APPLICATION
The Q7100 Thermostat Subbases provide electronic
control of commercial 24 Vac single or multistage heat
pump or conventional heating and cooling systems.
Select models have terminals for light emitting diodes
LEDs, remote temperature sensors and remote setback
timer. The LED models have up to two field configurable
LEDs and up to two factory assigned LEDs. Refer to
Table 1. All Q7100 Thermostat Subbases require a
common wire to the supply power.
Table 1. Description of Q7100 Subbases.
a
Use
T7100
Q7100
AD or F Conventional 1 or 2 1 or 2 8-9
CE or F Heat pump 1, 2 or 3 1 or 2 10-14
DE or F Heat pump 1 or 2 1 or 2 15
a
Depends on the model.
System Heat Cool Figs.
Stages
Q7100A,C,D
Thermostat Subbases
INSTALLATION INSTRUCTIONS
3. Installer must be a trained, experienced service
technician.
4. After completing installation, use these instructions
to check out the product operation.
CAUTION
Disconnect power supply to prevent electrical
shock or equipment damage.
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. 1.
Do not install the subbase 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.
RECYCLING NOTICE
If this control is replacing a control that contains
mercury in a sealed tube, do
control in the trash.
Contact your local waste management authority
for instructions regarding recycling and the proper
disposal of the old thermostat.
INSTALLATION
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.
®U.S. Registered Trademark
Copyright © 1996 Honeywell Inc. • • All Rights Reserved
not
place your old
Subbase with Remote-Mounted Temperature Sensor(s)
Install the subbase in an area that is accessible for
setting and adjusting the temperature and settings.
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. 1.
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.
If more than one remote sensor is required, they must be
arranged in a temperature averaging network consisting
of two, three, four, five or nine sensors. See Fig. 2
through 6.
X-XX UL
69-0931-3
Q7100A,C,D THERMOSTAT SUBBASES
NO
NO
Fig. 1. Typical location of thermostat or remote-mounted sensor.
SUBBASE
TT
T7047GT7047G
T
T
Fig. 2. Two T7047G Sensors providing a
temperature averaging network for a
T7100/Q7100 Thermostat/Subbase.
SUBBASE
TT
T7047C
TT
T
T
M4838
T7047G
YES
5 FEET
[1.5 METERS]
NO
SUBBASE
TT
T7047C
TT
T7047C
TT
Fig. 4. Four T7047C Sensors providing a
temperature averaging network for a
T7100/Q7100 Thermostat Subbase.
SUBBASE
TT
T7047G
T7047G
M10074
T7047C
TT
T7047C
TT
M4840
T7047C
TT
Fig. 3. Two T7047C Sensors and one T7047G Sensor
providing a temperature averaging network
for a T7100/Q7100 Thermostat/Subbase.
TT
M4839
69-0931—3
T
T7047G
T
Fig. 5. Five T7047G Sensors providing a
temperature averaging network for a
T7100/Q7100 Thermostat/Subbase.
T
T
T7047G
T
T
2
T
T7047G
T
T
T
M4841
Q7100A,C,D THERMOSTAT SUBBASES
M4826
FOR WRAPAROUND
INSERTION STRIP
7/16 IN. (11 MM).
FOR STRAIGHT
INSERTION STRIP
5/16 IN. (8 MM).
SUBBASE
TT
T7047C
TT
T7047C
TT
T7047C
TT
Fig. 6. Nine T7047C Sensors providing a
temperature averaging network for a
T7100/Q7100 Thermostat/Subbase.
T7047C
TT
T7047C
TT
T7047C
TT
T7047C
TT
T7047C
TT
T7047C
TT
M4842
Subbase Installation
The subbase can be mounted horizontally on the wall or
a 2 in. x 4 in. wiring box. Position the subbase 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 will function properly even
when not level.
2. Use a pencil to mark the mounting holes. See Fig. 7.
3. 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 or wood, drill two
7/32 inch holes. Gently tap anchors (provided) into
the drilled holes until flush with the wall.
4. Position the subbase over the holes, pulling wires
through the wiring opening.
5. Loosely insert the mounting screws into the holes.
6. Tighten mounting screws.
WIRING
All wiring must comply with local electrical codes and
ordinances. Refer to Fig. 9 through 15 for typical
hookups. A letter code is located near each terminal for
identification.
CAUTION
Disconnect power before wiring to prevent
electrical shock or equipment damage.
1. Loosen the terminal screws on the back of the
thermostat and connect the system wires. See
Fig. 8.
IMPORTANT
Use 18 gauge, color-coded thermostat cable for
proper wiring.
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.
WALL
ANCHORS
(2)
WALL
WIRES
THROUGH WALL
LEDS
Fig. 7. Mounting the subbase.
MOUNTING
HOLES
MOUNTING
SCREWS
Fig. 8. Proper wiring technique.
SUBBASE
B
COOL
DAMPER
M6531
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
Fig. 9. Typical hookup of Q7100A1044 in a one-stage
heat and one-stage cool conventional system.
COMPRESSOR
CONTACTOR
FAN
RELAY
HEAT
DAMPER
Y
3
X
W
HEAT
RELAY OR
VALVE COIL
RH
RCOG
1
L1
(HOT)
L2
M4831A
69-0931—3
Q7100A,C,D THERMOSTAT SUBBASES
RC
3
COOL
DAMPER
COMPRESSOR
CONTACTOR 1
2
L1
(HOT)
L2
1
CAUTION:
EQUIPMENT DAMAGE WILL OCCUR IF POWER IS CONNECTED TO THE D TERMINALS.
