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tekmar 256

Paul SPaul S Posts: 1,216
I was called on a job to wire a boiler using a tekmar 256....a different heating contractor installed boiler and could not wire customer provided control...I know how to wire it but when you have to put in what type of radiation is being used what do I put in if there's a combination of baseboard and radiant heating.....?....there is no boiler protection loop for low return water temp...thanks Paul S
ASM Mechanical Company
Located in Staten Island NY
Servicing all 5 boroughs of NYC.
347-692-4777
[email protected]
ASMHVACNYC.COM
https://heatinghelp.com/find-a-contractor/detail/asm-mechanical-company

Comments

  • SWEISWEI Posts: 7,356
    Tekmar curves

    From http://tekmarcontrols.com/images/_literature/e0003_06.pdf



    There is a minimum target temperature setting for the boiler that sets the bottom of the curve.
  • ZmanZman Posts: 3,340
    256

    Paul,

    The 256 will control the boiler with outdoor reset. You can set the boiler minimum output.

    It is not designed for two temp systems or boiler protection.

    Carl
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • Paul SPaul S Posts: 1,216
    edited November 2013
    256

    I can still use it right?....do they make a control for 2 temp systems? Thanks paul S (in other words what type of control you wouldve used on a application like this)
    ASM Mechanical Company
    Located in Staten Island NY
    Servicing all 5 boroughs of NYC.
    347-692-4777
    [email protected]
    ASMHVACNYC.COM
    https://heatinghelp.com/find-a-contractor/detail/asm-mechanical-company
  • SWEISWEI Posts: 7,356
    edited November 2013
    Two temps

    A 363 will manage two separate reset curves.  They're somewhat pricey.



    I'd probably just add a Taco iSeries-R for the RFH.
  • Paul SPaul S Posts: 1,216
    tekmar 256

    How come this control has a room occupied temp setting and a unnoccupied temp setting if it does not actually sense temp....i believe its a parallel heating curve ...can someone explain that? thanks paul s
    ASM Mechanical Company
    Located in Staten Island NY
    Servicing all 5 boroughs of NYC.
    347-692-4777
    [email protected]
    ASMHVACNYC.COM
    https://heatinghelp.com/find-a-contractor/detail/asm-mechanical-company
  • SWEISWEI Posts: 7,356
    It's a curve shift

    triggered by an external signal.
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