Replace Danfoss 9000MA-Si / Fusion Comet boiler with Hive

[nitsuanomis]

Hello,

We are looking to replace the Danfoss 9000MA-Si controller for our Fusion Comet boiler with Hive.

Upon removing the controller from its backplate, we see the cables as per the attached image - essentially:

* N and L have a couple of permanently affixed cables each
* 1 and 2 are empty
* 3 and 4 are connected as expected

[Note: 5 and 6 are, we believe, an remote temperature sensor that will be disconnected.]

Can you please advise if we can simply proceed by keeping the wiring exactly the same in Hive, ie. leave 1 and 2 empty, connect 3 and 4 and leave two cables to each of N and L?

Everything is currently operating as we expect it to be and the terminal positions seem to be a one-to-one mapping for the same functionality, but we just wanted to check before proceeding.

Thank you in advance for any advice you can kindly provide!

Simon

 

[stem]

The wires going to the N & L terminals at the Danfoss will go to the N & L at the Hive.

For Danfoss Controls, terminal 3 is usually 'Hot Water On' and terminal 4 is usually 'Central Heating on' and as you suspect 5 & 6 are for a remote sensor. However, I have never seen a 9000MA-Si, (or a Fusion Comet electric boiler for that matter), so you will need to check with the 9000MA-Si instructions to check this is correct before proceeding.

If this is correct, then it corresponds exactly with the Hive (dual channel version). So, 3 = Hot Water On, and 4 = Heating On.