With wireless accessories
Modulating control for up to 4 Heat/2 Cool communicating heat pump systems or up to 3 Heat/2 Cool communicating gas heat, electric cooling systems for residential and commercial applications.
DISCONNECT POWER BEFORE INSTALLATION
Can cause electrical shock or equipment damage.
MERCURY NOTICE
If this product is replacing a control that contains mercury in a sealed tube, do not place the old control in the trash. Contact the Thermostat Recycling Corporation at www.thermostat-recycle.org or 800-238-8192 for information on how and where to properly and safely dispose of your old thermostat Must be installed by a trained, experienced technician. Read these instructions carefully. Failure to follow these instructions can damage the product or cause a hazardous condition.
The premium Honeywell ComfortNet™ control system is easy to use, energy-efficient, and reliable and ensures the system is set up properly. Advanced operating algorithms built into the control deliver efficient equipment operation while providing economical comfort. The Honeywell ComfortNet Communicating thermostat is designed to regulate and communicate with the central heating and cooling equipment and has the ability to share information so the user will enjoy efficient, economical comfort throughout the home.
RedLINK™ Compatible
RedLINK accessories include the Wireless Outdoor Sensor, Portable Comfort Control (PCC), RedLINK Internet Gateway, Wireless Indoor Sensor, TrueSTEAM™ humidifier with Wireless Adapter, Vent Boost Remote, and Entry/Exit Remote.
Customizable Service Reminders
Set up to 10 service reminders. Choose from pre-set options or customize your own. Pre-set reminder options include filter replacement, humidifier maintenance, dehumidifier filter, ventilator filter, UV bulb replacement, annual service, spring service, fall service and warranty expiring soon. Reminders based on the date or outdoor temperature will be displayed on the thermostat’s main screen along with pre-set or custom instructions
User Interactions Log
The interaction log stores the history of thermostat setting changes including temperature, system and installer setup. You can use the interaction log to save time by determining if the issue is a system error or an accidental user error.
Configurable for Residential and Light Commercial Applications
One thermostat does it all to meet the needs of Residential and Light Commercial applications. Simply select Residential or Commercial during the installer setup. If Commercial is selected, the thermostat will use commercial language, meet building codes and offer 365 day holiday schedule.
USB Port
Visit thermostatsetup.honeywell.com to enter your dealer information and save to a USB stick. Then load your dealer information and logo to multiple thermostats. After setting up a thermostat, save Installer Setup, Holiday / Event Scheduler and Custom Reminders to a USB stick. Then load this information to multiple thermostats. To use the USB port, insert a USB stick in the bottom of the thermostat. Then select the item you would like to load or save.
Selectable Sensors
When paired with a Wireless Indoor Sensor(s) you have the ability to choose which sensor(s) to use for temperature, humidification and dehumidification. They can be used in combination for temperature averaging—or individually—to condition humidity levels in separate spaces.
This booklet contains installation instructions and information on the thermostat and wireless accessories. Separate installation instructions for the furnace or air handler and outdoor AC condensing unit or heat pump are provided with the appropriate equipment. This thermostat is designed exclusively for use with the ComfortNet communicating system.
Valid System Configurations
This control may only be used with certain system configurations. Valid system configurations for which this control can be used are:
Thermostat Mounting
Mount the thermostat approximately 5 feet from the floor on an interior wall using the included screws and anchors. Drill 3/16″ holes for drywall and 7/32″ holes for plaster. Do not install the thermostat where it can be affected by:
Terminal Functions
Wire Gauge
18 gauge wire is recommended. The maximum wire distance between the ComfortNet thermostat and the IFC should not exceed 100 feet using 18 gauge wire.
Wiring Thermostat, Indoor Unit, and Outdoor Unit
Wire Thermostat to Indoor Unit
Connect 1, 2, R, and C from the thermostat to 1, 2, R, and C at the Indoor Unit.
Wire Outdoor Unit
Connect wires 1 and 2 from the Indoor Unit to 1 and 2 at the Outdoor Unit. Install the transformer provided and connect to R and C at the Outdoor Unit. (NOTE: installing the additional transformer is NOT required for inverter/variable speed outdoor communication units. Additional transformer IS required for 2-stage outdoor communication units.) Do NOT connect R and C between the Indoor Unit and Outdoor Unit. See below.
INSTALLING THE ADDITIONAL TRANSFORMER IS NOT REQUIRED FOR INVERTER/VARIABLE SPEED OUTDOOR COMMUNICATING UNITS. AN ADDITIONAL TRANSFORMER IS REQUIRED FOR 2-STAGE OUTDOOR COMMUNICATING UNITS.
Power optional accessories
If no wireless accessories are used, skip to Section 3.
