hi guys, how much it gonna cost for doing extra air-cond point (include all the copper piping, Wiring from DB box & cement patch) in a small condo ?
Aircon Discussion V3, Home Appliance
Aircon Discussion V3, Home Appliance
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Apr 15 2019, 04:00 PM
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#1
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1,775 posts Joined: Dec 2008 From: In The HELL FIRE |
hi guys, how much it gonna cost for doing extra air-cond point (include all the copper piping, Wiring from DB box & cement patch) in a small condo ?
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Dec 28 2020, 04:40 PM
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#2
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anyone using multi split compressor ?
can i choose different indoor model for a multi split ? |
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Jan 24 2021, 08:36 PM
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#3
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anyone here tried panasonic premium ?
can just turn on the normal fan and nanoe just for air purification to replace the air filter ? |
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Mar 23 2021, 10:58 AM
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#4
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installing 3 x panasonic 1HP aircond for 800sqft apartment.
1) master bed room and Living Room (Piping and Power point read, but no cooper pipe) 2) Bedroom 2 ( No Piping No Power point) i got quotation RM2,500 just for installation, is the price reasonable ? |
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Oct 1 2021, 05:37 PM
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#5
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how do we know if the aircond nanoe-g is still working well ? cant see with eyes
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Oct 3 2021, 06:31 PM
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#6
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hi guys,
for 1HP inverter air cond, when connecting indoor to outdoor unit, what wire should we use ? should use 3 or 4 cores? i checked a lot of argument that earth wire for outdoor unit is unnecessary 70/0076 x3 70/0076 x4 70/0193 x4 |
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Oct 4 2021, 03:37 PM
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#7
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Nov 1 2021, 06:55 PM
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#8
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hi all, today i open the panasonic aircond installation manual, it didn't mention anything about the wires specification (2.5mm) for the power source from DB, but it did mentioned about IDU to ODU is only required 4C x 1.5mm for 1HP to 1.5HP.
so in this case we can use 1.5mm for IDU to ODU ? |
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Nov 6 2021, 01:09 PM
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#9
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QUOTE(ceo684 @ Nov 1 2021, 08:28 PM) The bolded one is the wire spec. how come we have been talking about 2.5mm for all wiring, but when i check installation manual is 1.5mm ?U can use 4C 1.5mm Fajar https://shopee.com.my/product/76323881/5357094772 Or 4x stiff wire Mega Kabel 1.5mm https://shopee.com.my/product/253521068/9659166838 Cost wise about the same but flexicord 1.5mm (the Fajar one) u have double layer insulation. Mega one is single layer so u need to protect with another layer of flexi conduit. |
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Nov 6 2021, 02:31 PM
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#10
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QUOTE(stormer.lyn @ Nov 6 2021, 02:29 PM) You are correct, most of the installation manuals from the manufacturer for air conditioner units specify a minimum of 1.5 mm² wire between IDU and ODU for about 2 HP units or below is it because from DB 2.5mm is required to supply the power for both IDU and ODU , while the 1.5mm wires between IDU and ODU is meant for ODU and signal only ? so |
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Nov 8 2021, 03:18 PM
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#11
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QUOTE(stormer.lyn @ Nov 6 2021, 02:53 PM) The power from DB to air cond is wired as a socket point, so the wires will be 2.5 mm², and the MCB will be 20A (I prefer to use 16A) hmmm, so for my 1HP aircond, from DB to Socket is currently 2.5mm. But my IDU to ODU is 1.5mm , is that fine if the length is 15meter long ? if 100% copper we can ignore the distance because the resistance is very low ?The IDU and ODU has both power (for the compressor) and signal if you are using inverter air cond (1 extra wire, normal air cond only 3 wires), and like you said, manufacturers specify 1.5 mm² wires for them. Edit to add: This is just the first nameplate of an air cond that I found as demonstration only It is a total of ~2500 Watt, or ~3 HP. The rated current is 11.2 Amps. 1.5 mm² wire can withstand 14 Amps (conditions apply). So, in theory, you can wire up your 1.5 HP air cond from the DB with 1.5 mm² wire and still be safe. But 2.5 mm² is used. It is similar to water heaters. 2.5 mm² wire can withstand 20 A (again, conditions apply) but Suruhanjaya Tenaga now requires 4 mm² to be used for all water heaters. I would say it is not a technical reason, but rather an administrative one. ST sets the rules from the DB to the air cond unit, but not from the IDU to the ODU (the manufacturer does that) This post has been edited by Pain4UrsinZ: Nov 8 2021, 03:34 PM |
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Nov 20 2021, 11:51 PM
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#12
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Nov 21 2021, 02:33 PM
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#13
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found more ugly thing as i check the work by myself. previous contractor connect the 2.5mm wire like this, this is direct from DB for aircond. must redo whole wiring ? can just connect with reliable connector ? any recommendation ? previous contractor hack till the rebar when there is a ready sleeve beside the drain pipe. i see the rebar a bit rusty and itself originally no coating. how to fix this ? can simply just apply cement on it ? |
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Dec 18 2021, 06:30 PM
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#14
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QUOTE(ceo684 @ Dec 15 2021, 09:59 PM) There is no difference in inverter or non inverter piping. Idk where this folklore came from. Acson and daikin pancake also 0.6mm onlyU can get a vernier caliper or cheap digital caliper to check pipe thickness. 0.5mm fake pipe better throw 0.6mm is elcheapo borderline and not good for R32 long term. 0.7mm is much better for R32. Easily available in Acson/Daikin pancake. 0.8mm is the Japanese standard but in MY getting 0.8 price is out of this world |
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Apr 18 2022, 08:25 PM
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#15
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hi guys, nowadays how much per feet for 1HP aircond installation ? i remember early last year was RM18/feet. how about now?
This post has been edited by Pain4UrsinZ: Apr 18 2022, 08:25 PM |
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Jul 24 2022, 05:53 PM
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#16
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Jul 27 2022, 06:35 PM
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#17
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anyone know how long should we replace the copper pipe and the insulation?
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