how should I wire my combi boiler with nest and economy 7?

[dominicj]

It's a worcester combi boiler with heating / hot water connected to the low rate economy 7. There is a nest thermostat controlling the temperature. The issue is that the heating is not very controllable.

Should I get the boiler moved from low-rate ecomomy 7 to the high rate so it will be switched on by the nest thermostat?

Thanks in advance
Dominic