Trane BCHE Installation and operating instructions

SAFETY WARNING
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.
June 2022 BCX-SVX002A-EN
Installation, Operation, and Maintenance
Blower Coil Air Handler
Single Zone Air Handler, 400 to 4000 CFM
Models BCHE, BCVE and later design sequence

©2022 Trane BCX-SVX002A-EN
Introduction
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.
CAUTION
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.
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury.
All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements
for field wiring installation and grounding as
described in NEC and your local/state/national
electrical codes.
WARNING
Personal Protective Equipment (PPE)
Required!
Failure to wear proper PPE for the job being
undertaken could result in death or serious injury.
Technicians, in order to protect themselves from
potential electrical, mechanical, and chemical
hazards, MUST follow precautions in this manual and
on the tags, stickers, and labels, as well as the
instructions below:
• Before installing/servicing this unit, technicians
MUST put on all PPE required for the work being
undertaken (Examples; cut resistant gloves/
sleeves, butyl gloves, safety glasses, hard hat/
bump cap, fall protection, electrical PPE and arc
flash clothing). ALWAYS refer to appropriate
Safety Data Sheets (SDS) and OSHA guidelines
for proper PPE.
• When working with or around hazardous
chemicals, ALWAYS refer to the appropriate
SDS and OSHA/GHS (Global Harmonized
System of Classification and Labelling of
Chemicals) guidelines for information on
allowable personal exposure levels, proper
respiratory protection and handling
instructions.
• If there is a risk of energized electrical contact,
arc, or flash, technicians MUST put on all PPE in
accordance with OSHA, NFPA 70E, or other
country-specific requirements for arc flash
protection, PRIOR to servicing the unit. NEVER
PERFORM ANY SWITCHING, DISCONNECTING,
OR VOLTAGE TESTING WITHOUT PROPER
ELECTRICAL PPE AND ARC FLASH CLOTHING.
ENSURE ELECTRICAL METERS AND
EQUIPMENT ARE PROPERLY RATED FOR
INTENDED VOLTAGE.

BCX-SVX002A-EN 3
WARNING
Follow EHS Policies!
Failure to follow instructions below could result in
death or serious injury.
• All Trane personnel must follow the company’s
Environmental, Health and Safety (EHS) policies
when performing work such as hot work,
electrical, fall protection, lockout/tagout,
refrigerant handling, etc. Where local
regulations are more stringent than these
policies, those regulations supersede these
policies.
• Non-Trane personnel should always follow local
regulations.
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.
Trademarks
All trademarks referenced in this document are the
trademarks of their respective owners.
Introduction

