advise on flow and return points unvented cylinder compared to the height of the header tank

[Inverness]

Hi guys, before I go ahead and install a indirect cylinder. The problem is in the loft where the flow and return points on the cylinder are similar height less than 0.1 bar to the header tank.
I'm worried about there might not be enough head from the top of header tank to the flow going into the cylinder. I could possibility move the header tank higher. Is there any thing else on the market that can solve this issue? Cheers

 

[doitmyself]

The title says "unvented cylinder", but you mention a header tank, which an unvented doesn't need. Can you be a bit clearer?

In any case, an unvented cylinder has to be installed by someone with a G3 qualification.

 

[ShaunCorbs]

The title says "unvented cylinder", but you mention a header tank, which an unvented doesn't need. Can you be a bit clearer?

In any case, an unvented cylinder has to be installed by someone with a G3 qualification.

Heating side

 

[ShaunCorbs]

I would seal the system also you put your extra bracing in ?

 

[fixitflav]

Hi guys, before I go ahead and install a indirect cylinder. The problem is in the loft where the flow and return points on the cylinder are similar height less than 0.1 bar to the header tank.
I'm worried about there might not be enough head from the top of header tank to the flow going into the cylinder. I could possibility move the header tank higher. Is there any thing else on the market that can solve this issue? Cheers

Provided the primary circuit is piped boiler - open vent - cold feed - pump, I don't see why it would be a problem.

 

[Jim Goodenough]

I installed a 200ltr last week with about 1m from bottom of F&E to F&R connections on UVHWS and it's working v well. (didn't need to alter existing CF or vent - was S Plan already).

 

[doitmyself]

Heating side

Got you. The OP is talking about the F&E tank, so it's the static head from tank to pump inlet which is important. The drop from the F&E tank to the inlet and outlet connections on the side of the cylinder is irrelevant as it's pumped circulation through the coil.