Honeywell T7100D Thermostat User Manual

T7100D,E,F Microelectronic

Commercial Thermostats and

Q7100A,C,D Subbases

PRODUCT DATA

FEATURES

•

Minimum off time for cooling compressor and

heat pumps.

Field configurable (select models) for:

—

°F or °C temperature display;

automatic or manual changeover;

electric or conventional heat fan operation.

•

Up to two light emitting diodes (LEDs) for easy

reference.

Remote temperature sensor and setback timer

capability (select models).

System test simplifies troubleshooting.

APPLICATION

The T7100 Microelectronic Commercial Thermostats and

Q7100 Subbases provide electronic control of 18 to 30 Vac

single zone heating, ventilating and air conditioning

(

HVAC) equipment.

Contents

Application...........................................................................

Features ..............................................................................

Specifications ......................................................................

Ordering Information ...........................................................

Installation ...........................................................................

Wiring ..................................................................................

Settings ...............................................................................

Installer Setup .....................................................................

Installer Self-Test................................................................. 10

Operation ............................................................................ 12

Wiring Diagrams.................................................................. 13

Troubleshooting Guide ........................................................ 15

U.S. Registered Trademark

68-0163-3

•

T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES

Table 3. Maximum Amperes at 18 to 30 Vac.

SPECIFICATIONS

Running

IMPORTANT

The specifications given in this publication do not

Relay

(A)

Inrush (A)

Heat

Cool

.02 to 1.5 3.5 at 200,000 cycles

.02 to 1.5 7.5 at 100,000 cycles

include normal manufacturing tolerances; therefore,

an individual unit may not exactly match the listed

specifications. Also, this product is tested and

calibrated under closely controlled conditions, and

some minor differences in performance can be

expected if those conditions are changed.

Fan, Reversing Valve, .02 to 0.5 2.5 at 200,000 cycles

Emergency Heat

Temperature:

T7100 Models:

See Table 1.

Setpoint Range:

40° to 90°F (4° to 32°C).

Display Range:

Table 1.T7100 Thermostat Models.

Controlled: 30° to 110°F (1° to 43°C).

Outdoor: -30° to 120°F (-34° to 49°C).

Display Updates:

Model

T7100D

T7100E

Use With

Q7100A

System

Fig.

Conventional

Heat pump

17 and 19

Controlled: updated every minute.

Outdoor: displayed on demand and updated every

Q7100C,D

18 and

0 minutes.

Differential:

3°F (1.5°C). Fixed on D and E models.

20-22

T7100F

Q7100A,C,D

Conventional or

heat pump

17-22

2°F (1°C). Adjustable from 2°-10°F (1-5°C) on

F models.

Depends on the model.

Minimum Off Time (Cooling and Heat Pumps):

Q7100 Models:

See Table 2.

minutes ± 0.5.

Operating Ambient Temperature:

0° to 110*F (4° to 43°C).

Table 2. Q7100 Subbase Models.

Stages

Use

Shipping Temperature Range:

Minus 20° to 130°F (-29° to 54°C).

With

Q7100

System

Heat Cool

Fig.

D or F Conventional 1 or 2 1 or 2

17 and 19

Approvals:

European Community Mark (CE) Listed.

E or F Heat pump

1, 2 1 or 2

or 3

18 and

20-22

Depends on the model.

Operating Relative Humidity Range:

5% RH to 90% RH, noncondensing.

Electrical Rating:

Mounting:

Input Power: 18 to 30 Vac, 50/60 Hz.

Load Rating: See Table 3.

The thermostat mounts on a subbase. The subbase mounts

horizontally on a wall or 2 in. x 4 in. outlet box with the screws

provided. Leveling is not required.

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the

TRADELINE® Catalog or price sheets for complete ordering number.

If you have additional questions, need further information, or would like to comment on our products or services, please write or

phone:

Your local Home and Building Control Sales Office (check white pages of your phone directory).

Home and Building Control Customer Logistics

Honeywell Inc., 1985 Douglas Drive North

Minneapolis, Minnesota 55422-4386

In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.

International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,

Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

68-0163—3

T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES

Dimensions:

See Fig. 1.

Location

Subbase Without Remote-Mounted Temperature Sensor

Install the subbase about 5 ft (1.5m) above the floor in an

area with good air circulation at average temperature. See

Fig. 2.

5-5/8 (143)

3-1/4 (83)

1-1/8

29)

(

1/16 (2)

Do not install the subbase where it can be affected by:

(

-1/8

54)

—

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

behind the thermostat.

3-15/16

(100)

1-9/16 (40)

Subbase With Remote-Mounted Temperature Sensor(s)

Install the subbase in an area that is accessible for setting

and adjusting the temperature and settings.

6-1/8 (156)

7/8

(

22)

Install the remote-mounted sensor(s) about 5 ft (1.5m) above

the floor in an area with good air circulation at average

temperature. See Fig. 2.

-1/8

(105)

Do not mount the sensor(s) 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

behind the thermostat.

(13)

M11313

Fig. 1.Thermostat dimensions in in. (mm).

