Ingersoll-Rand ReliaTel User manual

SSAAFFEETTYY WWAARRNNIINNGG
Only qualified personnel should install and service the equipment The installation, starting up, and servicing of heating, ventilating, and
air-conditioning equipment can be hazardous and requires specific knowledge and training Improperly installed, adjusted or altered
equipment by an unqualified person could result in death or serious injury When working on the equipment, observe all precautions in the
literature and on the tags, stickers, and labels that are attached to the equipment
August 2018 RRTT--SSVVDD0033LL--EENN
ReliaTel™™ Microprocessor Controls
Service & Diagnostic
Support Manual

©2018 Ingersoll Rand RT-SVD03L-EN
Introduction
This publication covers both electromechanical and
ReliaTel™controls Due to the more complex
application and service opportunities, greater
emphasis is placed on units with ReliaTel™controls
This publication does not cover all aspects of service It
assumes the service person is an experienced
commercial service technician with a strong
background in electrical controls and DC circuits If you
are not experienced and fully qualified in HVAC service,
do not attempt to use this manual to service
equipment
Read this manual thoroughly before operating or
servicing this unit
Warnings, Cautions, and Notices
Safety advisories appear throughout this manual as
required Your personal safety and the proper
operation of this machine depend upon the strict
observance of these precautions
The three types of advisories are defined as follows:
WARNING
Indicates a potentially hazardous situation
which, if not avoided, could result in death or
serious injury.
CAU TION
Indicates a potentially hazardous situation
which, if not avoided, could result in minor or
moderate injury. It could also be used to alert
against unsafe practices.
NOTICE
Indicates a situation that could result in
equipment or property-damage only
accidents.
Important Environmental Concerns
Scientific research has shown that certain man-made
chemicals can affect the earth’s naturally occurring
stratospheric ozone layer when released to the
atmosphere In particular, several of the identified
chemicals that may affect the ozone layer are
refrigerants that contain Chlorine, Fluorine and Carbon
(CFCs) and those containing Hydrogen, Chlorine,
Fluorine and Carbon (HCFCs) Not all refrigerants
containing these compounds have the same potential
impact to the environment Trane advocates the
responsible handling of all refrigerants-including
industry replacements for CFCs and HCFCs such as
saturated or unsaturated HFCs and HCFCs
Important Responsible Refrigerant
Practices
Trane believes that responsible refrigerant practices
are important to the environment, our customers, and
the air conditioning industry All technicians who
handle refrigerants must be certified according to local
rules For the USA, the Federal Clean Air Act (Section
608) sets forth the requirements for handling,
reclaiming, recovering and recycling of certain
refrigerants and the equipment that is used in these
service procedures In addition, some states or
municipalities may have additional requirements that
must also be adhered to for responsible management
of refrigerants Know the applicable laws and follow
them
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RT-SVD03L-EN 3
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Copyright
This document and the information in it are the
property of Trane, and may not be used or reproduced
in whole or in part without written permission Trane
reserves the right to revise this publication at any time,
and to make changes to its content without obligation
to notify any person of such revision or change
Trademar s
All trademarks referenced in this document are the
trademarks of their respective owners
Revision History
• Updated J inputs descriptions for RTOM and RTVM
• Added Precedent eFlex 6–10 Tons data
• Additional running changes
IInnttrroodduuccttiioonn

4RT-SVD03L-EN
General Information 10
ReliaTel™10
Precedent™3 to 10 Tons and
Voyager™12 5 to 50 Tons Dedicated
Packaged Rooftops 10
Odyssey™10
