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After installing a Nest Additional bearing thermostat in 2013, I am replacing it with a Honeywell Wi-Fi affiliated thermostat because it bigger controls the calefaction in my home. Search ydr.com for abounding story. Paul Kuehnel
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Graph generated by the smartphone by abstracts from the HOBO. Noting the baby variations as the heating arrangement heats and again the abode cools. The day with a ample access in temperature and clamminess was a balmy day I opened the windows.(Photo: Paul Kuehnel, York Daily Record)Buy Photo
Updated: I accustomed a baby temperature recording assemblage from Nest. The HOBO Bluetooth Low Energy Temperature/Relative Clamminess Abstracts Logger records temperature and clamminess at preset intervals and food the abstracts until you are accessible to dump it into a smartphone.
Nest asked me to run the temperature logger for a week, recording at 30 additional intervals, my heating cycles created by the Honeywell RTH6500. I emailed them a spreadsheet of the abstracts file. Nest already had the abstracts calm by the Nest Acquirements Thermostat when it was in service.
The HOBO unit allows you to set intervals, programming it with an Android or iOS app via Bluetooth.
I set it up and then disconnected the HOBO from my buzz until the anniversary of temperature recording had ended.
Reconnecting the assemblage to my phone, I dumped the abstracts into the app and a blueprint was created. I exported a advance area of the temperature abstracts and emailed it to a Nest engineer.
As I recorded with my own alien thermometer, the Honeywell RTH6500 captivated the abode temperature to aural a amount (see graph).
Greater variations on the blueprint are due to balmy canicule that were abutting to central temperature and cooking. It's absorbing to watch clamminess abatement with approved heating cycles.
Honeywell afresh contacted me afterwards account this commodity and is sending me either a Honeywell Lyric Annular or Lyric T5 Thermostat for testing.
Look for an amend afterwards I accept installed and acclimated that thermostat.
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January 20, 2017
About a anniversary afterwards this adventure was published, Nest accomplished out to me.
A Nest architect is sending me a accessory that will almanac a temperature timeline in my home application the Honeywell RTH6500.
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Nest already has a almanac of the heating cycles recorded by the Nest thermostat afore I removed it in aboriginal January on the aforementioned heating system.
Check aback and see what we learn.
Story from January 9, 2017
Back in 2013, I installed a new Nest, additional bearing learning thermostat and actual my acceptance over the aboriginal month.
The accessory was a curiosity of Internet connectivity and accessible to set up. It was rock solid over the accomplished four years, assuming firmware updates in the accomplishments and blockage online, seamlessly affiliated to a abundant app for Android and iOS.
My Nest acquirements thermostat in 2013 (Photo: Paul Kuehnel, York Daily Record)
The Nest has a clean design, aerial affection materials, feels solid mechanically and looks abundant in any room.
It managed to allegation and accomplish on my two-wire ascendancy arrangement after abacus an alien agent and wiring.
And it was the atomic adequate thermostat I accept anytime endemic for a hot water, casting adamant radiator heating system.
After four years of occasionally calling Nest and mostly ignoring a six-degree advance amid area the thermostat calls for calefaction and area the apartment in the abode overheat, I accept absitively to alter the Nest with a Honeywell RTH6500 Wi-Fi thermostat.
If I set the Nest thermostat to 62, the boiler comes on at 61 and runs until the thermostat is satisfied at 63. The calefaction from the casting adamant radiators continue to ample the apartment until the temperature is 65. The abode boring cools bottomward with the cycle, repeating a few hours later.
The heating arrangement was congenital about 13 years ago using a set of free-standing cast adamant radiators from the 1930s and a modern, "cold-fired" accustomed gas furnace. The abode is actual able-bodied insulated.
Originally, I acclimated a automated Honeywell annular thermostat and later, about 2005, a programmable Honeywell cyberbanking battery-powered thermostat with Smart Response Technology. Both of these thermostats maintained the temperature aural a degree.
The consummate adeptness of a beaming hot baptize arrangement over hot air is affiliated heat. The casting adamant moderates the heating cycles. The calefaction accident of the anatomy is in antithesis with what is advancing out of the radiators. What makes the apartment adequate is the aggregate of affiliated alteration and beaming heat, from cycles of heating, chastened by the casting iron.
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At first, I contacted Nest then abandoned the six-degree advance for years. Afresh on a alarm with Nest, a tech told me that my observations are actual and this thermostat isn't ill-fitted for my heating system.
The simple accession of the Nest in the Nest documentation. (Photo: Paul Kuehnel, York Daily Record)
There are settings for hot baptize calefaction on the Nest. Checking the Nest's "True Radiant" ambience seems to accomplish you ahead it adeptness assignment with casting adamant radiator heating, but that alone turns the heating antecedent on aboriginal back you appetite to accomplish a ambition temperature by a accustomed time.
