Carrier Comfort Choice thermostat Installation and Start-Up Instructions
Reklaam
Reklaam
CFTCH
Comfort Choice
Visit www.carrier.com
Installation and Start-Up Instructions
NOTE:
Read the entire instruction manual before starting the installation.
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TABLE OF CONTENTS
SAFETY CONSIDERATIONS .....................................................1
INTRODUCTION ..........................................................................1
INSTALLATION CONSIDERATIONS .......................................1
INSTALLATION ...........................................................................2
Check Equipment and Job Site ................................................2
Component Location and Wiring Considerations....................2
Install Components ...................................................................2
Install Utility I/O Board ......................................................2
Install Thermostat ................................................................2
Final Wiring ..............................................................................3
Understanding Sequence of Operations ...................................3
Temperature Set Points .......................................................3
Heating and Cooling Comfort Set Points...........................3
System Configuration ...............................................................4
Thermostat Configuration.........................................................4
To Enter The Configuration Mode: ....................................4
Option 2—Clean Filter Timer.............................................4
Available Selections: ...........................................................4
Option 4—Fan (G) On With W..........................................4
Available Selections ............................................................4
Option 5—Unit Type ..........................................................4
Available Selections: ...........................................................4
Option 6—Cooling Lockout Temperature..........................5
Available Selections ............................................................5
Option 7—Smart Recovery.................................................5
Available Selections ............................................................5
Option 8—AUX Heat Lockout Temperature .....................5
Available Selections ............................................................5
Option 13—Termparature Offset Adjustment ....................5
Available Selections ............................................................5
Option 14—HEAT/COOL Deadband Adjustment .............5
Available Selections ............................................................5
Option 15—Enable AUTO Model......................................5
Available Selections ............................................................5
Option 16—Select Auto Changeover Time........................5
Available Selections ............................................................5
Option 20—Serial Communications Test Mode ................5
SYSTEM STARTUP AND CHECKOUT ....................................5
Enable Installer Setup Mode ....................................................5
OPERATIONAL INFORMATION...............................................5
Quick Start ................................................................................6
Quick Programming of Comfort Schedules.............................6
Hold Function ...........................................................................7
Troubleshooting ........................................................................7
Error Messages ....................................................................7
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance, or use can cause fire, electrical shock, or other conditions which may cause personal injury or property damage. Consult a qualified installer, for information or assistance. The qualified installer must use factory-authorized kits or accessories when modifying this product. Refer to the individual instructions packaged with the kits or accessories when installing.
Follow all safety codes and wear safety glasses. Read these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local and state building codes and Sheet
Metal and Air Conditioning National Association (SMACNA) for special installation requirements.
Recognize safety information. This is the safety-alert symbol
When you see this symbol on the unit or in instructions and manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, and CAU-
TION. These words are used with the safety-alert symbol. DAN-
GER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which
could result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage.
been made.
INTRODUCTION
The Comfort Choice System allows your utility to control air conditioning and heating demands. You have the Choice to accept or override utility control.
The programmable thermostat temperature settings can change automatically through the use of schedules. This allows Comfort
Choice to change temperature settings to reflect occupancy or usage.
• Thermostat — Each installation has 1 thermostat. This is the command center for the system.
• Utility I/O board — The Utility I/O board communicates to the thermostat and provides 24 vac outputs to the Air Handling equipment.
• Radio — The two-way radio provides system access via wireless radio frequency communications.
INSTALLATION CONSIDERATIONS
These instructions cover the physical installation and start up of the Comfort Choice system. Use this instruction manual to guide the actual installation process after all the air side decisions have
1. Install thermostat in non-condensing areas with ambients between 32°F and 120°F. Install Utility I/O board in noncondensing areas with ambients between 32°F and 158°F.
2. The use of separate isolated transformer is required if the
existing system transformer is less than 40 va. The Comfort
Choice HVAC system can be powered from the system transformer in most applications. If the thermostat blanks or the electronics turn off when the system is active connect a separate (field supplied) 40 va class 2 isolation transformer to the 24 vac and C terminals to power the electronics.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
Tab misc misc
PC 101 Catalog No. 03CF-TC2 Printed in U.S.A.
Form CFTCH-3SI Pg 1 8-01 Replaces: CFTCH-2SI
.
INSTALLATION
Step 1—Check Equipment and Job Site
INSPECT EQUIPMENT — File claim with shipping company, prior to installation, if shipment is damaged or incomplete.
Step 2—Component Location and Wiring Considerations
To prevent personal injury or possible equipment damage disconnect power supply before routing wire.
All wiring must comply with national, local, and state codes.
LOCATING UTILITY I/O BOARD — All wiring is run back to the Comfort Choice Utility I/O board. Select a location near the furnace or fan coil where wiring from the thermostat and the equipment itself can come together easily.