If more than one remote sensor is required, arrange them in a

temperature averaging network consisting of two, three, four,

five or nine sensors. See Fig. 3 through 7.

RECYCLING NOTICE

If this control is replacing a control that contains

mercury in a sealed tube, do not place your old

control in the trash.

Contact your local waste management authority for

instructions on recycling and the proper disposal of

the old thermostat.

YES

FEET

INSTALLATION

[

1.5 METERS]

When Installing this Product…

. Read these instructions carefully. Failure to follow the

instructions can damage the product or cause a

hazardous condition.

. Check the ratings given in the instructions and on the

product to make sure the product is suitable for your

application.

M17106

. Installer must be a trained, experienced service

technician.

Fig. 2.Typical location of thermostat

or remote-mounted sensor.

4. After completing installation, use these instructions to

checkout the product operation.

WARNING

Electrical Shock Hazard.

Power Supply can cause electrical shock.

Disconnect power supply before beginning

installation.

68-0163—3

T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES

SUBBASE

T7047G

M4838

Fig. 3.Two T7047G Sensors providing

temperature averaging network for

T7100/Q7100 Thermostat/Subbase.

M4841

SUBBASE

Fig. 6. Five T7047G Sensors providing

temperature averaging network for

T7100/Q7100 Thermostat/Subbase.

T7047C

SUBBASE

T7047G

T7047C

M4839

Fig. 4.Two T7047C Sensors and one T7047G Sensor

providing temperature averaging network

for T7100/Q7100 Thermostat/Subbase.

T7047C

SUBBASE

T7047C

M4842

Fig. 7. Nine T7047C Sensors providing

temperature averaging network for

T7100/Q7100 Thermostat/Subbase.

T7047C

Subbase Installation

The subbase can be mounted horizontally on the wall or on a 2

in. x 4 in. wiring box.

. Position and level the subbase (for appearance only).

The thermostat functions properly even when not level.

. Use a pencil to mark the mounting holes. See Fig. 8.

. Remove the subbase from the wall and drill two 3/16 inch

holes in the wall (if drywall) as marked. For firmer

material such as plaster, drill two 7/32 inch holes.

. Gently tap anchors (provided) into the drilled holes until

flush with the wall.

M4840

Fig. 5. Four T7047C Sensors providing

temperature averaging network for

T7100/Q7100 Thermostat/Subbase.

. Position the subbase over the holes, pulling wires

through the wiring opening.

. Loosely insert the mounting screws into the holes.

7. Tighten mounting screws.

68-0163—3

T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES

WIRING

WALL

WIRES

THROUGH WALL

All wiring must comply with local electrical codes and

ordinances. Follow equipment manufacturer wiring

instructions when available. Refer to Fig. 16 through 21 for

typical hookups. A letter code is located near each terminal

for identification. Refer to Table 4 for terminal designations.

WALL

ANCHORS

(2)

WARNING

Electrical Shock Hazard.

Power Supply can cause electrical shock.

Disconnect power supply before beginning

installation.

. Loosen the terminal screws on the back of the

thermostat and connect the system wires. See Fig. 9.

MOUNTING

HOLES

IMPORTANT

Use 18 gauge, color-coded thermostat cable for

MOUNTING

SCREWS

LEDS

M6531

proper wiring.

Fig. 8. Mounting the subbase.

2. Securely tighten each terminal screw.

3. Push excess wire back into the hole.

4. Plug the hole with nonflammable insulation to prevent

drafts from affecting the thermostat.

FOR WRAPAROUND

INSERTION STRIP

FOR STRAIGHT INSERTION

STRIP 5/16 IN. (8 MM).

7/16 IN. (11 MM).

M4826

Fig. 9. Proper wiring technique.

Table 4.Terminal Designations and Descriptions.

Standard

Terminal

Designations

Typical Connection

Heating changeover valve or damper

Remote setback timer

Function

Terminal Type

24V powered contact

Dry contact

Output

Input

D, D

Emergency heat relay

Output

Input

24V powered contact

—

Fan relay

Cooling changeover valve

24V system transformer

24V cooling transformer

24V heating transformer

Remote temperature sensor

Heating relay or valve coil

Stage 1 heating relay

Input

—

Input

—

T, T

Input

—

Output

Input

24V powered contact

—

Stage 2 heating relay or auxiliary heat relay

Auxiliary heat relay

X1, X2, X3, X4

Y, Y1

Common

User-defined Light Emitting Diodes (LED)

Compressor contactor 1

Compressor contactor 2

Annunciation

Output

—

24V powered contact

68-0163—3

T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES

Mounting Thermostat on Subbase

SETTINGS

Mount the thermostat on the subbase after the subbase is

installed.

System and Fan Settings

1. Engage the tabs at the top of the thermostat and

subbase. See Fig. 10.

System settings control the thermostat operation as follows:

Em. Heat (Q7100C only): Emergency heat relay is

automatically controlled by the thermostat. The cooling

system is off. The compressor is de-energized.

Heat: The thermostat controls the heating.

Off: Both the heating and cooling are off.

2. Press the lower edge of the case to close and latch.

NOTE: To remove the thermostat from the wall, first pull out

at the bottom of the thermostat then remove the top.

