Trane Voyager RT-SVX17C-EN Owner's manual

1
Models
"P" and later Design Sequence
TC*, TE*, YC*330A, 360A, 420A, 480A, 600A (60 Hz/3 phase)
TC*, TE*, YC*275A, 305A, 350A, 400A, 500A (50 Hz/3 phase)
60 Hz units with standard options
are certified by Underwriters Labo-
ratory and the Canadian Standards
Association.
© 2005 American Standard All rights reserved
www.trane.com
Important! This document is
customer property and must be
retained by the unit's
maintenance personnel.
VoyagerTM
Commercial 27½ to 50 Ton 60 Hz
Commercial 23 to 42 Ton 50 Hz
CV or VAV Rooftop Air Conditioners
with ReliaTel™ Controls
Installation RT-SVX17C-EN
Operation
Maintenance
Library Service Literature
Product Section Unitary
Product Rooftop Air Conditioning (27½ - 50 Tons)
Model TE*, TC*, & YC*
Literature Type Installation/Operation/Maintenance
Sequence 17C
Date March 2006
File No. SV-UN-RT-SVX17C-EN 0306
Supersedes RT-SVX17C-EN 05/05
Trane has a policy of continuous product and product data improvement and
reserves the right to change design and specifications without notice.
Note: The installation of this equipment must
comply with all National, State, and Local Codes.
®

2
Table of Contents
About This Manual
Literature Change History ............................................... 6
Manual Overview ............................................................. 6
Warnings and Cautions .................................................. 6
Commonly Used Acronyms ............................................ 6
About the Unit .................................................................. 7
Unit Inspection ................................................................. 7
Storage ............................................................................ 7
Installation
General Unit Requirements ........................................... 12
Downflow Models Only: .............................................. 12
All Units: ..................................................................... 12
Electrical Requirements ............................................. 12
Field Installed Control Wiring ..................................... 12
Gas Heat Requirements ............................................. 12
Recommended Clearances ........................................... 13
Roof Curb and Ductwork ............................................... 13
Horizontal Ductwork ....................................................... 13
Unit Rigging and Placement .......................................... 13
Condensate Drain Connection....................................... 16
O/A Sensor & Tubing Installation ................................... 16
Field Installed Gas Piping
General Requirements ................................................... 17
Connecting the Gas Supply Line to the
Furnace Gas Train ......................................................... 17
Field Installed Electrical Wiring
Disconnect Switch External Handle
(Factory Mounted Option) .............................................. 19
Main Power Wiring ......................................................... 19
Low Voltage Wiring ........................................................ 23
Field Installed AC Control Wiring ................................... 23
Field Installed DC Control Wiring ................................. 23
Zone Sensor Wiring Requirements .............................. 24
Conventional Thermostat Wiring Requirements .......... 24
Emergency Stop Wiring ................................................ 24
Zone Sensor Thermostat Connections ......................... 25
Remote Panels and Sensors
Constant Volume Mode of Operation ............................ 26
Zone Panel (BAYSENS006B) .................................... 26
Zone Panel (BAYSENS008B) .................................... 26
Remote Panel W/O NSB (BAYSENS010B) ............... 26
Remote Panel with NSB (BAYSENS019*) ................ 26
Variable Air Volume Mode of Operation ........................ 27
Default Discharge Air Control ................................... 27
Remote Panel with NSB (BAYSENS020*) ................ 27
Remote Panel W/O NSB (BAYSENS021A) ............... 28
Remote Zone Sensor (BAYSENS013*) .................... 28
Remote Zone Sensor (BAYSENS014*) .................... 28
Remote Zone Sensor (BAYSENS017B) ................... 28
High Temperature Sensor (BAYFRST001A) ............. 28
Remote Zone Sensor (BAYSENS016A) ................... 28
Remote Minimum Position Potentiometer
(BAYSTAT023A) ......................................................... 29
Space Temperature Averaging ................................. 29
Unit Control Modules
RTRM - ReliaTel Refrigeration Module ........................ 30
ECA - Economizer Actuator
(Optional) ....................................................................... 30
RTAM - ReliaTel Airhandler Module ............................. 30
Conventional Thermostat Connections ........................ 30
Economizer Operation with a Coventional Thermostat
....................................................................................... 30
LCI - LonTalk® Communication Interface .................... 30
TCI - Trane Communication
Interface (Optional) ........................................................ 30
System Operation
ReliaTel Control Features ............................................. 31
Economizer Operation with
CV Controls ................................................................ 31
Mechanical Cooling without
an Economizer ............................................................ 32
Zone Temperature - Occupied Cooling ...................... 32
Zone Temperature - Occupied Heating ...................... 32
Supply Fan ................................................................. 32
Supply Air Tempering ................................................ 32
Variable Air Volume Applications .................................. 33
Supply Air Temperature Control -
Occupied Cooling ....................................................... 33
Supply Air Temperature Control with an
Economizer ................................................................. 33
Zone Temperature Control without
a Night Setback Panel or ICS -
Unoccupied Cooling ................................................... 33
Zone Temperature Control without a
Night setback Panel or ICS -
Unoccupied Heating ................................................... 33
Morning Warm-up Control .......................................... 33
Daytime Warm-up Control .......................................... 33
Supply Duct Static Pressure Control.......................... 33
Supply Air Temperature Reset ................................... 34
Constant Volume or Variable Air Volume
Applications .................................................................... 34
Off Mode ..................................................................... 34
Zone Temperature - Unoccupied Cooling .................. 34
Zone Temperature - Unoccupied Heating .................. 34
Mechanical Cooling with an Economizer ................... 34
Gas Heat Control ........................................................ 34
Electric Heat Control .................................................. 34
Clogged Filter ............................................................ 35
Ventilation Override Control ...................................... 35
Emergency Stop ......................................................... 35
Low Pressure Control ................................................ 35
High Pressure Cutout ................................................ 35
Power Exhaust Control .............................................. 35
Compressor Winding Protection ............................... 35
Lead/Lag Control ....................................................... 35
Coil Frost Protection ................................................... 35
Condenser Fan/Compressor Sequencing Control ... 36
Unit Start-Up
Preparing the Unit for Operation ................................... 37
Electrical Phasing ......................................................... 37
Voltage Supply and Voltage Imbalance ........................ 37
Supply Voltage ........................................................... 37
Voltage Imbalance ..................................................... 38
Starting the Unit ............................................................. 38
Test Modes ..................................................................... 38
Verifying Proper Fan Rotation ....................................... 38
Verifying Proper Air Flow (CFM)
(CV, IGV's or VFD's) ...................................................... 40
Exhaust Fan Operation .................................................. 40
Economizer Damper Adjustment ................................... 46
Manual Fresh Air Damper .............................................. 47
Starting the Compressors .............................................. 48
Compressor Oil ........................................................... 48
Scroll Compressor Operational Noises ...................... 53
Compressor Crankcase Heaters ................................... 53
At Shutdown: .................................................................. 53
At Low Ambient Start-Up ............................................... 53
During Normal Operation ............................................... 53
Charging by Subcooling ................................................. 53

