4.5l v 6.0l flushes - 545 protruding v 480 protruding

[Fallingditch]

My question is a very simple one (if a bit anal LOL): if I buy compact (480mm) protruding wall hung WCs rather than 545mm protruding - is there a downside?

 

• will they look like child's toilets?
• will they be more uncomfortable for larger people?
• will they look a bit weird?

 

(explanation

I bought three Grohe concealed cisterns. They can be configured for a 6l or 3 litre flush. The standard size WCs I was going to buy (Duravit) requires a 4.5 litre flus maximumh. I don't want to take the risk of buying a 4.5 litre WC, sending 6l down it, and washing the floor at the same time. If I buy the compact size WC in the same range, they take a 6l flush  (for 15 euros more). So on the arse face* of it, there's not that much difference, and so I plan to buy the compact).

 

* sometimes I can't tell the difference

 

 

 

[Tennentslager]

Personal opinion but I'd always got for the bigger flush. Small one you'd be flushing twice every time?

[ProDave]

I would be surprised if a toilet overflowed because you flushed it with too much water, unless it was blocked.

 

To some extent you can reduce the volume of the flush by adjusting the float so it does not fill as high if that did prove to be a problem.

 

[Steptoe]

I'm pretty sure there used to be some guidance about the pan having to be able to contain the full contents of the cistern in case it did get blocked @ProDave

 

If the float level can't be adjusted enough, The other option is to put a brick in it

 

[Nickfromwales]

On 09/01/2017 at 17:35, Steptoe said:

I'm pretty sure there used to be some guidance about the pan having to be able to contain the full contents of the cistern in case it did get blocked @ProDave

 

If the float level can't be adjusted enough, The other option is to put a brick in it

 

I can't see any merit in buying too small a cistern as they're almost all dual flush nowadays anyhoo. 3 / 6 flushed by pressing the small or large part of the button . 

With regards to pan volume I doubt if that's a rule anymore ( and the first time I've ever heard that TBH ) because all modern cisterns have internal overflows so the flush could be going full whack all day and night until resolved. 

I woujd think the volume suggested is an European initiative for reducing water consumption and nothing else.

As @ProDave says, it'll never wash the bathroom floor by 'over-flushing' as the flush doesn't come out in one go, it gets released over the space of a couple of seconds. Long enough for the stagnant water / contents of the pan to get moving and after that it could continue flushing for the next hour without issue. 

The extra 1.5 l of water won't make an ounce of difference to the pan, but you'll soon miss it when you need to shift the aftermath of a dodgy chicken madras.

As stated, just dial back the bigger cistern if you want to save water, but 1.5 l isn't going to make you lose sleep, but waiting / flushing twice will.