What size wire for boiler to Thermostat receiver?

[bigup]

Boiler is a Worcester 37CDI and the thermostat want to hook up will be a CMT927

I already have Live and Neutral cable fitted from a switch fuse box so just need a 2 core cable to wire up the remaining terminals in the receiver from the boiler

the thing is im a bit confused on which size cable to get lol

anyone point me in the right direction please?

will this work: http://www.maplin.co.uk/2-core-6a-mains-cable-3182y-83

i only need a metre or so of it

thanks!

 

[Dan Robinson]

0.75mm Heat resistant.

 

[bigup]

thanks