Aprilaire 8570 Premium Programmable Thermostat Instruction Manual
| General | Details |
|---|---|
| Name | Aprilaire 8570 Premium Programmable Thermostat Instruction Manual |
| Make | Aprilaire |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.57 MB |
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Aprilaire 8570 Manual: Questions and Answers
Can the Aprilaire 8570 be installed in an attic or unventilated equipment room?
No. Do not mount the thermostat where operating range temperatures will be exceeded, such as in an attic or unventilated equipment room. Instruction Manual, p. 4
How many wires does Aprilaire 8570 need for a two-stage furnace and AC?
7 wires. Instruction Manual, p. 4
What's the difference between setting the ELECT/GAS switch to ELECT versus GAS on the Aprilaire 8570?
Set to ELECT for electric heat. Set to GAS for fossil fuel heat.
| Setting | Use |
|---|---|
| ELECT | Electric heat |
| GAS | Fossil fuel heat |
What cable should you run to wire the Aprilaire 8570 to a single-stage furnace and AC?
Run a 5-wire cable from the thermostat to the HVAC equipment. Instruction Manual, p. 7
What do the display messages mean on Aprilaire 8570?
| Display Message | Meaning |
|---|---|
| COOL MODE | Thermostat is set to cooling mode but not calling for cooling |
| COOLING | Thermostat is actively calling for cooling (flashing) |
| EHEAT MODE | Thermostat is set to emergency heat mode but not calling for heat |
| HEATING | Thermostat is actively calling for heat (flashing) |
Why is my outdoor temperature sensor giving erratic readings?
The 2-wire cable may be running alongside line voltage (120 VAC) or higher lines. Run the sensor cable separately from all high-voltage wiring to ensure accurate temperature measurements. Instruction Manual, p. 13
How do I verify the outdoor temperature sensor on Aprilaire 8570 is working before wiring it?
Use an ohmmeter to measure the resistance in kΩ of the sensor wires at the thermostat before connecting to ODT and CIR GND terminals. Compare the resistance reading to the temperature reference table to confirm the sensor matches the current outdoor temperature. Instruction Manual, p. 13
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