ELECTRICAL CONFIGURATION TABLE
Boiler | Type |
|
| Voltage Between | Control | Elements | ||||
Nameplate | of |
|
| Boiler Terminal | Circuit | Quantity | Element | |||
Markings | Service |
|
|
| Lugs |
| Voltage | Per | Operating | |
Voltage | Phase |
|
|
|
|
|
| (1 Phase) | Contractor | Voltage |
| 1 |
| L1 | L2 | N | G |
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| 120 | 1 | 208 | ||||
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| 208 |
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208 |
|
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| 120 |
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| |
|
| L1 | L2 | L3 | N | G |
|
|
| |
| 3 | Delta |
|
|
| |||||
|
| (With | 208 | 208 | 208 |
|
| 120 | 1 | 208 |
|
|
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| ||||||
|
| Neutral) |
|
|
| 120 |
|
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|
| 1 |
| L1 | L2 | G |
|
| 120 | 1 | 240 |
|
| 240 |
|
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| |||||
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| ||
240 |
|
| L1 | L2 | L3 | G |
|
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| ||||
| 3 | Delta | 240 | 240 | 240 |
|
| 120 | 1 | 240 |
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|
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| |
480 | 3 | Wye* | L1 | L2 | L3 | G |
| 120 | 1 or 2 | 277 |
480 |
| 480 |
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| 480 |
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| ||
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| |
480 | 3 | Delta | L1 | L2 | L3 | G |
| 120 | 1or 2 | 480 |
480 |
| 480 |
|
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| 480 |
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| ||
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| |
*Neutral lug not necessary and not furnished due to three wire wye connection. This means only three wires (no neutral) brought to boiler due to method of element connection. Elements operate at 277 volts.
Voltage from a conductor to ground (electrical raceway and water pipes) is not measured. No ground lug furnished. If required installer can provide locally.
TYPICAL WIRING DIAGRAMS
The following wiring diagrams are included in this manual to show typical arrangements of electrical components in the control and power circuits by voltage and phase charactreristics. They are to be used as a reference by the installer or servicer in performing their work. A diagram of the boiler wiring is furnished with the boiler.
WIRING DIAGRAM 208V OR 240V
8
