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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_, and YC_ 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_, and YC_ 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_, and YC_ 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_, and YC_ 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.
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
6
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Table of Contents
Troubleshooting
