Trane X13511542010 User manual

Trane Communicating Thermostats
for Heat Pump Control
BACnet MS/TP version X13511542010
User Guide
August 2020 BAS-SVU10C-EN
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.

©2020 Trane BAS-SVU10C-EN
Introduction
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.
CAUTIONsIndicates 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 electrical codes.
Failure to follow code could result in death or serious injury.

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 Labeling 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.
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.
Introduction
BAS-SVU10C-EN 3
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.
Revision History
Miscellaneous edits.

Table of Contents
4BAS-SVU10C-EN
Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Features Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Heat Pump Model Specific Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Before Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Thermostat Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Installation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Screw Terminal Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Detailed Wiring Diagram Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
User Menu Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Status Display Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Sequence of Auto-Scroll Status Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
User Programming Instructions Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
The User Menu Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Detailed Description of Menu Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Temporary Setpoint Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Installer Configuration Parameter Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Troubleshooting Guide (All Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Drawings and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

BAS-SVU10C-EN 5
Product Overview
The Trane Communicating Heat Pump Thermostat is specifically designed for control of self-
contained heating/cooling heat pump units. The product features an intuitive, menu-driven, back-
lit LCD display, which walks users through the programming steps, making the process extremely
simple. Accurate temperature control is achieved due to the product’s PI time proportional control
algorithm, which virtually eliminates temperature offset associated with traditional, differential-
based thermostats.
Two digital inputs can be set by the installer to monitor filter status, activate a remote temporary
occupancy switch, and/or used as a general purpose service indicator.
Three remote sensor inputs are provided: Remote room or return air temperature, outdoor air
temperature, and supply air temperature for monitoring purposes.
An SPST auxiliary switch output that operates with the occupancy can be used to control lighting
or disable the economizer minimum fresh air function.
The thermostats are also compatible with the occupancy sensor cover accessories. Thermostats
equipped with an occupancy sensor cover provide advanced active occupancy logic, which will
automatically switch occupancy levels from Occupied to Unoccupied as required by local activity
being present or not. This advanced occupancy functionality provides advantageous energy
savings during occupied hours without sacrificing occupant comfort.
Features and Benefits
Features Benefits
Advanced occupancy functions Through the network or smart local occupancy sensing
Ready for occupancy sensor accessory
cover Fully integrated advanced occupancy functionality with a
occupancy sensor accessory cover
Two extra digital inputs Adds functionality
Smart fan operation Saves energy during night mode
Unique configuration key with password
protection Minimizes parameter tampering
Lockable keypad Tamper proof, no need for thermostat guards
Remote room and outdoor temperature
sensor Increase flexibility and functionality
Auxiliary output Can be used for lighting and/or economizer override
Discharge air sensor input Can be used to monitor unit efficiency
Theory of Operation
The Trane Communicating Thermostat uses a proprietary adaptive logic algorithm to control the
space temperature. This algorithm controls the heating / air conditioning system to minimize
overshoot while still providing comfort. It provides exceptional accuracy due to its unique PI time
proportioning control algorithm, which virtually eliminates temperature offset associated with
traditional, differential-based on/off thermostats.

Figure 1. On/off mechanical control vs pi electronic control
6BAS-SVU10C-EN
Product Overview
Features Overview
The Trane Communicating Thermostat includes the following features:
• Remote outdoor sensing capability for added flexibility
– System mode lock out
– Heat pump balance point settings
• Remote discharge air sensor input for monitoring purpose
– System efficiency feedback
• Lockable keypads for tamper proofing (No need for thermostat guards)
• Automatic frost protection to prevent costly freeze damage
• Anti short cycle and minimum on/off run time protection. Reduces wear and maximizes life
span of mechanical equipment
• Two programmable digital inputs for added flexibility. Each input can be programmed as the
following:
–None: No function will be associated with the input.
–Service: A backlit flashing Service alarm will be displayed on the thermostat LCD screen
when the input is energized. It can be tied in to the AC unit control card, which provides an
alarm in case of malfunction.
–Filter: A backlit flashing Filter alarm will be displayed on the thermostat LCD screen when
the input is energized. It can be tied to a differential pressure switch that monitor filters.
–Rem NSB: Remote NSB timer clock input. Will disable the internal scheduling of the
thermostat. The scheduling will now be set as per the digital input. The menu part related
to scheduling is disabled and no longer accessible. It provides low cost setback operation
via occupancy sensor or from a dry contact.
–RemOVR: Temporary occupancy contact. Disables all override menu function of the
thermostat. The override function is now controlled by a manual remote momentarily
closed contact. When configured in this mode, the input operates in a toggle mode.
With this function enabled it is now possible to toggle between unoccupied and occupied
setpoints for the amount of time set by parameter (TOccTime) temporary occupancy time.

