RTH8500 Series Programmable Thermostat Following Schedule Quick Installation Guide PM Mode Fan Heat Read and save these instructions. Wake Auto Away Home Sleep Mode For help please visit honeywellhome.com Menu Fan M37764 Find rebates: HoneywellHome.
Quick Installation Guide Removing your old thermostat 1 Turn power OFF. To protect yourself and your equipment, Turn off the power at the breaker box or switch that controls your heating/cooling system. ON OFF OFF Switch Breaker box 2 Check that your system is off. Change the temperature on your old thermostat. If you don’t hear the system turn on within 5 minutes, the power is off.
RTH8500 Series 5 Take a picture of how your wiring looks right now. Be sure to include the letters next to the terminals where the wires are inserted. This will be a helpful reference when wiring your thermostat. Tip: If the color of your wires has faded or if 2 terminals have the same wire color, use the wire labels provided in the package to label each wire. 6 Record if you have wires in the following terminals. Do not include jumpers as a part of your count. The thermostat does not need jumpers.
Quick Installation Guide 8 Disconnect the wires and remove the old wall plate. Use a screwdriver to release wires from terminals. Then, use a wire label to identify each wire as it’s disconnected. The letter on the wire label should match the letter on the terminal. Tip: To prevent wires from falling back into the wall, wrap the wires around a pencil. Wiring Labels Apply these wiring labels to each wire with the appropriate terminal designation as you remove it from the existing thermostat.
RTH8500 Series 10 Insert the wall anchors. It is recommended that you use the wall anchors included in the box to mount your thermostat. You can use the UWP to mark where you want to place the wall anchors. a) Level the wall plate. b) Mark the location of the wall anchors using a pencil. c) Drill the holes. d) Insert wall anchors. e) Make sure anchors are flush with wall. Tip: If your box contains red anchors, drill 7/32” holes. If your box contains yellow anchors, drill 3/16” holes.
Quick Installation Guide 12 Connect wires from Step 7. Depress the tabs to put the wires into the inner holes of their corresponding terminals on the UWP (one wire per terminal) until it is firmly in place. Gently tug on the wires to verify they are secure. Tip: If you need to release the wires again, push down the terminal tabs on the sides of the UWP. This wiring is just an example, yours may vary. 13 Mount the UWP and close the door. Mount the UWP using the provided 8” to 3/ 1/4” screws.
RTH8500 Series 17 Turn your power ON. Turn on the power at the breaker box or switch that controls the heating/ cooling system. ON ON OFF Switch Breaker box 18 Return to the thermostat ON Return to the thermostat. Confirm the screen shows START SETUP. If your thermostat does not show START SETUP, please contact Honeywell Home support. OFF 19 Start setup. Touch START SETUP to begin 20 Navigate and edit setup options. Use the or to navigate through all the setup options.
Quick Installation Guide Key features Desired temperature Displays desired indoor temperature. System status information Indoor Temperature Cool On, Heat On Emergency Heat On, Recovery, or Auto Changeover On. NOTE: Heat On/ Cool On may flash for 5 minutes for compressor delay. Displays current indoor temperature. Heat On Following Schedule AM Recovery Mode Fan Adjust temperature Touch + or - to set your desired indoor temperature. Auto Chg.
RTH8500 Series System Setup options To access all system options in the table below, press and hold MENU for 5 seconds. Touch or to scroll through the list. Number Description Options (factory default in bold) 120 Scheduling Options 0 = Non-Programmable 1 = 1-Week Programmable 2 = 5-2 Programmable 3 = 5-1-1 Programmable 4 = 7-Day Programmable Note: You can change default MO-FR, SA-SU schedule here.
Quick Installation Guide Number Description Options (factory default in bold) 365 Cool 1 CPH (Cooling cycle rate stage 1) 1 - 6 CPH (3 CPH) Note: This ISU is only displayed when Cool /Compressor Stages is set to 1 or more stages. Cycle rate limits the maximum number of times the system can cycle in a 1 hour period measured at a 50% load. For example, when set to 3 CPH, at a 50% load, the most the system will cycle is 3 times per hour (10 minutes on, 10 minutes off).
