T7147A,G
Remote Space Sensors
and Override Modules
INSTALLATION INSTRUCTIONS
APPLICATION
2000
SPECIFICATIONS
Temperature Sensor: Thermistor-resistor (NTC)
element.
7A
1800
1700
1420 OHMS AT
75°F (24°C)
1600
1500
1400
1300
1200
1100
T71
47G
1000
900
710 OHMS AT
75°F (24°C)
800
700
600
500
10
20
30
40
50
60
70
90
80
°F
100
°C
-10
0
10
20
30
40
TEMPERATURE (DEGREES)
Mounting: Mounts on wall or 2 x 4 in. vertical outlet box
with screws provided.
1-13/16 (46)
14
1800
Sensor Resistance:
Resistance decreases as temperature increases (Fig. 2).
T7147A: 1420 ohms nominal at 75°F (24°C);
resistance changes 15 ohms for each 1°F (0.6°C)
temperature change.
T7147G: 710 ohms nominal at 75°F (24°C);
resistance changes 7.5 ohms for each 1°F (0.6°C)
temperature change.
Dimensions: See Fig. 1.
T7
1900
RESISTANCE (OHMS)
The T7147A,G Remote Space Sensors and Override
Modules are used with T7300/Q7300 Thermostat/
Subbase to provide space temperature control, switch
initiation and override indication from a remote location.
M17730
Fig. 2. T7147 Remote Sensor resistance
change with change in temperature.
INSTALLATION
When Installing this Product...
3-1/4
(83)
4-5/8
(117)
COOLER
TEMPORARY
OCCUPIED WARMER
1.
2.
1
3-13/16
(97)
3.
4.
7/8 (22)
1-1/16 (27)
3/8
(10)
2-7/8 (73)
3-5/8 (92)
1 NOT ALL MODELS HAVE WARMER/COOLER FUNCTION.
M11186A
Fig. 1. T7147 dimensions in in. (mm).
® U.S. Registered Trademark
Copyright © 2001 Honeywell • All Rights Reserved
Read these instructions carefully. Failure to follow
them could 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.
Installer must be a trained, experienced service
technician.
After installation is complete, check out product
operation as provided in these instructions.
CAUTION
Electrical Shock or Equipment Damage
Hazard.
Can shock individuals or short equipment
circuitry.
Disconnect power supply before installation.
62-3049-2
T7147A,G REMOTE SPACE SENSORS AND OVERRIDE MODULES
Location
Connect the correct Q7300 control wires to the T7147 as
shown in Fig. 4 through 9. Be sure all connections are
tight. Loose or intermittent wire connections cause
inconsistent system operation.
Locate the T7147 or remote sensor about 5 ft (1.5m)
above the floor on an inside wall where it is affected by
freely circulating air at average room temperatures.
IMPORTANT
The T7147 ground (GND) connection is
required. Use the junction box or conduit for a
grounding location.
Mounting
1.
2.
3.
4.
5.
6.
Loosen the cover locking screw and remove the
thermostat cover.
Run wire to selected location; thread wire through
semicircular hole in base; and make connections to
the T7147 (see the Wiring section).
Four mounting screws are provided: two selftapping for wall mounting, and two for outlet box
mounting. Select proper screws for the application.
If air drafts occur through the wall opening,
eliminate with suitable material.
Fasten the T7147 on the wall or outlet box with
screws through the thermostat mounting holes.
See Fig. 3.
Replace cover and tighten the cover locking screw.
WALLPLATE
CA5
CA4
CA3
CA2
CA1
GND
2
CA5
CA4
CA3
OUTLET BOX
CA2
CA1
GND
1
MOUNTING
SCREW (2)
T T
MOUNTING
TAB
(2 INSIDE
COVER)
1 ROUTE EXCESS WIRING AWAY FROM SENSOR
ELEMENT FOR OPTIMUM PERFORMANCE.
CO
OLE
R
TE
MPO
OCC RA
UP RY
IED
WAR
MER
2 CONNECTIONS TO CA3 AND CA4 NOT REQUIRED
M17717
ON T7147A2000.
MOUNTING
TAB SLOT (2)
Fig. 4. Connecting wires to T7147.
THERMOSTAT
COVER
LOCKING
SCREW
OPERATION AND CHECKOUT
M10869B
Fig. 3. Mounting the T7147.