BAS-SVU10C-EN 7
Product Overview
–Fan lock: Used in conjunction with a local air flow sensor connected to the input. Locks out
the thermostat heating and cooling action and displays a local alarm if no air flow is detected
10 seconds after the fan (G terminal) is energized.
• Programmable smart fan operation saves energy during night mode
• Non volatile EEPROM memory prevents loss of parameters during power shortage
• Built in default profile set-up for easier start up and commissioning
• Configurable SPST output relay on programmable models for lighting, exhaust fan or fresh air
control
Heat Pump Model Specific Features
The Trane Communicating Thermostat includes the following features:
• Selectable single or dual stage compressor stages
• High balance point:
Locks out auxiliary heating when outside air temperature is above this value
•Low balance point:
Locks out heat pump compressor operation when outside air temperature is below this value
• Comfort/economy mode:
In economy mode, heat pump use is maximized before turning on auxiliary heating
• Compressor/auxiliary interlock:
Adds flexibility by locking out heat pump operation during auxiliary heating to prevent high
pressure trip when the coil is downstream of the auxiliary heat source

8BAS-SVU10C-EN
Installation
This section explains preliminary installation tasks, location considerations, and the installation
procedure.
Before Installation
Complete the following steps:
1. Remove the security screw on the bottom of Terminal Equipment Controller cover.
2. Open unit by pulling on the bottom side of Terminal Equipment Controller (see the below
figure).
3. Remove wiring terminals from sticker.
Figure 2. Opening unit
Thermostat Location
Install the thermostat
• On an inside wall only.
• Away from any direct heat source.
• Away from any air discharge grill.
• Away from direct sun radiation.
Nothing should restrict vertical air circulation to the Terminal Equipment Controller.
Installation Procedure
1. Swing open the Terminal Equipment Controller PCB to the left by pressing the PCB locking tabs
(Figure 3, p. 9).
2. Pull out cables 6 inch out from the wall.
3. Wall surface must be flat and clean.
4. Insert cable in the central hole of the base.

BAS-SVU10C-EN 9
Installation
5. Align the base and mark the location of the two mounting holes on the wall. Install proper side
of base up.
6. Install anchors in the wall.
7. Insert screws in mounting holes on each side of the base (see the figure below).
Figure 3. Location of PCB retaining tabs
8. Gently swing back the circuit board on the base and push on it until the tabs lock it.
9. Strip each wire 1/4 inch from end.
10. Insert each wire according to wiring diagram.
11. Gently push excess wiring back into hole (see the figure below).
12. Re-install wiring terminals in their correct locations (see the figure below).
13. Re-install the cover (top side first) and gently push extra wire length back into the hole in the
wall.
14. Install security screw.
Figure 4. Reinstall terminal blocks

CAUTION
Take adequate precautions during installation!
If replacing an existing Communicating RTU Thermostat, label the wires before removal of the
thermostat.
Electronic controls are static sensitive devices. Discharge yourself properly before
manipulating and installing the controller.
A short circuit or wrong wiring may permanently damage the Terminal Equipment Controller
or the equipment.
CAUTION
Use proper safety measures to protect system!
All Communicating RTU thermostats are for use as operating controls only and are not safety
devices. These instruments have undergone rigorous tests and verifications prior to shipment to
ensure proper and reliable operation in the field. Whenever a control failure could lead to
personal injury and/or loss of property, it becomes the responsibility of the user / installer /
electrical system designer to incorporate safety devices (such as relays, flow switch, thermal
protections, etc.) and/or an alarm system to protect the entire system against such catastrophic
failures. Tampering with the devices or misapplication of the device will void warranty.
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Installation