ReliaTel™vs Electromechanical 10
ReliaTel™Refrigeration Module
(RTRM) 10
ReliaTel™Air Handler Module
(RTAM) 10
ReliaTel™Air Handler Module
(RTAM) (Standard on VAV) 10
ReliaTel™Option Module
(RTOM) 10
ReliaTel™Ventilation Module
(RTVM) — 27 5 to 50 Tons Units 11
ReliaTel™Ventilation Module
(RTVM) — 3 to 25 Tons Units 11
ReliaTel™Dehumidification Module
(RTDM) 11
Economizer Actuator with Module
(ECA or RTEM) 11
ReliaTel™Electromechanical
Economizer Module (RTEM-EM) 11
Variable Speed Module (VSM) 11
COMM3/4 Communication
Interface 12
LonTalk®Communication
Interface 12
ReliaTel™BACnet®Communication
Interface (BCI-R) 12
Module Flow Diagram 13
Low Voltage Terminal Strip 25
Typical Control Box Layout 26
ReliaTel™Refrigeration Module
(RTRM) 32
RTRM Diagnostics 33
RTRM System LED Diagnostic
Indicator 33
Service - RTRM-J6-10 34
System- RTRM-J6-9 34
Cooling-RTRM-J6-8 35
Heating-RTRM-J6-7 35
HEAT FAIL and COOL FAIL at the
Same Time, RTRM-J6-7 & 8 Pulsing
Voltage 36
Compressor Will not Run, no
Diagnostics 36
Supply Fan OFF, no Diagnostic 36
Heat Pump - Compressors Will not
Run 36
27 5 to 50 Tons Unit Additional
Diagnostics (VAV only) 36
Default Operations 37
BACnet®Operations 37
ReliaTel™Temporary Operation 39
3 to 25 Tons 39
Temporary Sensor (Thermistor)
Attached to J6-1 and J6-2 Only 39
ReliaTel™Option Module (RTOM) 40
RTOM Location 40
3 to 10 Tons 40
12 5 to 50 Tons 40
RTOM Inputs 40
J1, J2 Inputs 40
J3 Inputs 40
J4 Output 41
J4 Input 41
J5 Output 41
J6 Inputs 41
J7 Inputs 41
J8 Input 41
J9 Input 41
J10 Input 41
J11 Output 41
J12 Input 41
Setpoint Potentiometers 42
Discharge Air (DA) Cooling - Setpoint
Lower Limit 43
Voyager™Light Commercial 43
Precedent™44
Odyssey™44
ReliaTel™Ventilation Module
(RTVM) 45
RTVM Location - 27 5 to 50 Tons 45
Light Commercial RTVM Inputs 45
J1, J2 Inputs 45
RTVM Inputs 45
J1, J2 Inputs 45
J3 Inputs 45
J4 Inputs 45
J5 Output 45
J11 Output 45
Setpoint Potentiometers 45
DCV Setpoints - Traq™46
ReliaTel™Dehumidification Module
(RTDM) 47
Table of Contents

RT-SVD03L-EN 5
RTDM Layout - 27 5 to 50 Tons 47
RTDM Inputs/Outputs 47
J4, J2 Inputs 47
J6 Inputs 47
J8 Inputs 47
J1 Output 47
J3 Output 47
J5 Output 47
Single Zone VAV, Multi-Speed and 17
Plus 48
Features and Operation - Voyager™
Light Commercial, Precedent™and
Odyssey™48
Enhanced Dehumidification 48
General Sequence of Evaporator Fan
Operation 48
Indoor Fan Control Description;
Precedent™17 SEER (17 Plus) - Unit
Identification 48
Indoor Fan Control Description;
Backwards Curved (BC) Plenum Fan
Control - Unit Identification 50
Indoor Fan Control Description;
Voyager™Multi Speed and SZVAV
VFD Controlled Evaporator Fan
Motor - Unit Identification 51
Indoor Fan Control Description;
Odyssey™Multi-Speed and SZVAV
VFD Controlled Evaporator Fan
Motor - Unit Identification 52
SZVAV, Multi-Speed and 17 Plus Unit
Outdoor Air Compensation and
Economizer Minimum Position 54
Condensate Drain Pan Overflow
Switch 55
Fresh Air Measurement and Control 56
Sequence for Setting
Calibration 56
Economizer Fault Detection and
Diagnostics 58
Mixed Air Temperature Low Limit
Diagnostic 59
BACnet®Communications Interface
(BCI) 59
LonTalk™Communications Interface
(LCI) 59
Failure and Overriding
Conditions 59
Multi-Speed Indoor Fan 59
Two-Speed Fan Control 59
Multi-Speed PWM Controlled Indoor
Fan with Dual Capacity
Compressor 61
Single Zone VAV 64
Supply Fan Output Control - VFD
Equipped Units 64
Direct Drive Backwards Curve
Plenum Fan Equipped Units 64
PWM Controlled Motor Equipped
Units 64
Supply Fan Mode Operation 64
Ventilation Control 64
Demand Controlled Ventilation 64
Outside Air Damper Minimum
Positions without DCV 64
Space Pressure Control 65
Discharge Air Setpoint (ReliaTel™
Controlled Not User Adjustable) 65
Economizer Cooling 65
Compressor (DX) Cooling 65
Mode Transitions 66
Occupied Heating Operation 66
Heating Sequence 66
Modulating Heat Operation with
Traditional Constant Volume Fan
Operation 66
Supply Air Tempering
Operation 66
Dehumidification Operation 67
Variable Speed (VSPD) Compressor
Control (eFlex™) 69
Multi-Zone VAV Cooling (Traditional
VAV) 70
Occupied DX & Economizing Cooling
Control 70
Unoccupied DX & Economizer
