would like to thank this forum/topic for all the wonderful discussion on pump/tanks and etc..

and here is my big ass tank to solve all my water problems until LAP/syabas off the main

thanks to zheilwane for his customer service..

BIG ASS TANK IS BIGGGG

and pay extra water bill,    power mean use more water  

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

I still don't know why they can design a self recharge system?

noob question..the pump will go after the tank outlet or from the solar outlet?

zheilwane, well technically QC for Italy should be better than TW right? At least that is my normal perception.

Anyhow, just check with my friend who had purchased this Gemini. He told me that Gemini material are majority plastic (good quality one), whereby Grundfos material is from steel (not stainless) and metal. So that sales people convince him that if get Grundfos, the steel will sooner or later become rusty since it's not stainless steel.

any comment?