There's a warning on the water heater stating "caution metallic/chromed hose and conductive control valve shall not be used"


My installer used this hose for the inlet. Looking at it, i think it's chromed hose.



How ever, this hose is in between 2 plastic fittings.



What do you guys think? Is it safe or not? Experts are welcomed to comment

same setup with my heater

can feel the current if accidentally touched

Your concern should be more on the handle hose instead of that pipe hose, as you will be holding it or in touch of the water coming out from that to bath.
So, if there is a power leak,the power can go through from there to your body.

Isn't that dangerous? You're planning to change the hose?

But we can also accidentally touch the inlet hose if there is a short corcuit

Why didn't you use the hoses that came with the product?

the hose to the shower rose should not be metallic. also your heater unit looks to be positioned too low in my opinion.

yes. if you want safe, change all the metallic hose to rubber or plastic one. and even your plug connector is dangerous as it may expose to the water.

I use this PVC shower hose on the water inlet for my water heater.

http://www.johnsonsuisse.com.my/?ch=cat_sh..._20130910183917

That inlet hose is not provided

Yes that hose is plastic. My inlet hose is metallic. Should i change that one to plastic as well?

That hose in the link seems too stiff

not necessary but you should relocate the heater unit higher

if u touch it, nothing happens

but when u accidentally contact with ur skin only can feel the current

if u concerns better replace with plastic flexible hose

Stiff means? too short to reach your water heater?
Or you mean hard to bend?

Hard to bend. If you see how my photos, there will be a lot of bending to connect the inlet to the water heater

Oo ok you've been using this hise for quite sometimes already?

You installer must uninstall and install it higher. Replace those hoses at the same time.

I'm ok with the position. Maybe I'm a small person.

Can you eloborate more on why do you think that it's unnecessary to change to a plastic hose? Don't you think it's dangerous to have a metallic hose at the inlet in the event of short circuit?

I have this hose in my house, they are not that stiff.

wow ur inlet so low, enuf pressure?? is that a filter before inlet? where did u get it?

Enough pressure so far, the water heater is with pump, so no worry.

Yes, the water filter from Taobao.

Filter: https://item.taobao.com/item.htm?spm=a312a...._u=m2lh2ea139e1
Cartridge: https://item.taobao.com/item.htm?spm=a312a...._u=m2lh2ea1a162

nice! my heater with pump also but water pressure still too low (landed)...

Yah seem flexible enough. How much it cost per meter?

The length of the hose is fixed at one size.
I bought from ATKC online store, refer here:
https://www.ewarehouse.atkc.com.my/Johnson-...?search=johnson suisse&limit=100

If you need longer PVC hose, then you have to search for alternative.

Your unit install look low, water will splash on the top of the water heater and may slip in. Did installation instruction put in recommendation height?

yeah for 7 years

if u guys nees flexible hose,

mr. diy selling very cheap

Shower operation you only touch the control lever, heater dial and shower rose. Hence these parts are your only worry of getting electrocuted.

How about accidental contact?

I need to check back the manual. But do you think this height is too low? I feel like it's just nice

What i usually see are the shower head at most reach to the mid point of the water heater unit, while in your case the shower head can go above, and that mean possibility of water from the shower head plash to the unit if it was adjust to the highest point. I usually install mine with the temperature knob and the power on/off are reachable while the top part will be higher and shower head won't reach the top.

Then better pray no electricity leak.

That's about right. As a rough guide, on/off button should be about eye level or above.

How many meter the heater from the floor?

That look too low.

Ask the installer reinstall the heater higher. Than change the inlet to PVC pipe. That solve your both problem. Pipe and height.

Hmm the tiles are drilled already. Changing the position will leave the drilled tiles exposed and it wont look good anymore

Look good or be safe? Or change another unit with longer design.

Must be a girl.

Life doesn't matter, must look pretty 1st.

