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Adrian Adrian is offline
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Default Automatic air vents - central heating...

HI

Doctor Drivel wrote:

"Adrian" wrote in message
...
HI

Doctor Drivel wrote:

"Adrian" wrote in message
...

Questions:
You have a thermal store/heat bank heated via a heat pump. It serves
CH and DHW via a plate heat exchanger. Is that so?


Not quite.

The heat store is simply a large tank containing water that's
circulated through the radiators / dhw tank. The circulating water is
heated by a heat pump (ground source)


Is it a pressurised thermal store? Or is it open vented - uses an
F&E tank to top it up?


No - not pressurised - it's part of the open f&e-tank-fed heating
circuit.


Adrian, where is the thermal store vented from, on the store and where
is the cold feed connected to it?



The easiest way for me to describe it is....

Imagine a conventional, non-pressurised, boiler system.
Replace the boiler with the Heatpump.
On the return circuit from the radiators / hot-water tank to the
'boiler' (and immediate 'before' the boiler), insert a big water tank -
with the return from the heating circuit piped to the top of the tank
and the return to the boiler piped from the bottom of the tank.

No separate vents or feeds connected to the store.

Heatpump and store are at ground-level, f&e tank is in the loft...

Hope that makes it clearer?

Adrian