Trane Voyager RT-DS-10 User manual

RT-DS-10
April 1999
Packaged
Rooftop
Air Conditioners
23 to 42 Ton (81-148 kW)
Voyager
Commercial  50 HZ

2
©American Standard Inc. 1999
Features
and
Benefits
Over the years the Voyagerproduct
line has developed into the most
complete line of commercial packaged
units available. We were first with the
Micro when we developed micro-
electronic unit controls and we move
ahead again with Voyager Commercial
products.
Five new sizes from 23-42 tons (81-148
kW) meet the needs of the changing
commercial rooftop marketplace.
Our customers demand units that will
have exceptional reliability, meet
stringent performance requirements,
and be competitively priced. These
same requirements drove the design of
the original light commercial Voyager
and have been carried forward into
Voyager Commercial.
Voyager Commercials features and
benefits are comprised of cutting edge
technologies like the reliable 3-D
Scroll compressor, Trane engineered
microprocessor controls, computer-
aided run testing, and Integrated
Comfortsystems. So, whether youre
the contractor, the engineer, or the
owner you can be certain that when
youve chosen Voyager Commercial,
youve chosenSimply the best value!

3
ContentsContents
Optional Features
Electric heat
Natural gas heat
LP gas heat (kit only)
Power exhaust
Barometric relief
High efficiency 2 (51 mm) throwaway
filters
High efficiency 4 (102 mm) throwaway
filters
High efficiency supply fan motors
Manual fresh air damper
Economizer with dry bulb control
Economizer with reference enthalpy
control
Economizer with differential
(comparative) enthalpy control
Inlet guide vanes on VAV units
Service valves
Through-the-base electrical provision
Factory mounted disconnect with
external handle (non-fused)
Integrated Comfortsystem control
option
Ventilation override
Hinged service access
Factory installed condenser
coil guards
Standard Features
Factory installed and commissioned
microelectronic controls
Trane 3-DScroll compressors
Dedicated downflow or horizontal
configuration
CV or VAV control
FROSTATcoil frost protection on all
units
Supply air overpressurization
protection on VAV units
Supply airflow proving
Emergency stop input
Compressor lead-lag
Occupied-unoccupied switching
Timed override activation
FC supply fans
Two-inch (51 mm) standard efficiency
filters
Finish exceeds salt spray requirements
of ASTM B117
Features and Benefits 2
Model Number Description 9
General Data 10
Application Considerations 13
Selection Procedure 15
Performance Adjustment Factors 17
Performance Data 18
Electrical Data 30
Controls 32
Dimensional Data 35
Weights 38
Field Installed Sensors 39
Mechanical Specifications 42

4
One of two matched scroll plates  the
distinguishing feature of the scroll
compressor.
Chart illustrates low torque variation of
3-D Scroll compressors reciprocating
compressor.
Trane 3-D®Scroll Compressor
Simple Design with 70% Fewer Parts
Fewer parts than an equal capacity
reciprocating compressor means
significant reliability and efficiency
benefits. The single orbiting scroll
eliminates the need for pistons,
connecting rods, wrist pins and valves.
Fewer parts lead to increased reliability.
Fewer moving parts, less rotating mass
and less internal friction means greater
efficiency than reciprocating
compressors.
Patented 3-D Scroll Compliance
Trane 3-D Scroll compliance provides
important reliability and efficiency
benefits. 3-D compliance allows the
orbiting scrolls to touch in all three
dimensions, forming a completely
enclosed compression chamber which
leads to increased efficiency. In
addition, 3-D compliance means the
orbiting scrolls only touch with enough
force to create a seal so there is no
wear between the scroll plates. The
fixed and orbiting scrolls are made of
high strength cast iron which results in
less thermal distortion, less leakage,
and higher efficiencies. The most
outstanding feature of the scroll
compressor 3-D compliance is that the
slugging will not cause failure. In a
reciprocating compressor, however, the
liquid or dirt can cause serious
damage.
Low Torque Variation
The 3-D Scroll compressor has a very
smooth compression cycle with torque
variations that are only 30 percent of
that produced by a reciprocating
compressor. This means the scroll
compressor imposes very little stress
on the motor for greater reliability. Low
torque variation means reduced noise
and vibration.
Suction Gas Cooled Motor
Compressor motor efficiency and
reliability is further optimized with this
design. Cool suction gas keeps the
motor cooler for longer life and better
efficiency.
Proven Design Through Testing and
Research
With over twenty years of development
and testing, Trane 3-D Scroll
compressors have undergone more
than 400,000 hours of laboratory
testing and field operation. This work
combined with over 25 patents makes
Trane the worldwide leader in air
conditioning scroll compressor
technology.
Features
and
Benefits

5
Features
and
Benefits
Micro Controls
For over 10 years Trane has been
working with microprocessor controls
in the applied equipment markets.
These designs have provided the
technology that has been applied to the
Voyager units.

