Jager heater not heating up

Discussion in 'General Discussions and Advice' started by shaun777, 11 Jun 2014.

  1. shaun777

    shaun777

    Joined:
    24 Mar 2010
    Posts:
    205
    Likes Received:
    6
    Location:
    East London
    Hi guys

    I have a system with 450 litre water volume. I am running 1x 300w Jager heater rated from 600-1000 litres. It just doesnt seem to be heating the water to 25-26 degrees. Any idea why not or if the heater isnt sufficient?

    Any help will be appreciated.
     
  2. AdS Guest




    to hide all adverts.
  3. NJH

    NJH

    Joined:
    25 May 2012
    Posts:
    1,180
    Likes Received:
    176
    Location:
    Helderkruin
    Is it properly calibrated? Do a google search to calibrate it.
     
  4. butcherman

    butcherman Moderator MASA Contributor

    Joined:
    7 Sep 2009
    Posts:
    11,626
    Likes Received:
    280
    Location:
    Kempton Park
    I had to add a second jager over the last cold spell we had. Also running a 500 liter
     
  5. shaun777

    shaun777 Thread Starter

    Joined:
    24 Mar 2010
    Posts:
    205
    Likes Received:
    6
    Location:
    East London
    Yip it is properly calibrated. Also thought that might be the issue.

    So two 300w Jagers for a 500litre? then the heater rating are rubbish. rated at 600-1000litres
     
  6. shaun777

    shaun777 Thread Starter

    Joined:
    24 Mar 2010
    Posts:
    205
    Likes Received:
    6
    Location:
    East London
    So two 300w Jagers for a 500litre?
     
  7. mariusmeyer

    mariusmeyer

    Joined:
    7 Jul 2009
    Posts:
    3,054
    Likes Received:
    210
    Location:
    Jukskei Park, JHB
    I ran one 300w jager on 700L no issues and still only one on 1400L no issues keeping water at 25 over the last week. It al depends how cold the room gets where the tank is situated and tank insulation.
     
    shaun777 likes this.
  8. shaun777

    shaun777 Thread Starter

    Joined:
    24 Mar 2010
    Posts:
    205
    Likes Received:
    6
    Location:
    East London
    I don't have it insulated. having a cupboard made but its from fibreglass so that wudnt help. just dont understand how that heater isnt strong enough, how long shud it take to heat the water from say 22 degrees to 26 degrees? really expected a 300w jager to be enuf.
     
  9. hansiemyburgh

    hansiemyburgh

    Joined:
    7 Jan 2014
    Posts:
    431
    Likes Received:
    0
    Location:
    JHB - East Rand
    I would say add another 300w. It works better if they are different setting lets say one is 26.5 and the other is 27 then the one would be the others safety net. And from 22deg to 26deg is huge in a 450lt tank.
     
  10. RiaanP

    RiaanP Moderator

    Joined:
    11 Aug 2008
    Posts:
    23,155
    Likes Received:
    1,229
    Location:
    Centurion
    how is your heater placed?

    Best results the thermostat part should be upstream from the heater part. Else you measure the water you just heated and it switch off too soon.

    And yes, depends on the room, drafts, isolation cabinet etc.
     
  11. hansiemyburgh

    hansiemyburgh

    Joined:
    7 Jan 2014
    Posts:
    431
    Likes Received:
    0
    Location:
    JHB - East Rand
    @RiaanP what do you mean by this?
     
    Last edited by a moderator: 26 Nov 2015
  12. RiaanP

    RiaanP Moderator

    Joined:
    11 Aug 2008
    Posts:
    23,155
    Likes Received:
    1,229
    Location:
    Centurion
    the element part must be downstream from the thermostat part. If mounted sideways.

    So you do not end up with the just heated water flowing over the thermostat.
     
  13. hansiemyburgh

    hansiemyburgh

    Joined:
    7 Jan 2014
    Posts:
    431
    Likes Received:
    0
    Location:
    JHB - East Rand
    I see thought so, I have seen some guys out the heater horizontal. Thanks @RiaanP
     
    Last edited by a moderator: 26 Nov 2015
  14. rickgoldwing1

    rickgoldwing1

    Joined:
    10 Mar 2014
    Posts:
    995
    Likes Received:
    13
    Location:
    boksburg
    I think a big problem with those heaters is they are soooo long so to mount it vertically is almost impossible unless you have 500mm of water depth in your sump
     
  15. hansiemyburgh

    hansiemyburgh

    Joined:
    7 Jan 2014
    Posts:
    431
    Likes Received:
    0
    Location:
    JHB - East Rand
    I heard that they recon a heater in the main DT is more sufficient than in the Sump/Filter compartments. Anybody that could shed some light on this? @RiaanP
     
    Last edited by a moderator: 26 Nov 2015
  16. RiaanP

    RiaanP Moderator

    Joined:
    11 Aug 2008
    Posts:
    23,155
    Likes Received:
    1,229
    Location:
    Centurion
    main display would be better, but ugly.

    If you got a sump to hide equipment then use it. Jaeger heaters 300W is 410mm long if I recall corrctly. So yes, in most sumps it will be an issue trying to mount it. Plus sumps would be too narrow to go sideways. So you end up putting the heater in the sump lengthwise with the flow. As long as the heater part is "downstream". As long as there is flow it should be OK. In the display you will have the powerheads blowing the water around preventing a hotter area around the heater. Same with the sump, with adequate flow, you should not end up with a hot area around the heater giving false readings.
     
  17. butcherman

    butcherman Moderator MASA Contributor

    Joined:
    7 Sep 2009
    Posts:
    11,626
    Likes Received:
    280
    Location:
    Kempton Park
    yes my house gets very cold in winter
     
  18. JohanB

    JohanB

    Joined:
    28 Nov 2012
    Posts:
    189
    Likes Received:
    10
    Location:
    Midrand/Centurion
    I also have a 500 liter tank and have to use a second 300W Jager
     
  19. rickgoldwing1

    rickgoldwing1

    Joined:
    10 Mar 2014
    Posts:
    995
    Likes Received:
    13
    Location:
    boksburg
    I agree I have one heater in the sump but have a second long jager in my overflow chamber which is the full length of the tank with three outlets (so you don't see it in the Display area) and now my temp is stable at 25 degrees
     
  20. shaun777

    shaun777 Thread Starter

    Joined:
    24 Mar 2010
    Posts:
    205
    Likes Received:
    6
    Location:
    East London
    Thanks for all the advice guys. Really appreciate it. I went and bought another 300w Jager and it seems like that's done the trick. Just can't believe that one wasn't enough haha...
     
  21. Seabass

    Seabass

    Joined:
    28 Jul 2009
    Posts:
    2,383
    Likes Received:
    21
    Location:
    Gonubie

    Where from?
     
Recent Posts

Loading...
Similar Threads - Jager heater heating Forum Date
[wtd] Eheim Jager 250/300w heater Wanted 21 Oct 2016
Two 150w Jager Heaters on STC1000 Test Kits, Controllers, Reactors and Dosers 6 Jul 2016
[wtd] Jager 200w or 300w heaters Wanted 6 May 2015
[FS]: WANTED: Jager heater 150/200w: Bellville Wanted 11 Jan 2015
Jäger heaters Beginner Discussions 16 Sep 2013
Looking for a 300w Jager heater Wanted 1 Jun 2011
jager heater ► Sponsor Request Forum 8 Apr 2011