3 port valve

[southcoastboile]

I know that this probably sounds like a stupid question but,

If the cylinder is cold and you put the heating and hot water on the programmer at the same time will it prioratise the hot water and open only on hot water or will it immediately move to mid position ?

Thanks

 

[Roger Welton]

W plan will prioritise Hw, Y plan goes straight to mid position

 

[southcoastboile]

W plan will prioritise Hw, Y plan goes straight to mid position

Thanks mate