RedLINK™ Internet Gateway
The Honeywell RedLINK Internet Gateway gives your customers remote access to home climate-control systems from any location with Internet access. Using a Web browser, users can review and adjust the indoor temperature, system mode, and other settings. The Gateway can also send alerts to as many as 6 email addresses if a problem occurs.
TrueSTEAM
Connect the ABCD terminals between TrueSTEAM and the THM4000 Wireless Adapter. Adjust the DIP Switches on TrueSTEAM as follows when using the Wireless Adapter:
Entry/Exit Remote or Vent Boost Remote
Initial Power Up
The thermostat will identify the number of units connected and then prompt the installer to select the equipment (Furnace or Air Handler, Heat Pump or Air Conditioner) installed. Once configured, the installer will be prompted to add RedLINK accessories (page 9) and setup the Installer Options (page 12)
Link optional accessories to a wireless network
If you need to return to the “Add Device” screen to add devices later, press MENU and scroll down to press INSTALLER OPTIONS. Enter the date code (password) when prompted. The date code is printed on the back of the thermostat; or press MENU > EQUIPMENT STATUS to find the date code. After you enter the password, scroll down to press WIRELESS DEVICE MANAGER and then select ADD DEVICE.
While the Add Device screen is displayed on the thermostat, press and release the CONNECT button on each wireless device, as described below. Accessories need to be at least 2 feet away from the thermostat during the linking process. Press DONE after all devices have been linked
Wireless outdoor sensor
When power is interrupted, the equipment and the RedLINK accessories will automatically restore communication after power resumes.
If you have both a wired and wireless outdoor sensor installed, the thermostat displays the reading from the wireless outdoor sensor. Press and release CONNECT. After a short delay, the thermostat will display “Wireless Outdoor Sensor added” on the Add Device screen.
Wireless indoor sensor
The thermostat can use up to 6 optional wireless sensors. Press and release CONNECT. After a short delay, the status light will glow green for 15 seconds.If the status light turns red, the sensor did not link with the thermostat. Battery level indicators (when batteries are inserted)
Battery level indicators (during use)
Portable Comfort Control
Press CONNECT on the Portable Comfort Control display screen. Press DONE when the screen displays “Connected.” Press NO at the next screen to save and exit. (Or press YES to link another thermostat.)
Error messages:
The linking procedure will time out if there is no keypress for 30 minutes. To begin again, press and hold in the lower right corner of the screen until the display changes (about 3 seconds).
RedLINK Internet Gateway
Press and release the button on the bottom of the Internet Gateway. After a short delay, the RedLINK status light will glow steady green.
The Internet Gateway must be registered online before use at www.mytotalconnectcomfort.com. Enter the MAC ID and MAC CRC numbers located on the bottom of the Internet Gateway. For additional information, see the instructions provided with the device.
TrueSTEAM
Press and release the CONNECT button on the THM4000 Wireless Adapter. After a short delay, the CONNECTED status light will glow
steady green.
Entry/Exit Remote or Vent Boost Remote
Press and release CONNECT button
[If no sensors are used, skip to Section 6.]
To install an outdoor air sensor
To install an indoor air sensor
Do not install the indoor air sensor where it can be affected by:
To install Entry/Exit Remote or Vent Boost Remote
Mounting the remote is optional.
Installer options (ISU)
To set up the thermostat, press MENU and scroll down to press INSTALLER OPTIONS. Enter the date code (password) when prompted. The date code is printed on the back of the thermostat; or press MENU > EQUIPMENT STATUS to find the date code. After you enter the password, press CREATE SETUP to set up the thermostat. A brief summary of installer options follows. You can download a complete list of all options at customer.honeywell.com.
TIP: You can use the thermostat USB port to download all system configuration and installer options, including your company name and contact information. You can upload this data to each thermostat you install, to save time.
R: Residential C: Commercial B: Both
Installer options (ISU)
ComfortNet User Menu
Press MENU > COMFORTNET USER MENU Press MENU and scroll down to press COMFORTNET USER MENU. Enter the date code (password) when prompted. The date code is printed on the back of the thermostat; or press MENU > EQUIPMENT STATUS to find the date code. Each piece of equipment is divided into categories which may include: (Not all menu options listed here may be available. Additional menu options may be displayed on the thermostat.)
See the equipment installer manual for specific submenu options available within each category.
To change installer setup (ISU) information, see pages 12-13. Wiring TrueSTEAM to IFC
Wiring TrueEASE to IFC
Heat pump with outdoor temperature lockouts
Outdoor temperature lockouts are optional. See Installer Setup options (ISU 3120).
No backup heat unless indoor temperature drops to the selected Backup Heat Differential setting, or Backup Heat Upstage Timer expires. The heat pump stays ON when the backup heat turns on.
Fossil Fuel – Backup heat NOT allowed to run with heat pump
No backup heat unless indoor temperature drops to the selected Backup Heat Differential setting, or Backup Heat Upstage Timer expires. The heat pump turns OFF when the backup heat turns on.