Cooling Control 71
Single Zone VAV Cooling - Supply
Fan Output Signal Control 71
Discharge Air Temperature Control 71
Occupied DX & Economizer Cooling
Control 71
Unoccupied DX & Economizer
Cooling Control 71
Enhanced Dehumidification 71
Active Cooling Mode Operation 71
Idle Mode Operation 72
Condenser Fan Control 72
Test Modes 73
Failure and Protection Conditions 73
Supply Air Temperature on
SZVAV 73
Outside Air Temperature 73
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6RT-SVD03L-EN
Evaporator Coil Frost Protection 74
Extended Time at Compressor Low
Speed (Oil Recovery Mode) 74
High Ambient Operation Protection
(3–5T & 12 5–17 5T eFlex™
Units) 74
Precedent™6T-10T eFlex™Emerson
Compressor Enabled Units 74
Compressor Protection 74
Compressor VFD Alarm Output
Lockout 75
VSM Module Communication
Failure 75
Verifying Proper Air Flow 76
Units with Direct Drive Indoor Fan 76
ReliaTel™Control 76
Electromechanical Control 76
Total System Airflow (ReliaTel™/
Electromechanical) 76
Fan Speed Adjustment 76
MMC Board 76
ECM Board 76
ReliaTel™LED Functions 77
Modules and Codes 77
ReliaTel™Refrigeration Module
(RTRM) 77
ReliaTel™Options Module
(RTOM) 77
ReliaTel™Ventilation Module
(RTVM) 77
ReliaTel™Air Handling Module
(RTAM) 77
ReliaTel™Dehumidification Module
(RTDM) 77
Economizer Actuator Module (ECA),
(RTEM) 77
Ignition Control (IGN) 77
TCI COMM3/4 Interface (Tracer®,
VariTrac®) 77
LCI (LonTalk®) 78
ReliaTel™Test Mode 79
Protocol, Modes and Tests 79
Protocol of Communications 79
Service Test Mode 79
Auto-Cycle Test 79
Resistance Test 79
Step Test 79
Test Modes 80
Service Tips 80
Emergency Stop Input, LTB 5&6
(3J1-12 on RTRM) 80
Fan Proving input, 5J7-6 on
RTOM 80
Compressor Disable Inputs, 3J1-8,
3J3-2 (2 Compressor units) on
RTRM 80
Compressor Proving Circuits, 3J1-9,
3J3-3 (2 Compressor Units) on
RTRM 80
Ventilation Override Mode (VOM), J6
on the RTOM 80
CO2Option Through DCV Input on
ECA 80
ECA Minimum Position
Adjustment 80
Frostat™Input 80
Test Mode Tables 81
ReliaTel™Service Test 93
Thermostats and Sensors 97
Protocol of Communications 97
BAYSENS016* Sensor with plug;
Thermistor Sensor (OAS, SAS, RAS,
CTS) 98
BAYSENS106*/ASYSTAT106* 98
BAYSENS107*/ASYSTAT107* 98
BAYSENS108*/ASYSTAT108* 99
BAYSENS109*/ASYSTAT109* 99
BAYSENS110* 100
BAYSENS077* 100
BAYSENS073* 101
BAYSENS074* 101
BAYSENS119* Programmable Zone
sensor 102
BAYSENS135* Non-Programmable
Zone Sensor 103
High Temperature Sensor
Diagram 105
High Temperature Sensor 105
Operation with a Conventional
Thermostat (Constant Volume) 106
Cooling/Economizer Operation 107
Zone Sensor Module Testing 109
Mechanical Zone Sensor Module 109
Temperature Input 109
Setpoint Input 109
Mode Input 110
Programmable Zone Sensor
BAYSENS119* and BAYSENS019C
(Obsolete) 111
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RT-SVD03L-EN 7
Testing the Programmable Zone
Sensor (PZS) 111
Troubleshooting the Programmable
Zone Sensor 111
RTRM/RTOM - Temperature Inputs 113
Outdoor Air Sensor, Discharge Air
Sensor, Coil Temperature Sensor 113
Terminals to Read Voltage 113
Service Tips 113
Problems to Look for 113
Zone Sensor Averaging 116
COMM3/4 Interface 117
Operation & Troubleshooting 117
Wiring 117
LED’s 117
Communication Problems 117
Direct Spark Ignition Control 119
Texas Instruments, 3 to 10 Tons
Only 119
Sequence of Operation, 3 to 10 Tons
Only 120
1-Stage Units 120
2-Stage Units 120
Precedent™6 to 10 Tons Modulating
Gas Heat Units 120
ReliaTel™Hot Surface Ignition
Control 122
12 5 to 50 Tons, 1 Stage, 2 Stage, and
Modulating Gas Heat 122
Ignition Control Module
Diagnostics 122
Sequence of Operations (1 and 2 heat
units) 122
Heat Pump 124
Demand Defrost 124
Defrost Service Test 124
Defrost Mode Operation 124
Sequence of Operation 124
Emergency Heat Operation 125
Diagnostic Information 125
Independent Circuit Defrost
Operation 125
Economizer 126
ReliaTel™126
Economizer Module Layout 126
ReliaTel™Economizer Layout -
RTEM 127
Economizer Actuator Layout -
Electromechanical 127
VAV Economizer Cooling
Operation 128
Economizer Operation with Zone
Sensor, Programmable Zone Sensor
or ICS 128
Economizer Operation with
Conventional Thermostat (CV
