LP522 is a 5/2 day, two channel programmer with backlit screen, 3 ON/OFFs per day, auto GMT/BST change, holiday mode, LED ‘ON’ light, boost and advance functions.
“I bought this to replace a Honeywell ST699 which I believe was installed just after the Romans left and was still working fine. I wanted to update my system so that the CH and DHW could be timed separately. The Drayton comes with a backplate, which is easier to wire, though the connections are different. The instructions are quite straightforward and I had no problems with the installation. If the new one sees Brexit out, I will be more than happy with it!”
