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Multi-Application 7-Day Programmable Electronic Thermostat, TL8100A1008

SKU:
TL8100A1008
Rating:
(36)
Q&A:
(12)
Multi-Application 7-Day Programmable Electronic Thermostat, TL8100A1008
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$114.49 each
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In Stock
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Product Highlights

Product Highlight: Programmability
Programmable, 7 Day
Product Highlight: Voltage
120v, 240v
Product Highlight: Stages
1 Heat
Product Highlight: Mount
Vertical
Product Highlight: Power Method
Battery
Product Highlight: Temperature Range (F)
32°F - 122°F

Description

Overview
  • Description: Multi-Application 7-Day Programmable Electronic Thermostat
  • Applications: Baseboards, Convectors, Fan-forced Heaters, Radiant Ceilings, Central Heating (Conventional)
  • Programmability: 7-Day Program
  • Power Method: 2 X AA (LR6) batteries
  • Electrical Ratings Maximum Load: 5 A (resistive), 2 A (inductive) @ 24 VDC, 120 Vac, 240 Vac; Compatible with millivolt systems
  • Electrical Connections: 6" (150 mm) tinned copper lead wires Differential Temperature (F): 0.1 F
  • Differential Temperature (C): 0.1 C
  • Stages: 1 Heat
  • Sensor Element: Thermistor
  • Approvals, Underwriters Laboratories Inc: Approved
  • Comments: Pump protection for hot water heating, Remote input, Packaged in clamshell
  • Used With: Aube CT240-02 Telephone Controller
  • Voltage: Millivolt Compatible
  • Voltage: 24 Vdc, 120 Vac, 240 Vac
  • Switch Type: Relay
  • Accuracy: 0.5 C

Specs

Application:

Hydronic Heating

Stages:

1 Heat

Programmability:

Programmable

7 Day

User Interface:

Push Button

Mount:

Vertical

Options:

Hidden Buttons

Power Method:

Battery

Temperature Range (F):

32°F - 122°F

Operating Humidity:

0% to 95% (non-condensing)

Voltage:

120v

240v

Color:

White

Height:

3.3"

Width (Inches):

3.1"

Depth (Inches):

1/2"

Humidity Control:

No

Wireless:

No

Contact

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Multi-Application 7-Day Programmable Electronic Thermostat, TL8100A1008
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Product Reviews

4.33 out of 36 reviews
86% would recommend this product
4.33
out of 36 Reviews
86% would recommend this product
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5 star
67%
4 star
17%
3 star
6%
2 star
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1 star
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Most Liked Positive Review

Perfect Thermostat for Baseboard Heaters

I replaced some old baseboard heaters (individual thermostats on each unit) and wanted a wall mounted programmable thermostat that would control 2 heaters. This Honeywell unit fit perfectly. It's power is supplied by its AA batteries so no power is needed from the baseboard heaters. I chose to use low voltage wiring to connect to the heaters, so the small wires could be buried easily without tearing up walls. The only negative is that programming isn't as flexible as other thermostats. There is only one daytime temperature and one nighttime temperature to choose from when programming the unit for automatic operation.
VS

Most Liked Negative Review

Unable to program, instructions poor in this area

Made two separate purchases. Units arrived quickly and in apparent good shape. Installation was easy. These replaced mechanical thermostats in an oil hot water baseboard heater system. They do a great job controlling temperature. I want to program them for only one temperature during the entire day and a lower temperature at night but cannot. The night time mode starts when I want but the daytime mode does not. The instructions have not helped. I wonder if I should try with the units in 24 hour clock mode.
Showing 1-10 of 36 reviews

This is an excellent thermostat, great value for the cost.

I use this thermostat for self generating millivolt control circuits. This is ideal for through the wall heaters and boilers which operate on 750 millivolt control circuits. Just 2-wires, no additional power required.
Boiler Doctor
Cleveland, Ohio
3 years ago
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Limited funtionality

Although a 7 day programmable thermostat, you can only program 2 temperatures for all 7 days. The only thing you can program is the time to raise and lower the 2 preset temperatures.
Top Gun
Detroit, MI
3 years ago
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Constantly making a loud clicking sound.

