THERMIDISTAT™ CONTROL Homeowner’s Guide · keeps you comfortable while conserving energy. Just ... select between: a. FAN indicator displayed — fan and humidifier on every time

Now that you own Carrier’s ThermidistatControl, it’s time to customize yourindoor weather. Carrier’s intelligent, easy-to-useindoor weather command center combines comput-er-like intelligence with extremely simple operationin an elegant package. It maximizes the performanceof your Carrier indoor weather system so you canenjoy custom made indoor weather that fits yourlifestyle. By precisely controlling indoor tempera-tures and humidity levels, our Thermidistat Controlkeeps you comfortable while conserving energy. Justfollow the simple instructions outlined in this manual and let Carrier’s Thermidistat Control deliverthe customized comfort and energy savings that you deserve.

Custom made indoor weather.

Carrier CorporationIndianapolis, IN 46231

© 1998 Carrier CorporationForm: OMTSTAT-11Replaces: OMTSTAT-8Printed in the U.S.A.9-98Catalog No. 03TS-TA11

Homeowner’s Guideco

mfo

rtTHERMIDISTAT™ CONTROL

Manufacturer reserves the right to discontinue,or change at any time,specifications or designs without notice or without incurring obligations.

NP TMstat Homeowner's Guide 8/24/01 11:21 AM Page 1



Carrier CorporationIndianapolis, IN 46231

© 1998 Carrier CorporationForm: OMTSTAT-11Replaces: OMTSTAT-8Printed in the U.S.A.9-98Catalog No. 03TS-TA11

Homeowner’s Guide

com

fort

THERMIDISTAT™ CONTROL

Manufacturer reserves the right to discontinue,or change at any time,specifications or designs without notice or without incurring obligations.


Carrier’s Thermidistat Control isthe command center of your indoorweather system. By providing both

temperature and humidity control, this sim-

ple yet powerful device lets you take the

steam out of summer, the static out of win-

ter and helps eliminate that annoying mois-

ture build-up on your windows when it’s

cold outside. It’s never been quite this easy.

Comfort command center.

cont

rol Carrier puts your family’s comfort

at your fingertips with simpleinstructions, responsive push but-tons and an easy-to-read backlitLCD display. Once set, the

Thermidistat Control reliably monitors

indoor conditions and responsively meets

your comfort demands for consistent,

energy-eff icient indoor weather.

Making life easier.

feat

ures

NOTE: Not all messages displayed in the above illustration will appear at once in any situation. •Available on selected models.

MODE Button selects OFF, HEAT,COOL, or AUTO operation. EMER-GENCY HEAT (EHEAT) mode is alsoincluded when the ThermidistatControl is installed with a heat pump.

FAN Button choos-es ON or AUTO fanoperation.

▲

Room Tempera-ture Displayshows currentroom temperature.▲

▲

SET HUM Buttonallows you tochange humidifi-cation set point.

SET TIME Buttonallows you to enterthe time of day.

SET HEAT Buttonallows you to enteryour desired heat-ing set point.

VACATION Button changestemperature and humidity setpoints to lower levels for opti-mum energy efficiency whileyou’re away.

▲RESET FILTER Function restartsthe timer that determines the nextair filter change or cleaning.Activated by pressing VACATIONand END buttons simultaneously.

▲END Button com-pletes the tempera-ture and humidityset-up sequence.

▲ ▲

▲

SET COOL Buttonallows you to enteryour desired cool-ing set point.

▲

SET DHUM Buttonallows you tochange dehumidifi-cation set point.

▲

Up and Down Buttons changethe temperature and humidity setpoints. They are also used toaccess outdoor temperature andindoor humidity levels.

▲

*OutdoorTemperatureDisplay shows theoutdoor temperature.▲

*Auxiliary HeatIndicator is dis-played when a heatpump system’s aux-iliary heat is on.

▲

Time of DayDisplay exhibitsthe time of day.

▲▲

Clean FilterIndicator lets youknow it is time toclean or replace yoursystem’s air filter.

TemperatureSettings Displayshows the temper-ature settings forcurrent time period.▲

▲


Carrier’s Thermidistat Control isthe command center of your indoorweather system. By providing both

temperature and humidity control, this sim-

ple yet powerful device lets you take the

steam out of summer, the static out of win-

ter and helps eliminate that annoying mois-

ture build-up on your windows when it’s

cold outside. It’s never been quite this easy.

