ComfortNET ComfortNet CTK03 User manual

ComfortNet™ CTK03 Communicating Thermostat
With wireless accessories
System
Installation
Guide
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.
Installation guide for:
Quick start guide
• ComfortNetCTK03Communicating
Thermostat
• PortableComfortControl
• WirelessOutdoorSensor
• WirelessIndoorSensor
• RedLINK™InternetGateway
• Entry/ExitRemote
• VentBoostRemote
1Install thermostat ..........................................................page 4
2Power optional accessories...................................................7
3Setup thermostat ...................................................................8
4Link optional accessories ......................................................9
5Mount optional accessories.................................................11
6Installer options ...................................................................12
ComfortNet™ User Menu ....................................................13
Wiring guides.......................................................................19
Key features....................................................................20-26
Device replacement and specifications ..........................26-27
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.
I/O-CHTSTAT03
69-2688-03

System Installation Guide
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69-2688—03 I/O-CHTSTAT03
The ComfortNet advantage
ThepremiumHoneywellComfortNet™controlsystemiseasytouse,energy-
efficient,reliableandensuresthesystemissetupproperly.Advancedoperating
algorithmsbuiltintothecontroldeliversefficientequipmentoperationwhilepro-
vidingoptimal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
IncreaseyourcontentandprofitperjobbyincludingHoneywellRedLINK™
accessoriesthatmeetyourcustomerscomfortandconvenienceneeds.RedLINK
accessoriesincludetheWirelessOutdoorSensor,PortableComfortControl
(PCC),RedLINKInternetGateway,WirelessIndoorSensor,TrueSTEAM™humidi-
fierwithWirelessAdapter,VentBoostRemoteandEntry/ExitRemote.
Customizable Service Reminders
Setupto10servicereminders.Choosefromthepre-setoptionsorcustomize
yourown.Remindersbasedondate,outdoortemperatureoradrycontactinput
willalertcustomerswithinstructionstocontactyouforassistance.
User Interactions Log
Theinteractionlogstoreshistoryofthermostatsettingchangesincludingtem-
perature,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scheduling.
USB Port for Quick Installer Setup
SavetimebyusingaUSBsticktouploadinstallersettingsandservicereminders
in one simple step.
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condi-
tionhumiditylevelsinseparatespaces.

CTK03 ComfortNet™ Communicating Thermostat
3I/O-CHTSTAT03 69-2688—03
Installation
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:
• AcommunicatingairhandlermatchedwithacommunicatingoutdoorAC
condensing unit.
• Acommunicatingairhandlermatchedwithacommunicatingoutdoorheat
pump unit.
• AcommunicatingfurnacematchedwithacommunicatingoutdoorAC
condensing unit.
• Acommunicatingfurnacematchedwithacommunicatingoutdoorheat
pump unit.
• Acommunicatingfurnacematchedwithanon-communicatingsinglestage
ACcondensingunit.
Installing Thermostat
1. RemoveandinventoryallComfortNetcomponents.TheboxcontainstheComfortNetCTK03
communicatingthermostat,lithiumcoincellbattery,wallmountingscrewsandanchors,
systeminstallationguide,operatingmanual,transformerandawiringsetthatincludestwo
terminalblocksandwires.
2. Carefullyseparatethethermostatbodyfromthethermostatbase.
3. Placebaseatinstallationlocationandmarkmountingholelocationsonwallusingbaseasa
template.
4. Drill mounting holes.
5. Attachbasefirmlytowallusingtwomountingscrews.Levelingisforappearanceonlyand
willnotaffectthermostatoperation.
6. Connectwirestoterminalblockonbase.
7. 18AWGsolidwireisrecommended.
8. Pushexcesswireintowallandplugholewithafireresistantmaterial(suchasfiberglass
insulation)topreventdraftsfromaffectingthermostatoperation.
9. Insertcoincellbatteryinthebackofthethermostat.
10. Carefullylineupthethermostatwiththebaseandsnapintoplace.
HIGH
VOLTAGE
TRANSFORMER LOW
VOLTAGE CONNECTED
TO R AND C
TERMINALS
CONNECT 2-WIRES TO
INDOOR UNIT
REMOVE AND INVENTORY ALL
COMFORTNET™COMPONENTS
REMOVE OUTDOOR UNIT
COVER AND 7-PIN
CONNECTOR
NOTE: CONTAINS THE CTK03 THERMOSTAT, LITHIUM COIN CELL BATTERY,
WALL MOUNTING SCREWS AND ANCHORS, SYSTEM INSTALLATION GUIDE,
OPERATING MANUAL, TRANSFORMER AND A WIRING SET THAT INCLUDES
TWO TERMINAL BLOCKS AND WIRES.
P/N F0430675005
INSTALL HVAC COMPONENTS
GAS
FURNACE
AIR
HANDLER
TERMINALS 1 & 2 ARE
COMMUNICATIONS
WIRES. THEY SHOULD
NEVER BE CONNECTED
TO THE 24 VAC R&C
POWER SUPPLY
TERMINALS.
CONNECT 4-WIRES
FROM STAT AND
2 WIRES FROM
OUTDOOR UNIT
P/N F0430679005
P/N F0430673005
CONNECT TO THE OUTDOOR UNIT
2-WIRE/TRANSFORMER
CONNECTION
CONNECT HIGH VOLTAGE TRANSFORMER LEADS TO L1
AND L2 MALE SPADE TERMINALS ON CIRCUIT BOARD.
DO NOT CONNECT R AND C BETWEEN THE INDOOR UNIT
AND OUTDOOR UNIT. SEE PAGE 5.
INSTALL THERMOSTAT ON INTERIOR WALL
NOTE: THERMOSTAT WILL
AUTOMATICALLY CONFIGURE
TO THE SYSTEM ONCE HIGH
VOLTAGE POWER IS
APPLIED TO THE
INDOOR AND
OUTDOOR
EQUIPMENT.
M33487
1REMOVE 9-PIN CONNECTOR
FROM FURNACE OR AIR
HANDLER CONTROL
23
4
56
AIR CONDITIONER
OR HEAT PUMP
AIR CONDITIONER
OR HEAT PUMP
TRANSFORMER
LOW (24 VAC)
VOLTAGE