Cool: The thermostat controls the cooling.

Auto: The thermostat automatically changes between

heating and cooling operation, depending on the indoor

temperature.

B. PRESS LOWER EDGE

OF CASE TO LATCH.

Fan settings control the system fan as follows:

On: Fan operates continuously.

ENGAGE

Auto: Equipment controls fan.

TABS AT TOP OF

THERMOSTAT AND SUBBASE.

M6799A

The system default setting is Heat and the fan default setting

is Auto. Use the keys to change to the desired settings.

See Fig. 11.

Fig. 10. Mounting thermostat on subbase.

NOTE: Always press the keys with your fingertip or similar

blunt tool. Sharp instruments like a pen or pencil

point can damage the keyboard.

Using Thermostat Keys

The thermostat keys are used to:

•

set temperature,

display present setting,

configure Installer Setup,

check Self-Test.

Temperature Settings

The default setpoint for heat is 70°F (21°C) and for cool is

8°F (25.5°C). Press the increase ▲ or decrease ▲ key to

Select models have keys to:

change the present setting. To change between heat and

cool, press the Information i key until the setting to be

changed appears. Press the increase ▲ or decrease ▲ key to

adjust the setting.

•

temporarily override the temperature,

set the system operation,

set the fan operation.

See Fig. 11 for the location of the keys.

Override Temperature Settings

(Select Models)

DISPLAY PRESENT SETTINGS AND

SCROLLS THROUGH INSTALLER

SETUP (INFORMATION KEY)

The T7100 temperature settings can be overridden in three

ways:

CHANGE TEMPERATURE

SETTING TEMPORARILY

—

Using the Override key (T7100F only), acting as a toggle.

Using a remote setback timer.

Using an occupancy sensor.

(SELECT MODELS)

INCREASE TEMPERATURE

SETTING

The temperature settings change based on the Installer

Setup 27.

DECREASE TEMPERATURE

SETTING

SELECT

FAN OPERATION

NOTE: The Installer Setup 27 is factory set at zero degrees

so this setting must be changed for the temperature

to change.

SELECT SYSTEM

OPERATION

M6800C

The Override key temporarily changes the current

temperature to a preset offset. The remote timer and

occupancy sensor opens (temporary setpoint) or closes

Fig. 11.Thermostat key locations, descriptions.

(comfort setpoint) contacts according to the setting.

See Table 5.

Table 5. Examples of Temperature Overrides.

System Comfort

Setting Setpoint

Installer Setup

Number 27 Setting

Temporary

Setpoint

Heat

Cool

68°F

74°F

10°F

58°F

84°F

68-0163—3

T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES

Always check the display to determine if the thermostat is

controlling to the comfort, temporary or remote setpoint.

Temporary is displayed when the Override key is pressed or

the occupancy sensor or remote setback timer is

energized.

—

To advance to the next Installer Setup, press the

Information i key.

To change a setting, use the increase ▲ and decrease

▲ keys.

To exit the Installer Setup, press and hold the Information

i key until the display returns to normal (approximately

three seconds). The display scrolls the numbers

backward to get to the normal display. The Installer Setup

is automatically exited if no key presses are made for five

minutes.

CAUTION

Equipment Damage.

Driving multiple T7100 overrides from a single

source will cause electrical damage.

The override terminals on the T7100 must be

activitated from a dedicated source.

Em Ht Temporary Setting

Aux Ht

Remote

Room

If you need to drive several T7100 Thermostats from a single

source, use an isolation relay at each T710 and connect the

isolation relay contacts to the D terminals of each T7100.

%Humid

Outdoor

Heat Cool

Repl

Batt

Wait

Setting Keypad Lockout Switch

System

Fan

The DIP switch on the back of the thermostat activateds the

Installer Setup lockout feature. DIP switch 1 must be set to the

ON position (up) to activate the lockout feature. See Fig. 12.

The factory setting is off (down). Remove the thermostat from

the wallplate and set the switch to ON if keypad lockout is

desired. The level of lockout is determined by the Installer

Setup number 40.

Em HeatOffCool Auto Only OnAuto

M4844

Fig. 13. LCD display of all segments.

INSTALLER SETUP

NUMBER DISPLAY

(COLUMN 2 OF TABLE 6)

FACTORY SETTING OR

OTHER CHOICE DISPLAY

(COLUMN 3 OR 5 OF TABLE 6)

DIP 1 IS ON

DIP 2 IS NOT USED.

M10235

BACK OF THERMOSTAT

Fig. 12. Set Installer Setup lockout

DIP switch 1 on back of thermostat.

M10407

Fig. 14. Installer Setup and setting display.

INSTALLER SETUP

NOTE: For most applications, the thermostat factory

settings do not need to be changed. Review the

factory settings in Table 6 and if no changes are

necessary, go to the Installer System Test section.

CAUTION

Equipment can be damaged by the system

Equipment Damage.

running without the fan.

Heat pump and electric heat systems must be

configured to 01 in Installer Setup 02.

The Installer Setup is used to customize the thermostat to

specific systems. Installer Setup numbers are listed in Table 6.

