Calling heating engineers - two or three zones

Raggie

A question for the experienced masses.

We live in a a three story town house.

Each floor has a Honeywell room thermostat and all but one radiator has trv fitted.

Hot water is via stored cylinder

There is a honeywell two zone 7 day programmer.

One zone ground floor
One zone two upper floors

The thermostats on the two upper floors work on an "either" basis, so as long as one of them calls for heat both floors get it....

The heating cupboard has four zone valves, so one for hot water and one for each floor.

Having looked at the wiring, I can see that the two upper floors are wired
In parallel with two motorised valves.

If I was to split this wiring so that each floor operates only when the thermostat on that floor wants heat, would I cause problems?

I am more than capable to change the wiring, but curious as to any problems I may be causing.

Can someone share their thoughts please.

Rags

Raggie

Thanks Arf,

There is a Honeywell automatic bypass valve DU 145 fitted.

Never been sure that it's set to the right value though

rags