Why a seperate zone for UFH?
- Thread starter vetinry
- Start date
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M
mysteryman
The purpose of a pump overrun is to dissipate residual heat. An auto bypass merely sends residual heat back to the boiler.
D
DeltaT
Aye, another pearl of wisdom!!!
If the UFH is in a screeded floor, of course it can be connected to the existing CH system......................FFS it'll take 1 day to cool down anyway!!
Gentlemen; the Greemwash Ex-Double Glazing salesmen that are now selling UFH need to sell controls, it's the only way they can make a profit!!
I have never seen 2 x 3 ports on any system and dont think its possible, on heating systems with ufh, rads and dhw cylinder using a 3 port valve, there is normally a blocking 2 port valve installed just before the 3 port, the 2 port blocks what ever port is open when the ufh is running and opens with the 3 port when the rads or hot water cylinder calls for heat.
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D
DeltaT
Listen, if the technical knowledge of the people posting here doesn't improve, i'll be re-joining my chums over on Screwfux........Pfffttttt!!!
M
mysteryman
Of course you can fit three 2 port valves, it's called an S Plan plus or something.
The autobypass done not have to be between the flow and the return although on low water content boilers thats usually adequate.
It can also be fitted across the............
By the way a three port can also be fitted to operate as a two port as well as fitted to have the same effect as two two ports ( when there is already a three port in use ).
Tony
care to give a clearer explanation
D
DeltaT
OK *********** try this one for starters;
To use a Mid-Poss valve as a divertor valve;
Isolate the Orange(********** connect the White & Grey together. This will Divert from AB-B to AB-A.
************************!
You connect the second three port to the output of the first three port which can close off its output thus disabling both outputs of the second.
The second three port can simulate two two ports and open either one or both or neither ( when the first is closed ). Bit like 7400 logic!
The second three port can simulate two two ports and open either one or both or neither ( when the first is closed ). Bit like 7400 logic!
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