The table includes all the configuration options available.

IMPORTANT

Only configurable numbers are shown on the device.

Example: If the thermostat does not have the

changeover feature, Installer Setup 12 is not

displayed. Review Table 6 factory settings and mark

desired changes in the Actual Setting column. When

the Installer Setup is complete, review the settings to

confirm that they match the system.

A combination of key presses is required to use the Installer

Setup features.

—

To enter the Installer Setup, press and hold the

Information i key with the increase ▲ and decrease ▲

keys until the first number is displayed. All display

segments appear for approximately three seconds before

the number is displayed. See Fig. 13 and 14.

68-0163—3

T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES

Table 6.Thermostat Installer Setup Options.

Mode

Number

Other Choices

(Press ▲ or ▲ key to change)

(

Press i

key

Factory-Setting

Description

Actual

to change)

Setting

Select

Display

Description

Application

Conventional

equipment application

Heat pump application (Q7100C,D)

(fan operation is automatically

selected so go to number 03).

(T7100F only).

(Q7100A).

Fan

operation

Conventional applica-

tions where equipment

controls fan operation

in heat mode.

Heat pump and electric heat

applications where thermostat

controls fan operation in heat mode.

a,b

Output stages

of heating.

Depends Stage of heat.

subbase

01, 02 or 01—One stage of heat.

03 02—Two stages of heat.

03—Three stages of heat.

Stage 1.

Stage 2.

Heating cycle

Depends

on model

03, 04, 03—3 cph used for hot water

systems or high efficiency

furnaces.

rate

06, 08,

4—4 cph (factory setting for

heat pump systems).

Stage 3.

—

06—6 cph used for conventional

systems.

Emergency heat.

08—8 cph (factory setting for

conventional systems).

09—9 cph used for electric heat

systems.

Output stages

of cooling

Two stages of cool.

Stage 1 at 4 cph.

Stage 2 at 4 cph.

00 or 01 00—No cooling.

01—One stage cooling.

(T7100F only).

Cooling cycle

rate (T7100F

only).

03—3 cph.

Changeover

System setting key is 01 or 02 01—Heat, Cool, Off (no Auto).

operational. 02—Auto only.

(T7100F only).

Degree

temperature

display.

Temperature is

displayed in °F.

Temperature is displayed in °C.

Displaying

temperature

Temperature is

displayed.

Temperature is not displayed.

(T7100F only).

Extended fan

operation in

heating

No extended fan

operation after the call

for heat ends.

Fan operation is extended

90 seconds after the call for

heat ends.

(T7100F only) .

Extended fan

operation in

cooling

No extended fan

operation after the call

for cool ends.

Fan operation is extended

90 seconds after the call for

cool ends.

(T7100F only).

Fan keys

adjustment

Fan key is operational.

Fan key is continuously in the Auto

position.

(

T7100F only).

Remote sensing

T7100F only).

Remote sensing not

activated.

Remote sensing activated.

(

(continued)

68-0163—3

T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES

Table 6.Thermostat Installer Setup Options (continued).

Mode

Number

Other Choices

(Press ▲ or ▲ key to change)

(

Press i

key

Factory-Setting

Description

Actual

to change)

Setting

Select

Display

Description

Temperature

averaging

network

Temperature

averaging disabled.

Temperature averaging between

local sensor and remote sensor(s)

activated.

T7100F only) .

(

Keypad lockout

level (T7100F).

No lockout.

1-2

1—View setpoints only.

2—Lockout all keys.

Heating/cooling

override

No temperature

change when override

key pressed.

01 - 15

°F the temperature setting is

changed when the override key is

pressed. Temporary is displayed.

(

T7100F only).

Deadband

T7100F only).

Heating and cooling

setpoints can be set

no closer than 2°F.

03 - 10

00 - 12

Heating and cooling setpoints can

be set no closer than the chosen

value.

(

Interstage

control point

01 (Con- Temperature has to

ventional) change 1°F or 2°F

Temperature has to change the

chosen value before the system

calls for the next stage.

(T7100F select

before the system

02 (Heat calls for the next

pump). stage.

models only).

Minimum on

time

2-minute minimum on 00 or 01 No minimum on time or 1 minute

time for heating and minimum on time for heating and

cooling. cooling.

(T7100F only).

Minimum off

time for the

compressor.

4-minute minimum off 00, 01,

Minimum number of minutes

(0 thru 5) the compressor is off

between calls for the compressor.

time for the

compressor.

02, 03

or 05

Temperature

range stops in

heating

Highest heating

setpoint allowed.

40 - 89

46 - 99

01 - 06

Temperature range

(1°F increments) for heating

setpoint.

(T7100F only).

Temperature

range stops in

cooling

Lowest cooling

setpoint allowed.

Temperature range

(1°F increments) for cooling

setpoint.

(T7100F only).

Temperature

display

adjustment.

No difference in

displayed temperature

and actual room

temperature.

01—Display adjusts to 1°F higher

than actual room temperature.

02—Display adjusts to 2°F higher

than actual room temperature.

03—Display adjusts to 3°F higher

than actual room temperature.