The Comfort Choice System is approved for indoor use only and should never be installed with any of its components exposed to the elements. The Utility I/O board may be installed in any area where the temperature remains between 32° and 158°F, and there is no condensation. The cover must be installed to prevent damage from other sources. Do not locate where it will be accessible to children. Avoid areas in which the sound of relays energizing on the Utility I/O board may be an annoyance. The Utility I/O board must be mounted with the antenna positioned vertically. Wiring access is likely the most important consideration.
The connection to equipment (furnace or fan coil) could require as many as 8 conductors for a multi-stage installation. The optional outdoor air temperature (OAT) sensor requires 2 conductors. The
OAT sensor may be able to be connected at the outdoor unit using existing wiring.
Cables with excess conductors are acceptable. Cut off or fold back and tape any unneeded conductors.
Plan the routing of wiring early to avoid possible problems later on.
Remember all wires converge at the Utility I/O board, so its location is important.
Step 3—Install Components
INSTALL UTILITY I/O BOARD
The Utility I/O board is designed so that wires can enter it from behind, above, or below. Plan wire routing before mounting Utility
I/O Board.
1. Remove cover to access mounting holes (remove the system cover from the left side first).
2. Mount back plate to wall using screws and wall anchors provided.
3. Level back plate and tighten screws.
4. Connect included antenna by screwing the threaded end to the
Utility I/O board radio.
INSTALL THERMOSTAT
To prevent possible damage to Utility I/O board, do not mount on plenum, duct work, or flush against furnace or air handler.
LOCATING THERMOSTAT — The thermostat is the command center for the Comfort Choice system. It should be located where it is easily accessible and visible to homeowner.
For accurate temperature measurement, the following guidelines should be followed:
Thermostat should be mounted:
• Approximately 5 ft (1.5m) from floor.
• Close to the center–preferably on an inside wall.
• On a section of wall without pipes or duct work.
Thermostat should NOT be mounted:
• Close to a window, on an outside wall, or next to a door leading to the outside.
• Where it will be exposed to direct light and heat from a lamp, sun, fireplace, or other temperature-radiating object which may cause a false reading.
• Close to or in direct airflow from supply registers and return-air grilles.
• In areas with poor air circulation, such as behind a door or in an alcove.
WIRING CONSIDERATIONS — All wiring in the Comfort
Choice system may be unshielded. Ordinary thermostat wire is ideal. Use 22 gage or larger for normal wiring. Lengths over 100
→ ft should use 20 gage or larger wire.
The thermostat typically requires 4 conductors. Installation is possible with only 3 conductors if a 3-wire adapter kit is used.
Refer to Fig. 12 for wiring details. If the 3-wire adapter kit is used the conductor length from the thermostat to the Utility I/O board must not exceed 250 ft.
2
Ensure that the system power is off. Disconnect existing thermostat wires from the existing thermostat and equipment prior to connecting existing thermostat wires to the Comfort
Choice thermostat. Failure to do so WILL damage the thermostat.
1. Open thermostat rear door (mounting base) to expose mounting holes. Press back half of the right end inward and then pull front and back halves apart at the right end to open.
a. Remove hinged cover by snapping apart its hinge.
b. Separate the main body from the mounting plate by snapping its hinge apart.
c. Mount base before wiring and attaching remaining parts.
2. Route thermostat wires through large hole in mounting base.
Level mounting base against wall and mark wall through 2 mounting holes. Any thermostat cable of 4 or more conductors may be used. Shielded cable is not needed.
3. Drill two 3/16-in. holes in wall where marked.
4. Secure mounting base to wall with 2 screws and anchors provided, making sure all wires extend through hole in mounting base.
5. Adjust length and routing of each wire to reach proper terminal and connector block on mounting base with 1/4 in. of extra wire. Strip only 1/4 in. of insulation from each wire to prevent adjacent wires from shorting together when connected.
6. Match and connect 4 wires to proper terminals of the connector blocks. Recommended connection is RED to V+,
WHITE to VG, BLUE or YELLOW to RS+, and GREEN to
RS-.
Antenna Connection
Radio
Ribbon
Connection
OATC Optional Outdoor Air
OAT
Temperature Sensor
}
RH
RC
C
Y
Heating Transformer Connection*
Cooling Transformer Connection*
24VAC Common
Compressor Stage-1
Thermostat
VG
RS-
RS+
V+
GREEN
WHITE
Blue/Yellow
RED
VG
RS-
RS+
V+
}
No
Connection
VG
RS-
RS+
V+
Thermostat
Communications
Port
Utility IO Board
H/A
B
O
R
G
W
Y2
W
Fan Connection
Heat Stage-1
Compressor Stage-2
Heat Stage-2
No Connection ( Future Use)
Reversing Valve (Active in Heating mode)
Reversing Valve (Active in Cooling mode)
24VAC Hot (Utility IO)
*
-
RH provides power to the W & W2 relays -RC provides Power to the Y & Y2 and G Relays. If the Equipment Controller board is to be powered from the system; R must be connected to RC. If a boiler is used the RC/RH connection must be disconnected by twisting the trace provided.