The Micro provides unit control for
heating, cooling and ventilating
utilizing input from sensors that
measure outdoor and indoor
temperature.

The Micro improves quality and
reliability through the use of time-
tested microprocessor controls and
logic. The Micro:
 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 commercial compressor.

The Voyager with the Micro reduces
the number of components required to
operate the unit, thereby reducing
possibilities for component failure.
Quality and Reliability
Drum and Tube Heat Exchanger

The drum and tube heat exchanger is
designed for increased efficiency and
reliability and has utilized improved
technology incorporated in the large
roof top commercial units for almost
20 years.
The heat exchanger 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 21/2times 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.
*Apply to 60 HZ testing standards only.

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
premixed 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.
Forced Combustion Blower
Negative Pressure Gas Valve
Hot Surface Ignitor
Drum and Tube Heat Exchanger

6
Features
and
Benefits
Excellent Part-Load Efficiency

The Scroll compressors unique design
allows it to be applied in a passive
parallel manifolded piping scheme,
something that a recip just doesnt
do very well.
When the unit begins stage back at part
load it still has the full area and circuitry
of its evaporator and condenser coils
available to transfer heat. In simple
terms this means superior part-load
efficiencies (IPLV) and lower unit
operating costs.
FC Fans with Inlet Guide Vanes

Tranes forward-curved fans with inlet
guide vanes pre-rotate the air in the
direction of the fan wheel, decreasing
static pressure and horsepower,
essentially unloading the fan wheel.
The unloading characteristics of a
Trane FC fan with inlet guide vanes
result in superior part load
performance.
Rigorous Testing

All of Voyagers designs were
rigorously rain tested at the factory to
ensure water integrity.

Actual shipping tests are performed to
determine packaging requirements.
Units are test shipped around the
country. Factory shake and drop tested
as part of the package design process
to help assure that the unit will arrive at
your 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.
Ease of Installation
Contractors look for lower installation
(jobsite) costs. Voyagers
conversionless units provide many
time and money saving features.
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.
Improved Airflow

U-shaped airflow allows for improved
static capabilities. The need for high
static motor conversion is minimized
and time isnt spent changing to high
static oversized motors.
Single Point Power
A single electrical connection powers
the unit.
Micro

The function of the Micro replaces the
need for field installed anti-short-cycle
timer and time delay relays. The Micro
ensures that these controls are integral
to the unit. The contractor no longer
has to purchase these controls as
options and pay to install them.

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 it easier
for the installer to wire.

7
Features
and
Benefits
Serviceability
Todays owners are more conscious of
the cost of service and maintenance.
Voyager was designed with input from
service contractors. Their information
helped us design a unit that would get
the serviceman off the job quicker and
save the owner money. Here is why
Voyager can save money in service.
Voyagers Simpler Design
The Voyager design uses fewer parts
than previous units. Since it is simpler
in design, it is easier to diagnose.
Micro

The Micro 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, the Micro is
operational. The light indicates that the
Micro is functioning properly.

The Micro features expanded
diagnostic capabilities when utilized
with Tranes 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).
Easy Access Low Voltage
Terminal Board
Voyagers Low Voltage Terminal Board
is external to the electrical control
cabinet. It is extremely easy to locate
and attach the thermostat wire. This is
another cost and timesaving
installation feature.
Value
Low Ambient Cooling
All Voyager Commercial units have
cooling capabilities down to 0°F
(-17.8°C) as standard.
Power Exhaust Option
Provides exhaust of the return air when
using an economizer to maintain
proper building pressurization. Great
for relieving most building
overpressurization problems.
Micro Benefits

The Micro in the Voyager units has
built-in anti-short-cycle timer, time
delay relay and minimum on time
controls. These controls are functions
of the Micro and are factory tested to
assure proper operation.

The Micro softens electrical spikes by
staging on fans, compressors and
heaters.

