Trane BAS-SVX44A-EN User Manual

Installation and Operation

Trane™ Touch-screen Programmable Thermostat

Trane Part Number:
Clarksville Part Number:
Service Part Number:

X13511538-01
BAYSTAT152A
THT02775

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.

July 2011 BAS-SVX44A-EN

Copyright

© 2011 Trane. All rights reserved.

This document and the information in it are the property of Trane and may not be used
or reproducedin whole or in part, without the written permission of Trane. 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

Trane and its logo are trademarks of Trane in the United States and other countries. All
trademarks referenced in this document are the trademarks of their respective owners.

Warnings, Cautions, and Notices

Warnings, cautions, and notices are provided in appropriate places throughout this
document:

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.

2 BAS-SVX44A-EN

Table of Contents

Overview .............................................................. 5

Packaged Contents and Tools ............................................ 5

Packaged Contents ................................................. 5

Tools .............................................................5

Specifications and Dimensions .......................................... 6

Product Features and Functions .......................................... 7

Features .......................................................... 7

Functions .........................................................7

Pre-Installation ......................................................... 8

Location Considerations ............................................8

Height Requirements ............................................... 8

Mounting Surfaces ................................................. 8

Maximum Wire Length ............................................. 9

Installation and Wiring .................................................10

Mounting the Thermostat and Cover Removal ........................ 10

Wiring and Wiring Diagrams ....................................... 12

Thermostat Cover Replacement .....................................18

Mounting the Backplate ....................................... 10

Wiring ...................................................... 12

Terminal Identification ........................................13

Wiring Diagrams .............................................13

Power, System Tests, and Software Reset ............................... 19

Applying Power ................................................... 19

Power-up Test .................................................... 19

System Tests ..................................................... 20

Software Reset ................................................... 22

Configuration Option Setup ............................................ 23

Installation Options ............................................... 24

Operation .............................................................27

Thermostat Icon Descriptions .......................................27

Functions .............................................................28

Time Setup ...................................................... 28

Dehumidify Setup ................................................ 28

System Mode Setup .............................................. 29

Fan Mode ....................................................... 29

BAS-SVX44A-EN 3

Temporary Override (TOV) Setup ...................................30

General Notes: ............................................... 30

Schedule Setup ................................................... 31

Schedule Display Mode .......................................31

Day/Period/Time Schedule Change Mode ........................ 32

Setpoint/Fan Schedule Change Mode ........................... 33

General Notes for All Schedule Modes ........................... 34

Other Thermostat Functions ............................................ 36

Heat/Cool Indicator Display ......................................... 36

Non-programmable Mode ......................................... 37

Filter Change ..................................................... 38

Clean Screen ..................................................... 38

Local/Remote/Outdoor Temperature Display and Control ..............39

Local/Remote Humidity Display and Control .......................... 40

System Lockout ................................................... 41

To lock the thermostat: ........................................ 41

To unlock the thermostat: ...................................... 41

Temperature Cycle Control ............................................. 42

Other Functional Components .......................................... 44

Sleep Mode ...................................................... 44

Changeover Operation ............................................. 44

Changeover Valve Control ......................................... 44

Extension of Fan-on Time .......................................... 45

Economizer/Time of Day (TOD) .....................................45

Configuration, Time, and Programming Retention ..................... 45

Heat/Cool Relay Confirmation ...................................... 45

Deadband ........................................................ 45

Temperature Display Offset ........................................ 46

Humidity Display Offset ............................................ 46

LCD Backlight .................................................... 46

Compressor Protection ............................................ 46

Permanent Memory Data .......................................... 46

Compressor and Auxiliary Heat Lockout ............................. 47

Error Codes and Exceptions ............................................ 48

Error Codes ......................................................48

Exceptions ....................................................... 49

Troubleshooting ....................................................... 50

4 BAS-SVX44A-EN

Overview

The Trane™ Touch-screen Programmable Thermostat is for use with conventional Rooftop Units
(RTU) air conditioners and heat pumps. These units are compact, easy to install, configure, and
operate.

