shower pump advice

[Werth]

Hi,

I just need some advice regarding a shower pump I am thinking of getting fitted. It will need to be a negative head pump as my shower will be in the loft. Does the cold feed for the pump need its own supply? As the tank is on the opposite side of the house and the floor is laminated etc, or could I tee off the cold feed to the cylinder? My only concern is if the cylinder would be starved of the cold refilling, causing air locks.
On the hot side of things, can I just tee off the hot soon as it exits the cylinder, or would I use a surrey flange?

thanks.

 

[Thedeester1]

Its going to be really quite difficult to estimate this. Other factors are going to have to be calculated like is some going to be brushing their teeth while you are in the shower. Only so much water can pass through the 15mm pipe that comes from the main! It would probably be better to have a cold water header tank for the shower? That way you have a reserve of water. That said then your cold feed is trying to fill 2 tanks instead of one! Depending on the temperature of the hot water in your cylinder a little bit of cold water can go a long way. If its not too hot then hardly any cold water will be used during showering as you wont need to cool the shower water hardly at all!

A surrey flange is a good idea and should stop the need for a shower header tank!

 

[plumbdoctor]

Hi it needs it's own hot and cold supply but always read the instructions