Combi for shower HW only / keeping indirect cylinder?

[echoes]

Hi,

I'm getting in a few quotes for a boiler replacement. Then current system is gravity HW/pumped CH. It's a 3 bed house with 1 bathroom.

I've discussed it with a heating engineer who reccommended a system or conventional boiler keeping the indirect cylinder rather than installing a combi, which seemed sensible enough.

I would like a decent shower with more pressure then the current 30cm head which I have right now, that will be unaffected by other hot taps being used.

I was considering a shower pump with a larger CW storage tank and separate flange from the cylinder.

But I am wonding if having a combi supplying DHW to a thermostatic shower valve exclusively, and keeping the cylinder for the rest of the HW might be a feasable idea (Use the combi with a Y or S plan). This would give me a decent shower and also allow an immersion to be used for HW in emergencies, and allow a bath to be run quickly from the HW cylinder.

Any thoughts? If it's a daft idea, please enlighten me.

 

[kevplumb]

hardly a daft idea
exept

you use the combi for the kitchen/utility

and the cylinder for the bathroom/shower

reason

if a cold tap is turned on it won't affect the shower

 

[Tibbot]

You can buy cylinders with a small extra mains coil for showers.

 

[echoes]

Thanks kevplumb.

My main reason for this was to remove the need for a pumped shower though. Woman and I both like the pressure from a combi-fed shower, but we don't like it when another hot tap is used!

Would the shower flow be that much affected by turning on a mains cold tap? Engineer said mains pressure was 'decent', but he didn't measure it.

 

[echoes]

You can buy cylinders with a small extra mains coil for showers.

Can you direct me to any reading for these...? - I'm not familiar with such.