TYPICAL 24V, 5 WIRE, CONVENTIONAL HEATING AND COOLING
SYSTEMS WITH 2 STAGE HEAT AND 1 STAGE COOL
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A | RH | W2 | RC | G |
| Y | W1 | O | B | C |
| RH | W2 |
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| G | Y | W1 |
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| C |
| R |
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| F | C* | W |
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| O |
12 |
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| P |
V |
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| 6 | H |
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| I |
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| 4 |
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| O |
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| N | |
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| A |
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| L |
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| A/C | HEAT | HEAT |
| SYSTEM |
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| FAN |
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| FIRST | SECOND |
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| UNIT |
| XFMR | |||
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| STAGE | STAGE |
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#5