megaflow unvented hot water system

[mpd5]

Hi I have just bought a bungalow that I am renovating for my daughter. it appears to have no cold water cylinder and a blue tank which I assume is a megaflow as the cold water main seems to be connected to it. I have drained the central heating system to move pipes /rads around, the boiler seems to be connected to a header tank in the loft.

Pipework is very complex as a newish solar panel is also fitted on the roof.

The bathroom is on the ground floor and the megaflow is in the first floor dormer.
Questions:-

1. I shouldnt need a pump for a ground floor shower as its effectively mains pressure hot water?

2. Anything I need to consider when turning the water back on and filling the system?

3. The tank has an immersion heater but is not connected. can I safely connect it to a switched supply for emergency hot water?

4. I want to run a 15mm hot water feed back upstairs from the bathroom to a sink on the first floor that will be nearly the same height as the top of the tank. Will I get good hot water pressure here?

Thanks in advance. MPD5

 

[JPC]

souns like open vented c/h with unvented hot water?
1 - no
2 - no (usual airlocks etc)
3 must get correct immersion from cylinder manufacturers
4 hot water is mains...so will be as good as your mains water

worth getting the unvented serviced (by qualified plumber)

 

[doitall]

1, should read cannot fit a pump.

3, should read wire back to the CU.

The immersion must be wired through a thermal cut-out, should all be integral, but you shouldn't be playing with an un-vented cylinder.

 

[mpd5]

Thanks for the swift replies chaps, the immersion heater coil is in situ and there is a tank stat /cut out? that is already connected to the cylinder.

There is a feed from the consumer unit to the old airing upboard (switched) which is directly below the tank that I intend to extend.

Perhaps I should get a qualified 'unventer' to connect me up once I run the supply and get the system serviced / checked at the same time.

Sounds like this system will save me the expense of a costly pump anyway.

Cheers!
mpd5