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taco vs azel

hardlnocks
hardlnocks Member Posts: 2
in Thermostats and Controls

looking at a zone relay.

SR502-4Taco and Azel SP-82

using for a 2 zone system. what is the advantages of using one over the other . the Azel is 80.00 cheaper. using this for underfloor heating

Comments

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 17,478

    I don't know anything about Azel. Taco is decent quality, but I haven't heard anything bad about Azel.

  • STEAM DOCTOR
    STEAM DOCTOR Member Posts: 2,320

    Which boiler and boiler controller do you have ? Many of the boilers have the capacity to wire up two zones, using the boiler controller. Eliminating the need for a zone control.

  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,359

    That particular Azel control is for pumps. The specs. don't tell you how big the transformer is (20VA, 40VA, 80VA) and they don't give you a "C" terminal for power stealing thermostats or even transformer contacts.

    But if you have regular thermostats, the Azel is fine.

    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab
  • Steamhead
    Steamhead Member Posts: 17,680
    https://forum.heatinghelp.com/discussion/comment/1844804#Comment_1844804

    First I've ever heard of Azel. Taco would be my choice.

    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • GroundUp
    GroundUp Member Posts: 2,323

    Nothing wrong with the Azel. They're a little tighter than the Taco to get wires into, but they work just as well. If it were zone valves I'd stick with the Taco, but as a switching relay I've been using Azel almost exclusively since the 'Vid when Taco went unavailable. Did have one where the transformer started making noise after about 3 months but they warrantied it without any hassle, which is more than I can say for Taco.

  • 109A_5
    109A_5 Member Posts: 2,289

    There is a 'C' terminal, just one.

    image.png
    image.png

    High Capacity, whatever that means.

    image.png
    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System
    Alan (California Radiant) Forbesbjohnhy
  • psb75
    psb75 Member Posts: 1,022

    Taco has great tech support. They respond well on this forum as well.

  • Joe Mattiello
    Joe Mattiello Member Posts: 738

    first, I've heard of Azel. Taco controls are robust and have been recognized as a great product in the industry for many years. I worked as a tech support engineer for many years and have worked with many customers to facilitate installation. I can't tell you which one is better, because I'm not familiar with Azel, However,

    I will say on record buying a product that is more common in the industry, and synonymous with quality is always the right choice. Go Taco!!

    If you have any technical questions related to Taco zone controls, Taco tech support at 401-942-8000 is there to help. hopefully this was helpful

    Joe Mattiello
    N. E. Regional Manger, Commercial Products
    Taco Comfort Solutions
    STEAM DOCTOR
  • mattmia2
    mattmia2 Member Posts: 12,196

    looks like the taco stuff is in something more like a junction box and the azel stuff is in something more like tupperware.

    Alan (California Radiant) Forbes

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