Anode rod threading on German system

Discussion in 'Solar and Geothermal Water Heating Forum' started by cprausa, Jan 26, 2019.

  1. cprausa

    cprausa New Member

    Joined:
    Jan 26, 2019
    Location:
    New Hampshire
    I have a solar hot water heating system that has a German tank. I need to replace the anode rod. I'm not sure of the manufacturer of the tank but model number is ESS-PU-300. I found an old price list from www.huch.com that includes some specifications. I'm trying to figure out what anode rod to order. The specifications make reference to "Magnesium protection anode of 1¼’’ The rods I'm finding available in the U.S. have a 3/4" pipe thread and it appears most have a 1 1/16" hex head for removal. Will these work or are the pipe threads metric on this hot water tank? I'm hoping to find this out before draining the system and pulling out the rod. Thanks for any help you can give me.
     
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Solar and Geothermal Water Heating Forum Solahart Passive System Anode Source Nov 22, 2015

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