4BCX-SVX002A-EN
Model Number Description . . . . . . . . . . . . . . . . . . . 8
General Information . . . . . . . . . . . . . . . . . . . . . . . . 10
Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Receiving and Handling . . . . . . . . . . . . . . . . . . . 13
Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Packaging/Shipping . . . . . . . . . . . . . . . . . . . 13
Identification . . . . . . . . . . . . . . . . . . . . . . . . . 13
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Receiving Checklist . . . . . . . . . . . . . . . . . . . 13
Jobsite Storage . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Outdoor Storage . . . . . . . . . . . . . . . . . . . . . . 13
Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Dimensions and Weights. . . . . . . . . . . . . . . . . . . . 15
Service Clearances . . . . . . . . . . . . . . . . . . . . . . . 15
Horizontal Blower Coil . . . . . . . . . . . . . . . . . . . . . 20
Vertical Blower Coil . . . . . . . . . . . . . . . . . . . . . . . 22
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Angle Filter and Mixing Box. . . . . . . . . . . . . 25
Bottom/Top Access Filter Box . . . . . . . . . . . 26
Return and Discharge Attenuators. . . . . . . 27
Electric Heat . . . . . . . . . . . . . . . . . . . . . . . . . 30
Coil Connections . . . . . . . . . . . . . . . . . . . . . . . . . 36
Sample Piping Schematics. . . . . . . . . . . . . . . . . 37
Valve and Actuator Operation (All
valves except for 7.4 Cv and 10.0
Cv).................................. 40
Installation Mechanical. . . . . . . . . . . . . . . . . . . . . . 42
Lifting and Rigging . . . . . . . . . . . . . . . . . . . . . . . . 42
General Lifting Considerations . . . . . . . . . . 42
Installation Procedure . . . . . . . . . . . . . . . . . . . . . 42
Horizontal Unit (Model BCHE)
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Vertical Unit (Model BCVE)
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Accessory Installation — Mix Box,
Angle Filter, Bottom Access Filter, and
Attenuators . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Condensate Drain Connections. . . . . . . . . . . . . 52
Piping and Connections. . . . . . . . . . . . . . . . . . . . . 53
General Recommendations . . . . . . . . . . . . . . . . 53
Grommet Installation . . . . . . . . . . . . . . . . . . 53
Drain Pan Trapping (Models BCHE/
BCVE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Water Coil Piping . . . . . . . . . . . . . . . . . . . . . . . . . 55
Refrigerant Coil Piping . . . . . . . . . . . . . . . . . . . . 55
Liquid Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Line Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Components . . . . . . . . . . . . . . . . . . . . . . . . . 56
Suction Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Expansion Valves. . . . . . . . . . . . . . . . . . . . . . . . . 58
Remodel, Retrofit, or Replacement. . . . . . . . . . 58
Field-Installed Evaporator Piping. . . . . . . . . . . . 59
Installation - Controls . . . . . . . . . . . . . . . . . . . . . . . 61
Control Options . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Customer Supplied Terminal Interface
(CSTI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
CSTI Adapter Board Configuration . . . . . . 61
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Tracer®UC400-B Controller . . . . . . . . . . . . . . . 65
Communication Wire
Specifications . . . . . . . . . . . . . . . . . . . . . . . . 65
General Wiring Guidelines . . . . . . . . . . . . . 65
Setting the Address . . . . . . . . . . . . . . . . . . . 65
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . 67
Air-Fi®Wireless Communications
Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Air-Fi®Wireless Communications
Interface (WCI) . . . . . . . . . . . . . . . . . . . . . . . 69
Wireless Zone Sensor (WZS) Set . . . . . . . 69
Automatic Network Formation . . . . . . . . . . 69
Specifications . . . . . . . . . . . . . . . . . . . . . . . . 70
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Wireless Protocol . . . . . . . . . . . . . . . . . . . . . 70
Zone Sensor Options. . . . . . . . . . . . . . . . . . . . . . 71
Zone Sensor Installation . . . . . . . . . . . . . . . . . . . 71
Location Considerations . . . . . . . . . . . . . . . 71
Location Considerations for Wireless
Zone Sensors . . . . . . . . . . . . . . . . . . . . . . . . 72
Table of Contents

