Honeywell TB8220U

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Step 7. User Setup Number 0330: Daylight Saving Time On or Off.
To change Options, press the Up or Down arrow to the right of the number in the lower right
corner of the screen. Options:
0 — Off. Thermostat time does not adjust automatically for Daylight Saving Time.
1 — On. Thermostat time adjusts automatically for Daylight Saving Time in Fall and Spring.
Step 8. User Setup Number 0540: Programmable Periods per Day.
To change Options, press the Up or Down arrow to the right of the number in the lower right
corner of the screen. Options:
2 — 2 periods per day.
4 — 4 periods per day.
Step 9. User Setup Number 0640: Time Format.
To change Options, press the Up or Down arrow to the right of the number in the lower right
corner of the screen. Options:
12 — 12 hour clock.
24 — 24 hour clock.
Step 10. Exit User Setup
Press DONE to exit Advanced Settings and return to the main screen.