Carrier Thermostat Comfort Zone 2 Manual

							 
11 Press the Next Period button until the DAY period is displayed. Repeat Steps 5Ð10 to set the starting time and the desired heating
and cooling temperatures for Zone 1, Monday, DAY. Continue the process for the EVE and SLEEP periods. 
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Now all of Zone 1, Monday has been programmed.
Press the Next Day button until Tuesday (Tu) is displayed and repeat Steps 4Ð10. 
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Continue to program the remaining days of the week.
After you have finished with Zone 1, press the Next Zone button and repeat the same process for the remaining zone or zones. 
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When you have finished entering your comfort chart schedule, review the program by repeating periods, days, and zones. Then press
the End button to exit the program.



 
HINT 
If a period has the same desired temperatures as the 
previous period, press the copy period button. Then 
change the starting time to reduce the number of 
keystrokes.  
HINT 
If Tuesday has the same settings as Monday, press the 
copy day button, and move on to Wednesday.  
HINT 
If the next zone has the same settings as the previous 
zone, press the copy period and copy day buttons at the 
same time to copy the entire zone. 
						

							 
12 
Using Your System
 
Now that you have completed programming your comfort schedule, it is time to use your system.
There are 2 operating modes: normal operation and programming mode. Unless you are programming the times or temperatures of
a zone, the user interface will be in the normal operating mode. 
Setting the current day:
 
If it is not already correct, press the Next Day button until the current day of the week is shown. 
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Setting the current time:
 
1.  Press the Set Time/Temp button until the TIME icon flashes. 
2.  Press the up or down buttons until the desired time is shown, making sure that AM or PM is correct. 
3.  When you are finished, press the End button to exit. (It will automatically exit after 15 seconds.) 
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13 
Selecting the system mode:
 
1.  Press the Mode button until you reach the desired mode.
2.  For an air conditioning system, select: OFF, HEAT, COOL, or AUTO.
3.  For a heat pump system, select: OFF, HEAT, COOL, AUTO, or EHEAT. 
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OFF Ñ no mode is selected, and the system is off
HEAT Ñ heating only
COOL Ñ cooling only
AUTO Ñ the system will heat or cool as needed
EHEAT Ñ emergency heat for heat pump applications only 
Selecting the fan mode:
 
1.  Press the Fan button to select either automatic fan operation (AUTO), in which the fan only runs when the 
equipment is on, or continuous fan operation (ON). 
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14 
Viewing the temperatures in each zone:
 
Press the Next Zone button to view the zone temperature and desired temperatures for each zone. 
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Clean filter feature:
 
Your Comfort Zone II system reminds you when to change or clean your filter. It tracks how many hours your equip-
ment has been operating and displays a CLEAN FILTER icon when it is time to change it. Once you have changed
the filter, press the Out and Hold buttons at the same time to reset this feature. 
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ZONE
TEMPERATURE
HEATING
DESIRED
TEMPERATURE
COOLING
DESIRED
TEMPERATURE

 
						

							 
15 
Displaying the outdoor air temperature:
 
If you purchased this option with your Comfort Zone II system, press the up and down buttons at the same time
to view the temperature outside your home or business. If 2 dashes appear (- -), your system does not include 
this feature. 
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16 
Overriding the Program Settings
 
Sometimes it may be desirable to override the program settings without changing the program. 
Turning a zone off:
 
On occasion it may be desirable to turn a zone off. For example, you may have a sunroom that is only used during the summer season,
or a workshop that may only be conditioned in the winter.
1.  To turn off a zone during cooling operation, press the up button until ÒOFÓ is displayed (above 90¡).
2.  To turn off a zone during heating operation, press the down button until ÒOFÓ is displayed (below 40¡).
OFF is a permanent override for that zone, and Hold will be displayed in the LCD. To turn the zone back on, press the up or down
button until the desired temperature is displayed. 
Temporarily overriding the program settings in a particular zone until the next period:
 
Perhaps you have guests and the temperature in that zone is getting too warm. You can temporarily change the desired temperature
for that period.
1.  Press the Next Zone button until the desired zone is displayed.
2.  Press the up or down buttons to the new desired temperature, or
3.  If necessary, press the Out button to change the zone to occupied or unoccupied (minimal heating or cooling). 
Overriding the program settings in a particular zone for an indefinite period of time:
 
If you have a zone that is a guest room, you may have the temperature in that zone set back to avoid sending unneeded conditioning
to that room. Now you have a guest. There is a quick method to override the settings for that zone.
1.  Press the Next Zone button until the desired zone is displayed.
2.  Press the Hold button.
3.  Press the Set Time/Temp button to select the heat or cool desired temperature.
4.  Press the up or down buttons to change the desired temperature. 
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Overriding the desired temperatures for all zones with the desired temperatures of one 
particular zone for an indefinite period of time:
 
If you are going on vacation, you may want to change the desired temperature to conserve energy. There is a way to do this without
reprogramming your schedules.
1. Press the Next Zone button until the zone with the desired temperature is displayed.
2. Press the All Zone button, and all the remaining zones will now have two dashes in place of the desired tempera-
ture display. These zones will now have the same desired temperature as the primary zone that was chosen.
3. Press the Hold button (indefinite).