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69-2688—03 I/O-CHTSTAT03
Install thermostat
1
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:
• 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.
Terminal Functions:
1-Data1
2-Data2
R-24voltpower
C-24voltcommon
Wire Gauge:
18gaugewireisrecommended.MaximumwiredistancebetweentheComfortNet
thermostatandtheIFCshouldnotexceed100feetusing18gaugewire.
MCR29241
MCR33170
1
2
R
C
MCR33171
1
2
R
C

CTK03 ComfortNet™ Communicating Thermostat
5I/O-CHTSTAT03 69-2688—03
Install thermostat
1
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.DoNOT
connectRandCbetweentheIndoorUnitandOutdoorUnit.Seebelow.
Note:DIPswitch#13ontheequipmentneedstobesettoOFF.Defaultsettingis
OFF.
CTK03
INDOOR
BOARD TERMINAL
CONNECTIONS
R
C
1
2
24VAC (HOT)
24VAC
(COMMON)
DATA 1
DATA 2
L1
L2
24VAC 240V
OUTDOOR
BOARD TERMINAL
CONNECTIONS
OUTDOOR
TRANSFORMER
R
C
1
2
R
C
1
2
M33168A

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69-2688—03 I/O-CHTSTAT03
M32940
[If no wireless accessories are used, skip to Section 3.]
Portable Comfort Control
Install 2 fresh AAA alkaline batteries Install 3 fresh AA alkaline batteries
Outdoor air sensor Indoor air sensor
Install 2 fresh AA lithium batteries
Power optional accessories
2
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indoortemperature,
systemmodeandothersettings.TheGatewaycanalsosendalertstoasmany
as6emailaddressesifaproblemoccurs.
RedLINK™Internet Gateway
Connect power cord to
an electrical outlet not
controlled by a wall switch
Connect RedLINK Gateway to a
router or modem with Ethernet
cable (RJ45).
MCR32937 MCR32938 MCR32939

CTK03 ComfortNet™ Communicating Thermostat
7I/O-CHTSTAT03 69-2688—03
Power optional accessories
2
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:
DIP3:UP
DIP4:UP
DIP5:DOWN THM4000R1000
Tr ueSTEAM
MCR31476
6
543
2
ON
OFF
1
Entry/Exit Remote or Vent Boost Remote
1 Removethecover.
2 InserttheCR2450coincellbattery(included)
intotheslotatthebottomoftheremote.See
polaritymarkingontheremote.
3 TheLEDwillbrieflyflashgreen.Ifitflashesred,
batteryisnotgood.
MCR33269

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69-2688—03 I/O-CHTSTAT03
Setup thermostat
3
Initial Power Up
1 TurnonACpowertothesystem.
2 SelectLanguage.PressNext.
3 SelectApplication(Residentialor
Commercial).PressNext.
Thethermostatwillautomaticallyiden-
tifytheComfortNetcommunicating
equipmentinstalledandthenyouwill
bepromptedtoaddRedLINKacces-
sories(page9)andsetuptheInstaller
Options(page12).
4 EnteraDeviceName.PressNext.

