Worchester Bosch DT10RF to Nest/Pre-heat

Joined
14 Apr 2010
Messages
99
Reaction score
0
Location
Lancashire
Country
United Kingdom
I am looking to replace my current thermostat (DT10RF) on my WB 440CDi Highflow combi boiler with Nest. I am looking to verify that I understand the wiring correctly.

The have attached a picture of the boiler connections and Nest.

Nest.jpg



I believe I need to wire the nest as follows:

ST10 Ls to Nest L
ST10 Ns to Nest N
ST10 Lr to Nest 3
Link Nest L to Nest 2

Can someone confirm that the wiring proposed is correct?

I also wanted to ask if there is a way to use pre-heat with the Nest or if this facility will be lost following installation of the nest.

Thanks in advance.
 
Sponsored Links
No your wiring is wrong.

ST10L to nest L
ST10N to nest N
ST10 LS to nest 2
ST10 LR to nest 3
no links

The nest in this instace will only control the radiators the HW pre heat is controlled by the ECO button on the boiler and wont be affected, you will however have to
disconnect the DT10RF from the boiler or this will over ride the nest when installed
 
No your wiring is wrong.

ST10L to nest L
ST10N to nest N
ST10 LS to nest 2
ST10 LR to nest 3
no links

The nest in this instace will only control the radiators the HW pre heat is controlled by the ECO button on the boiler and wont be affected, you will however have to
disconnect the DT10RF from the boiler or this will over ride the nest when installed
His wiring is still working.
 
Sponsored Links
Hertsboiler and ianmcd for your input. Ianmcd that was originally what I was going to do with the live and neutral until I realised there was a alternative on ST10 and was thinking it may be easy to have less wires in the ST10 terminals. You have however pointed out the downside if using the Ls and Ns terminals.

As for preheat, with eco mode controlling it is pretty much either permanent preheat or no preheat, which is fine.
 
The nest will not affect the pre heat it is just a switch that turns the heating on or off
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Back
Top