oldgit

Erland Haarland's hair looks like a 'syrup'.

10 minutes ago, Keeps said:

Some absolute crackers here. David Moyes (West Ham manager) has certainly improved with age.

 

 

 

No Ralph Coates? Unbelievable.

21 hours ago, Jockstar said:

Anyone keen to take over?

Not me Jock. I'm absolutely useless on computer technology.

A bit late on parade but I'm in this season.

Try the main city police station. Take your passport along as proof of identity and they'll sign and stamp the form for nothing.

Lionel Messi, 35 year old tourism ambassador for Saudi Arabia, defied his age to put in a five star performance for them against Argentina yesterday.

I'm game for another stab at it this season.

Sucker for punishment. I'm in mate.

While Ted Drake dragged a stale Chelsea team to greater heights by introducing Chelsea youth players, Greavsie being one of them, the Doc went even further and brought a brand of exhilirating, exciting football with more young players and astute signings. Pity the Chelsea board weren't on the same wavelength. Tommy Doc will always be revered as an exceptional manager for Chelsea.

On 9/1/2020 at 8:22 AM, wilai said:

•  
• Global Moderators
•  3,534
• 6,822 posts
• Gender:Male

•  

Hi all

 

Just setting up the coming season's competition. I assume all last year's combatants will be entering. Any new players who may be interested, please send me a PM or add your names to this thread.

 

Cheers

 

Wilai

I'm in again mate.

1 hour ago, keithsimmonds said:

As refered to by Messrs Chellini and Ivanovich ???

Blimey! I never knew he did Chellini as well!

1 hour ago, sometimewoodworker said:

That price will not include the outdoor unit. 
 

While I don’t read Thai the chart you posted lists a minimum of 44dB? The Mitsubishi is a minimum of 38dB if so the sound level would be about ¹/₄ of the Saijo so I don’t know where your figures are coming from.

Phew! That would be very expensive for just doing the indoor unit. The prices they usually quote are for the supply, installation and commissioning of the complete installation.

23 minutes ago, mipa123 said:

I'm thinking about replacing my indoor unit with a cassette one, in the hope it's compatible with the outdoor unit.. need feedback from manufacturer to figure that out.

 

@sometimewoodworker what are the dba specs of your cassette, just to have a comparison?

 

Most calculation tools suggest at least 40-46.000 btu for my space, since it's west side and one side of the room is fully glass panels.

 

So I would probably go with the 44.000 cassette sanjio denki offers, which is 44dba - which is already 5 dba less than the slim duct one (if properly installed) ..

and I've learned 3 dba = double the noise

Just looked at the Mitsubishi PLY-SP42EA (42,000BTU's/hr) cassette indoor unit and they require a minimum depth of 298mm inside the false ceiling space.

1 hour ago, mipa123 said:

first thanks to everybody for the response, appreciate it a lot.

 

I've switched to "Decibel X" which is supposed to be the most accurate db meter app..
bedroom AC low: 45 dBA

bedroom AC high: 50 dBA

livingroom AC low: 56 dBA

livingroom AC high: 64 dBA

 

still not sure of course if accurate, but sounds more reasonable. I don't wanna buy an dba meter just for the test.

 

If I compare that to the specification @oldgit found on the Saijo Denki website it's quite more than the 49 dBA (I guess on low?), which would confirm my subjective opinion that "it's way too loud". 

@oldgit do you have a link for me? I wasn't habe to find the exact HVAC model on their webpage.

 

My main concern was, that I don't want to have the contractor rip the plasterboard ceiling open (and of course charge for it) if I'm not sure it will improve anything.. and so far everything I can try would require exactly that. Buf if you guys agree that this installation is not proper,  I would move forward doing that.

 

Based on my google research I thought about replacing the wooden box with a much bigger fiberglass duct/elbow, made of fiberglass duct board. It's easy to cut it myself without special equipment requirement, is light weight and reduces vibration and noise. So win-win .. only problem so far is that I can't find any fiberglass duct board supplier in Thailand. Is there a reason for that? Bad idea?

 

 

The current inlet grill is 170x60cm and the outlet is 120x15cm - so the site of the outlet would be fine for the amount of airflow? @oldgit

 

I also thought about having the identical inlet grille as outlet grille installed by the contractor, so that they cut the ceiling open and install an identical grille thru which I can install my new fiberglass duct myself. I've no experience with working with plasterboard (especial ceilings) at all, so having two grill gates I can open would it make much easier for me to try different solutions and should provide plenty of airflow for the outlet? 

 

My initial plan was to have the AC outlet extended by the contractor straight to the recessed living room ceiling, but unfortunately there is a huge concrete beam in the way (which you can see on the picture of the "wooden box"). There are only 4-5 cm between beam and ceiling, so not really space for air flow... and would have been probably even much louder. My contractor quoted 22.200b for that.