The Intelligent Fallback or Adaptive
Control 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
feature of the Micro. It functions
constantly as the Micro and zone
sensor work together in harmony to
provide tighter comfort control than
conventional electromechanical
thermostats.

8
VariTrac
Tranes changeover VAV System for
light commercial applications is also
available. Coupled with Voyager
Commercial, it provides the latest in
technological advances for comfort
management systems and can allow
thermostat control in every zone served
by VariTrac.
Downflow and Horizontal Economizers
The economizers come with three
options of controls (dry bulb, enthalpy
and differential enthalpy).
Trane Communication Interface or TCI
is available factory or field installed.
This module when applied with the
Micro easily interfaces with Tranes
Integrated Comfortsystem.
Trane factory built roof curbs are
available for all units.
One of Our Finest Assets:
Trane Commercial Sales Engineers are
a Support group that can assist you
with:
 Product
 Application
 Service
 Training
 Special Applications
 Specifications
 Computer Programs and more
Features
and
Benefits
VariTrac
CCP

9
Model
Number
Description
TC D 400 A C 0 A 1 A 4 F D 1 A
1,2 3 4,5,6 7 8  9 10 11 12  13 14 15 16 17
Note:
1. All voltages are across-the-line starting only.
2. Option includes Liquid, Discharge, Suction Valves.
3. Supply air fan drives A thru G are used with 22.9-29.2 ton (82-105 kW) units only and
drives H thru N are used with 33.3 and 41.7 ton (120-148 kW) units only.
4. Electric Heat kW ratings are based upon voltage ratings of 380/415 V. Heaters A, B, C, D
are used with 22.9-29.2 ton (82-105 kW) units only and heaters B, C, D, E are used with
33.3-41.7 ton (120-148 kW) units only.
Digits 1, 2  Unit Function
TC = DX Cooling, No Heat
TE = DX Cooling, Electric Heat
YC = DX Cooling, Natural Gas Heat
Digit 3  Unit Airflow Design
D = Downflow Configuration
H = Horizontal Configuration
Digits 4, 5, 6  Nominal Cooling Capacity
275 = 22.9 Tons (82 kW)
305 = 25.4 Tons (89 kW)
350 = 29.2 Tons (105 kW)
400 = 33.3 Tons (120 kW)
500 = 41.7 Tons (148 kW)
Digit 7  Major Development Sequence
A = First
B = Second, Etc.
Digit 8  Power Supply (See Note 1)
C = 380/50/3
D = 415/50/3
Digit 9  Heating Capacity (See Note 4)
0 = No Heat (TC only)
L = Low Heat (YC only)
H = High Heat (YC only)
Note: When second digit is E for Electric
Heat, the following values apply in the
ninth digit.
380V / 415V
A = 23 27 kW
B = 34 40 kW
C = 45 54 kW
D = 56 67 kW
E = 68 81 kW
Digit 10  Design Sequence
A = First
Digit 11  Exhaust
0 = None
1 = Barometric Relief
(Available w/Economizer only)
2 = Power Exhaust Fan
(Available w/Economizer only)
Digit 12  Filter
A = Standard 2 (51 mm) Throwaway Filters
B = High Efficiency 2 (51 mm) Throwaway
Filters
C = High Efficiency 4 (102 mm) Throwaway
Filters
Digit 13  Supply Fan Motor, HP
1 = 7.5 Hp Std. Eff. (5.6 kW)
2 = 10 Hp Std. Eff. (7.5 kW)
3 = 15 Hp Std. Eff. (11.2 kW)
4 = 20 Hp Std. Eff. (14.9 kW)
Digit 14  Supply Air Fan Drive Selections
(See Note 3)
A = 458 H = 417
B = 500 J = 437
C = 541 K = 479
D = 583 L = 521
E = 625 M = 562
F = 658 N = 604
G = 664
Digit 15  Fresh Air Selection
A = No Fresh Air
B = 0-25% Manual Damper
C = 0-100% Economizer, Dry Bulb Control
D = 0-100% Economizer, Reference
Enthalpy Control
E = 0-100% Economizer, Differential
Enthalpy Control
F = C Option and Low Leak Fresh
Air Damper
G = D Option and Low Leak Fresh
Air Damper
H = E Option and Low Leak Fresh
Air Damper
Digit 16  System Control
1 = Constant Volume
2 = VAV Supply Air Temperature Control
w/o Inlet Guide Vanes
3 = VAV Supply Air Temperature Control
w/Inlet Guide Vanes
Note: Zone sensors are not included with
option and must be ordered as a separate
accessory.
Digit 17+  Miscellaneous
A = Service Valves (See Note 2)
B = Through the Base Electrical Provision
C = Non-Fused Disconnect Switch with
External Handle
D = Factory-Powered 15A GFI
Convenience Outlet and Non-Fused
Disconnect Switch with
External Handle
E = Field-Powered 15A GFI
Convenience Outlet
F = ICS Control Option  Trane
Communication Interface, Supply Air
Sensing and Clogged Filter Switch
G = Ventilation Override
H = Hinged Service Access
J = Condenser Coil Guards

