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T7147 REMOTE SENSOR AND OVERRIDE MODULE
63-4065—14
WIRING
CAUTION
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.
Shielded cable is required in installations where these
guidelines cannot be met.
Ground shield only to grounded controller case.
IMPORTANT
All wiring must comply with local codes and
ordinances.
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.
1.
Connect correct control wires from the Q7300 subbase
to the T7147 (see Fig. 4 and 5).
2.
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).
IMPORTANT
The ground (GND) connection at the T7147 is
required. Use the junction box or conduit for a
convenient grounding location.
3.
Ensure all connections are tight and secure. Loose or
intermittent wire connections cause inconsistent system
operation.
4.
When installation is complete, perform the checkout
procedure (see the Checkout section).
Averaging Sensors
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.)
NOTE: Only one T7147 can be used in any one
T7300/Q7300 system.
Fig. 4. Connecting wires to T7147.
T
T
CA5 CA4 CA3 CA2 CA1 GND
CONNECTIONS TO CA3 AND CA4 NOT REQUIRED
ON T7147A2000.
ROUTE EXCESS WIRING AWAY FROM SENSOR
ELEMENT FOR OPTIMUM PERFORMANCE.
M17880
1
1
2
2
CA5 CA4 CA3 CA2 CA1 GND