04—Display adjusts to 1°F lower

than actual room temperature.

05—Display adjusts to 2°F lower

than actual room temperature.

06—Display adjusts to 3°F lower

than actual room temperature.

Minimum off

times in heating

2 minute minimum off 00, 01,

Minimum number of minutes

(0 thru 5) the heating equipment will

be off between calls for heat.

time.

03, 04

or 05

(T7100F only).

Available on select models.

Number 02 must be set to 01 to extend fan operation.

Number 22 must be set to 01 and remote sensor(s) must be installed.

Keypad lockout is enabled and disabled by DIP switch 1 on back of thermostat.

IMPORTANT

Review the settings to confirm that they match the system. Press i to exit the Installer Setup.

68-0163—3

T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES

NOTE: Press and hold the increase ▲ and decrease ▲ keys

INSTALLER SELF-TEST

together for three seconds to exit the Self-Test. The

Self-Test times out after five minutes without any key

presses.

Use the Installer Self-Test to check the thermostat

configurations and operation. Refer to Table 7 for a list of the

available Self-Tests.

Thermostat Information

. Press the Information i key to access the thermostat

information.

To start the Self-Test:

NOTE: The minimum off time for compressors is bypassed

during the Installer Self-Test.

Press and hold the increase ▲ and decrease ▲ keys at the

same time until two zeros appear. All segments of the LCD will

be displayed before the two zeros appear. See Fig. 15 and 16.

Em Ht Temporary Setting

Aux Ht

Remote

Room

%Humid

M4864

Outdoor

Heat Cool

Repl

. Press the increase ▲ key to display the production date

code. The first two large digits are the month and the

third digit is the last digit of the year

Batt

Wait

System

Fan

Em HeatOffCool Auto Only OnAuto

(Example: 026=February 1996).

M4844

Fig. 15. LCD display of all segments.

IMPORTANT

Models with system and fan switches must set the

switches to the equipment that is being checked for

the equipment to operate.

M4866

. Press the increase ▲ key again to display the software

identification code. (Example: 02 = software ID code 2).

M6792A

TEST NUMBER

Fig. 16.Test number display.

Table 7.Tests available in the Installer Self-Test.

Test

Number

M4865

. Press the increase ▲ key again to display the software

revision number (Example: 001=Revision number 1).

Self-Test Description

10-19

0-29

Heating equipment can be turned on and off.

Emergency heat (Q7100C only) equipment can

be turned on and off.

30-39

40-49

60-69

70-79

Cooling equipment can be turned on and off.

Fan equipment can be turned on and off.

Keyboard key tests.

Thermostat information including date code and

software versions are displayed.

M6791

Refer to Table 8 for the directions and results of the specific tests.

68-0163—3

T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES

. Press the increase ▲ key again to display the

EEPROM identification code.

Example: 222 = EEPROM ID 222).

6. Press and hold the increase ▲ and decrease ▲ keys

together, until the room temperature is displayed, to exit

the Self-Test. The Self-Test times out after five minutes

without any key presses.

(

M4867

Table 8. Installer Self-Test Options.

Description

Key to

Press

Test

Number

Heating Equipment Self-Test

Enter heating equipment Self-Test.

▲

Stage-one heat turns on. When Installer Setup number 01 is 01 or 02 is 01, the system fan is

also energized.

▲

Stage-two heat turns on. Stage-one heat and system fan remain on.

Stage-three heat turns on. Stage-one and stage-two heat remain on.

Stage-three heat turns off.

Stage-two heat turns off.

Stage-one heat and system fan turn off.

Emergency Heating Equipment Self-Test (with select models of Q7100C subbase)

Change from heating to emergency heating equipment Self-Test.

Emergency heat turns on. System fan also turns on.

Emergency heat turns off.

▲

Cooling Equipment Self-Test

Change from heating or emergency heating to cooling equipment Self-Test.

Stage-one cool and system fan turn on.

▲

Stage-two cool and system fan turn on.

Stage-two cool and system fan turn off.

Stage-one cool and system fan turn off.

Fan Equipment Self-Test

Change from cooling to fan equipment Self-Test.

▲

Fan turns on.

Fan turns off.

Key Test

▲

Displays 2.

Displays 4.

Displays 3.

Displays 5.

Displays 0.

Displays 1.

▲

Override

System

Fan

Available on select models.

68-0163—3

T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES

Table 9. Conventional Thermostat Sequence of Operation.

OPERATION

Selection

Fan System

Auto Off

Thermal Performance

Call

None

Energize

None

Display

None

During severe weather, the thermostat actually controls closer

to the setpoint than a electromechanical control. This is

because the heat anticipator is replaced by two electronic

control strategies—cycling by heat anticipation and

proportional plus integral control.

Off

None

Auto Cool

None

and

None

Auto Cool or Stage 1 O, G and Y or O,

Auto Cooling G and Y1

Electronic cycling by heat anticipation acts like a traditional

heat anticipator except that it never needs adjusting for

various control circuit load currents. It cycles off the heating

system slightly before the room temperature reaches the

setpoint to keep the heat remaining in the ductwork from

overheating the room.

