ComfortNET CTK02AA Assembly instructions

ComfortNet HiDef Control
HOMEOWNER’S GUIDE
HiDef Communicating Control System
FOR SMART HVAC SYSTEMS
Part No. CTK02AA

Message to the Homeowners
Your premium ComfortNet™control system is designed to give
you and your family the indoor comfort you desire. It’s easy to
use, energy-efficient and reliable. It ensures your system is set up
properly, running at its most efficient and provides optimal comfort.
Introduction to your ComfortNet™
HiDef Control
Your ComfortNet control is designed to regulate and communicate
with your central heating and cooling control. This control system
has the ability to share information so that you will enjoy efficient
comfort throughout your home.

ComfortNet HiDef Control Homeowner’s Guide / 1
Control System Overview................................................................................ 2
Quick Start Guide ............................................................................................. 4
Navigating Through Your Control System Menus.......................................... 4
Set the Current Time and Day ...................................................................... 5
Choose the System Setting .......................................................................... 6
Energy Saving Factory Pre-Program ............................................................ 6
Using Your Control system .............................................................................. 7
System Setting.............................................................................................. 7
Auxiliary Heating........................................................................................... 8
Temporary Temperature Hold ....................................................................... 8
Permanent Temperature Hold ....................................................................... 9
Choosing the Fan Setting ............................................................................. 10
Maintenance Reminders............................................................................... 11
Setting Up Your Control system Options ....................................................... 12
Clock and Display Settings menu ................................................................. 12
Heating Program/Cooling Program............................................................... 14
Fan Setting Menu.......................................................................................... 15
Control System Setting Menu ....................................................................... 16
Air Filter Maintenance/UV Lamp Maintenance/Humidifier Maintenance ...... 18
Programming Your Control system................................................................. 20
Planning Your Program ................................................................................. 20
Enter the Heating & Cooling Programs......................................................... 21
Diagnostics ....................................................................................................... 23
Alert Information Detail ................................................................................. 23
Reset Operation............................................................................................ 24
Record of Control system Options Selected................................................. 26
Service Information....................................................................................... 26
Contents

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8
10
9
6
5
4
3
Control System Home Screen Display and Controls
1
78
2
10
12 11

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1The indoor temperature
2The relative indoor humidity
3The day of the week and the time
4The outside temperature if outdoor sensor
is connected
5The desired temperature or setpoint
6Indicates system setting or .
7This button selects system settings Cool,Heat,EM,Auto, or Off.
In the menus, this button is used to display the Home screen
8and move the temperature up and down.
Also used to navigate through menus
9is used to enter any menu function of the control system
10 and used to move through the menu settings.
Also, the is used to exit the temperature hold function
11 This button selects the fan operation On or AUTO. Also the Enter
button in the control system menus used to save entries and display
previous menu.
12 Indicates Fan mode or .

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Your control system features a simplified easy to understand menu structure.
Navigating through any menu in your control system uses the same approach.
Press to enter the Main Menu
Highlight a menu item using the or buttons
Enter the item by pressing
Use the or and the or to change menu items and settings
Press the Home button to display the Home Screen.
Press the Enter button to save any changes
you have made and display the previous menu.
If no button is pressed for two minutes, you will return to the home screen
without saving changes.
Navigating through your control system menus

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Press to enter the Main Menu
Set the Current Time and Date
On the Main Menu, highlight and enter Clock
and Display Settings.
Highlight and Enter Time & Date.
Set the time and date using the or
buttons.
Press to highlight Minute, AM/PM, Month,
Day or Year.
The control system will automatically assign
the correct day of the week after the date is
set.
Press the Enter button when finished.
Note: If system power is lost for more than
eight hours, the clock will have to be
reset. Programming and configuration
settings will be saved.

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Choose the System Setting
From the Home screen, press the button as
shown to choose the system setting.
Factory Pre-Programmed Heating and Cooling Schedule
If you want to change the heating and/or cooling programs in your control system,
see the “Programming Your Control system” section.
Wake Up
(Morning)
Leave for Work
(Day)
Return Home
(Evening)
Go to Bed
(Night)
Heating Program 6:00 AM 70oF 8:00 AM 62oF 5:00 PM 70oF 10:00 PM 62oF
Cooling Program 6:00 AM 75oF 8:00 AM 83oF 5:00 PM 75oF 10:00 PM 78oF
Energy Saving Factory Pre-Program
Your control system is programmed from the factory with the energy saving settings
shown below for every day of the week. If this program meets your needs, simply
select either Cool,Heat or Auto using the System button and press to begin
program operation.

ComfortNet HiDef Control Homeowner’s Guide / 7
System Setting
Press the System button to choose whether you want your system to be in Cool, Heat,
EM or Auto mode.
Control system controls only
the cooling system.
Control system controls only
the heating system.
Heating and Cooling systems
are off.
Emergency setting available
only when the control system
detects a heat pump in the
system. When selected, system
will use only the backup heat.
Auto Changeover is used
where both heating and
cooling may be required
during the same day. AUTO
allows the control system to
automatically select heating
or cooling depending on the
indoor temperature and the
selected heat and cool temperatures.
This control system will not allow you to
program a conflict between Heating and
Cooling setpoints.
For example: In the morning heating
is required. During the day, the
temperature gets warmer and you want
the air conditioner to run. The control
system will automatically change the
system mode from heating to cooling.
The temperature you desire in your home
can be changed by pressing or .

