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> [WTA] Grundfos Water Pump, CH-PT or CH-PC

lfchang1984
post Apr 7 2011, 04:59 PM, updated 8y ago

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Would like to ask LYN forummers' opinion on which Grundfos pump to use for my house..
My house is a 3-storey terrace with 4 bathroom, 4 water outlet each.
All bathrooms and dry kitchen's water is supplied from the water tank on top of the roof.
My problem is that the water pressure is pretty low on the 3rd floor.
I would like to install water heater in all my bathrooms.
I haven't decided whether I should install 3 water heaters with DC pump or Grundfos water pump & water heaters without DC pump.
Local kitchen accessories supplier recommended me CH2-50PT for RM16XX.
Therefore, I would like to ask your opinion whether CH-PT or CH-PC or any other Grundfos model which able to solve my water pressure problem. Or just water heaters with DC pump?
Thanks.
kakulukia
post Apr 7 2011, 05:33 PM

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QUOTE(lfchang1984 @ Apr 7 2011, 04:59 PM)
Would like to ask LYN forummers' opinion on which Grundfos pump to use for my house..
My house is a 3-storey terrace with 4 bathroom, 4 water outlet each.
All bathrooms and dry kitchen's water is supplied from the water tank on top of the roof.
My problem is that the water pressure is pretty low on the 3rd floor.
I would like to install water heater in all my bathrooms.
I haven't decided whether I should install 3 water heaters with DC pump or Grundfos water pump & water heaters without DC pump.
Local kitchen accessories supplier recommended me CH2-50PT for RM16XX.
Therefore, I would like to ask your opinion whether CH-PT or CH-PC or any other Grundfos model which able to solve my water pressure problem. Or just water heaters with DC pump?
Thanks.
*
I'm using Grundfos, and its very quiet and reliable. Forget about other brands and just use this brand, although I think you can get it much cheaper. I think I paid about RM 1250 about 1 year ago, but I must admit I'm not very sure its the same model.
tankiasu
post Apr 7 2011, 06:48 PM

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QUOTE(kakulukia @ Apr 7 2011, 05:33 PM)
I'm using Grundfos, and its very quiet and reliable. Forget about other brands and just use this brand, although I think you can get it much cheaper. I think I paid about RM 1250 about 1 year ago, but I must admit I'm not very sure its the same model.
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I agree. Grundfos is significantly better than other brands in it's price bracket. I'm using CH-PC now for my DS link house. Water pressure is good for both floors.
zheilwane
post Apr 7 2011, 09:01 PM

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yup, grundfos is better, tatz y it is more exp compared 2 other brands. Been selling them for many years, only focus on grundfos as other cheap brands will eventually give us headache (complains from customers)

Most would get the CH-PC model as it is cheaper and maintenance free. CH-PT model is more exp and need to pump air once a year and servicing around 3 years once. Most ppl would recommend to use CH-PT to make more profit and also to earn ur servicing fee every year.

Many shops will ask u to get CH-PT and will not advise u about the maintenance part. After 1 year+ if u dont pump air, your pump will start giving u problem. Since it is after the warranty period, u will call them to fix it. Usually they will need to change the tank (ard RM 300+) then advise u about the yearly maintenance thing. So, you will call them once a year to service the pump.

This post has been edited by zheilwane: Apr 7 2011, 09:06 PM
jojozep
post Apr 7 2011, 09:06 PM

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QUOTE(zheilwane @ Apr 7 2011, 09:01 PM)
yup, grundfos is better, tatz y it is more exp compared 2 other brands. Been selling them for many years, only focus on grundfos as other cheap brands will eventually give us headache (complains from customers)
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how much for the pump now? can post pics and price?
zheilwane
post Apr 7 2011, 09:09 PM

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jus drop by my showroom for price. Not convenient to post the prices here.

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trojant
post Apr 7 2011, 10:37 PM

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QUOTE(zheilwane @ Apr 7 2011, 10:09 PM)
jus drop by my showroom for price. Not convenient to post the prices here.

Click on my signature for facebook & location map
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zheilwane, do u cover installation for the pump if purchase from you?
to install the pump, we need to install wiring point too?
in common practice, where normally the on/off switch to be located?

tq
zheilwane
post Apr 7 2011, 10:54 PM

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Usually i would advise my customers to prepare a switch whereby u can turn on/off the pump easily for maintenance or if u r going out and etc. I can include installation but do not cover preparing the wiring or switch. YOu will need to get your wiremen to prepare a socket point for my men to plug in the pump. U will need to drop by my showroom for detail explanation of the installation as it is not as ez as installing the inlet n outlet point. Installation takes around 2-3 hours.
manufreak07
post Apr 8 2011, 10:53 AM

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just bought one from zheilwane as well ...
CH-PC for 4 bathrooms ... more than enough ... i think it’s over power .. i use to just switch on half of the tap water

zheilwane
post Apr 8 2011, 09:52 PM

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Yeah, CH2-50PC is very powerful already. If u are using big rain showers like 12" and above, then u get CH4-40PC. Whether it is overpower or not, really depends on individual preference. Some might feel it is too strong but some feel it is not strong enough. For me, it is just nice. The reason many ppl install a water pump is to get strong water pressure to have a relaxing and comfortable shower after work.