This installation and operation manual provides information about the following:

• Specifications and dimensions

• Product features and functions

• Pre-installation requirements

• Installation and wiring

• Power, system tests, and software reset

• Configuration option setup

• Other thermostat functions

• Temperature cycle control

• Other functional components

• Error codes and exceptions

• Troubleshooting

Note: Before beginning installation, visually inspect all parts for obvious defects for damage. All

components are thoroughly inspected before leaving the factory. Any claims for damage
incurred in shipping should be filed immediately with the carrier.

Packaged Contents and Tools

Packaged Contents

Each programmable thermostat ships with the following:

• One (1) Trane Touch-screen Programmable Thermostat

• One (1) Installation/Configuration Instructions (X39641190-01)

• One (1) Setup/Programming Instructions (X39641189-01)

• One (1) bag of:

- Two (2) machine screws

- Two (2) wood screws

- One (1) security screw

- Two (2) wall anchors

- Two (2) terminal blocks; an 8-pin and a 6-pin

Tools

• One (1) 1/8 inch, flat-bladed service screwdriver

• One (1) small Phillips screwdriver

• Level

• Drill

• Hammer

• Wire cutter/stripper

BAS-SVX44A-EN 5

Specifications and Dimensions

Specifications and Dimensions

The following table and illustration provides the thermostat specifications and dimensions.

Table 1. Specifications and dimensions

Storage

Temperature: –4°F to 158°F (–20°C to 70°C)

Relative Humidity: Between 5% and 95% (noncondensing)

Operating

Temperature: 32°F to 122°F (0°C to 50°C)

Humidity: Between 5% and 95% (noncondensing)

Input Power:

Power Consumption: <2 Watts @24 Vac RMS nominal

Wire Size: 18 to 22 AWG

Output Terminal Rating: 1A @ 30 Vac

Temperature Accuracy: ±1.4°F (0.8°C) from 50°F to 90°F (10°C to 32.2°C)

Temperature Resolution: Configurable @1°F, 0.5°F, 1°C, 0.5C, 0.1°C

Humidity Accuracy: ±3% RH from 20% to 80% RH

Humidity Resolution: 1%

Housing Material:

Mounting: 3.24 in (8.26 cm) for two mounting screws (supplied)

Dimensions

24 Vac (minimum 18 Vac/maximum 32 Vac), 50Hz to 60Hz

Note: Frequency is selected using Configuration Option #0190.

• Polycarbonate/ABS Blend

• UV protected

• U.L. 94-5VA flammability rating

4.65 in

(118 mm)

5.90 in

(150 mm)

1.30 in

(33 mm)

0.3 in

(8 mm)

6 BAS-SVX44A-EN

Product Features and Functions

The following is a list of features and functions of the programmable thermostat.

Features

Liquid Crystal Display (LCD) Touch Screen: with symbols for temperature, setpoints, and system
operating modes. In addition, the thermostat has settings for the day of the week, time of day, and
occupancy.

• System Modes:

- Heat

- Cool

- Auto

- Off

- Emergency heat

• Fan Modes:

- On

- Auto

• System Configurations:

- 1 heat/1 cool conventional

- 1 heat/1 cool heat pump

- 1 heat conventional (with and without fan)

- 1 cool conventional

- 2 heat/1 cool heat pump

- 2 heat/2 cool conventional

- 2 heat/1 cool conventional

- 1 heat/2 cool conventional

- 2 heat/2 cool heat pump

- 3 heat/2 cool heat pump

• Time and Dehumidify Settings

• Temporary Override (TOV)

• Scheduling:

- All days: (Mo, Tu, We, Th, Fr, Sa, Su)

- Five (5) days, plus one day, plus one day: (Mo, Tu, We, Th, Fr), (Sa),(Su)

- Five (5) days, plus two days,: (Mo, Tu, We, Th, Fr,) (Sa, Su)

- Seven (7) individual days [default]: (Mo) (Tu) (We) (Th) (Fr) (Sa) (Su)

• Temperature Cycling Control (Patent Pending):

- Integrated adjustable deadband staging

- Configurable cycles per hour (CPH) heat/cool cycles

Functions

The touch-screen programmable thermostat provides additional functions that provide more
flexibility and control. Refer to the sections, “Other Thermostat Functions,” p. 36 and “Other

Functional Components,” p. 44.

