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 Ceiling Cassette vs Wall unit AirCond, whats your opinion on power consumption

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barca96
post Nov 9 2020, 11:15 AM

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QUOTE(mini orchard @ Nov 8 2020, 04:46 PM)
The compressors need to blow away the hot air to an open area and I think the direction is wrong. The compressors fan should face you when you look at it but then you have a problem using the wm when the ac is running.
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sorry what is WM?

the developer actually point their fans towards the balcony as you mentioned but my aircon guy said we wont be able to ist at the balcony then and most of the owners here also point it outwards as per pic. It is partially blocked as there is a sort of grille design.
mini orchard
post Nov 9 2020, 11:38 AM

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QUOTE(barca96 @ Nov 9 2020, 11:15 AM)
sorry what is WM?

the developer actually point their fans towards the balcony as you mentioned but my aircon guy said we wont be able to ist at the balcony then and most of the owners here also point it outwards as per pic. It is partially blocked as there is a sort of grille design.
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Washing machine.

I suggest you show the photo to the manufacturer and ask for their comments. If they say no issues, just let it be.
halcyon27
post Nov 9 2020, 02:44 PM

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QUOTE(barca96 @ Nov 8 2020, 03:16 PM)
thank you very much for your advice.
unfortunately after measuring the compressor area, I won't have enough space for a slightly bigger cassette compressor. There is enough space but only if all 3 compressors are stacked on top of each other without any spacing.

cassette compressor = 875 w x 695 h x 320 d
split compressor 2x = 718 w x 525 h x 255 d

user posted image
user posted image

btw I already have piping in my condo done by the developer, can I change to this higher end piping?
or would it be too much work for the ac guy to change the piping?
i assume the piping will be more leakproof hence worth the extra few hundred investment.

thanks
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There is such a thing as a multi-split system where one large compressor services up to 4 locations depending upon the model. One compressor to one location is typically called single split. What's deployed at each location doesn't matter as long as it's within piping spec. It can be wall mounted in bedrooms and ceiling cassette in living / dining not exceeding total HP of the multi split compressor. These are common esp in SG typically referred to as system 2, 3 or 4 depending upon the number of AC locations.

The wall where the three AC compressor is located should be blowing out into the void with multiple thin pillar grille screening so that there's unrestricted air flow otherwise the compressors will die of heat stress.

This post has been edited by halcyon27: Nov 9 2020, 03:12 PM
barca96
post Nov 9 2020, 07:25 PM

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QUOTE(halcyon27 @ Nov 9 2020, 02:44 PM)
There is such a thing as a multi-split system where one large compressor services up to 4 locations depending upon the model. One compressor to one location is typically called single split. What's deployed at each location doesn't matter as long as it's within piping spec. It can be wall mounted in bedrooms and ceiling cassette in living / dining not exceeding total HP of the multi split compressor. These are common esp in SG typically referred to as system 2, 3 or 4 depending upon the number of AC locations.

The wall where the three AC compressor is located should be blowing out into the void with multiple thin pillar grille screening so that there's unrestricted air flow otherwise the compressors will die of heat stress.
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Hi yes I heard about that but my aircon guy told me not to get it so I didn't. It would've saved me so much space.

QUOTE
The wall where the three AC compressor is located should be blowing out into the void with multiple thin pillar grille screening so that there's unrestricted air flow otherwise the compressors will die of heat stress.


Sorry. Is it correct as it is or it should be turned?
halcyon27
post Nov 9 2020, 08:34 PM

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QUOTE(barca96 @ Nov 9 2020, 07:25 PM)
Sorry. Is it correct as it is or it should be turned?
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If it's blowing outwards it's correct. If it's blowing inwards, it will blow hot air into your balcony area. So where is it pointing?

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