Carrier Thermostat TB NAC User Manual

T B --- N A C  
T B --- N H P  
Base Series  
Non---Programmable Thermostat  
Installation Instructions  
could result in personal injury or death. CAUTION is used to  
identify unsafe practices which may result in minor personal injury  
or product and property damage. NOTE is used to highlight  
suggestions which will result in enhanced installation, reliability, or  
operation.  
INTRODUCTION  
The Base Series thermostat is an electronic 24VAC,  
non--programmable, manual changeover wall mount thermostat.  
This thermostat uses a single setpoint to maintain and control room  
temperature in both the heating and air conditioning modes. The  
thermostat is designed to maintain +/-- 2_F accuracy. No batteries  
are required; temperature, fan, mode, and installer configuration  
settings are preserved with power off.  
INSTALLATION CONSIDERATIONS  
Air Conditioner Model  
TB--NAC, Base Series Model air conditioner thermostat, may be  
wired with or without connecting a common wire between the  
indoor equipment and the thermostat. However, it is recommended  
to use a common wire whenever possible. Without a common wire  
this thermostat becomes “power stealing.” This means it will need  
to steal a small amount of power from the equipment to which it is  
connected.  
NOTE: Not all HVAC equipment is compatible with power  
stealing type thermostats. All Carrier equipment is directly  
compatible with this thermostat except the Thermostat Conversion  
Kit, Part #TSTATXXCNV10. For all non--Carrier equipment,  
consult the system equipment Installation Instructions before  
applying this thermostat in a power stealing manner.  
A07108  
Base Non---Programmable Thermostat  
NOTE: Read the entire instruction manual before starting the  
installation.  
TABLE OF CONTENTS  
PAGE  
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1  
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
INSTALLATION CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1  
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
Step 1 — Thermostat Location . . . . . . . . . . . . . . . . . . . . . . . . 1  
Step 2— Install Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
Step 3 — Set Thermostat Configuration . . . . . . . . . . . . . . . . . 2  
Step 4 — Thermostat Operation . . . . . . . . . . . . . . . . . . . . . . . . 3  
Step 5 — Check Thermostat Operation . . . . . . . . . . . . . . . . . . 3  
WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Heat Pump Model  
TB--NHP, Base Series Model heat pump thermostat, is compatible  
with all Carrier heat pump systems. It is NOT power stealing and  
MUST have both the R and C terminals connected to operate  
properly. This thermostat uses a green LED to indicate auxiliary  
heat and emergency heat operation.  
INSTALLATION  
Step 1 — Thermostat Location  
Thermostat should be mounted:  
SAFETY CONSIDERATIONS  
Read and follow manufacturer instructions carefully. Follow all  
local electrical codes during installation. All wiring must conform  
to local and national electrical codes. Improper wiring or  
installation may damage thermostat.  
S
Approximately 5 ft (1.5m) from floor.  
S
Close to or in a frequently used room, preferably on an  
inside partitioning wall.  
On a section of wall without pipes or duct work.  
S
Recognize safety information. This is the safety--alert symbol  
.
Thermostat should NOT be mounted:  
When you see this symbol on the equipment and in the instruction  
manual, be alert to the potential for personal injury. Understand the  
signal words DANGER, WARNING, and CAUTION.  
These words are used with the safety--alert symbol. DANGER  
identifies the most serious hazards which will result in severe  
personal injury or death. WARNING signifies a hazard which  
S
Close to a window, on an outside wall, or next to a door  
leading to the outside.  
S
Exposed to direct light and heat from the sun, a lamp,  
fireplace, or other heat--radiating object which may cause  
a false reading.  
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equipment can turn off in less than 3 minutes if a change in  
setpoint or a change in mode occurs.  
Staging Timer  
Option 10 — O (reversing valve) On with Heat or Cool  
Selection  
This selection is only available on heat pump model thermostats.  
This selection determines whether the reversing valve is energized  
in the heating or cooling mode. Factory default is C.  
If the thermostat is a heat pump model, it has 2--stage heat  
capability. With HP operation, there is a 15--minute delay between  
the first and second stages of heat. The Y output will energize first,  
then 15 minutes later, W is allowed to come on if the thermostat  
determines it is not satisfying the demand.  
Available Selection:  
Use UP and DOWN buttons to change between H and C.  
Option 13 — Room Temperature Offset Adjustment  
However, if the heating demand is greater than 5_F, there will be  
This option allows calibration (or deliberate miscalibration) of the  
room temperature sensor. There are various reasons why  
homeowners may want to have displayed temperature adjusted to a  
higher or lower value. The selected number is the number of  
degrees, plus or minus, which will be added to actual temperature.  
only a 30 second delay before bringing on W.  