2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
3
JUMPER RC TERMINAL TO RH TERMINAL WHEN INSTALLED ON A SYSTEM WITH ONE TRANSFORMER
Fig. 10. Typical hookup of Q7100A1010 in a two-stage heat and two-stage cool
SUBBASE
B
COOL
CHANGEOVER
VALVE
Fig. 11. Typical hookup of Q7100C1024 in a one-stage
heat and one-stage cool heat pump system.
FAN
RELAY
HEAT
RELAY
HEAT
CHANGEOVER
VALVE
G
Y2 RH T D
COMPRESSOR
CONTACTOR 2
FAN
RELAY
conventional system with two transformers.
X1
ROW X Y
COMPRESSOR
CONTACTOR
EQUIPMENT
MONITOR
L1
(HOT)
L2
M11088
SUBBASE
W1 B T
HEAT
RELAY 2
HEAT
HEAT
DAMPER
RELAY 1
HEAT
RELAY
Fig. 12. Typical hookup of Q7100D in a one-stage
REMOTE
TEMPERATURE
SENSOR
2
L1
(HOT)
L2
EM. HT.
RELAY
G
FAN
RELAY
W1
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
heat and one-stage cool heat pump system.
1
REMOTE
SETBACK
TIMER
SUBBASE
COMPRESSOR
CONTACTOR
DOY1 GX W2
M4837A
.
EQUIPMENT
MONITOR
L1
(HOT)
L2
REXY1X1
1
M4843A
SUBBASE
W2
X
Fig. 13. Typical hookup of Q7100C1016 in a two-stage heat and one-stage cool heat pump system.
Includes remote temperature sensor and remote setback timer.
69-0931—3
OGY1
W1 R
HEAT
RELAY
FAN
RELAY
AUX.
HEAT
RELAY
HEAT
CHANGEOVER
VALVE
COOL
CHANGEOVER
VALVE
EB
EM. HT.
RELAY
EQUIPMENT
MONITOR
COMPRESSOR
CONTACTOR
4
X1
SENSOR
DD
TT
TIMER
L1
(HOT)
L2
M11089
Q7100A,C,D THERMOSTAT SUBBASES
SUBBASE
REMOTE
SETBACK
TIMER
D
1
REMOTE
SETBACK
TIMER
M4834B
D
1
M4835A
D
OE BW2 Y2
X
COOL
CHANGEOVER
VALVE
1
CAUTION: EQUIPMENT DAMAGE WILL OCCUR IF POWER IS CONNECTED TO THE D TERMINALS.
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
EM. HEAT RELAY DOES NOT CYCLE. TO TURN OFF THE EM. HEAT, GO TO SYSTEM SELECTION AND CHOOSE HEAT.
3
SELECT MODELS HAVE LEDS.
4
X2 AND X4 NEED TO BE JUMPERED TO TERMINAL X.
5
Fig. 14. Typical hookup of Q7100C1008 in a two-stage heat and two-stage cool heat pump system.
HEAT
CHANGEOVER
VALVE
1
CAUTION: EQUIPMENT DAMAGE WILL OCCUR IF POWER IS CONNECTED TO THE D TERMINALS.
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
SELECT MODELS HAVE LEDS.
3
X4 NEEDS TO BE JUMPERED TO TERMINAL X.
4
Fig. 15. Typical hookup of Q7100C1073 in a three-stage heat and one-stage cool heat pump system.
EM. HT.
RELAY
FAN
RELAY
3
G
HEAT
CHANGEOVER
VALVE
HEAT
RELAY 2
W1 Y1
COMPRESSOR
CONTACTOR 2
HEAT
RELAY 1
5
COMPRESSOR
CONTACTOR 1
4
X3
X1X2 X4
EQUIPMENT
MONITOR 2
EQUIPMENT
MONITOR 1
Includes remote temperature sensor and remote setback timer.
SUBBASE
OE W3Y2
XB G
COOL
CHANGEOVER
VALVE
EM. HT.
RELAY
FAN
RELAY
AUX. HT.
RELAY
Y1
COMPRESSOR
CONTACTOR 2
COMPRESSOR
CONTACTOR 1
X3
X1X4
4
EQUIPMENT
MONITOR 2
EQUIPMENT
MONITOR 1
3
Includes remote temperature sensor and remote setback timer.
R
R
REMOTE
TEMPERATURE
SENSOR
T
REMOTE
TEMPERATURE
SENSOR
T
T
L1
(HOT)
L2
2
2
L1
(HOT)
L2
TD
Mounting Thermostat on Subbase
Mount the thermostat on the subbase after the subbase
is installed.
1. Engage tabs at the top of thermostat and subbase.
See Fig. 16.
2. Press lower edge of case to close and latch.
NOTE: To remove the thermostat from the wall, first pull
out at the bottom of the thermostat; remove top
last.
IMPORTANT
Refer to the thermostat installation instructions
for Installer Setup, Settings, Installer Self-Test
and Troubleshooting information.
A. ENGAGE TABS AT TOP OF
THERMOSTAT AND SUBBASE.
B. PRESS LOWER
EDGE OF CASE
TO LATCH.
Fig. 16. Mounting thermostat on subbase.
5
M6799A
69-0931—3
Q7100A,C,D THERMOSTAT SUBBASES
Home and Building Control
Honeywell Inc.
Honeywell Plaza
P.O. Box 524
Minneapolis, MN 55408-0524
69-0931—3
69-0931—3 Rev. 2-98 L. C.
Home and Building Control
Honeywell Limited-Honeywell Limitée
155 Gordon Baker Road
North York, Ontario
M2H 2C9
6
www.honeywell.com
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