Carrier TB NAC Thermostat User Manual

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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.

Approximately 5 ft (1.5m) from floor.

Close to or in a frequently used room, preferably on an

inside partitioning wall.

On a section of wall without pipes or duct work.

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

Close to a window, on an outside wall, or next to a door

leading to the outside.

Exposed to direct light and heat from the sun, a lamp,

fireplace, or other heat -- 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.

intended to be made at installation and normally are not modified

by the homeowner. Below is a list of available options followed by

a description of each one.

Option 01 -- Equipment Type

Step 2 — Install Thermostat

Option 03 -- Fahrenheit or Centigrade operation

Option 04 -- Enable fan (G) ON with heat (W)

Option 10 -- O (reversing valve) On with Heat or Cool (present

on Heat Pump model only)

WARNING

ELECTRICAL SHOCK HAZARD

Option 13 -- Room temperature offset adjustment

Note that not all configuration option numbers are used in this

product.

Failure to follow this warning could result in personal injury

or death.

To Enter The Configuration Mode:

Before installing thermostat, turn off all power to unit. There

may be more than 1 disconnect.

Press and hold FAN button for approximately 10 sec until room

temperature disappears and the display reads “01”. You are now in

configuration mode.

. Turn OFF all power to unit.

. If an existing thermostat is being replaced:

a. Remove existing thermostat from wall.

NOTE: If FAN button is pressed again, or if no button is pressed

for 2 minutes, the thermostat will exit configuration mode and

return to normal operation. To re -- enter configuration mode, the

FAN button must be pressed and held for 10 sec again.

b. Disconnect wires from existing thermostat, one at a

time. Be careful not to allow wires to fall back into wall.

While in the configuration mode, the temperature display is used to

show both the option number and the selected choice within each

option. Each press of the H/C button alternates between the option

number and the selection within that option. When the

configuration mode is first entered, option 01 is displayed. The up

and down buttons now move between the available option

numbers. Once an option number is selected, press the H/C button

once to display the currently selected choice within that option.

The up and down buttons now move between the available choices

within that option. After the new choice is made, press the H/C

button again to return to the option number display. When finished

with option selections, press FAN button once to exit the

configuration mode.

c. As each wire is disconnected, record wire color and

terminal marking.

d. Discard or recycle old thermostat.

CAUTION

ENVIRONMENTAL HAZARD

Failure to follow this caution may result in environmental

damage.

Mercury is a hazardous waste. Federal regulations require that

Mercury be disposed of properly.

Option 01 — Equipment Type

Selections: with HP thermostat: HP, AC, PH, or PC

with AC thermostat: AC or PC

Meanings:

. Separate front and back (mounting base) assembly of

thermostat.

. Route thermostat wires through hole in mounting base.

Level mounting base against wall (for aesthetic value only,

thermostat need not be level for proper operation) and mark

wall through 2 mounting holes.

PH or PC selects PTAC units (Packaged Terminal Air

Conditioners) which are used in motel rooms and other

rented spaces. When this option is selected, the display

shows only the setpoint, not the room temperature. Also

the compressor timeguard is disabled, allowing the

compressor to turn on immediately when a demand is

established.

. Drill two 3/16 -- in. mounting holes in wall where marked.

. Secure mounting base to wall with 2 anchors and screws

provided making sure all wires extend through hole in

plastic.

HP or PH controls 1 speed heat pump with 1 stage of aux heat.

AC or PC controls 1 speed air conditioner with one stage of heat.

Note that this option allows a HP thermostat to be converted to

control an AC system.

. Strip 1/4 in. insulation from thermostat wire and adjust

length to reach terminal block connector on mounting base.

Match and connect proper wiring in accordance with wiring

diagrams.

Option 03 — Fahrenheit/Centigrade Selection

This selection operates the thermostat in either Fahrenheit or

Centigrade. Factory default is F.

. Push any excess wire back into wall. Seal hole in wall to

prevent air leaks. Leaks can affect thermostat operation.