3
Table of Contents (Continued)
SystemTroubleshooting
System Status Checkout ............................................... 63
Method 1 ........................................................................ 63
Method 2 ........................................................................ 64
Resetting Cooling and Ignition Lockout ....................... 64
Method 1 (from the space) ......................................... 64
Method 2 (from the unit) ............................................. 64
Zone Temperature Sensor Service
Indicator ......................................................................... 64
Clogged Filter Switch .................................................... 65
Fan Failure Switch ......................................................... 65
Zone Temperature Sensor Test
Procedures .................................................................... 65
Zone Temperature Thermistor .................................... 65
Cooling and Heating Setpoint ................................... 65
System Model and Fan Selection .............................. 65
LED Indicator Test ...................................................... 65
Programmable & Digital Zone Sensor
Test Procedure ............................................................... 65
RTRM Default Operation ............................................... 66
CV and VAV Units ....................................................... 66
DIP Switch Settings ................................................... 66
ECA Test Procedure ...................................................... 66
VFD Testing .................................................................... 68
System Troubleshooting Chart ...................................... 69
Component Failure Mode ............................................. 73
VFD Programming Parameters ..................................... 75
Warranty Information ..................................................... 77
UV Lights ....................................................................... 77
Heater Start Up
Gas Heat Units ............................................................... 54
Electric Heat Units ......................................................... 54
Final Unit Checkout
For Constant Volume Units; ....................................... 54
For Variable Air Volume Units; ................................... 54
Mechanical Cooling Sequence Of Operation
Units without an Economizer ......................................... 55
Units with An Economizer .............................................. 55
Economizer Operation Dry Bulb .................................... 55
Economizer Operation Reference
Enthalpy ......................................................................... 55
Economizer Operation Comparative
Enthalpy ......................................................................... 56
Gas Heat Sequence Of Operation ................................. 56
Electric Heat Sequence Of Operation ........................... 56
Service and Maintenance
Fan Belt Adjustment ....................................................... 57
Monthly Maintenance .................................................... 59
Filters ............................................................................. 59
Cooling Season ............................................................. 59
Heating Season ............................................................. 60
Coil Cleaning ................................................................. 60
Maintenance Log ........................................................... 62

4
Figures and Tables
Figure 1
Unit Dimensions for TC_, TE_, and YC_330,
360 and 420 MBH Units (Low Heat) ................................ 8
Figure 1 (Continued)
Unit Dimensions for YC_330, 360 and
420 MBH Units (High Heat) ............................................. 9
Figure 1 (Continued)
Unit Dimensions for TC_, TE_, and YC_480
and 600 MBH Units (Low & High Heat) ......................... 10
Figure 1 (Continued)
Fresh Air and Power Exhaust Hood
Dimensions for TC_, TE_, and YC_ Units ...................... 11
Figure 2
Location of shipwith Items for TC_, TE_,
and YC_ Units ................................................................. 11
Figure 3
Center of Gravity ............................................................ 14
Figure 4
Unit Rigging .................................................................... 15
Figure 5
Condensate Trap Installation ......................................... 16
Figure 6
O/A Pressure Sensor Kit ................................................ 16
Figure 7
Gas Train Configuration for Low Heat Units .................. 18
Figure 8
Typical Field Power Wiring ............................................ 20
Figure 9
Electrical Wire Sizing and Protection
Device Equations ........................................................... 22
Figure 10
Typical Field Wiring Requirements for
CV Control Options ........................................................ 24
Figure 11
Typical Field Wiring Requirement for
VAV Control Options ...................................................... 25
Figure 12
Condenser Fan Location ............................................... 36
Figure 13
VAV Test Modes ............................................................. 39
Figure 14
Supply Fan Performance Curves .................................. 41
Figure 15
Economizer (O/A) Damper Assembly ............................ 47
Figure 16
Typical Belt Tension Gauge ........................................... 57
Figure 17
Belt Deflection ................................................................ 58
Table 1
Minimum Operating Clearances for
Unit Installation .............................................................. 13
Table 2
Slope Allowances ........................................................... 14
Table 3
Unit Weights and Point Loading Weights ...................... 15
Table 4
Optional Component Weights ........................................ 15
Table 5
Sizing Natural Gas Pipe Mains & Branches .................. 18
Table 5-1
Specific Gravity Multipliers
Table 6
27.5 - 50 Ton Electrical Service Sizing Data ................. 20
Table 7
AC Conductors ............................................................... 23
Table 8
DC Conductors .............................................................. 23
Table 9-1
RTRM Zone Sensor/Thermostat Connections ............. 25
Table 9
Variable Air Volume Mode Operation ........................... 27
Table 10
Temperature versus Resistance ................................... 29
Table 12
Percent of Damper Travel .............................................. 32
Table 13
Compressor Staging with Lead/Lag Disabled ............... 32
Table 14
Economizer Configuration Table .................................... 34
Table 15
Ventilation Override Sequence ...................................... 35
Table 16
Condenser Fan Sequence ............................................. 36
Table 17
TC*/YC* 330 Through 600 MBH Economizer
(R/A) Damper Pressure Drop ........................................ 42
Table 18
TC*, TE* & YC* Component Pressure Drops ................ 43
Table 19
TC*, TE* & YC* 27.5 through 35 Ton
Supply Fan Performance ............................................... 44
Table 20
Supply Fan Drive Selection ........................................... 45
Table 21
Power Exhaust Fan Performance .................................. 45
Table 22
Economizer (O/A) Damper Static
Pressure Setup .............................................................. 46
Table 23
Operating Pressures ...................................................... 49
Table 24
40 Ton Dual Circuit Operating Pressures ...................... 51
Table 25
50 Ton Dual Circuit Operating Pressures ...................... 52
Table 26
Humidity versus Voltage Input ....................................... 55
Table 27
Grease Recommendations ............................................ 59
Table 28
Sample Operator's Maintenance Log ........................... 61
Table 29
VFD Programming Parameters ..................................... 74