BCX-SVX002A-EN 5
Height Requirements . . . . . . . . . . . . . . . . . . 72
Mounting Surfaces . . . . . . . . . . . . . . . . . . . . 72
Zone Sensor Dimensions . . . . . . . . . . . . . . 72
Wired Zone Sensor. . . . . . . . . . . . . . . . . . . . 72
Wireless Zone Sensors . . . . . . . . . . . . . . . . 73
Receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Zone Sensor Settings . . . . . . . . . . . . . . . . . . . . . 73
Address Setting. . . . . . . . . . . . . . . . . . . . . . . 73
Observing Receiver for Readiness . . . . . . 74
Associating Sensor to Receiver . . . . . . . . . 75
Testing Signal Strength and
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Sensor Operations. . . . . . . . . . . . . . . . . . . . . . . . 76
Temporary Occupancy (Timed
Override) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
End-of-Range Temperature
Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Receiver Power-up Sequence . . . . . . . . . . 76
Transmission Variables . . . . . . . . . . . . . . . . 77
Wireless Sensor Specifications . . . . . . . . . . . . . 77
Agency Compliance . . . . . . . . . . . . . . . . . . . 78
Wireless Display Sensor (WDS) . . . . . . . . . . . . 78
Configuration Procedure . . . . . . . . . . . . . . . 78
Displaying Setpoint or
Temperature . . . . . . . . . . . . . . . . . . . . . . . . . 79
Locking or Unlocking Settings. . . . . . . . . . . 79
WDS Operating Mode . . . . . . . . . . . . . . . . . 80
Changing Room Temperature. . . . . . . . . . . 80
Changing Heating/Cooling
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Changing Fan Settings . . . . . . . . . . . . . . . . 81
Requesting Temporary
Occupancy. . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Lock Symbol . . . . . . . . . . . . . . . . . . . . . . . . . 81
Testing Signal Strength . . . . . . . . . . . . . . . . 81
Testing Battery Status . . . . . . . . . . . . . . . . . 81
Installation — Electrical . . . . . . . . . . . . . . . . . . . . . 82
Unit Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . 82
Supply Power Wiring . . . . . . . . . . . . . . . . . . . . . . 82
Electrical Grounding Restrictions . . . . . . . . . . . 82
Interconnection Wiring . . . . . . . . . . . . . . . . . . . . 82
MCA and MOP Calculations. . . . . . . . . . . . . . . . 83
Non-Electric Heat Units . . . . . . . . . . . . . . . . 83
Electric Heat Units . . . . . . . . . . . . . . . . . . . . 83
Useful Formulas . . . . . . . . . . . . . . . . . . . . . . 83
ECM Overview and Setup. . . . . . . . . . . . . . . . . . . 86
Trane Electronically Commutated Motor
(ECM). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
VelociTach™ Motor Control Board . . . . . . . . . . 86
Status Display . . . . . . . . . . . . . . . . . . . . . . . . 87
Installation and Initial Setup . . . . . . . . . . . . . . . . 87
Safety Requirements . . . . . . . . . . . . . . . . . . 88
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
VelociTach Motor Control Board . . . . . . . . . 88
User Interface . . . . . . . . . . . . . . . . . . . . . . . . 89
Configuration Examples. . . . . . . . . . . . . . . . 91
Priority/Error Display . . . . . . . . . . . . . . . . . . 91
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Adjusting Variable Speed Inputs. . . . . . . . . 92
Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Motor Control Board Settings . . . . . . . . . . . 96
Fan Speed Response
Verification . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Start-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Pre-Startup Checklist . . . . . . . . . . . . . . . . . . . . 101
General Checklist . . . . . . . . . . . . . . . . . . . . 101
Fan-Related Checks. . . . . . . . . . . . . . . . . . 101
Coil-Related Checks. . . . . . . . . . . . . . . . . . 101
Electrical Checks . . . . . . . . . . . . . . . . . . . . 101
Ductwork Checks . . . . . . . . . . . . . . . . . . . . 101
Unit Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Thermostat. . . . . . . . . . . . . . . . . . . . . . . . . . 102
Tracer® UC400-B Controller. . . . . . . . . . . 104
Analog Sensors. . . . . . . . . . . . . . . . . . . . . . 104
Zone Sensor . . . . . . . . . . . . . . . . . . . . . . . . 104
UC400-B Stand-Alone Operation . . . . . . . . . . 106
UC400-B Operation . . . . . . . . . . . . . . . . . . . . . . 106
Sequence of Operation . . . . . . . . . . . . . . . . . . . 106
Power-Up Sequence . . . . . . . . . . . . . . . . . 106
Random Start . . . . . . . . . . . . . . . . . . . . . . . 107
Occupancy Modes . . . . . . . . . . . . . . . . . . . 107
Timed Override Control . . . . . . . . . . . . . . . . . . 107
Zone Temperature Control . . . . . . . . . . . . . . . . 108
Discharge Air Tempering. . . . . . . . . . . . . . . . . . 108
Heating or Cooling Mode . . . . . . . . . . . . . . . . . 108
Table of Contents

