Zone valve or not?

[Irish]

Evening all I've been asked to pice up a replacement boiler for a servowarm 50 so I'm thinking of a Wb 15ri my question is the cylinder is heated via immersion heater as are all the rest of the flats concrete floors means it'd be a nightmare to heat it via the boiler so as the boiler is only for the rads can I just use a programmable room stat without a zone valve or do I need the valve? Electrics aren't my strong point normally I get my mate to do the sparks side but he's on holiday at the moment, thanks

 

[buckley plumb]

Evening all I've been asked to pice up a replacement boiler for a servowarm 50 so I'm thinking of a Wb 15ri my question is the cylinder is heated via immersion heater as are all the rest of the flats concrete floors means it'd be a nightmare to heat it via the boiler so as the boiler is only for the rads can I just use a programmable room stat without a zone valve or do I need the valve? Electrics aren't my strong point normally I get my mate to do the sparks side but he's on holiday at the moment, thanks

if you can run htg pipes why not pipes to cylinder

 

[Irish]

Pipes are already in the floor for existing rads they don't want any surface mounted pipe work