5
Model Number Description
All products are identified by a multiple character model
number that precisely identifies a particular type of unit. An
explanation of the alphanumeric identification code used
with the unit is provided below. Its use will enable the
owner/operator, installing contractors and service techni-
cians to define the unit's specific components, type of appli-
cation, i.e. CV or VAV, and control options for a particular
unit.
When ordering replacement parts or requesting service, be
sure to refer to the specific model number, serial number,
and DL number (if applicable) stamped on the unit name-
plate.
Unit Nameplate
A Mylar unit nameplate is located on the unit's corner sup-
port just below the main power entrance access into the
control panel. It includes the unit model number, serial num-
ber, electrical characteristics, weight, refrigerant charge, as
well as other pertinent unit data.
Compressor Nameplate
The Nameplate for the Scroll Compressor is located on the
compressor lower housing.
1,2 - Unit Function 11 - Exhaust 16 - S
y
stem Control
TC = DX Cooling, No Hea
t
O = None 1 = Constant Volume
TE = DX Cooling, Electric Hea
t
1 = Barometric Relief 2 = VAV Supply Air Temperature
YC = DX Cooling, Natural Gas Heat (Available w/Economizer only) Control w/o Inlet Guide Vanes
2 = Power Exhaust Fan 3 = VAV Supply Air Temperature
3 - Unit Airflow Desi
g
n(Available w/Economizer only) Control w/ Inlet Guide Vanes
D = Downflow Configuration 4 = VAV Supply Air Temperature
H = Horizontal Configuration 12 - Filter Control w/ Variable Frequency Drive
A = Standard 2" Throwaway 5 = VAV Supply Air Temperature Control
4,5,6 - Nominal Coolin
g
Ca
p
acit
y
B = High Efficiency 2" Throwaway w/Variable Frequency Drive and Bypass
60HZ 50HZ C = High Efficiency 4" Throwaway Note: Sensors are not included with these options.
330 = 27.5 Tons 275 = 22.9 Tons They must be ordered separately.
360 = 30 Tons 305 = 25.0 Tons 13 - Su
pp
l
y
Fan Motor HP
420 = 35 Tons 350 = 29.2 Tons 1 = 7.5 HP STD. Efficiency 17 throu
g
h 31 - Miscellaneous
480 = 40 Tons 400 = 33.3 Tons 2 = 10 HP STD. Efficiency A = Service Valves (See Note 4)
600 = 50 Tons 500 = 41.7 Tons 3 = 15 HP STD. Efficiency B = Through the Base Electrical Access
4 = 20 HP STD. Efficiency C = Non-Fused Disconnect Switch
7 - Ma
j
or Develo
p
ment Se
q
uence 5 = 7.5 HP High Efficiency with External Handle
A = Firs
t
6 = 10 HP High Efficiency D = Factory-Powered 15Amp GFI Convenience
7 = 15 HP High Efficiency Outlet and a Non-Fused Disconnec
t
8 = 20 HP High Efficiency Switch w/ External Handle
8 - Power Su
pp
l
y
(
See Note 1
)
E = Field-Powered 15A GFI Convenience Outle
t
C = 380/50/3 F = 230/60/3 14 - Su
pp
l
y
Fan Drive Selection F = ICS Control Option - Trane Communication
D = 415/50/3 4 = 460/60/3 (See Note 3 & 5) Interface
E = 208/60/3 5 = 575/60/3 A = 550 RPM H = 500 RPM G = Ventilation Override
B = 600 RPM J = 525 RPM H = Hinged Service Access
9 - Heatin
g
Ca
p
acit
y
C = 650 RPM K = 575 RPM J = Condenser Coil Guards
(See Note 2) D = 700 RPM L = 625 RPM K = LCI (Lontalk)
O = No Hea
t
E = 750 RPM M = 675 RPM 0 = Unused
L = Low Heat F = 790 RPM N = 725 RPM M = Stainless Steel Drainpans
H = High Hea
t
G = 800 RPM N = Black Epoxy Pre-Coated Coil
J = Low Heat Stainless Steel P = Discharge Temperature Senso
r
H = High Heat Stainless Steel 15 - Fresh Air O
p
tions R = Clogged Filter Switch
A = No Fresh Air
Note: When the second digit is "E" B = 0 - 25% Manual Damper
(Electric Heat), values apply to the C = 0 - 100% Economizer with Dry
ninth (9) digit. Bulb Control Notes:
A = 36 K
W
D = 0 - 100% Economizer with 1. All voltages are "Across the line" start.
B = 54 K
W
Reference Enthalpy Control 2. Electric Heat KW ratings are based on voltage
C = 72 KW E = 0 - 100% Economizer with ratings of 240/480/600 volts.
D = 90 KW Differential Enthalpy Control 3. Supply fan drives A through G are used with
E = 108 KW F = "C" Option with Low Leak 27.5 - 35 Ton units only. Drives H through N are
Fresh Air Dampe
r
used with 40 and 50 Ton units.
10 - Desi
g
n Se
q
uence G = "D" Option with Low Leak 4. Option includes: Discharge, Liquid, and Suction
P* = ReliaTel Controls Fresh Air Dampe
r
Valves.
*P or late
r
H = "E" Option with Low Leak 5. RPM's are for 60 HZ units. Multiply by 5/6 fo
r
Fresh Air Dampe
r
50 HZ RPM's.
YCD4 8 0 A4 HA1 A4 AD1 ABCDEF GHJ KL MNPR
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
Sample Model
Number:
Digit:

