Honeywell RTH8500D Owner's Manual
Honeywell RTH8500D - 7-Day Touchscreen Universal Programmable Thermostat Manual
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- Honeywell RTH8500D | Owner's Manual - Page 1
RTH8500D Touch Screen Programmable Thermostat OWNER'S GUIDE The RTH8500D Thermostat provides electronic control of 24 Vac heating and cooling systems or 750 mV heating systems. For assistance with your Honeywell product, please visit www.honeywell.com/yourhome or call Honeywell Customer Care toll - Honeywell RTH8500D | Owner's Manual - Page 2
Important Instructions 5 Remove Old Thermostat 6 Follow Special Instructions 7 Label Old Thermostat Wires 10 Mount New Wallplate to Wall 11 Connect Wires to New Wallplate 15 Install Batteries 22 Attach New Thermostat to Wallplate 23 Set the Calendar 24 Configure Installer Setup 26 Get - Honeywell RTH8500D | Owner's Manual - Page 3
Step 1. Prepare for Installation 1. Check that the following items are included: Inside Set OWNER'S GUIDE Inside Set To Read and save these instructions WALLPLATE THERMOSTAT MOUNTING SCREWS (2) AND WALL ANCHORS (2) OWNER'S GUIDE WIRE LABELS CAUTION CARD CAUTION TURN OFF POWER to system at - Honeywell RTH8500D | Owner's Manual - Page 4
(Cont) 2. Check that you have everything required for the installation: • Three AAA alkaline batteries • No. 2 Phillips screwdriver and standard pocket screwdriver • Drill • Drill bit - use 3/16 in. for drywall; use 7/32 in. for plaster • Level ( - Honeywell RTH8500D | Owner's Manual - Page 5
and/or cooling system. These Installation Instructions explain later how to use the enclosed wire labels to correctly mark the wires connected to your old thermostat. OLD THERMOSTAT YELLOW WHITE Y W RED G GREEN RC R ORANGE ! DO NOT WIRE NEW THERMOSTAT BASED ON WIRE COLOR. M22034 5 69-1725 - Honeywell RTH8500D | Owner's Manual - Page 6
thermostat. 3. Remove the old thermostat from the wall or wallplate. Do not remove the wires. Y G C OLD THERMOSTAT WALLPLATE W THERMOSTAT thermostat that contains mercury in a sealed tube, do not place your old thermostat in the trash. Contact your local waste management authority for instructions - Honeywell RTH8500D | Owner's Manual - Page 7
Follow Special Instructions 1. If you have two C and/or C1 wires connected to your old thermostat, do not connect them to your new thermostat. 2. Disconnect the C and/or C1 wires. Make sure they do not touch each other or any other wires. 3. Wrap the bare end of each C and/or C1 wire with electrical - Honeywell RTH8500D | Owner's Manual - Page 8
Step 4. Follow Special Instructions (Cont) 4. If you have only one C and/or C1 wire connected to your old thermostat, connect this wire to C on the new thermostat. Visit www.honeywell.com/yourhome or call Honeywell Customer Care at 1-800-468-1502 before returning the thermostat to the store. OLD - Honeywell RTH8500D | Owner's Manual - Page 9
Special Instructions (Cont) 5. If you find any wires not connected to your old thermostat, do not connect them to your new thermostat. 6. Wrap the end of the wires that are not connected with electrical tape. OLD THERMOSTAT Y G RC W R LETTER DESIGNATION SCREW TERMINAL WIRE WIRE HOLE WIRES - Honeywell RTH8500D | Owner's Manual - Page 10
remaining part of the old thermostat from the wall. OLD THERMOSTAT W Y RC G Y G RC W R R WIRE LABEL LETTER DESIGNATION SCREW TERMINAL WIRE WIRE HOLE M22039 When connecting the wires to the new thermostat, refer to the wire labels. Do not connect wires to your new thermostat based on the color - Honeywell RTH8500D | Owner's Manual - Page 11
