What system?

[glennw]

Customer currently has combi, but poor pressure to showers (only about 1.5 bar on incoming main.)

Wants to change complete system.

Doesn't want any loft tanks, although happy to have water storage in adjacent garage.
What would be the best system to give good shower pressure?

 

[helpsy]

Unvented?

 

[Puddle]

Just a thought !!

How about

Putting a normal cylinder in the garage with a tank above it also in the garage and fit a negative head pump on pipework to outlets to allow pressure to be increased to 3 Bar at said outlets

 

[stevetheplumber]

Just a thought !!

How about

Putting a normal cylinder in the garage with a tank above it also in the garage and fit a negative head pump on pipework to outlets to allow pressure to be increased to 3 Bar at said outlets

or the other way round put tank in garage and pump thru unvented cylinder taking cold from balanced supply

 

[glennw]

Thanks Guys.
Pumping out of a vented cylinder & cold tank in the garage makes sense and then just pressurising the central heating to eliminate F&E tank.
Is there any major downside to this as opposed to pumping into a pressurised cylinder which would be more expensive?
Thanks

 

[stevetheplumber]

Thanks Guys.
Pumping out of a vented cylinder & cold tank in the garage makes sense and then just pressurising the central heating to eliminate F&E tank.
Is there any major downside to this as opposed to pumping into a pressurised cylinder which would be more expensive?
Thanks[
no need to change the boiler just use it as a system boiler with combi hot just to kitchen or dont use the hot at all