Ultra Easy-Up Manifold Kit for Ultra 155-399 (1-1/2" Piping) Zoom

Ultra Easy-Up Manifold Kit for Ultra 155-399 (1-1/2" Piping)


Brand: Weil Mclain

Weil Mclain
Qty Price
/ each
In Stock! Ships in 24-48 Hours
(5 Available)



Piping: 1-1/2"

Description for Weil Mclain 383-500-661

Installing an Ultra Gas Boiler Just Got Ultra Easy!


  • Saves Time
    • Ready to install design reduces average single-boiler installation time by two hours or more
  • Saves Money
    • Less than the cost of all components, plus assembly time (layout, measuring, cutting, soldering, etc.)
  • Easy Installation
    • A few connections while ensuring proper flow through the boiler
  • Eliminates Piping Errors
    • Helps ensure correct piping strategy by incorporating the primary/secondary piping requirement
  • Provides a Professional Appearance
    • Neat joints, top-quality components, color-code valves, precise & true installation
  • Makes Indirect Water Heater Installation Easy
    • Includes boiler flow check & take-offs for domestic hot water connection for now or in the future
  • Simple System Servicing
    • Manifold shut off valves provide quick isolation of the boiler & circulator from system piping
    NOTE: Circulator is NOT included in the Ultra Easy-Up Manifold Kit. A circulator ships with every Ultra boiler.

Ultra Easy-Up Manifold Kit for Ultra 155-399 (1-1/2" Piping)


by PowerReviews
Weil MclainUltra Easy-Up Manifold Kit for Ultra 155-399 (1-1/2" Piping)

(based on 1 review)

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Reviewed by 1 customer

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(1 of 1 customers found this review helpful)


Great start

By Rudy800

from Montana

Verified Buyer



      Best Uses

        Comments about Ultra Easy-Up Manifold Kit for Ultra 155-399 (1-1/2" Piping):

        It gets you way ahead of the game when building a boiler heating system

        • Primary use:
        • Personal

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        Q&A: Ask the Questions, share answers

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        get answers from real customers and in-house experts with AnswerBox.

        2 Questions | 4 Answers
        Displaying questions 1-2
        • Ultra Easy-Up Manifold Kit for Ultra 155-399 (1-1/2" Piping)


          I have a system with 3 circulating pumps one for each zone, can I use the easy-up kit? Would I have to install electric zone valves?
          Asked on 4/1/2014 by Tom from Glenside, Pa.

          1 answer

          • CUSTOMER CARE


            The manifold kit just covers the near boiler boiler primary/secondary piping. You can zone by pump without zone valves and still use this manifold.

            Answered on 4/22/2014 by SupplyHouse Staff from NY
        • Ultra Easy-Up Manifold Kit for Ultra 155-399 (1-1/2" Piping)


          does the ultra need this loop or can I use the boilers circulating pump as the circulating pump for the zone?
          Asked on 10/3/2013 by rob from anacortes, wa

          3 answers

          • CUSTOMER CARE


            Weil-McLain Ultra boilers require a dedicated boiler circulator and primary/secondary piping, although you do not have to use an Easy-Up Manifold Kit to create this set up.

            Answered on 11/1/2013 by PexSupply Staff from NY
          • VERIFIED BUYER


            You either need THIS loop or as in my case didn't have enough ceiling height so my plumber had to re-create this.( Took forever) I still have this piece sitting
            next to my boiler if you need:-)
            Anyway you look at this, it costs as much to install as the boiler costs. Very complex set-up, but I love it, No noise and heat bill cut less than in half.

            Answered on 10/5/2013 by Anonymous
          • VERIFIED BUYER


            Yes. The zone circulators do not circulate through the boiler; they circulate through the top straight piece in the loop. The boiler has counter current circulation through this loop. It seems a bit odd at first, but it is more efficient. It allows for a controlled (constant) flow rate through the boiler heat exchanger that is independent of the zone circulators; in other words the boiler circ flow is the same if one, two, three or even no zones are circulating. Doing it that way maintains rated efficiency throughout any load demand. The boiler modulates the flame to keep the temp changes measured in the zone loops relatively constant. That means optimum efficiency over a wider range of loads.
            The two stubs on the sides of the loop are for a DHW circulator which runs independently and is controlled by the boiler control panel. The system can be programmed to determine what system (DHW or zone heat) has priority. It usually works best to assign DHW the highest priority. DHW isn't required, but most will use it in a new install. I use mine in the wintertime and have the DHW heat exchanger in series with a hybrid heat pump water heater for summer use which allows the boiler to be shut down when zone heat isn't required. I run a circ pump through the two tanks in series and it is like having a 160 gallon water heater. That works exceptionally well by the way.
            Hope that helps.

            Answered on 10/3/2013 by Anonymous
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