Step 6. Mount New Wallplate to Wall 1. Separate the wallplate from the thermostat as shown. WALLPLATE WIRE HOLE THERMOSTAT M22202 11 69-1725-1 - Honeywell RTH8500D | Owner's Manual - Page 12
Step 6. Mount New Wallplate to Wall (Cont) 2. Pass the labeled wires through the wire hole on the wallplate. WALL OPENING WIRE HOLE WALLPLATE LABELED WIRES M22203 69-1725-1 12 - Honeywell RTH8500D | Owner's Manual - Page 13
Step 6. Mount New Wallplate to Wall (Cont) 3. Position the wallplate on the wall with the arrow pointing up. Level the wallplate (for appearance only) and mark the two mounting holes with a pencil. LEVEL PLACE LEVEL ON SUPPORT TABS MARK MOUNTING HOLES (2) WALLPLATE M22204 13 69-1725-1 - Honeywell RTH8500D | Owner's Manual - Page 14
Step 6. Mount New Wallplate to Wall (Cont) 4. Move the wallplate aside and drill holes at the locations marked on the wall. Drill 3/16 in. holes for drywall or 7/32 in. holes for plaster. 5. Tap the wall anchors into the drilled holes until even with the wall surface. DRILLED HOLES (2) WALL - Honeywell RTH8500D | Owner's Manual - Page 15
designations. If you have a heat pump system, use the HEAT PUMP letter designations to wire the new thermostat. WALLPLATE METAL JUMPER WIRE TERMINAL BLOCK SCREW TERMINALS LETTER DESIGNATIONS RC R W Y G C M22206 3. If wires are to be connected to both Rc and R, loosen the Rc and R screw terminals - Honeywell RTH8500D | Owner's Manual - Page 16
designations. Tighten the screw terminals. 6. If any of the labeled wires do not match the letter designations, see next page for wire connections. WALLPLATE WIRE HOLE INSERT WIRE IN HOLE YW RC R G LABELED WIRES TERMINAL BLOCK SCREW TERMINALS LETTER DESIGNATIONS RC R W Y G C (NOT USED) M22207 - Honeywell RTH8500D | Owner's Manual - Page 17
to New Wallplate (Cont) 7. Compare letter designations on your old and new thermostats. Use the information below if you are wiring a CONVENTIONAL System. Use the information on page 20 if you are wiring a Heat Pump System. CONVENTIONAL Possible letter letter designations designations on on the - Honeywell RTH8500D | Owner's Manual - Page 18
place if only one of the terminals, RC or R, will be connected on the new thermostat. 2 If wires were connected to both R and RH terminals on the old thermostat, remove metal jumper wire between RC and R on the new thermostat. Connect the old R to the new RC and the old RH to the new R. 3 If - Honeywell RTH8500D | Owner's Manual - Page 19
(Cont) 8. Compare letter designations on your old and new thermostats. Use the information below if you are wiring a HEAT PUMP System. Possible letter designations on the labeled wires HEAT PUMP letter designations on the new thermostat 1 2 VR or V or R 3 H or B, O Y1 or M or Y F or G 3 X or - Honeywell RTH8500D | Owner's Manual - Page 20
and cooling contractor for assistance. 3 If the old thermostat had wires on both O and B, be sure to attach the B wire to the C letter designation on the new thermostat. If another wire is already matched to the C, contact Honeywell. 4 If the old thermostat had wires on W1, Y1 and W2, some system - Honeywell RTH8500D | Owner's Manual - Page 21
Step 7. Connect Wires to New Wallplate (Cont) 9. Push excess wire back into the wall opening. Keep wires in the shaded area. WIRE WALLPLATE WALL OPENING SHADED AREA M22211 21 69-1725-1 - Honeywell RTH8500D | Owner's Manual - Page 22
on the back of the thermostat as marked on the thermostat. BACK OF THERMOSTAT ++ + BATTERIES (3) M22212 2. Remove the tab labeled "Remove during installation" in the lower right corner of the thermostat back. REMOVE TAB REMOVE DURING INSTALLATION REMOVE DURING INSTALLATION 69-1725-1 M19920 22 - Honeywell RTH8500D | Owner's Manual - Page 23