6
About This Manual
CAUTION – Indicates a potentially hazardous
situation which, if not avoided, may result in minor or
moderate injury. It may also be used to alert against
unsafe practices.
Commonly Used Acronyms/Abbreviations
BAS = building automation system
CFM = cubic feet per minute
COMM = Module Designation for TCI/LCI
CV = constant volume
CW = clockwise
CCW = counterclockwise
DSP = direct space pressure control
DTS = discharge air sensor
DWU = Daytime Warm-up
E/A = exhaust air
ECA = Economizer Actuator
F/A = fresh air
FFS = fan failure switch
ICS = Integrated Comfort System (See BAS)
IDM = indoor fan motor
IGV = inlet guide vanes
I/O = input/output
IOM = installation, operation and maintenance
manual
(Ships with each unit)
LCI = LonTalk® Communication Interface
LCI-R = LonTalk Communication Interface with
ReliaTel
LH = left hand
MAS = mixed air sensor
MAT = mixed air temperature
MWU = morning warm up
NSB = night setback (programmable ZSM
BAYSENS019*, 20*)
O/A = outside air
OAH = outside air humidity
OAT = outside air temperature
PSIG = pounds per square inch gauge pressure
R/A = return air
RAH = return air humidity
RAT = return air temperature sensor
RH = right hand
RPM = revolutions per minute
RTAM = ReliaTel Airhandler Module
RTOM = ReliaTel Options Module
RTRM = ReliaTel Refrigeration Module
S/A = supply air
SPT = static pressure transducer
TCI = Trane communication interface
TCO = temperature cutout
VAV = variable air volume
VFD = Variable Frequency Drive
VHR = ventilation heat relay (VAV box relay)
W.C. = water column
XFSP = exhaust fan setpoint
ZSM = sensor, zone sensor, zone sensor module,
zone panel
Literature Change History
RT-SVN17C-EN (March 2005)
Revised issue: Updated Gas Heat Sequence of Operation
Section. Provides specific installation, operational, and
maintenance instructions for TC_, TE_, andYC_ units with
"P" and later design sequence.
RT-SVN17C-EN (January 2005)
Revised issue: Added Capacitor Discharge Warning. Pro-
vides specific installation, operational, and maintenance
instructions for TC_, TE_, andYC_ units with "P" and later
design sequence.
RT-SVN17C-EN (October 2004)
Revised issue: Supply fan proving switch change. Provides
specific installation, operational, and maintenance instruc-
tions for TC_, TE_, andYC_ units with "P" and later design
sequence.
RT-SVN17B-EN (July 2004)
Revised issue: alternate supply fan and belt supplier
added. Provides specific installation, operational, and
maintenance instructions for TC_, TE_, andYC_ units with
"M" and later design sequence.
RT-SVN17A-EN (April 2004)
Revised issue: ReliaTel Controls added--provides specific
installation, operational, and maintenance instructions for
TC_, TE_, and YC_ units with "M" and later design se-
quence.
YC-IOM-11 (October 2001)
Original issue: provides specific installation, operational,
and maintenance instructions for TC_, TE_, and YC_ units
with "H" and later design sequence.
Manual Overview
One copy of the appropriate service literature ships inside
the control panel of each unit.The procedures discussed in
this manual should only be performed by qualified, experi-
enced HVAC technicians.
Note: Do Not release refrigerant to the atmosphere!
If adding or removing refrigerant is required, the
service technician must comply with all federal,
state, and local laws.
This booklet describes the proper installation, start-up, op-
eration, and maintenance procedures for TC_, TE_, and
YC_27.5 through 50 Ton CV (Constant Volume) and VAV
(Variable Air Volume) applications. Refer to page 2 for a de-
tailed table of contents listing specific topics. Refer to the
"System Troubleshooting" section at the end of this manual
for troubleshooting information.
By carefully reviewing the information within this manual
and following the instructions, the risk of improper operation
and/or component damage will be minimized.
It is important that periodic maintenance be performed to
help assure trouble free operation.A maintenance schedule
is provided at the end of this manual. Should equipment
failure occur, contact a qualified service organization with
qualified, experienced HVAC technicians to properly diag-
nose and repair this equipment.
Hazard Identification
WARNING– Indicates a potentially hazardous
situation which, if not avoided, could result in death or
serious injury.

7
About the Unit
Each package rooftop unit ships fully assembled and
charged with the proper refrigerant quantity from the fac-
tory. They are controlled by a microelectronic unit control
processor. Several solid state modules are grouped to form
the "Control System". The number of modules within any
given control system will be dependent upon the options
and accessories ordered with the unit. Acronyms are used
extensively throughout this manual when referring to the
"Control System" (see acronyms/abbreviations previous
page).
Basic unit components include:
Scroll compressors
One (1) Intertwined Evaporator Coil
One (1) Intertwined Condenser Coil
One (1) Supply Fan
Three (3) to Four (4) Condenser Fans
Filters (type is dependent on option selection)
Overall unit dimensional data is illustrated in Figure 1.
WARNING
Fiberglass Wool
Product contains fiberglass wool. Disturbing the insula-
tion in this product during installation, maintenance or
repair will expose you to airborne particles of glass
wool fibers and ceramic fibers known to the state of
California to cause cancer through inhalation. Glass
wool fibers may also cause respiratory, skin or eye irri-
tation.
Precautionary Measures
-Avoid breathing fiberglass dust.
-Use a NIOSH approved dust/mist respirator.
-Avoid contact with the skin or eyes. Wear long-
sleeved, loose-fitting clothing, gloves, and eye
protection.
-Wash clothes separately from other clothing:
rinse washer thoroughly.
-Operations such as sawing, blowing, tear-out, and
spraying may generate fiber concentrations requiring
additional respiratory protection. Use the appropriate
NIOSH approved respiration in these situations.
First Aid Measures
Eye Contact - Flush eyes with water to remove
dust. If symptoms persist, seek medical attention.
Skin Contact - Wash affected areas gently with soap
and warm water after handling.
An optional roof curb, specifically designed for the Voyager
commercial rooftop units is available from Trane. The roof
curb kit must be field assembled and installed according to
the latest edition of CURB-IN-35.
Unit Inspection
As soon as the unit arrives at the job site:
[ ] Verify that the nameplate data corresponds to the sales
order and bill of lading (including electrical data).
[ ] Visually inspect the exterior of the unit, including the roof,
for physical signs of shipping damage.
[ ] Check for material shortages. Figure 2 illustrates where
"ship with" items are placed inside the unit.
If the job site inspection reveals damage or material short-
ages, file a claim with the carrier immediately.Specify the
type and extent of the damage on the "bill of lading" before
signing. Do not install a damaged unit without the Appropri-
ate Trane sales representative's approval!
[ ] Visually check the internal components for shipping dam-
age as soon as possible after delivery and before it is
stored. Do not walk on the sheet metal base pans.
WARNING
No Step Surface!
Do not walk on the sheet metal drain pan. Walking on
the drain pan could cause the supporting metal to col-
lapse. Failure of the drain pan could result in death or
serious injury.
Bridging between the unit's main supports may consist
of multiple 2 by 12 boards or sheet metal grating.
[ ] If concealed damage is discovered, notify the carrier's
terminal office immediately by phone and by mail. Con-
cealed damage must be reported within 15 days.
Request an immediate joint inspection of the damage by
the carrier and the consignee. Do not remove the dam-
aged material from the receiving location. Take photos of
the damage, if possible. The owner must provide reason-
able evidence that the damage did not occur after deliv-
ery.
Storage
Take precautions to prevent condensate formation inside
the unit's electrical components and motors when:
a. The unit is stored before it is installed; or,
b. The unit is set on the roof curb and temporary
auxiliary heat is provided in the building.
Isolate all side panel service entrances and base pan open-
ings (e.g., conduit holes, S/A and R/A openings, and flue
openings) to minimize ambient air from entering the unit un-
til it is ready for start-up.
Do not use the unit's heater as temporary heat without com-
pleting the start-up procedures detailed under "Unit Start-
Up".
Trane will not assume responsibility for equipment damage
resulting from accumulation of condensate on the unit's
electrical components.

