Hire the best Air conditioning and Heating Experts

new Braemar ducted heating problem.

Results 1 to 19 of 19
  1. #1
    Novice Bobby Brown's Avatar
    Join Date
    Aug 2007
    Location
    Melbourne
    Posts
    20

    Default new Braemar ducted heating problem.

    We have just had a braemar ducted heater installed in our 12sq 2 bed house (TH320 3.7* 18kW 8 points in ceiling) and Ive noticed that the temperature fluctuates enough to really bug me. We set it to 21C and then end up in this cycle of feeling cold so bump it up to 23C and then back to 19C when it gets too hot.


    Why cant we just set it to 21C and have a reasonably stable amount of warmth? Is there something wrong with it? Did we make a mistake installing in the ceiling?


    I cannot contact the installer as they are impossible to deal with.

  2. #2
    1K Club Member
    Join Date
    Nov 2011
    Location
    Paradise Beach Vic
    Posts
    1,875

    Default

    I would agree that it is a problem with ceiling installs, ceiling fans may help to circulate heat a bit better rather than it accumulating up high in the room.

  3. #3
    Novice Bobby Brown's Avatar
    Join Date
    Aug 2007
    Location
    Melbourne
    Posts
    20

    Default

    Quote Originally Posted by plum View Post
    I would agree that it is a problem with ceiling installs, ceiling fans may help to circulate heat a bit better rather than it accumulating up high in the room.
    I would have thought most heating systems accumulate heat up high in the room? Its been suggested to me that if the blower on ceiling systems are powerful enough they can heat on the way down as well as on the way back up but I agree fans would be a good idea.

    Im wondering if the braemar defaults to a lower temperature trigger to turn the system back on which is too low in our case as we notice the chill returning to the room. Maybe I can adjust this temperature drop. Of course this means it might turn on and off more frequently.

    does anyone have a service manual for a TH320 they can send me?

  4. #4
    Senior Member
    Join Date
    Jul 2003
    Location
    Melbourne
    Age
    51
    Posts
    102

    Default

    I would have thought the controller would be the part that turns the unit on/off with temperature fluctuations. With some luck there might be a sensitivity adjustment.

    Is TH320 the model of the heating unit ? If so is there a model number for the controler anywhere?

    joez
    My Blog :

  5. #5
    Soldiers Earned Your Right To Free Speech watson's Avatar
    Join Date
    Sep 2006
    Location
    Avoca Victoria
    Age
    79
    Posts
    2,614

    Default

    Have you checked the Brivis Installers Manual in the Library???

  6. #6
    Novice Bobby Brown's Avatar
    Join Date
    Aug 2007
    Location
    Melbourne
    Posts
    20

    Default

    Quote Originally Posted by watson View Post
    Have you checked the Brivis Installers Manual in the Library???
    Hi Watson, Im after the Braemar installers manual, cant find it in the library.

    Does anyone have a copy they can forward me?

  7. #7
    Soldiers Earned Your Right To Free Speech watson's Avatar
    Join Date
    Sep 2006
    Location
    Avoca Victoria
    Age
    79
    Posts
    2,614

    Default

    OOPS..........all words starting with "b"..........sorry mate.

  8. #8
    Senior Member
    Join Date
    Oct 2005
    Location
    SE Melb
    Age
    48
    Posts
    124

    Default

    Where is your thermostat located? Is it centrally located? It may not be getting an accurate temp reading?

    Krico

  9. #9
    House Husband - 1K Club Member
    Join Date
    Apr 2007
    Location
    Upper Ferntree Gully, Melbourne, Victoria, Australia.
    Age
    55
    Posts
    1,202

    Default

    Quote Originally Posted by Bobby Brown View Post
    Hi Watson, Im after the Braemar installers manual, cant find it in the library.

    Does anyone have a copy they can forward me?

    Hold on and I'll have a rummage around the forums...... I sure i saw it here somewhere...

  10. #10
    House Husband - 1K Club Member
    Join Date
    Apr 2007
    Location
    Upper Ferntree Gully, Melbourne, Victoria, Australia.
    Age
    55
    Posts
    1,202

    Default

    Here is the link to the owners manuals
    Owner's Manuals

    I'm sure the installers manuals were kicking around somewhere at one time....