A01386
→
Fig. 1—System Wiring Diagram
Improper wiring or installation may damage the thermostat.
Check to make sure wiring is correct before proceeding with installation or turning on unit.
7. Push any excess wire into wall and against mounting base.
Seal hole in wall to prevent air leaks. Leaks can affect operation.
8. Snap hinge back together.
9. Close thermostat assembly making sure pins on back of circuit board align with sockets in connector.
Step 4—Final Wiring
Bring all Utility I/O board wires together at Utility I/O board.
Make all connections as indicated on Fig. 1.
Figures 2 through 11 show the connection between the Utility I/O board and the HVAC equipment. Select proper diagram for your equipment and connect accordingly. This connection will require as few as 4 or as many as 7 conductors.
NOTE:
Wiring diagrams appear near the end of this document.
NOTE:
It is good practice to mark each wire as the final connection is made. This will preserve its identity if it is ever disconnected.
Wiring Considerations
Comfort Choice treats all furnaces as if they were 2-stage. For single stage equipment, connect to W. The same holds true for auxiliary heat in fan coils.
With any 2-stage furnace, configure the furnace so that low heat is controlled by W and high heat is controlled by W and W2 together.
All 2-speed air conditioners and heat pumps need to be configured so that Y controls low speed and Y and Y2 together control high speed in both heating and cooling.
Step 5—Understanding Sequence of Operations
TEMPERATURE SET POINTS
The Comfort Choice System uses 2 temperature set points, the higher for cooling and the lower for heating. A minimum difference of 2°F. is normally enforced between heating and cooling set points, although this value may be adjusted by the installer. Each set point may be manually adjusted or controlled by a programmed time schedule established by the home owner.
HEATING AND COOLING COMFORT SET POINTS
If space temperature is between heating and cooling set points, then it is said to be
″ satisfied
″ with respect to temperatures. When a space is satisfied, no heating or cooling is required. When the space is satisfied, there is no demand and the equipment is turned off. For example, if cooling set point is 76°F and heating set point
3
is 72°F, then a space temperature of 73°F is assumed to be satisfactory and no heating or cooling of the space is required.
If space temperature falls below heating set point, then that space needs to have heat added which will raise space temperature back to heating set point. For example, if heating set point is 72°F and space temperature is 70°F, then space temperature must be raised
2°F in order for the space to be satisfied. In this case, temperature
″ heating demand
″ for zone is 2°F. (72° minus 70°F.)
Otherwise, if temperature in a space rises above cooling set point, then that space needs to have heat removed which will lower space temperature back to cooling set point. For example, if cooling set point is 76°F and space temperature is 77°F, space temperature must be lowered 1°F in order for space to be satisfied. In this case,
″ cooling demand
″ for space is 1°F. (77° minus 76°F.)
Step 6—System Configuration
Comfort Choice must be configured to match the type of equipment connected to it. In addition, there are several choices of configuration based on how the user wants the system to operate.
Configuration is done by setting the equipment type in the user interface on power up.
Step 7—Thermostat Configuration
The thermostat is configured via a group of selections made through the keypad in a special configuration mode. Before the equipment is operated, the system must be properly configured.
Make sure this step is not left out.
Turn on power to the system.
At power up the thermostat displays all segments for a few sec.
This is followed by the selection for system type. The system type shows as follows:
1. AC—1-Speed Air Conditioner
2. HP—1-Speed Heat Pump
3. A2—2-Speed Air Conditioner
4. H2—2-Speed Heat Pump
Power-on check of the thermostat itself can be done by separating the thermostat from its backplate and then reconnecting it by attaching the 2 parts. This will allow observation of the thermostat at power up.
Several installer select options are set using the thermostat keypad.
These configuration options (switch settings) are intended to be selected at installation and are normally not modified by the home owner. A special procedure allows entry into configuration mode.
Comfort Choice will automatically exit this mode if no button is pressed for 3 minutes. While in the configuration mode, configuration choices can be made.
Not all option numbers are used in the product. Options will only appear on the thermostat if they are used in the particular application.
TO ENTER THE CONFIGURATION MODE:
Press and hold FAN button for approximately 10 sec until room temperature and set point displays change to 2 numbers. You are now in the configuration mode.