Basic and Advanced Temperature Control Options (ISU 3010)
Basic Options: The Installer Setup displays basic temperature control options which include Backup Heat Differential, Backup Heat Upstage Timer and Outdoor Temperature Lockouts. Note: Outdoor Temperature Lockouts only apply to Heat Pump applications.
Advanced Options: The Installer Setup displays both Basic and Advanced Options. Advanced temperature control options include Finish With High Cool Stage, Finish With High Heat Stage, Temperature Differential settings between all stages and Cycle Rate settings per stage.
During a programmed recovery (or when the temperature setpoint is changed by the user), the thermostat waits to turn on the backup heat depending on system performance, load conditions and how many degrees the temperature setpoint is changed. Backup heat will be used ONLY when the temperature is not rising quickly enough to reach the setpoint in a reasonable time. If the backup heat was used in the last 2 hours because the heat pump was not able to maintain the setpoint, the thermostat may turn on the backup heat earlier when the user raises the setpoint. Finish With High Heat or Cool Stage – When a multi-stage heating or cooling system is used, this feature keeps the high stage
of the heating or cooling equipment running until the desired setpoint is reached.
Basic and Advanced Temperature Control Options (ISU 3010) A backup heat differential and backup heat upstage timer can be set on heat pump systems with backup heat. See installer setup options (ISU 3090-3110).
Normal operation
When the Backup Heat Differential is set to Comfort, the thermostat uses backup heat as needed to keep the indoor temperature within 1° F (0.5° C) of the setpoint. When the Backup Heat Differential is set to 2° F or higher, backup heat is not used unless the indoor temperature drops to the Backup Heat Differential setting or the Backup Heat Upstage Timer expires, whichever occurs first. The upstage timer starts
when the highest stage of the previous equipment type turns on.
Manual temperature change
When the Backup Heat Differential is set to Comfort, the thermostat uses backup heat as needed to keep the indoor temperature within 1° F (0.5° C) of the setpoint. When the Backup Heat Differential is set to 2° F or higher, if the heat pump is making progress as expected, backup heat will not be used to reach the new setpoint. Set to a higher number to use less backup heat (a greater difference between the current indoor temperature and the new setpoint is required to turn on backup heat). See notes below.
Programmed recovery
If the heat pump is making progress as expected, backup heat will not be used to reach the setpoint of the next program period. Backup heat is always restricted during a programmed recovery when the Adaptive Intelligent Recovery feature is used. See note below. During a programmed recovery (or when the temperature setpoint is changed by the user), the thermostat waits to turn on the
backup heat depending on system performance, load conditions and how many degrees the temperature setpoint is changed. Backup heat will be used ONLY when the temperature is not rising quickly enough to reach the setpoint in a reasonable time. If the backup heat was used in the last 2 hours because the heat pump was not able to maintain the setpoint, the thermostat may turn on the backup heat earlier when the user raises the setpoint.
The thermostat reads the indoor humidity level and allows the user to set a humidification setting with or without window protection.
Window Protection
Window Protection limits the amount of humidity to prevent frost or condensation on windows. Window Protection (ISU 8050) requires an outdoor sensor. The maximum humidity level that is allowed (“Window Limit”) is displayed on the Humidification Settings screen. The thermostat prevents frost or condensation o windows by not allowing the humidity to go above the Window Limit when it is controlling the humidifier. This helps inform the user as to why their humidity setting might not be reached at times. The Window The limit is based on the current outdoor temperature and the user’s window protection setting. If Window Protection is turned Off, the thermostat controls the humidity level to the user’s desired humidity setting. Frost or condensation may appear on windows. To see all humidification options, press MENU > INSTALLER OPTIONS > VIEW/EDIT CURRENT SETUP > HUMIDIFICATION.
Dehumidification – Residential
The thermostat reads the indoor humidity level and allows the user to set a dehumidification setting. When set up for dehumidification using the cooling system, an overcooling limit can be set from 0 F to 3 F (ISU 9070). The thermostat uses the cooling system to reduce humidity by lowering the temperature up to 3 F below the current cool setpoint until the desired humidity level is reached. To see all dehumidification options, press MENU > INSTALLER OPTIONS > VIEW/EDIT CURRENT SETUP DEHUMIDIFICATION.
Dehumidification – Commercial
The thermostat reads the indoor humidity level and allows the user to set a dehumidification setting Dehumidification using the cooling system has the following methods of dehumidification control (ISU 9080):
Basic: This option uses the cooling system to reach the desired humidity level. Minimum On Time and High Humidity Comfort Reset is not used with this method. This option should only be used if the equipment can lower the fan speed in a call for dehumidification.
