Instruction manual

W i r i n g

IMPORTANT: All electrical wiring connections should be made

only by trained personnel using Class 1 wiring, and in strict

accordance with the National Electrical Code and local regula-

tions. Both of the incoming power lines should be fused with

2AG, 0.5 A maximum rated fuses.

The OTC25 controller has built-in circuitry to reduce the

effects of electrical noise (RFI) from various sources;

however, power and signal wires should always be kept

separate. We recommend separating wires into one bundle

for power (from line power and output) and one bundle for

signal (from thermocouple).

The OTC25 power supply accepts 100 through 250 Vac and

120 through 250 Vdc line power without any switch settings

or polarity considerations.

Figure 3. Wiring Connections

M o u n t i n g

Figure 2. Mounting Diagram

Before installing OTC25, ensure gasket seats evenly

around edges of unit and that there are no breaks or tears

in the gasket.

Insert the OTC25 through the front panel cutout, slide

mounting “U” bracket around unit and secure it with the

screws provided.

Gasket should be evenly compressed around all sides to

provide liquid-tight mounting.