 

correct.. they pull the air from the whole ceiling and not via the inlet grill. I've already on my todo to fix that too. 

 

Thanks,

Michael

Hello Michael.

Plenty of points to go through so here goes!

1) Go to the Saijo Denki.co.th website. Click on 'product'. Click on 'duct type air. Click on 'turbo'. Scroll down to 'Duct low static R-410A' specifications. Your unit is the 44,000 BTU/hr. one. The model nos. for the indoor and outdoor unit are at the bottom.

2) Usually, the 49dBA reading is at high speed one metre away from the unit. My opinion is that the unit isn't your problem, it's the ductwork install from the unit to the grille.

3) Perfectly understandable that you don't want to start tearing the plasterboard ceiling about. Did the contractor suggest that an access panel be installed in the ceiling, for maintenance of the unit i.e cleaning the filter? That would give you ideal access to the unit to carry out any alterations.

4) The worry I have with fiberglass board is that, in time, it starts to break up and bits get into the airstream. If you want to go down that road though, line the inside of the duct with something like aluminium foil sheeting, the edges sealed and taped. I much prefer good old fashioned galvanized sheet steel ducting (rectangular or circular) though!

5) The grille sizes are fine for both inlet and outlets but, after altering the duct (make sure it's as straight as possible to the outlet grille with no sharp right angled bends) you still think it's noisy, change the outlet grille to 1200mm x 200mm. You'll get the same airflow into the office but the airflow speed will decrease and the 'throw' will be less. I notice what looks like your desk directly below the unit. Any chance of moving it away a couple of feet to alleviate the problem?

I've looked up the air volume for that unit on the Saijo Denki website and it's 1450 cubic feet per minute at a noise level of 49 dBA at the unit outlet. That's quite a normal noise rating so I think your problem is the ductwork installation from the unit outlet which is causing the noise. 1450 c,f,m would require a duct size of say 1 metre x 150 mm but the supply air ceiling grille size would have to be approx. 1 metre long x 200mm. This is because the grille has a free area of 70%. The 90 degree wooden bend directly after the unit outlet you describe is a bit worrying as there should be plenum chamber installed on to the fan coil unit with a horizontal duct or ducts leading from the chamber to the supply air grille.

One other point, the intake ceiling grille seems OK in size but is the unit ducted to this grille or is it just drawing air from the ceiling void? The reason is that air inside the ceiling is hotter than the air from your office, so your unit would work much harder to lower the temperature. 

2 hours ago, deej said:

Now a change of heart????

 

And a change of name for the wombat?

4 hours ago, deej said:

Perhaps so ^^^^

 surely credit should be given to Brenda and Leicester. for a outstanding 

9 nil away win. and looking  Geniune Top Four contenders.

But  as usual . the minority are very hard to please????

 

Huge credit to Leicester ofcourse for ruthlessly exposing a team with 6 or 7 snails. You can get away with a couple in the team, but that many is just asking to be walloped. Before the game, if I was Brendon Rodgers and saw that opposition team sheet, I would have been dancing in the streets.

2 hours ago, champers said:

9-0. What a stunning performance. Rodgers looking like a genius.

Leicester were up against the slowest defence in the Premier League and that midfield of Hojbjerg, Ward-Prowse (the most overrated player to have stepped on grass) and Romeu could have been bypassed by me and my old grandmother. No room for paceless logs of wood in this League nowadays. Southampton have worked hard in their matches up to now but, that can only work up to a point before fatigue and lack of pace is exposed.

50 minutes ago, 3 minus 2 said:

He died in 2018

Your not thick, are you treacle? I'll have a stab at Bill Foulkes.

11 hours ago, BangrakBob said:

Apparently he demands his Spurs teammates to call him "H" ?

Is he one of the Men in Black then?

I see Harry Kane is going out on a limb by saying that "England can win the World Cup"....."I believe we can win it - anyone can (mind how you go mate, people might think you're some sort of judge). "I cannot sit here and say we cannot win it because we could do." Replace the "can" and "could" with "will" and "would" and this statement might have made me sit up and take notice. But no, just the usual hackneyed b****cks from the mouths of idiots as fodder to the masses. I'm surprised there wasn't a "I hope so" somewhere in the piece.

This was before the Premier league but Derek Smethurst, who was South African and was the first foreign born player to win a European championship in England, played a few games for Chelsea first team in the early '70's, before being transferred to Millwall.

30 minutes ago, wilai said:

No. The same sports as Sir Viv.

Andrew Flintoff?

4 hours ago, StevieH said:

No chance of me ever getting that. I was a 'Swivel eyed Smith, the goalie's nightmare' man.