Any excess wire left inside thermostat casing may also

affect thermostat operation by interfering with airflow

across the temperature sensor.

Available Selection:

Use UP and DOWN buttons to change between F and C.

Option 04 — G (fan) ON with W (Heat) Selection

This selection determines whether G (fan) output is to be ON or

OFF when 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 from the thermostat to

turn on the blower. In this case, select ON. Factory default is OF

. Snap thermostat together making sure terminal block

connector aligns, and assembly is secure.

0. Turn on power to unit.

On power up, depending on the thermostat model being used, the

LCD readout will display either, AC or PC for air conditioner

model (1 -- stage heat/1 -- stage cool), or HP or PH for heat pump

model (2 -- stage heat/1 -- stage cool).

(off).

Step 3 — Set Thermostat Configuration

Available Selection:

Configuration options allow the installer to configure the

thermostat for a particular installation. These selections are

Use UP and DOWN buttons to change between ON and OFF.

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.

equipment can turn off in less than 3 minutes if a change in

setpoint or a change in mode occurs.

Staging Timer

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

The numbers can range between -- 5 and +5. Factory default is 0.

Available Selection:

“ -- -- ” (two dashes) will be displayed if the thermostat cannot

properly read room temperature. If “ -- -- ” appears, replace

thermostat.

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.

. Press FAN button. This will start continuous fan operation.

FAN annunciator will turn on.

. Press FAN button again. This will stop continuous fan

operation. FAN annunciator will turn off.

Heating Operation

Timeguard Timer

. 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.

. For HP thermostats only, press H/C button until EMHT

emergency heat) appears. Press UP and FAN buttons

(

Cycle Timer

simultaneously to defeat timers. Emergency heating (W is

ON, Y is OFF) should begin immediately.

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

. Press H/C button until COOL is displayed.

. 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

Y, G

--- ---

HP, PH

RVS = C

Y, G, O / B

Y, G

Y, G, W

HP, PH

RVS = H

Y, G, O / B

Y, G, W, O / B

WIRING DIAGRAMS

A06566

A06567

Fig. 1 -- A/C Thermostat Typical Installation

Fig. 2 -- HP Thermostat Typical Installation

Printed in U.S.A.

Edition Date: 02/07

C a t a l o g N o : T B --- N A C --- 1 S I

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Replaces: NEW

T B --- N A C

T B --- N H P

Base Series

Non --- Programmable Thermostat

Homeowner’s Guide

. 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.

. To Select the Fan Operation:

Use the FAN button to move between continuous fan

(indicated by the FAN ON icon) and auto fan operation.

. To Read the Room Temperature:

The large display reads room temperature until a button is

pressed.

. 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

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:

. Warranties apply only to products in their original installation location.

. Installation, use, care, and maintenance must be normal and in accordance with instructions contained in the Owner’s Manual and

Company’s service information.

. Defective parts must be returned to the distributor through a registered servicing dealer for credit.

. 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:

. Normal maintenance as outlined in the installation and servicing instructions or Owner’s Manual, including filter cleaning and/or

replacement and lubrication.

. Damage or repairs required as a consequence of faulty installation, misapplication, abuse, improper servicing, unauthorized alteration

or improper operation.

. Failure to start due to voltage conditions, blown fuses, open circuit breakers, or damages due to the inadequacy or interruption of

electrical service.

. Damage as a result of floods, winds, fires, lightning, accidents, corrosive environments or other conditions beyond the control of

Company.

. Parts not supplied or designated by Company, or damages resulting from their use.

. Company products installed outside the continental U.S.A., Alaska, Hawaii, and Canada.

. Electricity or fuel costs, or increases in electricity or fuel costs from any reason whatsoever, including additional or unusual use of

supplemental electric heat.

. 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

49004DP21

-- 03

Printed in U.S.A.

Edition Date: 02/07

C a t a l o g N o : T B --- N A C --- 1 S I

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Replaces: NEW

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