This unit constantly makes a loud clicking sound. My wife is bothered by it more than I am but now I am hearing it now. Annoying!
Merchant response
3 years ago
Hello, Thank you for your feedback, we greatly appreciate that you have taken the time to provide a review on this item. We apologize if you were unhappy with the item you ordered in any way. We do accept returns on items that can be determined to be defective. We sincerely apologize for any inconvenience you may have experienced. If you would be interested in setting up a return if this is a defective item or need assistance locating a different part please feel free to contact our customer care team at 1-888-757-4774 or chat online under “Contact & Support” on our website. Thank you, Danielle D. Supplyhouse.com Team
Schwindy
Jay, NY
3 years ago
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Very Easy to install and set up 120 volt thermostat.

My Sister's house had a unique setup. They ran 120V from the circulator motors to each thermostat. She had some ancient Honeywell thermostats that weren't working too well, and had no programmability. The only negative I can think of is that there are only 2 settings. Some of the other programmable ones have 4. The display is nice and large, and the Portrait format covers a lot of the older thermostats very well without having to touch up the wall paint. It screws right into the switchbox using the same screws.
NorthportMark
Northport, NY
3 years ago
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Service from SupplyHouse.com

Great, Product line, Service, and shipping is speedy delivery. When I need will order from SupplyHouse.com.
Frank
Provincetown, MA
4 years ago
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I would use this product again for this application.

Someone install the boiler system in an apartment building I serviced. I heard from the owner that the pump couplers have been failing on all the pumps. I noticed the pumps short cycle the lot. There was no pump relays. 120 volts went right to the thermostats to turn on the pumps and they would short cycle 100 plus cycles a day. This inductive load digital thermostat solved the problem!
Neptune
Wadsworth Illinois
5 years ago
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Great product, great service!

This is the absolute best 120v line voltage thermostat. I am using for oil fired boiler where there are limited choices. After using inferior other brand thermostats I called Honeywell and this was the recommended product. Will not disappoint and easily fits into electrical box. Ordering a second one for second zone today.
NYBOATGUY
Long Island, NY
5 years ago
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Great thermostat- just replaced mine after 10 years of great

Unscrewed the old one and attached the new face to the original back, just put new wires to same wires - so easy! Heat back on ! Thanks for the fast delivery!
Joe
SE Kansas
6 years ago
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Great price, shipping and thermostat!

Designed for hot water systems Very efficient unit w programmable periods Decent price for a specialized unit Very pleased, bought 4 to trade out several 20 year old radiant heat thermostats
Bobo
Colorado
6 years ago
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Great product. I would certainly buy it again.

I'm using this thermostat to run the fan in a toe kick heater, it was the only unit I found that used an actual relay for output control, not electronic based. It's battery operated so there was no issue with lose of power from the open circuit from the temperature limit switch on the heater. I would certainly use it again.
Phil A.
Rockland Co. NY
6 years ago
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Product Q&A

12 Questions
12 Questions
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Q: Does this unit work with baseboard heaters? I have non programmable 'stats in each room and want a programmable unit. Suggestions????

Asked by john 11 years ago

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It depends on what type of heat your baseboards use. If they are like mine, hot water baseboard heat, which is supplied by an oil fired boiler, then yes, they will work. I have two of these thermostats that I bought to replace two old non-programmable units in my home (2 zone heat). They work great, and are very easy to set up and use. If your baseboards are electric heat, with coils in them, then I don't think these will work.

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I don't know why they wouldn't work because they show a wire diagram for line voltage electric heater. you would want to make sure they was wired correct. I have about 8 of these and l really like them Good luck. Arlie

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The baseboard heaters that I have are forced hot water baseboard heaters and this worked perfectly. I have one for my upstairs and one for my main level. I did a lot research and besides the Google thermostat (Nest), this is the best one out there. I can't comment on how it would work for electric baseboard heaters though.

