22mm gravity feed or 15 mm pumped feed for bath?

[Daryll]

ok, so I'm refurbing the bathroom, and tying to decide how to fill the bath....

I'll have H & C 22mm feeds from the HWC and the cold tank in the loft (8 ft above the bath) which I could connect to the bath taps, or....

I'm planning on fitting one of the Aqualisa Quartz pumped showers over the bath and I see they now do a diverter and overflow filler which can use the pumped Quartz unit to fill the bath.

Which will fill the bath the quickest.....Individual H&C 22mm feeds, or a single pumped 15 mm feed..??

(and does anyone know what sort of pressure (bar) these Aqualisa Quartz pumped units put out..? I can't find it anywhere, all they give is an approx flow rate)

 

[ChrisR]

"3/4" taps will give you about 20 litres per minute each with that setup. More than from the shower in other words.

 

[Daryll]

ok, thanks ChrisR.

Tha Quartz pump supposedly gives 12-13 Lpm, or 18 Lpm on "boost" so yes, the 22mm feeds seems the way to go.

 

[JohnD]

if you can gets lots of flow from a 22mm pipe, why would you want to add extra cost and complexity by using a pump instead?

 

[Daryll]

if you can gets lots of flow from a 22mm pipe, why would you want to add extra cost and complexity by using a pump instead?

To give the best flow for a shower.... the bath taps will be approx 8 ft below the CW tank, but the shower head will only be about 2 ft below the tank... so much less pressure, so needs pumping.

 

[JohnD]

OK, so I can see you need a pump for a forcefull shower, but not for the bath

 

[Daryll]

OK, so I can see you need a pump for a forcefull shower, but not for the bath

Agreed... but while I was installing a pumped shower and there was an option to have it fill the bath too, I wondered whether to go that way, or stick with the "traditional" method of 22mm bath taps...hence my original question...

The shower diverter would mean slightly less plumbing too...