Comfort command center.co

ntro

l Carrier puts your family’s comfortat your fingertips with simpleinstructions, responsive push but-tons and an easy-to-read backlitLCD display. Once set, the

Thermidistat Control reliably monitors

indoor conditions and responsively meets

your comfort demands for consistent,

energy-eff icient indoor weather.

Making life easier.

feat

ures

NOTE: Not all messages displayed in the above illustration will appear at once in any situation. •Available on selected models.

MODE Button selects OFF, HEAT,COOL, or AUTO operation. EMER-GENCY HEAT (EHEAT) mode is alsoincluded when the ThermidistatControl is installed with a heat pump.

FAN Button choos-es ON or AUTO fanoperation.

▲

Room Tempera-ture Displayshows currentroom temperature.▲

▲

SET HUM Buttonallows you tochange humidifi-cation set point.

SET TIME Buttonallows you to enterthe time of day.

SET HEAT Buttonallows you to enteryour desired heat-ing set point.

VACATION Button changestemperature and humidity setpoints to lower levels for opti-mum energy efficiency whileyou’re away.

▲RESET FILTER Function restartsthe timer that determines the nextair filter change or cleaning.Activated by pressing VACATIONand END buttons simultaneously.

▲END Button com-pletes the tempera-ture and humidityset-up sequence.

▲ ▲

▲

SET COOL Buttonallows you to enteryour desired cool-ing set point.

▲

SET DHUM Buttonallows you tochange dehumidifi-cation set point.

▲

Up and Down Buttons changethe temperature and humidity setpoints. They are also used toaccess outdoor temperature andindoor humidity levels.

▲

*OutdoorTemperatureDisplay shows theoutdoor temperature.▲

*Auxiliary HeatIndicator is dis-played when a heatpump system’s aux-iliary heat is on.

▲

Time of DayDisplay exhibitsthe time of day.

▲▲

Clean FilterIndicator lets youknow it is time toclean or replace yoursystem’s air filter.

TemperatureSettings Displayshows the temper-ature settings forcurrent time period.▲

▲


TABLE OF CONTENTS

SETTING UP THE THERMIDISTAT CONTROLSetting your indoor temperature set points ...1Setting the current time ................................2Setting the mode operation ..........................3Setting the fan operation ..............................5Setting the humidification set point ..............6Setting the dehumidification set point . .........9Setting the “cool to dehumidify” function ..10

OPERATING THE THERMIDISTAT CONTROLChecking current temperature ....................12Checking the outdoor temperature

and indoor humidity ...............................12Checking current humidification

and dehumidification set points . .............13Clean filter feature .....................................14

Vacation feature setup ................................15Vacation feature operation .........................19

AUTO CHANGEOVER ..................................20WHAT IF…

The auxiliary heat indicator is displayed ....21The clean filter indicator is displayed .........21You have a power outage ...........................22You have a system error message ...............22

Warranty .......................................................24Common Terms and Where to Find Them .....25

i

SETTING UP THE THERMIDISTAT CONTROL

Setting your temperature set pointsSetting the desired heating set point

1 Press the SET HEAT button.

The word HEAT flashes on the display.

2 Press the UP or DOWNbutton until the correct heating set point is displayed.

3 Press the END button to exit.

Setting the desired cooling set point

1 Press the SET COOL button.

The word COOL flashes on the display.

1


2 Press the UP or DOWNbutton until the correct

cooling set point is displayed.


NOTE: Your COOL setting must be at least2° higher than your HEAT setting. YourThermidistat Control will automaticallychange your previously set temperature tomaintain that 2° difference.

Setting the current time

1 Press the SET TIME button.

The word TIME flashes on the display.

2 Press the UP or DOWNbutton until the correct

time is displayed. To quickly advance to

2


the proper time, press and hold the UPor DOWN button. Be sure that AM orPM is properly selected.

3 When the correct timeappears on the display, press the END button.

NOTE: If you choose not to press the ENDbutton, the word TIME will stop flashingafter 15 seconds.

