X-XX UL
INSTALLATION INSTRUCTIONS
Q7100A,C
Thermostat Subbases
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
LED, remote temperature sensors and a remote setback
timer. The LED models have one or two field configurable
LED and one or two factory assigned LED. Refer to Table
1. All Q7100 Thermostat Subbases require a common
wire to the supply power.
Table 1. Q7100 Subbases.
a
Depends on the model.
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 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.
3. Installer must be a trained, experienced service
technician.
4. After completing installation, use these instructions
to check out the product operation.
CAUTION
Electrical Hazard.
Can cause electrical shock or equipment damage.
Disconnect power supply before installation.
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.
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
Use
Stages
a
Q7100
T7100
System Heat Cool Figs.
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
69-0965-2
69-0965—2
2
Q7100A,C THERMOSTAT SUBBASES
Fig. 3. Two T7047C Sensors and one T7047G Sensor
providing a temperature averaging network
for a T7100/Q7100 Thermostat/Subbase.
M4838
TT
SUBBASE
T
T
T7047GT7047G
T
T
M4839
TT
SUBBASE
TT
T7047C
TT
T7047C
TT
T7047G
M4840
TT
TT
SUBBASE
T7047C
TT
T7047C
TT
T7047C
TT
T7047C
Fig. 4. Four T7047C Sensors providing a
temperature averaging network for a
T7100/Q7100 Thermostat/Subbase.
Fig. 1. Typical location of thermostat or remote-mounted sensor.
5 FEET
[1.5 METERS]
YES
NO
NO
NO
M10074
Fig. 2. Two T7047G Sensors providing a
temperature averaging network for a
T7100/Q7100 Thermostat/Subbase.
69-0965—2
3
Q7100A,C THERMOSTAT SUBBASES
Fig. 6. Nine T7047C Sensors providing a
temperature averaging network for a
T7100/Q7100 Thermostat/Subbase.
Subbase Installation
The subbase can be mounted horizontally on the wall or
a 2 in. x 4 in. wiring box. Position the subbase horizon-
tally 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.
2. Use a pencil to mark the mounting holes. See Fig. 7.
Fig. 5. Five T7047G Sensors providing a
temperature averaging network for a
T7100/Q7100 Thermostat/Subbase.
M4841
TT
SUBBASE
T
T
T7047G
T
T
T7047G
T
T
T7047G
T
T
T7047G
T
T
T7047G
M4842
TT
TT
SUBBASE
T7047C
TT
T7047C
TT
T7047C
TT
T7047C
TT
T7047C
TT
T7047C
TT
T7047C
TT
T7047C
TT
T7047C
WIRES
THROUGH WALL
WALL
LEDS
MOUNTING
HOLES
MOUNTING
SCREWS
M6531
WALL
ANCHORS
(2)
Fig. 7. Mounting the subbase.
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 the mounting screws.
69-0965—2
4
Q7100A,C THERMOSTAT SUBBASES
L1
(HOT)
L2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
1
M4831A
COMPRESSOR
CONTACTOR
FAN
RELAY
RH
O
GYX
W
COOL
DAMPER
SUBBASE
1
B
HEAT
DAMPER
HEAT
RELAY OR
VALVE COIL
RC
L1
(HOT)
L2
CAUTION: EQUIPMENT DAMAGE WILL OCCUR IF POWER IS CONNECTED TO
THE D TERMINALS.
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
JUMPER RC TERMINAL TO RH TERMINAL WHEN INSTALLED ON A SYSTEM WITH ONE TRANSFORMER.
1
M4837A
FAN
RELAY
DOY1 G X W2
COOL
DAMPER
SUBBASE
2
1
RC
HEAT
RELAY 1
Y2 RH T D
REMOTE
TEMPERATURE
SENSOR
HEAT
RELAY 2
W1 B T
COMPRESSOR
CONTACTOR 2
HEAT
DAMPER
L1
(HOT)
L2
2
COMPRESSOR
CONTACTOR 1
3
2
3
REMOTE
SETBACK
TIMER
M4826
FOR WRAPAROUND
INSERTION STRIP
7/16 IN. (11 MM).
FOR STRAIGHT
INSERTION STRIP
5/16 IN. (8 MM).
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
Electrical Hazard.
Can cause electrical shock or equipment damage.
Disconnect power supply before installation.
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.
Fig. 10. Typical hookup of Q7100A1010 in a two-stage heat and
two-stage cool conventional system with two transformers.
Fig. 8. Proper wiring technique.
Fig. 9. Typical hookup of Q7100A1044 in a one-stage
heat and one-stage cool conventional system.
