Trane XT302C User Manual

XT302C Deluxe Programmable

5 FEET

[1.5 METERS]

YES

M17106

Heat-Cool Thermostat

18-HD25D7-5

INSTALLER'S GUIDE

APPLICATION

The XT302C Deluxe Programmable Heat-Cool Thermostat provides electrnic control of 24 Vac single-zone multistage systems. Refer to Table 1 for a general description of the thermostat. This thermostat requires a common wire to supply power.

Table 1. Description of XT302C.

Model System Changeover System Selection Fan Selection Comments

XT302C Multistage Automatic Heat-Off-Cool-Auto On-Auto System and fan selections are done by

keyboard.

RECYCLING NOTICE

If this thermostat is replacing a thermostat that contains mercury in a sealed tube, do not place your old thermostat in the trash.

Contact your local waste management authority for instructions regarding recycling and the proper disposal of the old thermostat.

INSTALLATION

When Installing this Thermostat...

1. Read these instructions carefully. Failure to follow the

instructions can damage the product or cause a hazardous condition.

2. Check the ratings given in the instructions and on the product to make sure the product is suitable for your application.

3. Installer must be a trained, experienced service technician.

4. After completing installation, use these instructions to check out the product operation.

Location

Install the thermostat about 5 ft (1.5m) above the floor in an area with good air circulation at average temperature. See Fig. 1. Avoid installing the thermostat where it can be affected by the following:

• Drafts, or dead spots behind doors and in corners.

• Hot or cold air from ducts.

• Radiant heat from sun or appliances.

• Concealed pipes and chimneys.

• Unheated (uncooled) areas such as an outside wall behind the thermostat.

Wallplate Installation

Position wallplate horizontally on the wall or on a 2 in. x 4 in. wiring box.

1. Position and level the wallplate for appearance only (the thermostat will function properly even when not level).

Fig. 1. Typical location of thermostat.

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XT302C DELUXE PROGRAMMABLE HEAT-COOL THERMOSTAT

THERMOSTAT

WALL

B RW2

Y1 Y2 G

OT OT

WIRES THROUGH WALL

WALL ANCHORS (2)

MOUNTING HOLES

MOUNTING SCREWS

M15044

Fig. 2. Mounting the wallplate.

2. Use a pencil to mark the mounting holes. See Fig. 2.

3. Remove the wallplate from the wall and drill two 3/16

inch holes in the wall (if drywall) as marked. For firmer material such as plaster, drill two 7/32 inch holes. Gently tap anchors (provided) into the drilled holes until flush with the wall.

4. Position the wallplate over the holes, pulling wires through the wiring opening.

5. Loosely insert the mounting screws into the holes.

6. Tighten mounting screws.

BLUE

YELLOW

COMPRESSOR CONTACTOR 2

COMPRESSOR CONTACTOR 1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

BROWN

WHITE

HEAT STAGE 1

BLACK

HEAT STAGE 2

GREEN

FAN

RED

HUMIDISTAT OPENS ON RISE TAYSTAT253A

OUTDOOR TEMPERATURE SENSOR TAYSENS100A

TRANSFORMER

Fig. 3. Typical hookup of XT302C in a heat cool system.

FOR STRAIGHT

FOR WRAPAROUND INSERTION STRIP 7/16 IN. (11 MM).

INSERTION STRIP 5/16 IN. (8 MM).

M4826

Fig. 4. Proper wiring technique.

Mounting Thermostat

1. Engage tabs at the top of the thermostat and wallplate.

See Fig. 5.

2. Press lower edge of case to close and latch.

NOTE: To remove thermostat from wall, first pull out at

bottom of thermostat; remove top last.

L1 (HOT)

M17116

WIRING

All wiring must comply with local electrical codes and ordinances. Refer to Fig. 3 for typical hookup diagram. A letter code is located near each terminal for identification.

WARNING

Electronic Shock or Equipment Damage Hazard. Can shock individuals or cause equipment damage.

Disconnect power before wiring to prevent electrical shock or equipment damage.

1. Loosen the terminal screws on the wallplate and connect the system wires. See Fig. 4.

NOTE: Use 18 gauge, color-coded thermostat cable

for proper wiring.