SCREW BLOCK PINS ON BACK OF THERMOSTAT M22213 2. Push the thermostat straight onto the wallplate until it snaps into place. 3. Turn on the power at the heating and/or cooling system or fuse/ circuit breaker panel. If the wires interfere with mounting the thermostat to the wallplate, push the - Honeywell RTH8500D | Owner's Manual - Page 24
ready to set the calendar. 1. Use the arrow keys to set the year, month and day. 2. Press the Done key. SET CURRENT DATE SET MONTH MON TUE WED THU FRI DONE USE ARROWS TO SET YEAR M22226 The calendar can be set any time. See Step 11, Configure Installer Setup, for instructions. 69-1725-1 24 - Honeywell RTH8500D | Owner's Manual - Page 25
Step 10. Set the Calendar (Cont) 3. Use the arrow keys to set the current time. 4. Press the Done key. USE ARROWS TO SET TIME MON WED THU FRI SAT DONE M22227 25 69-1725-1 - Honeywell RTH8500D | Owner's Manual - Page 26
Installer Setup Menu to match your new thermostat to your heating and/or cooling system. Follow the steps in this section to set up your thermostat. 2. Press and release the System key. FAN ON Inside AUTO THU Set To SYSTEM EM HEAT OFF COOL Following Schedule AM SCHED HOLD CLOCK SCREEN M22225 - Honeywell RTH8500D | Owner's Manual - Page 27
Setup (Cont) 3. Press and hold the center blank key for approximately five seconds, until the screen changes. TUE CHANGE FILTER UV LAMP HUMIDIFIER PAD Inside Set To SYSTEM EM HEAT OFF COOL Following Schedule PM DONE CANCEL M19969 4. Release the center key when the display on your thermostat - Honeywell RTH8500D | Owner's Manual - Page 28
and 0150 to complete setting the calendar. ADVANCE TO NEXT INSTALLER SETUP INSTALLER SETUP NUMBER DONE PRESS TO EXIT INSTALLER SETUP FACTORY SETTING CHANGE THE FACTORY SETTING Installer Setup Number 0120 0130 0140 0150 Installer Setup Name Date (Year Upper) (Select Your Setting) Settings Select - Honeywell RTH8500D | Owner's Manual - Page 29
compressor runs in both heating and cooling. 3 - Heat Only with no fan (Conventional) -- Gas, oil or electric heating without central air conditioning. No wire on the G terminal on new thermostat. 4 - Heat Only with fan (Conventional) -- Gas, oil or electric heating without central air conditioning - Honeywell RTH8500D | Owner's Manual - Page 30
DONE PRESS TO EXIT INSTALLER SETUP UP ARROW DOWN ARROW Installer Setup Number 0180 Installer Setup Name (Select Your Setting) Settings Fan Control in Heating 0 - Gas or Oil Heat -- Heating system controls fan in a call for heat. 1 - Electric Heat -- Thermostat controls fan in a call for heat - Honeywell RTH8500D | Owner's Manual - Page 31
UP ARROW SETTING INSTALLER SETUP NUMBER DONE PRESS TO EXIT INSTALLER SETUP UP ARROW DOWN ARROW Installer Setup Number 0190 Installer Setup Name (Select Your Setting) Settings Heat Pump 0 - Changeover Valve in Cooling -- Changeover Use this setting if you connected a Valve wire labeled O to - Honeywell RTH8500D | Owner's Manual - Page 32
your setting, press the Up arrow key to go to the next Installer Setup Number. UP ARROW SETTING INSTALLER SETUP NUMBER DONE PRESS TO EXIT INSTALLER SETUP UP ARROW DOWN ARROW Installer Setup Number 0240 Installer Setup Name Heating Cycle Rate (Select Your Setting) Settings 5 - Gas or Oil - Honeywell RTH8500D | Owner's Manual - Page 33
