I understand that the power comes from the consumer unit to the timer and that ill then take a lead from the timer to the boiler where ill copy the wiring already there. The wiring diagram for the timer seems to show that i need to connect the l and com terminals to the live supply.
A New Time Switch Programmer For My Setup Screwfix
Apt immersion timer wiring diagram. And this i believe are the diagrams for the hive. This is the wiring diagram below the apt imm24. Immersion heater controller flushsurface mounting an immersion heater time switch with onoff and clock operation. And earth from the immersion heater which runs about 3kw. I dont need to be able t heat water independently. Just basic timing and on off.
This cost effective compact timeswitch is ideal for use with immersion heaters or other high current domestic commercial or industrial applications. Apt imm24 immersion timeswitch eco the latest design of high current timeswitch incorporating a rotary onclockoff control offering permanent on or off or timed operation. And connect the heater to the no termincal and to the neutral supply. Connect the neutral supply to the n terminal. Cut an 8 inch length of white insulated wire as a pigtail then strip 12 inch of insulation from each end. The next step in wiring the time switch is to connect the neutral wires.
Insert one bare end of the pigtail into the neutral screw terminal on the switch and tighten the screw. Will 15mm2 te be ok for the job. I intend to use it as a central heating timer. The hot water time clock is is just an separate immersion heater wired to said apt timer if we want hot water but dont want to switch on the burner in summer for instance. The unit has electro mechanical operation and features a rotary dial with easy to set tappets that activate switching at pre set times.