Hot water supply to new install shower

[Zimkitch]

Hello everyone, I'm a first timer to diynot and would be grateful for any help.
Am soon to install an Aqualisa Quartz digital pumped shower and have a query re the hot water supply to the pump/processor. Am I right in thinking I can merely T-off with 15mm from the cylinder hot output 22mm? (as opposed to fitting a Surrey). If so, must I T-off at a point after where it T's-off to the vent? or can I T-off at a point along the horizontal just after it exits the cylinder?

Hope that made sense. It did in my mind....

Thanks[/u]

 

[seco services]

yes you can t off the horizontal or t off the vertical pipe below the horizontal t.
when you t of the horizontal t off underneath not above then loop back up.
if you t off the horizontal pipe upwards it will draw air to the pump.

these are both accepted by aqualisa and won't affect your warranty.

 

[Zimkitch]

Seco - thanks a lot. That's a weight off.

 

[seco services]

it should show you in the manuals if i remember.
try and fit full bore isolation valves aswell.

i know they have got them on the pump but one near the cylinder on the hot and one on the cold near the tank is handy.

 

[Zimkitch]

Hello me again. Following Seco's advice have checked out the horizontal hot output from the cylinder. When you say I should T-off underneath - do mean like 90 degrees downwards from the horizontal output? Just that there aint a lot of room between the horizontal and the top of the cylinder. Can I get away with a gentle (say 45 degree) descent from the underside of the horizontal?
Man I hope that made sense...and that I'm posting this question in the right format.
Thanks