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dirt in heating system

hrlevy
hrlevy Member Posts: 19
in THE MAIN WALL
The strainer on the water input to my hot water heater (Takagi) is getting clogged with some kind of dirt. I am having to clean it every other day. It may be coming from the inside of the old ceiling hung unit heater(the unit heater was not used for a few years). I was thinking about putting a whole house water filter in the system to trap the dirt before it gets to the hot water heater. any input..

Comments

  • hrlevy
    hrlevy Member Posts: 19
    clearify

    I forgot to say this is a closed loop heating only system. Except for the unit heater all parts are new.
  • icesailor
    icesailor Member Posts: 7,260
    Dirt and hot water:

    If you do install a filter like a Cuno 110 or whatever number it is, you MUST use the stainless Steel filter because of the hot water. You can use standard filters for H & C, but the plastic housings will not take the hot water. I have a Noritz water heater that is picking up some sort of anaerobic iron bacteria that is making a small scale that plugs the cold water inlet filter, slowing down flow. I used the Cuno stainless filter and it works well, It traps the scale but lets the water flow. When the flow stops, a lot of the scale drops to the bottom of the canister. But you MUST use the metal housing and it isn't cheap.
  • Gerry Alder
    Gerry Alder Member Posts: 25
    Dirt separators

    Don't reinvent the strainer just go with a dirt separator like dirtcal by Caleffi or spirovent also makes a good dirt separator, I prefer these over a simple wye strainer, then you could remove the tiny screen from the Takagi and be done with it.

    There was an error rendering this rich post.

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