CTK03 ComfortNet™ Communicating Thermostat
9I/O-CHTSTAT03 69-2688—03
MCR32935
MCR32934
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.
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.
MCR28847A
Link optional accessories to wireless network
4
Wireless outdoor sensor Wireless indoor sensor
Press and release CONNECT. After
a short delay the thermostat will
display "Wireless Outdoor Sensor
added" on the Add Device screen.
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.
In normal operation, this light
remains off. If it begins flashing
red, batteries are low (power will
be depleted after 2-3 weeks).
Press DONE after all devices have been linked
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.

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69-2688—03 I/O-CHTSTAT03
Entry/Exit Remote or Vent Boost Remote
Press and release CONNECT button.
TrueSTEAM
Press and release the CONNECT button on the THM4000 Wireless Adapter. After a short delay, the CONNECTED status light will glow
steady green..
Link optional accessories to wireless network
4
MCR32943
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
instructions provided with the device.
MCR32942
CONNECT
WIRELESS SETUP
Portable Comfort Control
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).
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:
E1 29 Incompatible device cannot be connected.
E1 34 Low RF signal. Move device to a different location and try again.
E1 38 Make sure the thermostat is in Wireless Setup mode,
and the Portable Comfort Control is at least 2 feet away (600 mm).
MCR33096
After a short delay, the status light will glow
green for 15 seconds. If the status light
turns red, the remote did not link with the
thermostat for the connection process.

CTK03 ComfortNet™ Communicating Thermostat
11 I/O-CHTSTAT03 69-2688—03
Mount optional accessories
1 Mountthesensoronavertical
exteriorwall,atleast6inchesbelow
anyoverhang.Choosealocation
protected from direct sunlight.
2 Placesensorsecurelyinbracket,
facingawayfromwall.
5
M28491
M28849A
[If no sensors are used, skip to Section 6.]
To install outdoor air sensor
To install indoor air sensor
To install Entry/Exit Remote or Vent Boost Remote
1 Removethewallplateandmountit4
to6feetabovetheflooronaninterior
wall.Drill3/16-inchholesfordrywall,
7/32-inchforplaster.
2 Attachsensorsecurelytowallplateas
shown.
Mounting the remote is optional.
1 Removethefrontcoverfromthe
remote.
2 Useprovidedscrewsandwall
anchors to fasten the remote to the
wall.Drill3/16-inchholesfordrywall,
7/32-inchforplaster.
3 Replacethecoverontheremote.
M32936A
M33095
Do not install the indoor air sensor where it can be affected by:
• 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