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Yes it works It only use 2 wire, it has a relay inside that turns on and off It can work with 24v, 120v and 220v. Arq. Jesús Barberena N.

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- Watcher

First, you need to answer a couple of questions. I assume you are referring to electric baseboard heaters and not hydronic (hot water) units. If that is not accurate and you do indeed have hot water baseboards, you can usually use just about any low voltage thermostat that you would like with those. Confirm that they operate on 24 VAC low voltage and choose the features that you want.   If, on the other hand, you ARE referring to electric baseboard heaters, it depends on the current draw of the heater in question. These thermostats CAN switch 120 VAC or 240 VAC circuits but only 2 amps worth of load. If your heater is larger than 480 watts (volts times amps = watts) then this thermostat will be unsafe.   For larger loads with similar functionality, you could possibly use this unit (good for 16.7 amps, 2000W @ 120 VAC or 4000W @ 240 VAC): http://www.supplyhouse.com/Honeywell-Aube-TH106-7-Day-Programmable-Line-Volt-Thermostat-for-Electric-Heating   Or this one (good for 14.6 amps, 1750W @ 120 VAC or 3500W @ 240 VAC): http://www.supplyhouse.com/Honeywell-TH105PLUS-5-2-Programmable-Line-Volt-Thermostat-for-Electric-Heating   Another option, which would be a bit harder, would be to add a load switching relay to handle the high current load of the heater element and use a low voltage thermostat to switch the relay. There used to be relays specifically sold for this purpose and made to use on baseboard heaters. But that is kind of old school and I haven't seen those available for some time. Still, the principle is sound, so as an FYI about one other possibility for you if you have the knowledge and expertise to do it safely.   I hope this has been helpful. Good luck!      

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i used it as the single thermostat for the whole house. works with hydronic baseboard.

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Q: We live in a Mobil home and use a furnace for heat. We want to set it to drop the temperature at bedtime and raise the temperature right before we get up. Is this going to meet my needs?

Asked by Linda 14 years ago

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Yep, this one will do it.

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Yes Sent from my iPhone

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If it is a gas furnace with small, thin wires, yes. Not if the wiring is 115 volt like a base board heater. Sent from my iPhone

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Q: I was told to hook this up - to connect to terminals 1 and 3, but the wires coming from the 24volt valve uses three wires -- any suggestions

Asked by Steve 14 years ago

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- Another PexSupply Customer

This thermostat is a very simple battery powered relay that works on time and temperature. It is a simple on/off single pole -single throw switch. I am not sure what the function of the 3rd wire is on the 24 volt valve you reference is used for. You must identify what 2 wires turn your fuction on/off and connect it to this thermostat relay. I used this to replace an older 2 wire 120v line voltage manual thermostat. This may not be the thermostat that you need for your application. :-)

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- Another PexSupply Customer

If this is the thermostat I have, and I believe it is, it is only suitable for 120 or 240 volts feeding an electric heater or, as in my case, the 120 volt power to a gas-fired unit heater. The 24-volt supply for the gas valve comes from a transformer on the heater unit that feeds a control unit for the gas-fired heater. If you need a thermostat for 24-volts you may have the wrong item.

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- Another PexSupply Customer

Sounds like your 24volt valve needs to be powered open and powered closed if it has 3 wires. You will need to use terminals 1-2-3 in this case. Wire your common to 3 (24v) Valve open to 1 (N/O) and Valve closed to 2 (N/C). Hopefully it is noted on the valve which wire is which or its marked on your original thermostat.

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- Another PexSupply Customer

No expert but, 2 of your 3 wires should activate your heater. The third may be a neutral( not necessary for this thermostat) or a for A/C unit. Test your wires to see which 2 activate the heat and connect them to terminals 1 and 3 on the T8100.