Auxiliary Heat Indicator  
A green LED indicates the use of auxiliary heat or emergency heat.  
Error Messages  
----” (two dashes) will be displayed if the thermostat cannot  
properly read room temperature. If “----” appears, replace  
thermostat.  
The numbers can range between --5 and +5. Factory default is 0.  
Available Selection:  
Use UP and DOWN buttons to now move between --5 and +5 in  
increments of 1.  
E4 will be displayed if the thermostat has an internal memory  
failure. If E4 appears, replace thermostat.  
Step 4 — Thermostat Operation  
Temperature Display  
Step 5 — Check Thermostat Operation  
Fan Operation  
Thermostat will display room temperature until UP or DOWN  
button is pressed. The word SET appears when these buttons are  
pressed and the current setpoint is displayed. If no buttons are  
pressed for 5 sec, the display will change back to show room  
temperature.  
1. Press FAN button. This will start continuous fan operation.  
FAN annunciator will turn on.  
2. Press FAN button again. This will stop continuous fan  
operation. FAN annunciator will turn off.  
Heating Operation  
Timeguard Timer  
1. Press H/C button until HEAT is displayed.  
A 5--minute timeguard is built into the thermostat immediately  
upon power up, and any time the compressor turns off. The  
compressor will not turn on until the timeguard has expired. The  
timeguard affects only compressor operation. Pressing UP and  
FAN buttons simultaneously will override the timeguard for 1  
cycle. With PH or PC selected under Option 01, this timer is  
defeated.  
2. Press UP button until LCD readout reads 3_F above room  
temperature. Press UP and FAN buttons simultaneously to  
defeat timers. Heating system should begin to operate  
immediately.  
3. For HP thermostats only, press H/C button until EMHT  
(emergency heat) appears. Press UP and FAN buttons  
simultaneously to defeat timers. Emergency heating (W is  
ON, Y is OFF) should begin immediately.  
Cycle Timer  
In normal heating and cooling operation the thermostat will not  
allow more than 4 equipment cycles per hour (or 1 cycle every 15  
minutes). Both the Y and W outputs have a 15--minute timer that  
starts counting down when the output is turned on, (e.g., if Y  
output is turned on for 9 minutes and then satisfies, it cannot turn  
back on for another 6 minutes regardless of demand). However,  
pressing UP and FAN buttons simultaneously or changing the  
setpoint will override the timer for 1 cycle.  
Cooling Operation  
1. Press H/C button until COOL is displayed.  
2. Press DOWN button until LCD readout reads 3_F below  
room temperature. Press UP and FAN buttons  
simultaneously to defeat timers. Cooling system should  
begin to operate immediately.  
Table 1 shows the thermostat outputs for each available stage of  
heating or cooling. It may be useful in checkout or  
troubleshooting.  
Minimum on Timer  
Once the equipment has turned on, it will remain on for a  
minimum of 3 minutes regardless of demand. However, the  
Table 1 – Outputs  
EQUIPMENT  
CONFIGURATION  
OPTION #1  
THERMOSTAT  
FACTORY  
CONFIGURATION  
COOL  
STAGE 1  
HEAT  
STAGE 1  
HEAT  
STAGE 2  
EM HEAT  
AC, PC  
AC, HP  
HP  
Y, G  
W
--- ---  
--- ---  
HP, PH  
RVS = C  
Y, G, O / B  
Y, G  
Y, G  
Y, G, W  
W
W
HP, PH  
RVS = H  
HP  
Y, G, O / B  
Y, G, W, O / B  
3
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WIRING DIAGRAMS  
A06566  
A06567  
Fig. 1 -- A/C Thermostat Typical Installation  
Fig. 2 -- HP Thermostat Typical Installation  
C a t a l o g N o : T B --- N A C --- 1 S I  
Copyright 2007 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231  
Printed in U.S.A.  
Edition Date: 02/07  
Replaces: NEW  
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.  
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T B --- N A C  
T B --- N H P  
Base Series  
Non---Programmable Thermostat  
Homeowner’s Guide  
1. To Select the Mode:  
Use the H/C button to move between the choices. OFF,  
HEAT, COOL, or EMHT will appear on the display. EMHT  
will only appear on heat pump models.  
2. To Select the Fan Operation:  
Use the FAN button to move between continuous fan  
(indicated by the FAN ON icon) and auto fan operation.  
