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.

Yes, I believe the protection works complementary to each other.. A faulty thermal cut out and pressure safety release in the boiler..

Learn something new to live another day .. cheers..

For normal household people, there wouldn't know about this. And don't think the manufacturing will tell you when need maintenance.

Till the unit spoil.

Most likely (guessing) the storage heater is some "chap palang" brand. A good brand will have minimal 2 failsafe features inside.

And next is user need to practice switch off after use. This is passive safety.

So far have you check that safety device? Is it in working condition.

another issue is normal those heater installed on top of the ceiling. How we able to check and view the indicator of the tank?

This post has been edited by amenlo9: Feb 10 2017, 04:43 PM

No need la.

Nobody will see it.

Just estimate the time when you switch ON.

For my house, i do a simple check, just switch on 30mins, if meter still running, is time to inspect. So far ok.. touch wood

I would like to purchase RCCB for my instant water heater shower use.
What kind of RCCB specification do I required to purchase?
The instant water heater shower that I have now:

Panasonic DH-3NDP1MS, 3.6kW, DC Jet Pump.

RCCB specification:
1) 10mA / 30mA?
2) Type A / Type AC?

Hope you find this useful as posted by one of the forumer in this thread

mine so far so good , i think its safe , hopefully

Bought the exact Hager model.
Can't afford Type A RCCB from Schneider.

This one is quite costly

How you intend to install it?

This type is din rail, db box type.

Yes, planned to install RCCB in DB for water heater.

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.

In Malaysia, this type of unit is available by some electrician.

I guess it is the cheapest way.

As long as it work, it is okay. Safety 1st.

There is few way to make it nice. All is in the back post. But of course price will be expensive a bit.

I prefer the nicer way.

In US, those appliances using high power like heater, hair dryer, aircon etc, the 2pin plug is equip with the rccd. So the appliances that they buy have the rccd built into the plug. This is a good idea to protect you and the device from fire.

This is a aircon plug.

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.

It should be install next to the heater plug or direct point.

You can use sharethebest picture way or nicer way at the back of the post.