boiler heating options

[cheken]

i have a concorde wrs boiler, located at the bottom of the boiler is a timer unit that has the timer clock with two timing settings for the heating to come on in the morning and late evening, and two switches 1st is water only, off, water and heating, 2nd is once, twice, and constant. now when i switch to water and heating i get hot water and hot radiators,which great but when i switch to water only when we have had a hot day and don't require heating for example i still get hot water AND hot radiators. should this really be happening? or would be a new part needed? your feedback would be greatly appreciated.

cheers.

 

[namsag]

What other controls do you have is there any motorised valves . is there 2 or 4 pipes coming from the boiler excluding the gas pipe

 

[cheken]

the only pipes i can see is just a gas pipe the rest are concealed behind the cover i would have no idea how to remove the cover, the only motorised item is the timer