Honeywell Wi-Fi Smart Thermostat Installation Guide

wifi thermostat without c wire
Honeywell RTH9580WF Wi-Fi Thermostat

Have you purchased a Honeywell Wi-Fi Smart thermostat, but do not know how to install it? The installation process is fairly straightforward. Though, if you have never installed a home appliance, you may want to make sure that you know what you are doing. Use the following guide to properly install your Honeywell Wi-Fi smart thermostat.

Basic Smart Thermostat Installation

There are three basic steps. If you have experience with wiring and HVAC systems, then you will probably not need any further instructions than the following summary:

• Remove your old thermostat and label wires
• Install and wire your new thermostat
• Set your new thermostat to match your existing heating/cooling system

Make sure that you have all of the equipment and items ready before installation. This includes your new thermostat, the quick reference card, the wall anchors and mounting screws, and the documentation that came with your thermostat.

You will also need the following tools and supplies:

• No. 2 Philips screwdriver
• Small pocket screwdriver
• Drill
• Drill bit
• Hammer
• Pencil
• Electrical tape
• Two AA batteries

Remove Your Old Thermostat and Label Wires

Turn off the power to your heating/cooling system before starting the installation process.

Remove your old thermostat, but do not remove the wall plate with the wires attached to it. The wall plate should contain a series of wires connected to screws that are labeled.

Wrap a piece of electrical tape around the bare metal ends of any wires that are not attached to your thermostat. Also, disconnect any wires from your wall plate that are connected to screws labeled “C” or “C1”. Again, wrap the ends of these wires in electrical tape.

Begin disconnecting the remaining wires, one at a time. As you remove the wire, attach a label indicating the screw that it was attached to. You can now remove the wall plate.

Install and Wire Your New Thermostat

Honeywell RTH6580WF Wi-Fi 7-Day Programmable Thermostat (honeywell wi-fi smart thermostat installation)
Honeywell RTH6580WF Wi-Fi 7-Day Programmable Thermostat

The next step is to install and wire your new thermostat. Remove the wall plate from the new thermostat. Insert the quick reference card into the back of the thermostat.

Pull the labeled wires through the new wall plate. If you want to ensure that your new wall plate is straight, use a level. Mark the screw hole positions on your wall using a pencil.

Drill holes in the wall where you left pencil marks to indicate the screw positions. Tap the anchors into the holes using a hammer. Place the wall plate back on the wall and insert the screws.

Connect the wires to the new thermostat. This step is easy. Simply match the labeled wires to the labeled screws on the screw terminal. You should use a screwdriver to loosen the screw terminals. Insert one wire at a time and then tighten the screw.

Push the excess wire back into the wall. If you are using both “R” and “Rc” wires, then you should remove the metal jumper that is placed over those screw terminals.

Place two AA batteries in your new thermostat. The Honeywell Wi-Fi smart thermostat does not require a c-wire to provide continuous power. Instead, it is simply powered by two AA batteries.

Attach the thermostat to the wall plate. It should easily snap into place. You can now turn your heating/cooling system back on and proceed to the final step.

Set your New Thermostat

The final step is to match your thermostat to your heating/cooling system. Press and hold the “Up” arrow and the “FAN” button until the display changes and you enter the settings menu. You should see a function number of on the left and a setting number on the right.

The function number should read “1”. Press the up or down arrow to select the type of heating/cooling system you have in place. The setting number should read as follows:

0 – Heating and cooling, such as gas, oil, or electric heating with central air conditioning
1 – Heat pump. An outside compressor provides both heating and cooling
2 – Heating only. Gas, oil, or electric heating without central air conditioning
3 – Heating only with fan. Gas, oil, or electric heating without central air conditioning. You can use this option if your old thermostat had a fan switch.

After choosing the correct system, press the “Next” button to proceed to the next function. The function number should now read “2”. The setting number should read “0” if you have a cooling changeover valve – if you connected a wire labeled “O”. If you connected a wire labeled “B”, then you should press the up arrow to select setting “1”.

Press the next button to move to the 3rd function. This is for the heating fan control. If you use gas or oil heat, set this function to “0”. If you use electric heat, then set this to “1”.

Press the next button to set function “5”. This is for the heating cycle rate. Set the setting number to the following value:

• 5 – Gas or oil furnace
• 9 – Electric furnace
• 3 – Hot water or high-efficiency furnace
• 1 – Gas/oil steam or gravity system

The final function sets the temperature display. Press the next button until you reach function “14”. Set the setting number to “0” if you want the temperature displayed in Fahrenheit and “1” if you want Celsius.

Final Thoughts on Installing a Honeywell Smart Thermostat

If you have any trouble installing your thermostat, you should contact Honeywell customer support. They will be able to provide you with advice and recommendations for properly installing your thermostat. They can even walk you through the steps if you are having trouble with the installation.

Smart thermostats are wonderful, modern devices. They help you control your temperature via your smartphone or tablet. You gain the ability to monitor and control the temperature and humidity inside your home from anywhere.

You can adjust the temperature before heading home from work or check the temperature while you are away on vacation.

If you want to save energy, reduce your energy bill, and control your temperature from any location, then purchase a Honeywell Wi-Fi smart thermostat and use these steps to get it installed.


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