6BCX-SVX002A-EN
Water Temperature Sampling
Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Fan Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Manual Fan Speed Control . . . . . . . . . . . . 109
AUTO Fan Operation; 1-, 2-, 3-speed
Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
AUTO Fan Operation; ECM Energy
Efficient Mode . . . . . . . . . . . . . . . . . . . . . . . 109
AUTO Fan Operation; ECM Acoustical
Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
AUTO Fan Operation; ECM Acoustical
Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Exhaust Control . . . . . . . . . . . . . . . . . . . . . . . . . 110
Valve Operation . . . . . . . . . . . . . . . . . . . . . . . . . 110
Three-Wire Modulating Valve
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Three-Wire Modulating Valve
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Two-position Valve Operation . . . . . . . . . . 110
Modulating Outdoor/Return Air
Damper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Economizing (Free Cooling) . . . . . . . . . . . 111
Electric Heat Operation . . . . . . . . . . . . . . . . . . . 111
Dehumidification Operation . . . . . . . . . . . . . . . 112
Peer-to-Peer Communication . . . . . . . . . . . . . 112
Unit Protection Strategies. . . . . . . . . . . . . . . . . 112
Smart Reset. . . . . . . . . . . . . . . . . . . . . . . . . 112
Low Coil Temperature Protection . . . . . . . 112
Condensate Overflow. . . . . . . . . . . . . . . . . 112
Fan Status . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Fan Off Delay . . . . . . . . . . . . . . . . . . . . . . . 112
Filter Maintenance Timer. . . . . . . . . . . . . . 112
Freeze Avoidance . . . . . . . . . . . . . . . . . . . 113
Freeze Protection (Discharge Air
Temperature Low Limit) . . . . . . . . . . . . . . . 113
Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . 114
Maintenance Checklist . . . . . . . . . . . . . . . . . . . 114
Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Inspecting and Cleaning Fans . . . . . . . . . 115
Fan Motors. . . . . . . . . . . . . . . . . . . . . . . . . . 115
Torque Rating . . . . . . . . . . . . . . . . . . . . . . . 115
Coils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Water Coils . . . . . . . . . . . . . . . . . . . . . . . . . 119
Refrigerant Coils . . . . . . . . . . . . . . . . . . . . . 120
Coil Winterization . . . . . . . . . . . . . . . . . . . . 120
Moisture Purge Cycle. . . . . . . . . . . . . . . . . 120
Cleaning Non-Porous Surfaces . . . . . . . . 121
Cleaning Porous Surfaces. . . . . . . . . . . . . 121
Drain Pans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Diagnostics and Troubleshooting . . . . . . . . . . . 123
Wireless Zone Sensors (WZS) . . . . . . . . . . . . 124
Receiver Diagnostics . . . . . . . . . . . . . . . . . 125
Sensor Diagnostics. . . . . . . . . . . . . . . . . . . 126
Testing Signal Strength . . . . . . . . . . . . . . . 126
Testing Battery Status . . . . . . . . . . . . . . . . 127
24 V Power Status Indicator . . . . . . . . . . . 128
Check Signal Strength on a Site. . . . . . . . 128
Replacing Sensor Batteries. . . . . . . . . . . . 128
Manual Association . . . . . . . . . . . . . . . . . . 129
Disassociation . . . . . . . . . . . . . . . . . . . . . . . 129
Sensor/Receiver Compatibility . . . . . . . . 129
Replacing a Failed Sensor or
Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Servicing and Testing WZS . . . . . . . . . . . . . . . 129
Servicing and Testing Tools. . . . . . . . . . . . 130
Procedure for Testing Zone
Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Procedure for Testing Receiver . . . . . . . . 130
Forcing a Sensor to Transmit . . . . . . . . . . 130
Output Power Level . . . . . . . . . . . . . . . . . . 130
Failure and Default Modes . . . . . . . . . . . . 130
Measuring Output Resistance . . . . . . . . . 131
Cleaning the Sensor. . . . . . . . . . . . . . . . . . 131
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Tracer® UC400-B Controller . . . . . . . . . . . . . . 132
LED Activity . . . . . . . . . . . . . . . . . . . . . . . . . 132
Overriding Outputs . . . . . . . . . . . . . . . . . . . 133
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . 133
Fans with UC400-B Controller . . . . . . . . . 135
Valves with UC400-B Controller . . . . . . . . 136
DX Coils or Electric Heat with UC400-B
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Outdoor Air Dampers with UC400-B
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
ECM Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
General Information . . . . . . . . . . . . . . . . . . 138
Troubleshooting Tips . . . . . . . . . . . . . . . . . 138
Table of Contents

BCX-SVX002A-EN 7
Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Replacing ECM Components . . . . . . . . . . 140
Circuit Module Replacement. . . . . . . . . . . 141
Application Notes . . . . . . . . . . . . . . . . . . . . 142
Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Layout and Control Box Diagrams . . . . . . . . . . 145
Table of Contents

