Aprilaire Model 8570 installation instructions Customize the Application Settings, Differential

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(10) CUSTOMIZE THE APPLICATION SETTINGS

1. DIFFERENTIAL

Determines the temperature above/below the temperature setting at which the heating or cooling equipment will turn on. For example, a heat temperature setting of 70°F with a differential of 2° will result in the equipment turning on and off to maintain the temperature between 68°F and 70°F. If the second stage differential is also 2°, the second stage would be used to ensure the temperature did not drop below 66°. However, once the second stage is turned on, it will stay on until the temperature again reaches the 70° setting. The default setting for the first stage and second stage differential is 1°.

To change the differential settings:

1.Make sure the thermostat is in the OFF mode.

2.Press and hold both the ▲ and ▼ buttons for 3 seconds.

– The display will show the ADV. SETTINGS MENU.

3.Use the ▲ or ▼ button to highlight “SET DIFFERENTIAL” and press the SELECT button.

–If the thermostat SINGLE/MULTI dip switch is set for MULTI, two differentials will appear, if set for SINGLE, only one will appear.

4.To cancel, press the BACK button. This will return you to the ADV. SETTINGS MENU.

5.To change the first stage differential, press the ▲ and ▼ button to raise or lower the setting. To change the second stage differential, press the SELECT button.

6.To finish and return to the ADV. SETTINGS MENU, press the SELECT button after the value(s) have been set.

–For heat pumps – the auxiliary heat differential is the same as the first stage differential in single-stage heat pump applications and is the same as the second stage differential for two-stage heat pump applications.

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Contents Instructions Table of Contents Thermostat Startup Heat Pumps OnlySafety Instructions Model 8570 Specifications Radiant 1st Stage Heat Wire RequirementsTwo-Stage Furnace/AC 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 line117.6 230.6163.8 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 Thermostat does not call for cooling Troubleshooting Cooling OperationTo Cool and make a call for cooling Check Emergency Heat Operation Heat Pumps Only To Emergency Heat and make a call for heatCustomize the Application Settings DifferentialDisplay will show the ADV. Settings Menu Progressive RecoveryOffset Balance Points Heat Pumps only Range is 0F to 40FTo delete a character, press the Back button Input Dealer Contact InformationTo delete a number, press the Back button Blower Extension for Humidity Control Press the Menu button DP #10006198 B2203358A BOX 1467 MADISON, WI
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