Installation & Operation Manual
13 Diagrams
Figure 13-1 Ladder Diagram
120VAC |
| JUNCTION BOX |
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| NEUTRAL GROUND |
TERMINAL STRIP |
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| TERMINAL STRIP | |
120V SUPPLY "L" |
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| 120V SUPPLY "N" | |
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| 1 | 2 |
ON / OFF | INTEGRATED CONTROL |
| GND | BLOWER | ||
SWITCH |
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F2 | SYSTEM | SYSTEM |
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| PUMP "L" | PUMP "N" |
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| 3.15A |
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| F1 |
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| GND |
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| BUILDING |
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| RECIRC |
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| 5A | BUILDING |
| PUMP |
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| RECIRC PUMP |
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| RELAY |
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| DHW PUMP |
| DHW |
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| RELAY | DHW | PUMP |
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| DHW |
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| PUMP "L" | PUMP "N" |
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| F3 |
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| TERMINAL | TERMINAL |
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| .8A | 24V DC | STRIP | STRIP |
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| SUPPLY |
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| 120 VAC |
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24 VAC |
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3.5A |
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AW 801 ONLY |
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| CONNECTION BOARD |
| INTEGRATED | |
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| CONTROL | |
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| FLOW | |||
| LWCO |
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| 11 | SWITCH | 12 |
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| CONNECTION BOARD |
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| TANK |
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| THERMOSTAT |
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| 13 |
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| LOW GAS | HIGH GAS |
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| PRESSURE PRESSURE |
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| SWITCH | SWITCH |
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| 10 |
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| LOUVER |
| 5 |
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| RELAY COIL |
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| INTEGRATED | 24VAC |
| 6 |
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| CONTROL |
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| LOUVER |
| 7 |
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| PROVING SWITCH | ||||
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| 8 |
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| X7 |
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| RIBBON CABLE |
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PC INTERFACE |
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| S2 |
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| INLET |
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ALARM BELL | 1 | SENSOR |
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OPERATING | S1a |
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| SENSOR |
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| S1b |
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| BLOCKED | ||||
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| HIGH LIMIT |
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| DRAIN SWITCH | ||||||
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| 2 | SENSOR |
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SILENCING SWITCH | FLUE | S3a |
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| AIR PRESSURE |
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| SENSOR |
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| GAS VALVE |
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| 6 |
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| SWITCH |
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| FLUE |
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| SENSOR |
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13 | CONNECTION |
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| BOARD |
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| GAS VALVE |
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| RELAY | |||
ALARM | 1 |
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CONTACTS | 2 |
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| BLOWER | 1 | ||||||
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| 3 |
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CONTACTS | 4 |
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| 4 | ||
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| 5 | |
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| TR2 |
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TANK | S4 | 16 |
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SENSOR |
| 17 |
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SHIELD |
| 19 |
| CN6 |
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| SPARK | FLAME ROD | |
A |
| 20 |
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| X6 |
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| ROD |
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CASCADE |
| 21 |
| CN6 |
| X6 |
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B |
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SHIELD |
| 22 |
| CN6 |
| X6 |
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| CAUTION |
| HIGH VOLTAGE SPARK LEAD | ||||
BMS + |
| 23 |
| CN6 |
| X6 |
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IN - | 24 |
| CN6 |
| X6 |
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| NOTES: |
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| 1. Where possible, switches are shown without utilities (gas, water or | |||||
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| electricity) connected to the unit. As such, actual switch states may | ||||
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| vary from those shown on diagrams depending upon whether utilities | ||||
RATE + |
| 25 |
| CN6 |
| X6 |
| are connected or a fault condition is present. | ||||
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| 2. See wiring diagram for additional notes. |
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OUT - |
| 26 |
| CN6 | M | X6 |
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SHIELD |
| 27 |
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A |
| 28 | O |
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| BOX DEPICTS | ||||
| D |
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MODBUS |
| 29 | B |
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| OPTIONAL ITEMS | ||||
B |
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SHIELD |
| 30 | U |
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| LOW VOLTAGE | ||||
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| S |
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| 120 VAC |
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| HIGH VOLTAGE |
LBL20149 REV B
72