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--- mywiki:info:aircon [2015/04/11 09:29] – shaoguoh
+++ mywiki:info:aircon [2019/09/15 18:55] (current) – external edit 127.0.0.1
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  Air Conditioning Singapore
-| Reference | [[http://homerepair.about.com/od/heatingcoolingrepair/a/Types-Of-Home-Air-Conditioning-Systems-And-How-They-Work.htm | Types of Home Air Conditioning Systems ]] |
+| Reference | [[http://homerepair.about.com/od/heatingcoolingrepair/a/Types-Of-Home-Air-Conditioning-Systems-And-How-They-Work.htm | Types of Home Air Conditioning Systems ]] | 【【http://residentialairconsg.blogspot.sg/2011/11/what-you-need-to-know-when-installing.html | Aircon Knowledge]] |
 Singapore.
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 Class 1 & Class O = Fire Propagation Test Standards for insulation. In simple terms, the insulation inability to burn.
-Grade = Actually it should be Gauge. It is an industrial term to describe thickness of metal. In our case, thickness of the copper pipe. 'Grade 23' means 0.61mm thick.
+Grade = Actually it should be Gauge. It is an industrial term to describe thickness of metal. In our case, thickness of the copper pipe. Grade 22 is 0.71mm, Grade 23 is 0.61mm and Grade 24 is 0.56mm. This has nothing to do with the chemical content. But generally, a thicker copper is able withstand a higher operating pressure. Surely the manufacturing process also plays a very important part.
 Insulation = the foam or rubberly 'layer' covering the copper pipe. Its function is to prevent heat gain.
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 R410A refrigerant is CFC free (environmental friendly) and has a operating gas pressure of 1.6 times higher than R22 refrigerant. R410A also has a higher condensation rate due to its slightly higher cooling of the refrigerant as compared to R22. On average, 30% of energy can be saved by getting an inverter airconditoner as compared to non-inverter airconditioner provided the airconditioner is being serviced regularly and cooling capacity of the fancoil is not undersize. R22 refrigerant is used in Non-inverter aircon and has a lower operating gas pressure
+====== BTU ======
+BTU is known as british thermal units and is a unit of measurement of thermal energy
+Conversion from Kw to BTU. 1 kW= 3412 BTUs.
+HP stands for Horse power. 1 HP is the power input equivalent to 746 W and can produce approximately 9000 BTUs
+Typically fancoil units are available in 9000 BTUs (2.5 kW) 1 HP, 12000 BTUs (3.5kW) 1.5 HP, 18000 BTUs (5kW) 2 HP and 24000 BTUs (7kW) 2.5 HP. 1 HP = 746 w, 230 V at 50 Hz
+To find out what is the sizing of the aircon required for the area you can take area size in square feet multiply by 65 or area size in square meters multiply by 650.
+Example 140 square feet area size will require 140 x 65 =9100 BTUs
+In this case you can select  9000 BTUs for the room as there will be furniture like built in cabinet or wardrobe occupying the space.
+| Flat Type | Rooms BTUs | Living Room/Hall BTUs |
+| 3-room | 9000 x 2 | 12000  |
+| 4-room | 9000 x 3 | 18000 |
+| 5-room | 12000 for Master bedroom; 9000 for the rest of the rooms  | 24000 |
+| Executive Apartment/Maisonette | 12000 for Master bedroom 9000 for the rest of the rooms | 24000 |
+====== How many condensers can one HDB flat install? ======
+It depends on the electrical loading of the flat. Flats with 40 Amps main switch and flats upgraded
+under Main Upgrading Programme (MUP)
 ====== 空调分类 ======
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 . Panasonic: This reputed company offers a wide array of aircon for all your needs. This brand implements some cool features like Econavi and Autocomfort, where almost anything can be set including the horizontal louvers that provide you the freedom to set what best suits your comfort level.
+MITSUBISHI SYS 3 - INVERTER
+    MXY3A28VA
+XMSYGE10VA
+XMSYGE18VA
+Gaincity: S$3,059.00
+http://www.gaincity.com/product/mitsubishi-sys-3-inverter-1
+Curts: 3499/3589