Aprilaire 8400 owner manual Set time and day, Understanding program schedules

Operation & Programming – PROGRAMMABLE MODELS ONLY (8463, 8465, 8466)

Set time and day

1..Press to enter time setting mode. Hour and AM/PM are flashing.

2..Press or to adjust the hour.

3..Press , the minutes flash. Press or

to adjust the minutes.

4.Press , the day flashes. Press or

to adjust day.

5.Press to end. “DONE” will display.

The thermostat will return to normal mode if no key is pressed within 3 seconds.

Understanding program schedules

The daily schedule is split into four sections:

WAKE: 6am-8am – Temperature you would prefer to wake up to, until you leave for the day.

LEAVE: 8am-5pm – Temperature when you are away from the house during the day.

RETURN: 5pm-10pm – Temperature you would prefer to return to, until bedtime.

SLEEP: 10pm-6am – Temperature you would prefer during the night.

The times shown are the defaults. The start time and temperature of each section can be changed to fit your schedule (see page 10).

This thermostat is pre-set to use EnergyStar® program settings (see the chart that follows). We recommend these settings, since they can reduce your heating/ cooling expenses.

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61000651B 8400 Tstat Owners.indd 8 7/23/09 10:43:05 AM