8
Figure 1 Unit Dimensions for TC_, TE_, and YC_330, 360 and 420 MBH Units (Low Heat)

9
Figure 1 (continued) Unit Dimensions for YC_330, 360 and 420 MBH Units (High Heat)

10
Figure 1 (continued) Unit Dimensions for TC_, TE_, and YC_480 and 600 MBH Units (Low & High Heat)

11
Figure 1 (continued)
Fresh Air and Power Exhaust Hood Dimensions for TC_, TE_, and YC_ Units
Figure 2
Location of Shipwith Items for TC_, TE_, and YC_ Units

12
Installation
The checklist listed below is a summary of the steps re-
quired to successfully install a Voyager Commercial rooftop
unit. This checklist is intended to acquaint the installing per-
sonnel with what is required in the installation process. It
does not replace the detailed instructions called out in the
applicable sections of this manual.
General Unit Requirements
Downflow Models Only:
[ ] Assemble and install the roof curb, including necessary
gaskets. (See the current edition of CURB-IN-35.) Make
sure the curb is level.
[ ] Install and secure the ductwork to the curb. Refer to the
current addition of CURB-IN-35.
All Units:
[ ] Check unit for shipping damage and material shortage.
Refer to page 7, Unit inspection.
[ ] Rigging the unit. Refer to page 15, Figure 4.
[ ] Placing the unit on curb; check for levelness. Refer to
page 13.
[ ] Ensure that the unit-to-curb seal is tight and without
buckles or cracks.
[ ] Install an appropriate drain line to the evaporator conden-
sate drain connections, as required. Refer to Figure 5 on
page 16.
[ ] Service Valve Option; Refer to page 48, "Starting the
Compressors".
[ ] Return/Fresh-air damper adjustment. Refer to page 46,
Economizer Damper Adjustments.
Electrical Requirements
(See page 20, Field Installed Electrical Power Wiring)
[ ] Verify that the electrical power supply characteristics
comply with the unit nameplate specifications.
[ ] Inspect all control panel components; tighten any loose
connections.
[ ] Connect properly sized and protected power supply wir-
ing to a field supplied/installed disconnect and unit
power terminal block HTB1, or to the optional unit-
mounted disconnect switch.
[ ] Properly ground the unit.
Field Installed Control Wiring (Figure 9 & Figure 10)
Note: All field-installed wiring must comply with
NEC and applicable local codes.
[ ] Complete the field wiring connections for the constant
volume controls as applicable. Refer to the "Low Voltage
Wiring" section on page 23 for guidelines.
[ ] Complete the field wiring connections for the variable air
volume controls as applicable. Refer to the "Low Voltage
Wiring" section on page 23 for guidelines.
Gas Heat Requirements
(See page 17, Field Piping)
[ ] Gas supply line properly sized and connected to the unit
gas train.
[ ] All gas piping joints properly sealed.
[ ] Drip leg Installed in the gas piping near the unit.
[ ] Gas piping leak checked with a soap solution. If piping
connections to the unit are complete, do not pressurize
piping in excess of 0.50 psig or 14 inches w.c. to prevent
component failure.
[ ] Main supply gas pressure adequate.
[ ] Flue Tubes clear of any obstructions.