CONFIGURATION OPTIONS:
Option 2—Clean filter timer
Option 4—Fan (G) ON with W
Option 5—Unit type AC, A2, HP, H2
Option 6—Low ambient cooling lockout temperature
Option 7—Smart recovery
Option 8—Aux heat lockout temperature
4
Option 13—Temperature or set adjustment
Option 14—Heat/cool dead band adjustment
Option 15—Enable AUTO mode
Option 16—Auto change over timer
Option 20—Serial communications test mode
NOTE:
If END button is pressed or if no button is pressed for 60 minutes, Comfort Choice will exit configuration mode and return to normal operation. To re-enter configuration mode, FAN button must be pressed and held for 10 sec.
While in configuration mode, the large display shows the selection which has been made and the smaller display (COOL set point display) shows current option number. One of these will be flashing.
The up and down buttons are used both to move between available options and to make a selection for each option. When option number (small display) is flashing, the up and down buttons adjust it, moving between available option numbers. After desired option number has been selected, press SET TIME/TEMP button. The large display will now flash, indicating that the up and down buttons now control available choices within that option. Each press of the SET TIME/TEMP button switches between available option (small display) and available selections within each option
(large display).
Available options and available selections for each are described below.
OPTION 2—CLEAN FILTER TIMER
Select hr of blower operation (heating, cooling, or fan) before
CLEAN FILTER icon is displayed. With OFF selected, icon will never come on, disabling this feature. Time selection can be from
400 to 3600 hr by selecting numbers 1 through 9. (Time is 400X number selected.) Factory default is 2 (800 hr). Recommended selections are: disposable filter—400 to 800 hr, media filter—1200 to 1600 hr, or electronic air cleaner—1600 to 2400 hr of blower operation.
AVAILABLE SELECTIONS:
Use UP and DOWN buttons to alternate between OF (off) and 1 to
9 in steps of 1.
OPTION 4—FAN (G) ON WITH W
This selection determines whether the G (fan) output is to be ON or OFF when any W (furnace or strip heat) output is ON. Most furnaces and fan coils manage their own blowers and do not require a separate G signal. For these applications, select OFF.
Some auxiliary heaters require a separate G signal to turn on the blower. In this case, select ON. Factory default is OFF.
AVAILABLE SELECTIONS
Use UP or DOWN to select AC, A2, HP or H2.
OPTION 5—UNIT TYPE
AC—Single Speed Compressor AC System - 1 heat/1 cool
A2—Two Speed Compressor AC System - 2 heat/2 cool
HP—Single Speed HP System - 2 heat/1 cool
H2—Two Speed Compressor HP System - 2 heat/2 cool
There is no system default. If the thermostat powers up without a valid HVAC System configuration screen (indicated by a - - in the temperature display with all other icons illuminated), the unit will only operate the fan output until a valid selection is made.
AVAILABLE SELECTIONS:
Use UP or DOWN to select AC, A2, HP and H2.
OPTION 6—COOLING LOCKOUT TEMPERATURE
This option allows selection of the outdoor temperature below which cooling is not allowed. Option 6 will allow the selection of
45, 50 or 55° F. For all residential equipment, select 55° F. Factory default is 55.
AVAILABLE SELECTIONS
Use the UP and DOWN buttons to move between 45, 50 and 55.
OPTION 7—SMART RECOVERY
Smart recovery is a function that shall transition the room to the next programmed setpoints as energy efficiently as possible.
ON
When the HOLD function is off, heating/eheat/auto mode is selected, there is a program schedule change within the next 90 minutes and the next programmed heat setpoint is greater than the current heat setpoint, heating smart recovery is activated.
When the HOLD function is off, heating/eheat/auto mode is selected, there is a program schedule change within the next 90 minutes and the next programmed cool setpoint is less than the current cool setpoint, cooling smart recovery is activated.
During smart recovery, the thermostat shall ramp the setpoint in a straight line from the current setpoint to the next setpoint 1/16° F increment starting 90 minutes before the next programmed time.
If the hold button is pressed, the setpoints are held at their current displayed values (i.e. values between 75.0 and 75.9 would result in a setpoint of 75.0)
OFF
At the programmed time, the setpoints shall be changed to the next programmed settings.
Default = On
AVAILABLE SELECTIONS
Use UP and DOWN buttons to select between OF (off) and ON.
OPTION 8—AUX HEAT LOCKOUT TEMPERATURE
This option allows selection of the outdoor temperature above which auxiliary heating is not allowed. This option is only available on HP or H2 Systems.
Option 8 will allow the selection of 5 to 55 degrees F and OF (off).
Default: Factory default is OFF.
AVAILABLE SELECTIONS
Use the UP and DOWN buttons to move between OF and 5 to 55.
OPTION 13—TERMPARATURE OFFSET ADJUSTMENT
Temperature reading can be independently offset by up to ± 5°F.
The UP and DOWN buttons select and offset value between -5 and
+5°F in 1°F steps. The offset number is added to the actual temperature to produce the offset temperature, which is displayed and used by the system. Factory default value is 0.
