Replacing a timeswitch

[kawasparky]

Hi all,
I was just wondering is it possible ( and if so how easy ) to replace a old switchmaster sm300 timeswitch with a new danfoss ts715,
Thx,
Mark.

 

[Dan Robinson]

It is fairly simple.

 

[kawasparky]

thx for the reply,
I tried to swop the connections as they were on the old switch, this powered up the new unit but it would not turn the boiler on, i guess i have to alter the wiring somehow.