SECTION 12: CONTROL METHODS
FIGURE 31: External Wiring Diagram
120 V
1 Ø
120 V 60 Hz
1Ø
60 Hz
L
N
Ground
All burners must be connected to Ground. (Not shown.)
Zone 1 Zone 2 Zone 3Zone 4
EP 301
Pump Do not directly connect the controller relay terminals to the pump motor. Product
damage will result.
IEC contactor (P/N 10050009) rated for the EP 301 pump motor
6 | 4 | 2 | The power supply for the | |
pump must be separate | ||||
|
|
Mfrom the controller supply.
3 | 1 |
|
|
| 230 V | Individual supply for |
5 |
|
|
|
| ||
|
|
|
| pump rated for total | ||
| N |
|
|
| 1 Ø | full load current. |
| L |
|
|
| 60 Hz |
|
|
|
|
|
| ||
| Low voltage thermostats |
| ||||
| located in heated zone. |
| ||||
| Zone | Zone | Zone | Zone | Pressure switch | |
| located at pump. | |||||
| 1 | 2 | 3 |
| 4 | |
|
|
| ||||
12 Vdc
Ground
G | N | L |
|
|
|
N L |
| N L |
| N L |
| N L | N L |
|
|
|
|
|
|
|
|
Z1 | Z2 | Z3 | Z4 PUMP | ||||
System Control
C | C |
| C | C | C |
T1 |
| T2 | T3 | T4 | PS |
FIGURE 32: External Wiring Diagram
120V
1 Ø
60Hz
L
N
Ground
Motor starter (P/N 10050001) rated for
All burners must be connected to Ground. (Not shown.)
Zone 1 Zone 2 Zone 3 Zone 4
120 V
1 Ø
60 Hz
Do not directly connect the controller relay terminals to the pump motor. Product damage will result.
The power supply for the pump must be separate from the controller supply.
OL | 208 - 230 V |
| |
| (or 460 V) |
M | 3 Ø |
L3 | 60 Hz Individual supply |
for pump rated for | |
L2 | total full load current. |
L1 |
|
Low voltage thermostats located in heated zone.
Zone Zone Zone Zone
1 2 3 4
Pressure switch located at pump.
12 Vdc
Ground |
| G | N | L |
| N L |
| N L |
| N L |
| N L | N L |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Z1 | Z2 | Z3 | Z4 PUMP | ||||
System Control
C | C | C | C | C |
T1 | T2 | T3 | T4 | PS |
47
