Honeywell Stud Sensor T7147 User Manual

T7147  
Remote Sensor  
and Override Module  
PRODUCT DATA  
FEATURES  
Locking cover.  
Override key.  
Warmer/Cooler keys on some models.  
Key-lock override security available.  
APPLICATION  
The T7147 Remote Sensor and Override Module is for  
use with the T7300/Q7300 Programmable Commercial  
Thermostat system. The T7147 provides space temperature  
sensing, switch initiation, and indication of overrides from  
a remote location.  
Contents  
Ordering Information ........................................................  
2
® U.S. Registered Trademark  
Copyright © 2001 Honeywell • All Rights Reserved  
63- 4065- 1  
 
   
T7147 REMOTE SENSOR AND OVERRIDE MODULE  
Mounting  
INSTALLATION  
1.  
Loosen the cover-locking screw with the Allen wrench  
provided and remove the T7147 cover.  
Run wire to the selected location.  
Thread wire through T7147 base semicircular hole.  
Make connections to T7147 (see Wiring section).  
If air drafts occur through the wall opening, eliminate  
them with suitable insulation material.  
Four mounting screws are provided:  
a. 2 self-tapping type for wall mounting.  
b. 2 for outlet box mounting.  
Select the proper screws for the application.  
Fasten the T7147 to the wall or outlet box with screws  
through the T7147 base assembly mounting holes.  
When Installing this Product...  
2.  
3.  
4.  
5.  
1.  
Read these instructions carefully. Failure to follow  
them could 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.  
6.  
3.  
4.  
Installer must be a trained, experienced service  
technician.  
After installation is complete, check out product  
operation as provided in these instructions.  
7.  
8.  
9.  
Replace the cover assembly and tighten the cover-  
locking screw.  
CAUTION  
Electrical Shock or Equipment Damage Hazard.  
Can shock individuals or short equipment  
circuitry.  
WALLPLATE  
OUTLET BOX  
MOUNTING  
SCREW (2)  
Disconnect power supply before installation.  
MOUNTING  
TAB  
(2 INSIDE  
COVER)  
Location  
Select a location on an inside wall away from:  
drafts or dead air spots behind doors and corners.  
hot or cold air ducts.  
radiant heat from the sun or electrical equipment.  
unheated areas behind the thermostat wall.  
COOLER  
3
HOUR  
OCCUPIED  
W
ARMER  
MOUNTING  
TAB SLOT (2)  
Locate the T7147 about 5 ft (1.5 m) above the floor in an  
area with good air circulation within easy reach of users.  
WIRING  
TERMINALS  
COVER  
LOCKING  
SCREW  
M17884  
THERMOSTAT  
Fig. 3. Mounting the T7147.  
3
63-40651  
 
   
T7147 REMOTE SENSOR AND OVERRIDE MODULE  
WIRING  
Averaging Sensors  
CAUTION  
When the controlled zone is a large area, it can be  
advantageous to use a T7147 and several remote  
temperature sensors dispersed throughout the area to obtain  
an average zone temperature signal. (See Fig. 6 and 7.)  
Erratic System Operation Hazard.  
Failure to follow proper wiring practices can  
introduce disruptive electrical interference (noise).  
Keep wiring at least one foot away from large inductive  
loads such as motors line starters, lighting ballasts,  
and large power distribution panels.  
NOTE: Only one T7147 can be used in any one  
T7300/Q7300 system.  
Shielded cable is required in installations where these  
guidelines cannot be met.  
Ground shield only to grounded controller case.  
IMPORTANT  
CA5  
CA4  
CA3  
CA2  
CA1  
GND  
All wiring must comply with local codes and  
ordinances.  
1
NOTES:  
Terminal screws are provided on the device for  
wiring connections.  
Wiring to device is low voltage and need not be  
in conduit unless required by code.  
T
CA5  
CA4  
CA3  
CA2  
CA1  
GND  
1.  
2.  
Connect correct control wires from the Q7300 subbase  
to the T7147 (see Fig. 4 and 5).  
Ensure that Q7300 subbase switch 5 (local/remote  
sensor select switch) is in the OFF position. (Refer to  
the T7300/Q7300 Specification sheet, form 63-4038,  
for details).  
2
T
IMPORTANT  
The ground (GND) connection at the T7147 is  
1
2
CONNECTIONS TO CA3 AND CA4 NOT REQUIRED  
ON T7147A2000.  
required. Use the junction box or conduit for a  
convenient grounding location.  
ROUTE EXCESS WIRING AWAY FROM SENSOR  
ELEMENT FOR OPTIMUM PERFORMANCE.  
M17880  
3.  
4.  
Ensure all connections are tight and secure. Loose or  
intermittent wire connections cause inconsistent system  
operation.  
When installation is complete, perform the checkout  
procedure (see the Checkout section).  
Fig. 4. Connecting wires to T7147.  
63-40651  
4
 
