Hi All..
My house is a 3-storey bungalow with 8 bathroom, all room using rain shower.
my water tank is on top of the roof which can say is located on 4th foor.
I would like to install solar heating system for my house.
My question is which grundfos model is suitable for me ? Do i need 2 pump that mean 1 for pumping the water from main water suppy to water tank n another for solar system?pls advice
thanks