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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 .....................................................................  
1
1
2
2
3
5
6
7
Installer Self-Test................................................................. 10  
Operation ............................................................................ 12  
Wiring Diagrams.................................................................. 13  
Troubleshooting Guide ........................................................ 15  
®
U.S. Registered Trademark  
68-0163-3  
Copyright © 1999 Honeywell Inc.  
• All Rights Reserved  
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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.  
a
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  
1
0 minutes.  
Differential:  
3°F (1.5°C). Fixed on D and E models.  
20-22  
T7100F  
a
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.  
5
minutes ± 0.5.  
Operating Ambient Temperature:  
0° to 110*F (4° to 43°C).  
Table 2. Q7100 Subbase Models.  
a
4
Stages  
Use  
Shipping Temperature Range:  
Minus 20° to 130°F (-29° to 54°C).  
With  
Q7100  
System  
Heat Cool  
Fig.  
A
C
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  
a
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:  
1
2
.
.
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  
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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:  
2
(
-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.  
4
-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.  
1
(13)  
/2  
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  
NO  
NO  
5
FEET  
INSTALLATION  
NO  
[
1.5 METERS]  
When Installing this Product…  
1
. Read these instructions carefully. Failure to follow the  
instructions can damage the product or cause a  
hazardous condition.  
2
. Check the ratings given in the instructions and on the  
product to make sure the product is suitable for your  
application.  
M17106  
3
. 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.  
3
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T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES  
SUBBASE  
SUBBASE  
T
T
T
T
T7047G  
T7047G  
T7047G  
T7047G  
T
T
T
T
T
T
T
T
T7047G  
T
T
T7047G  
T7047G  
M4838  
Fig. 3.Two T7047G Sensors providing  
temperature averaging network for  
T7100/Q7100 Thermostat/Subbase.  
T
T
T
T
M4841  
SUBBASE  
Fig. 6. Five T7047G Sensors providing  
temperature averaging network for  
T7100/Q7100 Thermostat/Subbase.  
T
T
T7047C  
T
SUBBASE  
T
T
T
T7047G  
T7047C  
T
T7047C  
T
T7047C  
T
T
T
T
T
T
T7047C  
T
T
T
T
T7047C  
T
T7047C  
T
T7047C  
T
M4839  
T
T
Fig. 4.Two T7047C Sensors and one T7047G Sensor  
providing temperature averaging network  
for T7100/Q7100 Thermostat/Subbase.  
T7047C  
T
T7047C  
T
T7047C  
T
T
T
SUBBASE  
T
T
T7047C  
T
T7047C  
T
T
T
M4842  
Fig. 7. Nine T7047C Sensors providing  
temperature averaging network for  
T7100/Q7100 Thermostat/Subbase.  
T7047C  
T
T7047C  
T
Subbase Installation  
T
T
The subbase can be mounted horizontally on the wall or on a 2  
in. x 4 in. wiring box.  
1
. 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.  
2
3
M4840  
Fig. 5. Four T7047C Sensors providing  
temperature averaging network for  
T7100/Q7100 Thermostat/Subbase.  
4
5
. Position the subbase over the holes, pulling wires  
through the wiring opening.  
6
. Loosely insert the mounting screws into the holes.  
7. Tighten mounting screws.  
68-0163—3  
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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.  
1
. 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  
B
Output  
Input  
D, D  
E
Emergency heat relay  
Output  
Output  
Output  
Input  
24V powered contact  
24V powered contact  
24V powered contact  
G
Fan relay  
O
Cooling changeover valve  
24V system transformer  
24V cooling transformer  
24V heating transformer  
Remote temperature sensor  
Heating relay or valve coil  
Stage 1 heating relay  
R
RC  
Input  
RH  
Input  
T, T  
Input  
W
Output  
Output  
Output  
Output  
Input  
24V powered contact  
24V powered contact  
24V powered contact  
24V powered contact  
W1  
W2  
Stage 2 heating relay or auxiliary heat relay  
Auxiliary heat relay  
W3  
X
X1, X2, X3, X4  
Y, Y1  
Common  
User-defined Light Emitting Diodes (LED)  
Compressor contactor 1  
Compressor contactor 2  
Annunciation  
Output  
Output  
24V powered contact  
24V powered contact  
Y2  
5
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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.  
A.  
