"Christian McArdle" wrote in message
. net...

What the hell are you all on about?

Just do what I suggested. Easy, low
pump noises free flow, self venting,

easy to isolate all parts in the
airing cupboard, etc.

Well, your description isn't quite clear.

In particular, you don't really
explain where the fill connection goes.

You mention a T for the pump before
the T for the feed, but why would

another T be needed? I'm hoping you mean
just use the remaining outlet from

the previous T for the feed. Perhaps a
diagram would help?



Again:



The boiler is downstairs, the F&E tank in the loft. The flow from the
boiler will go directly to the overflow over the F&E tank.

- In the airing cupboard tee off as high as possible near the ceiling on
this 22mm pipe.
- Bend down to the cylinder beneath.

- Tee off, to top of cylinder coil
- This pipe then enters the 2-way valve.

- a bend from the tee at the cylinder and insert the ch 2-way valve

- half way down the pipe from the top tee to the 3-way valve tee insert the
pump.

You will have a straight run either side of the pump reducing water noises.
Aso, it will make the system self venting. Any air in the DHW coil will
rise up through the 2-way valve past the pump and to the vent. Same with the
CH side.

To stop the pump sucking in air, take the 15mm cold feed from the F&E tank
and tee it into the pipe from the open vent pipe tee to the pump. Keep it
just before the tee, in other words the two tees together. The pump pulls
down on the cold feed from the F&E tank and open vent, with virtually the
same suction on both

- Self venting.
- Low noise
- no air sucked in.



Draw it out. It is one simple way of preventing air accumulating and
reducing pump noises. The pump will also be above the cylinder and easy to
get at.




Use fixed font.

============ Vent
||
||¦ ¦
||¦ F&E tank ¦
|| -----------
|| ¦¦
|| ¦¦T (cold feed from F&E)
T||===== Horiz. pipe near linen
|| || cupboard ceiling
T = Tee || C||
|| ||
|| C|| Pump in centre of
|| (P ) long straight firmly
|| C|| clipped (C) to wall
|| ||
|| C||
|| ||T
|| ZV====ZV= - To DHW coil flow
|||| (ZV = Z valve)
||||
|| Flow to CH rads
||
From boiler flow
(Combined fill, vent & flow)