Thermostatic Wiring Principles - epatest PDF fileThermostatic Wiring Principles If you are new to thermostats or wiring diagrams you may need to read the following section carefully several times. How to Wire a Thermostat [Wiring Installation Instructions How to Wire a Thermostat ensure you will get the best out of your heating system and your thermostats. How to Wire a Thermostat Thermostat Wiring Diagrams. Wiring Diagrams - Honeywell UK Heating Controls Contains all the essential Wiring Diagrams across our range of heating controls. Click the icon or the document title to download the pdf.