Two Stage Heat / Heat - Cool Programmable Thermostat Zoom

Two Stage Heat / Heat - Cool Programmable Thermostat

SKU:512

Brand: Tekmar

Tekmar
Qty Price
$144.35
/ each
$416.85 / box (3 units x $138.95)
In Stock! Ships in 24-48 Hours
(7 Available)
0

Resources

Specs

Application: Multi Stage (Heat/Cool)
Heat Pump
Stages:
?
2 Heat/1 Cool
Programmability: 7 Day
Programmable
User Interface: Push Button
Mount: Horizontal
Options: Works with Sensor
Large Display
Auto Changeover
Power Method: Hardwired
Temperature Range (F): 35°-100°F
Voltage:
?
Low voltage
Amperage:
?
2
Wattage:
?
48
Wiring: Com
S2
R
C
S1
Color: White
Height: 2-7/8"
Width: 2-7/8"
Depth (Inches): 13/16"
Weight (lbs): .46 lbs
Ambient Conditions: 32 to 122°F (0 to 50°C)
RH < 80% to 88°F
Control: Microprocessor PID control
Enclosure Type: J
Floor Sensor Compatible: Yes
Sensors: NTC Thermistor
10 k ohm @ 77°F
Relays: 24 V (ac) 2 A-Latching
Package Type: Accessories
Humidity Control: No
Wireless: No

Description for Tekmar 512


Control Description:
The 512 is a microprocessor-based thermostat intended for either two stage heating or heat-cool applications. The 512 allows for up to two auxiliary sensors. The auxiliary sensors can be used to measure air temperature to get an average temperature for large areas. The auxiliary sensors can be used to measure slab temperature in order to limit the minimum and / or maximum allowed slab temperature. Or the auxiliary sensors can be used to display the outdoor temperature and / or a remote temperature.

Two Stage Heat / Heat - Cool Programmable Thermostat

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by PowerReviews
TekmarTwo Stage Heat / Heat - Cool Programmable Thermostat
 
5.0

(based on 2 reviews)

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5.0

Easy function of thermostat.

By warren

from Silver Spring Md 20910

Verified Buyer

Comments about Two Stage Heat / Heat - Cool Programmable Thermostat:

The product worked our great. Very easy installation and control instruction. The thermostat was shipped and delivered earlier than what was expected, so we did not have any delays in returning to our customers residence. Great overall experience. Thank you.

 
5.0

very cool item

By lamby22

from Rhodel Island

Verified Reviewer

Comments about Two Stage Heat / Heat - Cool Programmable Thermostat:

used this product in a radiant heat floor works great and very flexible.

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5 Questions | 8 Answers
Displaying questions 1-5
  • Two Stage Heat / Heat - Cool Programmable Thermostat

    Q:

    The user manual never discusses setting a maximum slab temperature. What is the procedure for this operation?
    Asked on 9/20/2013 by Bill from Ben Lomond, CA

    2 answers

    • VERIFIED BUYER

      A:

      These thermostats are very versatile and I have installed a fair number of them. Once properly set up, I have had zero problems with them.
       
      The instructions for the set-up options are in the "Installation and Operation" manual. This should have come with the thermostat along with the user manual. If not, it is available from the Tekmar website (the PDF name for it is "512_D") at the following link.
       
      http://tekmarcontrols.com/images/_literature/512_dl_06.pdf
       
      The manual goes through all the options that can be adjusted for this thermostat (and there a quite a few) and I recommend you read through the entire manual before you do the set up. You may very well find variations on how to use it that you were unaware of. One suggestion; any features you are not going to use (for example the scheduling) turn them off. It makes the display simpler and keeps less knowledgeable operators from "fiddling" with the parts you would rather they didn't. You can also use the "User/Installer" dip switch inside the unit to limit the access level.
       
      I hope this points you in the right direction. Good luck!

      Answered on 9/20/2013 by Watcher from Oregon
    • CUSTOMER CARE

      A:

      The maximum slab temp settings can only be changed at the installer access level. The installer guide with this information can be found here on tekmar's site :

      http://tekmarcontrols.com/images/_literature/512_dl_06.pdf

      Answered on 9/20/2013 by PexSupply Staff from NY
  • Two Stage Heat / Heat - Cool Programmable Thermostat

    Q:

    My plumber installed the this thermostat and did not show or leave me any instructions on how to adjust or set it. It currently is running 24 hours and the floor is very warm. Can you help me.

    Thanks, Dale
    Asked on 9/7/2012 by dale from Clarkstonm, MI

    3 answers

    • VERIFIED BUYER

      A:

      I wired the unit and hung it on the wall, but left final set-up to my
      favorite HVAC pro. He ended up calling Tekmar to get it right. Some of
      the menu options are only available in "Installer" mode, which is accessed
      by the right combination of two tiny DIP switches on the circuit board.
      Is there a floor temp sensor, and does the thermostat know that?
      It's a great unit, but kind of confusing to get it set up right.
      -- Greg in Hancock

      Answered on 9/8/2012 by Anonymous
    • VERIFIED BUYER

      A:

      OK, the Tekmar t'stats are a bit more involved than your garden variety. Their primary advantage is their flexibility but that also means that it is hard to describe how to set them up because there are so many variables. You have to answer several questions to start the process of getting your settings right.
       
