Unvented Cylinder v Thermal Store

[steve26]

I would like to install a HW system to a light commercial kitchen serving a dining eating area, typical loads are:

-5 no. 50litre capacity sinks (250 litre total)
-D/washer (40 litres/hour)
-8no. whb's (50 litres)

What are the benefits (if any) of a thermal store / heat exchanger system over a more common indirect HW unvented cylinder, I guess we may need two cylinders whichever system was installed to cope with the HW demand?

We really don't want to run out of hot water, although I don't want a system more suited to running a large hotel!!

If anyone has any experience / advice I would be very grateful
Thankyou.

 

[The Baker]

Have you considerd the Rinnai Gas Powered Continious Water Heaters.

This company will be happy to give very helpful advice, please say Tim mentioned them to you

http://www.rinnaiuk.com/

 

[steve26]

Have you considerd the Rinnai Gas Powered Continious Water Heaters.

This company will be happy to give very helpful advice, please say Tim mentioned them to you

http://www.rinnaiuk.com/[/QUOTE]

Thanks, I've had a look at the Rinnai site, would you rule out stored HW altogether, I would have though two large indirect HW cylinders would be more than enough with 600 litres available, even taking into account re-heat times?? Although I am no expert, what are your thoughts?

Are the Rinnai units like glorified 'combi boilers' without the heating. i.e. the units only put out so many l/min of hot water. I have a combi at home and it is pathetic when somone is washing up and you want to run a bath!!!

Also the system will need a secondary HW loop, can you incorporate this onto a system using Rinnai unit?
Thanks

 

[numpty1]

Are the Rinnai units like glorified 'combi boilers' without the heating. i.e. the units only put out so many l/min of hot water. I have a combi at home and it is pathetic when somone is washing up and you want to run a bath!!!

no they are quality products designed just for hot water and yes they are subject to pressure and flow.

Also the system will need a secondary HW loop, can you incorporate this onto a system using Rinnai unit?

oh yes

mucked that up

 

[steve26]

I have been on the ACV website they do HW cylinders with a high recovery rate, better than the standard indirect cylinders?

 

[ChrisR]

As I wrote in your other thread, you need to consider ALL your constraints/resources, and needs, together. Or I should say a suitable engineer does. If you ask odd questions about specific products you'll not get a "whole" answer.