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  
7
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  
i
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  
10°F  
58°F  
84°F  
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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  
ON  
1
(COLUMN 3 OR 5 OF TABLE 6)  
2
1
2
1
DIP 1 IS ON  
2
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.  
7
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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  
Display  
Description  
Application  
01  
00  
Conventional  
equipment application  
01  
Heat pump application (Q7100C,D)  
(fan operation is automatically  
selected so go to number 03).  
(T7100F only).  
(Q7100A).  
Fan  
operation  
02  
03  
00  
Conventional applica-  
tions where equipment  
controls fan operation  
in heat mode.  
01  
Heat pump and electric heat  
applications where thermostat  
controls fan operation in heat mode.  
a,b  
.
Output stages  
of heating.  
Depends Stage of heat.  
on  
subbase  
01, 02 or 01—One stage of heat.  
03 02—Two stages of heat.  
03—Three stages of heat.  
0
4
Stage 1.  
Stage 2.  
Heating cycle  
Depends  
on model  
03, 04, 03—3 cph used for hot water  
systems or high efficiency  
furnaces.  
rate  
a
.
a
06, 08,  
05  
09  
0
4—4 cph (factory setting for  
heat pump systems).  
a
a
Stage 3.  
0
6
06—6 cph used for conventional  
systems.  
07  
09  
Emergency heat.  
08—8 cph (factory setting for  
conventional systems).  
09—9 cph used for electric heat  
systems.  
Output stages  
of cooling  
08  
09  
02  
04  
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  
03—3 cph.  
10  
04  
00  
Changeover  
12  
System setting key is 01 or 02 01—Heat, Cool, Off (no Auto).  
operational. 02—Auto only.  
(T7100F only).  
Degree  
temperature  
display.  
14  
00  
00  
00  
Temperature is  
displayed in °F.  
01  
01  
01  
Temperature is displayed in °C.  
Displaying  
temperature  
15  
19  
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.  
b
(T7100F only) .  
Extended fan  
operation in  
cooling  
20  
00  
No extended fan  
operation after the call  
for cool ends.  
01  
Fan operation is extended  
90 seconds after the call for  
cool ends.  
(T7100F only).  
Fan keys  
adjustment  
21  
22  
00  
00  
Fan key is operational.  
01  
01  
Fan key is continuously in the Auto  
position.  
(
T7100F only).  
Remote sensing  
T7100F only).  
Remote sensing not  
activated.  
Remote sensing activated.  
(
(continued)  
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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  
Display  
Description  
Temperature  
averaging  
network  
23  
00  
Temperature  
averaging disabled.  
01  
Temperature averaging between  
local sensor and remote sensor(s)  
activated.  
c
T7100F only) .  
(
Keypad lockout  
level (T7100F).  
25  
27  
0
No lockout.  
1-2  
1—View setpoints only.  
2—Lockout all keys.  
Heating/cooling  
override  
00  
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).  
30  
31  
02  
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  
or  
before the system  
02 (Heat calls for the next  
pump). stage.  
models only).  
Minimum on  
time  
32  
33  
34  
02  
04  
90  
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  
35  
37  
45  
00  
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  
38  
02  
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).  
a
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.  
b
c
d
IMPORTANT  
Review the settings to confirm that they match the system. Press i to exit the Installer Setup.  
9
68-0163—3  
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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  
1
. 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  
2
. 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  
3
. 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  
4
10-19  
0-29  
Heating equipment can be turned on and off.  
2
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  
10  
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T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES  
5
. 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  
i
10  
11  
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.  
12  
13  
12  
11  
10  
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)  
i
20  
21  
20  
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  
i
30  
31  
32  
31  
30  
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  
i
40  
41  
40  
Change from cooling to fan equipment Self-Test.  
Fan turns on.  
Fan turns off.  
a
Key Test  
i
60  
60  
60  
60  
60  
60  
Displays 2.  
Displays 4.  
Displays 3.  
Displays 5.  
Displays 0.  
Displays 1.  
Override  
a
System  
a
Fan  
a
Available on select models.  
1
1
68-0163—3  
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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.  
On  
Off  
None  
None  
G
O
Auto Cool  
None  
and  
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  
B
a
Auto Heat or Stage 1 B and W or  
Auto heating  
and  
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 and W1a  
Auto Heat or Stage 2 B and W2a  
Auto  
heating  
O or Bb  
Auto Auto  
None  
None  
a
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.  
b
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.  