NOTE: If you live in a Daylight SavingsTime area, you may advance the time 1hour in the spring by simultaneously pressing the SET TIME button and the UPbutton. In the fall, you may set the timeback 1 hour by simultaneously pressing theSET TIME button and the DOWN button.

Setting the mode operation

1 Press the MODE button.

3


2 When the MODE button is pressed,the words

OFF,

HEAT,

COOL,

and AUTO will rotate on the display.If you have a heat pump, the displaywill show OFF, HEAT, COOL, AUTO, and EHEAT.

4


NOTE: In AUTO mode, your system willheat OR cool as needed to reach your temperature settings. AUTO mode may bedisabled.

3 Continue to press theMODE button until you reach thedesired setting.

Setting the fan operation

1 Press the FAN button toswitch between ON and AUTO fan settings.

When the ON mode is selected, the fan runs continuously for improved air circulation.

5


NOTE: If the indoor humidity level is abovethe dehumidify setting, the fan will shut offfor 5 minutes after the air conditioner shutsoff. During this period, a triangle next tothe word ON will flash.

When the AUTO mode is selected, thefan runs only as needed to maintainyour preferred indoor temperature settings.

Setting the humidification set point

1 Press the SET HUM buttonto enter the humidify mode.

The current indoor humidity (largenumber) and humidify set point (smallnumber) are displayed along with thehumidify indicator (hu).

6


2 With the humidify indicator(hu) displayed, press the

UP or DOWN button to adjust thehumidify set point. Humidity levels canbe set from 10% to 45%.

Or, to turn humidification off, press theMODE button until “OF” appears on thedisplay. (See suggested settings on page 27.)

3 Press the MODE button toselect between:a. FAN indicator displayed — fan and humidifier on every time humidification is needed.

NOTE: With the FAN indicator displayed,you will realize maximum humidification,but the air may feel cold because the heat

7


source is not always on. Without the FANindicator displayed, you will conservewater and electricity with adequate humidification.b. AUTO indicator displayed — humidify setting automatically changesaccording to outdoor weather. Thisreduces the chance of moisture buildupon windows in colder weather.

NOTE: This feature requires the use of anoutdoor air temperature sensor.

c. AUTO and FAN displayed — com-bines the features of a and b.

d. OF displayed — humidify function is turned off.

8


e. Humidify setting only displayed —humidify setting does not change according to outdoor temperature.

4 Press the END button toexit the humidify mode.

Setting the dehumidification set pointNOTE: This function is for use with variable-speed equipment only.

1 Press the SET DHUM button to enter the dehumidify mode.

The current indoor humidity (large number)and dehumidify set point (small number) are displayed along with the dehumidify indicator (dhu).

9


2 With the dehumidify indicator (dhu) displayed,

press the UP or DOWN button to adjustthe dehumidify set point. Dehumidify levels can be set from 50% to 90%. Or, toturn dehumidification off, press the MODEbutton until “OF” appears on the display.

(See suggested settings on page 26.)


Setting the “cool to dehumidify”functionThis setting allows a standard comfortsystem to provide moderate dehumidi-fication by running the air conditioner.The function can also be used withvariable-speed equipment.

NOTE: While in the “cool to dehumidify”mode, the indoor air temperature will notdrop more than 3° below the cooling setpoint with a dehumidification demand.

10


1 Press the SET DHUM button. “dhu” is displayed.

2 Press the UP or DOWN button to raise or lower the

dehumidify set point.Dehumidification can be set from 50%to 90%.

3 Press the MODE buttonuntil the COOL icon is displayed.


11

OPERATING THE THERMIDISTAT CONTROL

Checking current temperatureThe Thermidistat Control will displaythe current temperature.

To view your current temperature set points, press the UP or DOWN

button once. The heating and coolingset points will be displayed.

Checking the outdoor temperatureand indoor humidity

1 Press the UP and DOWN buttons simultaneously.

2 The outdoor temperature will appear on the display. Then, the indoor humidity will be displayed.

12


NOTE: If 2 dashes (--) appear, yourThermidistat Control does not include the outdoor air temperature sensor or thesensor is not working properly. Check with your dealer if you are unsure.

Checking current humidificationand dehumidification set points

1 Press the SET HUM button.

The current indoor humidity (large num-ber) is displayed along with the humidifyset point (small number).