Operation
The remote sensor control element is a negative
temperature coefficient (NTC) thermistor. As the room
temperature increases, thermistor resistance decreases.
Wiring
CAUTION
The thermistor resistance change causes the motor,
system logic panel or system transmitter bridge circuit to
become unbalanced. As the electronic motor, system logic
panel or system transmitter circuits react to rebalance the
circuit, damper or valve movement, or heating and/or
cooling equipment sequential staging occurs.
Electrical Shock or Equipment Damage
Hazard.
Can shock individuals or short equipment
circuitry.
Disconnect power supply before installation.
IMPORTANT
All wiring must agree with applicable codes,
ordinances and regulations.
Overrides
Keys on the face of the T7147 can enact override
functions programmed at the T7300/Q7300.
IMPORTANT
• To avoid electrical interference, which can
cause erratic performance, keep wiring runs as
short as possible and do not run thermostat
wires adjacent to the line voltage electrical
distribution systems.
• Use shielded cable (Belden type 8762 or
equivalent for 2-wire and Belden type 8772 or
equivalent for 3-wire).
• The cable shield must be grounded only at the
controlled equipment case.
NOTE: All overrides must be programmed at the
T7300/Q7300. The T7147 cannot change these
programmed settings.
Temporary Occupied
Pressing the Temporary Occupied key sends a signal
from the T7147 to the T7300/Q7300. The T7300
proceeds into an occupied override and sends a signal to
the T7147 that turns on the Temporary Occupied LED.
The LED remains on for the duration of the override.
Refer to instructions supplied with other system
components.
62-3049—2
2
T7147A,G REMOTE SPACE SENSORS AND OVERRIDE MODULES
T7300/Q7300
T7147
C1
CA1
C2
CA2
C3
CA3
C4
CA4
C5
CA5
T
T
T
T
COOLER
WARMER
3 HR
OCCUPIED
1
T
2
1
WARMER/COOLER FUNCTIONS ARE
NOT AVAILABLE WITH THE T7147A1002.
2
SHIELDED CABLE CAN BE REQUIRED
IN SOME INSTALLATIONS.
3
THE GROUND (GND) CONNECTION TO THE T7147
IS REQUIRED. USE THE JUNCTION BOX OR CONDUIT
FOR A CONVENIENT GROUNDING LOCATION.
GND
M10193
3
Fig. 5. Typical wiring diagram for T7147 used with T7300/Q7300 Thermostat/Subbase.
T7300/Q7300
T
T7047C2007
T7047C2007
T
T
T
T
T
T
T
2
C1
T7147A
C2
T
C3
T
T
T
1 A MAXIMUM OF FOUR T7147
ALLOWED PER SYSTEM.
T7047C2007
T
T
2 SHIELDED CABLE CAN BE
REQUIRED IN SOME INSTALLATIONS.
CA1 CA2 CA3 CA4 CA5 GND
3 THE GROUND (GND) CONNECTION
TO THE T7147 IS REQUIRED. USE THE
JUNCTION BOX OR CONDUIT FOR A
CONVENIENT GROUNDING LOCATION.
1
C4
3
C5
M10194BB
Fig. 6. T7147 used in a four-temperature sensor averaging application with T7300/Q7300 Thermostat/Subbase.
T7047C2007
T7300/
Q7300
T
T
T
T
T7047C2007
T
T
T
T
T
1 A MAXIMUM OF FOUR T7147
ALLOWED PER SYSTEM.
T7047C2007
T
T
T
T
T
T
2 SHIELDED CABLE CAN BE
REQUIRED IN SOME INSTALLATIONS.
T
T7047C2007
T
2
T7047C2007
T
3 THE GROUND (GND) CONNECTION
TO THE T7147 IS REQUIRED.
USE THE JUNCTION BOX OR
CONDUIT FOR A CONVENIENT
GROUNDING LOCATION.
T7047C2007
T
T
C1
C2
C3
C4
T7047C2007
T7147A
T
T
T
T
T
T
T7047C2007
T
T
T
CA1 CA2 CA3 CA4 CA5 GND
1
C5
M10195BB
3
Fig. 7. T7147 used in a nine-temperature sensor averaging application with T7300/Q7300 Thermostat/Subbase.