Minimum on Time (ISU 9090): This option ensures that the compressor runs long enough to effectively reduce humidity when the cooling equipment is cycled on. The compressor will run for the minimum “on time” you set until the desired humidity level is reached.
High Humidity Comfort Reset (ISU 9100): This option uses the cooling system to lower the temperature up to 5 F below the current cool setpoint until the desired humidity is reached. The high humidity comfort range is from 1 to 5 F.
High Humidity Comfort Reset with Minimum On Time (ISU 9090 and ISU9100)
This method uses both options above to reduce humidity while maintaining a comfortable temperature.To see all dehumidification options, press MENU > INSTALLER OPTIONS > VIEW/EDIT CURRENT SETUP > DEHUMIDIFICATION
Dehumidification Away Mode protects the home when unoccupied for long periods of time during hot and humid weather by maintaining the desired humidity and temperature settings. To start Dehumidification Away Mode, press Menu, then press Dehumidification Away Mode. The thermostat automatically follows the settings that are set by the dealer during installer setup. Press Cancel to end Dehumidification Away
Mode.
Southern Dehumidification Away Mode Options: (ISU 9180 to 9200)
Ventilation
Ventilation Control Method (ISU 10050) The thermostat can control the fan to meet either ASHRAE or Percent On Time settings. If the required ventilation has not been achieved for ASHRAE or Percent OnThe time during calls for heat and cool, the thermostat will force the fan on.
ASHRAE: The thermostat operates the fan to meet the ASHRAE 62.2 ventilation standard based on CFM, number of bedrooms, and square footage of the house. ASHRAE 62.2 can only be met if the fan is running. If the fan is off for any reason (set up to turn Off during Sleep period, turned off by the user etc.), ASHRAE 62.2 is not met during those times.
Percent On Time: The thermostat operates the fan based on a percentage entered in the installer setup (ISU 10120). For example, if Percent On Time is set to 50%, the fan will run at random times during a 1 hour period until it reaches a 50% run time (approximately 30 minutes). Options 10% to 100%. To see all ventilation options, press MENU > INSTALLER OPTIONS > VIEW/EDIT CURRENT SETUP >
VENTILATION
Temperature control
The thermostat can be set to respond to its internal temperature sensor, or to an optional remote indoor sensor. If multiple sensors are used, the thermostat will respond to an average of temperatures detected at each sensor.
Humidification control
If optional remote indoor sensors are installed, you can choose which sensor you want to use for humidification control. You can use a different sensor for dehumidification.
Dehumidification control
If optional remote indoor sensors are installed, you can choose which sensor you want to use for dehumidification control. For example, you
can use one sensor for humidification control, and another for dehumidification
Alerts Log
MENU > INSTALLER OPTIONS > DATA LOGS > ALERTS LOG
The thermostat saves the most recent 25 alerts. It records the date, time, alert status
(snoozed, dismissed, recovered), and diagnostic information to help you identify and
correct problems.
User Interactions Log
MENU > INSTALLER OPTIONS > DATA LOGS > USER INTERACTIONS LOG Check this log to find out if the problem was caused by an accidental user error. The log shows most changes made to thermostat settings, by time and date, and describes what change was made. The thermostat records the most recent 250 changes. You can quickly search by date and time, or by function. This feature can be turned off if necessary so that no user interactions are recorded.
Examples:
Replacing system components
Follow the steps below to disconnect the thermostat and RedLINK accessories.
To replace a thermostat
At the Portable Comfort Control
To remove accessories from a thermostat At the thermostat
Operating Ambient Temperature
Operating Relative Humidity
Electrical Ratings
Item Honeywell Part Number
FCC Compliance Statement (Part 15.19) (USA only) This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
FCC Warning (Part 15.21) (USA only)
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the
equipment.
FCC Interference Statement (Part 15.105 (b)) (USA only)
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment
generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one of the following measures:
Thermostats and outdoor sensor
To comply with FCC and Industry Canada RF exposure limits for general population/ uncontrolled exposure, the antenna(s) used for these transmitters must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter.
Portable Comfort Control
This portable transmitter with its antenna complies with FCC and Industry Canada RF exposure limits for general population/ uncontrolled exposure. This device must not be co-located or operating in conjunction with any other antenna or transmitter.
Section 7.1.2 of RSS-GEN
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication.
Section 7.1.3 of RSS-GEN
Operation is subject to the following two conditions:
Need Help?
For assistance please visit www.ComfortNet1.com, or call toll-free: (888) 593-9988 Honeywell International Inc. 1985 Douglas Drive North
Download Manual:
ComfortNet CTK04 Communicating Thermostat System Installation Guide
OTHER MANUALS:
ComfortNet CTK04 Programmable Thermostat Product Specification Guide
ComfortNet CTK04 Programmable Thermostat User Manual
ComfortNet CTK04 Communicating Thermostat System Installation Guide
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