13
Installation (Continued)
Recommended Clearances
Adequate clearance around and above each Voyager Com-
mercial unit is required to ensure proper operation and to al-
low sufficient access for servicing.
If the unit installation is higher than the typical curb elevation,
a field constructed catwalk around the unit is recommended
to provide safe, easy access for maintenance and servicing.
Table 1 lists the recommended clearances for single and
multiple unit installation. These clearances are necessary to
assure adequate serviceability, cataloged capacities, and
peak operating efficiency.
If the clearances available on the job site appear to be inad-
equate, review them with your Trane sales representative.
Roof Curb and Ductwork
The curbs for the 27.5 to 50 Ton commercial rooftop units
enclose the entire unit base area. They are referred to as
"full perimeter" type curbs.
Step-by-step instructions for the curb assembly and installa-
tion with curb dimensions and curb configuration for "A", "B",
and "C" cabinets ship with each Trane accessory roof curb
kit. (See the latest edition of CURB-IN-35) Follow the instruc-
tions carefully to assure proper fit when the unit is set into
place.
The S/A and R/A ductwork adjoining the roof curb must be
fabricated and installed by the installing contractor before the
unit is set into place. Trane curbs include flanges around the
openings to accommodate duct attachment.
Ductwork installation recommendations are included in the
instruction booklet that ships with each Trane accessory roof
curb kit.
Note: For sound consideration, cut only the holes in
the roof deck for the supply and return duct
penetration. Do Not remove the roof decking from
the inside perimeter of the curb.
If a Trane curb accessory kit is not used;
a. The ductwork can be attached directly to the S/A and
R/A openings. Be sure to use a flexible duct
connector at the unit.
b. For "built-up" curbs supplied by others, gaskets must
be installed around the curb perimeter flange,
S/A opening, and R/A openings.
c. Insulation must be installed on the bottom of the
condenser section of the unit.
Horizontal Ductwork
When attaching the ductwork to a horizontal unit, provide a
water tight flexible connector at the unit to prevent noise
transmission from the unit into the ductwork. Refer to Figure
1 for the S/A and R/A opening dimensions.
All outdoor ductwork between the unit and the structure
should be weather proofed after installation is completed.
If optional power exhaust is selected, an access door must
be field-installed on the horizontal return ductwork to pro-
vide access to exhaust fan motors.
Unit Rigging and Placement
1. Verify that the roof curb has the proper gaskets installed
and is level and square to assure an adequate curb-to-
unit seal.
The units must be as level as possible in order to assure
proper condensate flow out of the unit. The maximum side-
to-side and end-to-end slope allowable in any application is
listed in Table 2.
Table 1
Minimum Operating Clearances for Unit Installation
Recommended Clearances Condenser Coil**
Single Unit Econo / Exhaust Orientation Service Side
End End / Side Access
TC*, TE*, YC* 6 Feet 8 Feet / 4 Feet 4 Feet
27.5 thru 50 Tons
Distance Between Units
Multiple Unit Econo / Exhaust Service Side
End End / Side Access
TC*, TE*, YC* 12 Feet 16 Feet / 8 Feet 8 Feet
27.5 thru 50 Tons
* Horizontal and Downflow Units.
** Condenser coil is located at the end and side of the unit.

14
Installation (Continued)
2. Attach adequate strength lifting cables to the lifting lugs
within the base rail.
Table 3 lists the unit weights and corner weights. To obtain
the total unit weight, add the accessory weight listed in Table
4 to the base unit weight.
The unit center-of-gravity location and dimensions are shown
in Figure 3.
Figure 4 illustrates the Installation of spreader bars to protect
the unit and to assure a uniform lift. Note that the minimum
distance between the lifting hook and the top of the unit
should be 7 feet.
3. Test-lift the unit to check all rigging and balance; make any
rigging adjustments necessary.
4. Lift the unit and position it over the curb. Align the base
rails of the unit up with the curb.
5. Lower the unit onto the curb. Make sure that the gasket on
the curb remains intact when positioning the unit.
Table 2
Cabinet End to End Side to Side
(inches) (inches)
"A"
(27.5 - 35 Ton Low Heat) 3 1/2 1 5/8
"B"
(27.5 - 35 Ton High Heat) 4 1 5/8
"C"
(All 40 and 50 Ton Units) 4 1/2 1 5/8
Do not exceed these allowances. Correct the im
p
ro
p
er
slope by building up the curb base. The material
used to raise the base must be adequate to
support both the curb and the unit weight.
WARNING
Heavy Objects!
Do not use cables (chains or slings) except as shown.
Each of the cables (chains or slings) used to lift the unit
must be capable of supporting the entire weight of the
unit. Lifting cables (chains or slings) may not be of the
same length. Adjust as necessary for even unit lift. Other
lifting arrangements may cause equipment or property-
only damage. Failure to properly lift unit may result in
death or serious injury.
Use spreader bars as shown in the diagram. Refer to the
Installation manual or nameplate for unit weight. Refer
to the Installation instructions located inside the control
panel for further rigging information.
Figure 3
Center of Gravity
Unit Model Low Heat Dimension High Heat Dimension
AB AB
YC*330* 88 33 101 33
YC*360* 88 33 101 33
YC*420* 88 33 101 33
YC*480* 114 33 114 33
YC*600* 114 33 114 33
TC,TE*330* 88 33 N/A
TC,TE*360* 88 33 N/A
TC,TE*420* 88 33 N/A
TC,TE*480* 114 33 N/A
TC,TE*600* 114 33 N/A
Note: Center-of-
g
ravit
y
dimensions are a
pp
roximate, and are
based on the unit e
q
ui
pp
ed with:
standard coils standard efficiency motors
economizer inlet guide vanes
throwaway filters high heat option
Example:
Locating the center-of-gravity for a YC-360 MBH High Heat
unit with 100% Exhaust.
A = 101 inches inward from the compressor end
B = 33 inches inward from the control panel side
Center-of-Gravity (inches)

15
Figure 4
Unit Rigging
Table 3
Unit Weights and Point Loading Weights
Basic Unit Wei
g
hts (1) Variable Frequenc
y
Drive Point Loadin
g
Unit YC YC TC TE Avera
g
e Wei
g
ht
Model Low Heat Hi
g
h Heat W/O B
y
pass With B
y
pass A B C D E
F
**D330 3650 4012 3520 3553 85 115 843 883 481 642 682 481
**H330 3650 4077 3565 3598 85 115 856 897 489 652 693 489
**D360 3730 4092 3600 3633 85 115 859 900 491 655 696 491
**H360 3730 4142 3600 3633 85 115 870 911 497 663 701 497
**D420 3815 4177 3685 3718 115 150 877 919 501 668 710 501
**H420 3815 4227 3685 3718 115 150 888 930 507 676 719 507
**D480 4765 4885 4540 4575 115 150 1026 1075 586 782 830 586
**H480 4790 4915 4540 4575 115 150 1032 1081 590 786 836 590
**D600 4935 5055 4710 4745 115 150 1062 1112 607 809 859 607
**H600 4960 5085 4710 4745 115 150 1068 1119 610 814 864 610
Table 4
Optional Component Weights
Weights of Optional Components
Hi-Static/ Factor
y
Roof
Hi-Eff 0-25% Inlet Thru-the Non-Fused GFI with Curb
Unit Barometric Power Supply Fan Manual Guide Service Base Disconnect Disconnect Weights
Model Relief Exhaust Motors (2) Damper Econo Vanes Valves Electric Switch Switch Lo Hi
**D330 110 165 120 50 260 55 11 6 30 85 310 330
**H330 145 200 120 50 285 55 11 6 30 85 310 330
**D360 110 165 120 50 260 55 11 6 30 85 310 330
**H360 145 200 120 50 285 55 11 6 30 85 310 330
**D420 110 165 120 50 260 55 11 6 30 85 310 330
**H420 145 200 120 50 285 55 11 6 30 85 310 330
**D480 110 165 125 50 290 70 18 6 30 85 365
**H480 145 200 125 50 300 70 18 6 30 85 365
**D600 110 165 125 50 290 70 18 6 30 85 365
**H600 145 200 125 50 300 70 18 6 30 85 365
Notes:
(1) Basic unit weight includes minimum Supply Fan motor HP.
(2) Optional high static and high efficiency motor weights are in addition to the standard motor weight included in the basic unit weight.
(3) 6-point loading is identified with corner "A" being nearest to the compressors. Corners B, C, D, E and F are located as you move
clockwise around the unit when viewed from the top.