2 Press the END button.

13


3 Press the SET DHUM button.The current indoor humidity (large num-ber) is displayed along with the dehumidify set point (small number).

4 Press the END button.

Clean filter featureYour Thermidistat Control reminds youwhen it’s time to change or clean your filterby displaying the CLEAN FILTER indicator.

1 Press the VACATION and END buttons simultaneouslyafter you have changed or

cleaned your filter to restart the timer.

14


Vacation feature setupThe vacation feature allows a separateset of temperature and humidity setpoints to be stored for vacation andrecalled with a single button press.

The vacation feature is preprogrammedfor you with vacation settings for temperature and humidity. (Heat 60°,cool 85°, hu 10%, dhu 75%) If theseare okay, skip ahead to “vacation feature operation.” If you wish to enternew settings, continue with this section.

1 Press the VACATION button to display the vacation temperature settings.

The OUT indicator is displayed.

15


2 To change the cooling set point:

a.) Press the SET COOLbutton. COOL will flash on the display.

b.) Press the UP or DOWNbutton to adjust the setting.

c.) Press the END buttonto end.

3 To change the heating set point:

a.) Press the SET HEAT but-ton. HEAT will flash on the display.

b.) Press the UP or DOWN button to adjust the setting.

c.) Press the END button to end.

16


4 To change the dehumidification set point:

a.) Press the SET DHUMbutton. The “dhu” indicator will be displayed.


c.) Press the MODE button to choose the

dehumidification mode.


17


5 To change the humidification setpoint:

a.) Press the SET HUM button. The “hu” indicator will be displayed.


c.) Press the MODE button to turn the

humidification feature off (OF).


NOTE: In dehumidify, you may enter a setpoint, choose “COOL” to dehumidify, orturn dehumidification off (OF). In humidify,you may enter a setting or turn humidification off (OF).

18


Vacation feature operation

1 Press the VACATION button when you are ready to leave. Be sure you have properly selected themode (HEAT, COOL, AUTO).

The OUT indicator is displayed, andyour system will automatically followyour vacation temperature and humidity settings.

2 Press the VACATION button when you return to resume normal operation.

19

AUTO CHANGEOVER

Your Thermidistat Control provides complete, automatic control over heatingand cooling with auto changeover. Autochangeover means your system willautomatically heat or cool as needed tomaintain your temperature set points.

Auto changeover makes life easierbecause you no longer have to manuallyswitch the thermostat between heatingor cooling operation. Just set your heatingand cooling set points and let theThermidistat Control do the rest!

NOTE: If Auto Changeover mode is notnecessary in your area of the country, yourinstaller may disable the AUTO mode.

20

WHAT IF…

AUXILIARY HEAT indicator is displayed…The AUXILIARY HEAT indicator appears onthe heat pump version of the ThermidistatControl only. It is displayed when your system is operating on auxiliary heat.

NOTE: This indicator does not reflect a prob-lem with your system.

CLEAN FILTER indicator is displayed…The CLEAN FILTER indicator tells youwhen to clean or replace your system’s airfilter. Press the VACATION and END buttons simultaneously after cleaning orreplacing the filter to turn off the indicatorand restart the timer.NOTE: This indicator does not reflect a problem with your system.

21

WHAT IF…

OUT Indicator is displayed…The OUT indicator reminds you that yoursystem is in vacation mode. This functionautomatically adjusts the temperatureand humidity settings to levels appropriate for when you’re away. Press the VACATION button to resumenormal system operation.

NOTE: This indicator does not reflect aproblem with your system.

EQUIPMENT ON Indicator is displayed…When the cooling equipment is operating,the word COOL preceded by a small triangle is displayed below the cooling setpoint. When the heating equipment isoperating, the word HEAT preceded by asmall triangle is displayed below the heating set point. If the equipment turn onis being delayed, the triangle and the wordwill flash.

NOTE: This indicator does not reflect aproblem with your system.

22

WHAT IF…

You have a power outage…An internal power source eliminatesthe need to re-enter your settings intothe Thermidistat Control after poweroutages. The comfort settings you haveentered will be maintained indefinitely.The clock will run for 8 hours.