      Until you get everything figured out, here's how to turn it off, Press the Menu button until the upper left corner says "ADJUST" If above that it says "MODE" use the up/down arrows to cycle through the "OFF-COOL-AUTO-HEAT" or just "OFF-HEAT" and set it to off. Once it displays OFF in the mode page you can leave it alone and within a couple minutes it will turn off. It is off when there is no "H1" or "H2" along the bottom. If it doesn't say MODE, use the ITEM button to cycle through the choices until you get to the mode screen. You can only go one direction so if you go past it, you'll have to go through them all.
       
      I recommend you go to the Tekmar website and download the data manual and the user manual. Read through them. These t'stats are pretty sophisticated and they are German design. They approach things and descriptions differently than what we're used to here in the US. I have to refresh my knowledge of them every time I use one. They are very logical and make sense once you 'adjust' to their approach. It's very much like a German car, at first everything in it is a little weird, but once you start understanding how it works, it makes great sense, just different.
       
      http://www.tekmarcontrols.com/images/_literature/512_dl_06.pdf
      http://www.tekmarcontrols.com/images/_literature/512_ul_06.pdf
       
      Before and after you have read those, go through these questions. What is it controlling? Floor heat alone, floor and air heat, floor heat and AC? What kind of floor heat is it? High mass (concrete or gypcrete overpour, tile dryset) or low mass (underfloor staple-up with/without metal plates, grooved underlayment)? Is it using a floor sensor and if yes which terminals is it connected to?
       
      Use the answers to these to go through the manual and make adjustments to match your system. You may be able to get it without further aid.
       
      Here are some things to keep in mind that I have learned from past experience.
       
      There is a dip switch on the inside of the unit that switches between "installer/user" that you may need to change to access all the functions. Installer allows full access, user restricts what the buttons can do.
       
      Four buttons: Menu, Item, Up, Down   Menu steps you through the categories, Item steps you through the pages inside the categories and the arrows allow adjustment on the pages. Some of the categories are "Look, don't touch" and if you want to change settings, you'll usually want to be in the "Adjust" category, but that isn't true in every case.
       
      There are several ways it can be programmed. It is a two stage unit, but that's a little misleading. It is more accurate to say that it is a two output unit, it has two contacts that can be programmed to be staged for heat or to be one for heat one for cool. If it only controls floor heat, stage two is irrelevant. If it does floor and space heat, it will be programmed one way and another if it does floor and AC (the dip switch changes whether it is two stage heat or one heat, one cool).
       
      It can be on a schedule or not. If not, turn the schedule to OFF. That will make all the schedule options on the screen go away making it a lot easier to do the rest. If yes, turn it off until you get the rest figured out, then turn it on and adjust it.
       
      The unit has a built in air sensor like a regular stat and the ability to add remote sensors. And it can be programmed to use both the air sensor and the floor sensor. If you don't have a floor sensor, turn S1 and S2 OFF, then it will only use the air sensor. If you use the floor sensor and the air sensor (which can be good in certain circumstances) bear in mind that the unit will run the heat until BOTH setpoints are met. So if you have floor temp. set at 75F and the air at 71F, the unit will run the heat until the floor reaches 75F AND the air is 71F. It does not use one as a high limit and the other as a setpoint. If you don't need the air sensor, turn it OFF and just use the floor sensor.
       
       
      Once you get it adjusted, it'll be great. If you have further problems, reply with the answers to the questions above and any other pertinent data and I would be happy to help further.
       
       
      One further note, and this is for EVERYBODY, thermostats are NOT gas pedals, if you set it higher, it WILL NOT HEAT FASTER. It merely will not turn off until it gets that hot. With a high mass floor system, it can take hours to change temperature so if you are a bit chilly with it at 70 and crank it to 80, then go to work, you will return to a sauna and it will remain that way for HOURS. So, (again for high mass systems), if it's not quite warm enough, turn it up one degree at a time and give it time to adjust and the same for going down. You'll be much happier and so will your heating tech.
       
      Good Luck!
       
       

      Answered on 9/8/2012 by Watcher from Oregon
    • VERIFIED BUYER

      A:

      1. you can get the instructions on the internet.
      2. is it in program mode or customer mode.
      3. does it have an external temp sensor.
      4. need to find settings.
      5. is the back of the thermostat getting cold air from the whole in the wall.

      Answered on 9/10/2012 by Anonymous
  • Two Stage Heat / Heat - Cool Programmable Thermostat

    Q:

    Can this thermostat be used to control heat and a/c, and used with a remote sensor to control High AND low limits in a radiant floor slab?@
    Asked on 1/13/2012 by Anonymous

    1 answer

    • CUSTOMER CARE

      A:

      This thermostat can be used for heating and air conditioning. It can accommodate two separate sensors, including a slab sensor (with high and low limit), remote sensor, indoor sensor, or outdoor sensor.

      Answered on 1/31/2012 by PexSupply Staff from NY
  • Two Stage Heat / Heat - Cool Programmable Thermostat

    Q:

    Which tek mar floor/slab sensor do you need for this thermostat?
    Asked on 11/7/2011 by Anonymous

    1 answer

    • CUSTOMER CARE

      A:

      The floor sensor part number is 079

      Answered on 11/8/2011 by PexSupply Staff from NY
  • Two Stage Heat / Heat - Cool Programmable Thermostat

    Q:

    Does this thermostat come with the floor sensor?
    Asked on 9/3/2011 by chris from Homer NY

    1 answer

    • CUSTOMER CARE

      A:

      No, this thermostat does not include a floor sensor.

      Answered on 9/6/2011 by PexSupply Staff from NY
Displaying questions 1-5

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