Potterton Netaheat 16-22 question

[glosboy]

Just moved into a house which has a Netaheat 16-22 boiler in an outhouse and what seems to be a gravity fed domestic hot water tank in one of the bedrooms.

The tank takes up a lot of space in the bedroom and I would like to use the space by getting rid of the tank and the airing space etc.

Also, the hot water pressure is rubbish and showers are not really possible as the hot water is non existent.

Is it possible to replace the Netaheat with something newer and get rid of the tank upstairs altogether ?

 

[Agile]

Yes you need a combi boiler but the incoming mains water must be able to give an absolute minimum of 10 li/min but ideally about 20 li/min.

It will take much longer to fill baths though, about 10-15 min!!!

Cost about £2000-£3500 typically.

Tony

 

[glosboy]

thanks

what sort of boiler is the one i have now then ?

 

[Agile]

Heat only standard efficiency!

Tony

 

[tonybhoy]

Yes you need a combi boiler but the incoming mains water must be able to give an absolute minimum of 10 li/min but ideally about 20 li/min.

It will take much longer to fill baths though, about 10-15 min!!!



Tony

Sometimes though,in fact most times, the combi is an improvement on the existing plumbing in terms of water delivery/flow at the taps.

 

[ChrisR]

Sometimes though,in fact most times, the combi is an improvement on the existing plumbing in terms of water delivery/flow at the taps.

Wouldn't agree. Standard 3/4" bath tap with the cistern on the floor of the ceiling above gives 20 litres/minute, and that can be at 60°. Plus the Cold.
That's 3 or 4 times as fast as a 24kW combi.

 

[tonybhoy]

Sometimes though,in fact most times, the combi is an improvement on the existing plumbing in terms of water delivery/flow at the taps.

Wouldn't agree. Standard 3/4" bath tap with the cistern on the floor of the ceiling above gives 20 litres/minute, and that can be at 60°. Plus the Cold.
That's 3 or 4 times as fast as a 24kW combi.

Who fits 24KW combis these days?Anyway 9X3 when I went to school was 27 and 8X3 was definitely 24 unless they've changed it

35 KW gives you about 15litres or nearly three gallons a minute ,hardly a big difference.

Some flats (where I live) have the plumbing unit cold water tank barely above the kitchen mixer tap and an awful lot of houses have tiny wee combination cylinders that can hardly fill a bath and yet the owner will say to that combis are p!sh on the hot water

 

[Agile]

Fourth floor flat I went to today had a combi fed from a roof tank via a shower pump!

Tony