10
TC5-8SDA rev.03
TC5-8SDA
TEMPERATURE PROBES
1
Connecting the Probes
The controller is supplied with one temperature probe connected to input
# 1. Three additional room probes can be connected to inputs # 2, 3 and
4 and an outside probe can be connected to input # 5 (see wiring
diagram enclosed).
CAUTION
: Probes operate at low voltage and are isolated from the
supply. Be sure that probe cables remain insulated from all high voltage
sources. In particular, do not route the probe cables through the same
electrical knockout as other cables. Do not connect the shield from the
probe cable to a terminal or a ground.
Switches are used to activate or deactivate
the additional probes connected to the con-
troller.
Activate each additional probe by setting
the appropriate switch to
ON
:
•
Switch # 3 activates the probe connected to input # 2.
•
Switch # 4 activates the probe connected to input # 3.
•
Switch # 5 activates the probe connected to input # 4.
2
Extending the Probes
Each probe can be extended up to 500 feet (150 meters). To extend a
probe:
Use a shielded cable of outside diameter between 0.245 and 0.260
in (6.22 and 6.60 mm) (the cable dimensions should not be under
18 AWG) to ensure the cable entry is liquid tight. Do not ground
the shielding.
3
4
ON
5