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69-2688—03 I/O-CHTSTAT03
Installer options (ISU)
6
Create Setup: Press CREATE SETUP to set all system settings one
by one.
View/Edit Current Setup: Press VIEW/EDIT CURRENT SETUP to
select a specific function and make quick changes.
Installer Test: Press INSTALLER TEST to quickly determine if the
heat, cool, fan and thermostat are operating properly. Minimum off
timers are ignored during the test.
Data Logs: Press DATA LOGStoviewtheAlertsLogandUser
Interactions Log.
Wireless Device Manager: Press WIRELESS DEVICE MANAGER
to add or remove wireless accessories.
Advanced Options: Press ADVANCED OPTIONS to setup the
thermostatusingaUSBdeviceortorestorethethermostattothe
factory default settings.
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.
Tosetup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 setup the thermostat.
Abriefsummaryofinstalleroptionsfollows.Youcandownloadacompletelistof
alloptionsathttp://customer.honeywell.com.
1000 Language B
1010 Residential/Commercial B
1030 Device Name B
1030 Device Name on Home Screen C
1040 Programmable/Non-programmable B
1050 Fahrenheit/Celsius B
1060 Outdoor Air Sensor B
2000 Heating System Type B
2010 Heating Equipment Type B
2070 Heat Stages B
2070 Cool/Compressor Stages B
2070 BackupHeatStages B
2180 BackupHeatType B
3000 Manual/Auto Changeover B
3000 Auto Changeover Deadband B
3010 Temperature Control Options B
3020 Finish With High Cool Stage B
3021 Finish With High Heat Stage B
3030 Staging Control - Cool Differentials B
3050-3060 Staging Control - Heat Differentials B
3090 StagingControl-BackupHeatDifferentials B
3110 BackupHeatUpstageTimer B
3120 Outdoor Compressor Lockout B
3120 OutdoorBackupHeatLockout B
3140 Cool/Compressor Cycles Per Hour B
3150 Heat Cycles Per Hour B
3160 BackupHeatCyclesPerHour B
3170-3190 Cooling Derivative, Integral, Throttling range C
3200-3220 Heating Derivative, Integral, Throttling range C
3240 Minimum Compressor Off Time B
3260 Extended Fan Run Time in Cool B
3260 Extended Fan Run Time in Heat B
4000 Number of Schedule Periods B
4010 Pre-occupancy Purge Duration C
4020 Override: Standard or Initiate Occupancy C
4030 Override Duration C
4050 Minimum Recovery Settings - Heat C
4060 Maximum Recovery Settings - Heat C
4070 Minimum Recovery Settings - Cool C
4080 Maximum Recovery Settings - Cool C
4090 Adaptive Intelligent Recovery R
4100 Minimum Cool Setpoint B
4100 Maximum Heat Setpoint B
4110 Keypad Lockout B
4120 Entry/Exit Remote -
Home/Occupied Cool Setpoint B
4120 Entry/Exit Remote -
Home/Occupied Heat Setpoint B
ISU Function ISU Function
R: Residential C: Commercial B:Both

CTK03 ComfortNet™ Communicating Thermostat
13 I/O-CHTSTAT03 69-2688—03
ComfortNet User Menu
PressMENU > COMFORTNET USER MENU
Additionalequipmentinformationisfoundinthe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.
Afteryouenterthepassword,selectthe
equipmenttype(furnace,airhandler,
airconditioner,heatpump)toviewthe
specifications.
Eachequipmenttypeisdividedintocategorieswhichinclude:
4130 Entry/Exit Remote -
Away/UnoccupiedCoolSetpoint B
4130 Entry/Exit Remote -
Away/UnoccupiedHeatSetpoint B
4140 Entry/Exit Remote -
Vacation/Holiday Cool Setpoint B
4140 Entry/Exit Remote -
Vacation/Holiday Heat Setpoint B
5040 IndoorSensorsUsedforTemperatureControl B
7000 Filter Type B
7020 Number of Air Filters B
7110 Air Filter Replacement Reminder B
7110 Air Filter 2 Replacement Reminder B
7120 EAC Cell Cleaning Reminder B
7120 EAC Pre-Filter Cleaning Reminder B
7120 EAC Post-Filter Replacement Reminder B
8000 Humidifier Type B
8010 IndoorSensorUsedforHumidificationControl B
8050 Humidification - Window Protection B
8060 System Modes Allowing Humidification B
8070 Humidification Control B
8100 Clean Tank / Water Filter Replacement Reminder B
8100 Humidifier Pad Replacement Reminder B
9000 Dehumidification Equipment B
9010 IndoorSensorUsedforDehumidificationControl B
9020 Humidity Sensor Displayed on the Home Screen B
9070 Dehumidification - Overcooling Limit R
9080 Dehumidification Control C
9090 Dehumidification Minimum On Time C
9100 High Humidity Comfort Reset Setting C
9180 Dehumidification Away Mode B
9190 Dehumidification Away Mode - Fan Control B
9200 Dehumidification Away Mode -
Low Limit Temperature B
9200 Dehumidification Away Mode -
Temperature Setting B
9200 Dehumidification Away Mode -
Dehumidification Setting B
9210 Dehumidifier Filter Replacement Reminder B
10000 Ventilation Type B
10050 Ventilation Control Method B
10090 NumberofBedrooms R
10090 Size of House R
10100 Enter Equipment Ventilation Rate R
10120 Ventilation Percent On Time B
10170 Ventilator Filter Cleaning Reminder B
11000 NumberofUVDevices B
11050 UVBulbReplacementReminder B
11050 UVBulb2ReplacementReminder B
12000 Installer Custom Reminders B
14000 Clock Format B
14010 Daylight Saving Time B
14020 Indoor Temperature Display Offset B
14020 Indoor Humidity Display Offset B
15000-15020 Dealer name, phone, email, website, message B
Installer options (ISU)
6
ISU Function ISU Function
• Configuration: Provides information regarding the setup of the equipment. An example of configuration data is the number
of cooling stages for an AC condensing unit.
• Diagnostics: Provides a fault history of the equipment and allows the installer to clear the fault history.
• Identification: Provides the model and serial number of the equipment and software revision information.
• Sensors: Provides the sensor data of the equipment. In some instances, it may allow the installer to setup or turn off a
sensor.
• Setup: Allows the installer to change the settings of the equipment.
• Status: Provides the current status of the equipment.
Thefollowingpagesprovidesubmenusoftheabovecategoriesforeach
equipmenttypethatmaybeusedwiththisthermostat.