8BCX-SVX002A-EN
Model Number Description
Following is a complete description of the blower
coil model number. Each digit in the model number
has a corresponding code that identifies specific unit
options.
Digit 1, 2, 3, 4 — Unit Model
BCHE = Horizontal blower coil
BCVE = Vertical blower coil
Digit 5, 6, 7 — Unit Size
012 = Unit size 12 - 1 Ton
018 = Unit size 18 - 1.5 Ton
024 = Unit size 24 - 2 Ton
036 = Unit size 36 - 3 Ton
048 = Unit size 48 - 4 Ton
054 = Unit size 54 - 4.5 Ton
060 = Unit size 60 - 5 Ton
072 = Unit size 72 - 6 Ton
090 = Unit size 90 - 7.5 Ton
120 =Unit size 120 - 10 Ton
Digit 8 — Unit Voltage
A= 115V/60 Hz/1 pH
B= 208V/60 Hz/1 pH
C= 230V/60 Hz/1 pH
D= 277V/60 Hz/1 pH
E= 208V/60 Hz/3 pH
F= 230V/60 Hz/3 pH
G= 460V/60 Hz/3 pH
J= 220V/50 Hz/1 pH
K= 240V/50 Hz/1 pH
L= 380V/50 Hz/3 pH
M= 415V/50 Hz/3 pH
N= 575V/60 Hz/3 pH
Digit 9 — Insulation
1= Matte faced insulation 1-in.
2= Double wall insulation 1-in.
Digit 10, 11 — Design Sequence
A0 = Design Sequence
Digit 12 — Motor/Control Box Location or
Inlet Location
A= Same side as coil connections
B= Front return
C= Bottom return
Digit 13 — Coil Connection Side
0= None
1= PVC drain pan right hand coil
2= PVC drain pan left hand coil
3= SST drain pan right hand coil
4= SST drain pan left hand coil
5= PVC drain pan front connection
6= SST drain pan front connection
Digit 14 — Coil #1 First Coil in Air Stream
0= None
A= 1-row hydronic preheat
B= 4-row hydronic
C= 6-row hydronic
D= 4-row hydronic with auto change over
E= 6-row hydronic with auto change over
F= 2-row high capacity hydronic pre-heat
G= 3-row DX 3/16-in.
H= 4-row DX 3/16-in.
J= 6-row DX 3/16-in.
K= 4-row DX 3/16-in. (0.049) Dist, Heat Pump
L= 6-row DX 3/16-in. (0.049) Dist, heat pump
M= 8-row hydronic
N= 8-row hydronic with auto change over
Digit 15 — Coil #2 Second Coil in Air
Stream
0= None
A= 1-row hydronic reheat
B= 4-row hydronic
C= 6-row hydronic
F= 2-row high cap hydronic reheat
G= 3-row DX 3/16-in.
H= 4-row DX 3/16-in.
J= 6-row DX 3/16-in.
K= 4-row DX 3/16-in. Dist, Heat Pump
L= 6-row DX 3/16-in. Dist, heat pump
Digit 16 — Motor Horsepower
2= 0.5 HP ( 0.4 HP 3PH 50 HZ)
4= 1 HP ( 0.8 HP 3PH 50 HZ)
5= 1.5 HP ( 1.25 HP 3PH 50 HZ)
7= 3 HP ( 2.5 HP 3PH 50 HZ)
8= 2.3 HP
9= 3.5 HP
A= 5 HP (4.5 HP 3PH 50 HZ)
Digit 17 — Motor Speed
0= Factory Set
Digit 18 — Electric Heat Stages
0= None
1= 1-stage
2= 2-stage
3= SCR
Digit 19, 20, 21 — Electric Heat kW
000 = None
010 = 1.0 kW
050 = 5.0 kW
100 = 10.0 kW
150 = 15.0 kW
200 = 20.0 kW
240 = 24.0 kW
300 = 30.0 kW
Digit 22 — Electric Heat Controls
0= Factory Set
Digit 23 — Electric Heat Options
0= None
A= Interlocking disconnect switch
B= Interlock disc and heater fuse
Digit 24 — Filters
0= None
A= 1-in. Throwaway
B= 2-in. MERV 8 pleated throwaway
C= 2-in. MERV 13 pleated throwaway
Digit 25 — Accessory Section
0= None
A= Mixing box only
B= Angle filter box
C= Angle filter/Mix box
D= Bottom (or Top) access filter mod
E= Discharge attenuator
F= Discharge attenuator and mixing box
G= Discharge attenuator and angle filter box
H= Discharge attenuator and angle filter/mixing
box
J= Discharge attenuator and Bottom (or Top)
access filter mod
K= Return attenuator
L= Return attenuator with angle filter box
M= Discharge attenuator with Bottom (or Top)
access filter mod
N= Return attenuator and Discharge attenuator
P= Return attenuator and Discharge attenuator
and Bottom (or Top) access filter mod
Q= Return attenuator and Discharge attenuator
and angle filter box
R= Bottom (or Top) access filter mod and mixing
box
Digit 26 — Control Type
A= CSTI fan status
B= CSTI
C= UC 400-B
D= UC 400-B and WCI
G= Thermostat
Digit 27 — Coil #1 Control Valve Type
0= None
A= 2-way, 2 position N.C.
B= 2-way, 2 position N.O.
C= 3-way, 2 position N.C.
D= 3-way, 2 position N.O.
E= 2-way, modulating
F= 3-way, modulating
G= Field supplied, 2 position N.C.
H= Field supplied, 2 position N.O.
J= Field supplied, modulating
K= Field supplied, analog (2-10 Vdc)

