong heat exchanger
reliability, the minimum mixed air
temperature allowed across the heat
exchanger is 20°F.
The stainless steel heat exchanger
option is an excellent option that
compliments the dehumidification
package. Whenever high outside air
or outside applications exist, these
options should be utilized.
Low Ambient Cooling
The Voyager™ line features, with
ReliaTel™ microprocessor controls,
low ambient cooling down to 0°F.
The following options need to be
included/considered when low
ambient applications are required:
continuous fan operation, crankcase
heaters (standard), thermal
expansion valves, frostat.
Contact your local Trane
Representative for more assistance
with low ambient cooling
applications.
Unit Pitch
These units have sloped condensate
drain pans. Units must be installed
level. Any unit slope must be toward
access side of the unit.
RT-PRC024-EN11
Condensate Trap
The evaporator is a draw-thru
configuration. A trap must be field
provided prior to start-up on the
cooling cycle.
Selection Procedure
Cooling Capacity
Note: Cooling Capacity Procedure
is the same for cooling (TC*)
and gas/electric (YC*).
Step 1.
Calculate the building's total and
sensible cooling loads at design
conditions. Use the Trane calculation
methods or any other standard
accepted method.
As a starting point, a rough
determination must be made of the
size of the unit. The final selection
will be made after examining the
performance at the given conditions.
Divide the total cooling load by
nominal BTUH per ton (12 MBh per
ton); then round up to the nearest
unit size.
180 MBh / 12 MBh = 15.0 tons
Step 3.
Ta bl e 7 shows that a TCD180B4 has a
gross cooling capacity of 184 MBh
and 130 MBh sensible capacity at
6000 cfm and 95 DB outdoor
ambient with 80 DB, 67 WB air
entering the evaporator.
To Find Capacity at Intermediate
Conditions Not in the Table.
When the design conditions are
between two numbers that are in the
capacity table, interpolation is
required to approximate the
capacity.
Note: Extrapolation outside of the
table conditions is not
recommended.
Step 4.
In order to select the correct unit
which meets the building's
requirements, the fan motor heat
must be deducted from the gross
cooling capacity. The amount of heat
that the fan motor generates is
dependent on the effort by the motor
- cfm and static pressure. To
determine the total unit static
pressure you add the external static
pressure to the additional static
related by the added features:
External Static Duct System0.49 wg
Standard Filter 1 in. from
Tab le 5 4
Economizer from Table 56
Tab le 5 4 (100% Return Air)
Electric Heater Size 36 kW
from Tab l e 5 4
(reference "Heating Capacity" section on
this page for determination of heater size).
No additional static add for gas/heat
exchanger.
Total Static Pressure0.60 wg
0.10 wg
0.04 wg
0.07 wg
Note: The Evaporator Fan
Performance Ta bl e 2 4 has
already accounted for the
pressure drop for standard
filters and wet coils (see note
below Ta bl e 2 4 ). Therefore,
the actual total static
pressure is 0.60 -0.10 (from
Ta bl e 5 4 = 0.50 wg).
With 6000 cfm and 0.50 wg. Ta b le 2 4
shows 2.56 bhp for this unit. Note
below the table gives a formula to
calculate Fan Motor Heat,
3.15 x bhp = MBh.
3.15 x 2.56 = 8.06 MBh.
Now subtract the fan motor heat
from the gross cooling capacity of
the unit:
Net Total Cooling Capacity
= 184 MBh - 8.06 = 175.9 MBh.
If the performance will not meet the
required load of the building -total or
sensible cooling load, try a selection
at the next higher size unit.
Heating Capacity
Note: Heating capacity procedures
DIFFER for cooling (TC*) and
gas/electric (YC*) units.
Step 1.
Calculate the building heating load
using the Trane calculation form or
other standard accepted method.
Step 2.
Size the system heating capacity to
match the calculated building
heating load. The following are
building heating requirements:
TC* cooling units:
460 volt/3 phase Power Supply
Total heating load of 115.0 MBH
6000 cfm
The electric heat accessory
capacities are listed in Ta bl e 5 6.
From the table, a 36 kw heater will
deliver 122.94 MBh at 480 volts. In
order to determine capacity at 460
volts, the heater voltage correction
factor from Ta bl e 5 7 must be used.
Therefore, 122.94 MBh x .94 (voltage
correction factor) = 115.6 MBh.
