Boiler choice

[Fireboy24]

Hi there, just wondering if anyone has fitted the worcester high flow floor standing Combi? Got a customer who has two bathrooms and is thinking of going into the loft. They don't have great pressure/flow but have to get rid of the open vented system. Thinking of getting. TWS cylinder feeding the high flow Combi. Is the performance off those high flow combi's really that good with two bathrooms running?? havent read into the TWS cylinders yet but presuming they'd ensure flow and pressure weren't an issue. Could just go unvented cylinder but reckon this route saves the customer a few ££ and would still perform well......

 

[AWheating]

I've fitted one as a replacement to an older version and on a water main that would not really have suited an unvented cylinder. It worked fine but due to the water main issue was not really pushed to its limit.

They are a pig to fit due to the 100 odd kg weight and there size. If you have the space to fit an unvented cylinder go with that. What's the mains pressure and flow rates?

 

[Unregistered]

At the moment 16 litres a minute and 2.5 bar static. I wanna push that up a bit with the TWS cylinder to make sure I maximise the 20l hot water the worcester says it will provide. I can't dig up the front to upgrade the mains coming in as they've just had Victorian paving put in!

 

[AWheating]

What's this tws cylinder? A booster setup?