Auto Cool or Stage 2 O, G and Y2

Auto

Cooling

Auto Heat

None

Auto Heat or Stage 1 B and W or

Auto heating

and

In severe weather, a conventional control with a heat

anticipator tends to turn off the system too soon so the

effective setpoint is somewhat below the setpoint. In very cold

weather, the difference between setpoint and effective control

point can be 5°F or 6°F (2°C or 3°C) with a conventional

control. This phenomenon is called droop.

_B_a_n_d_W₁a

Auto Heat or Stage 2 B and W2^a

Auto

heating

O or B^b

Auto Auto

None

When Installer Setup 02 is set to 01 (electric heat), G is

energized and the fan symbol is also displayed.

Based on last piece of equipment called (cooling = O or

heating = B) and Installer Setup selection.

Proportional plus integral action eliminates droop by adjusting

the on time of the stage that is cycling longer or shorter until

the control point matches the setpoint. The thermostat

maintains the space temperature within 1°F of the setpoint.

The zero droop performance provides improved occupant

comfort and energy savings. Occupants do not need to

continually adjust thermostat settings to maintain desired

temperature, even during severe weather.

Table 10. Heat Pump Thermostat Sequence of Operation.

Selection

Fan System

Call

None

Energize

None

Display

None

Operation Sequence

Auto Off

The thermostat energizes specific terminals, depending on

the Fan and System settings. The LCD displays the time,

room temperature, system and fan selection. Symbols are

displayed when the heating, cooling or fan is energized. See

Tables 9 and 10 for specific information.

Off

None

Auto Cool

None

Auto Cool or Stage 1 O, G and Y, or O,

Auto Cooling G and Y1

and

Auto Cool or Stage 2 O, G and Y2

and

None

NOTE: Not all the subbase models have all the terminals

listed in the Energize column.

Auto

Cooling

Auto Heat

None

Auto Heat or Stage 1 B and W, B and

Auto

heating W1, or B and Y1^a

and

Auto Heat or Stage 2 B and W2, or B

Auto

heating and Y2^a

and Aux Ht

Auto Heat or Stage 3 B, Y1, Y2

Auto heating and W3

and Aux Ht

Auto Em None B and X1

Heat

Auto Em

Heat

Auto Em

Em Ht

Stage 1 B, X1 and E

heating

and Em Ht

Stage 2 B, X1, E

heating and W2

, Em Ht

Heat

and Aux Ht

O or B^c

Auto Auto

None

Three-stage heat model only.

Aux Ht does not appear if it is a three-stage heat system.

Based on last piece of equipment called (cooling = O or

heating = B) and Installer Setup selection.

68-0163—3

T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES

Minimum-Off Timing

WIRING DIAGRAMS (FIG. 17-22)

A minimum-off timer assures that the cooling compressor or

heat pump compressor does not come on again for at least

five minutes after it turns off. The minimum-off timer is

triggered when the compressor goes off and when the system

switch is changed. If the compressor turns off when the

setpoint is changed, then the minimum-off timer is triggered.

The minimum-off timer operates during the first stage of both

heating and cooling on the heat pump thermostat models and

during cooling only on the standard application models.

SUBBASE

COMPRESSOR

CONTACTOR

HEAT

RELAY OR

VALVE COIL

FAN

RELAY

Emergency Heat (select models)

When the system is set for Emergency Heat, the auxiliary

heat is stage one and the compressor stages are locked off.

Depending on the model, the fan can be activated when

Emergency Heat is used.

COOL

DAMPER

(

HOT)

HEAT

DAMPER

Fan Control

POWER SUPPLY. PROVIDE DISCONNECT MEANS

AND OVERLOAD PROTECTION AS REQUIRED.

The fan is on when these conditions are present (it can take

up to 20 seconds for the fan to turn on):

M4831A

Fig. 17.Typical hookup of Q7100A1044 in a one-stage

heat and one-stage cool conventional system.

Fan On:

The fan is energized continuously.

The fan runs only with the heating and cooling

system.

Fan Auto:

SUBBASE

Select models allow the installer the option of electric or

conventional heat fan operation in the Installer Setup. When

set for electric heat systems, the fan comes on at the same

time as the heat when energized by the thermostat. The fan is

energized by the plenum switch when set for conventional

heating system.

COMPRESSOR

CONTACTOR

FAN

RELAY

Override Temperature (select models)

HEAT

EQUIPMENT

MONITOR

RELAY

The T7100 temperature settings can be overridden when using

the Override key, a remote setback timer, or a occupancy sensor.

When using the override feature, the temperature settings

change according to the Installer Setup 27 setting.

COOL

CHANGEOVER

VALVE

(

HOT)

HEAT

CHANGEOVER

VALVE

When the Override key (select T7100F models) is pressed,

the thermostat temporarily changes from the comfort setpoint

to the temporary setpoint by the amount set in Installer Setup

POWER SUPPLY. PROVIDE DISCONNECT MEANS

AND OVERLOAD PROTECTION AS REQUIRED.

M4833A

7. See Table 11. Pressing the key a second time cancels the

temporary setting.