8 / Homeowner’s Guide ComfortNet HiDef Control
Auxiliary Heating
(Heat pumps only)
If you have a heat pump, your system will
automatically activate Auxiliary Heating when the
outside temperature is too cold for the heat pump to
efficiently heat your home. When Auxiliary Heating is
called for, the display will show “Aux” with the Heat
icon. In dual fuel applications “Aux” will indicate gas
furnace operation.
Temporary Temperature Hold
You can temporarily adjust the temperature in your
home at any time while your control system is running
a program by pressing either the or . Your control
system will maintain this desired temperature for four
hours (default). The display will show “Hold at” by
the desired temperature, and “Hold Until” with the
time the temporary hold will end. The display will also
briefly show “Press or to set the Hold Time”.
While this message is displayed, you can change the
time that you wish to have the Hold end.
Press the button to cancel a temporary hold. The
desired temperature will display the current program
setting.

ComfortNet HiDef Control Homeowner’s Guide / 9
Permanent Temperature Hold
If you desire, you can set your control system
to permanently hold a temperature. This feature
will bypass any programs you may have set
in your control system and maintain a single
constant temperature. This is a convenient
feature to use if you are going to be away from
the house for a set amount of time such as a
vacation.
To use Permanent Hold, change the
temperature with the or and press the
Hold button. When your control system is
in Permanent Hold, the “Hold at” will be
displayed by the desired temperature.
Press the button to exit permanent hold and
display the current program setting.

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Using Your
Control system
Choosing the Fan Setting
(On or Auto)
Fan Auto This is the most commonly used
setting. The fan will turn on only when the
heating or cooling system is running.
Fan On You can choose to have the fan
running continuously by selecting Fan On.
When this is selected, the fan will run at the
speed (High, Medium, or Low)selected in the
Fan Settings menu.

ComfortNet HiDef Control Homeowner’s Guide / 11
Maintenance Reminders
Your control system can automatically provide
reminders when the air filter, humidifier pad, or
UV lamp needs to be replaced. Each of these
reminders are turned on or off and the reminder
time period set from the appropriate item in the
Control system Settings Menu.
Maintenance reminders are:
When a reminder appears, it can be turned off
by entering the Alert Information Detail menu
on the Main Menu.
Select Yes to “Clear Alert and Reset Timer”.

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Clock and Display Settings Menu
In addition to setting time and day on this menu, you can use the Display Settings
menu to adjust the screen brightness, choose the background color, select the
keypad backlight, and the auto dimmer. Other choices select what will be displayed
on the Home screen, Time & Day, Outdoor Temp Display, Humidity Display and Alert
Message Area.
On the Main Menu, highlight and Enter Clock
and Display Settings
Highlight and Enter Display Settings

ComfortNet HiDef Control Homeowner’s Guide / 13
Theme. Theme allows the user to choose from alternate
background schemes.
Keypad Backlight. When selected On, the light on the keypad will
be on to give the keypad better visibility. If selected Off, the keypad
light will turn on for a short time when a button is pressed and then
turn off again.
Brightness. By using the and this adjusts the
backlight between dark and bright.
Display Backlight. The display backlight menu item shall be used to
turn on or off the LCD backlight. Display backlight setting shall be On
by default. Upon selecting the Display Backlight menu from the Display
Settings menu, display backlight menu shall be displayed as shown at
left. If the display backlight is set to Off, then the thermostat shall turn
On the LCD backlight only if a key press is detected. If a key press
is detected when the display backlight is set to Off, TSTAT shall turn
on the LCD backlight. The TSTAT shall turn off the backlight again if it
does not detect a key press for more than 8 seconds.

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Heating Program/Cooling Program
On the Main Menu, highlight and enter Heating or Cooling Program.
See upcoming Programming Your Control System section.
Auto Dimmer. When selected On, the display will change to
a darker background during the hours of 10:00 PM to 5:00
AM when no buttons are pressed. If selected Off, the display
will remain at the same brightness.

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Fan Setting Menu
This menu selects the speed that the fan will run when selected On with
the Fan button.
On the Main Menu, highlight and enter Fan
Settings
Enter Fan “On” Speed.
Default is “Medium”. Select fan speed of
medium, low or high.

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Control System Settings Menu
Additional control system operating settings are found in the Control system
Settings Menu.
On the Main Menu highlight and enter Control
system Settings
Air Filter Maintenance/UV Lamp Maintenance
Humidifier Maintenance
Default for each is Off. When set to On, a maintenance reminder will appear on
the home screen when the system has run for the selected amount of time. The
length of time for the maintenance reminder can be selected to a setting of 1 to
12 months.

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°F or °C – Default is °F. Select temperature
display to be Fahrenheit or Celsius.
Use or to select On or Off. When On is
selected, set time of maintenance period using
and .

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EMR (Energy Management Recovery)
Default is On. With EMR selected On, the
heating or cooling system will start early so
the temperature in your home is at the desired
temperature at the beginning of the program
period. If set to Off, the system will not start
until the beginning of the program period.
Beeper – Default is On. Turns audible prompt
on to indicate when a button is pressed.