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 Is water heater safe to use?

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imoogi99
post Jul 27 2016, 09:16 AM

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http://www.nst.com.my/news/2016/07/160854/...e-taking-shower

From the picture, the water heater is from the tank and not the instance type.
imoogi99
post Jan 7 2017, 11:26 PM

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QUOTE(Dwango @ Sep 12 2016, 12:08 PM)
Okay. Don't know what is RCD though. Although the water heater comes with built-in RCD, there is a need to install an additional RCD so that the risk of being electrocuted by the water heater will be minimized to zero? Looks like additional cost to get the electrician to work on this apart from the additional cost in the RCD and the hacking of walls and stuff. So troublesome.
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As far as I know, all instance water heater comes with ELCB. Even the Alpha 18i smart water heaters comes with ELCB. This is what is told by the supplier. So installing and RCD does help. As explained by Richard above, RCD and ELCB works differently.
imoogi99
post Feb 9 2017, 10:35 PM

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http://www.nst.com.my/news/2017/02/211009/...capes-unscathed

The damage is very bad. Luckily no one in the bathroom. Guess the old ways of boiling hot water in the kettle to get the hot water for bathing still the safest.
imoogi99
post Feb 9 2017, 10:52 PM

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http://www.bharian.com.my/node/246194

Another view of the damage.
imoogi99
post Feb 9 2017, 11:14 PM

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QUOTE(Richard @ Feb 9 2017, 11:03 PM)
The pressure release valve should have prevented the explosion..

This is why this forum is so important to disseminate information to make homeowners aware of the risk of badly maintained equipment in their homes..

Functional aesthetics comes with a cost..
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Beside the pressure release valve, I believe the thermal cut off is not working either. Had the thermal cut off is working, the water will not be heated and cause the build up of the pressure.
imoogi99
post Feb 16 2017, 05:21 PM

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QUOTE(ozak @ Feb 16 2017, 09:09 AM)
The DB already have a rccb. Why install another 1 that so near?

The extra rccb for heater is mean to install as near as possible to the heater side.
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Normally the DB rccb is at 30mA and not the 10mA type. So the extra RCCB for heater should be installed next to the heater switch? If this is the case, then it will need a mini DB box for this kind of RCCB.
imoogi99
post Feb 16 2017, 11:52 PM

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http://www.rinnai.com.my/product/category/9/64

Is this Rinnai brand of water heater is the only instance water heater that comes with RCD? Even the popular brand like Alpha are having ELCB only.

http://www.alpha-electric.com/showroom_smart-series_18i.html

Any technical guys can confirm this?
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