Aprilaire Model 8570 - Manual (Page 35)

2. OFFSET
All thermostats are factory calibrated to be accurate to within
±1° of true temperature. An offset is available to allow for
agreement with field temperature measuring instruments. The
value set will be added to the temperature sensed by the
thermostat. The result will be displayed on the thermostat and
will be used as the control value.
To change the offset:
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 OFFSET” and
press the SELECT button.
4. To cancel, press the BACK button.
5. To change the offset value, press the ▲ or ▼ button to
raise or lower the setting between –4° and +4° (°F or °C).
6. To finish and return to the ADV. SETTINGS MENU, press
the SELECT button.
3. PROGRESSIVE RECOVERY
Progressive Recovery causes the thermostat to bring on the
heating/cooling equipment before the programmed event start
time, in order for the temperature to be at the programmed
value by the programmed time. The feature can be turned on
or off. When turned off, the heating/cooling equipment will
not begin bringing the space temperature to the programmed
value until the start of the event.
To turn Progressive Recovery on or off:
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 “PROGRESSIVE
RECOVERY” and press the SELECT button.
• To cancel, press the BACK button
• To change whether Progressive Recovery is on or off,
press the ▲ or ▼ button to highlight either ON or OFF.
• To finish and return to the ADV. SETTINGS MENU, press
the SELECT button.
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