Posted 20 hours ago

Honeywell THM5421R1021 IAQ Equipment Interface Module

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Operating Temperature Rating -40 to 165 Deg F; Supply Voltage 18 to 30 VAC; Current Rating 1 Amp (Cool), 1 Amp (Heat), 0.

All this and much more is available to you absolutely free when you register; for an account, so join our community today today! With 31 Famous Supply locations in Ohio, western Pennsylvania, and West Virginia, your local Famous counter has everything you need to help you get your project done. Sorry, but I'm new to this forum and I couldn't figure out how to do a post other than to reply to this thread. We make it easy and affordable for professionals and homeowners alike to find discounted air conditioning parts and wholesale heating system supplies. These facts led me to worry that connecting both at the same time might be incorrect and damage my stat.Understanding the importance of quality and reliability, we supply an extensive selection of energy-efficient heating equipment for sale, as well as energy-efficient HVAC equipment designed to elevate the functionality and efficiency of existing systems. If my 24v goes dead then the furnace isn't going to run anyway even if my thermostat is still functional. The THM5421R1021 interface module streamlines the performance of the system helping clients reduce energy costs.

If you have any problems with the registration process or your account login, please contact support. Please let me know if you have other questions or concerns as I will be locking this in 24 hours if I won't hear back from you again.The Honeywell Prestige 2-Wire IAQ Equipment Interface Module is an essential part of the home HVAC system. At Cold Air Central, we pride ourselves on being a trusted authority in the world of HVAC supplies, equipment, and parts.

I want to replace my Honeywell thermostat that is only connected using 3 wires; Red, White and green to a nest thermostat. Thinking, I may have a defective unit, I exchanged it -- but now the replacement is doing the same thing. To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. I kept the red wire where it was, but switched the white wire from the W to C-terminal on the thermostat and to the "common" terminal in the boiler room (inside a TACO 406 ZVC). Their wide range of offerings include thermostats, zoning solutions, and air purifiers, helping to make living and working environments comfortable and efficient.Discover indoor and outdoor LED lighting options from undercabinet to ceiling and vanity, you can trust Bright33 for convenience, quality and value. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Ideal for any situation, this device is very lightweight, making it simple to install no matter the situation. From mini split systems to room air conditioners and dehumidifiers and registers, you can count on Breeze33 for convenience, quality and value.

The 103 third parties who use cookies on this service do so for their purposes of displaying and measuring personalized ads, generating audience insights, and developing and improving products. These radio-using devices require wired-power -- 24VAC -- to talk to sensors so I decided to reuse the existing two wires to supply that, with the signaling done wirelessly. When the thermostat tells me to "press Connect on the wireless device", I do press the sole button on the EIM, but nothing happens. There is also another small circular lithium battery in the stat which the manual says keeps the date and time intact.As long as I know other installers have conected both the batteries and the 24V at the same time without causing any damage, then for me this issue is laid to rest. Right now there are absolutly no wires connected between the stat and the furnace or the equipment interface module.

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