BAS-SVX44A-EN 7

Pre-Installation

Pre-Installation

This section provides the following pre-installation information:

• Location considerations

• Height requirements

• Mounting surfaces

• Maximum wire length

Location Considerations

When selecting a location, avoid the following areas when installing the thermostat:

• Direct sunlight

• Direct airstream of air diffusers

• Exterior walls and other walls that have a temperature differential between the two sides

• Close proximity to heat sources such as sunlight, appliances, concealed pipes, chimneys, or
other heat-generating equipment

• Drafty regions

• Dead spots behind doors, projection screens, or corners

• Walls subject to high vibration

• High humidity regions

• High traffic areas (to reduce accidental damage or tampering)

Height Requirements

It is recommended to mount the thermostat a maximum distance of 54 inches (137 cm) above the
floor. If a parallel approach by a person in a wheelchair is required, reduce the maximum height
to 48 inches.

Note: For further details regarding wheelchair requirements, refer to ADA Standards for

Accessible Design/4.27 Controls and Operating Mechanisms/4.27.3 Height online at

www.ADA.gov and to local building codes.

Mounting Surfaces

The thermostat can be mounted to any sturdy, vertical surface. Plastic-threaded anchors and M3.5
x 20 mm screws are provided for mounting to plaster or wallboard; 6-32 x 3/4 inch machine screws
are provided for mounting directly to a standard electrical device box. For other surface types, the
user must provide fasteners that are appropriate for the surface.

8 BAS-SVX44A-EN

Maximum Wire Length

The thermostat may not function properly if the total resistance of any of the thermostat wires
exceeds 2.5 ohms (refer to Table 2).

Important: Ensure

lengths shown in Table 2 . Best

Table 2. Maximum wire lengths

Maximum Recommended Wire

Copper Wire size

18 AWG (0.75 mm2) 385 ft (117 m) 2,500 ft (762 m) 385 ft (117 m)

2

20 AWG (0.50 mm

22 AWG (0.33 mm

(a) Temperature and humidity readings can be adjusted in the configuration setup for longer wire runs.

) 240 ft (73 m) 1,500 ft (457 m) 240 ft (73 m)

2

) 150 ft (46 m) 1,000 ft (305 m) 150 ft (46 m)

Length From Thermostat to HVAC
Equipment

that the wires from the thermostat to the HVAC equipment do not exceed

practice: use shorter wire lengths.

Remote
Temperature Sensor
to Thermostat

(a)

(Max

)

Remote Humidity Sensor to
Thermostat (Max

Pre-Installation

(a)

)

BAS-SVX44A-EN 9

Installation and Wiring

This section provides information about the following:

• Mounting the thermostat and cover removal

• Wiring and wiring diagrams

• Thermostat cover replacement

Mounting the Thermostat and Cover Removal

Before beginning installation, it is recommended to re-read the section, “Pre-Installation,” p. 8 and
then ensure that the following conditions are met:

• A wire access hole is available at the thermostat location

• The wires are accessible through the hole

• The wires are attached to the appropriate terminals on the HVAC equipment

• There is continuity (and not more than 2.5 ohms resistance) between the thermostat location
and the HVAC equipment

• The wires are accurately labeled or color coded

Mounting the Backplate

WARNING

Hazardous voltage!

Disconnect all electric power, including remote disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power cannot be inadvertently energized. Failure to
disconnect power before servicing could result in death or serious injury.

NOTICE

Equipment damage!

Applying excessive voltage to the thermostat can permanently damage it.

To mount the backplate:

1. Shut off the power to all HVAC equipment. If the security screw was previously installed,
remove it (refer to

Figure 1, p. 11).

10 BAS-SVX44A-EN

Installation and Wiring

Figure 1. Security screw removal and cover release

Cover thumb tab

NOTE: If the
security screw is
installed, remove
it before
attempting to

Security Screw

2. Push the cover thumb tab to release the cover from the backplate as shown above.

3. Route the wires through the opening in the backplate as shown below. Wires should be marked

ensure proper connection to terminals.

to

remove the cover.

