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Doctor Drivel[_2_] Doctor Drivel[_2_] is offline
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Default Automatic air vents - central heating...


"Adrian" wrote in message
...
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?


As clear as mud. Firstly, is this right? "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".

The return from the DHW cylinder and CH to the "top" of the thermal store?
Is that right?

Where is the CH flow connected to the system?
Where is the heat pump's flow connected to the system?

The vent pipe from the F&E tank. Where is it connected to the system?
The cold feed pipe from the F&E tank. Where is it connected to the system?