Fig. 18.Typical hookup of Q7100C1024 in a one-stage

heat and one-stage cool heat pump system.

The normal contact state (comfort setpoint) when using a

remote timer or occupancy sensor is closed. The temporary

contact state (temporary setpoint) is open.

NOTE: Pressing the Override key at any time changes the

state of the contacts.

Table 11. Examples of Temperature Overrides.

System

Setting

Comfort

Setpoint

Installer Setup 27 Temporary

Setting Setpoint

10°F 58°F

Heat

Cool

68°F

74°F

10°F

84°F

Always check the display to determine if the thermostat is

controlling to the comfort, temporary or remote setpoint.

Temporary is displayed when the thermostat is operating at

the temporary setpoint.

68-0163—3

T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES

SUBBASE

COOL

DAMPER

COMPRESSOR

CONTACTOR 2

HEAT

RELAY 2

REMOTE

TEMPERATURE

SENSOR

COMPRESSOR

CONTACTOR 1

FAN

RELAY

HEAT

RELAY 1

HEAT

DAMPER

REMOTE

SETBACK

TIMER

HOT)

(

HOT)

(

CAUTION: EQUIPMENT DAMAGE. CAN BURN OUT THERMOSTAT. DO NOT CONNECT POWER TO THE D TERMINAL.

DO NOT PARALLEL SEVERAL THERMOSTATS FROM A SINGLE SOURCE UNLESS ISOLATION RELAYS ARE USED.

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

JUMPER RC TERMINAL TO RH TERMINAL WHEN INSTALLED ON A SYSTEM WITH ONE TRANSFORMER

M4837B

Fig. 19.Typical hookup of Q7100A1010 in a two-stage heat and two-stage cool

conventional system with two transformers.

SUBBASE

HEAT

COOL

FAN

REMOTE

CHANGEOVER

VALVE

CHANGEOVER

VALVE

RELAY

TEMPERATURE

SENSOR

EQUIPMENT

MONITOR

REMOTE

SETBACK

TIMER

AUXILIARY

HEAT

EM. HT.

RELAY

AUX. HT.

RELAY

COMPRESSOR

CONTRACTOR

(HOT)

CAUTION: EQUIPMENT DAMAGE. CAN BURN OUT THERMOSTAT. DO NOT CONNECT POWER TO THE D TERMINAL.

DO NOT PARALLEL SEVERAL THERMOSTATS FROM A SINGLE SOURCE UNLESS ISOLATION RELAYS ARE USED.

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

EM. HT. RELAY DOES NOT CYCLE TO TURN OFF THE EM. HEAT. GO TO SYSTEM SELECTION AND CHOOSE HEAT.

IF O/B INPUT IS REQUIRED, JUMPER W1 TO Y.

M15324B

Fig. 20.Typical hookup of Q7100C1016 in two-stage heat, one-stage cool heat pump system.

Includes remote temperature sensor, remote setback timer.

SUBBASE

COOL

CHANGEOVER

VALVE

FAN

RELAY

EQUIPMENT

MONITOR 2

HEAT

RELAY 2

COMPRESSOR

CONTACTOR 2

REMOTE

TEMPERATURE

SENSOR

REMOTE

SETBACK

TIMER

EQUIPMENT

MONITOR 1

HEAT

CHANGEOVER

VALVE

EM. HT.

RELAY

HEAT

RELAY 1

COMPRESSOR

CONTACTOR 1

(

HOT)

CAUTION: EQUIPMENT DAMAGE. CAN BURN OUT THERMOSTAT. DO NOT CONNECT POWER TO THE D TERMINAL.

DO NOT PARALLEL SEVERAL THERMOSTATS FROM A SINGLE SOURCE UNLESS ISOLATION RELAYS ARE USED.

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

EM. HEAT RELAY DOES NOT CYCLE. TO TURN OFF THE EM. HEAT, GO TO SYSTEM SELECTION AND CHOOSE HEAT.

SELECT MODELS HAVE LED.

X2 AND X4 NEED TO BE JUMPERED TO TERMINAL X.

IF O/B INPUT IS REQUIRED, JUMPER Y1 TO W1AND Y2 TO W2.

M17152

Fig. 21.Typical hookup of Q7100C1008 in two-stage heat, two-stage cool heat pump system.

Includes remote temperature sensor, remote setback timer.

68-0163—3

T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES

SUBBASE

HEAT

CHANGEOVER

VALVE

EM. HT.

RELAY

AUX. HT.

RELAY

COMPRESSOR

CONTACTOR 1

REMOTE

TEMPERATURE

SENSOR

EQUIPMENT

MONITOR 2

REMOTE

SETBACK

TIMER

COOL

CHANGEOVER

VALVE

FAN

RELAY

COMPRESSOR

CONTACTOR 2

EQUIPMENT

MONITOR 1

(HOT)

CAUTION: EQUIPMENT DAMAGE. CAN BURN OUT THERMOSTAT. DO NOT CONNECT POWER TO THE D TERMINAL.

DO NOT PARALLEL SEVERAL THERMOSTATS FROM A SINGLE SOURCE UNLESS ISOLATION RELAYS ARE USED.

