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| Furnace Control | [ | 7000 Thermostats | ||
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| ComfortSense |
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| One−Stage |
| Catalog # Y0349 or Y2081 | |||
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| Heat Pump Control | DS |
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| W | O |
| R |
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| On−board link | ||
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| 3 |
| G | ||
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| L |
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| Low voltage thermostat | |
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| W2 | ||
| 4 | L |
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| Y2 | H |
| W1 |
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| Y1 | DH |
| O |
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| O |
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| L |
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| DS | R |
| H |
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2 | C | C |
| D |
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| Y1 |
| B |
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| Y2 |
| Y2 |
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| i− |
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| i+ | G |
| Y1 | 1 | |
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| R |
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| C |
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| W2 |
| T |
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| W1 |
| T |
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1.Thermostat T terminals are used for outdoor sensor input. Use for thermostat’s outdoor temperature display (optional).
2.R to L connection is required for this model when using the ComfortSense® 7000 − catalog number Y0349 only. Resistor Kit (catalog number 47W97) required and ordered separately.
3.Cut on−board link W951 (clippable wire) from R−O HEAT PUMP for heat pump applications.
4.Cut on−board link (clippable wire) DS−R for Humiditrol® or Harmony IIIt applications. This will slow the indoor blower motor to the lowest speed setting. See furnace installation instruction or engineering handbook for lowest fan speed information.
NOTE − For defrost temper with furnace, the optional 67M41 temper kit would be wired between W of from the heat pump control (A175) to the W1 of the furnace control. The kit allows for the furnace to cycle on and off during a defrost. It protects the compressor from high refrigeration pressures during defrost.
Figure 18. ComfortSense® 7000 Series Thermostat Furnace/One−Stage Heat Pump
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