u can just turn off the heater's pump, nth will go wrong

The pump is ard 0.5kW only, if you do not turn on the water, the pump will b in standby mode and would not consume much electricity. Your water heater is 3.6kW while a Grundfos water pump consumes 7times less electricity compared to your instant heater.

Some houses cant hear anything at all while some will have bombing noise. What i can tell u is Grundfos pumps have low noise operation, whether u can hear it or not is depending on how your plumber install it and the structure of your house. If you wan to know more, u can speak to my dad, can learn a lot from him.

hahaha, we will have raya promotion from 23-27 August. One of the promotion item is Grundfos + Water Filter package. Grundfos will send their demo truck to our showroom during those few days, u can come and have a look.

Here is the pump that i m using but this model has been discontinued. Grundfos CH-PC model is slightly noisier than this.


This post has been edited by zheilwane: Aug 13 2011, 01:47 AM

watch the whole video, no sound at all...

Just a quick question, where did u purchase the pump from? The seller cant help u? You should really buy from some1 who is professional and could give u good advise. For example, if ur plumber has done the piping as per ur photo, you will have some problems after the installation....

a) The most important thing, you need to install PVC unions as per grundfos requirements.

b) If cold water is boosted by the water pump while the hot water is using water tank's water, your hot water pressure will b much weaker than the cold water. So, when u r showering, you will feel the water is not hot enough as u r getting more cold water than hot. Therefore, the tank's outlet should go into your pump then split to ur heater and down to your bathroom. By doing this, you will have same pressure for both hot and cold.

c) The pump by pass is wrong. Imagine u r using 8-10" rain shower but ur pump is out of order, so you will b using the pump by pass. However, the water supply is from the tank, do you think u will have sufficient water pressure to power up the rain showers? You should do a main water by pass instead.

Here is how the installation should look like


Hope that answers ur question

This post has been edited by zheilwane: Oct 2 2011, 12:38 AM

ahhaah took me 30 minutes to edit the diagram... gonna charge u for consultation hahaha.

Yes, Grundfos CM and CH pumps do have a non return valve. So, water will not travel from the outlet to inlet.

Unfortunately, i do not have a branch in Johor and we don provide delivery service upto Johor. However, if you are interested with Fotile Hood, hob + oven, just PM me as FOTILE could provide FREE delivery service throughout west malaysia.

This post has been edited by zheilwane: Oct 2 2011, 10:56 AM

THis is what i call CUSTOMER SERVICE ahhaha, though u r not my customer

This post has been edited by zheilwane: Oct 2 2011, 11:34 AM

Most of the people who install a water pump wants their pressure to be as strong as possible. If u wan something less powerful and 1/2 the price, HITACHI or Panasonic is what u nd.

If u r worried that the pump might damage ur piping then get Grundfos UNI E. It has a control panel to control water pressure, slow start and stop, will not give too much pressure to ur pipes. If u wan to know more, just drop by my showroom to have a look at the demo.

Normal PVC pipes could withstand minimum 5 times the pressure of an ordinary Grundfos pump, it only leaks if ur plumber did not do a good job. If u do not trust ur plumber's work, better don hire them in the first place. Hotels are using big system pumps, the pressure is much stronger than our household water pumps but why their bidets or showers with flexible hose did not burst? If a bidet or hand shower's flexible hose can withstand the pressure, PVC pipes could do better. DO not use the BLUE ABS pipes, they are more expensive but not as good as GREY PVC pipes

This post has been edited by zheilwane: Oct 2 2011, 09:42 PM

It should b OK. However, if the direct water is very weak than that will b a problem. You will have more cold water than hot.

preset 2.5 bar, u can lower it til 2.2 bar but recommended to get it 2.5 bar. Normal CH pumps are about 3bar +

Actually is based on ur personal preference. If u like Hotel style like this, u need a pump....Once u equipped these in ur bathrooms, you will feel reluctant to leave ur bathroom ahha..





This post has been edited by zheilwane: Oct 4 2011, 10:58 PM

u will definitely use more water with a rain shower compared with a hand shower... but u will enjoy it. Most of my customers told me, once u used Rain shower, u wotn wanna use back the old instant heater's shower

If the water supply for storage heater is from main water while cold is from water pump. Imagine u r showering, some1 in the kitchen turns on the tap, your main water pressure will drop. Hence, the hot water will slow down and you will feel the water suddenly become cold. Therefore, both cold and hob water must be from the same source.

THanks Bro

Never tried this before, but i guess this should work. Why u wanna do so?

The main will fill up the top tank first. WHen water level reaches the top level, it will flow down to the ground floor tank. Once the ground floor tank is filled upto the infill valve level, the water will stop. Hence, the main water will continue to fill up the top floor tank until it reaches the max level which will then turn off the infill valve and stop the water from entering the top tank.

This post has been edited by zheilwane: Oct 14 2011, 09:45 PM


Attached thumbnail(s)

btw, i m zean not zhen aha. Shall i start a new topic on water tank?

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Added on October 14, 2011, 11:44 pmLess continue here
http://forum.lowyat.net/index.php?showtopic=2070911

This post has been edited by zheilwane: Oct 14 2011, 11:44 PM

Yup, it is DAMN powerful and you can now enjoy ur shower to the max. For bidet, just turn ur angle valve to half den it should b OK d.

Btw, how is the noise level?

This post has been edited by zheilwane: Oct 16 2011, 10:17 PM

make sure ur plumber did not install the pump on the beam and put the anti vibration pad that i gave u, really helps a lot.

Sorry bro, kinda bz today, nd 2 to do some stuff for this coming HOMEDEC.

I guess weikee already answered all ur questions.

The pump should stop if u did not turn on the tap (no sound at all). If ur pump is running non-stop, turn off the ball valve rite after the pump if ur plumber did install 1. After closing the valve and the pump stops, that means nothing wrong with the pump and there is a leak somewhere. If the pump still operates, ask ur plumber to check the water outlet of the pump (at the top), may b some glue drip into the pump. If it still cant work, jus call grundfos 03-5569 2330 or me.

This is a ball valve

thatz rite, with that price, u can get GRUNDFOS from me.

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Added on October 27, 2011, 9:44 pmIf the water pressure is too low, it might not have sufficient water for the pump to boost.

This post has been edited by zheilwane: Oct 27 2011, 09:44 PM