Thermostat Installation Guide

Air & Water recommends that you use a trained professional when installing a new thermostat. Use trusted references or do research to find a local technician, electrician, or contractor. If you have the technical skills to install a programmable thermostat yourself, do so with caution. Read the included instructions, manuals, or installation guides before beginning. Programmable thermostats come with literature to ease the installation process, it's crucial to heed all the warnings from the manufacturer.

How to Install Your Thermostat

• Disconnect all power sources connected to your current thermostat.
• Remove thermostat cover.
• Locate the wires connecting the thermostat and heater. Write down the wire line terminal designations as a guideline for later.
• Disconnect the wiring attached to the heater.
• Remove and disassemble the old thermostat from the wall. Keep the wires organized and untangled.
• Drill holes in the wall for the new programmable thermostat.
• Connect the wires through the thermostat subbase. The subbase is the back panel of the thermostat, most programmable thermostats have an opening for wires integrated into the design.
• Attach the subbase to the wall, using screws or drywall anchor. The wires should already be through the hole on the subbase.
• Connect the wires to their proper terminals on the programmable thermostat, matching labels exactly.
• Attach the thermostat to the subbase on the wall.
• Follow manufacturer instructions to program the thermostat.

We've provided a list below of wire line terminals for reference. This is a compilation of common designations that you may encounter upon thermostat instillation. Please note that wire designations and colors vary by manufacturer and this list is not comprehensive.