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Operating Manual RTH8500 Touchscreen Programmable Thermostat BE CAREFUL! Never use sharp instruments, such as a pencil or pen, to press touchscreen keys. To prevent damage to the thermostat, always press keys with your fingertip. Need Help? For assistance with this product please visit http://yourhome.honeywell.com or call Honeywell Customer Care toll-free at 1-800-468-1502 Read and save these instructions ® U.S. Registered Trademark. US Patent No. 6,595,430 and other patents pending. Copyright © 2006 Honeywell International Inc. All rights reserved. RTH8500 Table of contents About your new thermostat Thermostat features ..........................2 Programming at a glance..................3 Quick reference to controls ..............4 Quick reference to status display ....5 Appendices Battery replacement ........................18 In case of difficulty ..........................19 Limited warranty ..............................21 Programming & Operation Clock setting ......................................6 Fan setting ........................................7 System setting....................................8 Using program schedules ................9 Program schedule overrides ..........12 Vacation hold ..................................14 Special features ..............................15 Screen cleaning ..............................16 Furnace filter reminder ....................17 This thermostat is ready to go! Your new thermostat is preprogrammed and ready to go. See page 3 to check settings. CAUTION: EQUIPMENT DAMAGE HAZARD. To prevent possible compressor damage, do not operate cooling system when outdoor temperature is below 50°F (10°C). 1 Operating Manual About your new thermostat Congratulations! You've just purchased the world's most advanced, easyto-use thermostat. It has been designed to give you many years of reliable service and touchscreen climate control. Features · · · · · · · 7-day program schedules maximize comfort and economy. Armchair programming: Just pull thermostat from the wall to set schedules. EnergyStar® compliant to greatly reduce your heating/cooling expenses. One-touch temp control overrides program schedule at any time. Precise comfort control keeps temperature within 1°F of the level you set. Change/check reminders let you know when to replace filters and batteries. Large touchscreen display with backlight is easy to read -- even in the dark. 2 RTH8500 This thermostat is ready to go! Your new thermostat is pre-programmed and ready to go. All you have to do is set the time and day. Then check the settings below and change if needed: 1 Set clock......................................................................................See page 6 2 Select fan setting: Preset to Auto ........................To change, see page 7 3 Select system setting: Preset to Heat ..................To change, see page 8 4 Program schedules: Preset to energy-saving levels while you're at work or asleep (assumes you wake at 6 am, leave at 8 am, return at 6 pm and go to bed at 10 pm) ..................................To change, see pages 10-13 ONE-TOUCH TEMP CONTROL: You can override the program schedule at any time, and manually adjust the temperature (see pages 12-14). 3 Operating Manual Quick reference to controls Press day(s) to set program schedule (see page 11) Press to adjust temperature settings (see pages 11-14) Press to select fan operation (see page 7) Press to select system type (see page 8) MON FAN AUTO TUE WED THU FRI SAT SUN OK TO PICK MULTIPLE DAYS Inside 70 AM HOLD CLOCK Set To 70 Press for more options (select models only) SYSTEM HEAT Following Schedule Press to set program schedule (see page 11) 6:01 SCHED SCREEN MORE Press to override program schedule (see pages 12-14) Press to set clock (see page 6) Press to lock keypad for 30 seconds to clean screen (see page 16). 4 RTH8500 Quick reference to status display Current inside temperature Current day of week Temperature setting WED FAN Inside Fan setting AUTO 70 AM HOLD CLOCK Set To 70 SYSTEM Following Schedule Recovery Program schedule on (does not display when off) Smart Response® Technology in effect (see page 15) System setting HEAT 6:01 SCHED SCREEN MORE Current time Other display messages: · · · Cool On: Cooling system is activated Heat On: Heating system is activated Aux Heat On: Auxiliary heating system is activated (heat pump systems only) 5 Operating Manual Clock setting Press CLOCK 6:01 SCHED AM HOLD CLOCK SCREEN MORE To set the current time display, press clock, then press or to adjust the time. Press and hold or to advance the time more quickly. Press CANCEL DONE to save & exit (or press to exit without changing the time). Adjust time, then press DONE 6:02 DONE AM CANCEL Note: The real-time clock should never require adjustment since it automatically updates for daylight savings time, and stores all date/time information. Note: To change the current week day display, see System Setup in your Installation Guide. 6 RTH8500 Fan setting Press WED FAN AUTO FAN to select fan operation: · Inside On: Fan is always on. Auto: Fan runs only when the heating or cooling system is on. 70 AM HOLD CLOCK Set To 70 · SYSTEM HEAT Following Schedule 6:01 SCHED SCREEN MORE Press FAN 7 Operating Manual System setting Press the WED FAN AUTO SYSTEM button to select: · Inside 70 AM HOLD CLOCK Set To 70 · · SYSTEM HEAT Following Schedule 6:01 SCHED SCREEN MORE · · Note: The Auto and Em Heat system settings may not appear, depending on how your thermostat was installed. Heat: Thermostat controls only the heating system. Cool: Thermostat controls only the cooling system. Auto: Thermostat automatically selects heating or cooling depending on the indoor temperature. Off: Heating and cooling systems are off. Em Heat (only for heat pumps with auxiliary heat): Thermostat controls Emergency and Auxiliary Heat. Compressor is locked out. 8 RTH8500 Save money by setting program schedules It's easy to program your system for maximum energy savings. You can program four time periods each day, with different settings for weekdays and weekends. WAKE 6:00 am 70 ° LEAVE 8:00 am Set to the time you awaken and the temperature you want during the morning, until you leave for the day. Set to the time you leave home and the temperature you want while you are away (usually an energy-saving ° level). RETURN Set to the time you return home and the temperature 6:00 pm you want during the evening, until bedtime. 62 70 ° SLEEP 10:00 pm 62 ° Set to the time you go to bed and the temperature you want overnight (usually an energy-saving level). 9 Operating Manual EnergyStar® settings for maximum cost savings This thermostat is pre-set to use EnergyStar® program settings. We recommend these settings, since they can reduce your heating/cooling expenses by as much as 33%. (See next page to adjust times and temperatures of each time period.) Heat (Mon-Fri) Wake (6:00 am) Cool (Mon-Fri) Heat (Sat-Sun) Cool (Sat-Sun)