Temporary Setpoint Adjust
NOTES:
—
Pressing the Temporary Occupied key followed by the
Warmer or Cooler key sends a signal from the T7147 to
the T7300/Q7300. The T7300 proceeds into the
programmed setpoint override. and sends a signal to the
T7147 turning on the Temporary Occupied LED with
appropriate Warmer or Cooler LED. The LED remains on
for the override duration.
—
—
3
This override is a 0 to 5 degree offset from
the occupied control point.
The override can be performed at any time
regardless of the mode in which the T7300 is
operating.
Press the override key again to exit the
override feature and return to normal T7300
operation.
62-3049—2
T7147A,G REMOTE SPACE SENSORS AND OVERRIDE MODULES
T7300/
Q7300
T7147G
T7147G
1
THE GROUND (GND) CONNECTION TO
THE T7147 IS REQUIRED. USE THE
JUNCTION BOX OR CONDUIT FOR A
CONVENIENT GROUNDING LOCATION.
2
SHIELDED CABLE CAN BE REQUIRED
IN SOME APPLICATIONS.
2
T
T
T
T
3
C1
T
T
3
1
CA1 CA2 CA3 CA4 CA5 GND
1
CA1 CA2 CA3 CA4 CA5 GND
C2
3 WARMER/COOLER FUNCTIONS
ARE NOT AVAILABLE WITH THE
T7147G2007, G2015.
C3
C4
M10865A
C5
Fig. 8. T7147G in 2-temperature sensor averaging application with T7300/Q7300 Series 2000 Thermostat/Subbase.
T7300/
Q7300
T
T7147G
3
1
1
T
T7147A
T
T7147A
T
T
T
2
C1
CA1 CA2 CA3 CA4 CA5 GND
C2
T
T
4
2
CA1 CA2 CA3 CA4 CA5 GND
2
CA1 CA2 CA3 CA4 CA5 GND
C3
C4
C5
1 T7047C1025 CAN BE SUBSTITUTED FOR T7147A IF REMOTE OVERRIDE IS NOT REQUIRED.
2 THE GROUND (GND) CONNECTION TO THE T7147 IS REQUIRED. USE THE JUNCTION BOX OR CONDUIT FOR A CONVENIENT GROUNDING LOCATION.
3 SHIELDED CABLE CAN BE REQUIRED IN SOME INSTALLATIONS.
4
WARMER/COOLER FUNCTIONS ARE NOT AVAILABLE WITH THE T7147G2007, G2015.
M10866BB
Fig. 9. T7147 in 3-temperature sensor averaging application with T7300/Q7300 Series 2000 Thermostat/Subbase.
Averaging Sensors
3.
For large zone temperature control, use a T7300 with
several remote temperature sensors. The T7300
averages the temperature signals from all the remote
temperature sensors for more comfortable control.
4.
NOTE: Up to four sensors can be used with one
T7300/Q7300 Series 2000 Thermostat.
5.
Calibration
The T7147 Electronic Thermostat or Remote Space
Sensor is accurately calibrated at the factory. It cannot be
field calibrated.
NOTE: If the T7147 does not check out, review
the wiring and connections between the
Q7300 and T7147. Replace the T7147 if
wiring continuity checks out. If the new
T7147 does not check out, replace the
Q7300.
Checkout
Allow the T7147 Remote Sensor and Override Module to
stabilize to ambient conditions before measuring the
resistance:
1. Measure nominal resistance according to the
values described in the Specifications section.
2. Measure the T7147 resistance in accordance with
the temperature curves. See Fig. 2.
Press the Temporary Occupied key once. The LED
turns on. Check that the T7300 displays Temporary
Occupied.
For models with Warmer and Cooler keys, press
the Warmer key once. The Warmer LED turns on.
Press the Cooler key and the Warmer LED turns
off. Press the Cooler key again and the Cooler LED
turns on.
Press the Temporary Occupied key once. All LED
turn off. T7300 Temporary Occupied display turns
off and returns to normal operation.
6.
Check the complete control systems operation as
directed in the associated technical publications.
Home and Building Control Home and Building Control
Honeywell
1985 Douglas Drive North
Golden Valley, MN 55422
62-3049—2
B.B. 2-01
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Scarborough, Ontario
M1V 4Z9
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