AVAILABLE SELECTIONS
Use UP and DOWN buttons to move between -5 and +5 in steps of 5.
OPTION 14—HEAT/COOL DEADBAND ADJUSTMENT
The minimum allowable difference between the heat and cool set points can be selected to any value between 0° and 6°F. The factory default value is 2. Higher numbers provide less precise temperature control but save energy. Lower numbers provide comfort with more energy use.
AVAILABLE SELECTIONS
Use UP and DOWN buttons to move between 0 and 6 in steps of
1.
5
OPTION 15—ENABLE AUTO MODEL
In some applications, auto changeover from heat to cool may not be desired. Option 15 selects ON or OF (off) for auto changeover.
When OF, the AUTO mode icon never appears, disabling the
AUTO mode. Factory default is ON.
AVAILABLE SELECTIONS
Use UP or DOWN buttons to alternate between OF (off) and ON.
OPTION 16—SELECT AUTO CHANGEOVER TIME
This option selects 5 to 30 minute time delay between heat and cool while in auto changeover mode. System must have no demand in current mode for selected time before changeover between heating and cooling is allowed. Factory default is 30 minutes.
AVAILABLE SELECTIONS
Use UP and DOWN buttons to move between 5 and 30 in steps of
5.
OPTION 20—SERIAL COMMUNICATIONS TEST MODE
SE:
With this installer setup switch selected, the product shall initiate a wireless/modem message to facilitate end to end testing of the wireless/modem connection. The user interface
(TSTAT) will communicate to the Utility I/O board to send a wireless message to itself. The Utility I/O board will monitor the status of the message and send this information back to the user interface. The user interface will display the status of the last test message in the clock location. If the first message is still in progress, --- will be displayed. If the last test message was successfully sent and received by the wireless/modem connection, PAS will be displayed in the clock location. If the last message was not successfully sent and received, F1 or F2 will be displayed in the clock location. (F1—cannot send message; F2—message sent, no reply.) A maximum of three test messages will be sent. To send additional test messages, this software switch must be manually set to ON by the installer.
SYSTEM STARTUP AND CHECKOUT
Comfort Choice is designed with built-in checkout capability for the equipment. Use the sequence below for trouble free setup.
Step 1—Enable Installer Setup Mode
Select installer setup mode by holding the fan key for 10 sec. To enter installer setup, hold the fan key for another 10 sec to enter installer test mode. This mode is indicated by InSt appearing in
the thermostat clock display. In this mode several special features are available to assist in the setup/checkout process: a. The FAN button turns the blower ON or OFF.
b. The MODE button operates HEAT, COOL, or EHEAT for
4 minutes and then returns automatically to OFF.
c. Press END to exit installer test.
If the RESET FILTER button is pressed and the “clean filter” icon is not on, the clean filter timer shall be reset.
OPERATIONAL INFORMATION
Five-minute Compressor Timeguard
This timer prevents the compressor from starting unless it has been off for at least 5 minutes. It can be defeated for 1 cycle by simultaneously pressing the FAN mode button and the UP button.
It is not active in the installer setup mode.
Fifteen-minute Cycle Timer
This timer prevents the start of the next cycle until at least 15 minutes after the start of the present cycle. Its job is to assure that equipment is not cycled more than 4 times per hr (or 1 cycle every
15 minutes). It is defeated for 1 cycle when the set point is
SYSTEM TYPE
1-Speed AC (AC)
2-Speed AC (A2)
1-Speed HP (HP)
2-Speed HP (H2)
COOL 2
N/A
Y,Y2
N/A
Y, Y2, O
Table 1—Outputs vs. Stages
COOL 1
Y
Y
Y,O
Y, O
HEAT 1
W
W
Y
Y
HEAT 2
W, W2
W, W2
Y, W
Y, Y2
HEAT 3
N/A
N/A
Y, W, W2
Y, Y2, W
HEAT 4
N/A
N/A
N/A
Y, Y2, W, W2
HEAT 5
N/A
N/A
N/A
N/A manually changed to provide fast response to set point change. It can also be defeated for 1 cycle by simultaneously pressing the
FAN mode and UP buttons.
Staging Timer
In multistage heating or cooling this timer prevents any higher stage from coming on until the previous stage has been on for 10 minutes. The timer is extended to 15 minutes for heat pump auxiliary heat and dual fuel furnace operation.
Minimum On Time
When a cooling or heating stage is turned on, it will remain on for at least 3 minutes. These timers are canceled when set points are changed.
Heat/Cool Set Point Difference
The deadband between heating and cooling set points is selected by configuration Option 14. This deadband is maintained by allowing one set point to ’push’ the other to maintain the required minimum difference. This is true in programming of schedules and adjustment of set points in operation.
