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how to install siemens rdh1orf room thermostat?

I have Siemens RDH1ORF room thermostat to install to my vaillant turbomax VUWGB242/1E BOILER
R.BAKEERATHAN, February 2011
my boiler wont fire up ??

Alison, August 2012
L&N from boiler to L&N terminals in receiver.

Terminal 3 from boiler to terminal LX in receiver.

Terminal L1 from receiver to terminal 4 in boiler.

Carefree, February 2011
link Click here to see other fixes for Siemens RDH1ORF.