replace old Honeywell T40 stat with Wireless DT92E

[adriaan029]

Please can someone give me some advice

I want to change the old fixed stat with the Honey BDR91 Relay Box so I can have wireless
just not sure on connection

I am using a two way multi zone system

Old stat

Earth

Blue wire in 2 / yellow wire in 3 / Red wire in 1

New Relay Box

Do i put Blue wire in N

Yellow in B

Red in L

any help much appreciated

 

[Roger Welton]

Nope, will need the relay box in the wiring center as it requires permanat L and N plus 2 wires to switch through.

 

[adriaan029]

Not sure what you mean, reading from other people, it's pretty straight forward, using existing wires

four wires one is N one is L one is needed for the switchable which is yellow

 

[Roger Welton]

it is simple you just need 4 cores to the reciever box, permanat live and nuetral, switched live in from the programer and switched live out to the control valve.

 

[adriaan029]

Has I want to use the box where the stat was, does that mean I can use the earth cable has one of the thanks for your help

 

[Roger Welton]

No earth cable isn't suitable, you need to put the box by the wiring centre (in the airing cubard normally) and disconect existing room stat, then wire up from there, if you're not sure then best getting some on in.