BCX-SVX002A-EN 9
Digit 28 — Coil #1 Control Valve Cv
0= None
A= 2-way 2.3 Cv 3/4-in. valve
B= 2-way 3.3 Cv 3/4-in. valve
C= 2-way 4.6 Cv 3/4-in. valve
D= 2-way and 3-way 7.4 Cv 1-in. valve
E= 2-way and 3-way 10.0 Cv 1-in. valve
F= 3-way 1.0 Cv 1/2-in. valve
G= 3-Way 2.7 Cv 1/2-in. valve
H= 3-Way 4.6 Cv 3/4-in. valve
J= 2-way PIC 0.9 GPM
K= 2-way PIC 2 GPM
L= 2-way PIC 4.3 GPM
M= 2-way PIC 9 GPM
Digit 29 — Coil #1 Piping Package
0= Factory set
Digit 30 — Coil #2 Control Valve
0= None
A= 2-way, 2 position N.C.
B= 2-way, 2 position N.O.
C= 3-way, 2 position N.C.
D= 3-way, 2 position N.O.
E= 2-way, modulating
F= 3-way, modulating
G= Field supplied, 2 position N.C.
H= Field supplied, 2 position N.O.
J= Field supplied, modulating
K= Field supplied, analog (2-10 VDC)
Digit 31 — Coil #2 Control Valve Cv
0= None
A= 2-way 2.3 Cv 3/4-in. valve
B= 2-way 3.3 Cv 3/4-in. valve
C= 2-way 4.6 Cv 3/4-in. valve
D= 2-way and 3-way 7.4 Cv 1-in.
E= 2-way and 3-way 10.0 Cv 1-in. valve
F= 3-way 1.0 Cv 1/2-in.valve
G= 3-way 2.7 Cv 1/2-in. valve
H= 3-way 4.6 Cv 3/4-in. valve
J= 2-way PIC 0.9 GPM
K= 2-way PIC 2 GPM
L= 2-way PIC 4.3 GPM
M= 2-way PIC 9 GPM
Digit 32 — Coil #2 Piping Package
0= Future offering
Digit 33 — Remote Heat Options
0= Future offering
Digit 34 — Mixing Box Damper Actuator
0= None
2= Modulating, N.C.
2= Modulating, N.O.
Digit 35 — Factory Mounted Control
Options
0= None
A= Condensate overflow
B= Condensate Overflow and Low Limit
Digit 36 — Control Options 2
0= None
A= Outside air sensor, field mounted
B= Discharge air sensor
C= Outside air and discharge air sensor
Digit 37 — Control Options 3
0= None
A= Dehumidification with local sensor
B= CO2sensor
C= Air-Fi®Dehumidification and CO2
D= Air-Fi®Dehumidification
E= Air-Fi®CO2
Digit 38 — Zone Sensors
0= None
A= Wall-mounted temperature sensor (OCC/
UNOCC, COMM)
B= Wall-mounted
C= Wall-mounted temperature sensor (SP,
OALMH, OCC/UNOCC, COMM)
D= Wall-mounted display sensor (SP, OALHH,
COMM)
E= Wireless display sensor, Unit-mounted
receiver (SP, OALMH)
F = Wall-mounted FSS
Digit 39 — Seismic Certification
0= None
A= IBC seismic certification
B= OSHPD seismic certification
Digit 40 — Extra filter
0= None
1= Extra 1-in. throwaway ship loose
2= Extra 2-in. MERV 8 pleated throwaway ship
loose
3= Extra 2-in. MERV 13 pleated throwaway ship
loose
4= Extra 2-in. MERV 8 and MERV 13 pleated
throwaway ship loose
Model Number Description

