I would like to replace my old central heating Potterton (OEM'ed by Horstmann) electro-mechanical clock programmer with a digital 7 day programmer for more flexibility.
Does anybody have an electrical wiring diagram for a pumped Central Heating and Gravity Hot Water system (without cylinder stat and zone valve). In other words, a basic "c" plan with just a clock programmer, room thermostat, pump and boiler. The room thermostat has three wires.
Does anybody have an electrical wiring diagram for a pumped Central Heating and Gravity Hot Water system (without cylinder stat and zone valve). In other words, a basic "c" plan with just a clock programmer, room thermostat, pump and boiler. The room thermostat has three wires.