Auto Changeover
When the auto changeover mode is selected, a change from heat to cool or cool to heat cannot occur until a demand exists in the new mode and no demand has appeared in the old mode for the amount of time selected by configuration Option 16. Note that this means that for changeover to occur, the old mode must be and remain satisfied for the selected changeover time. Use the 30 minute setting for installations which should change modes only twice per day. The 5 minute setting will allow simultaneous heating and cooling demands to be serviced.
Emergency Heat Mode
When system is configured for a heat pump and EHEAT mode is selected, Y outputs are disabled and W outputs only are used for heat.
Power-On Check
When power is first applied to the system the large display indicates the equipment type selected as follows (If -- appears, the equipment type must be selected with the UP/DOWN keys.):
1. AC—1-Speed Air Conditioner
2. HP—1-Speed Heat Pump
3. A2—2-Speed Air Conditioner
4. H2—2-Speed Heat Pump
Other Messages
Small Arrow—A small arrow is located to the left of HEAT and
COOL icons which are located under the two set point displays.
These indicate when cooling or heating equipment is actually operating. When arrows flash, equipment is waiting to come on but is being held off by compressor timeguard or cycle timer.
Outputs vs. Stages Table 1 lists the active outputs for each stage of each possible system configuration. G is not shown.
For 1-stage furnaces and auxiliary heat connect to W and leave W2 open.
For single speed compressors, connect to Y and leave Y2 open.
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Step 1—Quick Start
The quick start procedure outlined below will allow you to use your system before you learn all the details of system operation.
This setup may be done by the installer. For the best comfort and energy-saving results, we recommend that you read through the
Owner’s Guide and set up the system to match the end-user’s schedule and comfort requirements.
To begin, locate the thermostat and follow the steps outlined below: (See Fig. 14.)
Set current day and time: (This step is only necessary of the time has not been automatically set by the Radio. If time has been received from the radio, the keys to change the time and day are disabled.)
1. Press CHANGE DAY button until current day of the week is shown.
2. Press SET TIME/TEMP button until the TIME icon flashes.
3. Press UP or DOWN buttons until the desired time is shown, making sure that the AM or PM time is correct.
4. Press END key to exit.
Select system Mode:
1. Press MODE button to select HEAT or COOL.
2. Press HOLD button to turn on HOLD icon.
3. Press UP or DOWN button until the desired temperature is displayed.
Step 2—Quick Programming of Comfort Schedules
The following is a brief overview of how to access and program schedules in your new system. We highly recommend that you read and follow the programming information provided in the
Owner’s Guide for detail step-by-step instructions.
Before proceeding, set the correct Time and Day at the thermostat.
See Quick Start section above.
If you followed the above Quick Start procedure in selecting the system mode, you will need to reverse the HOLD function before proceeding. Simply press HOLD button to remove the icon from the display.
During the programming process, you will have access to 4 program time periods, e.g., WAKE, DAY, EVE, and SLEEP. You will be able to select program start times and the heat/cool set points for each time period. Use the Keypad to enter and move around inside the program. Use the temperature UP and DOWN buttons to adjust the start times and to raise and lower set points.
When inside the program, the blinking icon indicates that a setting may now be changed.
1. Decide on a program schedule that you desire. Table 4 is an example of what already exists in the User Interface as the
Energy Star recommended settings.
2. To begin programming, press PROGRAM button.
3. Press CHANGE DAY button until Monday (Mo) is displayed.
4. Press PROGRAM button until the WAKE period is displayed.
5. Press SET TIME/TEMP button until the TIME icon is flashing.
6. Start programming the WAKE start time. Press the UP or
DOWN button until the desired starting time is displayed, make sure that the AM is correct.
7. Press SET TIME/TEMP button until the HEAT icon is flashing. Press UP or DOWN button until the desired heating temperature for that period is displayed.
8. Press SET TIME/TEMP button until the COOL icon is flashing. Press UP or DOWN button until the desired cooling temperature for that period is displayed. You have now programmed the time and desired heating and cooling temperatures for Monday, in the WAKE time period.
9. Press PROGRAM button to change from WAKE to the DAY period. Repeat steps 6 through 11 for programming the time and desired heating and cooling temperatures for Monday, in the DAY time period. Use PROGRAM button again to select
EVE and SLEEP, and repeat procedure.
10. After Monday is completely programmed, you may select
COPY DAY and advance to Tuesday. You can now press
CHANGE PREVIOUS DAY button and copy the program schedule from Monday into Tuesday. This can be repeated as needed for each remaining day in the week. If copying the previous day is not desired, you may individually program each day using the CHANGE DAY button and repeating steps
5 through 10. Press END button to exit programming mode.
NOTE:
Other ways to program comfort schedules with their function keys can be found in the Owner’s Manual.
Step 3—Hold Function
At the User Interface or Smart Sensors:
Pressing HOLD butting activates and deactivates HOLD function.