16
Installation (Continued)
Condensate Drain Connection
Each commercial rooftop unit is equipped with one (1) 1-1/4
inch Female PVC condensate drain connection.
Refer to Figure 2 for the location of the connector. A conden-
sate trap must be installed due to the drain connection being
on the "negative pressure" side of the fan. Install a P-Trap at
the unit using the guidelines in Figure 5.
Pitch the drain line at least 1/2 inch for every 10 feet of hori-
zontal run to assure proper condensate flow.
Ensure that all condensate drain line installations comply
with applicable building and waste disposal codes.
Figure 5
Condensate Trap Installation
O/A Sensor & Tubing Installation
An Outside Air Pressure Sensor is shipped with all units de-
signed to operate on variable air volume applications.
A duct pressure transducer and the outside air sensor is
used to control the discharge duct static pressure to within a
customer-specified controlband. Refer to the illustration in
Figure 6 and the following steps to install the sensor and the
pneumatic tubing.
1. Remove the O/A pressure sensor kit located inside the fan
section. The kit contains the following items;
- an O/A static pressure sensor
- a sensor mounting bracket
- 2' of 3/16" O.D. pneumatic tubing
- mounting hardware
2. Using two #10-32 x 1-3/4" screws provided, install the
sensor's mounting bracket to the factory provided bracket
(near the fan section).
3. Using the #10-32 x 1/2" screws provided, install the O/A
static pressure sensor vertically to the sensor bracket .
4. Remove the dust cap from the tubing connector located
below the sensor in the vertical support.
5. Attach one end of the 2' x 3/16" O.D. factory provided
pneumatic tubing to the sensor's top port, and the other
end of the tubing to the connector in the vertical support.
Discard any excess tubing.
Figure 6

17
Field Installed Gas Piping
Note: Gas pressure in excess of 14" w.c. or 0.5 psig
will damage the gas train.
Failure to use a pressure regulating device will result in in-
correct gas pressures. This can cause erratic operation due
to gas pressure fluctuations as well as damage to the gas
valve.
Oversizing the regulator will cause irregular pulsating flame
patterns, burner rumble, potential flame outages, as well as
possible gas valve damage.
6. Leak test the gas supply line using a soap-and-water solu-
tion or equivalent before connecting it to the gas train.
WARNING
Hazard of Explosion!
Never use an open flame to detect gas leaks. Explosive
conditions may occur. Use a leak test solution or other
approved methods for leak testing. Failure to follow rec-
ommended safe leak test procedures could result in
death or serious injury or equipment or property-only-
damage.
7. Pressure test the supply line before connecting it to the
unit to prevent possible gas valve damage and the unsafe
operating conditions that will result.
Note: Do not rely on gas train shutoff valves to
isolate the unit while conducting gas pressure/leak
test. These valves are not designed to withstand
pressures in excess of 14" w.c. or 0.5 psig.
Connecting the Gas Supply Line to the
Furnace Gas Train
Follow the steps below to complete the installation between
the supply gas line and the furnace. Refer to Figure 7 for the
Gas Train configuration.
1. Connect the supply gas piping using a "ground-joint" type
union to the furnace gas train and check for leaks.
2. Provide adequate support for the field installed gas piping
to avoid stressing the gas train and controls.
3. Adjust the inlet supply gas pressure to the recommended
6" for natural gas or 11" w.c. for LP gas.
General Requirements
All internal gas piping for YC* rooftop units are factory in-
stalled and leak tested. Once the unit is set into place, a gas
supply line must be field installed and connected to the gas
train located inside the gas heat compartment.
WARNING
Hazardous Gases and Flammable Vapors!
Exposure to hazardous gases from fuel substances
have been shown to cause cancer, birth defects or other
reproductive harm. Improper installation, adjustment, al-
teration, service or use of this product could cause flam-
mable mixtures. To avoid hazardous gases and flam-
mable vapors follow proper installation and set up of
this product and all warnings as provided in this
manual. Failure to follow all instructions could result in
death or serious injury.
REFER TO THE INSTALLATION, OPERATION AND MAIN-
TENANCE MANUAL PROVIDED WITH THIS UNIT FOR
PROPER OPERATION INSTRUCTIONS.
Access holes are provided on the unit as shown in Figure 2
to accommodate side panel entry. Following the guidelines
listed below will enhance both the installation and operation
of the furnace.
Note: In the absence of local codes, the installation
must conform with the American National Standard
Z223.1a of the National Fuel Gas Code, (latest
edition).
1. To assure sufficient gas pressure at the unit, use Table 5
to determine the appropriate gas pipe size for the heating
capacity listed on the unit's nameplate.
If a gas line already exists, verify that it is sized large
enough (Table 5) to handle the additional furnace capac-
ity.
2. Take all branch piping from any main gas line from the top
at 90 degrees or side at 45 degrees to prevent moisture
from being drawn in with the gas.
3. Ensure that all piping connections are adequately coated
with joint sealant and properly tightened. Use a piping
compound that is resistant to liquid petroleum gases.
4. Provide a drip leg near the unit.
5. Install a pressure regulator at the unit that is adequate to
maintain 6" w.c. for natural gas and 11" w.c. for LP gas
while the unit is operating in the "High Heat" mode.A
minimum inlet gas pressure of 2.5" w.c. for natural gas
and 8" w.c. for LP gas is required while operating in the
"High Heat" mode.