Only) 128
Barometric Relief 129
Power Exhaust 129
Economizer Control Methods 129
Thermostat Notes 129
Economizer Damper Enthalpy
Layout 130
Economizer Operation Enthalpy
Changeover 130
ReliaTel™Economizer Operation &
Inputs 131
Electromechanical Economizer 134
Electromechanical Economizer
Testing 134
3 Position Damper 135
Electromechanical Units 136
Time Delay Relay 136
Fan “Off” Delay Solid State Timer 136
ReliaTel™- Humidity Sensors 137
Outdoor Humidity Sensor 137
Return Humidity Sensor 137
To Test Humidity Sensors 137
ECA Module Voltages 138
RTEM Module Voltage 138
ReliaTel™- Supply Air Tempering
Control 139
Enable Supply Air Tempering 139
Mechanical Zone Sensor
BAYSENS006-11/AYSTAT661-
664 139
Programmable Zone Sensor
BAYSENS019*/AYSTAT666* 139
COMM 3/4 (TCI) 139
LonTalk®(LCI) 139
Voyager™27 5 to 50 tons VAV with
Staged Heat 139
Sequence of Operation 139
Constant Volume Units with Staged
Heat 139
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8RT-SVD03L-EN
Variable Air Volume Units 139
TCI Comm 3/4 140
Discharge Air Sensing 140
3 to 25 Tons Units 140
27 5 to 50 Tons Units 140
Service Note 140
ReliaTel™Ventilation Override 141
Demand Control Ventilation (DCV) 142
C02Sensor Connections 142
RTEM Operation 142
RTEM w/ RTRM v8 0 and Later 142
RTEM w/ RTRM v7 0 and
Earlier 143
Failure and Override
Conditions 144
Honeywell Operation 144
Voyager™27 5 to 50 Tons VAV
Notes 144
Demand Controlled Ventilation (CO2)
Setup for Single Zone VAV, Multi-Speed
and 17 Plus units 144
Initial Set Up 145
Set Up the LOW Fan Speed Damper
Positions 146
Set Up the MEDIUM Fan Speed
Damper Position 146
Set Up the HIGH Fan Speed Damper
Positions 146
Dehumidification 147
Hot Gas Reheat 3 to 25 Tons 147
Sequence of Operation 147
Modulating Dehumidification with Hot
Gas Reheat (27 5 to 50 Tons) 148
Controls Overview 148
Heating/Cooling Changeover 150
Low Ambient Mechanical Cooling
Operation (3 to 25 Ton Units) 151
Evaporator Defrost Control (EDC)
Function 151
ReliaTel™- Condenser Fan 152
Control Logic - 12 5 to 25 Tons 152
Sequence for eFlex™Units 152
Sequencing Control - 27 5 to 50
Tons 152
Independent Circuit Heat Pump -
Odyssey™155
Phase Monitor 156
ReliaTel™3 to 25 Tons 156
Circuits 157
Snubber Circuits 157
High Pressure and Low Pressure Lockout
Circuits 157
LPC Logic 157
LPC Sequence of Operation 157
LPC Operation for 27 5 to 50 Ton
Units with Modulating Reheat 157
HPC Logic 158
HPC Sequence of Operation 158
Transformer Troubleshooting 160
Novar Controls 161
Sequence of Operation 161
General 161
Cooling with an Economizer 161
Cooling without an
Economizer 161
Economizer Set-up 161
[Gas/Electric] Heating 162
Novar Controls Checkout/
Troubleshooting Procedure 162
General 162
Checkout Procedure 162
Constant Volume (CV) and Variable Air
Volume (VAV) 164
Constant Volume (CV) 164
Variable Air Volume (VAV) 164
VAV with ReliaTel™versus VAV with
UCP 164
RTRM - ReliaTel™Refrigeration
Module - (Standard) 164
RTOM - ReliaTel™Options Module -
(Standard) 164
RTAM - ReliaTel™Air Handler
Module - (Standard on VAV) 164
ECA - Economizer Actuator -
(Optional) 164
TCI - Trane®Communication
Interface - (Optional) 165
LCI - LonTalk®Communication
Interface (optional) 165
IGN - Ignition Control Module (YC*
only) 165
Configuration Input 165
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RT-SVD03L-EN 9
Supply Duct Static Pressure
Control 166
Modes of Operation 166
VHR Relay 167
Troubleshooting Tips 167
Application Notes 167
BAYSENS021* Setpoint Input 168
Remote Setpoint Inputs on RTAM
J7 168
Outdoor Air Flow Compensation for
MZVAV Units 172
3 to 50 Tons 172
Setup 172
Operation for RTRM 7 0 and Earlier
with RTEM or Any RTRM with
Honeywell ECA 172
Operation for RTRM 8 0 and Later
with RTEM 172
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10 RT-SVD03L-EN
General Information
ReliaTel™™
ReliaTel™is not the name of a circuit board, but rather
an overall communicating control system consisting of
up to eight communicating modules
ReliaTel™is the name given to the second generation
microprocessor controls developed by Trane®
ReliaTel™controls were first used in the 3 to 10 ton