When HOLD function is active, HOLD icon is displayed, and the current set points will be used until the user cancels the HOLD function. The HOLD function prevents the set points from changing according to the program schedule. Cancelling the
HOLD function changes the set points to whatever is in the program schedule for that period of the day.
Step 4—Troubleshooting
ERROR MESSAGES
Several error messages are provided. They appear on the large display and alternate with the normal room temperature data at a 2 sec rate. These are:
WAKE
DAY
EVE
SLEEP
Table 2—Thermostat
TIME
6:00 AM
8:00 AM
5:00 PM
10:00 PM
COOL
78
85
78
82
HEAT
68
60
68
60
1. E1—COMMUNICATION FAILURE. An E1 will be displayed if the thermostat cannot communicate with the Utility
I/O board. Check and make sure V+, Vg, RS+, and RS- are wired correctly between the thermostat and Utility I/O board.
This error message may sometimes take up to 30 sec before it is displayed. After the problem has been fixed, cycle power to ensure that all errors have cleared.
2. E3—OUTDOOR AIR TEMPERATURE SENSOR FAIL-
URE. An E3 will be displayed if the outdoor air temperature sensor is open, or if it is reading below -40°F or above 180°F.
This error will also occur if the following features are active and the Utility I/O board cannot detect the outdoor air temperature sensor: Option 8 Aux heat lockout.
3. E4—NONVOLATILE MEMORY FAILURE. An E4 will be displayed if the configuration and program schedules cannot be read. This is usually the result of a microprocessor failure.
If cycling power does not reset this error, the thermostat must be replaced.
Error Codes—Utility I/O Board
Error codes for the Utility I/O board are indicated by the flash rate of the on board LED. The slow flash rate is the first digit, and the fast flash rate is the sec. During normal operation the flash rate of the LED will be 1 sec on, 1 sec off.
a. 25—EEProm (Memory) Error. Replace the Utility I/O board.
b. 32—Device out of range. Check antenna connection.
c. 34—No communications with thermostat. Check connections between the I/O board and the thermostat.
d. 36—No communications with the Radio. Check cable connection between the Radio and the Utility I/O board.
WIRING DIAGRAM NOTE
Connect Utility I/O board 24 vac and RC to furnace R and Utility
I/O board C to furnace C. If a separate Utility I/O board transformer is used, connect 24 vac to 24 vac and C terminals on the Utility I/O board and the furnace R to the Utility I/O board RH.