I suggest either change the existing socket that powers the instant water heater to ShowerTec or here also. I had the brochure from Homefix I believe a while back but it seems that they're on social media more than a regular web page. [Update: Seen it sold for RM40 at TBM]

Not too sure is the outdoor S56 IP66 splashproof socket with a breaker is suitable for use in a bathroom as those are normally used outdoors.

This post has been edited by halcyon27: Sep 25 2017, 11:42 PM

Aside from splash proof socket or IP66 socket, since this is water heater, the bathroom will be very humid during or after shower, can consider install ventilation fan on the upper section of your window.

make sure you have another 10mA trip RCD for that heater ..

just to be safe..

The main problem is not the plug and socket. But the heater is too low and near to the shower head.

Even through the heater have a splash proof casing, I don't think you will comfort with it everytime splash the water on it during bath.

The metal flex hose is advise to change to non conductor material incase electric shock. Current run on surface of the material.

So with that flex hose long tangle down that ugly, why not install the heater higher and change the flex hose to pvc pipe.

That will be look better and safer.

Strongly agree on both issues raised. What's the height for the one installed in most homes? Does the manual suggest a minimum?

I think the manual do have suggest a sefety way of installing. Otherwise somebody sue the manufacturing already.

Here my example when I install the heater myself. The rainshower is higher than the heater definitely. And it abit nearer to the heater. I can't raise anymore the heater since the rainshower nature is higher.

I found out that the wire in the hole even have a rubber gourmet to prevent the water in, but the protection is not enough. I still can see some space between the wire. If the water sip in through the wire and flow into the heater, Kaboom.

So have to seal it with additional sealant. No choice even it ugly. Safety 1st.

Wow, in this model, the manufacturer chose a side entry. Think a better design would be bottom baffled entry or bottom slanted side with the electronic tucked away far at the top. I would prefer safety also.

water heater is definitely too low. all you need access to is the bottom knobs. i would put the knobs height at least at the top of your head level or if possible higher. unless you are really really short.

the bottom of my unit is around 6-6.5ft from the ground. hardly any water splash on it during shower. safety first.

Most of the heater is using side entry. But how they seal it properly will be their design strength.

Ya, bottom or slant down will be better design.

If I'm gonna replace my old heater with a new one (other brands), do I have to drill the screw holes again? Dunno whether heaters got a universal placement for the screw holes.

I don't, because the back cover is just plastic and water heater unit not heavy. I usually just screw over the plastic cover on to the existing holes. So far changed 3 units and work ok. Just make sure you put some silicon after screw to prevent water slip in from the screw. Usually it will not happen if the unit are higher than the shower head. For TS case, very likely it can slip into the unit.

Standard electrical wiring is bottom entry or the wires to make bottom loop down then up into the terminals..

As you have already figured out its to prevent gravity water seepage into the electrical enclosure..

silicon seal the cable entry as per your installation is better..

No need..

Get a timber furring strip (say a 1"x2") and attach the strip using the original holes..

Attach your new heater screw mounts onto the furring strip..

Ya, this is better. But I don't see any heater that have bottom open for wire so far.

Flip around also cannot find the bottom hole.

Another way is use cable glands. But provided the cable is 3core seal.

coming very soon... all water heaters will come pre-wired

Hi, I just happen to see this post. I’ve recently bought a storage heater. Can I use chrome hose for the hand shower ? Thanks!

Hi, just want to ask you guys.

My power point for the instant water heater in my bathroom is something like this. It comes down from the plaster ceiling and has no socket outlet. My question is, if the cables are not long enough to connect to the water heater, what is the safest and most practical way to do the installation?


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Are you sure this is the power cable for your instant water heater? IMO, the cable might for lighting. You can double check with your electrician. If it is for instant water heater, you can get your electrician to extend the cable and put it near to your water heater.

As per the previous reply, this doesn't looks like wiring for the heater.