This post has been edited by zheilwane: Jul 7 2011, 01:23 AM
ray01
post Apr 10 2011, 02:45 AM

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I am renovating my sub-sale Double storey house. Just changed the poly to ss tank on the roof. Need you advise should I install the pump at the water meter -ground floor or at the Tank outlet so that the shower press at top floor would be good and the whole house piping press good. Which model do you suggest and price. Have 3 bath at top and 1 at groundfloor. How the pump cut in and out. If it runs all the time, worry the pvc pipe might leak.
Thank You. Can PM for confidential price.
naing
post Apr 11 2011, 08:49 AM

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QUOTE(zheilwane @ Apr 8 2011, 09:52 PM)
Yeah, CH2-50PC is very powerful already. If u are using big rain showers like 12" and above, then u get CH4-40PC
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Can you please PM me the best price for CH-PC with installation? Thanks....
JinXXX
post Apr 13 2011, 01:03 PM

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usually what is the ideal.. water pressure..

and flowrate for taps/ water outlets eg pipe and sorts ?
zheilwane
post Apr 14 2011, 08:03 AM

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QUOTE(JinXXX @ Apr 13 2011, 01:03 PM)
usually what is the ideal.. water pressure..

and flowrate for taps/ water outlets eg pipe and sorts ?
*
Actually, Grundfos CH2-50PC is good enough for most houses.
- 0.75 HP
- Max Head : 45m
- Max Flow rate : 56 l/min

But if u are using big rain showers (10" and above), you might wan to get CH4-40PC to increase the flowrate.

This post has been edited by zheilwane: Apr 14 2011, 08:04 AM
JinXXX
post Apr 14 2011, 10:49 AM

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QUOTE(zheilwane @ Apr 14 2011, 08:03 AM)
Actually, Grundfos CH2-50PC is good enough for most houses.
- 0.75 HP
- Max Head      : 45m
- Max Flow rate : 56 l/min

But if u are using big rain showers (10" and above), you might wan to get CH4-40PC to increase the flowrate.
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wah, why all the spec like overkill spec one..

btw MAX head means what ? 45m = 45meter ??

zheilwane
post Apr 14 2011, 01:36 PM

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what u mean overkill spec? U asked about flow rate so i thought u wan some technical data.

Yes, can pump up to maximum 45meter high but at that height, the flow rate is very low.

Briefly, this pump is sufficient to supply strong water pressure upto 5 person showering at the same time using small rain showers (below 10") or instant heaters.
YILI ENGINEERING
post Apr 14 2011, 10:56 PM

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QUOTE(ray01 @ Apr 10 2011, 02:45 AM)
I am renovating my sub-sale Double storey house. Just changed the poly to ss tank on the roof. Need you advise should I install the pump at the water meter -ground floor or at the Tank outlet so that the shower press at top floor would be good and the whole house piping press good. Which model do you suggest and price. Have 3 bath at top and 1 at groundfloor. How the pump cut in and out. If it runs all the time, worry the pvc pipe might leak.
Thank You.  Can PM for confidential price.
*
Definitely install at the tank outlet. Installing pump after water meter is illegal and will be fine. Need more info on water pump, come and look on this thread.
Water Pump Specialist
maul
post Apr 15 2011, 10:34 AM

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I got a question. I have 2 bathroom upstairs and running direct water from meter. So if one bathroom flush the toilet, habislah cannot take shower in the 2nd bathroom. I am thinking of installing grundfos but told by plumber that me house is >10 years old so afraid the piping might not tahan and leak or burst. Told better to change pipe. Pipe either outside the wall which looks ugly or kena hacking wall and tiles.

You think plumber is correct?
JinXXX
post Apr 15 2011, 01:15 PM

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QUOTE(maul @ Apr 15 2011, 10:34 AM)
I got a question. I have 2 bathroom upstairs and running direct water from meter. So if one bathroom flush the toilet, habislah cannot take shower in the 2nd bathroom. I am thinking of installing grundfos but told by plumber that me house is >10 years old so afraid the piping might not tahan and leak or burst. Told better to change pipe. Pipe either outside the wall which looks ugly or kena hacking wall and tiles.

You think plumber is correct?
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yup....

usually is like that... one.. unless u take measurement of the original pressure , cause you said direct...

then set ur pump to be similar.. then should be no problem.. usually the leak will be at the joints/fitting areas...

its always a 50/50 risk.. thats why is best to get the right pump that gives the right amount of pressure..

else will bocor here and there...
zheilwane
post Apr 15 2011, 01:25 PM

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QUOTE(JinXXX @ Apr 15 2011, 01:15 PM)
yup....

usually is like that... one.. unless u take measurement of the original pressure , cause you said direct...

then set ur pump to be similar.. then should be no problem.. usually the leak will be at the joints/fitting areas...

its always a 50/50 risk.. thats why is best to get the right pump that gives the right amount of pressure..

else will bocor here and there...
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Jinxxx u seem to know a lot about pumps, why would u ask me about flowrate at the first place?

Another way, install the pump first, mana bocor den fix where. But quite risky, i installed mine after 10 years also, luckily two areas bocor only.

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