 
						

							 
17 
Controlling Your  Humidity
 
Your Comfort Zone II system allows you to control the indoor humidity if you have optional equipment such as a humidifier or a
variable speed system. If you do not have these options, you can still view the indoor humidity in your home or business as well as
dehumidify your home or business while on vacation to prevent moisture damage. Check with your dealer to determine your equip-
ment features and limitations.
Depending upon where you live or work and the season of the year, you may need to humidify or dehumidify the air in your home
or business. With your new zoning system, you can control indoor humidity through your user interface instead of having several
different controls. 
Viewing the indoor humidity:
 
  
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1. Press the up and down buttons simultaneously. First the outdoor air temperature will be shown, then the indoor humidity. 
Programming the humidification setpoint (optional feature for use with a humidifier):
 
1. Press the Set Time/Temp and Fan buttons at the same time to enter the humidity programming mode. 
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182. Press the Set Time/Temp button until the lower setpoint is flashing.
3. Press the up or down button to raise or lower the desired humidity setting as needed. This can be set from 10Ð45 percent or off. 
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4. Press the Fan button to select between:
a.  FAN icon on Ñ when humidification is needed, the fan and humidifier will be turned on.
b.  FAN icon off Ñ when humidification is needed, the humidifier and the fan will be turned on only while heating.
Selection a will provide maximum humidifying capability, but because the heat source is not on, the air may feel cold. 
Selection b saves water and will provide adequate humidification under normal circumstances. The figure shows 
Selection a FAN will not be displayed with Selection b. 
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5. If your system includes the optional outdoor air temperature sensor, press the Mode button to select between:
a. AUTO icon on Ñ as the outdoor temperature decreases, the humidification setpoint automatically decreases to
prevent excess moisture buildup on windows in colder weather. The humidification setpoint changes with 
outdoor temperature.
b. AUTO icon off Ñ the humidification setpoint does not change with outdoor temperature. The figure shows 
Selection a AUTO will not be displayed with Selection b. 
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6. Press the End button at any time to exit the humidity programming function.


 
						

							 
19 
Programming the dehumidification setpoint (optional feature for use with variable speed
equipment):
 
1. Press the Set Time/Temp and Fan buttons at the same time to enter the humidity programming mode.
2. Press the Set/Time button until the upper setpoint is flashing.  
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3. Press the up or down arrows to raise or lower the desired setting. This can be set from 50Ð90 percent or off.
4. Press the End button at any time to exit the humidity programming function. 
Programming your system for the Cool to Dehumidify function:
 
The dehumidification feature is designed for use with variable speed indoor equipment. However, if you have standard equip-
ment or live or work in a very humid climate, you can choose to run your cooling equipment more often to remove excess mois-
ture from the air. The Cool to Dehumidity feature allows the system to turn on the air conditioning as needed to try to reach the
dehumidification setpoint, while only lowering your indoor temperature 3 degrees. So, if you have set your cooling desired
temperature at 76¡ and your dehumidification setpoint at 65 percent, the system will turn on the air conditioning to try to reach
the 65 percent, allowing the temperature to drop to no less then 73¡ in your home or business. To activate this function, follow
the steps below:
1. Press the Set Time/Temp and Fan buttons at the same time to enter the humidity programming mode.
2. Press the Set Time/Temp button until the upper setpoint is flashing.
3. Press the up or down arrows to raise or lower the desired setting. This can be set from 50Ð90 percent or off.
4. Press the Mode button and the COOL icon will be displayed.
5. Press the End button at any time to exit the humidity programming function. 
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20 
Programming your system to dehumidify while on vacation:
 
If you are traveling or your home or business will be unoccupied for some period of time, you may want to occasionally run
the air conditioner to prevent moisture damage. This feature is particularly important in very humid regions.
Following the five steps listed in the previous section, adjust the dehumidification setpoint to your desired setting and activate
the ÒCool to DehumidifyÓ function. Make sure the COOL icon is displayed. Press the End key to exit the humidity program-
ming function.
From the normal operation mode, press the Hold, Out, and All Zone buttons in that order to program all zones to an unoccupied
status. Until you return, the air conditioning equipment will be turned on as necessary to reach the dehumidification setpoint,
but it will not drop the indoor temperature lower than 70¡F. In order for this function to work properly, it must be used with
the ÒCool to DehumidifyÓ feature.
Humidity Control is an additional enhancement to your Comfort Zone II system. You may choose not to use this feature because of
equipment limitations, geographic location, or personal preference.