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Temperature of hot water

  • 21-04-2021 10:50pm
    #1
    Registered Users Posts: 19 ✭✭✭ way forward


    Hi
    Have solar installed and its heating hot water. Have anybody came across a way to know what temp is in cylinder . Just if you wanted to have a shower in morning is there any way of checking temp
    Thanks


Comments

  • Moderators, Society & Culture Moderators Posts: 31,312 Mod ✭✭✭✭ Gumbo


    Hi
    Have solar installed and its heating hot water. Have anybody came across a way to know what temp is in cylinder . Just if you wanted to have a shower in morning is there any way of checking temp
    Thanks

    I’ve been chasing this myself as I have an eddi.
    Sometimes during winter, not a lot gets diverted but enough to heat for a shower.

    I’ve resorted to manual method of putting my hand on the top pipe that leaves the cylinder. That pipe is directly touching the water in the cylinder, so if that’s hot, inside is scalding. If that’s warm, inside is hot etc

    Think of it like a spoon in a cup of boiling water. Think of how the spoon heats up.


  • Registered Users Posts: 987 ✭✭✭ db


    Do you not have a sensor at the top of the tank to give you the temperature?


  • Registered Users Posts: 2,752 ✭✭✭ graememk


    You can get a thermometer that can be mounted into the tank. My dad has one on his.

    If it's a copper tank with foam insulation you could get this and push it under the insulation at the top.

    https://www.amazon.co.uk/Thlevel-Thermometer-Temperature-External-Refrigerator/dp/B07TY6HRL4/ref=mp_s_a_1_4?dchild=1&keywords=thermometer+with+probe&qid=1619074600&sprefix=themometer+with+pro&sr=8-4

    Or zip tie it to the pipe coming out but allow a few degrees as Gumbo says. As soon as you turn water on it will shoot up to the actual temperature


  • Registered Users Posts: 433 ✭✭ mun1


    I’m using 3 of these sensors to see if i can tell how much hot water is in the tank.
    One is placed on the pipe coming out of the top of the tank.
    One is on the middle pipe (mid way down the tank) and one is just for ambient temperature in the hot press.

    Been looking at this the past 2 weeks and it looks like the one attached to the middle pipe gives a good indication when you are running out of hot water.

    I used to try to judge it by the power consumed so if the tank got 7-8kw in a day it would be full of hot water (the iboost cuts out)
    Get about 35-40 mins of hot water for showers out of a full tank.


  • Registered Users Posts: 16 Duine_Eigin


    Gumbo wrote: »
    I’ve been chasing this myself as I have an eddi.
    Sometimes during winter, not a lot gets diverted but enough to heat for a shower.

    I’ve resorted to manual method of putting my hand on the top pipe that leaves the cylinder. That pipe is directly touching the water in the cylinder, so if that’s hot, inside is scalding. If that’s warm, inside is hot etc

    Think of it like a spoon in a cup of boiling water. Think of how the spoon heats up.

    You could get the optional relay board for the eddi which will give you the temp in the tank. You need a PT1000 temperature probe too, I got mine on amazon. The temp is shown on the screen of the eddi and also in the app (if you have the myenergi hub installed). It's a simple install; just a matter of opening the eddi, fitting the relay board and plugging in the connector. It will also give you additional relay outputs for the eddi to control devices other than the immersion.

    https://myenergi.com/product/eddi-relay-sensor-board/


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  • Registered Users Posts: 19 ✭✭✭ way forward


    Hi
    Dont have a eddie or a sensor at top of tank . Will take a look at amazon.


  • Moderators, Society & Culture Moderators Posts: 31,312 Mod ✭✭✭✭ Gumbo


    db wrote: »
    Do you not have a sensor at the top of the tank to give you the temperature?

    I don’t.


  • Moderators, Society & Culture Moderators Posts: 31,312 Mod ✭✭✭✭ Gumbo


    You could get the optional relay board for the eddi which will give you the temp in the tank. You need a PT1000 temperature probe too, I got mine on amazon. The temp is shown on the screen of the eddi and also in the app (if you have the myenergi hub installed). It's a simple install; just a matter of opening the eddi, fitting the relay board and plugging in the connector. It will also give you additional relay outputs for the eddi to control devices other than the immersion.

    https://myenergi.com/product/eddi-relay-sensor-board/

    Cheers. Seen that but don’t have the hub either.
    It may be something to consider if I ever change my car charger to a zappi as I’d require the hub at that stage.


  • Registered Users Posts: 19 ✭✭✭ way forward


    db wrote: »
    Do you not have a sensor at the top of the tank to give you the temperature?

    What is the sensor at top of tank ?


  • Registered Users Posts: 5,136 ✭✭✭ championc


    What is the sensor at top of tank ?

    Normally some sort of probe, touching the copper cylinder, and relaying the information to a digital readout


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