10 BCX-SVX002A-EN
General Information
Blower coil units are draw-thru air handlers for cooling load
conditions of 400–4000 cfm. Units are available in
horizontal (model BCHE) and vertical (model BCVE)
configurations. Horizontal units are typically ceiling
suspended via threaded rods.
Lugs are provided on all four corners to secure the rods.
Horizontal units can also be floor mounted. Vertical units
are typically floor mounted. They have a side inlet for easy
duct connection, and do not require a field fabricated inlet
plenum. Vertical units ship in either one piece (size 24-60)
or two pieces (size 72-120). Horizontal and Vertical
Accessory sections ship separate from the main unit.
Basic unit components consist of a coil, condensate drain
pan, filter, duct collars, one fan wheel, and an electronically
commutated motor (ECM).
Four-row, six-row or eight-row main coils are available for
either hydronic cooling or heating. Three, four, or six-row
direct expansion (DX) coils are also available for cooling.
An optional one-row or two-row heating coil is available
factory-installed in either the preheat or reheat position.
All units have a bolt on flat filter frame for one or two two-
inch filters. An optional angle filter box (two inch only),
mixing box, bottom filter access box, or combination angle
filter mixing box is available. In addition, all units are
available with valve kit. The valve kit consists of a control
valve (Pressure Independent Control (PIC) valve available
as an option), a circuit setter, and a strainer.
Direct-drive motors range from 1/2 to 5 horsepower in a
wide range of voltages. All motors have internal current
overload protection, permanently sealed ball bearings, and
rubber grommets on the mounting brackets to reduce noise
and vibration transmission.
Motors come factory programmed for specific job
requirements or can be programmed based on
standardized motor speeds. Field adjustment of motor
speeds can be adjusted through the VelociTach™ motor
control board. This enables the unit to be easily balanced
for changes to design static pressures. Refer to the original
sales order and the motor control board label on the unit for
the programmed motor speed. Several factory installed and
tested control options are available.
Figure 1. Horizontal blower coil (BCHE model)
EC Motor
Double wall
casing option
MERV 13 filter option (LEED®)
Filter fit and assembly
Removable sloped
drain pan
Increased static
pressure capability
Non-corrosive
drain pan
Coil mounting

BCX-SVX002A-EN 11
Figure 2. Vertical blower coil BCVE size 24-60
1/2 - 1 HP ECM
motor (standard)
Direct-drive up to
2.5 inches total static
eliminates the difficulties
with belts
Control box options
include UC400-B controller
for single zone VAV; CSTI
Main coil with copper
tubes and enhances
aluminum fins in 4-
or 6-row hydronic
or 3-, 4-, and 6-row DX
Throwaway MERV 8
or MERV 13 filters
Internal filter frame
accommodates 1-inch
or 2-inch filters
Main drain connection
on same side of unit
Auxillary heating coil
with 1- or 2-row
hydronic
General Information

12 BCX-SVX002A-EN
Figure 3. Vertical blower coil BCVE size 72-120
General Information

BCX-SVX002A-EN 13
Pre-Installation
Receiving and Handling
Inspection
Upon delivery, thoroughly inspect all components for any
shipping damage that may have occurred, and confirm that
the shipment is complete.
Note: Delivery cannot be refused. All units are shipped F.O.
B. factory. Trane is not responsible for shipping
damage.
Packaging/Shipping
Blower coil units ship assembled on skids with protective
coverings over the coil and discharge openings.
Field-installed sensors ship separately inside the unit’s
main control panel. Valve kits and accessories are
packaged separately and ship separate from the unit. The
valve kits are shrink wrapped to a board and packaged in a
box.
Identification
Each unit includes a nameplate identifying the section type
and functional components, customer tagging information,
unit serial number, unit order number, the build-section
position for installation, and the unit model number. The
valve kits are individually labeled with customer tagging
and order numbers.
Handling
The unit ships on skids that provide forklift locations from
the front or rear. The skid allows easy maneuverability of
the unit during storage and transportation. Trane
recommends leaving units and accessories in their
shipping packages/skids for protection and handling ease
until installation. Remove the skids using a forklift or jack
before placing the unit in its permanent location.
Receiving Checklist
Complete the following checklist immediately after
receiving shipment to detect possible shipping damage.
☐Check to ensure that the shipment is complete. Small
components may ship inside the unit or ship separately.
Check the parts list to ensure all materials are present.
If any component is missing, contact your local Trane
sales office.
☐Check all units, components, connections, and piping.
Check fan wheel for free rotation by spinning manually.
Check all doors, latches and hinges. Inspect interior of
each unit or section. Inspect coils for damage to fin
surface and coil connections. Check for rattles, bent
corners, or other visible indications of shipping
damage. Tighten loose connections.
☐If a unit is damaged, make specific notations using
pictures and/or video concerning the damage on the
freight bill. Do not refuse delivery.
☐Notify the carrier’s terminal of the damage immediately
by phone and mail. Request an immediate joint
inspection of the damage by the carrier and consignee.
☐Notify your Trane sales representative of the damage
and arrange for repair. Do not attempt to repair the unit
without consulting the Trane representative.
☐Inspect the unit for concealed damage as soon as
possible after delivery. Report concealed damage to
the freight line. It is the receiver’s responsibility to
provide reasonable evidence that concealed damage
did not occur after delivery. Take photos of damaged
material if possible.
Note: Concealed damage must be reported within 15 days
of receipt.
Jobsite Storage
This unit is intended for indoor use only. It is the sole
responsibility of the customer to provide the necessary
protection to prevent vandalism and weather protection of
the equipment. Under no circumstance should the unit be
left unprotected from the elements.
NOTICE
Microbial Growth!
Failure to follow instructions below could result in
odors and damage to the equipment and building
materials.
The floor or foundation must be level and the
condensate drain at the proper height for proper
drainage and condensate flow. Standing water and
wet surfaces inside the equipment can become an
amplification site for microbial growth (mold). If there
is evidence of microbial growth on the interior
insulation, it should be removed and replaced prior to
operating the system.
Outdoor Storage
Outdoor storage is not recommended. However, when
indoor storage is not possible, Trane makes the following
recommendations to prevent damage:
Note: Keep the equipment on the original wooden blocks/
skid for protection and ease of handling.
• Select a well-drained area, preferably a concrete pad or
blacktop surface.
• Place the unit on a dry surface or raised off the ground
to assure adequate air circulation beneath the unit and
to assure no portion of the unit will contact standing
water at any time.
• Cover the unit securely with a canvas tarp.

