Browse Forums Heating, Cooling & Insulation 1 Mar 11, 2008 7:31 am Hi - looking at getting some DGH installed, and house is on a slab.
A ceiling inlet would really suit us - as cupboard space is at a premium, but I have heard (hot air rises) this is not a good option. Any one got any advice on this - it is really that bad? How deep does a wall inlet need to be about? Also - looking at getting the unit installed in the ceiling, and I have also heard that outdoor units are preferable for noise issues. Are outdoor units more expensive to install - do the have tubes going up into the roofline outdoors? Thanks All Re: Ceiling Inlet for Ducted Heating? 2Mar 14, 2008 5:55 am Hi joe,
ideally the return air should be at floor level to help keep the heat down at floor level... brivis will actually not guarantee their systems to work properly if the return air is installed in the ceiling. If you can put it in the wall you'll need the equivelant of 300mm or 350mm diameter - which can be a really skinny rectangle if you wish the house i moved into has a stadt ducted heater which IMHO is the bottom end of the ducted heater market - its installed in the ceiling and we barely hear it - so a good brand heater will cause no noise issues nowadays (10 years ago it sounded like a jetplane up there) if u go for an outdoor unit - yes two ducts (supply and return air) would have to be run up into the roofline outdoors, be weatherproofed and very well insulated - not worth it! cheres Dynamic Heating & Cooling - http://www.DIYheating.com.au DIY Ducted Heating & Cooling Systems DIRECT to the public Re: Ceiling Inlet for Ducted Heating? 3Mar 14, 2008 7:25 am Thanks MarkHDC
About how deep is the internal inlet? ie how much space would I loose in a built in cupboard if I put the inlet in there? Thanks for the info re Brivis - I was leaning that way, but have heard that their after sales services is not as good as the Braemer. Is there any specific reason you prefer the Brivis over the Braemer? Also - one last question Should the ducts in the ceiling also be insulated? So good to get advice from someone who isn't trying to sell you something.... Re: Ceiling Inlet for Ducted Heating? 4Mar 14, 2008 12:55 pm it was interesting reading your comments mark and your website is really useful. just wondering if the return ducts for reverse cycle ducted a/c should also be in the wall or are they o.k in the ceiling (ie; is it different for reverse cycle versus gas).
thanks helen Re: Ceiling Inlet for Ducted Heating? 5Mar 19, 2008 4:47 am the intlet grille should only be about 50mm deep normally, some are only 20mm deep - others up to 90mm.
With the backup service I believe that brivis is much quicker and more reliable - braemar do not do their own breakdown repairs - they pass the work on to other companies to do on their behalf. With brivis they do any breakdown repairs themselves - a little tip here, if u get the unit serviced by brivis every year (and gas ducted heaters should be serviced yearly) you go to the top of their breakdown list. For example you've been getting it serviced 5 years and it breaks down they will put you at the top of the list compared to the person that has had it 5 years and done nothing with it. All flexible duct should and must be insulated !!!! Return air, supply air doesn't matter - all insulated to R1.0 nowadays for new systems - thats the PIC regulations. (exception to using uninsulated duct is for exhaust / ventilation systems) and to answer Helens question at the sametime - reverse cycle systems should also have the return air in the wall at ground level where possible. Cooling from the ceiling will work whether the grille is high or low, but heating works much better if the grille is low. Glad to be of some help! Dynamic Heating & Cooling - http://www.DIYheating.com.au DIY Ducted Heating & Cooling Systems DIRECT to the public Re: Ceiling Inlet for Ducted Heating? 6Mar 19, 2008 6:36 am thanks Mark! how would you say that daiken, mitsubishi and panasonic compare for ducted r/c airconditioning units (inverter). I know that Daiken is thought to be the rolls royce but how do the others compare. we have been quoted $3000 more for the daiken versus the panasonic and the mitsubishi unit was only abut $1500 less than the Daiken....
thanks, helen Re: Ceiling Inlet for Ducted Heating? 7Mar 19, 2008 6:44 am daikin are the best - if you are going to be in the place for 5+ years - worthwhile investment in my opinion... very quiet and made very very well... if you are there for less than 5 years the other 2 are ok - panasonic probably the last choice if it was me... Dynamic Heating & Cooling - http://www.DIYheating.com.au DIY Ducted Heating & Cooling Systems DIRECT to the public Re: Ceiling Inlet for Ducted Heating? 9Mar 19, 2008 7:16 am cheap rubbish - in this industry you GET exactly what you PAY for... Dynamic Heating & Cooling - http://www.DIYheating.com.au DIY Ducted Heating & Cooling Systems DIRECT to the public Re: Ceiling Inlet for Ducted Heating? 11Mar 30, 2008 12:12 pm mark, what about Actron Air. How do they measure up to Daiken? A rep was trying to persuade me with the 'digital Actron Air system'.
cheers Helen Re: Ceiling Inlet for Ducted Heating? 12May 30, 2008 11:13 pm ActronAir units are a fantastic unit i have been installing plenty of them with no problems and the top model has a digital scroll units are better than a inverter and cheaper to run beats an daikin inverter pants down Hi all, sorting out the ducted air con for a 350sqm double story house. Does this placement sound reasonable to you? Also, I plan to have 6 zones I think. Living room… 0 0 Hi all, sorting out the ducted air con for a 350sqm double story house. I think i plan to have 6 zones I think. Living room (mainly for entertainment so not used often),… 0 0 |