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CONTROL WIRING

General

•

All wiring should conform to the National Electric Code and local

regulations.

•

The total electrical load must not exceed the maximum

rating of the control (see Specifications).

•

Use copper conductors only.

•

Electrical leads should not be taut; allow slack for

temperature change and vibration.

Input and Output Wiring

For typical wiring diagrams, refer to Figures 4, 5 and 6. All connections are

made to the power (lower) circuit board. When using the 24 VAC powered

models, the 24 VAC input lines must enter through the sidewall of the case.

Refer to figure 3 for location of the entry hole.

Figure 7 for wiring.

Analog Output

ETC models are available with an optional 0 to 10 volt analog output. This

signal is a linear representation of the sensor temperature with 0 volts = -30°F

and 10 volts = 220°F. See figure 8 for wiring information and figure 3 for

location of the entry hole. The reference for this output is designated by the

"-" symbol on the wiring diagram. The output signal is designated by the "+"

symbol.

120 VOLT

LOAD

Figure 4:

Typical Line Voltage Wiring Diagram.

240 VOLT

LOAD

Figure 5:

Typical Wiring Diagram for 240 VAC Power Input and

Line Voltage Switching.

Figure 6:

Different Voltage to Control and Different Voltage Load.

240 VAC

120 VAC

240 VAC

120 VAC