MACH® Series | Parts and Technical Support |
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6.1WIRING DIAGRAMS
6.1.1 Terminal Block Assignments – High Voltage Circuit (TB2)
Terminal Number | Label | Description | |
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1 | 115 VAC LINE | Boiler Supply Power, 115 VAC, 60 HZ, 1 ph, 8 amp | |
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2 | 115 VAC NEUTRAL |
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3 | 115 VAC NEUTRAL | Aux. Switched Output | |
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4 | 115 VAC NEUTRAL | Boiler Circ. Pump | |
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5 | 115 VAC NEUTRAL | DHW Circ. Pump | |
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6 | GROUND | Boiler Supply Ground | |
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7 | GROUND | Aux .Ground | |
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8 | GROUND |
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9 | 115 VAC SW. OUTPUT | Aux. Switched Output, Pilot duty only, 1 amp max. | |
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10 | 115 VAC CIRC. PMP | Boiler Circ. Pump, Pilot duty only, 1 amp max. | |
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11 | 115 VAC DHW PMP | DHW Circ. Pump, Pilot Duty only, 1 amp max. | |
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12 | MASTER ALARM RELAY | Dry Contacts, 24 VAC max, 1 amp max. | |
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13 | MASTER ALARM RELAY |
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14 | THREE WAY VALVE RELAY | DHW Dry Contacts, 24 VAC max, 1 amp max. | |
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15 | THREE WAY VALVE RELAY |
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16 | DAMPER RELAY | Combustion Air Damper, Dry Contacts, 24 VAC max, 1 amp | |
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17 | DAMPER RELAY | ||
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