WIRING (cont’d.)
Figure 8 – Typical Wiring Diagram
| Power Circuit |
| Terminal Block |
To | To Other |
Power | Heater |
Curcuit | Groups |
Relay |
|
|
|
| To |
| Step |
| Other |
|
| Heater | |
| Sequencer |
| |
|
| Groups | |
|
|
|
120 Volt Control Voltage
Electronic Resistance Sensing Amplifier for Auxiliary Low Water Cutoff
Hi Limit
Control
Typical 3 Phase Heater Group
Figure 9 – Power Circuit Detail
Low Water
Probe
Figure 10 – Auxiliary Low Water Cutoff
4