A heater wiring usually has an MCB or a lighted breaker type switch outside of the bathroom to provide current to the wiring. Please get someone more knowledgeable to check it out.

This post has been edited by kimzee: Oct 17 2018, 02:41 PM

It's ok, got it done already. As mentioned in my post, the water heater wiring just comes from the ceiling with no socket outlet there. Just mentioned it's similar to what's in the picture but the cables are different. So was just wondering what was the best and safest way to do it.

This post has been edited by 8sg9ft: Oct 17 2018, 02:48 PM

Water heater wiring is left hanging from the ceiling in designated toilets. Typical for all housing and residential development. The wiring will be connected to a 13A power switch on the outer wall though. Any electrician or water heater installer will know how to connect and install the water heater accordingly.

This post has been edited by kirakun: Oct 17 2018, 02:55 PM

If you are sure that wiring is for your water heater you can just access the top of the ceiling pull the cable up and route it down the ceiling of the wall where you want the heater installed. If the cable is long enough you do not need a socket. the wiring can just go directly inside the heater.

Just use some putty to fill up the old hole in the ceiling.

This post has been edited by kimzee: Oct 17 2018, 02:57 PM

Chrome or anything conductive should be avoided. If there is short is heater body, the electricity will travel through the hose to your body. Even though the heater is grounded and the power should trip, but you do not want to take unnecessary risk.

Yeah. Just that my bro's apartment has a socket outlet for the water heater to be connected to even though there already is a switch for the water heater outside the bathroom. Anyway, all good. Everything was clarified and fixed accordingly by electrician. No worries.

Direct connect to the terminal block in water heater.

13a switch/socket for water heater is as good as shit

Ma bad, should be 20a not 13a.

Look at the red circle. The end to end are both PVC. They should not conduct electricity because inside the metallic thing is made from rubber. The only thing that could conduct electricity from your pic, is the water itself.

i have the same water filter as ts just installed. Installed it high 6-6.5ft but the shower head cannot reach the floor level. A bit difficult while showering my toddler and dog. How to extend the shower hose from the heater outlet? any extension pipe i can use to connect from the heather outlet and then connect the existing shower hose?

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This post has been edited by pmaxv: Dec 31 2019, 02:23 AM

Lol its a long time ago

My heater already dead

Installed new heater but still not working

Problem with heater switch already short circuit inside

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This post has been edited by pmaxv: Dec 31 2019, 02:23 AM

Hi, sorry for reviving old post
Just got my water heater installed yesterday, and noticed that the contractor is using a stainless steel joint for inlet point

Is it safe? Or better change to PVC?



This post has been edited by kapalterbang_737: Oct 9 2020, 04:58 PM

yes...safe . no worries .

your shower head and cord/hose should be ALL plastic /rubber material. no chrome finish ! .

this heater come with a inbuild elcb ? test to check if the elcb works. ie trips .
if no elcb ... either you return the heater or install a RCBO . cos NOT safe at all.



This post has been edited by Momo33: Oct 9 2020, 11:42 PM

How about this? i'm going to change the angle valve..my current one i think abs chrome angle valve, is it safe to replace it to stainless steel angle valve?


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This picture will tells you why a conductive hose is not recommended. The electrocution comes from the faulty heating element which are in contact with water. A PVC hose is way much safer.

How about this angle valve? can use stainless steel?


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the plastics pvc piping go up to where ?

i guess to the water heater water IN .

yes is OK as risk is low cos you use a plastic tube .


This post has been edited by Momo33: Oct 9 2020, 11:44 PM

the plastic pipe go to water heater inlet. is that ok if i change the angle valve to the stainless steel type?

No problem for the water inlet, since you just change the L angle valve - assume you will keep the white flexihose.

It is the water outlet (to shower head) part that must use non-metallic (plastic hose).

This post has been edited by ceo684: Oct 10 2020, 03:18 AM

yes...no worries .

install this at outlet shower pipe ..can prevent electric shock?


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thank you

thank you