System Installation Guide
14
69-2688—03 I/O-CHTSTAT03
Furnace User Menus
Configuration (CONFIG)
Sub-menu Item Indication (for Display Only; not User Modifiable)
Number of Heat Stages (HT STG) Displays the number of furnace heating stages
Input Rate (BTU/HR) Displays the furnace input rate in kBtu/hr
Motor HP (1/2, 3/4 or 1 MTR HP) Displays the furnace indoor blower motor horse power
Diagnostics (DIAG)
Sub-menu Item
Indication/User Modifiable
Options Comments
Fault 1 (FAULT #1) Most recent furnace fault For display only
Fault 2 (FAULT #2) Next most recent furnace fault For display only
Fault 3 (FAULT #3) Next most recent furnace fault For display only
Fault 4 (FAULT #4) Next most recent furnace fault For display only
Fault 5 (FAULT #5) Next most recent furnace fault For display only
Fault 6 (FAULT #6) Least recent furnace fault For display only
Clear Fault History
(CLEAR)
NO or YES Selecting “YES” clears the fault history
NOTE:Consecutivelyrepeatedfaultsareshownamaximumof3times.
Identification (IDENT)
Sub-menu Item
Indication (for Display Only; not User
Modifiable)
Model Number (MOD NUM) Displays the furnace model number
Serial Number (SER NUM) Displays the furnace serial number (Optional)
Software (SOFTWARE) Displays application software revision

CTK03 ComfortNet™ Communicating Thermostat
15 I/O-CHTSTAT03 69-2688—03
Setup (SETUP)
Sub-menu Item User Modifiable Options Comments
Heat Airflow Trim
(HT TRM)
-10% to +10% in 2% Increments
(Default 0%)
Trims the heating airflow by the
selected amount.
Heat ON Delay
(HT ON)
5, 10, 15, 20, 25, or 30 seconds
(Default 20)
Selects the indoor blower heat on
delay
Heat OFF Delay
(HT OFF)
30, 60, 90, 120, 150, or 180 seconds
(Default 120)
Selects the indoor blower heat off
delay
Heating Air Flow
(HT ADJ)
1, 2, 3, 4 (Default 2) Selects the nominal heating airflow
Status (STATUS)
Sub-menu Item Indication (for Display Only; not User Modifiable)
Mode (MODE) Displays the current furnace operating mode
CFM (CFM) Displays the airflow for the current operating mode
Non-Comm (Non-COMM applies only to a communicating furnace matched with a non-
communicating AC)
Sub-menu Item User Modifiable Options Comments
Cool Airflow (CL
CFM)
18, 24, 30, 36, 42, 48, or
60 (Default 18)
Selects the airflow for the non-communicating
1-stage AC unit
Cool Airflow Trim
(CL TRM)
-10% to +10% in 2%
Increments (Default 0%)
Selects the airflow trim amount for the
noncommunicating 1-stage AC unit
Cool Airflow
Profile (CL PRFL)
A, B, C, or D (Default A) Selects the airflow profile for the
noncommunicating 1-stage AC unit
Cool ON Delay
(CL ON)
5, 10, 20, or 30 seconds
(Default 5)
Selects the indoor blower on delay for the
noncommunicating 1-stage AC unit
Cool OFF Delay
(CL OFF)
30, 60, 90, or 120 seconds
(Default 30)
Selects the indoor blower off delay for the
noncommunicating 1-stage AC unit