convertible packaged cooling with electric heat, gas/
electric, and heat pumps ReliaTel™has been added to
other commercial products In April 2003, Voyager™
12 5 to 25 tons dedicated units were converted to
ReliaTel™controls In April 2004, ReliaTel™controls
were added to Voyager™Commercial 27 5 to 50 tons
dedicated units
Precedent™™ 3 to 10 Tons and Voyager™™
12.5 to 50 Tons Dedicated Pac aged
Rooftops
Precedent™3 to 10 ton cooling only and gas/electric
convertible packaged units can be built with either
electromechanical or ReliaTel™controls Voyager™
12 5 to 50 ton units are built with ReliaTel™controls
only All heat pumps are built exclusively with
ReliaTel™controls This publication covers both
electromechanical and ReliaTel™controls Due to the
more complex application and service opportunities,
greater emphasis is placed on units with ReliaTel™
controls
Odyssey™™
Odyssey™6 to 20 ton heat pumps are available with
ReliaTel™controls Odyssey™6 to 25 ton cooling only
units can be built with either electromechanical or
ReliaTel™controls
ReliaTel™™ vs. Electromechanical
NNoottee:: Each ReliaTel ™ module is a communicating
control.
Precedent™3 to 10 tons packaged gas/electric (YSC,
YHC) and cooling only (TSC, THC) are available without
microprocessor controls With electromechanical
controls, zone sensors cannot control the units, nor can
building automation systems communicate with it
Electromechanical units require the use of a thermostat
or relay based control system to directly control relays,
contactors, etc The ignition control and economizer
are different than the ones used with ReliaTel™
Service information for these components are handled
separately in this book
• ReliaTel™controls: 9th digit “R”
• Electromechanical controls: 9th digit “E”
• 27 5 to 50 tons: ReliaTel™controls 10th digit “M” or
greater
ReliaTel™™ Refrigeration Module (RTRM)
Every ReliaTel™unit uses an RTRM The RTRM
provides primary unit control for heating and cooling
In addition, it has built-in logic that controls heating
and cooling staging, minimum run times, diagnostics,
heat pump defrost control, short cycle timing and
more It can be controlled directly by any of the
following:
• Mechanical Zone Sensor Module (ZSM)
BAYSENS106-111*, AYSTAT106*-109*
• Programmable Zone Sensor (BAYSENS119*, 20*,
AYSTAT666*)
• Conventional thermostat BAYSTAT036-038* (or
similar, ASYSTAT701-703*)
NNoottee:: Unlike the previous Micro, a conventional
thermostat does not require any sort of
interface. It can e wired directly to the RTRM.
In addition, the unit can be controlled using Trane®ICS
systems by applying the appropriate interface The
RTRM is configured through the unit wiring harness
The same module is used on gas/electric, cooling only
with electric heat, and heat pumps The following
additional inputs are connected to the RTRM:
• Outdoor air sensor (OAS)
• Coil temperature sensor (CTS) heat pump only
• Smoke detector (unless it is factory installed) or
other shutdown device
ReliaTel™™ Air Handler Module (RTAM)
The RTAM is the module required for unit with multi-
zone VAV function The RTAM gets power from and
communicates with the RTRM via RS-485 bus Any of
the following options to the ReliaTel™control devices
will require the use of a RTAM
ReliaTel™™ Air Handler Module (RTAM)
(Standard on VAV)
This module contains the VAV setpoint potentiometers
as well as the following inputs and outputs:
• DIP switch inputs for supply air reset, daytime
warm-up enable and IGV/VFD configuration
• Supply pressure transducer input inlet guide vane
(IGV) or variable frequency drive (VFD) output
• Ventilation heat relay (VHR) output
ReliaTel™™ Option Module (RTOM)
NNoottee:: RTOM is standard on 27.5 to 50 Tons units.

RT-SVD03L-EN 11
The RTOM gets power from and communicates with
the RTRM
Any of these optional ReliaTel™devices require the
use of an RTOM:
• Condensate overflow switch (COS)
• Clogged filter switch (CFS)
• Discharge air sensor (DAS) used for supply air
tempering and ICS input data
• Fan failure switch (FFS)
• Factory-installed smoke detector
NNoottee:: A factory-installed smoke detector provides
instant shutdown and ICS alarm output.
