18
Part Number
VI Wiring — steam |
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| 120 V.A.C. |
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pumped return |
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| SWITCH |
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Figure 9 |
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| TRANSFORMER |
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| THERMOSTAT |
| RELAY COIL |
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Water boiler wiring — |
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| 1K |
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ladder and schematic diagrams |
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| OPERATING CONTROL |
| N H C W B |
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| FLOAT LWCO | MANUAL RESET | |
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| MANUAL RESET | & PUMP | ||
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| 1K1 |
| PROBE LWCO | |||
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| PRESSURETROL PRESSURETROL | CONTROL | ||||
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| CABLE |
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| FUSE |
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| DAMPER |
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| 5 | 5 |
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| 4 | 4 |
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| 2 | 2 |
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| 6 | 6 |
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| 1 | 1 |
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| 2K |
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ELECTRICAL SHOCK HAZARD, CAN CAUSE SEVERE |
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| SEE NOTE 10 |
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INJURY OR DEATH. DISCONNECT POWER |
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| 2K4 |
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BEFORE INSTALLING AND/OR SERVICING. |
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| A1 | A2 |
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NOTES: |
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1. ALL WIRING MUST BE INSTALLED IN ACCORDANCE WITH: |
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| 2K3 |
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A. U.S.A. - NATIONAL ELECTRICAL CODE AND ANY OTHER NATIONAL, STATE OR LOCAL |
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CODE REQUIREMENTS. |
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| 2K2 |
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B. CANADA - C.S.A. C22.1 CANADIAN ELECTRICAL CODE PART 1 AND ANY OTHER |
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NATIONAL, PROVINCIAL OR LOCAL CODE REQUIREMENTS. |
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2. ALL CONTACTS SHOWN WITHOUT POWER |
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3. IF ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED, |
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| 2K1 |
| PILOT |
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TYPE 150 C OR IT’S EQUIVALENT MUST BE USED. |
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| SOLENOID |
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4. REFER TO CONTROL COMPONENT INSTRUCTIONS PACKED WITH BOILER FOR APPLICATION |
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| VALVE |
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INFORMATION. |
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5. THERMOSTAT - FOR SINGLE ZONE SYSTEMS, THERMOSTAT ANTICIPATOR SETTING IS 0.40 AMPS. | LOW VOLTAGE FIELD |
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FOR MULTIPLE ZONE SYSTEMS USING ZONE VALVES OR CIRCULATORS, REFER |
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HIGH VOLTAGE FIELD |
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TO COMPONENT MANUFACTURER’S INSTRUCTIONS FOR APPLICATION WIRING AND |
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THERMOSTAT ANTICIPATOR SETTING. |
| LOW VOLTAGE FACTORY |
| MV/PV |
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EMCS - FOR EMCS CONNECTION IN PLACE OF THERMOSTAT, REFER TO EMCS |
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INSTALLATION/OPERATING MANUAL. |
| HIGH VOLTAGE FACTORY |
| PV |
| D |
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| IGNITION CABLE |
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6. L.W.C.O., PRESSURE CONTROLS, WIRED IN SERIES. |
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| ALARM |
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| ALARM |
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7. DENOTES FIELD INSTALLED CHASSIS GROUND. |
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| 24V | ROBERTSHAW |
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| IGNITION CONTROL MODULE TERMINAL. |
| GAS VALVE |
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8. PILOT LEADWIRES ARE NOT FIELD REPLACEABLE. REPLACE |
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| 24V (G) |
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PILOT ASSEMBLY IF NECESSARY. |
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| IGNITION CONTROL PANEL TERMINAL. |
| SENSE |
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9. OPERATING CONTROL REQUIRED WITH TANKLESS HEATER. |
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| TRANSFORMER TERMINAL. |
| SPARK |
| SENSOR |
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10. ALARM CONTACT RATINGS: 15 AMP @ 250 VAC. |
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11. REMOVE JUMPER BAR BETWEEN TERMINAL "H" AND TERMINAL "C". | R | IGNITION CONTROL PANEL LAMP |
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| IGNITOR |
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