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

SELECT MODELS HAVE LEDS.

X4 NEEDS TO BE JUMPERED TO TERMINAL X.

M15325A

Fig. 22.Typical hookup of Q7100C1073 in three-stage heat, one-stage cool heat pump system.

Includes remote temperature sensor, remote setback timer.

TROUBLESHOOTING GUIDE

Symptom

Possible Cause

Action

Display does not

come on.

Thermostat is not being

powered.

•

Check that X terminal is connected to the system transformer.

Check for 24 Vac between X and R or RH terminals.

—

If missing 24 Vac:

—

Check if the circuit breaker is tripped; if so, reset the circuit

breaker.

—

Check if the system fuse is blown; if so, replace the fuse.

Check if the power switch on the HVAC equipment is in the

Off position; if so, set to the On position.

—

Check wiring between thermostat and HVAC equipment and

replace any broken wires and tighten any loose connections.

—

If 24 Vac is present, proceed with troubleshooting.

Temperature

Room temperature display has Enter Installer Setup 37 and reconfigure the display.

display is incorrect. been reconfigured.

Thermostat is configured for °F Enter Installer Setup 14 and reconfigure the display.

or °C display.

Bad thermostat location.

Relocate the thermostat.

Display shows two dashes and Installer Setup 22 is set for remote sensing and the sensor is missing or

a degree sign. the circuit is open or shorted.

Temperature

The upper or lower temperature Check the temperature setpoints:

settings will not

change. (Example:

Cannot set the

heating higher or

the cooling lower.)

limits were reached.

•

Heating limits are 40 to 90°F (7 to 31°C).

Cooling limits are 45 to 99°F (9 to 37°C).

Heating does not

come on.

No power to the thermostat.

•

Check that X terminal is connected to the system transformer.

Check for 24 Vac between X and R or RH terminals.

—

If missing 24 Vac:

—

Check if the circuit breaker is tripped; if so, reset the circuit

breaker.

—

Check if the system fuse is blown; if so, replace the fuse.

Check if the system switch at the equipment is in the Off

position; if so, set to On position.

—

Check wiring between thermostat and HVAC equipment and

replace any broken wires and tighten any loose connections.

—

If 24 Vac is present, proceed with troubleshooting.

(continued)

68-0163—3

T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES

Troubleshooting Guide (continued)

Symptom

Possible Cause

Action

Heating does not

come on.

Thermostat minimum Off time is • Wait up to five minutes for the system to respond.

activated and wait indicator is

displayed (T7100F only).

•

Enter Installer Setup 38 (T7100F only) and reconfigure minimum On

time (if required).

(continued)

System selection is not set to

Heat.

Set system selection to Heat.

O or B terminal miswired

Check system description to determine whether changeover should be

energized in heat (B) or cool (O). Rewire if necessary.

(select models).

Cooling does not

come on.

No power to the thermostat.

•

Check that X terminal is connected to the system transformer.

Check for 24 Vac between X and R or RC and Y terminals.

—

If missing 24 Vac:

Check if the circuit breaker is tripped; if so, reset the circuit

breaker.

—

Check if the system fuse is blown; if so, replace the fuse.

Check if the system switch at the equipment is in the Off

position; if so, set to the On position.

—

Check wiring between thermostat and HVAC equipment and

replace any broken wires and tighten any loose connections.

—

If 24 Vac is present, proceed with troubleshooting.

Thermostat minimum Off time

is activated.

•

Wait up to five minutes for the system to respond.

Enter Installer Setup 33. Reconfigure minimum Off time

(if required).

System selection is not set

to Cool.

Set system selection to Cool.

O or B terminal miswired

Check system description to determine whether changeover should be

energized in heat (B) or cool (O). Rewire if necessary.

(select models).

Fan operation set for 00

Enter Installer Setup 02 and reconfigure the fan operation.

Wait a minute after seeing the On indicator and then check the registers.

Verify operation of heating equipment in Self-Test.

System on indicator

(

conventional heat) when it

(

flame=heat,

should be set for 01 (electric

heat) (T7100D,F only).

snowflake=cool) is

lit, but no heat is

being delivered.

Conventional heating equip-

ment turns on the fan when the

furnace has warmed up to a

setpoint (T7100D,F only).

Heating equipment is not

operating.

Home and Building Control

Honeywell Inc.

Honeywell Plaza

P.O. Box 524

Minneapolis MN 55408-0524

Home and Building Control

Honeywell Asia Pacific Inc.

Room 3213-3225

Sun Hung Kai Centre

No. 30 Harbour Road

Wanchai

Honeywell Limited-Honeywell Limitée

155 Gordon Baker Road

North York, Ontario

M2H 3N7

Hong Kong

Honeywell Latin American Division

Miami Lakes Headquarters

Honeywell Europe S.A.

3 Avenue du Bourget

1140 Brussels

4505 Commerce Way Suite 500

Miami Lakes FL 33016

Belgium

Printed in U.S.A. on recycled

paper containing at least 10%

8-0163—3 J.S. Rev. 2-99

post-consumer paper fibers.

www.honeywell.com/building/components

8-0163—3