Don't have to on / off, it will switch on automatically Every time you on the water heater. It apply for all build in pump.

The older Centon can adjust pump speed, or turn off the pump it not required. is just a manual knob.

sifu sifu here,

after almost finish wet works only i realised my contractor did not provide straight water from meter to the kitchen and ground floor bath. from meter all my water go to water tank and distribute out.

will i have problem with pressure ? do u advise to put all water heater with pumps?
or install groundfos pump?

For a double storey house, the ground floor toilet water heater no need to use pump also can?
The pressure from tangki is enuff to pressurized ground floor water heater?

Do some simple testing. Put a hose on the tap. Raise the hose up 2 meter with a stick. Open the tap and see the water flow out good enough.

Looking for water heater with rainshower... Visited homedec and saw few brands... Alpha, Deka, Rinnai, Joven, Cornell.... Any recommendation?

joven got new model, can try.

which company included installation for heater purchase?

Is Centon a good brand?

most electrical shop got outsource for people to do.

Joven & Rubine also has new models for rain shower with water heater.
Rubine has a new sleek design...Joven has always been a reliable brand..the choice is yours.
Actually u guys can consider getting one without rain shower then add on other rainshower set c/w handshower
the quality is much better than those provided by the instant water heater set.
Price is only slightly more..but you can get better quality & bigger shower head.
Just my suggestion.

Thanks for the suggestion. Not a bad idea actually... Actually all those brands that I mentioned, also comes with rainshower model but Rinnai has the best looking rainshower head. Some rainshower just looks very flimsy and plasticky...

May I know if we purchase 3 unit of water heater plus 2 unit of fan, will the installer charge installation fee per item or one price for all 5 item?

Installer usually will charge per item. But you can ask for more discounts or lumpsum since they come in one trip.

Installer will usually charge per item and also depends on the complexity of your setup...example no existing power points or piping..
But definitely can ask for discount since its only 1 trip as bro Eng_Tat says

i also asking same question..

after drop a visit to electrical shop, charges as below:-

water heater installation - RM70, adding power point- RM60

fan installation with existing hook- RM45, without existing hook- RM80

Price reasonable everyone?

Price above is per item price ya

If water pipes are there already(mine are flexible type), installation can nego to rm50. Just put 3 wires in, hack 4 small holes for screws, secure the heater and close shop
Wiring the water heater is reasonable, if they tap the wire from the distribution box. If they tap from nearest plug point, use a 1.5l 100plus bottle and poke their ars
rm80-100 for installing a fan without hook are the market price

Joven water storage, 2 days used KO liao

Complain joven monday, now wednesday still no body call me !!!!!

This post has been edited by samngcheesan: May 7 2014, 10:41 AM

but can it be tap to nearest point? if my master bath room far away from DB, then need travel a long long cable?

You can, but make sure it is from the light point.
As lights are not that power hungry
But you have to know by testing the fuse on the distribution box. If original already 1 fuse serve the whole room, then it will be quite risky.