Vinno said:Whats FHW and I will look at the papers.
DHW
Think Craigs had a few bevies and meant DHW
You know me to well Dave
Was it the installer you found the fault Vinno, or yourself
Vinno said:Whats FHW and I will look at the papers.
Think Craigs had a few bevies and meant DHW
That would be a shame Tony, I personally find yours, and others posts very helpful in my attempts to get my head around how these dammed combis work.But I usually give free advice on this web site although recent developments might cause me to consider reviewing that.
doitall said:Unless the cold to the boiler is restricted, then the hot and cold would be balanced, or am I missing something
clf-gas said:doitall said:Unless the cold to the boiler is restricted, then the hot and cold would be balanced, or am I missing something
would the cold supply be restricted through the boiler whilst in DHW mode but the cold supply to the mixer un-restricted
doitall said:clf-gas said:doitall said:Unless the cold to the boiler is restricted, then the hot and cold would be balanced, or am I missing something
would the cold supply be restricted through the boiler whilst in DHW mode but the cold supply to the mixer un-restricted
Maybe but the pressure would be equal
clf-gas said:doitall said:clf-gas said:doitall said:Unless the cold to the boiler is restricted, then the hot and cold would be balanced, or am I missing something
would the cold supply be restricted through the boiler whilst in DHW mode but the cold supply to the mixer un-restricted
Maybe but the pressure would be equal
Im not thinking outside the box here, what am I missing
Static pressures would be equal but dynamic pressures would be very different. The flow restriction through a combi results in very low dynamic pressures downstream.doitall said:If the pressures are equal how can it back up
doitall said:clf-gas said:doitall said:clf-gas said:doitall said:Unless the cold to the boiler is restricted, then the hot and cold would be balanced, or am I missing something
would the cold supply be restricted through the boiler whilst in DHW mode but the cold supply to the mixer un-restricted
Maybe but the pressure would be equal
Im not thinking outside the box here, what am I missing
Not a lot clf-gas
just me thinking, when I shouldn't.
If the pressures are equal how can it back up
chrishutt said:Static pressures would be equal but dynamic pressures would be very different. The flow restriction through a combi results in very low dynamic pressures downstream.doitall said:If the pressures are equal how can it back up
I don't think the shower would have to be in use because shower valves generally mix the hot and cold water before the on-off control valve. It is only the non-return valves that stop cold flowing across to hot pipes and vice versa.doitall said:But that would only work if another outlet was opened when using the shower.
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