• Frostat™(FOS)
ReliaTel™™ Ventilation Module (RTVM) —
27.5 to 50 Tons Units
The RTVM is a module required for units configured
with space pressure control with Statitrac™The
module controls the exhaust damper position 0-10Vdc
output as well as the space pressure sensor calibration
routine The module accepts the following inputs:
• Statitrac™configuration
• Space pressure input
• Space pressure setpoint
• Space pressure setpoint deadband
• Traq™(Voyager™Commercial 27 5 to 50 tons)
ReliaTel™™ Ventilation Module (RTVM) —
3 to 25 Tons Units
The RTVM is a module for Demand Control Ventilation
(DCV) on multi-speed and Single-Zone Variable Air
Volume (SZVAV) units
ReliaTel™™ Dehumidification Module
(RTDM)
NNoottee:: Availa le on 27.5 to 50 Tons units only.
The RTDM is a module required for units configured
with modulating dehumidification The module
controls modulating cooling and reheat valves as well
as the reheat circuit pumpout solenoid The module
accepts the following inputs:
• Reheat circuit entering evaporator temperature
• Reheat circuit low pressure cutout input
Economizer Actuator with Module (ECA
or RTEM)
The economizer can be used with or without the
options module The actuator has a detachable
communicating module, which can be replaced
separately The outdoor air sensor, connected to the
RTRM, provides outdoor temperature information for
the changeover decision
The ECA accepts the following inputs:
• Mixed air sensor (MAS)
• Return air sensor (RAS) for comparative enthalpy or
ICS input data
• Outdoor humidity sensor (OHS) for reference or
comparative enthalpy
• Return air humidity sensor (RHS) for comparative
enthalpy
• CO2sensor 0-10 VDC input (DCV)
• Remote minimum potentiometer (RMP)
• Active/passive DCV configuration input (RTEM only)
• The power exhaust relay is connected to the ECA
module
ReliaTel™™ Electromechanical
Economizer Module (RTEM-EM)
• The RTEM-EM is an economizer module configured
to support electro-mechanical HVAC units The
module will require 24Vac input power and provide
control for an outdoor air damper actuator The
module features 6 pots on for potentiometers
onboard The potentiometers control building
design and demand control ventilation (DCV)
minimum damper positions, DCV and CO2
setpoints and limits, and dry bulb and enthalpy
settings The module supports the following inputs:
• Return air temperature sensor (RAS)
• Outside air temperature sensor (OAS)
• Mixed air temperature sensor (MAS)
• Return air humidity sensor (RHS) for comparative
enthalpy
• Outside air humidity sensor (OHS) for comparative
enthalpy
• CO2sensor 0-12VDC input (DCV)
• Remote minimum position potentiometer
Variable Speed Module (VSM)
• The VSM allows communication between
ReliaTel™controls platform and a variable speed
condenser fan (ECM) motor and variable speed
compressor drive for Precedent™and Voyager™
light commercial products The VSM controller is
applied to the following units:
• Precedent™3 to 5 ton units to control a variable
speed condenser fan and variable speed
compressor drive
• Voyager™light commercial 12 5 and 17 5 ton units
to control a variable speed condenser fan and
variable speed compressor drive
GGeenneerraall IInnffoorrmmaattiioonn

12 RT-SVD03L-EN
COMM3/4 Communication Interface
Allows ICS communication between a ReliaTel™unit
and Trane®ICS systems as follows:
• Tracer®100™series
• Tracer®Summit®
• Tracker®
• ComforTrac™
• VariTrac®1 (Comfort Manager)
• VariTrac®2 (Central Control Panel)
LonTal ®® Communication Interface
General Information
The communication interface board allows ReliaTel™
controls to communicate on a LonTalk®network at the
unit level This product is intended to be installed by a
qualified system integrator properly trained and
experienced in LonTalk®networks Network variables
are based on the LonMark® functional profile template
The LCI-R utilizes a Free Topology transceiver FTT-10A
The FTT-10A transceiver supports non-polarity
sensitive, free topology wiring, allowing the system
installer to utilize star, bus, and loop architecture
Storage
When the LCI-R board must be stored for a period of
time prior to being installed, it must be protected from
the elements The temperature of the storage location
should be between -40°C and 65 6°C (-40°F and 150°F)
and the relative humidity should be 10 to 90 percent,
non-condensing
Mounting and Wiring
The LCI-R board mounts directly in the unit control box
Shipment and Inspection - LCI-R
The LCI-R kit includes the following items:
• 1 - LCI-R communications board
• 1 - Wire harness
• 4 - LCI-R board mounting screws
• 1 - Pop-in wire tie (BAYLTCI002*)
ReliaTel™™ BACnet®® Communication
Interface (BCI-R)
General Information