System Installation Guide
16
69-2688—03 I/O-CHTSTAT03
Air Handler User Menus
Configuration (CONFIG)
Sub-menu Item Indication (for Display Only; not User Modifiable)
Electric Heat Size (HTR KW) Displays the size, in kW, of the selected electric heaters
Motor HP (1/2, 3/4 or 1 MTR HP) Displays the furnace indoor blower motor horse power
Heat ON Delay (HT ON) Displays the electric heat indoor blower on delay
Heat OFF Delay (HT OFF) Displays the electric heat indoor blower off delay
Diagnostics (DIAG)
Sub-menu Item Indication/User Modifiable Options Comments
Fault 1 (FAULT #1) Most recent air handler fault For display only
Fault 2 (FAULT #2) Next most recent air handler fault For display only
Fault 3 (FAULT #3) Next most recent air handler fault For display only
Fault 4 (FAULT #4) Next most recent air handler fault For display only
Fault 5 (FAULT #5) Next most recent air handler fault For display only
Fault 6 (FAULT #6) Least recent air handler fault For display only
Clear Fault History
(CLEAR)
NO or YES Selecting “YES” clears
the fault history
NOTE:Consecutivelyrepeatedfaultsareshownamaximumof3times.
Identification (IDENT)
Sub-menu Item Indication (for Display Only; not User Modifiable)
Model Number (MOD NUM) Displays the air handler model number
Serial Number (SER NUM) Displays the air handler serial number (Optional)
Software (SOFTWARE) Displays application software revision
Setup (SETUP)
Sub-menu Item User Modifiable Options Comments
Heat Airflow Trim
(HT TRM)
-10% to +10% in 2% Increments
(Default 0%)
Trims the electric heating airflow
by the selected amount.
Status (STATUS)
Sub-menu Item Indication (for Display Only; not User Modifiable)
Mode (MODE) Displays the current air handler operating mode
CFM (CFM) Displays the airflow for the current operating mode

CTK03 ComfortNet™ Communicating Thermostat
17 I/O-CHTSTAT03 69-2688—03
Heat Pump/Air Conditioner User Menus
Configuration (CONFIG)
Sub-menu Item Indication (for Display Only; not User Modifiable)
AC Tonnage (TONS) Displays the air conditioning tonnage; applies to AC and HP.
Number of AC Stages
(CL STG)
Displays the number of air conditioning stages; applies to AC and HP.
Number of HP Stages
(HT STG)
Displays the number of heat pump stages; applies to HP only.
Diagnostics (DIAG)
Sub-menu Item Indication/User Modifiable Options Comments
Fault 1 (FAULT #1) Most recent AC/HP fault For display only
Fault 2 (FAULT #2) Next most recent AC/HP fault For display only
Fault 3 (FAULT #3) Next most recent AC/HP fault For display only
Fault 4 (FAULT #4) Next most recent AC/HP fault For display only
Fault 5 (FAULT #5) Next most recent AC/HP fault For display only
Fault 6 (FAULT #6) Least recent AC/HP fault For display only
Clear Fault History
(CLEAR)
NO or YES Selecting “YES” clears the fault
history
NOTE:Consecutivelyrepeatedfaultsareshownamaximumof3times.
Identification (IDENT)
Sub-menu Item Indication (for Display Only; not User Modifiable)
Model Number (MOD NUM) Displays the air conditioner or heat pump model number
Serial Number (SER NUM) Displays the air conditioner or heat pump serial number
(Optional)
Software (SOFTWARE) Displays application software revision
Sensors (SENSORS)
Sub-menu Item
Indication/User
Modifiable Options Comments
Outdoor Air Temperature
(AIR TMP)
Displays the outdoor air
temperature
Sensor may or may not be available on
an air conditioner. Check air conditioner
instructions for details.
Outdoor Coil Temperature
(COIL TMP)
Displays the outdoor coil
temperature
Applies for heat pump operation.