10
Table 10-1  General Data  23-25 Tons
TC*275 (23 Tons) TC*305 (25 Tons)
Cooling Performance1
Nominal Gross Capacity(Btuh) 279,000 (81.8 kW) 304,000 (89.1 kW)
System Power kW 26.1 30.2 kW
Compressor
Number/Type 2/Scroll 2/Scroll
Nominal Motor HP (ea) 8.4/12.5 11.7
Motor RPM 2875 2875
Natural Gas Heat2Low High Low High
Heating Input(Btuh) 290,000 (85.0 kW) 500,000 (147 kW) 290,000 (85.0 kW) 500,000 (147 kW)
First Stage 250,000 (73.3 kW) 425,000 (125 kW) 250,000 (73.3 kW) 425,000 (125 kW)
Heating Output(Btuh) 243,000 (69.0 kW) 405,000 (119 kW) 243,000 (69.0 kW) 405,000 (119 kW)
First Stage 202,500 (59.4 kW) 344,250 (101 kW) 202,500 (59.4 kW) 344,250 (101 kW)
Steady State Efficiency(%) 381 81
No. Burners/No. Stages 1/2 1/2
Gas Connect Pipe Size (in) 0.75 (19 mm) 0.75 (19 mm)
Outdoor Coil - Type LANCED LANCED
Tube Size OD (in) 0.375 (10 mm) 0.375 (10 mm)
Face Area (sq ft) 51.3 (4.8 sq m) 51.3 (4.8 sq m)
Rows/Fins Per Inch (25mm) 2/16 2/16
Indoor Coil - Type HI-PERFORM HI-PERFORM
Tube Size OD (in) 0.500 (13 mm) 0.500(13 mm)
Face Area (sq ft) 31.7 (2.9 sq m) 31.7 (2.9 sq m)
Rows/Fins Per Inch (25mm) 2/14 2/14
Refrigerant Control TXV TXV
PVC Drain Connect No./Size (in) 1/1.25 (1/32 mm) 1/1.25 (1/32 mm)
Outdoor Fan Type PROP FAN PROP FAN
No. Used 3 3
Diameter (in.) 28.0 (711 mm) 28.0 (711 mm)
Drive Type/No. Speeds DIRECT/1 DIRECT/1
Cfm 20,450 (9650 L/s) 20,450 (9650 L/s)
No. Motors (RPM) 3 (940) 3 (940)
Motor HP 0.75 (0.56 kW) 0.75 (0.56 kW)
Indoor Fan Type/No. Used FC/1 FC/1
Diameter (in) 22.4 (568 mm) 22.4 (568 mm)
Width (in) 22.0 (559 mm) 22.0 (559 mm)
Drive Type BELT BELT
No. Speeds/No. Motors 1/1 1/1
Motor HP 7.5 (5.6 kW) 7.5 (5.6 kW)
Motor RPM/Frame Size 1460/213T 1460/213T
Filters - Type THROWAWAY THROWAWAY
Furnished/No. Yes/16 Yes/16
Recommended Size (in) 16X 20 X2 (406X 508 X51mm) 16x20x2 (406X 508x51mm)
Refrigerant Type R-22 R-22
Factory Charge (lbs) 446 (21 kg) 46 (21 kg)
Notes:
1. Cooling Performance is rated at 95°F (35°C) ambient, 80°F (27°C) entering dry bulb, 67°F (19°C) entering wet bulb. Gross capacity does not include the effect of
fan motor heat.
2. Heating Performance Limit settings and ratings data were established and approved under laboratory test conditions using American National Standards.
3. Steady State Efficiency is rated in accordance with DOE test procedures.
4. Refrigerant charge is an approximate value. For a more precise value, see unit nameplate and service instructions.
General
Data