41
BUILDING |
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MANAGEMENT |
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SYSTEM | B |
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| A |
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| SHIELD |
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LOUVER |
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PROVING |
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SWITCH |
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| 1 | ALARM |
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HEAT |
| 2 | CONTACTS |
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| 3 | RUN TIME |
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EXCHANGER 2 |
| 4 | CONTACTS |
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FLOW SWITCH |
| 5 | LOUVER |
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| 6 | PROVING |
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| 7 | HEX 2 |
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HEAT |
| 8 | FLOW SWITCH | ||
| 9 | HEX 1 |
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EXCHANGER 1 |
| 10 FLOW SWITCH | |||
FLOW SWITCH |
| 11 TANK |
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| 12 THERMOSTAT |
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TANK |
| 13 R |
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THERMOSTAT |
| 14 W ENABLE |
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| LBL20052 REV B | |
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| 15 SHIELD GND | MOD | ||
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| 16 A |
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| 17 B |
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| BUS | ||
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| 18 SHIELD GND | |||
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| 19 | (+) | 0 - 10V INPUT | |
ENABLING DEVICE |
| 20 | |||
| 21 SYSTEM |
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| 22 SENSOR |
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| 23 OUT DOOR |
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SYSTEM SENSOR |
| 24 SENSOR |
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| 25 TANK |
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| 26 SENSOR |
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| 27 SHIELD GND | CASCADE | ||
OUTDOOR SENSOR |
| 28 B |
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| 29 A |
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| 30 SHIELD GND | |||
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TANK SENSOR |
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| SHIELD |
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| MODBUS COMMUNICATION BUS | |||
| BA | TO NEXT BOILER |
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SHIELD | SHIELD |
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FROM PREVIOUS BOILER A | A | TO NEXT BOILER |
B | B |
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Figure 7-3 Low Voltage Field Wiring Connections
7 Field wiring (continued)
Installation & Operation Manual