2. Securely tighten each terminal screw.

3. Push excess wire back into the hole.

4. Plug the hole with nonflammable insulation to

prevent drafts from affecting the thermostat.

Pub. No. 18-HD25D7-5

69-1213—1 (T8624)

ENGAGE TABS AT TOP OF THERMOSTAT AND WALLPLATE.

PRESS LOWER

EDGE OF CASE TO LATCH.

M17151

Fig. 5. Mounting thermostat on wallplate.

XT302C DELUXE PROGRAMMABLE HEAT-COOL THERMOSTAT

SET WAKE TIMES AND SETPOINTS

INCREASE TIME SETTING OR SCROLL FORWARD THROUGH INSTALLER SETUP AND SYSTEM TEST

SET CURRENT DAY AND TIME

RETURN TO NORMAL OPERATIONS

SET CURRENT OR PROGRAM DAY

ENTER INDEFINITE OR TIMED HOLD MODE

DECREASE TIME SETTING OR SCROLL BACKWARD THROUGH INSTALLER SETUP AND SYSTEM TEST

CHANGE BETWEEN DAYLIGHT SAVINGS AND STANDARD TIME

Run

Program

Hold Temp

COPY ONE PROGRAMMED DAY TO ANOTHER DAY

INCREASE TEMPERATURE SETTING OR SCROLL FORWARD THROUGH INSTALLER SETUP OPTIONS

Set Current

Day/Time

Day

Daylight

Time

Copy

Fig. 6. XT302C key locations and descriptions.

Using Thermostat Keys

The thermostat keys are used to:

• Set current day and time,

• Program times and setpoints for heating and cooling,

• Temporarily override program temperatures,

• Display present setting,

• Configure Installer Setup,

• Check Self-Test,

• Display outdoor temperature (optional accessory),

• Set the system operation, and

• Set the fan operation. See Fig. 6 for keypad explanation.

SETTINGS

System and Fan Settings

The system default setting is Heat and the fan default setting is Auto. Use the System and Fan keys to change the settings. See Figs. 7 and 8. The fan settings can be set for each program period individually. The system selection is for all the program periods.

DECREASE TEMPERATURE SETTING OR SCROLL BACKWARD THROUGH INSTALLER SETUP OPTIONS

DISPLAY INFORMATION SUCH AS PRESENT SETTINGS AND OUTDOOR TEMPERATURE

SET RETURN TIMES AND SETPOINTS

Leave

Wake

Heat/Cool

Settings

CHANGE BETWEEN HEATING AND COOLING SETPOINTS

Set Program

Return Sleep

SystemFilter Fan

SELECT FILTER EXPIRATION IN NUMBER OF DAYS

SET SLEEP TIMES AND SETPOINTS

SET LEAVE TIMES AND SETPOINTS

SELECT FAN OPERATION

SELECT SYSTEM OPERATION (HEAT, COOL, OFF, AUTO)

M17118

System settings control the thermostat operation as follows:

Heat: The thermostat controls the heating. Off: Both the heating and cooling are off. Cool: The thermostat controls the cooling. Auto: The thermostat automatically changes between

heating and cooling operation, depending on the indoor temperature.

Set Current

Run

Day/Time

Program

Hold Temp

Leave

Wake

Return Sleep

Set Program

Time

Heat/Cool

Day

Daylight

Time

SystemFilter Fan

Settings

Copy

System

Heat

Auto

Off

Cool

Fig.7. System key location and display.

Fan settings control the system fan as follows:

On: Fan operates continuously. Auto: Fan operates with equipment.

Set Current

Run

Day/Time

Program

Hold Temp

Leave

Wake

Return Sleep

Set Program

Time

Heat/Cool

Day

Daylight

Time

SystemFilter Fan

Settings

Copy

Fan

Fig. 8. Fan key location and display.

M12956

Fan

M12957

Auto

NOTE: Always press the keys with your fingertip or similar

blunt tool. Sharp instruments like a pen or pencil point can damage the keyboard.