14 BCX-SVX002A-EN
NOTICE
Unit Corrosion Damage!
Plastic tarps can cause condensation to form in
and on the equipment, which could result in
corrosion damage or wet storge stains.
Use only canvas tarps to cover air handlers.
• Do not stack units.
• Do not pile other material on the unit.
Site Preparation
• Ensure the installation site can support the total weight
of the unit. Refer to the unit submittals for actual
weights.
• Allow sufficient space for adequate free air and
necessary service access. Refer to submittals for
specific minimums.
• Allow room for supply and return piping, ductwork,
electrical connections, and coil removal. Support all
piping and ductwork independently of the unit to
prevent excess noise and vibration.
• Ensure there is adequate height for coil piping and
condensate drain requirements.
• Consider coil piping and condensate drain
requirements. Verify condensate line is continuously
pitched one inch per 10 feet of condensate line run to
adequately drain condensate.
• Confirm the floor or foundation is level. For proper unit
operation, the unit must be level (zero tolerance) in
both horizontal axis.
NOTICE
Microbial Growth!
Failure to follow instructions below could result in
odors and damage to the equipment and building
materials.
The floor or foundation must be level and the
condensate drain at the proper height for proper
drainage and condensate flow. Standing water and
wet surfaces inside the equipment can become an
amplification site for microbial growth (mold). If
there is evidence of microbial growth on the
interior insulation, it should be removed and
replaced prior to operating the system.
• If the unit is to be ceiling mounted, the installer/
contractor must provide threaded suspension rods. All
units must be installed level.
• BCHE and BCVE units have either right or left hand
piping. Reference piping locations by facing the front of
the unit (airflow discharges from the front). The control
panel is always on the end on the same side as the
piping. Size 24-60 BCVE units have piping on the front
of the unit.
• The fan wheel and main drain pan are easily removable
for cleaning.
Pre-Installation

BCX-SVX002A-EN 15
Dimensions and Weights
Service Clearances
Figure 4. Recommended service clearance

16 BCX-SVX002A-EN
Figure 5. Recommended service clearance for blower coil with electric heat
Table 1. Service requirements (inches)
Unit Size Dimension A Filter Section Dimension B Coil Section
12 24 26
18 30 30
24 30 30
36 30 42
54 30 48
72 30 60
90 30 50
120 30 60
Dimensions and Weights

BCX-SVX002A-EN 17
Figure 6. Recommended service clearance for BCVE 72 to 120 with electric heat (top view)
Dimensions and Weights

18 BCX-SVX002A-EN
Figure 7. Recommended service clearances for BCVE 72 to 120 (side view)
Dimensions and Weights

BCX-SVX002A-EN 19
Figure 8. Service clearance for BCVE size 24 to 60
Control box Airflow
Electric heat
controls
Fan motor
Fan
4 ft.
Piping package
Filter
Airflow
Airflow
Drain pan
2 ft.
Dimensions and Weights

20 BCX-SVX002A-EN
Horizontal Blower Coil
Figure 9. BCHE horizontal blower coil
Dimensions and Weights