On  
Off  
None  
None  
G
O
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  
B
Auto Heat or Stage 1 B and W, B and  
Auto  
heating W1, or B and Y1a  
and  
Auto Heat or Stage 2 B and W2, or B  
Auto  
heating and Y2a  
,
,
b
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 Bc  
Auto Auto  
None  
None  
a
b
c
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  
12  
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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  
B
O
G
Y
X
W
RH  
RC  
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  
1
L1  
(
HOT)  
HEAT  
DAMPER  
L2  
Fan Control  
1
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.  
B
O
W
G
X
Y
X1  
R
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  
L1  
(
HOT)  
HEAT  
CHANGEOVER  
VALVE  
L2  
1
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  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS  
AND OVERLOAD PROTECTION AS REQUIRED.  
M4833A  
2
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.  
1
3
68-0163—3  
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T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES  
SUBBASE  
RC  
O
Y1  
Y2  
G
X
W1  
W2  
B
RH  
T
T
D
D
3
COOL  
DAMPER  
COMPRESSOR  
CONTACTOR 2  
HEAT  
RELAY 2  
REMOTE  
TEMPERATURE  
SENSOR  
1
COMPRESSOR  
CONTACTOR 1  
FAN  
RELAY  
HEAT  
RELAY 1  
HEAT  
DAMPER  
REMOTE  
SETBACK  
TIMER  
L1  
L1  
HOT)  
(
HOT)  
(
2
L2  
L2  
2
1
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.  
2
3
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  
W2  
B
X
E
O
W1  
G
Y
X1  
R
T
T
D
D
4
HEAT  
COOL  
FAN  
REMOTE  
CHANGEOVER  
VALVE  
CHANGEOVER  
VALVE  
RELAY  
TEMPERATURE  
SENSOR  
EQUIPMENT  
MONITOR  
REMOTE  
SETBACK  
TIMER  
3
AUXILIARY  
HEAT  
EM. HT.  
RELAY  
AUX. HT.  
RELAY  
COMPRESSOR  
CONTRACTOR  
L1  
(HOT)  
1
2
L2  
1
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.  
2
3
4
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  
X
O
E
G
B
W2  
W1  
Y2  
Y1  
X2  
X4  
X1  
X3  
R
T
T
D
D
6
6
5
COOL  
CHANGEOVER  
VALVE  
FAN  
RELAY  
EQUIPMENT  
MONITOR 2  
HEAT  
RELAY 2  
COMPRESSOR  
CONTACTOR 2  
REMOTE  
TEMPERATURE  
SENSOR  
REMOTE  
SETBACK  
TIMER  
4
3
1
EQUIPMENT  
MONITOR 1  
HEAT  
CHANGEOVER  
VALVE  
EM. HT.  
RELAY  
HEAT  
RELAY 1  
COMPRESSOR  
CONTACTOR 1  
L1  
(
HOT)  
L2  
2
1
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.  
2
3
4
5
6
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  
14  
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T7100D,E,F MICROELECTRONIC COMMERCIAL THERMOSTATS AND Q7100A,C,D SUBBASES  
SUBBASE  
B
X
O
E
G
W3  
Y2  
Y1  
X4  
X1  
X3  
R
T
T
D
D
4
HEAT  
CHANGEOVER  
VALVE  
EM. HT.  
RELAY  
AUX. HT.  
RELAY  
COMPRESSOR  
CONTACTOR 1  
REMOTE  
TEMPERATURE  
SENSOR  
EQUIPMENT  
MONITOR 2  
REMOTE  
SETBACK  
TIMER  
1
3
COOL  
CHANGEOVER  
VALVE  
FAN  
RELAY  
COMPRESSOR  
CONTACTOR 2  
EQUIPMENT  
MONITOR 1  
L1  
(HOT)  
L2  
2
1
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.  
2
3
4
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)  
1
5
68-0163—3  
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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  
1
4505 Commerce Way Suite 500  
Miami Lakes FL 33016  
Belgium  
Printed in U.S.A. on recycled  
paper containing at least 10%  
6
8-0163—3 J.S. Rev. 2-99  
post-consumer paper fibers.  
www.honeywell.com/building/components