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Injection mixing controllers

Dave_8
Dave_8 Member Posts: 49
that the Erie boiler boss systems give us the best results with the least troubles and they are full vs.

Comments

  • lekpeter
    lekpeter Member Posts: 35
    Injection mixing controllers

    Any favorites out there for controlling three injection pumps reliably and economically?

    Thanks

    Lek
  • Ken_8
    Ken_8 Member Posts: 1,640


    Taco, Argo, B&G and Honeywell all make multiple pump relays. All in the same ballpark price-wise.

    If you're into variable speed - that's a whole 'nother magilla.



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  • hr
    hr Member Posts: 6,106
    I like

    the Grundfos MixiMisers. Basically a Grundfos pump with check, and a tekmar VS board built in.

    I think many of the Taco expandable releys can have a VS "card" plugged into them.

    Wirsbo has a two VS control. I don't know that anyone makes a 3 controller under 1 hood :)

    hot rod
    hot rod

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  • lekpeter
    lekpeter Member Posts: 35
    injection mixing controllers

    Thanks for the replies.
    The controllers need to do variable speed. I was hoping to get the control in one package, but I guess it's 3 separate units.

    Lek
  • Paul Bock_2
    Paul Bock_2 Member Posts: 40
    Nice looking unit,

    I can't find any info on it on their web site. any idea where i could get a cut sheet? thanks, Paul.
  • Terry H.
    Terry H. Member Posts: 73
    Hot Rod

    How has it worked? If it's grundfoss and tekmar it should work well but, does it? I've been waiting on someone's actual experience before jumping in.

    Terry H.
  • Paul Bock_2
    Paul Bock_2 Member Posts: 40
    Yes, thats good

    thanks for the link, Paul
  • Joe Mattiello
    Joe Mattiello Member Posts: 703
    injection mixing control

    The Taco PC 705 injection mixing control is user friendly with an interface terminal to facilitate the wiring, when using a Taco control panel. Additionally, this control has a load reset feature to maintain temperature in the low temperature loop. For your convenience I have attached a PDF document. Please visit taco-hvac.com, if you require additional information.
    Joe Mattiello
    N. E. Regional Manger, Commercial Products
    Taco Comfort Solutions
  • GW
    GW Member Posts: 4,675
    Joe

    Will it operate two pumps in series? Please see my "Genius" post.

    Gary

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    Gary Wilson
    Wilson Services, Inc
    Northampton, MA
    [email protected]
  • Jed_2
    Jed_2 Member Posts: 781
    Joe, the problem is

    he needs 3 VSI pumps, so he would need 3 EXP boxes. Now, how many zones on each VSI sub-system is the question. The EXP's, as I see it, only are available in 3's, 4's, & 6's. Don't get me wrong, I like the system a lot, and have sold may, and turned many of the unaware on to the Taco system. It works, and works great. But, it might not meet the needs of this system, without spending moocho excess $$$$$$. Independent VSI controllers seems to be the answer here - Tekmar 356, or the like, might be called for. And the Mixi-Miser seems to be a stand alone option.

    Just my off the top thoughts.


    Jed
  • tombig
    tombig Member Posts: 291
    Erie

    Never used the Boiler Boss tho it's avail. thru one of my regular suppliers. I've had a couple Erie zone panels with bad t-forms out of the box (sorry Erie) which forced me to rethink the Honeywell R8888. It's expandable w/priority, quiet and trouble free so far. All zone panel mfgrs. should look into engineering replaceable t-formers. If you plug in the relay, why not the power supply???

    I've been using the Tekmar 356 and 371.
  • Wayco Wayne_2
    Wayco Wayne_2 Member Posts: 2,479
    VSI

    Why not use the Wirsbo 212 control which can operate 2 VSI temps and fill out the 3rd using the Grundfos mini mizer. That was you get control of the WWSD and the system pumpp control and also get VSI on 3 zones. I'm looking at a job that needs 3 different temps, (slab, plates and suspended, radiant floors) so I am watching this thread with interest. I might just use the Wirsbo 212 control for the 2 most critical and then use a thermostatic mixing valve for the 3rd. We'll see.

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  • Boilerpro_3
    Boilerpro_3 Member Posts: 1,231
    Hey Tom, look at B&G

    I believe they have replaceable transformers, sort of. I think you connect a new trans to two screw terminal provided. I alos like thier single zone pump panels, they have a dpdt relay with all poles available. Comes in handy when getting into some strange control wiring.

    Boilerpro
  • Boilerpro_3
    Boilerpro_3 Member Posts: 1,231
    WW, can you .....

    use a single VSI and just mix down to your other temps with fixed 3 ways (no motor or thermostat). See the Genuis thread. I posted there as did someone else about this.

    Boilerpro
  • hydronicsmike
    hydronicsmike Member Posts: 855
    Wow.

    I see a lot of talk about Relay Boxes in here. Wasn't he looking for Variable Speed Injection Mixing Controls?

    The tekmar, Wirsbo, Taco and Grundfos Controls will all work well for this application, but as mentioned, none of them can do three within one control.
  • Wayco Wayne_2
    Wayco Wayne_2 Member Posts: 2,479
    Hot Rod

    I am interested in the Grundfos MixiMizer but can't find any info on it and my supplier thinks I'm making it up. Can you give me a lead please? Thanks :)WW

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  • Boilerpro_3
    Boilerpro_3 Member Posts: 1,231
    Mike

    always tekmar, with a small "t". always thought that was funny.

    Boilerpro
  • Kal Row
    Kal Row Member Posts: 1,520
    this from a tkemar engineer..

    try to set the balance valve on the injection loop to keep the injection pump at or above 60%, less than that, you could have torque problems (especially starting)


    any of the currant tekmar variants can handle 2.4 amps
    so while you may have the pumps piped in series, electricaly though, they are in paralel, and as long as both of them together arent more then 2.4 amps, it should be fine

    Boilerpro: i will try to remember to ask the tekmar guy, why their trademark has a lower case "t", maybe because they are "middleware", relegated to a support role in a total system. (their european name "kanmor is also lowercase)
  • Kal Row
    Kal Row Member Posts: 1,520
    i asked...

    about the lowercase tradmark and they have no clue, other that it came from europ like the origonal "kanmor"

    also for multi speed grundfos pumps, they need speed 2 or 3
    not enough starting tourque on speed 1 with the wavefrom choping speed control method they use,

    and they confirmed that two pumps wired together are ok, as long as they dont start past 2.4 amps together, they can handle it
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