18
Table 5
Sizing Natural Gas Pipe Mains & Branches
Gas Input (Cubic Feet/Hour)* Notes:
1. If more than one unit is served by
Gas Supply 1-1/4" 1-1/2" 2" 2-1/2" 3" 4" the same main gas supply, consider
Pipe Run (ft) Pipe Pipe Pipe Pipe Pipe Pipe the total gas input (cubic feet/hr.)
and the total length when determining
10 1050 1600 3050 4800 8500 17500 the appropriate gas pipe size.
20 730 1100 2100 3300 5900 12000 2. Obtain the Specific Gravity and
30 590 890 1650 2700 4700 9700 BTU/Cu.Ft. from the gas company.
40 500 760 1450 2300 4100 8300 3. The following example demonstrates
50 440 670 1270 2000 3600 7400 the considerations necessary when
60 400 610 1150 1850 3250 6800 determining the actual pipe size.
70 370 560 1050 1700 3000 6200
80 350 530 990 1600 2800 5800 Example: A 40' pipe run is needed to
90 320 490 930 1500 2600 5400 connect a unit with a 500 MBH furnace to a
100 305 460 870 1400 2500 5100 natural gas supply having a rating of 1,000
125 275 410 780 1250 2200 4500 BTU/Cu.Ft. and a specific gravity of 0.60
150 250 380 710 1130 2000 4100
175 225 350 650 1050 1850 3800 Cu.Ft/Hour = Furnace MBH Input
200 210 320 610 980 1700 3500 Gas BTU/Cu.Ft. X Multiplier (Table 5-1)
Cu.Ft/Hour = 500
* Table is based on a specific gravity of 0.60. Use Table 5-1 for the Table 5 indicates that a 1-1/4" pipe is required.
specific gravity of the local gas supply.
Table 5-1
Specific Gravity Multipliers
Specific
Gravity Multiplier
0.5 1.1
0.55 1.04
0.6 1
0.65 0.96
Figure 7
Gas Train Configuration for Low Heat units (High Heat Units utilize two Gas Trains.)

19
Field Installed Electrical Wiring
Disconnect Switch External Handle
(Factory Mounted Option)
Units ordered with the factory mounted disconnect switch
come equipped with an externally mounted handle. This al-
lows the operator to disconnect power from the unit without
having to open the control panel door. The handle location
and its three positions are shown below;
ON -Indicates that the disconnect switch is closed,
allowing the main power supply to be applied at the unit.
OFF -Indicates that the disconnect switch is open,
interrupting the main power supply at the unit.
OPEN COVER/RESET -Turning the handle to this
position releases the handle from the disconnect switch,
allowing the control panel door to be opened.
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote discon-
nects before servicing. Follow proper lockout/tagout
procedures to ensure the power can not be inadvertently
energized. Failure to disconnect power before servicing
could result in death or serious injury.
Once the door has been opened, it can be closed with the
handle in any one of the three positions outlined above, pro-
vided it matches the disconnect switch position. The handle
can be locked in the "OFF" position. While holding the
handle in the "OFF" position, push the spring loaded thumb
key, attached to the handle, into the base slot. Place the lock
shackle between the handle and the thumb key. This will pre-
vent it from springing out of position.
An overall layout of the field required power wiring is illus-
trated in Figure 8. To insure that the unit's supply power wir-
ing is properly sized and installed, follow the guidelines out-
lined below.
Note: All field installed wiring must conform to NEC
guidelines as well as State and Local codes.
Verify that the power supply available is compatible with the
unit's name plate ratings for all components. The available
power supply must be within 10% of the rated voltage
stamped on the nameplate. Use only copper conductors to
connect the 3-phase power supply to the unit.
CAUTION
Use Copper Conductors Only!
Unit terminals are not designed to accept other types of
conductors. Failure to use copper conductors may re-
sult in equipment damage.
Main Power Wiring
1. Table 6 lists the electrical data. The electrical service must
be protected from over current and short circuit conditions
in accordance with NEC requirements. Protection devices
must be sized according to the electrical data on the
nameplate. Refer to Figure 9 for determining:
a. The appropriate electrical service wire size based on
"Minimum Circuit Ampacity" (MCA),
b. The "Maximum Over current Protection" (MOP)
device.
c. The "Recommended Dual Element fuse size" (RDE).
2. If the unit is not equipped with an optional factory installed
Nonfused disconnect switch, a field supplied disconnect
switch must be installed at or near the unit in accordance
with the National Electrical Code (NEC latest edition). Re-
fer to Figure 9, DSS calculations, for determining correct
size.
Location for the electrical service entrance is shown in Fig-
ure 1. Complete the unit's power wiring connections onto ei-
ther the main terminal block HTB1, or the factory mounted
nonfused disconnect switch inside the unit control panel.
Note: Any electrical entrance holes drilled into the base of
the unit when a thru-the-base option is not used, is the re-
sponsibility of the installing contractor to prevent water from
leaking into the building.
3. Provide proper grounding for the unit in accordance with
local and national codes.
Thru-the-Base Electrical
(Optional Accessory)
Liquid-tite conduit couplings are secured to the base of the
unit for both power and control wiring. Liquid-tite conduit
must be field installed between the couplings and the unit
control box to prevent water leaks into the building.
If the unit is set on the roofcurb and temporary
auxiliary heat is provided in the building, it is
recommended that the electrical and control wiring
conduit opening in the control box be temporarily
sealed to provide a vapor barrier.

20
Figure 8
Typical Field Power Wiring
Table 6
27.5 - 50 Ton Electrical Service Sizing Data
(Electric Heaters Only)
Electric Heat FLA
All FLA's in this table are based on heater operation at 208, 240, 480, and 600
v
Nominal Nominal
Unit Size Unit Heater KW
(Tons) Voltage 36 54 72 90 108
27.5, 30, 35 208 74.9 112.4 n/a n/a n/a
230 86.6 129.9 n/a n/a n/a
460 43.3 65 86.6 108.3 n/a
575 n/a 52 69.3 86.6 n/a
40, 50 208 n/a 112.4 n/a n/a n/a
230 n/a 129.9 n/a n/a n/a
460 n/a 65 86.6 108.3 129.9
575 n/a 52 69.3 86.6 103.9
Note: Heater KW = 1.732 X Applied Voltage X Amps