YC* gas/electric: Fuel natural gas
total heating load of 195 MBh. Table
24 shows 250 MBh and 350 MBh
input models. The output capacities
of these furnaces are 203 MBh and
284 MBh respectively. The low heat
model with 203 MBh output best
matches the building requirements.
Air Delivery Selection
Note: Air Delivery procedures is
the same for cooling (TC*)
and gas/electric (YC*) units.
External static pressure drop
through the air distribution system
has been calculated to be 0.50 inches
of water. From Ta bl e 5 4 static
pressure drop through the
economizer is 0.04 and the 36 kw
heater is 0.07 inches of water (0.49 +
0.04 + 0.07). Enter Ta bl e 5 4 for a
TCD180B4 at 6000 cfm and 0.50
static pressure. The standard motor
at 777 rpm will give the desired
airflow at a rated bhp of 2.71.
12RT-PRC024-EN
Selection Procedure
Dehumidification Selection
Note: Dehumidification selection
procedure is the same for
both cooling (TCD) and gas/
electric (YCD) models.
Determine normal unit
cooling and heating
capacities as previously
described in the selection
procedures on prior page.
Typical 20 ton TFD241C
6400 cfm Total Supply airflow
2560 cfm Outside Air (40%)
3840 cfm Return Air
0.41" External Static Pressure
OA Conditions
Part load day and raining
68°F db
67°F wb
66.5 dp
95% RH
RA' conditions
75°F db
63°F wb
52% RH
55.9 dp
Step 1:
Determine the mixed/entering air
condition (MA)
MA = (% outside air*outside air
drybulb temperature) + (% return
air*return air dry-bulb temperature)
MA = (0.40*68°F) + (0.60*75°F)
MA = 72.20°F db
Note: Repeat for wet-bulb
temperature (wb).
Plot on psychrometric chart.
MA
72.2°F db
64.7°F wb
Step 2:
Determine the additional static
pressure drop for a reheat unit
Ta bl e 5 4 shows a static pressure drop
of 0.35" for the reheat coil and an
additional .04 for the mandatory 2"
pleated filters required when
ordering the dehumidification option.
Total static pressure=
1.0 + 0.035 + 0.04 = 1.075
(
≅1.1 for manual calculations)
Do not forget to also add any
additional static from other
accessories.
Ta bl e 4 5 (airflow table for 20 ton
dehumidification units) indicates that
a standard motor and drive is needed
for this airflow and static pressure
range.
68°F DB,
OA
67°F WB
75°F DB,
RA
52% RH
MA
72.2°F DB
65°F WB
SA'
46.6°F DB
46.0°F WB
SA
72.2°F D B
57°F WB
38% RH
SA'
REHEAT
OA
MA
RA
SA
SA
Figure 2.Psychrometric Chart
Step 3a:
Determine leaving evaporator
temperature (SA')
Leaving Evaporator Temperature =
SA'
Utilizing the manual Cooling Capacity selection method as
previously described, find the leaving
evaporator temperatures with the
formula:
Temp = gross sensible or
Δ
gross latent cooling
capacity in Btuh
________________
(cfm) (1.085)
Subtract your sensible Δ temp from
the entering db and latent Δ temp
from the entering wb to determine
the leaving evaporator db & wb
(temperatures without the addition of
fan heat).
51.7 db
51.03 wb
Connect MA and SA' on
psychrometric chart with cooling
curve.
Step 3b:
Determine leaving unit temperature
in standard cooling mode
Repeat Step 3a substituting net
sensible or latent capacity for gross
sensible or latent capacity to find the
leaving unit temperature including
fan heat.
48.9 db 53.6 db
47.0 wb 51 wb
84% RH
49% dp
Step 4:
Determine reheat temperature rise
Using the leaving evaporator temp,
go to Ta bl e 5 9 and find the reheat
temperature rise for that particular
cfm: 17.55°F db
Note: Reheat temperature rise is
based on supply airflow and
leaving evaporator coil
temperature.
Step 5:
Determine leaving unit sensible
temperature with reheat active (SA)
Reheat temperature (obtained in step
3) + (SA' + fan heat) = SA
(SA’ + fan heat) = leaving unit temperature
in standard cooling mode from step 3b.
17.55°F db + 53.6°F = 71.2°F db
SA=71.2°F
Since reheat adds only sensible heat,
the dewpoint temperature will
remain constant so follow the
dewpoint temperature line across the
psychrometric chart to find the new
wb temperature.
