Hot Water heater Connections

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by pilotboat, Feb 7, 2007.

  1. pilotboat

    pilotboat New Member

    Joined:
    Nov 9, 2006
    New hot water heater (GE) has female galvinised pipe fittings built flush to the surface of the tank. A galvinished pipe riser is installed so it can be piped onto a copper adapter. My question is "dosen't the two disimilar metals cause problems down the road?"' and "should pipe dope or teflon tape (or both) be used between the copper fitting and the gal pipe?"
     
  2. GoTanklessToday

    GoTanklessToday In the Trades

    Joined:
    Jan 11, 2007
    Location:
    Renton, WA
    Where I'm from, we use flexible copper connectors that are designed to attach to galv fittings. You must use dialectric union if you are going to run your copper water lines straight to the heater.

    http://www.hammerzone.com/archives/plumbing/systems/components/union_de/intro.htm

    And by the way, its a cold water heater, not a hot water heater. haha
     
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  4. Gary Swart

    Gary Swart In the Trades

    Joined:
    Sep 1, 2004
    Location:
    Yakima WA
    The tank should have had the nipples included. They are not galvanized, but a material that will safely make the transition to the copper flex lines. I use the old fashioned pipe compound rather than tape, but tape will work.
     
  5. markts30

    markts30 Commercial Plumber

    Joined:
    Sep 25, 2006
    Occupation:
    Commercial Plumber
    Location:
    Phoenix, AZ
    If you have a re-circ system, it could be considered both...LOL
     
  6. Randyj

    Randyj Master Plumber

    Joined:
    Nov 25, 2006
    Location:
    Alabama
    Boy am I confused... I thought it was a heater that made the cold water hot???? Or does the heater make it cold???? HELP>>> I'm going to weird out.
     
  7. GoTanklessToday

    GoTanklessToday In the Trades

    Joined:
    Jan 11, 2007
    Location:
    Renton, WA

    Touche! :D
     
  8. kordts

    kordts In the Trades

    Joined:
    Oct 15, 2005
    Occupation:
    industrial service plumbing foreman
    Location:
    exurban Chicago
    Our area has hard water, so I remove the factory nipples and use brass.
     
  9. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    heater

    if you are going to pedantic over semantics, then it is a "cold water heater" for a couple of minutes until the water is raised one degree. Then it becomes a "warm water" heater until the water temperature increases even more. At that point it becomes a "hot water" heater until the thermostat is satisfied.
     
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