RTH8500 Series System operation settings 1 Press the Mode button to cycle to the next available System mode. 2 Cycle through the modes until the required System mode is displayed and leave it to activate. AM Following Schedule Mode Fan Away NOTE: Available System modes vary by model and system settings. AM Following Schedule System modes: ‒‒ Auto: Thermostat selects heating or cooling as needed. ‒‒ Heat: Thermostat controls only the heating system.
Quick Installation Guide Program Schedule You can program four time periods each day, with different settings for weekdays and weekends. We recommend the pre-set settings (shown in the table below), since they can reduce your heating/cooling expenses. Wake - Set to the time you wake up and the temperature you want during the morning, until you leave for the day. Away - Set to the time you leave home and the temperature you want while you are away (usually an energy-saving level).
RTH8500 Series 6 Edit the next period or use the until you see Done, then press Select to save changes and go to the home screen. NOTE: To temporarily cancel a schedule period (such as Saturday-Sunday Away, for example, because you’ll be home), go to the SCHEDULE option and touch the or arrows to select a period. Touch Select on the period you want to cancel, then touch Cancel Period. To reactive the period you cancelled, touch Cancel Period again to select period start time and preferred temperature.
Quick Installation Guide Program schedule override (permanent) 1 Touch or on the thermostat home screen to reach your desired temperature. Hold Until will appear together with the time you want the hold to end. Heat On AM Hold Until AM Mode Fan Heat 2 Touch Hold Until. Permanent Hold will Mode appear on screen. Touch Permanent Hold to hold this temperature until you manually change it.
RTH8500 Series Wiring—heat pump Connect wires: heat pump 1 2 Match each labeled wire with same letter on new thermostat. Insert the wires into the matching terminal. NOTE: If you have difficulty inserting wires, you may have to press down the terminal push button next to the corresponding terminal. Labels don’t match? If labels do not match the letters on the thermostat, see “Alternate wiring (for heat pumps only)” below.
Quick Installation Guide Smart Response® Technology This feature allows the thermostat to “learn” how long the furnace and air conditioner take to reach programmed temperature settings, so the temperature is reached at the time you set. For example: Set the Wake time to 6 am, and the temperature to 70°. The heat will come on before 6 am, so the temperature is 70° by the time you wake at 6. The message “Recovery” is displayed when the system is activated before a scheduled time period.
RTH8500 Series Setting the date 1 Touch Menu on the thermostat home screen. 2 Touch the or arrows until you see DATE, then touch Select. 3 Touch or to set the month, then touch Select to confirm. 4 Continue to set day and year in the same way. Touch Select to save your changes. Back Select Back Select Choosing Fahrenheit or Celsius To select a temperature scale, follow the steps below. 1 Touch Menu on the thermostat home screen.
Quick Installation Guide Troubleshooting If you have difficulty with your thermostat, please try the following suggestions. Most problems can be corrected quickly and easily. Display is blank Make sure fresh AA alkaline batteries are properly installed (see page 6). If powered by common (C-wire), verify circuit breaker and furnace switch are turned on. Verify furnace door is securely closed.
RTH8500 Series 1-year limited warranty Resideo warrants this product, excluding battery, to be free from defects in workmanship or materials, under normal use and service, for a period of one (1) year from the date of first purchase by the original purchaser. If at any time during the warranty period the product is determined to be defective due to workmanship or materials, Resideo shall repair or replace it (at Resideo’s option).
CAUTION: ELECTRICAL HAZARD Can cause electrical shock or equipment damage. Disconnect power before beginning installation. CAUTION: MERCURY NOTICE If this product is replacing a control that contains mercury in a sealed tube, do not place the old control in the trash. Contact your local waste management authority for instructions regarding recycling and proper disposal.