51 wb
29.4 dp
20.8 RH
Consider the Psychrometric Chart. If
the space relative humidity is equal
to or above the space relative
humidity setpoint, the
Dehumidification option will:
•Energize compressor or both
compressors (2 stage
compressor units).
•Hot gas reheat valve is energized
and hot gas is diverted to the
reheat coil.
•Dehumidification/reheat is
terminated when space humidity
is reduced to 5% below relative
humidity setpoint.
At MA, air enters the RTU. The RTU
filters, cools, and dehumidifies the
air as it moves through the
evaporator coil. Air leaves the
evaporator coil saturated at the
preset dew point condition (SA') and
is reheated by the hot gas reheat coil
to deliver 71°F (SA) supply air to the
space.
Options (FIOPS) available for
Downflow Air Discharge
units only. Please verify with
ordering system for
availability.
1
7
1
1,2
16
16
1,16
7,16
14RT-PRC024-EN
Model Number Description
Options
7,3
10,14,15
7,11 ,15
17
7
3,14,16
7
9
8
6
7
16
17
4,7
1
5,7
7
*Factory Installed Options
•2" Pleated Filters
•Black Epoxy Pre-Coated Coils
•Dehumidification Option
•Differential Pressure Switches
•High Efficiency Motors
•Hinged Access Doors
•Novar Return Air Sensor
•Novar Unit Controls
•Powered or Unpowered
Convenience Outlet
•Stainless Steel Heat Exchanger
with 10-year warranty
•Supply and/or Return Air Smoke
Detector
4,13
•Thermal Expansion Valve
•Through the Base Electrical
Access
•Through the Base Electrical with
Circuit Breaker
14,15
•Through the Base Electrical with
Disconnect Switch
Factory* or Field Installed Options
•Barometric Relief
•Clogged Filter/Fan Failure
Switch
4,7
•Discharge Air Sensing Kit
•Economizer (Downflow)
•Electric Heaters
•Frostat
•LonTalk® Communications
3,4,7
Interface (LCI)
7
•Oversized Motors7
•Reference or Comparative
Enthalpy
•Tool-less Hail Guards
•Trane Communications Interface
(TCI)
2,7
Field Installed Options
•CO
Sensing
2
•Digital Display Zone Sensor
•Dual Thermistor Remote Zone
Sensor
•Economizer (Horizontal)
•High Altitude Kit
•High and Low Static Drive Kits
•Humidity Sensor
•Low Static Drive
•LP Conversion Kit
•Manual Outside Air Damper
•Motorized Outside Air Dampers
•Powered Exhaust
•Quick Start Kit
•ReliaTel Options Module
12
•Remote Potentiometer
•Roof Curb (Downflow Only)
•Thermostat
•Ventilation Override Accessory
4
•Zone Sensors and Remote Zone
Sensors
Model Number Notes
1.Some field set up required.
2. TCI is for use with non-VariTrac
systems and VariTrac systems.
3. All 10th digit model numbers
including reheat coil (M,N,P,R)
require additional factory
installed options;
ReliaTel™options module,
Frostat, and 2" pleated filters.
4. Requires ReliaTel options
module.
5. Requires Economizer.
6. Must be ordered with Throughthe-Base Electrical and either
Unit Mounted Disconnect or
Circuit Breaker.
7.Available factory installed on
downflow AND horizontal units.
Verify with ordering system.
8. The Novar control option
includes the following factory
installed and wired devices:
Novar ETM-2024 or Novar 3051
rooftop controller, fan proving
switch, clogged filter or unit
shutdown switch, Cool 1, Cool 2,
Heat switch and discharge air
sensor (Novar 2024 is downflow
only).
Note: Option cannot be
ordered in conjunction
with FIOPS Smoke
Detector option.
9. This option consists of the Novar
return air sensor (Novar #WTS-
10) that is wired and shipped in
the return air section of the unit.
The sensor ships with
approximately 15' of extra wire
for dropping down the return air
duct (downflow only).
10. Cannot be fused.
11. Must be factory installed when
using Through-the-Base Options.
12. ReliaTel Options Module is
required when ordering the
following accessories: Clogged
Filter Switch, Fan Fail Switch,
Discharge Air Sensing Kit,
Frostat, Ventilation Override,
Smoke Detector and
Dehumidification.
13. Option cannot be ordered in
conjunction with field installed
economizer on downflow units.
