Alpha boilers and nest thermostat

[Skillfour]

I have no thermostat on my alpha evoke 28 boiler I bought a nest a0063 but not sure which wires go from where on boiler to where on my thermostat which are as follows
Y1. Aircon (not got)
G fan (not got)
R power
W1 heat
C common
Ao* heat pump
My boiler has various various empty chambers

 

[Deleted member 120897]

Are you based in the USA or have an American Stat/instructions?

 

[ShaunCorbs]

Wrong instructions also shouldn’t be messing inside the boiler if your not qualified