Posted 20 hours ago

Honeywell THM5421R1021 IAQ Equipment Interface Module

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Highly compatible with the Honeywell Prestige IAQ System, the THM5421R1021 module saves you time and money. This statement makes me think that both the 24VAC and the batteries can be connected at the same time because of the backup reference, but I'm not sure. The zone consists of two rooms with different temperatures in them, so we wanted to replace it with a thermostat capable of taking a reading from a remote sensor. Equipment Interface Module controls up to 4-stages of heat and 2-stages of cool in a heat pump system and up to 3-stages of heat and 2-stages of cool in a conventional system. 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.

This dependable module uses advanced communication protocols that help improve control of the HVAC system. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. 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. Still it could well be that this lithium battery keeps the programming intact also and the alkaline batteries power the communications, I don't know. Instead of saying it could be powered by either batteries or 24V they should say batteries and/or 24V.

With our guidance on how to replace HVAC parts, even the most complex home air conditioning repair parts and DIY heating system repair projects become manageable. Then you'll be able to select which homeowners see your logo based on the pricing per household (consumer will not be charged). Gas, Oil, Electric, Heat Pump, Forced Warm Air, Hot Water, Steam Or Gravity Application, Up To 3 Heat 2 Cool Heat Pump Or Up To 2 Heat 2 Cool Conventional Stages, For Use With Wireless FocusPRO Thermostats. Right now there are absolutly no wires connected between the stat and the furnace or the equipment interface module. Cold Air Central is a HVAC and refrigeration supply company providing a wide range of supplies for HVAC installers, HVAC contractors, and HVAC company repair person and as well as local, state and federal government.

Honeywell's Equipment Interface Module (EIM) THM5421R1021 IAQ was supposed to help there -- hooked up to the TACO 406 ZVC in the boiler room instead of the thermostat, and talking to the thermostat via Honeywell's proprietary RedLink-protocol. Hardwired is best, I usually do both for no reason really other than the batteries come in the box so I put them in. From bathroom and kitchen products to pre-assembled installation kits and behind-the-wall products, you can count on Stream33 for convenience, quality and value. We make it easy and affordable for professionals and homeowners alike to find discounted air conditioning parts and wholesale heating system supplies.Our inventory includes everything from air conditioner fan motors, compressor parts for HVAC, HVAC filter replacements, to thermostat components for heating systems. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Honeywell is the backbone of the HVAC industry, helping to improve the lives of consumers by providing innovative, cutting-edge solutions. The thing I don't like is that the manual uses the OR word when it describes powering up the stat using the 24V wiring or the 6V (4 X 1.

Thinking, I may have a defective unit, I exchanged it -- but now the replacement is doing the same thing. I own a Honeywell VisionPRO thermostat (TH8320R1003) which is used to control my natural gas furnace through an Honeywell Equipment Interface Module (THM5421R1021). If you have any problems with the registration process or your account login, please contact support.When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Whether you're in need of HVAC troubleshooting parts for a system that's not cooling, seeking out seasonal HVAC maintenance kits for summer AC repair parts and winter heating system upgrades, or simply looking for the best parts for AC repair and HVAC upgrade kits online, Cold Air Central is your go-to source.

To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. The Equipment Interface Module controls up to 4-stages of heat and 2-stages of cool in a heat pump system and up to 3-stages of heat and 2-stages of cool in a conventional system. With 45,000+ SKUs, Famous Supply specializes in HVAC, plumbing, industrial, building products, and training.Once, when I pressed Connect on the EIM first, the thermostat would not go into "Add a Device" mode complaining of another wireless devices listening -- perhaps, the EIMs are meant to be connected differently from sensors for some reason? Ideal for any situation, this device is very lightweight, making it simple to install no matter the situation. My new thermostat booted and I was able to pair it with an in-house and an outside sensors with ease. 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.

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