   
T7147 REMOTE SENSOR AND OVERRIDE MODULE  
T7300/Q7300  
T7147  
C1  
CA1  
CA2  
3 HR  
OCCUPIED  
COOLER  
WARMER  
C2  
C3  
C4  
CA3  
CA4  
1
C5  
T
CA5  
T
WARMER/COOLER FUNCTIONS ARE  
NOT AVAILABLE WITH THE T7147A1002.  
1
2
SHIELDED CABLE CAN BE REQUIRED  
IN SOME INSTALLATIONS.  
T
T
T
3
THE GROUND (GND) CONNECTION TO THE T7147  
IS REQUIRED. USE THE JUNCTION BOX OR CONDUIT  
2
GND  
FOR A CONVENIENT GROUNDING LOCATION.  
M10193  
3
Fig. 5. Typical wiring diagram for T7147 used with T7300/Q7300 Thermostat/Subbase.  
T7300/Q7300  
T
T7047C2007  
T
T7047C2007  
T
T
T
T
T
T
T
T
2
C1  
1
2
3
ONLY ONE T7417 ALLOWED  
PER SYSTEM.  
T7147A  
T7047C2007  
T
C2  
T
T
T
SHIELDED CABLE CAN BE  
REQUIRED IN SOME INSTALLATIONS.  
C3  
C4  
C5  
CA3  
THE GROUND (GND) CONNECTION  
TO THE T7417 IS REQUIRED. USE THE  
JUNCTION BOX OR CONDUIT FOR A  
CONVENIENT GROUNDING LOCATION.  
CA1  
CA2  
CA5 GND  
3
CA4  
1
M10194  
Fig. 6. Wiring for T7174 used in a four-temperature sensor averaging application.  
ONLY ONE T7417 ALLOWED  
PER SYSTEM.  
1
2
T7047C2007  
T
T7047C2007  
T
T7047C2007  
T
T7300/  
Q7300  
T
T
T
T
T
T
T
T
T
T
T
SHIELDED CABLE CAN BE  
REQUIRED IN SOME INSTALLATIONS.  
T
T
3
THE GROUND (GND) CONNECTION  
TO THE T7417 IS REQUIRED.  
USE THE JUNCTION BOX OR  
CONDUIT FOR A CONVENIENT  
GROUNDING LOCATION.  
T7047C2007  
T
T7047C2007  
T
T7047C2007  
T
T
2
C1  
C2  
C3  
C4  
T7047C2007  
T
T7047C2007  
T7147A  
T
T
T
T
T
T
T
T
CA3  
CA1  
CA2  
CA5 GND  
3
CA4  
1
C5  
M10195  
Fig. 7. Wiring for T7174 used in a nine-temperature sensor averaging application.  
5
63-40651  
 