Must be factory installed. The
return air smoke detector may
not fit up or work properly on the
Voyager units when used in
conjunction with 3rd party
accessories (such as bolt on heat
wheels, economizers, and power
exhaust). Do not order the return
air smoke detectors when using
this type of accessory.
14. Unit mounted disconnect and
circuit breakers are mutually
exclusive of each other.
15. Through-the-base electrical
option must be ordered with
either unit mounted disconnect
or circuit breaker. When adding
heat, must order Trane Electric
Heat.
16. Available on high efficiency,
downflow units only.
17. All Factory Installed Options are
Built-to-Order. Check order
services for estimated
production cycle.
Note: *Some Factory Installed
Options (FIOPS) available for
Downflow Air Discharge units
only. Please verify with
ordering system for
availability.
Gross Cooling Capacity
EER (Downflow/Horizontal)
Nominal CFM / ARI Rated CFM
ARI Net Cooling Capacity
Integrated Part Load Value
System Power (kW)
Compressor
Number/Type2/Scrolls2/Scrolls2/Scrolls2/Scrolls
Sound
Outdoor Sound Rating (BELS)
Outdoor Coil
Typ e
Tube Size (in.) OD
Face Area (sq. ft.)
Rows/FPI
Indoor Coil
Typ e
Tub e S i z e ( i n .)
Face Area (sq. ft.)
Rows/FPI
Refrigerant Control
Drain Connection Number/Size (in.)
Outdoor Fan
Typ e
Number Used/Diameter (in.)
Drive Type/No. Speeds
CFM
Number Motors/HP
Motor RPM
Indoor Fan
Typ e
Number Used/Diameter (in.)
Drive Type/Number Speeds
Number Motors
Motor HP (Standard/Oversized)
Motor RPM (Standard/Oversized)
Motor Frame Size (Standard/
Oversized)
Filters
Typ e F u r n i s h e d
Number Size Recommended
Downflow
Horizontal
Cooling Performance is rated at 95°F ambient, 80°F entering dry bulb, 67°F entering wet bulb. Gross capacity does not include the effect of fan motor
heat. ARI capacity is net and includes the effect of fan motor heat. Units are suitable for operation to ±20% of nominal cfm. Certified in accordance
with the Unitary Large Equipment Certification Program, which is based on ARI Standard 340/360-93.
(ii)
EER is rated at ARI conditions and in accordance with ARI Standard 210/240 or 360.
(iii)
Integrated Part Load Value is rated in accordance with ARI Standard 210/240 or 360. Units are rated at 80°F ambient, 80°F entering dry bulb, and
67°F entering wet bulb at ARI rated cfm.
(iv)
Outdoor Sound Rating shown is tested in accordance with ARI Standard 270 or 370.
(v)
For 380V/60Hz units, the oversized motor (Indoor Fan) is used as the standard motor. Refer to oversized motor data.
(vi)
An optional 2 inch pleated filter is also available.
(vii)
Refrigerant charge is an approximate value. For a more precise value, see unit nameplate and service instructions.
(viii)
Heating Performance limit settings and rating data were established and approved under laboratory test conditions using American National Standards
Institute standards. Ratings shown are for elevations up to 2000 feet. For elevations above 2000 feet, ratings should be reduced at th e rat e of 4% for
each 1000 feet above sea level.
(ix)
AFUE is rated in accordance with DOE test procedures.
Gross Cooling Capacity
EER (Downflow/Horizontal)
Nominal CFM / ARI Rated CFM
ARI Net Cooling Capacity
Integrated Part Load Value
System Power (kW)
Compressor
Number/Type2/Scrolls2/Scrolls2/Scrolls2/Scrolls
Sound
Outdoor Sound Rating (BELS)
Outdoor Coil
Typ e
Tube Size (in.) OD
Face Area (sq. ft.)
Rows/FPI
Indoor Coil
Typ e
Tub e S i z e ( i n .)
Face Area (sq. ft.)
Rows/FPI
Refrigerant Control
Drain Connection Number/Size (in.)
Outdoor Fan
Typ e
Number Used/Diameter (in.)
Drive Type/No. Speeds
CFM
Number Motors/HP
Motor RPM
Indoor Fan
Typ e
Number Used/Diameter (in.)
