RT300 : Wiring Diagram (1.3.2.) . The ideal position to locate the RT300 thermostat is about 1.5m above floor level, in a location where the thermostat is accessible, reasonably lit and free from extremes of temperature and draughts. Do not mount the ...
RT300RF Question and Answers. How do I change the RF Address Codes on my RT300RF ? At the back of the thermostat there are five black jumpers numbered 1 to 5. For example, take 2 and 4 out of the thermostat, turn the power of at the boiler. Take the ...