    My choice of a course of action (if you are unable to get any joy from your installer) would be to contact Braemar directly. I have found them very helpful. These days any company worth its salt would be keen to know that customers of their products are happy and satisfied with the product. Obviously if the installer has done something that doesn't match the requirements for a successful installation then they may not be able to directly do anything about it, but they may be able to suggest a solution.

  11. #11
    Seasoned DIY droog's Avatar
    Join Date
    Sep 2005
    Location
    Bendigo
    Age
    58
    Posts
    3,134

    Default

    Being a Braemar it should be using a SpectroLink controller. The controller shows the temperature.

    Are you saying that the temprature on the controller shows lower than the set temperature but the heater is not starting ? or is the temperature on the controller at or above the set temperature ?

    If the controller is at or above the set temperature it will not call the heater to heat the room and may just need to be relocated to a spot where it reads the room temperature correctly.
    Or it may be you have a single controller in a separate room ? Do you have a zoned system ?

    Let me know some further details, I can send you some of the manuals that I have but need to know where the problem is first.
    Regards Dave.

  12. #12
    Member
    Join Date
    Apr 2011
    Location
    Melbourne
    Posts
    64

    Default

    Bobby.
    Re: your PM, sorry don't have an installers manual for the braemar as I haven't installed systems for about 10 years now but I do system repairs and maintence regularly.
    I suspect the majority of your problem is that it is a in ceiling system, as pointed out with the previous posters.

    I am going to make a few assumptions as you haven't posted complete details;

    Ceiling systems will always take longer to heat due to the need to force the heat down when the heat wants to rise.

    A slow fan speed has a hard time circulating heated air around so it will slowly fill the room with heat top to bottom, you can comfirm this by standing on a chair and you can feel considerible heat difference.
    The fan speed may have been turned down to get rid of roaring outlets where these outlets are the first outlets near the heater, I used to run BTOs backwards or use longer duct runs for these outlets rather than turning down the fan. Your fan speed may be too low to distribute/force air around your room especially the outlets at the end of the duct run, also the system may not be balanced.

    The biggest mistake in a ceiling system IMHO is having the return air on the ceiling as it just cycles the hottest air in the house instead of heating the coldest air in the house as in when you have a low level return air installed in a cupboard but most people don't want to give up the space in cupboards. The next best is to have it high/mid level in the top of the cupboard with the grill mounted verticle.
    Polished floorboards and especially tiled floors are bad for heating as they are the last things to be heated, tiles especially will try to cool the room down making the low level(living level) cool compared to the rest of the house. To partly overcome this if you have either of these flooring options is to put a rug on the floor where your couch/chairs are located.

    Heating themostats aren't precision thermometers and DO NOT indicate the temperture in your rooms, 21degC on the themostat doesn't mean 21deg anywhere else in your house except at the the themostat location and at that level in the house. It is a relative temperture, I used to tell people to think the number on the display as a setting not a temperture just like you set the volume on your tv. Set the thermo low say 18 and wait a few cycles of the heater going on and off, if in your living area it is too cold still raise it up one deg on the thermo, let it cycle again and then continue doing that till you find a COMFORTABLE temp you desire. It will take about a week to find that happy setting.

    Don't overheat your house or you will certinaly pay for it in your gas and electric bills. Remember it take ~6-10% more gas to heat up maintain every degree in your house, the higher the delta-t(difference in inside and outside temps) the quicker the heat loss dispite insulation in your house. You don't want to heat up your house so everyone walks around in shorts and t-shirt in the during winter, maintain the house so it is comfortable when everyone is atleast in long sleeves and pants.

  13. #13
    Novice Bobby Brown's Avatar
    Join Date
    Aug 2007
    Location
    Melbourne
    Posts
    20

    Default

    System is a TH320 which is the simpler of the braemars without zoning (standard LCD thermostat - net spectrolink), according to the specs it produces 630 l/s of air, which is on average 80 l/s per ceiling duct (and yes the return grill is in the ceiling).

    I have been told that these systems are more efficient than floor grill ducted systems as they heat the room as air is forced down and then back up again.... I image this is the case only if the fans are powerful enough.... is 630 enough... for a BV house with 2.7m ceilings???

    What I think may be happening is that when the system is set to 21C the trigger temperature is dropping too low (say 18C for example) before the heater turns back on and then stays on too long and the room gets to say 23C. So the constant cycling of the air temperature from 18 to 23C and back gets annoying.

    This may not be the case where the thermostat is and may be a symptom of a poorly designed installation. But Id still like to try and get my hands on the installers manual to see what the heater trigger temperatures are.

    ps: does this heater need some kind of external drainage pipe for condensation?

