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Weil Mclain CGA-4 PIDN Low Water Cutoff? and Outdoor Reset?

Gorrillasnot
Gorrillasnot Member Posts: 5
edited February 2019 in THE MAIN WALL
I just had this boiler installed today to replace my leaking older model CGA-4.
I noticed this model has the ability to ad an outdoor reset. At around $25 the kit seems cheap enough, but is it a worthwhile ad on to a conventional non condensing cast iron boiler?

Another question..Is it a good idea to ad a low water cutoff to this boiler? If so what brand would you all recommend and where should the probe be located?
I tried asking the guy that installed it and he basically said look it up in the manual..The manual mentions that a LWCO is optional, but doesn't say where to put it..

1 last question.. I would like to have a separate zone for the upstairs of my house as the way it is now I have to run a A/C up there during the winter because it gets too hot to sleep.

Would it be hard to setup a second zone? the installer says he charges $ to ad a zone.

thanks

Comments

  • Jamie Hall
    Jamie Hall Member Posts: 24,862
    No prices. That's one of the rules... we don't have many, but that is one.

    And no, it's not that hard to add a second zone -- sometimes. It depends a lot on how the system is piped.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    Erin Holohan Haskell
  • Gorrillasnot
    Gorrillasnot Member Posts: 5
    Sorry for breaking the rule.I would edit to remove price if I knew how.

    There are 2 bedrooms upstairs that are heated. I see 2 smaller pipes and one large pipe running upstairs through a closet.
    Likely would the 2 smaller pipes be the supply (1 to each room) and the 1 large the return?

    thanks
  • SuperTech
    SuperTech Member Posts: 2,430
    edited February 2019
    He didn't pipe that boiler correctly. The circulator pump should be pumping away from the expansion tank. Why is that expansion tank so crooked?

    I think the installer needs to read the manual more than anyone. LWCO is code in many areas. It would be installed on a tee in the supply main coming off the top of the boiler.

    Outdoor reset offers worthwhile energy savings for any hydronic boiler.
  • ChrisJ
    ChrisJ Member Posts: 16,316
    SuperTech said:

    He didn't pipe that boiler correctly. The circulator pump should be pumping away from the expansion tank. Why is that expansion tank so crooked?



    I think the installer needs to read the manual more than anyone. LWCO is code in many areas. It would be installed on a tee in the supply main coming off the top of the boiler.



    Outdoor reset offers worthwhile energy savings for any hydronic boiler.

    I'm betting that boiler can't be on two blocks spaced apart like that either.

    Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

  • SuperTech
    SuperTech Member Posts: 2,430
    edited February 2019
    Installations like this are what gives people the idea that having a circulator on the supply is bad.

    I had a customer today. 2nd failure of the expansion tank in three years. Constant air problems. It's pumping into the expansion tank. The pump is right off the top of the boiler, looks like they used a close nipple to connect the boiler to the flange. And they piped the fill valve into the return above the purge Valve! And it's the return for the first floor split loop, so one side of the first floor is impossible to purge with conventional methods.
    This customer still doesn't want to correct his near boiler piping properly, even after I explained pumping away every time I had a service call there. He wants me to put it on the return, because that's how he always sees it.

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