Aprilaire Model 8570 installation instructions Balance Points Heat Pumps only, Range is 0F to 40F

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4. BALANCE POINTS (HEAT PUMPS ONLY)

This feature is only available when the thermostat has been configured to operate heat pumps (see SET THE CONFIGURATION DIP SWITCHES on page 6) and only when an outdoor temperature is available to the thermostat. Outdoor temperature can come from an AHC or from an outdoor temperature sensor.

The low balance point is the outdoor temperature at or below which the thermostat will lockout the compressor(s) – only auxiliary heat will be used to satisfy heating demands. The high balance point is the outdoor temperature at or above which the thermostat will lockout the auxiliary heat – only compressor heat will be used to satisfy heating demands. Emergency heat operation is unaffected by the high balance point.

To change the balance points:

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 BALANCE POINTS” and press the SELECT button.

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

5.To change the low balance point, press the ▲ or ▼ button to raise or lower the temperature value

(range is 0°F to 40°F).

6.To change the high balance point, press the SELECT button, then press the ▲ or ▼ button to raise or lower the temperature value (range is 40°F to 80°F).

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

Important time saver: If the thermostat is installed as part of a Model 6504 Intelligent Zone System, the balance points only need to be changed at one thermostat. The Model 6504 will share the new settings with all connected thermostats.

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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 Troubleshooting Cooling Operation Thermostat does not call for coolingTo 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 DifferentialProgressive Recovery Display will show the ADV. Settings MenuOffset Balance Points Heat Pumps only Range is 0F to 40FInput Dealer Contact Information To delete a character, press the Back buttonTo delete a number, press the Back button Blower Extension for Humidity Control Press the Menu button DP #10006198 B2203358A BOX 1467 MADISON, WI