Potterton prt2 thermostat replacement

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14 Sep 2021
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United Kingdom
Hi, I’m looking to replace my potterton prt2 thermostat with with a digital Honeywell DT90E
If anyone can give me advice on the wiring (which goes where) and if there’s anything I need to be careful of I would be very grateful.
Hopefully I’ve added the pictures of old and new correctly.
E939C3D9-B221-4A68-B4EA-8D6E32BCC767.jpeg
55B6FBE3-9911-4DBA-8139-CA15438DDFFB.jpeg
 
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Brown from potterton to A on Honeywell
Black from potterton to B on Honeywell
Safely terminated the Neutral (5 on Potterton) in a choc block
 

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