7
29
30
31
32
23
24
25
26
27
28
16
17
18
19
20
21
22
TEMP F°
0
1
2
3
10
11
12
13
14
15
6
7
8
9
4
5
52,077
50,540
49,054
47,616
46,225
44,880
43,578
42,318
41,099
39,920
38,778
37,672
36,602
35,566
34,563
33,591
32,650
OHMS
85,378
82,710
80,135
77,649
75,249
72,931
70,693
68,531
66,442
64,475
62,475
60,592
58,771
57,012
55,311
53,667
20,441
19,902
19,379
18,872
18,379
17,902
17,438
16,987
16,550
16,125
15,713
15,312
14,923
14,545
14,178
13,822
13,475
OHMS
31,738
30,855
30,000
29,171
28,367
27,589
26,834
26,103
25,394
24,706
24,039
23,393
22,766
22,158
21,568
20,996
Table 3—Temperature/Ohm Relationship
62
63
64
65
56
57
58
59
60
61
49
50
51
52
53
54
55
TEMP F°
33
34
35
36
43
44
45
46
47
48
37
38
39
40
41
42
95
96
97
98
89
90
91
92
93
94
82
83
84
85
86
87
88
TEMP F°
66
67
68
69
76
77
78
79
80
81
70
71
72
73
74
75
7,507
7,333
7,164
7,000
6,839
6,683
6,531
6,383
6,238
6,098
8,862
8,651
8,448
8,250
8,056
7,868
7,685
OHMS
13,138
12,811
12,493
12,184
11,883
11,591
11,307
11,031
10,762
10,501
10,247
10,000
9,760
9,526
9,298
9,077
122
123
124
125
126
127
128
129
130
115
116
117
118
119
120
121
TEMP F°
99
100
101
102
109
110
111
112
113
114
103
104
105
106
107
108
3,602
3,527
3,453
3,382
3,312
3,243
3,177
3,112
3,048
4,183
4,094
4,007
3,922
3,839
3,758
3,679
OHMS
5,961
5,827
5,697
5,570
5,446
5,326
5,208
5,094
4,982
4,873
4,767
4,663
4,562
4,464
4,368
4,274
8
Twist
To
Separate
RC/RH
RH
RC
24 VAC Comm C
Cool Stage-1
Y
Utility IO
Board
Fan G
Heat Stage-1
W
Y2
W2
H/A
B
24 VAC Hot
O
R
Typical Boiler
T1
T2
Typical
Fan Coil
C
Y
G
R
1-Stage Air
Conditioner
C
Y
A01008
Fig. 2—1-Stage Boiler with 1-Stage Air Conditioner
24 VAC Comm.
RH
RC
C
Y
Fan
Heat Stage-1
G
W
Y2
W
24 VAC Hot
H/
B
O
R
Utility
I/O Board
1-Stage
Furnace
C
Y
G
W
R
RH
RC
24 VAC Comm.
Cool Stage-1
C
Y
Fan G
Heat Stage-1 W
Y2
W2
Utility
I/O Board
1-Stage
Furnace
G
W
C
Y
Fig. 3—1-Stage Furnace
1-Stage
Air
Conditioner
C
Y
Cool Stage-1
RH
RC
C
Y
Utility
I/O Board
1-Stage
Furnace
C
Fan
Heat Stage-1
Cool Stage-2
G
W
Y2
W2
G
W
Y
24 VAC Hot
H/A
B
O
R R
A01010
Fig. 4—1-Stage Furnace with 1-Stage Air Conditioner
24 VAC Hot
H/A
B
O
R R
A01009
2-Stage
Air
Conditioner
C
Y
Y2
R
A01011
Fig. 5—1-Stage Furnace with 2-Stage Air Conditioner
9
24 VAC Comm.
Cool Stage-1
RH
RC
C
Y
Fan
G
Heat Stage-1
W
Y2
W2
24 VAC Hot
H/A
B
O
R
Utility
I/O Board
2-Stage
Furnace
C
Y/Y2
G
W/W1
W2
R
1-Stage
Air
Conditioner
C
Y
RH
RC
24 VAC Comm
Cool Stage-1
C
Y
Fan G
Heat Stage-1
W
Cool Stage-2
Y2
Heat Stage-2 W2
Utility I/O
Board
24 VAC Hot
H/A
B
O
R
Typical
Fan Coil
C
G
W2
W3
E
Y
2- Stage Air
Conditioner
C
Y
Y2
R
R
A01012
Fig. 6—2-Stage Furnace with 1-Stage Air Conditioner
Utility I/O
Board
Typical Fan
Coil
1-Stage Air
Conditioner
24 VAC Comm
Cool Stage-1
RH
RC
C
Y
C
Y
C
Y
A01015
Fig. 9—Typical Fan Coil with 2-Stage Air Conditioner
Utility I/O
Board
Typical
Fan Coil
2-Stage
Heat Pump
24 VAC Comm
Heat/Cool Stage-1
RH
RC
C
Y
C C
Y
Fan
Heat Stage-1
Heat Stage-2
G
W
Y2
W2
G
W2
W3
Fan
Heat Stage-3
Heat Stage-2
Heat Stage-4
G
W
Y2
W2
G
W2
Y
W3
Y2
W2
E E
24 VAC Hot
H/A
B
O
R
R
RVS Cooling
24 VAC Hot
H/A
B
O
R
R
O
R
A01014
Fig. 7—Typical Fan Coil with 1-Stage Air Conditioner
Utility
I/O Board
2-Stage
Furnace
2-Stage
Air
Conditioner
A01017
Fig. 10—Typical Fan Coil with 2–Stage Heat Pump with Reversing Valve Active in Cooling
Utility I/O
Typical
1- Stage
Board
Fan Coil Heat Pump
24 VAC Comm.
Cool Stage-1
RH
RC
C
Y
C C
RH
RC
24 VAC Comm
Heat/Cool Stage-1
C
Y
C C
Y1
Y Y
Fan
G
Heat Stage-1
Cool Stage-2
Heat Stage-2
W
Y2
W2
G
W/W1
Y2
Y2
Fan
G
Heat Stage-2
W
Y2
Heat Stage-3
W2
G
W2
W3 W2
24 VAC Hot
H/A
B
O
R
W2
R R
RVS Cooling
24 VAC Hot
H/A
B
O
R
E
O
R R
A01013
Fig. 8—2-Stage Furnace with 2-Stage Air Conditioner
A01059
Fig. 11—Typical Fan Coil with 1-Stage Heat Pump with Reversing Valve Active in Cooling
10
NOTE:
Set Option 4—Fan on with W energized for the Emergency
Heat Fan Coil Operation.
→
User Interf ace
V+
VG
RS+
RS-
RED
GRN
WHT
Fig. 12—Three Wire Adapter Connection Diagram
UI OB
RED
GRN
WHT
V+
VG
RS+
RS-
A01385
11
Copyright 2001 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231 cftch3si
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
Tab misc misc
PC 101 Catalog No. 03CF-TC2 Printed in U.S.A.
Form CFTCH-3SI Pg 12 8-01 Replaces: CFTCH-2SI
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