Aprilaire Model 8570 installation instructions Open the Thermostat

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(2) OPEN THE THERMOSTAT

Use your hands to pull the thermostat face off of the base. Separate one side at a time. There are latches on either side of the thermostat.

If needed, the thermostat can be pried from the base by inserting a flat-head screwdriver (see Figure 3).

CAUTION

Loss of internal programs may result from static discharge to thermostat circuit board. Avoid touching the circuit board and touch a grounded metal object before handling the thermostat.

Figure 3

INSERT SCREWDRIVER INTO 1 OF 4 SLOTS (2 ARE ON THE TOPSIDE, 2 ARE ON THE BOTTOM SIDE)

USE THE SCREWDRIVER TO SEPARATE THE HOUSINGS. REPEAT ON THE REMAINING 3 SLOTS. NOTE: THE HOUSINGS WILL NOT COMPLETELY SEPARATE. PULL THE HOUSINGS APART WITH YOUR HANDS TO COMPLETELY SEPARATE.

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Contents Instructions Table of Contents Thermostat Startup Heat Pumps OnlySafety Instructions Model 8570 Specifications Wire Requirements Two-Stage Furnace/ACRadiant 1st Stage Heat Single-Stage Heat Pump Two-Stage Heat PumpSelect a Mounting Location Keep the thermostat 18 from an outside wallOpen the Thermostat Mount the Thermostat Base to the Wall AHC Set to HP when installed with heat pumps Wire the Thermostat to the Hvac Equipment Run a cable with the correct number of wiresDiagram 1 Single-Stage Furnace and AC Diagram 2 Two-Stage Furnace and AC Diagram 3 Two-Stage Roof Top Unit Diagram 4 Boiler with AC Page Diagram 6 Single-Stage Heat Pump Diagram 7 Two-Stage Heat Pump Mount the outdoor temperature sensor see Figure Mount above anticipated snow line230.6 163.8117.6 85.4IDS ODT CIR GND Optional Install AN Automatic Humidifier Control AHC Mount the AHC and its outdoor temperature sensor+ I- R C H ODT Mount the indoor temperature sensor IDS ODT CIR GND Thermostat Startup Stand Alone Applications Check FAN Operation From the Main Screen, press the Info buttonTroubleshooting AHC Connection Check Heating Operation Troubleshooting Heating Operation To Cool and make a call for cooling Troubleshooting Cooling OperationThermostat does not call for cooling Check Emergency Heat Operation Heat Pumps Only To Emergency Heat and make a call for heatCustomize the Application Settings DifferentialOffset Progressive RecoveryDisplay will show the ADV. Settings Menu Balance Points Heat Pumps only Range is 0F to 40FTo delete a number, press the Back button Input Dealer Contact InformationTo delete a character, press the Back button Blower Extension for Humidity Control Press the Menu button DP #10006198 B2203358A BOX 1467 MADISON, WI