the next Installer Setup Number. UP ARROW SETTING INSTALLER SETUP NUMBER DONE PRESS TO EXIT INSTALLER SETUP UP ARROW DOWN ARROW Installer Setup Number Installer Setup Name (Select Your Setting) Settings 0320 Temperature 0 - Fahrenheit Temperature Display. Indication 1 - Celsius Temperature - Honeywell RTH8500D | Owner's Manual - Page 34
NUMBER DONE PRESS TO EXIT INSTALLER SETUP UP ARROW DOWN ARROW Installer Setup Number 0330 Installer Setup Name Daylight Savings (Select Your Setting) Settings 0 - Daylight Savings is Off -- clock will not adjust for Daylight Savings Time. 1 - Daylight Savings is On -- clock will automatically - Honeywell RTH8500D | Owner's Manual - Page 35
INSTALLER SETUP NUMBER DONE PRESS TO EXIT INSTALLER SETUP UP ARROW DOWN ARROW Installer Setup Number 0500 Installer Setup Name Furnace Filter Change Reminder (Select Your Setting) Settings 0 - Furnace Filter change reminder is Off 1 - Approximately 1 month -- based on 10 days of fan run time - Honeywell RTH8500D | Owner's Manual - Page 36
Setup Number. UP ARROW SETTING INSTALLER SETUP NUMBER DONE PRESS TO EXIT INSTALLER SETUP UP ARROW DOWN ARROW Installer Setup Number 0530 Installer Setup Name Adaptive Intelligent RecoveryTM (Select Your Setting) Settings 0 - Conventional recovery -- system starts recovery at programmed time - Honeywell RTH8500D | Owner's Manual - Page 37
key to exit the Installer Setup and save your settings. 29. Congratulations! The installation of the thermostat is complete. UP ARROW SETTING INSTALLER SETUP NUMBER DONE PRESS TO EXIT INSTALLER SETUP UP ARROW DOWN ARROW Installer Setup Number 0640 Installer Setup Name Clock Format (Select - Honeywell RTH8500D | Owner's Manual - Page 38
Set To Following Schedule SCHED HOLD CLOCK SCREEN MORE SCHED CLOCK ENTERS SETS THE SCHEDULING TIME MODE FORWARD HOLD OR BACK SETS A PERMANENT HOLD AND ACTIVITIES VACATION HOLD MORE SHOWS FURNACE FILTER CHANGE REMINDER SCREEN LOCKS OUT THE SCREEN TO ALLOW FOR CLEANING M22238 69-1725 - Honeywell RTH8500D | Owner's Manual - Page 39
Set To SYSTEM HEAT Following Schedule AM SCHED HOLD CLOCK SCREEN MORE SYSTEM SHOWS CURRENT SYSTEM POSITION TIME DISPLAY CURRENT TIME OF DAY, HOLD TIME REMAINING OR NUMBER OF VACATION DAYS REMAINING FOLLOWING SCHEDULE SHOWS THE THERMOSTAT IS FOLLOWING THE PROGRAMMED SCHEDULE M22239 39 69-1725 - Honeywell RTH8500D | Owner's Manual - Page 40
Auxiliary Heat)- Thermostat controls emergency heat and auxiliary heat, if needed. Heat Pump compressor is not operational. CAUTION Equipment Damage Hazard. Air conditioning compressor damage possible. Do not operate cooling system when outdoor temperature is below 50 °F (10 °C). FAN AUTO Inside - Honeywell RTH8500D | Owner's Manual - Page 41
for most homes. The fan runs only when the heating or cooling system is on. On-The fan runs continuously. Use this setting for improved air circulation or for more efficient air cleaning. FAN AUTO Inside SYSTEM HEAT THU Set To Following Schedule AM SCHED HOLD CLOCK SCREEN M22262 41 69-1725 - Honeywell RTH8500D | Owner's Manual - Page 42
Heating and Cooling Schedule Your thermostat can control up to four different schedule periods per day: Wake-Period when you awaken an energy-saving temperature. Edit Schedule 1. Press Sched key. FAN AUTO Inside SYSTEM HEAT FRI Set To Following Schedule AM PM SCHED HOLD CLOCK SCREEN M22445 69 - Honeywell RTH8500D | Owner's Manual - Page 43
(Cont) 2. Press Edit key. MON TUE WED THU FRI SAT FAN AUTO OK TO PICK MULTIPLE DAYS SCREEN LOCKED Inside Set To SUN HEAT SYSTEM EM HEAT HEAT OFF COOL AUTO CANCEL PERIOD AM PM Following Schedule COOL DONE SCHED EDIT HOLD WAKE CLOCK SCREEN LEAVE RETURN SLEEP CANCEL M22553 43 69-1725-1 - Honeywell RTH8500D | Owner's Manual - Page 44
