URGENT - 2 Port Valve - Replacing SOPAC with Honeywell

[Numptyhead]

CH problem tracked down to broken 2 port Actuator valve.
Had a SOPAC ZV 20-2-EB. This was wired into the same Junction box (Earth, Neutral, Live and Switched live) as the CH pump.

On the SOPAC Blue, Brown, and Green/Yellow were connected to the Jnc Box - 2 Black wires were just cut off.

Now I've had to buy a Honeywell V4043H (£81) and don't want to blow it up.

5 wires come from the Honeywell Actuator valve : BLUE, GREEN/YELLOW, GREY, ORANGE and BROWN
- according to the circuit dia. GREY goes to switched live, ORANGE goes to live from the boiler, and BROWN goes to 'C' from the cylinder stat?

I've wired 4 of the 5 wires
-BLUE --> NEUTRAL
-GREEN/YELLOW --> EARTH
-GREY --> SWITCHED LIVE
-ORANGE --> LIVE
and I have BROWN leftover - where's it go? - Have I got the others right?

Any help very gratefully received

 

[namsag]

USE the LNE in the valve as before and snip the grey and orange they are the equivalent of your two blacks in old valve