The building automation and control network
(BACnet®and ANSI/ASHRAE Standard 135-2004)
protocol is a standard that allows building automation
systems or components from different manufacturers
to share information and control functions The
BACnet®communication interface for ReliaTel™
supports Trane®ReliaTel™rooftop units that function
as part of a BACnet®MS/TP communications network
It allows ReliaTel™equipment to communicate with a
building automation system (BAS) by using BACnet®
protocol over an RS-485 MS/TP communications link
The BCI-R module implements all the required
BACnet®capabilities for a BACnet®Application
Specific Controller (B-ASC) This product is intended to
be installed by a qualified system integrator properly
trained and experienced in BACnet®networks The
BCI-R supports three product families that use the
ReliaTel™controls platform: Precedent™, Voyager™,
and Odyssey™
BCI-R Shipment and Inspection
BCI-R kits include the following items:
• 1 - BCI-R communications board
• 1 - Wire harness
• 4 - BCI-R board mounting screws
• 1 - Pop-in wire tie
Storage
When the BCI-R board must be stored for a period of
time prior to being installed, it must be protected from
the elements The temperature of the storage location
should be between -40°C and 65 6°C (-40°F and 150°F)
and the relative humidity should be 10 to 90 percent,
non-condensing
GGeenneerraall IInnffoorrmmaattiioonn

RT-SVD03L-EN 13
Module Flow Diagram
Figure 1. Precedent™™ (TSC/THC) refrigeration module (RTRM) electric heat/no heat
LED or indications
TS/H Refrigeration Module
4 Zone Sensor Inputs (AIP)
4 Outputs
Non Heat Pump Config (BIP)
1 Compressor Config (BIP)
1 Stage Heat Config (BIP)
4 Thermostat inputs (BIP)
3 to 7 wire
Communicating ZSM
Indoor Fan Output (BOP)
MODBUS Communication
Compressor 1 Output (BOP)
Compressor 1 Proving (BIP)
Compressor 1 Disable (BIP)
Emergency Stop (BIP)
Electric Heat 1st Stage
Electric Heat 2nd Stage
Service Test input (BIP)
Outdoor Air Temp (AIP)
LEDs: System TX, RX
24 VAC
Power
Sensor
Resistor
Electric
Heat 2
Electric
Heat 1
CC1
IDF
Unit Control, Select one
Zone Sensor
Mechanical
Thermostat
G Y1 Y2 W1
R C/B
Zone Sensor
Programmable
COMM 3/4
Communication
Interface
Options
Module
Economizer
Module
w/Actuator
TD-5

14 RT-SVD03L-EN
Figure 2. Precedent™™ (YSC/YHC) refrigeration module (RTRM) gas heating
LED or indications
YS/H Refrigeration Module
4 Zone Sensor Inputs (AIP)
4 Outputs
Non Heat Pump Config (BIP)
1 Compressor Config (BIP)
1 Stage Heat Config (BIP)
4 Thermostat inputs (BIP)
3 to 7 wire
Communicating ZSM
Indoor Fan Output (BOP)
MODBUS Communication
Compressor 1 Output (BOP)
Compressor 1 Proving (BIP)
Compressor 1 Disable (BIP)
Emergency Stop (BIP)
Service Test input (BIP)
Outdoor Air Temp (AIP)
LEDs: System TX, RX
24 VAC
Power
Sensor
Resistor
CC1
IDF
Unit Control, Select one
Zone Sensor
Mechanical
Thermostat
G Y1 Y2 W1
R C/B
Zone Sensor
Programmable
COMM 3/4
Communication
Interface
Options
Module
Economizer
Module
w/Actuator
Gas Heat
Module
(IGN)
1200 BPS Comm
TD-5
MMoodduullee FFllooww DDiiaaggrraamm

RT-SVD03L-EN 15
Figure 3. Precedent™™ (WSC) refrigeration module (RTRM) heat pump
LED or indications
WS Refrigeration Module
4 Zone Sensor Inputs (AIP)
4 Outputs
No Electric Heat
Configuration (BIP)
(open when heaters installed)
Outdoor Fan Output
7 Thermostat inputs (BIP)
3 to 7 wire
Communicating ZSM
Switchover Valve Output
MODBUS Communication
Compressor 1 Output (BOP)
Compressor 1 Proving (BIP)
Coil Sensor Temp (AIP)
Electric Heat 2nd Stage
Compr 1 Disable (BIP)
Service Test input (BIP)
Outdoor Air Temp (AIP)
LEDs: System TX, RX
24 VAC
Power
Sensor
Resistor
Electric
Heat 2
Electric
Heat 1
CC1
SOV
Unit Control, Select one
Zone Sensor
Mechanical
Thermostat
G Y1 Y2 O
W2 X2 T
R C/B
Zone Sensor
Programmable
COMM 3/4
Communication
Interface
Options
Module
Economizer
Module
w/Actuator
IDF
ODF
Sensor
Indoor Fan Output
1 Stage Electric Heat
Configuration (BIP)
(open when 2 Stage
heaters installed)
Emergency Stop (BIP)
Outdoor Air Temp (AIP)
TD-5
MMoodduullee FFllooww DDiiaaggrraamm

16 RT-SVD03L-EN
Figure 4. Options module (RTOM)
Options Module
Modbus Communication
Economizer
Actuator
Module
Refrigeration
Module
24 VAC
Supply Air Tempering Config (BIP)
Frostat Input (BIP)
Clogged Filter Input (BIP)
Fan Failure Switch (BIP)
Smoke Detector/Hi Temp Input (BIP)
Discharge
Air Sensor
24 VAC
Discharge Air Temperature (AIP)
Exhaust Fan Setpoint (AIP)
24 VAC Exhaust (BIP)
Purge (BIP)
Pressurize (BIP)
Dehumid SP
Humidistat (BIP) Dehum/Reheat
(3 to 50 Tons)
Voyager Commercial Configuration
Condenser Fan Cycling
27.5 to 50 Tons
Modulating Gas Heat Configuration
Discharge Air Heat Setpoint
Heat Pump Low Ambient Limit Config.