ON AUTO CIRC OK TO PICK MULTIPLE DAYS CANCEL PERIOD SAT SUN HEAT AM COOL DONE WAKE LEAVE RETURN SLEEP CANCEL M22300 4. Press Wake key. Once pressed, Wake flashes to show it is selected. 5. Press Up and Down keys to modify time and heat and cool temperatures from this screen. 6. Press Leave - Honeywell RTH8500D | Owner's Manual - Page 45
Schedule (Cont) 9. When complete, press Done key. "Saving Changes" appears on the screen to indicate changes are being saved to the day(s) modified. MON TUE WED THU FRI SAVING CHANGES M19956 10. To set a Program Schedule for the remaining days of the week, repeat steps 1-9. Example: If Mon-Fri - Honeywell RTH8500D | Owner's Manual - Page 46
if someone is always home during the day on Tuesday, you can cancel the Leave and Return periods (the thermostat would then control to the Wake temperature until the was cancelled. MON TUE WED THU FRI OK TO PICK MULTIPLE DAYS FAN SAT SUN HEAT COOL DONE 6. Press Done key. WAKE LEAVE RETURN - Honeywell RTH8500D | Owner's Manual - Page 47
Set Time Set Time 1. Press Clock. 2. Use the arrows to set the current time. TUE AM DONE 3. Press the Done key. CANCEL M19958 The current day of the week should already be set correctly. If not, see Step 11, Configure Installer Setup. 47 69-1725-1 - Honeywell RTH8500D | Owner's Manual - Page 48
scheduled period. 2. Press the Up or Down arrow next to the Time key to set the desired time for the thermostat to resume the schedule. TUE FAN AUTO Inside Set To SYSTEM HEAT Hold Temperature Until PM SCHED HOLD CLOCK SCREEN CANCEL M19959 3. Press the Cancel or Sched key to cancel "Hold - Honeywell RTH8500D | Owner's Manual - Page 49
(Cont) Permanent Hold Permanent Hold changes the temperature setting until Permanent Hold is cancelled. 1. Press the Hold key. "Permanent Hold" appears on the screen. 2. Press the Up or Down arrow next to the temperature you want to set during "Hold." TUE FAN Inside AUTO Set To SYSTEM HEAT - Honeywell RTH8500D | Owner's Manual - Page 50
Hold override expires after the number of days you selected ends.) 2. Press the Hold key twice. Screen shows "Hold Temperature Until" 1 day. 3. Press the Up and Down arrow keys to change the number of Days you desire the thermostat to override the schedule. FAN Inside AUTO THU Set To SYSTEM HEAT - Honeywell RTH8500D | Owner's Manual - Page 51
Clean Your Thermostat Screen 1. Press the Screen key. The thermostat locks out all touch keys for 30 seconds to allow for cleaning. OK TO CLEAN SCREEN M19964 2. Use a damp cloth slightly moistened with water or household glass cleaner to clean the screen. 3. Repeat the above steps, as necessary. 4. - Honeywell RTH8500D | Owner's Manual - Page 52
screen. 2. Press the Edit key to change the Timer reload value. Use the Up or Down arrow keys to change the number of run Time Days. See Configure Installer Setup Number 0500, for approximate calendar days. 3. Press the Done key to go back to viewing the filter timer. 4. Press the Reset key to reset - Honeywell RTH8500D | Owner's Manual - Page 53
Schedule Recovery PM SCHED HOLD CLOCK SCREEN MORE M22301 It takes about a week for the thermostat to adjust to local weather, your schedule, the construction of your home and your heating and/or cooling system. Each day it adjusts the next day's recovery start time accordingly. 53 69-1725-1 - Honeywell RTH8500D | Owner's Manual - Page 54
Replace Batteries 1. When the LO Battery indicator is flashing, replace the batteries promptly with three fresh AAA alkaline batteries M19963 2. Remove thermostat from the wallplate by pulling straight out. WALL 69-1725-1 M22243 54 - Honeywell RTH8500D | Owner's Manual - Page 55