Drive Type/Number Speeds
Number Motors
Motor HP (Standard/Oversized)
Motor RPM (Standard/Oversized)
Motor Frame Size (Standard/
Oversized)
Filters
Typ e F u r n i s h e d
Number Size Recommended
Downflow
Horizontal
Cooling Performance is rated at 95°F ambient, 80°F entering dry bulb, 67°F entering wet bulb. Gross capacity does not include the effect of fan motor
heat. ARI capacity is net and includes the effect of fan motor heat. Units are suitable for operation to ±20% of nominal cfm. Certified in accordance with
the Unitary Large Equipment Certification Program, which is based on ARI Standard 340/360-93.
(ii)
EER is rated at ARI conditions and in accordance with ARI Standard 210/240 or 360.
(iii)
Integrated Part Load Value is rated in accordance with ARI Standard 210/240 or 360. Units are rated at 80°F ambient, 80°F entering dry bulb, and 67°F
entering wet bulb at ARI rated cfm.
(iv)
Outdoor Sound Rating shown is tested in accordance with ARI Standard 270 or 370.
(v)
For 380V/60Hz units, the oversized motor (Indoor Fan) is used as the standard motor. Refer to oversized motor data.
(vi)
An optional 2 inch pleated filter is also available.
(vii)
Refrigerant charge is an approximate value. For a more precise value, see unit nameplate and service instructions.
(viii)
Heating Performance limit settings and rating data were established and approved under laboratory test conditions using American National Standards
Institute standards. Ratings shown are for elevations up to 2000 feet. For elevations above 2000 feet, ratings should be reduced at the rate of 4% for
each 1000 feet above sea level.
(ix)
AFUE is rated in accordance with DOE test procedures.
*Indicates both downflow/horizontal units.
(viii)
RT-PRC024-EN19
General Data
Table 3. General Data — 25 Tons
25 Tons Downflow & Horizontal Units
T/YC*300B3,4,W(L,H
(vii)
(viii)
(ii)
(iii)
(iv)
(v)
(vi)
290,000
9.7
10,000/8,750
272,000
9.8
28.05
9.4
Hi-Performance
0.375
36.43
2/16
Hi-Performance
0.375
26.00
3/15
Short Orifice
1/1.00 NPT
Propeller
2/28
Direct/1
16,700
2/1.0
1,125
FC Centrifugal
1/18x18
Belt/1
1
7.5/N/A
3,470/N/A
184T/N/A
Throwaway
(4)20x20x2,(4)20x25x2
(8)20x25x2
Cooling Performance
Gross Cooling Capacity
EER (Downflow/Horizontal)
Nominal CFM / ARI Rated CFM
ARI Net Cooling Capacity
Integrated Part Load Value
System Power (kW)
Compressor
Number/Type2/Scrolls
Sound
Outdoor Sound Rating (BELS)
Outdoor Coil
Typ e
Tube Size (in.) OD
Face Area (sq. ft.)
Rows/FPI
Indoor Coil
Typ e
Tub e S i z e ( i n .)
Face Area (sq. ft.)
Rows/FPI
Refrigerant Control
Drain Connection Number/Size (in.)
Outdoor Fan
Typ e
Number Used/Diameter (in.)
Drive Type/No. Speeds
CFM
Number Motors/HP
Motor RPM
Indoor Fan
Typ e
Number Used/Diameter (in.)
Drive Type/Number Speeds
Number Motors
Motor HP (Standard/Oversized)
Motor RPM (Standard/Oversized)
Motor Frame Size (Standard/Oversized)
Filters
Typ e F u r n i s h e d
Number Size Recommended
Downflow
Horizontal
Refrigerant Charge
Pounds of R-22
Downflow
Horizontal17.0/Circuit
(25 Tons Standard Efficiency)
(i)
),K
20RT-PRC024-EN
General Data
Table 3. (continued) General Data — 25 Tons
25 Tons Downflow & Horizontal Units
Heating Performance
(Gas/Electric Only)
Heating ModelsLowHigh
Heating Input (Btuh)250,000400,000
1st Stage (Btu)175,000300,000
Heating Output (Btuh)203,000324,000
1st Stage (Btu)142,000243,000
AFUE (%)
(x)
Downflow/Horizontal80.2/81.079.8/79.7
Steady State Efficiency%81.4/81.080.8/81.0
No. Burners1
No. Stages2
Gas Supply Line Pressure (in w.c.)
Natural or LP (minimum/maximum)2.5/14.0
Gas Connection Pipe Size (in.)1/23/4
(i)
Applies to Y* models only.
