Rainhead replacement

[Madrab]

A combi, where the mains is good say > 2bar dynamic, will happily supply the larger rain shower heads. I have found it's simply down to pressure. Anything above 1 bar will feed the smaller rain shower heads without an issue, anything above 2 bar will happily supply the larger =>250mm heads as long as the flow isn't overly restricted.

 

[morqthana]

Guess I could get a pressure tester - they don't cost much.

 

[Justin Passing]

Guess I could get a pressure tester - they don't cost much.

Very useful things. They all have 3/4 F bsp tap connector fitting so get an adapter to 1/2" , + maybe a clamp on tap nozzle fittingto keep with it.

I seems the acceptability of combi-fed 305mm heads is a matter of opinion. It's not for me, or a couple of prospective users - but that's only 3 people.
Think of a hotel-standard shower. Anyone who's ever tried one will remember. That's what people not making excuses, can judge by. Those feel great when they're squirting a few gallons a minute of water at you at high velocity.
Do you judge shower sensation while thinking, "Remember it's only a combi"?!
Smaller head for me is ok with a combi, bigger is not. I had a house whiere we switched to a 36kW Vaillant where there had been a large head. An old boiler, store and pump had been used before, which was vastly better. The user wanted a smaller head for the combi. That head I have somewhere, a 6" Raindance iirc, was rejected too.

I remember one in a posh place in Dubai which was 2 foot square or something. Remarkable - the thought there was that that had all come through a desalination plant.
A mountain cascade in the top end of Oz was memorable too. Pressure practically zero because it was just spilling over a ledge, but the flow I couldn't even guess at. Maybe 4 bathfuls a minute?

 

[morqthana]

Very useful things. They all have 3/4 F bsp tap connector fitting so get an adapter to 1/2" , + maybe a clamp on tap nozzle fittingto keep with it.

I seems the acceptability of combi-fed 305mm heads is a matter of opinion. It's not for me, or a couple of prospective users - but that's only 3 people.

Think of a hotel-standard shower. Anyone who's ever tried one will remember. That's what people not making excuses, can judge by.

I have, and I know about those. It was also in a hotel where I tried one of those heads where they mix air into the water, to reduce the use of the latter. Surprisingly, air is not that effective at getting you clean.

Those feel great when they're squirting a few gallons a minute of water at you at high velocity.

Ah - I think I'm looking for something different from you and they.

It's a rain head. I want the water falling from it, not being squirted at high velocity. When mine does that I know it's time to clean the nozzles


I think my plan is:

Get a pressure tester, measure my pressure & flow rate.

If realistic, look for a cheapo larger head to try.

If it works get a better one.

If it doesn't replace the original Aqualisa 230mm.

 

[morqthana]

Mine is 280 230 mm. 36kW Combi. Works absolutely fine.