I was wondering if the grundfos use 13A or 21A wiring?
I need to install one at top of the roof with a switch at my master bed room.

Why put the switch in a room? is better put in common area. When other need to use it can switch it on.

it use 13Amps

Common area now i got no place to put, hard to explain this but the switch will always ON unless i go out for vacation.
so u know the answer? 13A or 21A?
I just wonder my pipe need to change or not if i change to use the water pump.

Is better to switch off the pump when not in use, e.g. out to work. Any small leak, the pump with switch on, off and that reduce the pump lifespan, and also making the leak worse.

Pipe, better ask the pro to answer. I am not pro.

zheilwane..could PM me the price of CH2-50PC and CH4-40PC.. btw mine is double story house with the tank is located outside. Have 3 bathroom.

does it need to have pressure switch? Please advise this!

thanks!

I have a question... What if the tank is situated at concrete slap, and exposed, pump should be indoor or can just be exposed sitting beside the tank?

are the pump will make pipe leaking if too strong?

You can reduce the pressure by the regulator and cutoff switch.

I heard got 1 model direct can't control one. Is it true? Mostly contractor will recommend it because easy installation.

zheilwane pm CH2-50PC.tq

Hi guys, does anyone know how much is a Grundfos submersible pump (model AP 12-50) cost? Is this pump suitable to pump up water from ground level to up till 2nd floor?

My Grundfos water pump at roof top is very noisy. Model is CM 5-4 PC. Anyone having the same problem?

Hi all, I also want to ask if water pumps are water proof or not?
I ask because my water tank is located on roof concrete slab, so obviously it will be expose to rain.

got put the dampening "mat" under the pump ??


water proof ? nope... dont think so its water proof unless u get a submersible one

Submerged pump design to get cooling from submerged water. If no water it maybe overheat.

Normally these water pumps are rated to IP55, which shall able to withstand even water jet from all angles technically! Rain water shouldn't cause too much harm to the pumps!

Some submersible pumps can be installed at dry pit without any problem.

Yes, and need to know the cooling spec or requirement.

Wow thanks jinxxx, *cg* and weikee. Very usefull inputs for you all.