(ii)
Cooling Performance is rated at 95°F ambient, 80°F entering dry bulb, 67°F entering wet bulb.
Gross capacity does not include the effect of fan motor heat. ARI capacity is net and includes the
effect of fan motor heat. Units are suitable for operation to ±20% of nominal cfm. Certified in accordance with the Unitary Large Equipment Certification Program, which is based on ARI Standard
340/360-93.
(iii)
EER is rated at ARI conditions and in accordance with ARI Standard 210/240 or 360.
(iv)
Integrated Part Load Value is rated in accordance with ARI Standard 210/240 or 360. Units are
rated at 80°F ambient, 80°F entering dry bulb, and 67°F entering wet bulb at ARI rated cfm.
(v)
Outdoor Sound Rating shown is tested in accordance with ARI Standard 270 or 370.
(vi)
For 380V/60Hz units, the oversized motor (Indoor Fan) is used as the standard motor. Refer to
oversized motor data.
(vii)
An optional 2 inch pleated filter is also available.
(viii)
Refrigerant charge is an approximate value. For a more precise value, see unit nameplate and service instructions.
(ix)
Heating Performance limit settings and rating data were established and approved under laboratory test conditions using American National Standards Institute standards. Ratings shown are for
elevations up to 2000 feet. For elevations above 2000 feet, ratings should be reduced at the rate
of 4% for each 1000 feet above sea level.
(x)
AFUE is rated in accordance with DOE test procedures.
EER
Nominal CFM / ARI Rated CFM
ARI Net Cooling Capacity
Integrated Part Load Value
System Power (kW)
Compressor
Number/Type2/Scrolls2/Scrolls
Sound
Outdoor Sound Rating (BELS)
Outdoor Coil
Typ e
Tube Size (in.) OD
Face Area (sq. ft.)
Rows/FPI
Indoor Coil
Typ e
Tub e S i z e ( i n .)
Face Area (sq. ft.)
Rows/FPI
Refrigerant Control
Drain Connection Number/Size (in.)
Outdoor Fan
Typ e
Number Used/Diameter (in.)
Drive Type/No. Speeds
CFM
Number Motors/HP
Motor RPM
Indoor Fan
Typ e
Number Used/Diameter (in.)
Drive Type/Number Speeds
Number Motors
Motor HP (Standard/Oversized)
Motor RPM (Standard/Oversized)
Motor Frame Size (Standard/Oversized)
Filters
Typ e F u r n i s h e d
Number Size Recommended
Downflow
Horizontal
Optional Hot Gas Reheat Coil
Typ e
Tube Size (in.) OD
Face Area (sq. ft)
Rows/FPI
Cooling Performance is rated at 95°F ambient, 80°F entering dry bulb, 67°F entering wet bulb. Gross capacity does not include the effect of fan
motor heat. ARI capacity is net and includes the effect of fan motor heat. Units are suitable for operation to ±20% of nominal cfm. Certified in
accordance with the Unitary Large Equipment Certification Program, which is based on ARI Standard 340/360-93.
(iv)
EER is rated at ARI conditions and in accordance with ARI Standard 210/240 or 360.
(v)
Integrated Part Load Value is rated in accordance with ARI Standard 210/240 or 360. Units are rated at 80°F ambient, 80°F entering dry bulb, and
67°F entering wet bulb at ARI rated cfm.
(vi)
Outdoor Sound Rating shown is tested in accordance with ARI Standard 270 or 370.
(vii)
For 380V/60Hz units, the oversized motor (Indoor Fan) is used as the standard motor. Refer to oversized motor data.
(viii)
An optional 2 inch pleated filter is also available.
(ix)
Refrigerant charge is an approximate value. For a more precise value, see unit nameplate and service instructions.
(x)
Heating Performance limit settings and rating data were established and approved under laboratory test conditions using American National Standards Institute standards. Ratings shown are for elevations up to 2000 feet. For elevations above 2000 feet, ratings should be reduced at the rate
of 4% for each 1000 feet above sea level.
(xi)
AFUE is rated in accordance with DOE test procedures.