Controlling overheating or calefaction apprehension -- the adeptness of a thermostat to ahead what the temperature will be in the allowance already the calefaction stops architecture from the radiators -- isn't rocket science. Thermostats accept done this for decades mechanically, by electrically preheating the bi-metal bounce that controls the thermostat. The heating aeon shuts off afore the target room temperature is reached while the radiators accumulate throwing out heat.
The automated calefaction anticipator on an old Honeywell annular thermostat can be set by the installer for the blazon of heating system. The blooming wire provides attrition that changes the accepted to pre-heat the spring. (Photo: Paul Kuehnel, York Daily Record)
On my battery-operated 2005 cyberbanking Honeywell thermostat with Smart Response technology, a computer affairs learns how far the heating system goes over the ambition temperature again shortens the heating cycle. If the aeon is too abbreviate to come up to allowance temperature, the heating cycle gets longer, until temperature in the room reaches a antithesis aural a degree.
It is somewhat amazing for the Nest, with all the computer power, functions, and acquirements ability and Wi-Fi server connectivity, that its engineers couldn't aloof affairs this into it.
Even bigger Nest: Create a user programmable over-heat ambit so the user could accept the best of both worlds of a best time amid heating cycles to aerate efficiency, with accretion the temperature spread up to the user's point of discomfort.
Maybe Nest is activity for efficiency. It is added able to blaze the algid furnace only a few times a day, rather than starting it almost algid abounding times a day, but it's absolutely uncomfortable, decidedly if you try to hover your accustomed abode acting near 60, and the abode is absolutely able-bodied insulated.
The acceptable account for Nest is that hot baptize and beef systems, decidedly with casting adamant radiators are dinosaurs, unless you are a crazy being like me who builds a new 1930s arrangement in 2004. They are few and far between.
The Nest works actual able-bodied with hot air systems, and my Nest lives on heating a home acrimonious by a gas hot air system. The new buyer is actual blessed with it.
My Honeywell RTH6500 Wi-Fi alternation thermostat (Photo: Paul Kuehnel, York Daily Record)
Back to a Honeywell thermostat
I replaced the Nest with a new Honeywell RTH6500 Wi-Fi alternation thermostat. This is a unit accessible at Home Depot and Lowes.
The Honeywell isn't as pretty as the Nest; the software and apps aren't as elegant. It doesn't accommodate a anniversary of heating history. The case is plastic-ky.
However, the Honeywell costs beneath than bisected of the Nest, and it keeps the temperature bedrock solid, to a degree.
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The app isn't as appealing or as functional, but it does the basics. You apperceive the temperature in the abode and can about-face the HVAC on and off remotely.
A nice accession is that Honeywell can send you an email at a called breach if your thermostat is no best affiliated to the Internet. It's a abundant way to acquaint you there has been a ability abortion at home while you are away. It sends addition email to acquaint you it has re-established the connection.
A claiming and solution installing the Honeywell RTH6500 on older two-wire ascendancy systems
Wi-fi thermostats charge a affiliated ability source. They are baby computers with an antenna that sends out a arresting at approved intervals that wouldn't be active actual continued after a affiliated ability source. The Nest happened to assignment with my two-wire arrangement using the ascendancy agent on the furnace.
Even if active a Nest off the ascendancy agent of your furnace works for you (sometimes it doesn't), it isn't ideal in that the ascendancy agent is alive harder to ascendancy your boiler and ability the thermostat, possibly abridgement the activity of the ascendancy transformer.
The best band-aid is to ability the thermostat by an alien 24-volt AC transformer. You accept no best with the Honeywell, as it needs an alfresco ability antecedent of power.
If you don't apperceive what I am talking about at this point or accept a agnosticism installing a thermostat, consult a able installer. It's consistently a acceptable abstraction to acquaintance the architect of the thermostat back base any agreement that is not abundant in the accession instructions. Always booty agenda of area your thermostat affairs were affiliated on the old thermostat afore removing, colors can vary.
Class II Agent - 24 Volt AC, 40 on Amazon is a nice closed band-aid for $16 to accumulation a ability antecedent to the Honeywell.
My 24 volt A/C agent that I bought from Amazon (Photo: Paul Kuehnel, York Daily Record)
I ran two new affairs from the agent to the thermostat up through the wall. Added avant-garde heating systems accept assorted affairs and a ability antecedent active to the thermostat.
With my two-wire system, there is one white and one red that affix to the furnace. I ran two new affairs through the bank to ability my thermostat.
The wire set-up on the Honeywell RTH6500.
Note: I removed the jumper on the RTH6500 thermostat, which looks like a little staple, amid R and Rc.
Connections central the Honeywell. W and R to the boiler and C and Rc to the AC transformer. The jumper, that looks like a baby staple, was removed amid R and Rc. (Photo: Paul Kuehnel, York Daily Record)
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