Figure 2. Wire routing, mounting, and mounting dimensions

Dimension

H 3.3 in. (85 mm)

W 5.9 in. (150 mm)

D 1.3 in. (33 mm)

M 3.3 in. (85 mm)

H

Programmable

Touch-screen

W

D

M

Two (2) slots for standard #8-32 (M4),
2”x4” junction box mounting screws.

4. If mounting the backplate directly to a wall surface, hold the backplate against the surface and
then

level and mark the fastener locations.

5. Secure the backplate using appropriate fasteners (refer to the section, “Mounting Surfaces,”

p. 8.) The thermostat must be level and plumb to ensure proper air movement through the

thermostat enclosure.

BAS-SVX44A-EN 11

Installation and Wiring

Wiring and Wiring Diagrams

Wiring

WARNING

Hazardous voltage!

Disconnect all electric power, including remote disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power cannot be inadvertently energized. Failure to
disconnect power before servicing could result in death or serious injury.

NOTICE

Equipment damage!

Applying excessive voltage to the thermostat can permanently damage it.

Note: Terminal

blocks are included with the mounting hardware contained in a small plastic bag

(new installation) or remove terminal blocks from pin header (existing installation).

To wire the thermostat:

1. Connect the wires to the terminal block(s) by:

a. Removing approximately 1/4 inch (6 mm) of insulation from the wires.

b. Using the terminal block screws to securely fasten each wire into the terminal block.

Note: Refer

to Table 3, p. 13 and the wiring diagrams on page 14- through 18 to

determine the correct terminal for each wire.

In some cases the terminal labels (such as Y, G, or R) correctly correspond to the
first

letter of the color wire in which they are connected. However, it is important to
verify which equipment terminals are connected at the other ends of the wires
before connecting the wires to the thermostat.

2. Align the pins/label on the circuit board with the holes/label on the terminal blocks and gently
push

the wired terminal blocks into place on the circuit board (refer to Figure 3).

Figure 3. Attaching the wired terminal blocks to the pins on the circuit boards

C G Y W Rc R

W2 Y2 A S1 S2 Hp Hs Dh

R

Rc

(O/B)W

Y

G

C

Dh

Hs

Hp

S2

S1

A

Y2

(W1)W2

3. Push the excess wire through the hole in the wall cavity or into the junction box.

Important: Do not coil excess wire between the thermostat and the backplate. Use non-

flammable insulation to prevent air movement between the wall cavity and the
thermostat.

12 BAS-SVX44A-EN

Terminal Identification

Table 3 identifies the programmable thermostat terminals.

Table 3. Terminal identification

Installation and Wiring

Wiring Diagrams

Connector

Type

8-pin Connectors

6-pin connectors

(a) Label order above is how they appear on the thermostat terminal block.
(b) Text in parentheses applies to only heat pump systems.

Terminal

(a)

Label

Dh Dehumidify relay

Hs External humidity sensor input

Hp External humidity sensor power

S2 External temperature sensor

S1 External temperature sensor

A Economizer relay

Y2 Stage 2 compressor control relay

(W1)W2 (Aux or Em heat relay)

R

Rc

(O/B)W (Changeover valve)

Y Stage 1 compressor control relay

G Fan relay

C Common

Terminal Description

(b)

24 Vac heating

Important: Terminal shipped with jumper connected. Remove jumper if the 24 Vac

24 Vac cooling

Important: Terminal shipped with jumper connected. Remove jumper if the 24 Vac

power supplies are separate.

power supplies are separate.

(b)

Heat relay

Second stage heat relay

The following diagrams show typical wiring scenarios for the touch-screen programmable
thermostat.

Use Table 4 and the corresponding figure to correctly wire the thermostat.