     
T7147 REMOTE SENSOR AND OVERRIDE MODULE  
OPERATION  
CHECKOUT  
1.  
Allow the sensor to stabilize to ambient conditions  
before taking a resistance measurement. The sensor  
resistance measurement should be in accordance with  
the device temperature curve (see Fig. 2).  
Sensor  
The remote sensor control element is a negative temperature  
coefficient (NTC) thermistor. As room temperature increases,  
the resistance of the thermistor decreases. As room  
temperature decreases, the resistance of the thermistor  
increases. The T7300 detects the thermistor resistance  
change and controls the space temperature by sequentially  
staging the heating/cooling equipment on and off.  
2.  
3 Hour Occupied  
Check operation of the  
key:  
3 Hour Occupied  
a. Press the  
key once.  
b. The LED above the key turns on.  
Go to the T7300 thermostat and check it to see that the  
3.  
4.  
3 Hr Occupied  
display arrow indicator points to  
Warmer Cooler  
keys:  
.
On models with  
and  
key once.  
Warmer  
Warmer  
NOTE: The T7047C1025 uses the same sensor element.  
a. Press the  
b. The LED above the  
key comes on.  
key turns off and the  
key once.  
Cooler  
c. Press the  
d. The LED above the  
Cooler  
key turns on.  
key.  
3 Hour Occupied  
When correctly wired, pressing the  
Warmer  
LED above the  
3 Hour Occupied  
e. Press the  
3 Hour Occupied  
key  
sends a signal from the T7147 to the T7300/Q7300. Upon  
receipt of this signal, the T7300/Q7300 proceeds into the  
3 Hour Occupied override. In response, the T7300/Q7300  
sends a signal back to the T7147 to turn on the 3 Hour  
Occupied LED. The 3 Hour Occupied LED remains on for  
the duration of the 3 hour override.  
f. The LED above this key turns off, as well as those  
Warmer Cooler  
above either the  
or  
keys.  
5.  
Go to the T7300 thermostat and check to see that the  
3 Hr  
arrow indicator on the display no longer points to  
Occupied  
and has returned to its currently programmed  
occupied or unoccupied period.  
NOTE: For additional details, consult the T7300/Q7300  
Specification sheet, form 63-4038.  
NOTE: If the T7147 does not check out, review the  
wiring and connections between the Q7300  
and the T7147. Replace the T7147 if wiring  
continuity checks out. If the new T7147 does  
not check out, replace the Q7300.  
3 Hour Setpoint Adjust  
3 Hour Occupied  
When wired correctly, pressing the  
key,  
Warmer Cooler  
followed by the  
or  
key sends a signal from the  
6.  
T7147 to the T7300/Q7300. The T7300/Q7300, upon receipt  
of this signal, proceeds into the 3 Hour Setpoint Adjust  
override. In response, the T7300/Q7300 sends a signal back  
to the T7147 that turns on the 3 Hour Occupied LED and the  
appropriate Warmer or Cooler LED. The 3 Hour Occupied  
LED and Warmer or Cooler LED remains on for the duration  
of the 3 hour override.  
Check operation of the complete control system as  
directed in the T7300/Q7300 Specification sheet, form  
63-4038.  
This override may be performed at any time, regardless of  
whether the thermostat system is operating in the occupied  
or unoccupied mode.  
NOTES:  
For additional details, consult the T7300/Q7300  
Specification sheet, form 63-4038.  
Premature exit from either override can be  
3 Hour Occupied  
achieved by pressing the  
key  
again. The T7300 then returns to normal operation.  
63-40651  
6
 
   
7
63-40651  
 
Home and Building Control Home and Building Control  
Honeywell Asia Pacific Inc. Honeywell Europe S.A. Honeywell Latin American  
Honeywell  
Honeywell Limited-Honeywell Limitée  
Room 3213-3225  
Sun Hung Kai Centre  
No. 30 Harbour Road  
Wanchai  
3 Avenue du Bourget  
1140 Brussels  
Belgium  
Region  
480 Sawgrass Corporate Parkway  
Suite 200  
Sunrise FL 33325  
1985 Douglas Drive North  
Golden Valley, MN 55422  
35 Dynamic Drive  
Scarborough, Ontario  
M1V 4Z9  
Hong Kong  
Printed in U.S.A. on recycled  
paper containing at least 10%  
post-consumer paper fibers.  
63-40651 B.B. Rev. 3-01  
 

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