Pub. No. 18-HD25D7-5

69-1213—1 (T8624)

XT302C DELUXE PROGRAMMABLE HEAT-COOL THERMOSTAT

Temperature Settings

Refer to Table 2 for the default program. For 7-Day and 24-Hour Operation, the settings are the same for each day of the week. Refer to the Owners Guide, Pub. No. 22-5127-04, for instructions on changing the default settings.

Table 2. Default Program Settings.

Period Time

Setpoint

Wake 6:00 AM 70°F

(21°C)

Leave 8:00 AM 62°F

(16.5°C)

Return 5:00 PM 70°F

(21°C)

Sleep 10:00 PM 62°F

(16.5°C)

The Leave, Return and Sleep periods may be cleared. For example, the daytime energy-savings period (from Leave to Return) may not be used by the homeowner. To clear any period, follow the instructions in the Owners Guide in the

Heat

Clearing Schedule Period

Comfort-R™ CONTROL

Adaptive Intelligent Recovery™ CONTROL (A HONEYWELL TRADEMARK)

COOLING DROOP

TEMPERATURE DISPLAY

CLOCK FORMAT

SYSTEM SETTING (HEATING AND COOLING SETTING)

OUTDOOR TEMPERATURE DISPLAY

PROGRAMMING

M17110

OFF ON

FARENHEIT (°F)

24-HOUR CLOCK FORMAT

AUTO/MANUAL (SYSTEM AUTOMATICALLY SELECTS HEAT OR COOL; YOU CAN SELECT HEAT, COOL OR OFF.)

NO OUTDOOR TEMPERATURE IS DISPLAYED

7-DAY PROGRAMMING

section.

OFF (CONVENTIONAL RECOVERY)

OFF

CENTIGRADE (°C)

24-HOUR CLOCK FORMAT

MANUAL ONLY (YOU SELECT HEAT, COOL OR OFF.)

NO OUTDOOR TEMPERATURE IS DISPLAYED

24-HOUR PROGRAMMING

Figure 9. Customizing Your Thermostat chart,

from Owners Guide, Pub. No. 22-5127-04.

Cool

Setpoint

78°F (25.5°C)

85°F (29.5°C)

78°F (25.5°C)

82°F (28°C)

Fan

Setting

Auto

AUTO ONLY (SYSTEM AUTOMATICALLY SELECTS HEAT OR COOL)

CONSTANT TEMPERATURE SETPOINT PROGRAMMING

INSTALLER SETUP

The Installer Setup is used to customize the thermostat for specific systems. Some of the options include Comfort-R™ control activation, Fahrenheit vs. Centigrade temperature display, outdoor temperature display (requires outdoor sensor installation), and system changeover. Installer Setup numbers are listed in Table 3. The table includes all the configuration options and the factory-settings for the XT302C Deluxe Programmable Multistage Thermostat .

NOTE: For most applications, the thermostat factory-

IMPORTANT

Installer Setup Procedure

settings apply. Review the factory settings in Table 2 and if no changes are necessary, go to the Installer Self-Test section.

The chart Customizing Your Thermostat found in the beginning of the Owners Guide (see Fig. 9) must be completed. The homeowner identifies the options you install by referring to this chart.

1. Press and hold the Information , Increase ▲, and Decrease ▼ keys at the same time until all display segments and the first setup number displays (all display segments appear for approximately three seconds before the setup number displays). See Figs. 11 and 12.

Set Program

Hold for

Em Ht

Start Time

Aux Ht

Mon

TueWedThuFriSatSun

Wake

LeaveReturnSleep

Set Day/Time

System Fan

Off Auto

Heat

Cool

Temporary Setting Enrg

Heat

Recovery

DST

Wait

Cool

Auto

Sav

Room

Outdoor

Repl Batt

Auto

M17111

Fig. 10. Display of all the segments of the LCD.

INSTALLER SETUP NUMBER DISPLAY (COLUMN 2 OF TABLE 3)

FACTORY SETTING OR OTHER CHOICE DISPLAY (COLUMN 3 OR 5 OF TABLE 3)

M10349

Fig. 11. Display of Installer Setup number and option.

Pub. No. 18-HD25D7-5

69-1213—1 (T8624)

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