How do I wire a Honeywell ZWSTAT Thermostat?
First off, Alarm Grid always recommends using a licensed HVAC installer to help you install a Honeywell ZWSTAT Thermostat.
Now if you're a seasoned DIY and have wired thermostats in the past and are ready to tackle the ZWSTAT, you should first consult the Honeywell ZWStat Installation Manual.
Pages 4-5 have very detailed wiring instructions for 11 different common configurations including 4 conventional and 7 with heat pumps.
If you're not sure which wiring system you have? You're probably in over your head and should consult an HVAC installer!
Still going? Okay, if you check your air handler it should be pretty easy to determine if you have a conventional or heat pump.
Number of transformers? Do you have a high-end, newer efficient unit? Then you'll likely have two transformers if your'e unit has a high and low setting.
Next up, if you're unit was properly wired before, it will be as simple as matching color-to-color once you identify which configuration you have.
Unfortunately, if you're system was not wired properly before, you're going to be opening your air handler and likely going far beyond the level of this guide or anything a DIYer should be doing.
One last thing to note? The Honeywell ZWSTAT requires a 24VAC common wire. Many traditional thermostats do NOT require a common wire, so there's a decent chance your installer never ran one before.
Traditional thermostats can get the occasional power they need from the other wires. The ZWSTAT will require this common wire for its power and will not work without it. The wire will likely be black and not connected to anything else.
But again, we can't stress this enough. Call a your local HVAC specialist because you can very easily damage your transformer and cost yourself way more than that phone call would have been!
Good luck and please ask us any questions about wiring a ZWSTAT in the comments below. And then be sure and contact us when you're ready to sign up for Total Connect to begin taking advantage of your new ZWSTAT with remote control!
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- Answered By
- Eric Hochberger