Alarm Indication Config.
Reheat Enable
Supply Air Reheat Setpoint
Condensate Overflow Switch
Relative
Humidity
Sensor
Discharge Air Heating Upper
Limit (SZVAV)
Discharge Air Cooling Lower
Limit (SZVAV)
MMoodduullee FFllooww DDiiaaggrraamm

RT-SVD03L-EN 17
Figure 5. Honeywell economizer module (ECA)
Refrigeration
Module
24 VAC
Honeywell Economizer
Module
Power Exhaust
ModBus Communication
24 VAC
PWR
EXH
relay
D
B
A
CEnthalpy/Temperature
Setpoint Pot.
0-50% Minimum
Position Pot.
C02 Setpoint Adjustment
(500-1500 ppm)
Mixed Air Temp (AIP)
10K 25C Neg Coeff
Return Air Relative Humidity
(AIP) 4-20 mA Pos Coeff
Return Air Temp (AIP)
10K 25C Neg Coeff
Outdoor Air Relative Humidity
(AIP) 4-20 mA Pos Coeff
IAQ Sensor (C02) (AIP)
0-10 VDC
Remote Minimum Position
Pot. (AIP) 0-270 Ohm
MA Sensor
RH Sensor
RA Sensor
RH Sensor
Potentiometer
C02Sensor
Status LED
E
NNoottee:: Not availa le to order (o solete).
MMoodduullee FFllooww DDiiaaggrraamm

18 RT-SVD03L-EN
Figure 6. Economizer module (RTEM)
Refrigeration
Module
24 VAC
ReliaTel Economizer Module
Power Exhaust
ModBus Communication
24 VAC
PWR
EXH
relay
D
B
A
CEnthalpy/Temperature
Setpoint Pot.
DCV Setpoint LL
300-1900 ppm
(RTRM v8.0 & later)
DCV Setpoint UL
500-1500 ppm
(pre-RTRM v8.0)
1000-2000 ppm
(RTRM v8.0 & later)
Mixed Air Temp (AIP)
10K 25C Neg Coeff
Return Air Relative Humidity
(AIP) 4-20 mA Pos Coeff
Return Air Temp (AIP)
10K 25C Neg Coeff
Outdoor Air Relative Humidity
(AIP) 4-20 mA Pos Coeff
IAQ Sensor (C02) (AIP)
0-10 VDC
Remote Minimum Position Pot.
(AIP) 0-270 Ohm
MA Sensor
RH Sensor
RA Sensor
RH Sensor
Potentiometer
C02Sensor
Status LED
E
DCV Mode
24 VAC
DCV Min Pos 0-40/50%
Design Min Pos 0-10/50%
MMoodduullee FFllooww DDiiaaggrraamm

RT-SVD03L-EN 19
Figure 7. COMM 3/4 module for ICS communication/ LonTal ®® Communication Interface (LCI/TCI), BACnet™™ (BCI)
Refrigeration
Module COMM 3/4 Module/LCI Options
Module
or
RTAM (VAV)
Modbus Communication
Must be configured for
COMM3 or COMM4
depending on input
device.
LCI is self-configured.
Address (BIP)
COMM3/4 only
Building
Automation
System (BAS)
COMM3
COMM4
LonTalk®
BACnet™
Receive LED
Transmit LED
24 VAC
MMoodduullee FFllooww DDiiaaggrraamm

20 RT-SVD03L-EN
Figure 8. Air control module (RTAM)
TCI/LCI/BCI
or
Refrigeration
Module
Options
Module
DIP Switch
Duct Static Pressure Transducer
IGV
or
VFD
VAV Box Relay
Remote Static
Pressure Setpoint
Remote Static
Pressure Deadband
Remote Reset
Setpoint
Remote Reset
Amount
Remote Morning
Warmup setpoint
Remote Supply
Air Cooling
Setpoint
Static Pressure
Setpoint
Static Pressure
Deadband
Reset
Setpoint
Reset
Amount
Morning
Warmup
Setpoint
Supply
Air Cooling
Setpoint
RTAM Module
Supply Air
Heating
Setpoint
Changeover
Input
MMoodduullee FFllooww DDiiaaggrraamm