(x)
RT-PRC024-EN23
General Data
(17½, 20, 25 Tons High Efficiency)
Table 5. General Data — 17½, 20, 25 Tons
17½ Tons Downflow &
Horizontal Units
T/YC*211C3,4,WT/YC*241C3,4,W
(vii)
(ii)
(iv)
(v)
(viii)
220,000
11.0
7,000/6,200
208,000
12.0
18.91
9.49.49.4
Hi-Performance
0.375
35.30
3/16
Hi-Performance
0.375
26.00
4/15
Short Orifice
1/1.0 NPT
Propeller
2/26
Direct/1
12,800
2/1.0
1,125
FC Centrifugal
1/18x18
Belt/1
1
5.0/7.5
3,450/3,470
145T/184T
Throwaway
(4)20x20x2,(4)20x25x2
(8)20x25x2
—
—
—
—
25.7/12.5
—
Cooling Performance
Gross Cooling Capacity
(iii)
EER
Nominal CFM / ARI Rated CFM
ARI Net Cooling Capacity
Integrated Part Load Value
System Power (kW)
Compressor
Number/Type2/Scrolls2/Scrolls2/Scrolls
Sound
Outdoor Sound Rating (BELS)
Outdoor Coil
Typ e
Tube Size (in.) OD
Face Area (sq. ft.)
Rows/FPI
Indoor Coil
Typ e
Tub e S i z e ( i n .)
Face Area (sq. ft.)
Rows/FPI
Refrigerant Control
Drain Connection Number/Size (in.)
Outdoor Fan
Typ e
Number Used/Diameter (in.)
Drive Type/No. Speeds
CFM
Number Motors/HP
Motor RPM
Indoor Fan
Typ e
Number Used/Diameter (in.)
Drive Type/Number Speeds
Number Motors
Motor HP (Standard/Oversized)
Motor RPM (Standard/Oversized)
Motor Frame Size (Standard/Oversized)
Filters
Typ e F u r n i s h e d
Number Size Recommended
Downflow
Horizontal
Optional Hot Gas Reheat Coil
Typ e
Tube Size (in.) OD
Face Area (sq. ft)
Rows/FPI
Refrigerant Charge Pounds of R-22
Standard
Optional Hot Gas Reheat Coil
20 Tons Downflow &
Horizontal Units
(i)
268,000
10.6
8,000/7,000
250,000
11.2
23.58
Hi-Performance
0.375
35.30
3/16
Hi-Performance
0.375
26.00
(vi)
/15
4
Short Orifice
1/1.0 NPT
Propeller
2/26
Direct/1
13,700
2/1.0
1,125
FC Centrifugal
1/18x18
Belt/1
1
5.0/7.5
3,450/3,470
145T/184T
Throwaway
(4)20x20x2,(4)20x25x2
(8)20x25x2
Hi-Performance
0.375
26
1/16
21.8/21.8
21.3/21.0
25 Tons Downflow &
Horizontal Units
T/YC*301C3,4,W
300,000
10.4
10,000/8,750
278,000
11.0
26.73
Hi-Performance
0.375
35.30
3/16
Hi-Performance
0.375
26.00
4/15
Short Orifice
1/1.0 NPT
Propeller
2/26
Direct/1
13,700
2/1.0
1,125
FC Centrifugal
1/18x18
Belt/1
1
7.5
3,470
184T
Throwaway
(4)20x20x2,(4)20x25x2
(8)20x25x2
—
—
—
—
24.5/24.5
—
24RT-PRC024-EN
General Data
(17½, 20, 25 Tons High Efficiency)
Table 5. (continued) General Data — 17½, 20, 25 Tons
Cooling Performance is rated at 95°F ambient, 80°F entering dry bulb, 67°F entering wet bulb. Gross capacity does not include the effect of fan motor
heat. ARI capacity is net and includes the effect of fan motor heat. Units are suitable for operation to ±20% of nominal cfm. Certified in accordance
with the Unitary Large Equipment Certification Program, which is based on ARI Standard 340/360-93.
(iii)
EER is rated at ARI conditions and in accordance with ARI Standard 210/240 or 360.
(iv)
Integrated Part Load Value is rated in accordance with ARI Standard 210/240 or 360. Units are rated at 80°F ambient, 80°F entering dry bulb, and
67°F entering wet bulb at ARI rated cfm.
(v)
Outdoor Sound Rating shown is tested in accordance with ARI Standard 270 or 370.
(vi)
On Hot Gas Reheat units, Indoor Coil = 3 rows.
(vii)
An optional 2 inch pleated filter is also available.
(viii)
Refrigerant charge is an approximate value. For a more precise value, see unit nameplate and service instructions.