  14. #14
    Seasoned DIY droog's Avatar
    Join Date
    Sep 2005
    Location
    Bendigo
    Age
    58
    Posts
    3,134

    Default

    I cannot be certain of the condensate drain but I believe the TH series does not have one.
    I do not have any manuals for the TH series and I only have the spectrolink controller manuals so am unable to help in that regard. As a note the spectrolink does not have any significant hysteresis, ie it will call for heat below the set temperature and switch off at the set temp.

    Regards Dave

  15. #15
    Seasoned DIY droog's Avatar
    Join Date
    Sep 2005
    Location
    Bendigo
    Age
    58
    Posts
    3,134

    Default

    What I think may be happening is that when the system is set to 21C the trigger temperature is dropping too low (say 18C for example) before the heater turns back on and then stays on too long and the room gets to say 23C. So the constant cycling of the air temperature from 18 to 23C and back gets annoying.


    Read more: http://www.renovateforum.com/f193/ne...#ixzz1yBqJ2O3p
    If you want to test this theory do the following:
    With the house cold, say 15C, turn the heater on and set to 20C. The display on the controller should revert to the room temperature, 15C, after a short time. If it does then the controller is displaying the actual room temperature and you can use the controller display to see if your theory above is correct.

  16. #16
    Apprentice (new member)
    Join Date
    Jun 2012
    Location
    Narre Warren
    Posts
    1

    Default

    Hi, I came across your question as I seemed to be having issues with my Braemar heating up to the temp I have set it at. However I have just climbed in the roof and discovered one of the insulation ducts has come away from a three way join so about to repair that. Hopefully that is my issue.
    Anyway, I have found a copy of the installation manual for :
    Braemar Ecostar Gas Duced Heaters TH3 - TH4 - TH5.
    Let me know if you need me to scan it for you!

    Catherine

    Quote Originally Posted by Bobby Brown View Post
    We have just had a braemar ducted heater installed in our 12sq 2 bed house (TH320 3.7* 18kW 8 points in ceiling) and Ive noticed that the temperature fluctuates enough to really bug me. We set it to 21C and then end up in this cycle of feeling cold so bump it up to 23C and then back to 19C when it gets too hot.


    Why cant we just set it to 21C and have a reasonably stable amount of warmth? Is there something wrong with it? Did we make a mistake installing in the ceiling?


    I cannot contact the installer as they are impossible to deal with.

  17. #17
    Novice Bobby Brown's Avatar
    Join Date
    Aug 2007
    Location
    Melbourne
    Posts
    20

    Default

    Attached are the installers manuals...

    maybe Noel would be so kind as to transfer to the library....
    Attached Files Attached Files

  18. #18
    Soldiers Earned Your Right To Free Speech watson's Avatar
    Join Date
    Sep 2006
    Location
    Avoca Victoria
    Age
    79
    Posts
    2,614

    Default

    Thanks heaps mate............Chrisp ( the new Mod) hasn't done that before so he's going to have a go.

  19. #19
    2K Club Member chrisp's Avatar
    Join Date
    May 2004
    Location
    Melbourne, Australia
    Posts
    2,815

    Default

    Thanks for the installation manuals! Both have been added to the forum Library ... and thanks for the opportunity to practice placing and indexing the files into the library.

    BTW we appreciate all sorts of manuals for inclusion into the library. Please keep sending them in.
    There is no middle ground between facts and fallacies - argumentum ad temperantiam

Similar Threads

  1. Braemar Ducted Heating Install
    By leeton in forum Plumbing
    Replies: 3
    Last Post: 3rd Mar 2012, 11:02 AM
  2. Ducted Gas Heating? Brivis, Bonaire or Braemar
    By Sir Stinkalot in forum Heating & Cooling
    Replies: 17
    Last Post: 14th May 2011, 04:02 PM
  3. Brivis Ducted heating problem
    By futronix in forum Heating & Cooling
    Replies: 33
    Last Post: 29th Apr 2011, 03:28 PM
  4. Ducted Heating
    By kasperflipped in forum Heating & Cooling
    Replies: 2
    Last Post: 25th Mar 2011, 08:33 AM
  5. Braemar ducted heating with added ref aircon?
    By Williamstown in forum Heating & Cooling
    Replies: 3
    Last Post: 10th Jun 2008, 08:18 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •