To add on, it is a good suggestion to have better heat at high pressure site, but will require a new cable run as the default wiring spec from developer is usually only 2.5mm.
>4800W need to upgrade the cable to min 4mm (or better, 6mm) to support the amps accordingly;
5400W still can be protected with 25A 10mA RCD

How to decide between Joven and Centon 50L storage tank heaters?
Centon is cheaper by about RM90.

I suppose function wise they are alright, concern is on reliability and service

mine without pump...

no idea how much the pressure my pump pumping... never measure...
however will close the inlet valve and only open it during shower.

at the end, any water heater can resist high pressure?

i am looking at hydro one and Seers tank water heater with their own patented heating element. any other similar brand i should take a look?

Common brands in the market for storage heater :

Joven, Elton, Centon, Seers, Hydro One, Pecol, Beebest, Midea, Meru, Alpha ...

Points you need to take note are -

- your incoming water pressure
- what size of the storage tank
- power rating of the heater
- heating time to reach 60 deg C

Happy exploring 

Oh I see, got it, any professional sifu( that is not so costly to install 2 units) to recommend for the installation? The current socket is just normal 13A placed on top, so need to do modifications like mentioned above

Any water heater have a powerful pump? Because I've built in rain shower, scare it the pump not powerful enough no syok.. lol

Hi all,

Anyone can guide me on instant water heater pump pls.

Compared Joven and Centon as recommended, I'm currently using Joven 880P with AC double ball bearing booster pump. Water pressure is still.. alright, but it is far from satisfaction. Apparently this double ball bearing booster pump can provide 4x stronger water pressure.

So I looked at
Joven SB11p - claiming 4x stronger water pressure
Centon Grande - claiming 4.5x strong water pressure

My concern is, what if I buy only to find that both models give me the same level of water pressure? Can anyone giv suggestions how to get stronger water pressure pls?

p/s: Not looking to install separate water pump after tangki, afraid that old pipes can't handle the pressure.

*apologize if I'm spamming (posted on 3 water heater LY forums), but quite urgent as I'm gonna start reno and need to decide if I'll ditch heater storage tank and go with instant heater (save money on hot water piping, mixer)

Hi Sifus, need advice please. I have 5 bathrooms upstairs (4 daily use bathroom for parents and children; + 1 guest bathroom). In terms of usage, there’s a high possibility that at least 2-3 persons will bath at the same time and possibly up to 4 pax at the same time

Can I get advise on 3 questions : (assuming no rain shower in any bathrooms)

1. I’m planning to get Joven storage water heater. Would it be better to get :
A) 91L to supply all 4+1 bathrooms
(am concerned that 91L would take too long to heat up and in the event of “malfunction” all bathrooms no hot water and costly to replace vs Option B)

OR

B) 68L to 3 daily usage bathrooms (rooms are next to each other) + 25 or 35L to 2 bathrooms (daily usage bathroom + guest bathroom)

2. Whichever the option, is there anything in particular I need look into in terms of wiring/switches?
Sorry if it’s a noob question, Is it possible to have 5 way switches to control one heater tank (option A – 91L) or 3+2way switches to control 2 tanks (option B 68L + 35L). Ie, each room has their own heater switch and turns on the heater when they need to shower. Any issues if 2 persons turns on the heater switch to the same heater tank?

3. Based on the preferred options, is there a difference to the number and HP of water pumps I need, or I just need 1 as usual, at the main water inlet right after the POE filter? What HP water pump should I get? (I’m presuming I’ll need water pump as I’m installing a storage heater tank, right?)
Thank you very much in advance for all advice

Cheers!

Vern

owh but i did see Alpha and Deka has gauge controller for motor

both are rain showers

hmm

has anyone used the 2 brands above ?

There are plenty of brands out there for instant water heaters with good pump.
I have been using non-famous Sharp brand for almost 8 years without any issues. Most brands are with warranty, just go do some survey.
Get the one that suits your need and budget.

so far in malaysia market only Sharp and Rheem using RCD , while others using ELB ?

https://www.centon.my/product/neptune-series/

All,
Just for your information, the whole of klang valley there's only one certified installer recognized by Centon. And he is charging very expensive charges - RM450 for installation, then plus RM300 for the plaster ceiling cut and restore (he somewhat insist on using his own guy for the plaster ceiling).

The feedback from the centon/onsen was the water heater warranty would be voided if the heater was installed incorrectly, so if you are not using their recommended installer and if anything goes wrong then they can just say "oh it was not installed correctly" and void the warranty.

thank you very much for this share !

this brand good? first time hearing it.. care to share your experience?

Hi all, would just like to check if anyone have encountered this issue before. I have Panasonic DH-3NP2MS water heater installed in my new home. Yesterday when I troed to use the water heater, the water came out intermittently and gradually decreases until there is no water, and the pump sounds extremely noisy.

I have checked for leaks in my piping, but couldnt find any. Appreciate if anyone can assist in troubleshooting the issue.

Hey sifus, checking if it’s reasonable at all to install water heater with pump if I already have a grundfos water pump?

Reason is I really wanted to get a strong rain shower going on, but not sure if it makes sense to install two pumps in series like this haha

Appreciate any advice!

The storage heater will be placed above the ceiling of the shower. Where it will be plugged in using the standard WH plug which will also be above the ceiling. There is the main swit h outside the bathroom.

If 2.5mm is not following ST regulation, then Centon are at fault as they use 2.5mm inside their unit. No point fitting 4mm wire to a 2.5mm wire.

Personally I think it is OK to use the 3 pin plug as the unit is rated at 2500w so a 13amp plug should surfice.

The connector ensure a neat join safely.

If you think you can use a 13A socket, or don't want to use the Centon connector (I don't, I make direct connections), or use 2.5 mm² cable, then you can but it is entirely your responsibility. People here are posting about what you should do following the rules, but you seem to want justification on why you shouldn't. Sorry, can't do that. Wires internal to the WH/SH does not need to conform to ST wiring rules, and ceo684's post repeated below explains why.

I used joven 30ip... Pls avoid that at all cost.. not sure why but both of my unit water is not hot enough even i turn the Temp all the way to maximum...

Hi all, would like to ask for advice. I am looking for Rainshower instant water heaters with DC pumps. Planning to get 2 sets, and my budget is around RM 450/set. Can sifu recommend which brand & model to go for?
Prefer brands such as Pana or Joven

Hi guys. Have trouble deciding between centon 70l vs joven 68l vs midea 50l for water storage heater. Any recommendation which to go.

Hey guys. I have a joven water storage heater 68L installed in ceiling. Recently it was leaking and called plumber to rectify. Plumber said it was the isolation barrier (IB) leaking and for a temporary measure he directly inserted pipe in w/o the barrier.

Plumber claimed he had a number of cases where IB leaking.

From what i understand the IB is to protect from electricity. So since my item still under warranty i called Joven to have a look and they said to change the IB. Their own technician also said no issue if do not use the IB.

My usage pattern is to own heater for 10-15min then off before use. But its nice to have a bit peace of mind knowing the purpose of the IB.

So my question is, if it leaks again, can i just not use the IB? Since it would be a headache having to constantlt change and repair my plaster ceiling...