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Tankless coils

don_185
don_185 Member Posts: 312
in THE MAIN WALL
When you guys get a call for not enough hot water, do you find it to be scale or flow thru the coil to be the problem?

The reason I asked is..the ones I've been finding just need to be taken out of the boiler and clean all the crap stuck in between the fins.

If I may asked why does all the sludge gather at the coil?

No.I'm not going to sell them on a indirect.Smiley face inserted here.

Comments

  • Ken Field
    Ken Field Member Posts: 123


    Probably oxides from the boiler and all kinds of crud and flux left inside from manufacture and installation. If a boiler was cleaned and treated after installation, the coil would most likely be shiny when you pulled it out 10 years later. We don't clean hot water boilers but we always treat the water on first fill. We don't use boilers with coils so I can't say if it ever actually helped us. We do it because it is the right thing to do and it sets us apart from the hacks.

    Ken F

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  • Brad White_204
    Brad White_204 Member Posts: 20
    Indirectly Speaking...

    Stuff collects on tankless coils because it can.. :) Those fins are ripe to attract any loose deposits beautifully.

    In hard water areas, the inside becomes coated with minerals, lime, whatever is in the water because the water, when heated, drives those minerals out of solution. I would think that internal liming would be a bigger problem.
  • oil-2-4-6-gas
    oil-2-4-6-gas Member Posts: 641


    thats the 1 job i despise doing most times the bolts/studs break on the 1's i have done--cleaning ended up being a replacement anyway we don't clean little coils anymore -(the only coils we clean are for large apartments) ,--replace the coil and clean the system
  • Weezbo
    Weezbo Member Posts: 6,232
    i took a water line apart

    this week and it had sand in it ..the inch and a quater line i replaced with 12 feet of 1" and 1/2 braided water hose , stainless steel king couplings and double breeze clampsi am running the boiler water thru Caleffi dirtcals and spun one on my transfer pump to purge the boiler tank in the TT delta prior to lashing up a new wood boiler and using its coil to communicate with the wood boiler hydronically for hot water production and the Taco X block for heating.. the dirtcals seem to be as advertised.... might want to look into lashing one up on the boiler side return...

    i think that uponor makes some pretty fine water variety of filtration system for chemical debris and various particulates in the water...
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