System Installation Guide
18
69-2688—03 I/O-CHTSTAT03
Status (STATUS)
Sub-menu Item Indication (for Display Only; not User Modifiable)
Mode (MODE) Displays the current air handler operating mode
CFM (CFM) Displays the airflow for the current operating mode
Cool Set-up (SETUP)
Sub-menu
Item User Modifiable
Options Comments
Cool Airflow Trim
(CL TRM)
-10% to +10% in 2%
Increments (Default 0%)
Selects the airflow trim amount; applies to air
conditioner only.
Cool Airflow Profile
(CL PRFL)
A, B, C, or D (Default D) Selects the airflow profile; applies to air
conditioner only.
Cool ON Delay (CL
ON)
5, 10, 20, or 30 seconds
(Default 5)
Selects the indoor blower on delay; applies to
air conditioner only.
Cool OFF Delay (CL
OFF)
30, 60, 90, or 120
seconds (Default 30)
Selects the indoor blower off delay; applies to
air conditioner only.
Dehumidification
Select (DEHUM)
ON or OFF (Default is
OFF)
Selecting “OFF” disables dehumidification;
selecting “ON” enables dehumidification;
applies to air conditioner only.
Heat Set-Up (HT SETUP) Applies to Heat Pump Systems Only
Sub-menu Item User Modifiable Options Comments
Heat Airflow Trim
(HT TRM)
-10% to +10% in 2%
Increments (Default 0%)
Selects the airflow trim amount; applies to heat
pump only.
Heat ON Delay
(HT ON)
5, 10, or 15 seconds
(Default 5-sec.)
Selects the indoor blower on delay; applies to
heat pump only.
Heat OFF Delay
(HT OFF)
30, 50, 70, or 90 seconds
(Default 30-sec.)
Selects the indoor blower off delay; applies to
heat pump only.
Defrost Interval
(DEFROST)
30, 60, 90, or 120 minutes
(Default 30-min.)
Selects the time interval between defrost;
applies to heat pump only.
Compressor
Delay (CMP DLY)
0, 5, 15, or 30 seconds
(Default 30-sec.)
Selects the compressor off time after a
reversing valve shift; applies to heat pump only.

CTK03 ComfortNet™ Communicating Thermostat
19 I/O-CHTSTAT03 69-2688—03
Wiring humidifier to the IFC
Wiring TrueEASE to IFC
Wiring TrueSTEAM to IFC
Tochangeinstallersetup(ISU)information,seepages12-13.
IFC
1
2
R
C
THERMOSTAT
1
2
R
C
HUM
HUM
1. WIRE THERMOSTAT AND TrueSTEAM AS SHOWN.
2. SET THERMOSTAT ISU 8000 TO “STEAM”.
3. SET TrueSTEAM DIP SWITCHES AS SHOWN (3 DOWN, 4 UP, 5 DOWN).
NOTE
FAN INTERLOCK IS HANDLED BY THE COMFORTNET COMMUNICATION.
TrueSTEAM DIP SWITCHES
TRUESTEAM
MCR33172
24 V
24 V
HUM
HUM
C
GT
R
RT
GF
EXT
6
5
43
2
ON
OFF
1
AFS MONITOR RECOMMENDED
IFC
1
2
R
C
THERMOSTAT
1
2
R
C
HUM
HUM
1. WIRE THERMOSTAT AND TrueEASE AS SHOWN.
2. SET THERMOSTAT ISU 8000 TO “BYPASS OR FAN POWERED”.
3. SET TrueEASE DIP SWITCHES AS SHOWN :
• TOP DIP SWITCH – SET TO THE RIGHT
• BOTTOM DIP SWITCH – SET TO THE LEFT
NOTE
FAN INTERLOCK IS HANDLED BY THE COMFORTNET COMMUNICATION.
MCR33173
TrueEASE DIP SWITCHES
BYPASS
HUM
CONTROL
FAN
POWERED
TrueEASE

System Installation Guide
20
69-2688—03 I/O-CHTSTAT03
Heat pump with outdoor temperature lockouts
Outdoortemperaturelockoutsareoptional.SeeInstallerSetup
options(ISU3120).
Heat pump only
Heat pump with backup heat as needed *
Backup heat only
Heat pump only
Heat pump or backup heat operates *
Backup heat only
Outdoor temperatureOutdoor temperature
Backup heat lockout
Backup heat lockout
Compressor lockout
Compressor lockout
* NobackupheatunlessindoortemperaturedropstoselectedBackupHeatDifferentialsetting,orBackupHeat
UpstageTimerexpires.Heat pump stays ON when backup heat turns on.
* NobackupheatunlessindoortemperaturedropstoselectedBackupHeatDifferentialsetting,orBackup
HeatUpstageTimerexpires.Heat pump turns OFF when backup heat turns on.
Electric - Backup heat allowed to run with heat pump
Fossil Fuel - Backup heat NOT allowed to run with heat pump