BDR91 Installation

[IJEENS]

Good morning,

i have recently purchased an evohome connected pack, to replace a Salus RT500RF in to a Worcester Bosch Greenstar 42cdi combi. the salus is wired up as per the attached photo, which doesnt tie up to the suggested wiring for the BDR91, combi boiler option in the installation guide, but much more similar to the wiring diagram for the standard boiler wiring.

i have found some advice re wiring the bdr91 online for other Worcester Bosch boilers, as follows;

Ns in to N
Ls in to L
Lr in to B
with a link from L in the BDR91 to A.

would that work? any advise would be appreciated.

all the best, and thanks in advance

[Richard]

Yes correct as per page 44 of the evohome Installation Guide.

[IJEENS]

many thanks for the reply.

i found some comments online about removing a link inside the boiler between L and Ls. do i need to do this too? if so, does my current salus wiring imply that this is already done?

cheers

[Richard]

Well L and Ls are both Live terminals, so not sure why they would be linked?