Replace Batteries (Cont) 3. Remove the old batteries and insert three fresh AAA alkaline batteries, as marked on the thermostat. BACK OF THERMOSTAT BATTERIES (3) ++ + M22212 55 69-1725-1 - Honeywell RTH8500D | Owner's Manual - Page 56
Replace Batteries (Cont) 4. Align the screw blocks with the pins on the back of the thermostat. WALLPLATE TERMINAL SCREW BLOCK PINS ON BACK OF THERMOSTAT M22213 5. Push the thermostat straight onto the wallplate until it snaps into place. 69-1725-1 56 - Honeywell RTH8500D | Owner's Manual - Page 57
Review Battery Tips 1. Replace the batteries as soon as LO Batt flashes in not last as long and can leak, causing thermostat damage. 3. Although the thermostat has a Low Battery indicator, replace the batteries once a year to prevent the thermostat and heating/ cooling system from shutting down due - Honeywell RTH8500D | Owner's Manual - Page 58
Built-in Compressor Protection The RTH8500D Thermostat has built-in compressor protection (minimum minimum-off timer, the thermostat shows "Wait" in the display. WED FAN AUTO Inside SYSTEM HEAT AM COOL PM Set To WaitCool Following Schedule SCHED HOLD CLOCK SCREEN MORE M22244 When the - Honeywell RTH8500D | Owner's Manual - Page 59
Screen key is blank. set the Furnace Filter Change Reminder. See Installer Setup Number 0500 in Step 11. Display is blank. Check that fresh AAA alkaline batteries are installed as marked on the thermostat • Wait five minutes for the heating system to respond. • If all of this was checked, contact - Honeywell RTH8500D | Owner's Manual - Page 60
not turn on" in the Troubleshooting Tips. "Wait" shows in the display. Compressor minimum-off timer is active. Wait up to five minutes for the cooling or heating system to turn on. Fan does not turn on Check Installer Setup Number 0180, Fan in a call for heat Control in Heating, and make sure - Honeywell RTH8500D | Owner's Manual - Page 61
cooling system. the room temperature ("Heat On" is not shown in display). Red LED is on in the A system monitor is wired to the thermostat L upper right corner and terminal. See Heating or Cooling system does the Heat Pump is not not turn on in the Troubleshooting Tips. working. 61 69-1725-1 - Honeywell RTH8500D | Owner's Manual - Page 62
Customer Assistance For assistance with your Honeywell product, please visit www.honeywell.com/yourhome or call Honeywell Customer Care toll free at 1-800-468-1502. 69-1725-1 62 - Honeywell RTH8500D | Owner's Manual - Page 63
Honeywell shall repair or replace it (at Honeywell's option) within a reasonable period of time. If the product is defective, (i) return it, with a bill of sale or other dated may not apply to you. This warranty gives you specific legal rights, and you may have other rights which vary from - Honeywell RTH8500D | Owner's Manual - Page 64
Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 69-1725-1 G.H. Rev. 10-04 www.honeywell.com/yourhome
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OWNER°S GUIDE
U.S. Pat. 6,595,430
Other Patents Pending
fi U.S. Registered Trademark
' 2004 Honeywell International Inc.
All Rights Reserved
69-1725-1
RTH8500D Touch Screen
Programmable Thermostat
The RTH8500D Thermostat provides electronic control of 24 Vac heating and
cooling systems or 750 mV heating systems.
For assistance with your Honeywell product, please visit
www.honeywell.com/yourhome
or call Honeywell Customer Care
toll free at 1-800-468-1502.
Read and Save these Instructions