You have a system error message…The display may appear as follows:

--, E3, E4, E5, or E6

-- indicates a problem with the indoorair temperature sensor

E3 indicates a problem with the outdoor air temperature sensor

E4, E5, or E6 indicates an internal failure.

23

WARRANTY

This Thermidistat Control includes a 1-year limited warranty. For detailedwarranty information, please refer tothe All Product Limited Warranty Cardincluded in your information packet.This Thermidistat Control is also eligible for manufacturer’s extendedsystem warranties. Ask your dealer for details on extended warranties forlonger-term protection.

24

COMMON TERMS AND WHERE TO FIND THEM

Auxiliary Heat ......................Pg. 21Most heat pump systems require a supplemental heating source, calledauxiliary heat, to maintain your comfort when outdoor temperatures fall significantly. Your ThermidistatControl lets you know when your homeis being warmed with supplemental heat.

Clean Filter ..........................Pg. 14Your system’s air filter will require regular cleaning to reduce the dirt anddust in the system and your indoor air.The CLEAN FILTER indicator lets youknow when it’s time to clean the filter.

25


Dehumidification Set Point ....Pg. 9The amount of moisture to be removedfrom your home. You can check youractual humidity level and your desireddehumidification set point by pressingthe SET DHUM button.

Suggested settings: 50% – 60% suggested depending on installation,area of the country, and your heating &cooling equipment.

Emergency Heat .....................Pg. 4This indicates that auxiliary heat isbeing used without the heat pump.

End .........................................Pg. 1The END button returns theThermidistat Control to normal operation.

26


Fan .........................................Pg. 5Your system’s fan can run continuouslyor only as called for during heating orcooling. Continuous operation helpswith air circulation and cleaning.Automatic operation provides energysavings. Press the FAN button to makeyour choice.

Humidification Set Point ........Pg. 6The amount of moisture desired in your home to be supplied by thehumidifier. You can check the actualhumidity level and your desired humidification set point by pressing the SET HUM button.Suggested settings:

27


Mode .................................Pgs. 3-5Mode refers to the type of operationyour system is set up to perform. Modesettings include: OFF, HEAT, COOL,and AUTO. Heat pump systems alsoinclude EMERGENCY HEAT (EHEAT).

Outdoor Temperature ...........Pg. 12Your Thermidistat Control not onlymeasures the indoor temperature, but itmay also be equipped to measure anddisplay the outdoor temperature aswell. Press the UP and DOWN buttonssimultaneously to read the outdoortemperature display.

28


Power Outage ........................Pg. 22Complete loss of electricity. YourThermidistat Control has an internalpower source that allows the clock tocontinue to run for 8 hours or morewithout electricity. Settings are storedindefinitely without the aid of batteries.

Reset Filter ..............................Pg. 14The reset filter function turns off theCLEAN FILTER indicator and restartsthe timer. Press the VACATION andEND buttons simultaneously afteryou’ve cleaned and replaced the sys-tem’s air filter.

29


Set Time .....................................Pg. 2This function allows you to set theproper time. Press the SET TIME buttonto activate.

Temperature Sensor .............Pg. 12Temperature sensors measure the cur-rent indoor or outdoor temperatureswhich are displayed on the ThermidistatControl.

Temperature Set Points ...........Pg. 1These are the desired heating and cooling set points entered into theThermidistat Control. The actual roomtemperature will automatically be displayed, but you can check thedesired temperature for the currentmode by pressing either the UP orDOWN button.

30


Time .......................................Pg. 2The current time is displayed continuously on the display.

Up and Down Buttons ...........Pg. 1These buttons are used to set the clockand enter temperature and humidityinformation.

31



Carrier Corporation Indianapolis, IN 46231

© 1998 Carrier Corporation Form: OMTSTAT-11 Replaces: OMTSTAT-8 Printed in the U.S.A. 9-98 Catalog No. 03TS-TA11

Homeowner’s Guide

comfort

THERMIDISTAT™ CONTROL

Manufacturer reserves the right to discontinue, or change at any time,specifications or designs without notice or without incurring obligations.


Documents

THERMIDISTAT™ CONTROL Homeowner’s Guide · keeps you comfortable while conserving energy. Just ... select between: a. FAN indicator displayed — fan and humidifier on every time