NOTE: C &W2 to be connected to electric heat.
SINGLE STAGE
HEAT/COOL THERMOSTAT
R W C G Y
OPTIONAL
C 
Y 
R 
OUTDOOR
SECTION
| TO FIELD | |
| SUPPLIED DISCONNECT | |
| GND | |
| L1 | |
| L2 | |
| L3 | |
| BLOWER | |
| MOTOR | |
FREEZESTAT | ||
BROWN | GREEN | |
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G | BLACK | |
C | ||
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W2 | See Note | |
W1 |
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O |
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Y | BLACK | |
R |
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TERMINAL | ||
BOARD | ||
| AIR HANDLER | |
| SECTION | |
SINGLE STAGE HEAT/COOL THERMOSTAT- NO ECONOMIZER
SINGLE STAGE
HEAT/COOL
THERMOSTAT
R W C G Y
OPTIONAL
C 
Y
R
OUTDOOR
SECTION
NOTES:
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| 1. C & W2 to be connected to electric heat. |
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| 2. Remove BLACK wire from air handler low voltage terminal board |
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| Y terminal and connect to YELLOW wire from economizer. |
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| 3. 2nd Stage refrigerant cooling with optional economizer installed. A 2 |
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| stage thermostat is required for simultaneous operation of the economizer |
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| TO FIELD |
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| and refrigerant system. Connect Y2 from 2 stage thermostat to BLUE |
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| wire from economizer. If installing an economizer in this unit, refer to the |
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| SUPPLIED DISCONNECT |
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| Economizer installation instructions for proper set up and operation. |
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| GND |
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| 4. Heat Pump Economizer Relay. For heat pump applications only, connect B | ||||||||
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| from thermostat to GREY wire from Economizer. Required for proper operation | ||||||||
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| of an economizer (optional) in the heat pump Heating mode. If installing an |
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| L2 |
| economizer in this unit, refer to the Economizer installation instructions for |
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| L3 |
| proper set up and operation. |
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| BLOWER |
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| W7459A | M7415A | |||||
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| MOTER |
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FREEZESTAT |
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| Note 4 | A | B |
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| TR | |||
BLACK |
| 7 | 9 | TR |
| TR 1 |
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B |
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| BLACK | GRY |
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| TR1 | ||||
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| Y1 | YEL |
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| Note 2 | 4 | 6 |
| So |
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| GREEN |
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| JUMPER |
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G |
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| 1 | 3 |
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| GRN | C7400A |
| Sr |
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| WIRE |
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C |
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| BLK |
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W2 |
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| 5 |
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Note 1 |
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W1 |
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O |
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| WHITE |
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| 1 | 2 | 1S |
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Y |
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| ORN |
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| 3 | 4 | 2K |
| T |
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R |
| Y2 | BLUE |
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| 1S | T1MA | ||
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TERMINAL |
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| RED |
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BOARD | AIR HANDLER |
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C7150 |
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| P |
| P1 |
| P1 | |||
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| OPTIONAL |
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| SECTION | M.A.S. |
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| MIN. | ||
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| ECONOMIZER |
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| P POT. | ||
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SINGLE STAGE HEAT/COOL THERMOSTAT- WITH ECONOMIZER
Figure 7. Typical Air conditioner Thermostat Connections
14