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Q: I would like to use this thermostat on a boiler system with hydronic valves 24 Volt. Is this a good choice

Asked by Anonymous 14 years ago

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Verified Author and ReplyVerified Reply- PexSupply Staff

Probably not, as this is a line voltage thermostat. Systems like yours generally use a low-voltage thermostat.

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- Another PexSupply Customer

I am using these thermostats with my radiant system (24v) and they work great. -Chris

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- Another PexSupply Customer

Yes, this is a very basic programmable thermostat that should support hydronic valve applications.

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- Another PexSupply Customer

Yes. This is a perfect choice. I have used them many times. They are very reliable and user friendly.

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- Another PexSupply Customer

I have been using this same thermostat for over a year now in the same system described in the question. We have had no trouble and have found it easy to use. I would say this is a good choice

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- Another PexSupply Customer

I understand it is quite good for this type of application (I'm assuming it is a hot water radiator system). It keeps the temperature within 1 degree of the set point.

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- Another PexSupply Customer

Great product. I use a 120 v like this one on a simple water tank pump that runs to my pex in my floors plan simple easy . Sent from my Verizon Wireless 4GLTE smartphone

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- Another PexSupply Customer

I used the thermostat with a Slant Fin Combi Cat Lynx residential hot water boiler unit after checking with their technician.. Please review the specs at Slant Fin to ensure compatibility with your type unit.

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- Another PexSupply Customer

We have used these on several installations with no complaints. They work very well as a heating only zone thermostat. One reason we like them is their pump exercise option which is good for systems that sit idle during the summer to prevent pump seizures. The only drawback I have observed with them is that the relay switches with a noticeable "click" when it turns on or off.  I installed one for a relative and noticed in the middle of the night that when it cycled, it was louder than I would prefer sleeping in the adjacent bedroom. Apart from that, zero problems.   Using it with valves should be fine, depending on how you are planning on wiring it. If you are using a zone valve controller (like a Taco ZVC-503 or 504, etc.) it just connects to the thermostat "T-T" inputs and your valves get connected to that zone's valve output. If you are wiring the t'stat directly to the valve, then make sure keep the wiring for the valve end switches straight so you don't short the transformer when a valve opens.   Also, just FYI, if you are using a zoning controller of some sort, you can use pretty much any heating capable t'stat you like. The valves don't care and the boiler won't either. If you are not using a controller, then you have to be more aware of what is getting connected to what and that may narrow your choices.   Good luck!   .

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- Another PexSupply Customer

I bought several of these and they work great. They are much better than the original wirsbo thermostats. Sent from my iPhone

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Q: Does the display on this model light up

Asked by 15 years ago

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Verified Author and ReplyVerified Reply- PexSupply Staff

No, this thermostat does not have a lighted display.

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Q: Can I use this thermostat for radiant floor heating controlled by a TACO ZVC 406 controller and TACO zone valves?

Asked by 15 years ago

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Verified Author and ReplyVerified Reply- PexSupply Staff

You cannot. This is a line voltage thermostat. The Taco ZVC works with low-voltage thermostats.

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Q: Would this thermostat be a good choice to run my grundfus ups15-58c directly not using zone valves? Are there any other models that might be better suited for this application?

Asked by bucksnort 15 years ago

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Yes, this would be a good choice.

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Q: Does this unit only come in white or does it come in taupe or almond color?

Asked by PTGCND 15 years ago

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This thermostat is only available in white.

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Q: can it be used on a Valliant GA92 gas fired hot water boiler? heat only - Honeywell TL8100A1008 TL8100 Programmable Hydronic Thermostat - Heat-Only Part Number: TL8100A1008

Asked by bob 15 years ago

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You need to check the specifications of your heater and the thermostat to make sure they are compatible.

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Q: Can this thermostat be used in a single pipe, oil-fired steam boiler?

Asked by ajax 16 years ago

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No, we would not recommend using this thermostat for a steam boiler.

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