69-0965—2
5
Q7100A,C THERMOSTAT SUBBASES
Fig. 11. Typical hookup of Q7100C1024 in a one-
stage heat and one-stage cool heat pump system.
L1
(HOT)
L2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
1
M4833A
COMPRESSOR
CONTACTOR
FAN
RELAY
ROW X YX1
COOL
CHANGEOVER
VALVE
SUBBASE
1
B
HEAT
CHANGEOVER
VALVE
G
HEAT
RELAY
EQUIPMENT
MONITOR
Fig. 12. Typical hookup of Q7100C1016 in a two-stage heat and one-stage cool heat pump system.
Includes remote temperature sensor and remote setback timer.
L1
(HOT)
L2
M11089A
COMPRESSOR
CONTACTOR
FAN
RELAY
OGY1
COOL
CHANGEOVER
VALVE
HEAT
CHANGEOVER
VALVE
SUBBASE
X
HEAT
RELAY
AUX.
HEAT
RELAY
EM. HT.
RELAY
W1 R
TT
DD
SENSOR
TIMER
EQUIPMENT
MONITOR
X1
EB
W2
CAUTION: EQUIPMENT DAMAGE WILL OCCUR IF POWER
IS CONNECTED TO THE D TERMINALS.
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.
1
1
2
2
3
3
69-0965—2
6
Q7100A,C THERMOSTAT SUBBASES
Fig. 13. Typical hookup of Q7100C1008 in a two-stage heat and two-stage cool heat
pump system. Includes remote temperature sensor and remote setback timer.
L1
(HOT)
L2
M4834B
FAN
RELAY
D
OE W3Y2
COOL
CHANGEOVER
VALVE
SUBBASE
2
XB G
EM. HT.
RELAY
R
T
D
REMOTE
TEMPERATURE
SENSOR
AUX. HT.
RELAY
Y1
T
COMPRESSOR
CONTACTOR 2
CAUTION: EQUIPMENT DAMAGE WILL OCCUR IF POWER IS CONNECTED TO THE D TERMINALS.
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
SELECT MODELS HAVE LED.
X4 NEEDS TO BE JUMPERED TO TERMINAL X.
1
2
REMOTE
SETBACK
TIMER
1
3
COMPRESSOR
CONTACTOR 1
X3
EQUIPMENT
MONITOR 2
EQUIPMENT
MONITOR 1
X1X4
4
3
4
HEAT
CHANGEOVER
VALVE
Fig. 14. Typical hookup of Q7100C1073 in a three-stage heat and one-stage cool heat
pump system. Includes remote temperature sensor and remote setback timer.
L1
(HOT)
L2
M4835B
FAN
RELAY
D
OE BW2 Y2
COOL
CHANGEOVER
VALVE
SUBBASE
2
X
HEAT
RELAY 1
G
EM. HT.
RELAY
R
TD
REMOTE
TEMPERATURE
SENSOR
HEAT
RELAY 2
W1 Y1
T
COMPRESSOR
CONTACTOR 2
HEAT
CHANGEOVER
VALVE
CAUTION: EQUIPMENT DAMAGE. CAN BURN OUT THERMOSTAT. DO NOT CONNECT POWER
TO THE D TERMINAL.
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.
JUMPER W2 TERMINAL TO Y2 TERMINAL AND W1 TERMINAL TO V1 TERMINAL IF THERMOSTAT DOES THE CHANGEOVER.
1
2
REMOTE
SETBACK
TIMER
1
3
66
3
COMPRESSOR
CONTACTOR 1
X3
EQUIPMENT
MONITOR 2
EQUIPMENT
MONITOR 1
X1X2 X4
4
5
5
6
4
69-0965—2
7
Q7100A,C THERMOSTAT SUBBASES
L1
(HOT)
L2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
1
M4843A
COMPRESSOR
CONTACTOR
FAN
RELAY
REXY1X1
SUBBASE
1
W1
HEAT
RELAY
G
EM. HT.
RELAY
EQUIPMENT
MONITOR
M6799A
B.
PRESS LOWER EDGE OF CASE TO LATCH.
A.
ENGAGE TABS AT TOP OF THERMOSTAT AND SUBBASE.
Fig. 15. Typical hookup of Q7100D in a one-stage
heat and one-stage cool heat pump system.
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; then remove
top.
Fig. 16. Mounting thermostat on subbase.
IMPORTANT
Refer to the thermostat installation instructions
for Installer Setup, Settings, Installer Self-Test
and Troubleshooting information.
69-0965—2
8
Q7100A,C THERMOSTAT SUBBASES
69-0965—2 Rev. 12-98 D.S. Printed in Taiwan R.O.C
www.honeywell.com/building/components
/