(ix)
Heating Performance limit settings and rating data were established and approved under laboratory test conditions using American National Standards
Institute standards. Ratings shown are for elevations up to 2000 feet. For elevations above 2000 feet, ratings should be reduced at the rate of 4% for
each 1000 feet above sea level.
(x)
AFUE is rated in accordance with DOE test procedures.
*Indicates both downflow/horizontal units.
20 Tons Downflow &
Horizontal Units
25 Tons Downflow &
Horizontal Units
RT-PRC024-EN25
Performance Data
Table 6. Gross Cooling Capacities 12½ Tons Three Phase Standard Efficiency T/YC*150D3,4,W,K
1. All capacities shown are gross and have not considered indoor fan heat. To obtain NET cooling capacity subtract indoor fan heat. For indoor fan heat formula,
refer to appropriate airflow table notes.
2. MBH = Total Gross Capacity
3. SHC = Sensible Heat Capacity
*Indicates both downflow and horizontal units.
Table 7. Gross Cooling Capacities 15 Tons Three Phase Standard Efficiency T/YC*180B3,4,W,K
1. All capacities shown are gross and have not considered indoor fan heat. To obtain NET cooling capacity subtract indoor fan heat. For indoor fan heat formula,
refer to appropriate airflow table notes.
2. MBH = Total Gross Capacity
3. SHC = Sensible Heat Capacity
*Indicates both downflow and horizontal units.
26RT-PRC024-EN
Performance Data
(17½, 20 Tons Standard Efficiency)
Table 8. Gross Cooling Capacities 17½ Tons Three Phase Standard Efficiency T/YC*210C3,4,W,K
1. All capacities shown are gross and have not considered indoor fan heat. To obtain NET cooling capacity subtract indoor fan heat. For indoor fan heat formula,
refer to appropriate airflow table notes.
2. MBH = Total Gross Capacity
3. SHC = Sensible Heat Capacity
*Indicates both downflow and horizontal units.
Table 9. Gross Cooling Capacities 20 Tons Three Phase Standard Efficiency T/YC*240B3,4,W,K
1. All capacities shown are gross and have not considered indoor fan heat. To obtain NET cooling capacity subtract indoor fan heat. For indoor fan heat formula,
refer to appropriate airflow table notes.
2. MBH = Total Gross Capacity
3. SHC = Sensible Heat Capacity
*Indicates both downflow and horizontal units.
RT-PRC024-EN27
Performance Data
(25 Tons Standard Efficiency)
Table 10. Gross Cooling Capacities 25 Tons Three Phase Standard Efficiency T/YC*300B3,4,W,K
1. All capacities shown are gross and have not considered indoor fan heat. To obtain NET cooling capacity subtract indoor fan heat. For indoor fan heat formula,
refer to appropriate airflow table notes.
2. MBH = Total Gross Capacity
3. SHC = Sensible Heat Capacity
*Indicates both downflow and horizontal units.
28RT-PRC024-EN
Performance Data
(12½ Tons High Efficiency)
Table 11. Gross Cooling Capacities 12½ Tons Three Phase Standard Refrigeration System High Efficiency T/YC*151C3,4,W
1. All capacities shown are gross and have not considered indoor fan heat. To obtain NET cooling capacity subtract indoor fan heat. For indoor fan heat formula,
refer to appropriate airflow table notes.
2. MBH = Total Gross Capacity
3. SHC = Sensible Heat Capacity
*Indicates both downflow and horizontal units.
RT-PRC024-EN29
Performance Data
(12½ Tons High Efficiency)
Table 12. Gross Cooling Capacities 12½ Tons Three Phase Dehumidification (Hot Gas Reheat) or TXV Option High Efficiency T/Y*D151C3,4,W
1. All capacities shown are gross and have not considered indoor fan heat. To obtain NET cooling capacity subtract indoor fan heat. For indoor fan heat formula,
refer to appropriate airflow table notes.
2. MBH = Total Gross Capacity
3. SHC = Sensible Heat Capacity
*For 2500 and 3250 CFM - Unit applications below 320 CFM/Ton are only applicable to TCD models only (No Gas Heat). See below for restrictions:
• Electric heaters restricted on applications below 320 CFM/Ton.
• Dehumidification (Hot Gas Reheat) or TXV with Frostat and Crankcase Heaters are required on applications below 320 CFM/Ton.
30RT-PRC024-EN
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