3. To Read the Room Temperature:  
The large display reads room temperature until a button is  
pressed.  
4. To Adjust the Setpoint:  
In normal operation, the large display shows room  
temperature. At the first press of the UP or DOWN button,  
the large display shows the current setpoint and the SET  
TEMP icon is turned on. Further presses of the UP or  
DOWN button adjust the setpoint upward or downward.  
Five seconds after the last button press, the display returns  
to the room temperature and the SET TEMP icon turns off.  
A07108  
Base Non---Programmable Thermostat  
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Carrier Corporation  
FOR SERVICE OR REPAIR, FOLLOW THESE STEPS IN ORDER:  
FIRST: Contact the installer. You may find their name on the furnace or in your Homeowner’s Packet. If the installer’s name is not known,  
call your builder or home retailer if yours is a new residence.  
SECOND: Contact the nearest distributor. (See telephone yellow pages.)  
THIRD: Contact:  
Carrier Corporation  
Consumer Relations  
P.O. Box 4808  
Syracuse, New York 13221  
Phone: 1--800--428--4326  
Model No. ____________________________________________ Unit Serial No. _________________________________________  
Date of Installation ______________________________________ Installed by ___________________________________________  
Name of Owner ________________________________________ Address of Installation ___________________________________  
THERMOSTAT LIMITED WARRANTY  
FIVE--YEAR LIMITED WARRANTY -- Carrier Corporation (hereinafter referred to as “Company”) warrants this product to be free from  
defects in material and workmanship. If a defect is found within five years from date of original installation of product (whether or not actual  
use begins on that date) Company will provide a new or remanufactured part, at Company’s sole option, to replace any defective part, without  
charge for the part itself.  
This warranty does not include labor or other costs incurred for diagnosing, repairing, removing, installing, shipping, servicing or handling of  
either defective parts or replacement parts.  
WARRANTY CONDITIONS:  
5. Warranties apply only to products in their original installation location.  
6. Installation, use, care, and maintenance must be normal and in accordance with instructions contained in the Owner’s Manual and  
Company’s service information.  
7. Defective parts must be returned to the distributor through a registered servicing dealer for credit.  
8. All work shall be performed during normal working hours.  
LIMITATIONS OF WARRANTIES -- ALL IMPLIED WARRANTIES (INCLUDING IMPLIED WARRANTIES OF  
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE) ARE HEREBY LIMITED IN DURATION TO THE  
PERIOD FOR WHICH THE LIMITED WARRANTY IS GIVEN AND APPLIES. SOME STATES DO NOT ALLOW  
LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE MAY NOT APPLY TO YOU. THE  
EXPRESSED WARRANTIES MADE IN THIS WARRANTY ARE EXCLUSIVE AND MAY NOT BE ALTERED, ENLARGED,  
OR CHANGED BY ANY DISTRIBUTOR, DEALER, OR OTHER PERSON, WHATSOEVER.  
COMPANY WILL NOT BE RESPONSIBLE FOR:  
1. Normal maintenance as outlined in the installation and servicing instructions or Owner’s Manual, including filter cleaning and/or  
replacement and lubrication.  
2. Damage or repairs required as a consequence of faulty installation, misapplication, abuse, improper servicing, unauthorized alteration  
or improper operation.  
3. Failure to start due to voltage conditions, blown fuses, open circuit breakers, or damages due to the inadequacy or interruption of  
electrical service.  
4. Damage as a result of floods, winds, fires, lightning, accidents, corrosive environments or other conditions beyond the control of  
Company.  
5. Parts not supplied or designated by Company, or damages resulting from their use.  
6. Company products installed outside the continental U.S.A., Alaska, Hawaii, and Canada.  
7. Electricity or fuel costs, or increases in electricity or fuel costs from any reason whatsoever, including additional or unusual use of  
supplemental electric heat.  
8. ANY SPECIAL INDIRECT OR CONSEQUENTIAL PROPERTY OR COMMERCIAL DAMAGE OF ANY NATURE  
WHATSOEVER. Some states do not allow the exclusion of incidental or consequential damages, so the above limitation may not  
apply to you.  
This Warranty gives you specific legal rights, and you may also have other rights which vary from state to state.  
Catalog No. 03TS--TA50  
1--03  
49004DP21  
C a t a l o g N o : T B --- N A C --- 1 S I  
Copyright 2007 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231  
Printed in U.S.A.  
Edition Date: 02/07  
Replaces: NEW  
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.  
2
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