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Fuel savings

Paul S_3
Paul S_3 Member Posts: 1,257
edited October 2017 in THE MAIN WALL
I have a customer that I will be installing A 2 pipe homerun radiator system, with a indirect heater....I will be using viega fostapex to homerun to and from each radiator a total of 19.... the customer does not want a modcon, he wants a cast iron boiler . He also would like some savings and use ODR. My question is what is the best way to go about this?.....I was thinking of using a Tekmar 356 to provide full ODR because it has boiler protection .... if I use the 256 I believe it doesn't provide protection to the boiler and will only provide partial reset... or should I use a 4 way iseries? Thoughts?.... is this a good setup? Boiler will be a Crown CWD.... there will be 2 zones plus priority zone.... TRVs are not in the budget either is a buffer.... and would I benefit in using a ecm pump for the heating zones? And am I over complicating this? Thanks
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

  • Leon82
    Leon82 Member Posts: 684
    The Burnham esc I think is the name has built in boiler protection to receive 110 degree water if I recall.

    I think it is also 60k btu on the small one. I considered it but it was double oversized for me.
  • Paul S_3
    Paul S_3 Member Posts: 1,257
    Thanks @Leon82 but I already filed the job and the model of the boiler is already in the approved plans so I'm committed to this boiler...and I don't want to change the boiler because the customer will do 2 weeks of research before I get a answer to use the boiler.... I know the Crown does have the ODR feature as a add on .... but wouldn't that just be partial reset?
    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
  • kcopp
    kcopp Member Posts: 3,990
    A tekmar 260 would be a good match. I have that on my 115 Buderus w/ HR panel rads. 60 gallon SSU indirect.
  • Danny Scully
    Danny Scully Member Posts: 1,334
    edited October 2017
    Taco fuelmizer? Trv on each rad?
  • Paul S_3
    Paul S_3 Member Posts: 1,257
    Trv not in budget.....fuel mizer wouldn't protect boiler with full reset
    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
  • Paul S_3
    Paul S_3 Member Posts: 1,257
    The 260 can't protect boiler with full reset
    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
  • Eastman
    Eastman Member Posts: 927
    What exactly are we defining as "boiler protection" here? Regardless of whether the system is using full or partial reset, I would think one would need more than simply a boiler return temperature sensor.
  • Harvey Ramer
    Harvey Ramer Member Posts: 2,221
    What is the buildings heat load. How much radiation and what is the net output of the boiler?
  • STEVEusaPA
    STEVEusaPA Member Posts: 5,689
    edited October 2017
    That control is not going to give you the 'boiler protection' that you think, as @Paul S alluded to. You're better off piping in the protection with a mixing valve (3way, 4 way, ESBE, etc.). My experience is that trying to rely on the sensor actually causes short cycling, so much so with oil, that I turned it off, added the above mentioned protection, and put in a buffer tank (6 zones, 4 radiant, 2 of those micro zones). Now I can do full reset.
    This is my house, with about 10 years of experimenting with controls and components and piping designs.
    Had I known then, what I learned mostly here, I would've went with one circ , trv’s.
    steve