After using this system for a few weeks, I noticed the following problems:
- Low water pressure on the 2nd floor when pump is not plugged in. The reason is that there's not much difference between the storage tank outlet and the pipe responsible for delivering water in the 2nd floor.
- When the water pressure from the supply is high, and the pump is not plugged in, the water flows okay (using the green line). The pressure is not high though, but enough to deliver water to the 2nd floor. The problem is the water from the supply can't fill the pressure tank (via blue line). I have no idea how water pump works, but should water flow through it when it's not running?
- When both the storage tank is full and the pressure tank is also full (meaning it has reached the upper limit in the gauge), the pressure switch works well and turns off the pump. However, a slight drop in of pressure (say I just simply open a tap for a few seconds) in the pressure tank (the gauge reading drops down), the pump starts running again.
The following are the ideas that I thought would solve the problems above. I'm no expert when it comes to water system so I'm looking for your inputs and suggestions. The following are the ideas that I thought would solve the problems above. I'm no expert when it comes to water system so I'm looking for your inputs and suggestions.
To solve problem 1, I'm thinking of inserting a small pressure tank (6 gal) between the storage tank outlet and the pipe responsible for delivering water in the 2nd floor (see broken-line orange box).
To avoid the pump running when the pressure from the supply is high, I'm thinking of putting another pipe that will connect the water supply to the pressure tank directly (see orange pipe).
This system was installed 3 weeks ago so I'm assuming there's nothing that's been broken already since the day it's installed.