Table 4. System type options for programmable thermostats

System Type Value for Option 130

1-heat/1-cool, conventional 1 Figure 4

1-heat/1-cool, heat pump without auxiliary heat 2 Figure 5

1-heat only, conventional without fan 3 Figure 6

1-heat only, conventional with fan 4 Figure 7

1-cool, conventional 5 Figure 8

2-heat/1-cool, heat pump with auxiliary heat 6 Figure 9

2-heat/2-cool, conventional 7 Figure 10

2-heat/1-cool, conventional 8 Figure 11

1-heat/2-cool, conventional 9 Figure 12

2-heat/2-cool, heat pump without auxiliary heat 10 Figure 13

3-heat/2-cool, heat pump with auxiliary heat 11 Figure 14

BAS-SVX44A-EN 13

See Diagram

Installation and Wiring

Figure 4. Programmable Thermostat, 1H/1C, Conventional (Option 1)

(jumper
installed)

(jumper
removed)

Dh

Hs

Hp

S2

S1

A

Y2

W2

R

Rc

W

Y

G

C

Dh

Hs

Hp

S2

S1

A

Y2

W2

R

Rc

W

Y

G

C

Remote Humidity Sensor

Remote Temperature Sensor

Compressor

Remote Humidity Sensor

Remote Temperature Sensor

Compressor

Dehumidification

Economizer/TOD

Heat

Fan

Dehumidification

Economizer/TOD

Heat

Fan

Single Transformer:

24 Vac

Two Transformers:

Heating Transformer

24 Vac

Cooling Transformer

24 Vac

L1 (hot)

L2

L1 (hot)

L2

L1 (hot)

L2

Figure 5. Programmable Thermostat, 1H/1C, Heat Pump Without Auxiliary Heat (Option 2)

Dehumidification

Economizer/TOD

Changeover Valve

Fan

24 Vac

L1 (hot)

L2

(jumper
installed)

O/B

Dh

Hs

Hp

S2

S1

A

Y2

W1

R

Rc

Y

G

C

Remote Humidity Sensor

Remote Temperature Sensor

Compressor

14 BAS-SVX44A-EN

Installation and Wiring

Figure 6. Programmable Thermostat, 1H Only, Conventional Without Fan (Option 3)

(jumper
installed)

Dh

Hs

Hp

S2

S1

A

Y2

W2

R

Rc

W

Y

G

C

Remote Humidity Sensor

Remote Temperature Sensor

Dehumidification

Economizer/TOD

Heat

24 Vac

L1 (hot)

L2

Figure 7. Programmable Thermostat, 1H, Conventional With Fan (Option 4)

(jumper
installed)

Dh

Hs

Hp

S2

S1

A

Y2

W2

R

Rc

W

Y

G

C

Remote Humidity Sensor

Remote Temperature Sensor

Dehumidification

Economizer/TOD

Heat

Fan

24 Vac

L1 (hot)

L2

Figure 8. Programmable Thermostat, 1C, Conventional (Option 5)

(jumper
installed)

Dh

Hs

Hp

S2

S1

A

Y2

W2

R

Rc

W

Y

G

C

Remote Humidity Sensor

Remote Temperature Sensor

Compressor

Dehumidification

Economizer/TOD

24 Vac

Fan

L1 (hot)

L2

BAS-SVX44A-EN 15

Installation and Wiring

Figure 9. Programmable Thermostat, 2H/1C, Heat Pump With Auxiliary Heat (Option 6)

Dehumidification

Economizer/TOD

Changeover Valve

Fan

24 Vac

(jumper
installed)

O/B

Dh

Hs

Hp

S2

S1

A

Y2

W1

R

Rc

Y

G

C

Remote Humidity Sensor

Remote Temperature Sensor

Auxiliary Heat

Compressor

Figure 10. Programmable Thermostat, 2H/2C, Conventional (Option 7)

(jumper
installed)

Dh

Hs

Hp

S2

S1

A

Y2

W2

R

Rc

W

Y

G

C

Remote Humidity Sensor

Remote Temperature Sensor

Compressor 2

Compressor 1

Dehumidification

Economizer/TOD

Heat 2

Heat 1

Fan

Single Transformer:

24 Vac

L1 (hot)

L1 (hot)

L2

L2

(jumper
removed)

Dh

Hs

Hp

S2

S1

A

Y2

W2

R

Rc

W

Y

G

C

Remote Humidity Sensor

Remote Temperature Sensor

Compressor 2

Compressor 1

Dehumidification

Economizer/TOD

Heat 2

Heat 1

Fan

Two Transformers:

Heating Transformer

24 Vac

Cooling Transformer

24 Vac

L1 (hot)
L2

L1 (hot)
L2

16 BAS-SVX44A-EN