I have a Landis & Gyr central heating timer model Chronogyr Rev20
and have lost the operating instructions,could anyone tell me if there is a web site where I can download another one.
Thanks
Thanks for the answer,on my CH system the timer and thermostat are one unit which is situated right next to the boiler down in the cellar and consequently in an area of 18 degrees C.Am I right in thinking that this will affect the proper function of the instrument and cancel out the night time...