Red light is on • If thermostat is in Emergency Heating system is running in cool mode • Press SYSTEM to set system to Heat. Make sure the temperature is set higher than the Inside temperature. • Press SYSTEM to set system to Cool. Make sure the temperature is set lower than the Inside temperature. • Check circuit breaker and reset if RTH8500 About your new thermostat System setup 1. Press SYSTEM. Inside Set To AUTO Following SYSTEM Schedule Outside HEAT 6:01 SCHED HOLD SCREEN MORE M28340 2. Press and hold blank center key until the Inside Set To screen changes (approximately 5 seconds). Installing your RTH8500 thermostat 9 Bundle and insert wires through the UWP. Pull open the UWP and insert the bundle of wires through the back of the UWP. Make sure at least 1/4-inchof each wire is exposed for easy insertion into the wire terminals. RTH8500 Thermostat Screws UWP Mounting System Anchors Wall Wiring Labels Manual RTH8500 Touchscreen Programmable Thermostat 69-1901ES-02. Read and save these instructions. System Setup in your Installation Guide. Press CLOCK Adjust time, then press DONE SCHED HOLD CLOCK SCREEN MORE WED AM FAN Operating Manual 69-1901ES—02 10 This thermostat is pre-set to use energy-saving program settings. We recommend these 1 Install your thermostat. 2 Connect it to your home wireless network. 3 Register online for remote access. Before you begin, you may want to watch a brief installation video. Use the QR Code ® at the front of this guide, or go to wifithermostat.com/support 7 Installing your thermostat You might need the following tools to install this thermostat: Honeywell RTH8500 Series Quick Installation Manual page 25 Wiring—heat pump Alternate wiring (for heat pumps only) Leave metal jumper in place, connecting R & Rc terminals. If your old thermostat had both V and VR wires, stop now and contact a qualified contractor for help. If your old thermostat had separate O and B Honeywell Thermostat RTH8500 Operating Manual Leave a reply The RTH8500D Thermostat provides electronic control of 24 Vac heating and cooling systems or 750 mV heating systems. Download Quick installation manual of Honeywell RTH8500 Series Thermostat for Free or View it Online on All-Guides.com. Honeywell's Total Connect Comfort is the perfect solution if you travel frequently, own a vacation home, a business or manage an Investment property or if you are simply looking for peace of mind. This thermostat works with common 24 volt systems such as forced air, hydronic, heat pump, oil, gas, and electric. Access the Installer Setup by pressing the System button and holding the center blank box at the bottom of the thermostat for 5-10 seconds until the screen changes (TH8320WF / RTH8580WF). On the TH8321WF, select the Menu > Installer Options, then enter the Date Code (located on the back of the thermostat or from the Menu >Equipment Status Honeywell Thermostat Installation and Wiring Heat pump thermostat wire color code Substitute G-Wire for C-Wire -- Install the Honeywell Thermostat RTH8500 Operating Manual Leave a reply The RTH8500D Thermostat provides electronic control of 24 Vac heating and cooling systems or 750 mV heating yourhome.honeywell.com RTH8500 Touchscreen Programmable Thermostat Installation is Easy. 1. Label wires and remove your old thermostat 2. Install and wire your new thermostat 3. Set your new thermostat to match yo